TCVN 5307-2009

TCVN 5307:2009

TCVN

NATIONAL STANDARDS

TCVN 5307:2009 Third Edition

Petroleum and Petroleum Products Terminal – Design Requirements

Hanoi – 2009 1

TCVN 5307:2009

Introduction TCVN 5307:2009 is used to replaced TCVN 5307:2002 TCVN 5307:2009 5307:2009 was was deve develo lope ped d by Viet Vietna nam m Natio Nationa nall Petr Petrole oleum um Corp Corpor orat atio ion, n, prop propos osed ed by Vietnam

Minist istry

of

Industry

and

Trade,

appr apprai aise sed d by Dire Direct ctor orat ate e for for Stan Standa dard rds s and and Quality and publicized by the Ministry of Science and Technology.

2

TCVN 5307:2009

Petroleum and Petroleum Products Terminal – Design Requirements Requirements 1 Applying Scope 1.1 This This standa standard rd provid provides es fundam fundament ental al require requiremen ments ts for new design design and const construc ructio tion, n, for  upgrading and expanding petroleum and petroleum products terminal in liquid state. 1.2 This This standa standard rd can can be applie applied d to design design termina terminals ls for flamma flammable ble-liq -liquid uid which which are easil easily y explosive and burns in the same ways as petroleum and petroleum product. This however shall be approved by authorized agencies. 1.3 This is not applied to design - Liquefied gas terminal; - Petroleum and petroleum products terminal with solidification point equal to or higher than 37.80C; - Petroleum and petroleum products basin – one of the equipments of the technological line of other works; - Petroleum and petroleum products reservation r eservation terminal in underground caves and floating buoy on closed sea; - Petroleum and petroleum products tanks at petroleum station.

2 References These following references are necessary when applying this standard. To references specified with the year of issuance, the stated edition will be prioritized for applying. To references with unknow unknown n year year of issuan issuance ce,, the latest latest editio edition n will will be priori prioritiz tized ed for applyin applying, g, includ including ing edited edited contents. TCVN2622 TCVN4090 TCVN5334:2007

TCVN6608 (ASTMD3828) TCVN5303 TCVN TCVN72 7278 78 (ISO (ISO 720 7203) 3)

Fire prevention for houses and works – Design requirements Main pi pines of of pe p etroleum an and pe petroleum pr p roducts – Design requirements Electric equipments in petroleum and petroleum products products terminal terminal – Safety Safety requireme requirements nts in designing, designing, installing and using. Petroleum products – Method of identifying flash point with scale. Burning safety – Terms and definitions. Figh Fighti ting ng mat mater eria ials ls – foa foami ming ng agen agents ts

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TCVN 5307:2009

3 Terms, Definitions Terms and definitions used in this thi s standard are regulated in TCVN 5303, including: 3.1 Petroleum and Petroleum Terminal The comple complex x of houses houses,, works, works, system systems s of techno technolog logica icall pipes pipes and basin basins s used used to receiv receive, e, reserve, mix, then allocate petroleum and petroleum products, which is hereinafter called in short form DM&SPDM or terminal. 3.2 Flammable and Combustible Material Materials which are under the effect of fire or high temperature can easily combust, smolder or be carbonized, then continue smoldering or be carbonized after separated from the fire source. 3.3 Hard Flammable Material Materials which are under the effect of fire or high temperature can easily combust, smolder or be carbonized, then continue burning, smoldering or be carbonized if contacting with fire source, however, after separated from the fire source, stop burning or smoldering. 3.4 Non-flammable Materials Materials which are under the effect of fire or high temperature can not easily combust, smolder or  be carbonized. 3.5 Fire Resistance Limit The period measured from the point samples are tested the fire resistance ability in accordance with standards to the pointy of appearing one of the limited state of the structure and structural elements. 3.6 Fire Resistance Level The characteristic of fire resistance of houses and works is identified by the fire resistance limit of  main construction structures. 3.7 Flash Point The lowest temperature at which the mixture of air and DM&SPDM gas on the surface of liquid in standard condition will flash for the shortest period of time. (The testing method complies with TCVN 6608 (ASTM D 3828)). 3.8 Fire Fighting System The combination of technical equipments contributes a complete system specialized to extinguish fires. 3.9 Fighting Material Natural substances or compounds used to extinguish fire (including: foaming substance dissolved in the air, water, chemical powder, inert gas, ect.,). 4

TCVN 5307:2009

3.10 Fire Fighting Foam Fire fighting foam is made from liquid in mechanical or chemical method. 3.10.1 Low Expansion Foam Concentration Fire fighting foam with expansion multiples smaller than or as many as 20 times of the initial volume of the foam solution. 3.10.2 Medium Expansion Foam Concentrate Fire fighting foam with expansion multiples of from 20 to 200 tim es as many as the initial volume of  the foam solution. 3.10.3 High Expansion Foam Concentrate Fire fighting foam with expansion multiples of from 200 to 1000 times as many as the initial volume of the foam solution. 3.11 Fire Fighting Vehicle The vehicle carrying specialized specialized fire fighting equipments to fire-stricken fire-stricken places or in some other  other  emergencies. 3.12 Fixed Fire-fighting System The complex of specialized technical equipments, pipes and fighting materials used to extinguish fire are installed at fixed positions. 3.13 Semi fixed Fire-fighting System The complex of specialized technical equipments, pipes and fighting materials used to extinguish fire are partially installed at fixed positions ad partially connected when fighting fire. 3.14 Density of Ejecting Foam Solution The amount of foam solution ejected into a fire in a time unit per area unit (//s.m2). 3.15 Flying Funnel The space limiting obstacles over head and at the end of runway, ensuring safety for planes. 3.16 Floating Roof  There are various forms, manufactured with mental or composite materials or materials combined from these two above types, types, at the same time having a buoy afloat afloat on the surface of DM&SPDM for the sake of preventing evaporation. 3.17 Fixed Roof Tank Cylinder-shaped tank has roof fixed to the wall of the tank. 5

TCVN 5307:2009

3.19 Floating Roof Tank Cylinder-shaped tanks tanks has no roof fixed but but afloat on the surface surface of DM&SPDM inside. 3.20 Edge Stopped Foam Steel structure is fixed on the buoy to keep the foam inside the area between the buoy and wall of  the tank. 3.21 Pressure Vacuum Vent This equipment control redundant pressure and vacuum in the tanks in order to prevent loss due to evaporation during the operation process. 3.22 Emergency Ventilation Ventilation for tanks in case of fire so that the wall of tanks will not be broken. 3.23 Level Device  An equipment made of mental and fixed on the wall (or bottom) is used to measure the product inside the tank.

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TCVN 5307:2009

4. General Regulation 4.1 Items in DM&SPDM terminal shall be designed complying with current regulations. 4.2 Based on flash point, DM&SPDM can be divided into three types: - Type 1: types of DM&SPDM with flash point of smaller than 37.80C; - Type 2: types of DM&SPDM with flash point fluctuating between 37.80C and 600C; - Type 3: types of DM&SPDM with flash point higher than 600C; 4.3 DM&SPDM terminals are classified into two groups: - Group Group I: termina terminals ls servin serving g busine business, ss, nation national al reserv reservati ation, on, or DM&SPD DM&SPDM-pr M-proc ocess essing ing factories; - Group II: terminals serving factories (industrial, energy, transport, ect.,) NOTE: 1) Terminals in group II having the capacity as stipulated in 6.1 of this standard shall be designed as terminals in group I; 2) Terminal for national supply and preservation and having the capacity of smaller than 1000m3 to products type 1 and smaller than 5000m3 to products type 2, 3 can be designed in accordance with standards applied for group II. In case of containing both types of  products, 1m3 of products of type 1 shall be equivalent to 5m3 of products type 2, 3. 4.4 Tank, Tank, termina terminall and items items conta containin ining g DM&SPD DM&SPDM M can can be design designed ed afloat afloat or underg undergrou round nd provided that these regulations are complied: - Underground: if the Tank or the terminal foundation is underground and assuming that the tank or tank is broken, the maximum level of DM&SPDM inside will spread around and cover the surface at the level of 0.2 m lower l ower than the lowest plan surrounding. It is considered underground if: + The floating floating tank is emban embanked ked with soil soil on the roof of at-lea at-least-0 st-0.3m .3m thickne thickness ss and embanked with soil outside of the wall of at-least-3m thickness calculated vertically from the wall of tank to that of terminal. + The floating tank is embanked with brick, stone or concrete, the distance from the outer  edge of the wall to the tank wall is at least 0.3m, and the surface is covered with brick, stone or concrete of at least 0.3 m thickness. - Floating: When failing to satisfy regulations applied to underground tank and terminal. NOTE: 1) The thickness of soil embankment or boundary wall of underground tank is identified by calculating hydrostatic pressure of spilt liquid; 2) The space between the wall and tank shall be tightly filled with sand or soil. 4.5 Whether DM&SPDM is contained in fixed roof tanks, floating roof tanks and internal floating roof tanks is on the basis of the type of products stocked. 4.6 The material, structural elements of the house and works in DM&SPDM terminal (excluding tanks) shall have fire resistance limit corresponding to the level of these works as stipulated in TCVN 2622. NOTE: Force-resistance structure of such items as input-and-output port on road and waterway, railway, pump station or house of design flow can be made of steel. 7

TCVN 5307:2009

4.7 It is compulsory to take corrosion-resistance measures appropriate with technological pipes in DM&SPDM terminals. 4.8 Corrosion-resistance for tanks can apply one of the following measures: - Painting the entire surface of the bottom; - Increasing the thickness of the tanks bottom in case of corrosion; - Protecting the tank bottom from electrochemical corrosion. 4.9 On the basis of the risk level of explosion and fire as well as technological activities, items in DM&SPDM terminal are classified into 5 levels as specified in Table 1. Table 1 – Production Classification Production Property of Production Name of Items and equipments in Level Process Terminal Preserve, import and Tank Tanks, s, term termin inal als, s, basi basin n with with the the gas gas  A expo export rt,, proc proces ess s and and use use concen concentra tratio tion. n. InputInput-and and-ou -outpu tputt works, works, In danger  types types of DM&SPD DM&SPDM M with with tank-filling tank-filling house and other other containe containers, rs, 0 of  less-than-37.8 C flash sewa sewag ge-pum -pump p sta statio tion, DM&SPD &SPDM M0 explosion point loading yard with less-than-37.8 C flash point. Preserve, import and  As regulated with production items in A, B expo export rt,, proc proces ess s and and use use but applied to DM&SPDM with flash point In danger  types types of DM&SPD DM&SPDM M with with ranging from 37.80C to 600C of  flas flash h poin pointt rang rangin ing g from from 0 0 explosion 37.8 C to 60 C

C In danger  of fire

D

E

Preserve, import and expo export rt,, proc proces ess s and and use use types types of DM&SPD DM&SPDM M with with 0 more-than-60 C flash point

Tanks, pres reserva rvation terminals for  products products inside inside tanks, tanks, Input-andInput-and-outpu outputt works, production-pump station, sewagepump pump statio station, n, DM&SPD DM&SPDM-lo M-loadi ading ng yard yard 0 with with more more-t -tha hann-60 60 C flash point. Pres Preser erva vati tion on term termin inal al for for soli solidd-st stat ate e petroleum petroleum products products,, transforme transformerr station station with with over 60kg of gre grease, se, mate materi ria al terminal. Forg Forging ing and and weld welding ing work worksh shop op,, tank tank-repair repairing ing worksh workshops ops,, electr electricit icity-s y-supp upply ly stat statio ion, n, elec electr tric icity ity-ge -gene nera rati tion on stat statio ion, n, transformer station with less then 60kg of  grease for each machine.

Production related to inflammable substances or  material ials in heated or  melted state with the phenomenon of heat emission emission spark spark emission. emission. Usin Using g solid solid and and liqu liquid id to manufacture fuel. Production related to Mec Mechani hanica call work worksh sho op, substanc substances es and materials materials station, refrigerator. inflammable in cool state.

wate waterr-p pump ump

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TCVN 5307:2009

5. Petroleum Terminal and Petroleum Products Group 1 5.1 Total Plan 5.1.1 DM&SPDM terminals group I are classified in compliance with Table 2 based on their  capacity.

II III

Table 2 – Terminal Classification Terminal Level Total Capacity of Terminal. m3 I More than 10000 IIA From 50000 to 100000 IIB From 30000 to 50000 IIIA From 10000 to 30000 IIIB Less than 10000

NOTE: The total capacity of the terminal is the sum of identified capacity of tanks and other  conta containe iners. rs. When When identif identifyin ying g the capacit capacity y of terminals terminals,, the capacit capacity y of these following tanks are excluded: - Intermediate tanks; - Fuel tanks for heat-generator furnace; - Fuel tanks for Diesel electricity-generator for terminals. 5.1.2 The fire-prevention distance from production items and locations in danger of explosion and fire (Production Items in A, B and C in Table 1) 1) of DM&SPDM terminals to houses, houses, works items of  of  factories, companies and public works, resident area and other items outside the terminal shall in compliance with regulation in Table 3. Table 3 – Distance from items in danger of explosion and fire of DM&SPDM terminals to other items Objects in need of distance Minimum distance (m) identification Terminal le level I Terminal level II 1. Houses and ite items of nearby rby 100 40 factories 2. Forest 20 20 - Broad-leaf tree - Coniferous-leaf tree, reef  100 50 3. Termi Termina nall of wood wood,, coal coal,, cott cotton on cloth, dry hay, straw, open mines 4. Railway 100 80 - Railway station 80 60 - Goods loading Flat form and branch 50 40 road 5. Edge of the nearest highway - Road level I, II and III 50 30 - Road level IV and V 30 20 6. Distance from the nearest tank to houses and works of nearby resident area. 7. Fuel Fuel-p -pum ump p stat station ion at petr petrol oleu eum m and station

Not 2 times smaller than the diameter of  tanks but not smaller than 60m

30

30

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TCVN 5307:2009

8. Torc Torch h in refi refini ning ng plan plantt or othe other  r  works 9. Airport: - Within the flight funnel - Outside the flight funnel

100

100

2000 1000

1000 1000

10. El Electric po pole (o (outside te terminal) 1.5 titime as as hi high as as th the el electric po pole NOTE: 1) The distance in the table is measured vertically from the outside surface of  structural elements to wall of houses and works. To highway, it is measured from the edge. To input-and-output works on railway, it is measured from the road central line. If terminal is in forest, trees shall be cut down. 2) To items of production level C, reduce 15%, except for 9 and 10; 3) To items of production level D, E, identify based on the demand for construction, preservation and operation; 4) When applying point 9 in Table 3, the height if items in DM&SPDM terminals shall be complied with regulations of the aviation industry and clearance height of the airport. 5.1.3 If the heights of tanks of DM&SPDM terminals are higher than the altitude of resident area, factor factories ies,, compa companie nies s and and publi public c railwa railway, y, which which are locate located d within within 150m, 150m, it is neces necessar sary y to construct fire-prevention dike, sewer for products in terminals in case of accident so as to prevent DM&SPDM leaking to resident area, factories, companies and public railway. 5.1.4 Design of warehouse for oil and oil-originated products shall be in accordance with relevant regulations. The warehouse shall be arranged 100 m from the dyke for grade I, 50 m for grade II and grade III. If the warehouse is arranged outside the dyke or by rivers of no dyke, its location shall not suffer  from erosion and reservoir of oil and oil-originated products shall be more than 40m from the water  level for storage of grade I, II and III. 5.1.5 The safety distance from the floating reservoir oil and oil-originated products to the house and other works in the warehouse shall conform to regulations of Table 4 Table 4: Minimum distance from the floating reservoir to items in the warehouse Items in in st store ne needed to to de determine di distance

1. Import-export port 2. Import-export work by railway 3. Pumping station of oil and its products 4. Tank car oil building, waster water pumping station, drum oil building; drum storage of oil and its products, drum yard; storage of oil and its products in drum 5. House and building using ceiling fire: - tank of oil and its products type 1 - tank of oil and its products type 2, 3 6. Fire rescue water station, water location of tank or reservoirs

Distance fr from ta tank in in accordance with storage grade, (m) I II, III 75 50 30 20 20 15 30 15

50 30

40 20

40

40 10

TCVN 5307:2009

7. Waste processing work - Retention lake, evaporation pond - Filtering lake, floating tank, retention tank with volume over 400 m 3 - Filtering lake, floating tank, retention tank with volume from 100 m3 to 400 m3 - Filtering lake, floating tank, retention tank with volume less than 100 m 3 8 House and other works of storages, wall and fence 9 Uncovered power transmission lines

30 30

30 20

15 10

15 10

25

20

Equal to 1.5 time of highest electric post for store levels`

NOTE: 1) For underground tank: Reduce 25% for point 6; and 50% for point 1, 3, 4, 7 and 8; 2) The underground tank is connected to the underground pump station so that from it is about 1m away from the wall; 3) Lubricant and FO pump stations, lubricant or FO tank are arranged at 3m each. The lubricant pump station is equipped with anti-explosion electric motor to be directly located on the lubricant tank; 4) The distance from the surface tank to the house and the work and from the solid brick of the house and the work (without window) having fire resistance limits not less than 2h shall be reduced 10%; 5) For Storage level III, if surface tanks are 5000m3 then the distance from oil and its products tank to the house and works in the Storage equipped with automatic fire extinguish system shall be reduce by 25% (except ( except for point 5 and 6); 6) In special occasion with reasonable reasons and agreement with fire preventing agency could be reach, the distance in Table 4 may be reduce but not excess 15%.

5.1.6 Fire safety distance from house and works of DM&SPDM terminal (excepting for tank) to railway input and output works, truck input and output, waterway input and output. - With DM&SPDM Type 1 is not less than 15 m; - With DM&SPDM Type 2, 3 are not less than 10 m. 5.1.7 Fire safety distance from house and work in which during production uses fire ceiling to car output and input equipments, waterway input and output equipment, DM&SPDM pump house, valves of pump house, pump house and water-oiled refining works, DM&SPDM conserving area in tank, tank pouring and boxing area must be under following regulations: - With DM&SPDM Type 1 is not less than 40 m; - With DM&SPDM Type 2, 3 are not less than 30 m 5.1.8 Distance from house and works (excepting for tank and producing work with ceiling fire use) to silt pit), opened petroleum collection hole is not smaller than 20 m and enclosed type is not less than 10 m. Distance between two houses or two works in which are not regulated in above terms, 5.1.10 determined in Table 5. 5.1.9

Table 5 – Distance between two houses or two works Fire level of  Distance among houses and works house or work Fire level of nearby houses and works 11

TCVN 5307:2009

I and II III IV and V

I and II

III

IV and V

- Dot not regulate with houses and works with D and E production rank - 9 m with A, B and C production rank houses and works 9 12

9 12 15

12 15 18

NOTE: Houses and works with fire level I and II of A, B and C production level in table 5, the distance among houses and works reduce from 9 m to 6 m if exist one of two following conditions: a) Installed Installed automatic automatic fire alarm system; system;  b) Regular explosive substance in house is from 10 kg/m2 and down 5.1.10 Houses and works in DM&SPDM terminal should arrange under each functional area as in table 6. Table 6 – Item’s functional level in DM&SPDM terminal Area’s name 1. Railway output and input area 2. Waterway output and input area 3. DM&SPDM terminal area 4. Road output and input area, item for production 5. Houses and other  auxiliaries 6. Office’s area

Name of houses and works placed in area Railwa Railway y outpu outputt and input input work, work, bump bump statio station, n, air  compressor, petroleum collection tank, tank terminal, working rooms for workers and other works related to railway output and input Output Output and input port, port, bump bump statio station, n, lab, lab, workin working g rooms other works related to waterway output and input DM&SPDM terminal, Steam collection tank, product heat heatin ing g equi equipm pmen entt for for tank tank,, pump pump stat statio ion, n, air  air  compressor  Car’s tank petroleum filling houses, tank filling house and other tanks, tank terminal, tank yard, , filtering equipment, weighting station Mechanic Mechanic garage, tank repair and suction suction garage, garage, generator generator station, station, transforme transformerr station, station, heat supply supply station, material terminal, lab and other works Office house, garage, guard standing team, etc.,

5.1.11

Must have minimum 6 m motorway to connect DM&SPDM terminal to public road. If  floating road’s length is more than 1000 m, we can build motorway with 3.5 m width but each 250 m is arranged one bypass car with 6 m width and ensure minimum length for  longest tank car on bypass area. Stuck track must have turning point for fire truck.

5.1.12

DM&SPDM terminal must have fence or fire resistant material with minimum high is 2 m. Distance from work in terminal to wall, fence is regulated as following: Both sides of railway output and input (from nearest side to fence): is not less than 15 m; Houses and works do not related to conservation, DM&SPDM input or output must be far at least 5 m from fence (excepting for working office, houses and other auxiliaries).

-

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TCVN 5307:2009

5.1.13

Terminal level I and II must have at least two gates for truck and connected to public motorway or terminal’s entrance. DM&SPDM terminal level III is allowed to arrange one gate.

5.1.14

Fire truck road must arrange around tank and near works relating to input and output activities, DM&SPDM conserving. Road’s surface must be at least 3.5 m in width; road’s coverage must be fire resistant r esistant material. If tank is one line, when reaching of management offices on fire prevention and protection safety, we can arrange one-side motorway of tank area, the left sides must have space to move fire fighting vehicles to tank in case of emergency.

5.2

Petroleum Tank and Petroleum Products

5.2.1 DM&SPD DM&SPDM M termina terminall is made made by fire resist resistant ant materi material al and is suita suitable ble with with produc product’s t’s property in tank. 5.2.1.1 Tank’s bottom needs one fire resistant lining layer or inflammable material. 5.2.1.2 DM&SPDM tank can be joint be weld, rivet, bolt joint or mixing method. 5.2.1.3 DM&SPDM terminal must install the following equipments and basic auxiliaries: Breathing valve (with or without fire separating equipment), light hole. Pressure ventilation hole (when not installing breathing valve), manual level measuring hole, product sampling hole, bottom’s water exhausting pipe, measuring m easuring equipment support pipe, measuring plate; Stair, Stair, handrail handrail installed installed for tank must be arranged arranged convenie conveniently, ntly, safely safely for operation operation and setting standardized level of tank. NOTE: 1) With product product type 3 in roof roof fixed tank, tank, or product type type 1, 2 in inner buoy buoy may be not install install breathing valve; 2) When When instal installing ling autom automati atic c measu measurin ring g equip equipmen ments ts (level (level measur measuring ing,, densit density y measur measuring ing,, water water guide guide measur measuring ing,, temper temperatu ature re measur measuring ing,, overflo overflow w warnin warning) g) we need need arrang arranging ing suitable holes with above equipment; 3) Inst Instal allin ling g equip equipme ment nt of putt puttin ing g fire fire fight fightin ing g foam foam into into tank tank revi review ews s artic article le 5.9 5.9 of this this standard. 4) Light holes, holes, manual manual measurin measuring g holes must must have closed closed steam steam cap. cap. 5.2.2 Breathing valve for roof fixed tank is calculated suitably with working condition of tank. Breathing valves must install fire extinguisher and must regard fire extinguisher’s resistance and other other risks risks for tank. tank. Emerge Emergency ncy venti ventilat lation ion for roof roof fixed fixed tank tank by instal installin ling g safety safety emergency on roof to open automatically when tank’s pressure is over safety limit. 5.2.3 With tank’s inner buoy, if we do not install breathing valve, we must install ventilating holes. Ventila Ventilating ting holes may be arran arranged ged near near roof’s roof’s center center or at roof’s roof’s margin margin as follow following ing regulations: Ventilating hole near tank roof’s center with minimum surface area of 0.03m2; Vent Ventila ilatin ting g hole hole at at roof roof’s ’s mar margin gin,, each each cir circl cle e of of 10 m has has one one hol hole e and and in in all all cas cases es 2 ventilating holes are not less than 4. Total area of holes are not less than 0.06D m (Dtank’s diameter calculated by m unit). 5.2.4 With underground tank, pipe’s diameter and pipe’s length of jointing and installing breathe valve is determined for fit with output and input volume into tank’s designed pressure. Ventilating hole’s output or breathe valve of underground product’s tank type 1 must be 13

TCVN 5307:2009

taken out of tank groups in which is higher than input pipe and must be higher than around surface is at least 3.6 m, type 2, 3 is higher than input pipe’s end and around surface is 0.5 m. Output of ventilating pipe or breathe valve must be 3 m far from works in terminal and does not affect to around working environment. 5.2.5 If tank is installed meter transmitting automatically to center (level measuring, temperature measuring, density measuring, water guide measuring, overflow warning), it must ensure safety under regulations in article 5.11 of this standard. 5.2.6 Floating and underground tank near flooding area (caused by flood, underground water) must have anti-floating solution for tank. 5.2.7 Floating tank containing DM&SPDM must be arranged under group. Total volume of each tank’s group is regulated in Table 7. Table 7 – Total allowed nominal volume in each DM&SPDM tank

Tank’s type

Nominal volume regulated in group (m2)

DM&SPDM’s type

Total allowed nominal volume in group

Do not depend of  200 000 product’s type Floating roof tank Smaller than 50 Do not depend of  120 000 000 product’s type Do not depend of  50 000 200 000 product’s type Buoy inner tank Smaller than 50 Do not depend of  120 000 000 product’s type DM&SPDM with flashing 50 000 and Smaller  120 000 temperature is higher than 37.8 0C Roof fixed tank DM&SPDM with flashing 50 000 and Smaller  temperature is 80 000 equal to or less than 37.8 0C With underground tank containing DM&SPDM, general free surface of underground tank’s group is not more than 14 000 m2 and each underground tank’s free surface is not more than 7 000 m2. 50 000 and bigger 

With horizontal cylinder tank, each tank’s volume is less than 100 m 3, each group is placed underground without more than 2 500 m3. When placing floating of product type 1, each group is not more than 500 m3 and for product type 2, 3 each group is not more than 2 500 m3. 5.2.8 -

Allocation of tanks in one group is determined as following: No more than 4 rows with tank of nominal volume which is less than 1000 m3; No more than 3 rows with tank of nominal volume which is from 1000 m3 to 10 000 m3; No more than 2 rows with tank of nominal volume which is 10 000 m3 or higher.

5.2.9 Fire prevention distance between DM&SPDM tanks 14

TCVN 5307:2009

5.2.9.1 Floa Floati ting ng plac placed ed tank tanks s with with volu volume me is equa equall or less less than than 400 400 m3, we can can arra arrang nge e 3 undergroup in which each group’s volume is less than or equal to 4 000 m on same area, safety distance between tank’s wall is determined under construction, maintenance and operation conditions. Fire preventing distance between nearest tank’s wall of near grups with volume of 4 000 m3 is not less than 15 m. 5.2.9.2 Minimum distance between two walls: - Minimum distance between two walls fixed in a group of fixed roof tanks, pontoon tanks, floating roof tanks is 1/6 as long as total diameter of two adjacent tanks if their diameter is equal to or less than 45 m. Minimum distance between two walls fixed in a group of floating roof tanks is 1/4 as long as total diameter of two adjacent tanks if their diameter is more than 45 m. - Minimum distance between two walls fixed in a group of fixed roof tanks, pontoon tanks with diameter more than 45 m, containing type 1 and 2 products, is 1/3 as long as total diameter diameter of two adjacent adjacent tanks and 1/4 as long as total total diameter diameter of two adjacent adjacent tanks containing type 3 products. NOTE: 1) When two adjacen adjacentt tanks contain contain two types of products, products, the determina determination tion of safe distance distance depends on a product which has smaller flash point; 2) For horizont horizontal al cylindrica cylindricall tanks, tanks, the minimum minimum distanc distance e is 0,9 m. 5.2.9.3 Distance between underground tanks tanks in the same group is at least 1 m 5.2.9.4 Distance between the nearest walls of the two adjacent groups (except for tanks belonging to item 5.2.9.1) is: -  At least 30 m, for float tanks -  At least 15 m, for underground tanks 5.2.10 Each group of tanks with its design capacity mentioned in 5.2.7 must be protected from fire with a wall surrounding outside, which has structure calculated based on hydrostatic pressure of  effusive petroleum and petroleum-based products. - If the wall is made of soil, top part of the wall is required r equired at least 0,5 m in width; - If the wall is made of concrete, top part of the wall is required at least 0,25 m in width; - The height of the fire protection wall must be 0,2 m higher than flooding level of the liquid in the tanks - The height of the fire protection wall does not exceed 2 m above ground level inside and outside the wall. If the wall is required to be over 2 m higher than ground level, the convenience to approach the wall for fire extinction must be ensued and this height must be acceptable to fire protection authorities. 5.2.11 There has to be a sub-wall at least 0,8 m in height in each group of float tanks in order to subdivide those tanks into smaller groups under the following requirements: - Total capacity of a sub-group does not exceed 20 000 m3. - Any tank with capacity equal to or more than 20 000 m3 must be separated by a sub-wall 5.2.12 The distance from wall of a vertical cylindrical tank to the outside edge of the surrounding wall is not less than half of diameter of the tank near the wall and does not exceed 15 m. The distance from wall of float tank with capacity less than 100 m 3 to the edge of fire protection wall is at least 1,5 m. Note: In special case and with the approval from the authorized agency, the distance from the tank wall to the internal edge of the outside fire isolated dam is minimized by 40%, but in compliance with the regulations in Point 5.2.10. 15

TCVN 5307:2009

5.2.13. 5.2.13. There must be at lest 4 accesses to each group of float tank, the tank areas must be opposite. There will be no less than two accesses for each independent tank. In case with the auxiliary fire isolated dam, at least two passes across the dam must be located. The passes across the dam must be constructed by the non-flammable material. 5.2.14. 5.2.14. After the new tank is constructed or the tank is repaired, the weld bead in the tank wall and bottom as well as the tank tightness must be tested. The air pressure cannot be applied for the petroleum and petroleum product tank. 5.2.15. 5.2.15. In case of new tank construction construction and tank reparation, reparation, the hydraulic hydraulic load of the tank must be under trial before put into operation. The time for trial is regulated as follow: - For the under 5 000m3 tank: at least 24 hours. - For the above 5 000m3 tank: at least 72 hours. 5.3. The technological pipe in the terminal 5.3.1 The technological pipe in the terminal must be made of non-flammable material and in compliance with the characteristics of the transported products. The diameter and the thickness of  the technological pipe must be calculated in compliance with velocity, flow, pump pressure and the working environment. The thickness of the pipe lining must be in accordance with Appendix A. 5.3.2. After the completion of the technological system, the pressure trial must be carried out. The technological pipe section under trial must be isolated from other connected sections by the flange or stop valve, in accordance with the following regulations: - Durability trial with the regulated trial pressure; - Tightness trial after the reduction of trial pressure to the working pressure. The air pressure cannot be applied for the used technological pipe. 5.3.3. 5.3.3. The time for durability trial by hydraulic power must be not less than 6 hours. After that, to test the tightness, the trial pressure must be reduced to the working pressure and the trial pipe section must be tested. If during 6 hours, the trial pressure does not change and there is not leakage in the pipe, the pipe section can be considered to meet the hydraulic requirements of  durability and tightness. 5.3.4 The durability of the technological pipe is tested according to the following regulations: - For the technological pipe with the working pressure equal to or less than 5 bars, the trial pressure will be 1.5 times higher than the working pressure, but not less than 2 bars. - For the technological pipe with the working pressure more than 5 bars, the trial pressure will be 1.25 times higher than the working pressure, or equal to the working pressure added with 3 bars, depending on which value is greater. 5.3.5 Technological pipelines can be placed on ground, in technological trench or underground. When When placin placing g pipeli pipeline ne in techno technolog logica icall trench trench,, trench trench struct structure ure have have to be made made from from nonnonflammable flammable materials. materials. The bottom of trench trench must slope toward common lake where connected connected to petroleum-containing drainage system. 5.3.6 Horizontal distance from edge of technological pipeline in terminal has working pressure less than 25 bars to house and other constructions in terminal under the Regulation of Table 8 Table 8 – Distance from technological pipeline to items in terminal Minimum distance from the edge of  Items for distance measurement technological pipeline, m 16

TCVN 5307:2009

1. Foundation and other  constructions 2. Tank wall DM&SPDM

3. Barrier’s foundation, head light pillar, pillar of pipe truss, communication lines. 4. Center of railroad

Floating pipeline 3 (0,5)

Pipeline placed in trench or underground 3,0

3,0

4 (no less than distance from tank wall to drainage gutter  of tank foundation)

1,0

1,5

4,0

4 (no less than distance from gutter to prism) 1,5 1,5

5. Motor way 1,5 - Edge 1,0 - Embankment batter foot Foundation of electric pillar  1,0 1,5 - Less than 1KV and outside lighting 5,0 5,0 - From 1 KV to 35 KV 10 10 - More than 35 KV - Water supplying pipe and 1,0 1,5 drainage channel Heat pipeline (calculating to outside 1,0 1,0 of trench) Electric cable-containing pipeline, 10 10 communication cable. Note: 1) The distance in quotes is the distance to foundation where has solid wall of  house and constructions. 2) In items 1, 2, 4, di stance is not calculated for connection pipeline to cistern railcar import-export station, other import-export constructions and tank. 3) Distance as showed in item 8 does not include distance for heat pipeline of  crude petroleum, mazut pipeline under the technological requirements.

5.3.7 The distance from pipeline out of terminal area to pump DM&SPDM to waterway importexport harbor, railway import-export station, cistern car import-export station, heat supplying station of terminal and adjacent DM&SPDM terminals have working pressure less than 25 bar, fix in the ground 0,6 m at least as regulation. - National railway, national highway, railway bridge, highway bridge and other works not belonging to DM & SPDM terminal shall be put parallel with a pipe not less 15m. - Public plumbing and drainage shall be put parallel with the distance of not less 10m. - Overhead electric line, underground electric cable and electric station shall comply with current regulations on high- pressure network safety. NOTE NOTE:: If taki taking ng meas measur ures es to enha enhanc nce e the the safe safety ty appr approv oved ed by the the agen agency cy mana managin ging g fire fire prevention, the distance can be decreased 30%. 5.3.8. The vertical distance of technological pipes in terminal is stipulated as following: For surface floating technological pipelines: distance from ground to pipe bottom is not less than 0.3 m. If ground is concrete, asphalt road and iron floor, distance is not less 0.15 m. For technological pipelines passing barrage: 17

TCVN 5307:2009

- Distance from road surface to pipe bottom is not l ess than 2.2 m. - Distance from highway surface to pipe bottom is not less than 4.5 m. - Distance from railway top to pipe bottom is not less 6 m. NOTE: If technological pipes pass through road, it is necessary to construct supporting structure; the above referred distance is from road surface and rail top to the lowest point of supporting structure. System of supporting structure shall be made of non-flammable materials. 5.3.9 It is not allowed to lay technological pipeline passing floor or house and the site which not related to DM&SPDM importing and exporting. Technological pipes used for DM&SPDM with under 37.80 flash temperature shall not be laid in same chase with steam line. Technological pipes passing highway and railway underground shall be laid in telescopic pipe whose diameter shall be 100mm more than technological pipe outside parameter (including cover  layer). 5.3.10. DM&SPDM Intake terminal by the main pipeline shall have pressure reducing valve to ensure safety of equipment, reservoir and technological pipeline in the terminal. 5.3.11 Heating and floating – laid technological pipe shall be installed with heating compensator. Pipeline heat insulation coating shall be made of hard-to-burn materials. 5.3.12 Underground technological shall be laid at least 200 mm depth from ground to box highest point. 5.4 Terminal and Petroleum Storage Yard and Petroleum Products in Tank. 5.4.1 Preservative storage of DM& SPDM contained in drum shall have fire resisting levels as following: - Flash temperature of product storage shall be less than or equal to 120 0C or more than 300 m2 terminal area shall have fire resisting levels at least II level. - Flash temperature of product storage exceeding 1200 C or terminal area being less 300 m2 shall have fire resisting levels at least III level. 5.4.2 Preservative storage of DM& SPDM contained in drum shall be managed with drum pouring house or petroleum pumping station. However, it shall be insulated by anti- fire wall with at least 1 h fire-resistance time and terminal shall have direct emergency exit. 5.4.3 Preservative storage of DM& SPDM contained in drum shall be divided into many cells and each cell shall be insulated by anti- fire wall. Each cell capacity is stipulated as following: - I Type DM&SPDM cell capacity shall not exceed 100 m3. - II and III DM&SPDM cell capacity shall not exceed 500 m3. Each terminal capacity is stipulated as following: - Type I DM&SPDM terminal capacity shall not exceed 600 m3. - Type II and III DM&SPDM terminal capacity shall not exceed 3000 m3.

18

TCVN 5307:2009

5.4.4 It is allowed to preserve type I petroleum contained drums with type II and III petroleum contained drums. However, total capacity of both types preserved shall not exceed 100 m 3 in a cell and 600 m3 in a terminal. 5.4.5 Doors of preservative storage of DM& SPDM contained in drum shall have safety dimension for means of loading l oading transportation and in accordance with following regulations: - Min door width is 2,1m; - Min door height is 2,4 m; - Door materials shall have at least fire- resisting rating. - Door threshold height is 0,05m. 5.4.6 Preservative storage floor of DM& SPDM contained in drum shall be made of anti- fire materials and have necessary gradient and have chase to set flow toward collecting pit and combine with external drainage system through close pit. Terminal step board is at least 0,8 m in length and shall be made m ade of non-flammable materials. 5.4.7

Preservative storage of DM& SPDM contained in drum is stipulated as following: - By-hand layout: no more than 3 drum stories. - Bracket layout: a layer is only set on each bracket. Bracket width is not twice more than each drum length; - Machine layout: Type I DM&SPDM is overlaid but not more than 3 drum stories.

Type II and III DM&SPDM are overlaid not more than 5 drum stories. Drum shall be piled up each array. Each array has no more than 2 drums. Aisle way to roll drum is not less 1.8 m. Aisle way between 2 bracket arrays shall ensure bracket loading equipment operation and not be less 1 m. 5.4.8 Floor or base to load drum containing DM & SPDM used for wagons and cars shall be made of anti- fire materials and anti- fire generation. 5.4.9 Links for type II and III DM & SPDM preservation shall comply with following regulations: - Each link is not more than 25 m in length and 15 m in width. -  Aisle way width for machine loading means means depends on using means means but not less 1.4 m. -  Aisle way width for people is not less 5 m. Distance to neighboring areas is not less than 10 m.

5.5 Pump Station, Lab of DM &SPDM Terminal. 5.5.1 Pump Pumps s for for pump pumpin ing g DM &SPD &SPDM M can can be set set in stat station ion unde underr shed shed or with withou outt shed shed.. Lubricating and black petroleum pumps are set at least 3 m far away from lubricating reservoir and heating fuel. 5.5.2 It is allowed to layout cathode station in pumping station. Automatic control equipment installing room shall be adequate with wi th 2622 Viet Nam standard. 5.5.3 Isolating valve system to prevent emergency on technological pipeline combined between DM & SPDM reservoir and pumping station or from pumping station to railway and xitec car import and export stations shall ensure min distance to pumping station is 3 m. NOTE: 1. Distance is stipulated from nearest valve center to pumping station boundary fence. 19

TCVN 5307:2009

2. If there is no boundary fence, distance is stipulated from valve center to roof supporting post.

5.5.4 When technological valve area set in pumping station with boundary fence, the number of  main pumps( excluding dredge pump, vacuum pump and backup pump) shall m eet the demand: a. At level I and II terminal: there are not more than 6 pumps for DM & SPDM with less 1200 C flash temperature (excluding black petroleum); or there are not more than 10 pumps for  DM & SPDM SPDM with with equa equall to or more more than than 120 1200 C flash flash temper temperatu ature re (inclu (includin ding g black black petroleum). b. At level level III termina terminal: l: there there are not 10 pumps for for DM & SPDM SPDM with less 120 1200 C flash temperature (excluding black oil (FO)) and the number of pumps is not stipulated for DM & SPDM with equal to or more than 1200 C flash temperature. NOTE: When being asked, technological valve area in pump station can be made roof made of  anti- fire materials m aterials and without boundary fence. In this thi s case, technological valve area is considered as put outside pump station. 5.5.5 In the case that pump is laid in station, pumping station shall have at least level II anti- fire rating rating.. Valve Valve manifo manifold ld base base shall shall have have water water exit exit gradie gradient nt combi combined ned with with water water exit exit system system through capping hole. 5.5.6 Distance between 2 adjacent pumps in pump station shall be conveniently arranged for  installation, maintenance, operation and emergency exit. 5.5.7 Dividing walls between pump putting cell and other cells having pipeline passing shall be built up to ensure that DM & SPDM is indiffusible from pump apparatus booth to other booths. 5.5.8 Electric equipment in station shall use explosion proof type. If pumping station is used to pumping many types of petroleum products, it is recommended to use DM & SPDM type of lowest flash temperature to be basic of explosion proof equipment choice. If electric engine without explosion proof is used, It should be insulated electric engine putting cell and pump putting cell by insulating wall with at least 0,75 hour fire- resisting time. Clearance at the moving backbone position combining engine with pump passing through wall shall be made of  anti- fire materials. 5.5.9 DM & SPDM chemical experiment house shall have at least level III heating -resistance rating. It is allowed to build up chemical experiment room with other rooms by anti- fire wall with at least 1 hour fire- resistance time. There must be outside or corridor directly door in the same house. Doors and windows of chemical experiment room shall be opened outside. It is not allowed to arrange chemical experiment room in items of A and B. 5.5.10 Chemic Chemical al exper experimen imentt house house is arran arranged ged with with other other rooms rooms to put air compre compresso ssor, r, air  generatio generation n equipment, equipment, model terminal terminal and other mechanica mechanicall used for experiment experiments. s. However, However, these rooms shall be insulated by anti- fire wall with at least 1 hour fire- resistance time and have opening door outside. 5.6 Import and Export Work by Railway. Railway. 5.6.1. 5.6.1. Designing and building up railway system in DM & SPDM terminal shall be adequate with current regulations. 20

TCVN 5307:2009

5.6.2 Import and export work by railway shall be arranged in flat and right area. Remark: For level III terminal, if import and export array is only carried in one side, It is allowed to arrange at bend and its radius not less 200 m. 5.6.3. Import and export work by railway can be implemented in one side or two sides. Mechanism of import and export array shall be used anti- fire materials. Distance of steps of a staircase is not more than 100 m and there must be staircases at top and bottom point. 5.6.4 Distance from railway center in terminal allowing head of machine to pass to nearest railway center where there is import and export work is not more than 20 m for DM& SPDM with less and equal to 1200 C flash temperature and not less 10 m for DM& SPDM with more than 120 0 C flash temperature. Distance between 2 near railway centers of 2 import and export works put parallel is not l ess 20 m. 5.6.5. Distance from railway center to jetty of import and export work is stipulated equivalently to next wagon dimension. 5.6.6 Stub length of railway where there is import and export work shall increase 20 m from vagong xitec ledge to blocking pier. 5.7 DM & SPDM Import and Export Dock and Work by Rail way. 5.7.1 Designing DM & SPDM import and export dock shall comply with current professional standa standards rds.. Import Import and export export dock dock and work shall shall use anti anti –fire –fire material materials. s. Floor surface surface dimension and approach bridge shall ensure to install import and export equipments, pipelines, roads and implement space. It should be arranged to install bubble solution access pipeline and anti- fire equipment on block at an adequate position. 5.7.2 Safety distance for dock is stipulated as following:  A, Safety distance from DM& SPDM import and export dock in ocean, lake to loading l oading dock of dry products, passenger train dock, naval harbor, tourism zone and other docks is stipulated: - Type I DM& SPDM import and export dock (including air fuel) is 100 m in length. b) Safe distance from DM&SPDM import and export port near the riverside placed in downstream area to the objects in the riverside shall be stipulated as follows: - Fixed military port and goods port: 200 m - Hydropower plant project, domestic water taking construction works and other quays: 300 m; -Other construction works: 50m c) Safe distance from DM&SPDM import and export port near the riverside placed in upstream area to the objects shall be stipulated as follows: - Fixed military port: 1000 m; - Hydropower plant project, domestic water taking construction works and other quays: 500 m; -Other construction works: 200m 21

TCVN 5307:2009

NOTE: - DM&SPDM import and export port for mine of second and third type in point a), b) and c) shall be decreased 35%; - DM&SPDM import and export port for transportation vehicles with the capacity of under 300 tons, required distance in point b) and c) shall be decreased 50%; - Above mentioned distances shall be counted from the outer edge of DM&SPDM import and export port to the opposite outer edge of above objects;

5.8 Place of pouring into i nto tanker and packing barrel 5.8.1 Place of pouring into tanker and packing barrel shall be arranged in suitable place to ensure that head of vehicles can turn to the emergency exit in the fastest way when fire happens. Place for pouring and packing shall have shelter or not. The shelter must have the fire resistant step at least the level two. It is allowed to arrange DM&SPDM pouring and packing equipments of type 1 with type 2 and type 3 at the same place of pouring and packing.

5.8.2 Safe distance from the pouring and packing construction works into tanker to constructions houses (excluding the reservoir) in the DM&SPDM terminal shall comply with the Article 5.1.6 and  Article 5.1.7 of this standard.

5.8.3 DM&SPDM pouring and packing equipments into barrel and other small containers shall be arranged in the yard with shelter or inside the house and it must have the fire resistant step at least the level 2. In the third leveled terminal, pouring and packing the products with the fire flammable temperature of equal or more than 120

0

C, shelter or house must have the fire

resistant step of at least level 3.

5.8.4  As for tank for implementing the pouring and packing work into the barrel or with smaller  containers with the capacity of each tank of equal or more than 25 m3 and the total capacity is not more than 200 m3 placed in the solid wall of pouring and packing place. It is required that we need to place at the position 2 m far from the outer edge of the wall and the distance of tanks is not less than 1 m.  As for these tanks for implementing the products with the fire catching temperature of more than 120 0 C and capacity of less than 25 m3, it is allowed to arrange in the house of petroleum pouring into barrel and/or other smaller containers.

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5.9 Water supply and drainage, fire protection and prevention 5.9.1 Water supply and drainage system, fire protection an prevention system for DM&SPDM terminal are not only in accordance with urban water supply and drainage standard, fire protection and and prev preven entio tion n stan standa dard rds s for for hous houses es and and cons constr truc uctio tion n work works s and and curr curren entt regu regula latio tions ns of  environmental protection.

5.9.2 These These regulation regulations s on spraying intensity intensity of foamer, foamer, spraying spraying time and number of spraying spraying nozzle for tanks of this standard shall be applied for design of fire fighting system by foaming spraying method on the surface of DM&SPDM and we only use foamier with low and medium degree of expansion. In case of using other fire fighting method or using foamier with high degree of expa expans nsio ion, n, it is requ require ired d to prov prove e that that this this appl applie ied d meth method od is safe safe and and appr approv oved ed by fire fire protection and prevention management m anagement agencies.

5.9.3 DM&SPDM shall equip the fire fighting truck and one mobile pump with these following requirements: - Terminal level I shall have at least two fire fighting trucks -Terminal level IIA shall have at least one fire fighting truck and one mobile pump with the similar function as pump of fire fighting truck. - Terminal level IIB and III shall have at least one fire fighting pump and one stand-by pump with the similar function as main pump. Fire fighting truck and pump shall ensure the required flow and pressure with the function of fire fighting by water and foam.

5.9.4 DM&SPDM shall be equipped with initial fire fighting equipments with the number and type applied according to Appendix C.

5.9.5 Terminal shall be equipped fire fighting system as follows: 5.9.5.1 Fixed fire fighting system shall be equipped in following cases: - Floated tanks with the diameter of equal or more than 18 m; -Floated tanks with capacity of equal or more than 2 000 m3 - Floated tanks with the height of equal or more than 15 m; NOTE: In case that it is allowed to arrange three lines of tanks, tanks areas shall comply with the  Article 5.2.8 of this standard. 5.9.5.2 Semi-fixed fire fighting system shall be equipped in following cases: - Floated tanks with the diameter of less than 18 m; 23

TCVN 5307:2009

-Floated tanks with capacity of from 400 m3 to 2 000 m3 - Floated tanks with the height of from 5 to less than 15 m; - Underground tanks with capacity of equal or more than 1000 m3 NOTE: As for black oil terminal, it is necessary to arrange from one to two lines (not depend on capacity and dimension of tanks) and we can arrange semi-fixed fire fighting system when being approved by the fire protection and prevention management agencies.

5.9.6  As for the terminal equipped with semi-fixed fire fighting system, it is necessary to fixedly install equipments of fire fighting system as minimum requirement: - As for floated tank: foamier nozzle, foamier solution pipe, cooling pipe on the tank wall installed fixedly on the tank wall and expanded minimally to the position of waiting throat placed outside the fire blocking shaded dike; - As for for unde underg rgro roun und d tank tank:: pump pump,, tank tank valv valves es bloc block k with with foam foamie ierr solu solutio tion n (foa (foamie mier  r  containing equipments), foam mixing equipment, foamier solution pipe, conducting pipe to the waiting throat.

5.9.7 As 5.9.7 As for waterway import and export port, in case of not having separate fire fighting system, it is necessary to have foam pipe from the general foam pipe system of the terminal to the port and we need to arrange the prier for taking foam solution in the suitable position for fire fighting work. Initial fire fighting equipments on the port shall be defined according to Appendix C.

5.9.8 As 5.9.8 As for tank with the capacity of less than 400 m3, it is not necessary to fight fire by fixed and semi-fixed fire fighting system, we can use pumps equipped at the terminal.

5.9.9 In the terminal, there are many kinds of tanks with the different shelter and dimension. Moreover, they contain products with different fire catching temperature, amount of foamier and water used for fire fighting process for tank areas shall be defined for the case that the tank catches fire with the largest demand (calculation method shall be applied according to Appendix B of this Standard)

5.9.10 As 5.9.10  As for the fixed shelter tank (without inner shelter), minimum time of spraying, intensity of  spraying and number of spraying nozzle to create the surface of foamier for fire fighting process of  tanks shall be stipulated as follows: 5.9.10.1 In case that foamier nozzle fixedly installed on the tank using foamier with average expansion multiple, it shall be implemented according to regulation in the Table 9. 24

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Table 9 – Spraying Intensity of foamier with Average Expansion Multiple Spraying Intensity of  Type of DM&SPDM

foamier 

Spraying time

 //s.m2

Min

0.08

10

0.05

10

 As for DM&SPDM with the fire catching temperature of less than or equal to 37.80C  As for DM&SPDM with the fire catching 0

temperature of more than 37.8 C

5.9.10.2 In case that foamier nozzle fixedly installed on the tank using foamier with low expansion multiple, it shall be implemented according to Table 10 Table 10 – Spraying Intensity of foamier with Low Expansion Multiple

Spraying Intensity of  Type of DM&SPDM

foamier 

Spraying time

 //s.m2

min

0.068

55

0.068

30

 As for DM&SPDM with the fire catching temperature of less than or equal to 37.80C  As for DM&SPDM with the fire catching temperature of more than 37.80C to

93.30C Crude petroleum 0.068 55 Note: Applied foamier nozzle in this Article is the kind of nozzle that installed at the tank wall with the thrust trip to guide the foam or installed in the floated shelter  5.9.10.3 Number of foam nozzles fixedly installed on the fixed shelter shall be stipulated in Table 11 Table 11 - Number of foam nozzles fixedly installed on the fixed shelter  Minimum number of spraying Tank Diameter, m

nozzle

Up to 24 More than 24 to 36

(Unit) 1 2 25

TCVN 5307:2009

More More More More

than 36 to 42 than 42 to 48 than 48 to 54 than 54 to 60

3 4 5 6

5.9.11  As for the floated shelter tank, when the shelter is manufactured according to metal dual plate plate shape shape or single single plate shape shape attach attached ed on the metal buoy, buoy, minimu minimum m spray spraying ing time and intensity, distance of arranging the spraying nozzle and the space side area for foam spraying for  fire fighting shall be stipulated as follows:  As for low degree of expansion foam: foam: - Spraying intensity of foamier solution: 0.2 //s.m2; - Minimum time of foam spraying: 20 minutes; -Distance between spraying nozzles shall be arranged according to tank circumference depending on the height of foam blocking edge; -Space side area for spraying foam shall be taken as equal to ear-ring areas between tank wall and foam blocking edge;  As for average degree of expansion expansion foam: - Spraying intensity of foamier solution: 0.25 //s.m2; - Minimum time of foam spraying: 10 minutes; -Distance between spraying nozzles shall be arranged according to tank circumference depending on the height of foam blocking edge; -Space side area for spraying foam shall be taken as equal to ear-ring areas between tank wall and foam blocking edge; NOTE: 1) We can see method to put foam into the floated shelter tank and internal floated shelter tank in  Appendix D; 2) As for type of dual and single plates floated shelter and foam blocking edge, please see  Appendix E. Other floated shelters other than two kind of floated shelter do not belong to this  Article.

5.9.12 As 5.9.12 As for internal buoy tank 5.9.12.1 In case that internal buoy shelter is metal dual plate or single plate attached on the metal buoy or metal floated shelter with the metal buoy to ensure that the liquid cannot run into the inside, time, intensity and distance of arranging the foam spraying nozzle and the space side area for foam spraying shall be defined according to Article 5.9.11 of this Standard.

26

TCVN 5307:2009

5.9.12.2 In case that internal floated shelter does not belong to types stated in Article 5.9.12.1, time, intensity, space side areas and number of spraying nozzles shall be defined as he fixed shelter tank according to Article 5.9.10 of this standard. In case of applying according to Article 5.9. 5.9.11 11 of this this stan standa dard rd,, it is requ require ired d the the disc discus ussi sion on from from fire fire prot protec ecti tion on and and prev preven entio tion n management agencies.

5.9.13 Within the group of tanks with the total capacity of less than 4 000 m3 and the largest tank within the group is less than 4 00 m3 arranged according to Article 5.2.9.1, all tanks in the groups shall be considered as one tank, conventional area of space side of the tank for defining the amount of foamier solution in any case is not more than 300 m2.

5.9.14 In addition to foam spraying equipments fixedly installed in the tank, it is necessary to arrange supply prier of foam solution in the outside of fire blocking shaped dike to extinguish the fire in the dike area because the product is overflowed from the tank. Flow of foamier solution for  each prier is 189 //min. Requirement on number of foamier solution prier and minimum operation time of these foam supplying priers shall be defined according to Table 12 and Table 13. Amount of foamier for fire fighting in the tank area shall be the total amount of foamier solution for fire fighting defined in this Article and defined amount according to Article 5.9.9 of this Standard. Table 12 - Number of pillar taking the auxiliary foam solution The largest diameter tank, m Less than 19,5 From 19,5 to 36 Greater than 36

Number of auxiliary pillar  1 2 3

Table 13 - The minimum operation time of pillars taking the auxiliary foam solution The largest diameter tank, m The minimum operation time, min Less than 10,5 10 From 10,5 to 28,5 20 Greater than 28,5 30 5.9.15 Reserve factor of foam solution (K) for fire fighting in tanks DM & SPDM regulated as follow: - To medium expansion foam concentrate K = 3 - To low expansion foam concentrate K = 2 Note – Amount of reserve foam solution designing for the largest fires. 5.9.16 Intensity and duration of watering burned tank perimeter and half of perimeter of adjacent tanks is equally to or less than twice of prescribed burned tank 5.9.16.1 Watering intensity for floating tank - To burned tanks: 0,5 //s per 1 meter of tank perimeter  - To adjacent tanks: 0,2 //s per 1 meter of tank perimeter  27

TCVN 5307:2009

5.9.16.2  Amount of cooling water for underground tanks (including burned and adjacent tanks) includ includes: es: amount amount of cooli cooling ng water water for reduci reducing ng ambien ambientt tempe temperat rature ure,, cooling cooling the surfac surface e of  adjacent underground tank as well as firefighter, calculated as follow: - 10 //s for tank with capacity from 100 m3 to 1000 m3 - 20 //s for tank with capacity from 1001 m3 to 5000 m3 - 30 //s for tank with capacity from 5001 m3 to 30000 m3 - 50 //s for tank with capacity from 30001 m3 to 50000 m3 5.9.16.3 Time for defining water amount for cooling burned and adjacent tanks is at least 3 hours and designed for the largest fires. 5.9.17 Water amount for firefighting, cooling and foam solution must always be as requirement.  Adding water amount in case it was used or lost, time for adding reserve water amount is within 48 hours. In place where water is rare, allows prolonging of time for adding reserve water but no more than 96 hours. Time for adding reserve foam solution is within 48 hours. 5.9.18 When the tank wall have enhanced ring arranged outside, must create the trough for  cooling water flow direction covering the whole area of the tank wall 5.9.19 Cooling Cooling water water conduit conduit and firefighting firefighting foam solution conduit must be separately separately designed designed with loop network tank area and stub into product storage containing in cask, production pump statio station, n, roads roads import import-ex -expor portt area, area, railwa railway y import import-ex -expor portt and and dock. dock. Operat Operation ion valve valve arrang arranged ed outside for firefighting purpose must be safe and convenient for operating in case fire happens in tank area. Cooling water conduit running around, fixing at the top of tank wall and operating valves must be meet the requirement as stated in Article 5.9.16 for any case when fire happens. Water intake pillars, foam solution intake pillars are not located less than 2,5m from road edges and arranged in a convenient position for the firefighting coordination of movable vehicles. 5.9.20 Preparing a spare foam pump with the same functions as the main foam pump if fix foam fighting system using metering device by independent injector with water pump. 5.9.21 Water supplying resources for firefighting operation are from rivers, lakes, ponds and from public water resources must meet the requirement as stated in Article 5.9.17 of this Standard. When the firefighting operates with fixed or movable system, there are at least 2 convenient locations for taking water of firefighting vehicles. The distance from water intake location to nearest tank regulated ad follow: - The distance must be greater than 40 m and less than 200 m if using firefighting van. - The distance must be greater than 40 m and less than 150 m if using movable firefighting pump. 5.9.22. Requirement pressure of foam ejecting and watering system for pillar tank. - To foam ejecting system, pressure is defined in reference to requirement of installed device. - To watering system for fix installed tanks, requirement pressure of ejector at farthest point must greater than 0,6 kg/cm2 Note: hydraulic test of foam solution conduit system and watering conduit system is 1,25 times in comparing to working pressure. 5.9.23 In DM & SPDM storage must have separate drain systems for clean water and petroleumcontaining water. Including: 28

TCVN 5307:2009

- Drain system for clean water: household water, rain-water from areas that do not relate to stor storag age, e, impo import rt-e -exp xpor ort, t, pump pumpin ing g DM & SPDM SPDM and and not not in dang danger er of DM & SPDM SPDM contam contamina inatio tion. n. Clean Clean water water drain drain system system is allowe allowed d to eject eject waste waste water water into into outsid outside e environment. - Petro Petroleu leum-co m-conta ntaini ining ng drain drain system system:: import import-ex -expor portt floor floor washin washings gs,, waste waste water water from from chemical laboratory, waste water from bottom tank and tank washing, rain-water from areas with high risk of petroleum contamination. Waste water flows into petroleum sedimentation tank before flowing into sewage disposal system. 5.9.24 Petroleum-containing drain system in DM & SPDM storage at level 1 and 2 must be constructed tightly, but the storage with level 3 can be opened. 5.9.25 DM & SPDM containing drain system must have plug holes with fire compartment water  layer with at least 0.25 m high and located as the following: - At the connection point with branch of drain conduit of tank area. - At the connection point with branch of drain conduit from import-export area. - At the connection point with branch of drain conduit from valve area, pumping station, chemical laboratory… - Front and rear position of sedimentation tank in sewage treatment area with distance of  10m or more. - At connection point with drain branch of railway import-export construction. - Plug holes are arranged along with the main drain pipes, distance between 2 holes is less than 400 m. 5.9.26 Drain pipeline from tank to outside must arrange valve: - If installing flap valve, valve is located at sink inside the dyke, valve control device must be located outside or on the fire isolated surface of dyke. - If installing stop valve, valve should be placed outside of fire isolated dyke. 5.9.27 It must have drainage channel along the railway import-export construction, every 50m along along the import import-ex -expor portt constr construct uction ion must must have have a conne connecti ction on branch branch with with commo common n draina drainage ge system and arrange plug hole as stated in Article 5.9.25 5.9.28 The floor of hold terminal DM & SPDM contains in drum and small container must have drainage gradient to drainage channel in house and flows into petroleum-containing drainage system of terminal. 5.9.29 It is allo allowe wed d to loca locate te loca locall petr petrol oleu eum m sedi sedime ment ntat atio ion n tank tank in each each area area,, petro petrole leum um sedimentation tank can be tight or open. 5.9.30 The treatm treatment ent of termina terminal’s l’s petrol petroleum eum-co -conta ntainin ining g water water must must meet meet the require requiremen mentt of  current standards on waste water before discharging it into outside environment. 5.9.31 Petr Petrol oleu eum-c m-con onta tamin minat ated ed solid solid wast waste e (pet (petro role leum um-co -cont ntam amin inat ated ed wipe wiper, r, petro petrole leum um-contaminated sludge…) in DM & SPDM terminal must be classified at origin, gathering collection and treating as regulation. 5.10 Heating and Ventilation System 5.10.1 Designing heating and ventilation system for terminal’s items must comply with regulation in current standards on designing heating system, ventilation system and comply with the regulations of this standard. 29

TCVN 5307:2009

5.10.2 Do not instal installl underg undergrou round nd heatin heating g pipeli pipelines nes under under the floors floors that that have have high high risk of  explosion and fire. In special case, it is allowed to place heating pipelines near access door of  termina terminall but heatin heating g pipeli pipelines nes must be put in trench trench,, cover covered ed by sand sand and non-flam non-flammab mable le materials. Heat exchange equipments must meet the standard of fire and explosion safety. 5.10.3 It is permitted using heat transfer methods in DM & SPDM terminal in order to warm up products: saturated vapor, heat load petroleum, electric equipments. 5.10.4 Designing of ventilation system for house and construction in DM & SPDM terminal must base on characteristics of preserved, import-export products in that house and construction to define air exchange multiple as stated in Table 14. 5.10.5 Air drafting and discharging pipelines are located at least 2m far from access door, 4 m far  from chimney and heating pipelines, and 3m far from ground. The end point of air discharging pipeline is at least 3 m far from the outlet of drafting pipeline. Drafting and discharging pipeline must be made from fire-resistive materials.  Air drafting and discharging device must must minimize the sparking generation. generation. Table 14 – Indoor air exchange multiple and import-export preservation construction DM & SPDM Types of DM & SPDM for preservation and importAir exchange multiple in 1 hour  export No sulfur Sulfur   1. High sulfur products (sulfur content is more than 2%) 2. Desulphurized products 3. Petrol type 4. Petroleum, diesel, mazut 5. Lubricant, machine petrolatum (no dissolved substance)

6,5 6,0 5,0 3,5

10,0 8,0 8,0 7,0 5,5

Note: 1- In DM & SPDM SPDM pres preser erva vatio tion n termi termina nall cont contai aini ning ng in drum drum,, and and othe otherr cont contai aine ner, r, independent from product types, air exchange multiple must be checked at least 1 time in 1 hour  2- Air exchan exchange ge multiple multiple in Table Table are applie applied d for house house and constr construct uction ion where where are 6m high high.. To the the lowe lowerr hous house, e, ever every y 1m of heig height ht redu reduct ctio ion, n, air air exch exchan angin ging g mult multipl iple e increases 16%.

5.11 Electric, Information, Automatic Devices 5.11.1 Installing driving power, illuminant devices, communication devices and automatic control devices must comply with the Regulations in TCVN 5334 in designing and installing electric devices for DM & SPDM terminal. 5.11.2 Designing illuminant devices inside and outside of DM & SPDM terminal must comply with standards of natural and artificial illumination DM & SPDM terminal must have protective illuminator system. Tank area must have floodlight locating on pillar outside the fire isolated dyke. 5.11.3 There must have a communication system in terminal between phases in production lines and communicate with nearest fire-fighting office. 30

TCVN 5307:2009

5.11.4 DM & SPDM terminal must be equipped with fire alarm system 5.11.5 Straight lightning protection system, inductive and electrostatic lightning protection system causing from items in DM & SPDM terminal must be designed as current regulations. 5.11.6 When designing of road constructions, waterway import-export harbor, there should be installed ground system to protect devices and lightning protection system, electrostatic protection system for import-export devices. 5.11.7 If DM & SPDM terminal has pipeline that connects to main pipelines or pipelines to outdoor  import import-ex -expor portt const construc ructio tions ns where where instal installed led katot katot statio station, n, must must arrang arrange e insula insulatio tion n device devices s at connection position.

31

TCVN 5307:2009

6. Petroleum Terminal and Petroleum Products Group II 6.1 Total capacity of DM & SPDM terminal, group II, consists of all flammable and combustible materials in tank, drum and other small containers as stated in Table 15. Table 15 – Total capacity of DM & SPDM terminal, group II DM & SPDM type Maximum capacity of terminal, m3 Float Underground Type 1 2000 4000 Type 2 10000 20000 Note: 1- When When desi design gnin ing g term termina inal’s l’s capa capaci city ty,, both both float float and and unde underg rgro roun und, d, 3 consisting type 1, 2, 3 products, it can be converted as follow: 1 m DM & SPDM of type 1 is equivalent to 5 m3 DM & SPDM of type 2, type 3. And 1 m3 of floating petroleum product is equivalent to 2 m3 of underground type. 2- Terminal in group II that its capacity is greater than values in Table, must be designed as terminal in group I.

6.2 It is allowed to locate petroleum containing area in houses and production constructions but do not exceed the regulation in Table 16. 6.3 Compartment relating to preserving and allocation of DM & SPDM are located as follow: - DM & SPDM preserving compartment in drum or other small containers. - Compartment where places recovery devices and mix of lubricant. - Petroleum products pumping station. - Compartment where places drum washing devices, or emulsion heating. - Compartment contains drum shell. Compa Compartme rtment nt of inject injector, or, petrol petroleum eum preser preservat vation ion (petro (petroleu leum m is conta containe ined d in drums) drums) must must be separated from other compartment by fire isolated walls which have fire resistance limit of 0.75 h. The doors must have direct exit to outside, fire resistance limit of door material is 0,6 h at least. Table 16 – Mass regulation of DM & SPDM contained in production house. Storage means Amount of DM & SPDM, m3 Type 1 Type 2 and type 3 Cont Contai aine ned d in drum drum and and plac placed ed in room, isolated from other rooms by fire ire iso isolated walls with ith its its fire ire 10 50 resistance limit is greater than 0,75 h, had direct exit to outside Cont Contai aine ned d in drum drum and and plac placed ed in house and constructions with D and 1 5 E production Contained in floating tank, placed in room, isolated from other rooms by fire ire iso isolated walls with ith its its fire ire Under the requirement of production in 1 resistance limit is greater than 0,75 day but do not exceed h, had direct exit to outside 30 50 Cont Conta aine ined in unde ndergro rgroun und d tan tank Fobid 200 placing in house Contained in tank, placed on non1 5 32

TCVN 5307:2009

flammable bear in house and construction with D and E production. Note: - Fuel tank of engine test station must be placed out of station toward open wall with the minimum distance of 10 m toward unregulated wall. - Floating tanks with capacity more than 1 cm 3 if containing DM & SPDM type 1 and 5 m3 if containing DM & SPDM type 2, 3 in production house must have pipeline connecting to underground accident tank with the minimum distance of 1m toward tight wall, 5 m toward open wall. Capacity of accident tank must be greater than 30% of total capacity of all tanks and greater than capac capacity ity of larges largestt tank. tank. Diamete Diameterr of accide accident nt escap escape e pipeli pipeline ne must must be greater than 100 mm. When exiting accident, if it cannot be escaped by selfcombus combustio tion, n, it is necess necessary ary to arrang arrange e pumps pumps in other other rooms. rooms. Accide Accident nt escape pipe must have flame-resisting devices. - In the basement of house where has fire resistance, level I and II of rolling mill, harden mill and others, it is allowed to locate petroleum products tank with with capa capaci city ty less less than than 400 400 m3 and and do not not need need to arra arrang nge e pipe pipes s and and accident tank. - Do not permit discharging combustible and flammable DM & SPDM vapor  into compartments.

6.4 Distance from floating tank containing Dm & SPDM to houses and other constructions in terminal must comply with regulations in Table 17 Table 17 – The distances from the float tank containing petroleum and petroleum products to the terminal items The minimum distance depending The buildings and construction on the container, m works that need identifying the distance Type 1 Type 2, 3 1. Pump umping ing stati tatio on, the the plac place e for  for  prod produc uctt pack packin ing g and and othe otherr smal smalle ler  r  10 8 containers 2. Barreled petroleum product terminal and storag storage, e, inputinput-out output put conne connectio ction n 15 10 by railwa railway, y, highwa highway, y, weighi weighing ng house house and other items of the terminal 3. Overhead bare conductor Equal to 1.5 times the height of electric pole Note: 1) For the underground tank, the distance between point 1 and 2 in the table will be reduced by 50%. 2) The distance from the underground tank containing petroleum products with the flash temperature of more than 1200C to the pumping station is not regulated. 6.5. The distance from the pumping station and the storage to the railroad center point is arranged with input-output structure Type 1 (not less than 10m) and Type 2, 3 (not less than 8m). 6.6. The distances from the float tank, storage, pumping station, the place for pouring and packing road tanker and carload as well as to the barrels, to the railway and highway must not be less than the value as stipulated in Table 18. 33

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Table 18 – The distances from the float tank, storage and pumping station to the railway and highway The minimum distance depending on the type of the container, m Type of railway, highway Type 1 Type 2, 3 1. The center of the public railway 40 30 2. The center of the local railway in the 20 10 production establishment 3. The edge of the public highway 15 10 4. The edge of the local road in the 10 5 production establishment Note: 1) For the underground tank, the permissible distance in the table will be reduced by 20%. 2) If the tank, pumping station and storage have the flash temperature of more than 1200C, the distance between 2 points in the table is not identified. 6.7. The distances from the float tank and the storage to the construction items outsides the terminal are stipulated in Table 19. Table 19 – The distances from the float tank and the storage to the construction items outsides the terminal The distances to the construction items outsides the terminal, m The float tank and storage Fire resisting level I and II III IV and V 1 - Petroleum and petroleum products Type 1 - From 1 000m3 to 2 000 m3 30 30 36 3 3 - From 600 m to 1 000 m 30 24 30 3 - Under 600 m 18 18 24 2 – Petroleum and petroleum products Type 2 and 3 - From 5 000 m3 to 10 000 m3 30 30 36 3 3 - From 3 000 m to 5 000 m 24 24 30 3 - Under 3 000 m 18 18 24 3 - Under 1 000 m 12 15 18 Note: 1) For the underground tank or storage, the distances in the Table are reduced by 20%. 2) For the items outsides outsides the terminal terminal such as domestic buildings, buildings, public house and the construction works with the production grade A and B, the distances in the table will be increased by 20%. 6.8. During the design of Terminal Group II, besides the regulations mentioned in clause 6, it is necessary to apply the relevant regulations for the design of terminal level III, Group I of this standard.

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TCVN 5307:2009

Appendix A (Reference) Method for identifying the minimum mi nimum design thickness of pressure pipe The minimum design thickness of the pressure pipe will be calculated by the formula: tm = t + c Where: The pipe production standard: API 5L Gr.B tm – the minimum design thickness of the pressure pipe, calculated in mm; c – the corrosion-resistant tolerance, usually c = 0.5mm; t – the minimum thickness that is born the internal pressure, calculated by the following formula: PxD t = ——————— 2 (S x E + P x Y) P – pipe air pressure, kg/cm3; D – pipe external diameter, calculated in mm; S – material stress, (S = 20 psi ~ 1.406 kg/cm2 ~ 1.38 bar); E – the coefficient according to material quality, for steel, E = 0.8; Y – the temperature coefficient. If the temperature is l ess than 4000F (~ 2040C), Y = 0.4. During operation, after the pipe thickness is tested, if the pipe real thickness is less than the minimum design thickness of the pressure pipe (tm), the pipe must be replaced or the local pressure of the pipe must be reduced so tm value is less than the real thickness of the pipe.

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Appendix B (Regulation) Meth Method od for for calc calcul ulat atin ing g foam foamin ing g agen agents ts and and extin extingu guis ishin hing g wate waterr for for float float tank tank in the the petroleum and petroleum products terminal B.1. Calculating the necessary flow of foaming agents for tank fire extinction The necessary flow of foaming agents for tank fire extinction, Qct, will be calculated in l/s and by the following formula: Qct = Sc . Jct (//s) (B.1) Where: Sc – the surface area of the fire tank, m 2; Jct – the intensity of foaming agent injection, l/s.m2; When the foaming hydrant mounted on the tank is used, Jct will be as follow: - In case of the foaming agent with the medium expansive multiple, J ct will be taken according to Point 5.9.10.1 (or 5.9.11). - In case of the foaming agent with the low expansive multiple, Jct will be taken according to Point 5.9.10.2 (or 5.9.11). B.2. Calculating the necessary flow of foaming hydrant for tank fire extinction: (when the fire surface area is equal to the cross section area of the tank) The number of foaming hydrant NLTB (NLTB – taking the greater integer value) will be calculated in each and by the following formula: Qct NLTB = ——— (B.2) qL Where: Qct – Qct – the necessary flow of foaming agent agent for tank fire extinction, l/s; qL – the hydrant’s injection flow of foaming agent, l/s. Note: in the case of fire extinction for float roof tank buffer or the tank with inside buoy, the selection of qL must be considered the distance for injection hydrant arrangement so foam does not spill over the upturn. B.3. Calculating the necessary reserve amount of foaming agent for tank fire extinction The necessary reserve amount of foaming agent, Wdd will be calculated in litre and by the following formula: Wdd = K. NLTB.qL.t + Wd + WBT (B.3) Where: NLTB – the number of foaming hydrant, calculated in each; qL – the hydrant’s injection flow of foaming agent, agent, calculated l/s; t – the time for solution injection, calculated in second – Taken according to Point 5.9.10 (or  5.9.11); WBT – the solution amount of fire foaming agent in the fire isolated dike, identified according to Point 5.9.14, calculated in litre; K – the reserve coefficient (taken according to point 5.9.15); Wd – the solution amount of foaming agent stagnated in the pipeline, calculated in litre. In case of fixed fire extinction system, Wd is calculated as follow: Wd = (0.785 Σ i=1n d2i.li). 1000 Where: di –  – the diameter of each pipe type, calculated calculated in m; li – the length of each pipe type, calculated in m; 36

TCVN 5307:2009

If the amount of foaming agent solution stagnated in the pipeline is less than or equal to 5% of the necessary amount of foaming agent solution for fire extinction, there is no need to add more. If the amount stagnated in the pipeline is more than or equal to 5% of the required amount, an additional amount of foaming agent solution must m ust be added. B.4. Calculating the necessary amount of foaming agent reserved in the terminal for  fire extinction The necessary amount of foaming agent reserved in the terminal for fire extinction, W CTB will be calculated in litre and by the following formula: CB WCTB = Wdd —— (B.4) 100 Where: Wdd – the necessary amount of foaming solution reserved in the terminal, calculated in litre; CB – the foamin foaming g agent agent conce concentra ntratio tion n in the solutio solution n for fire fire extinc extinctio tion, n, calcu calculat lated ed in percentage. B.5. Calculating the necessary water amount to prepare the foaming agent for solution The necessary water amount to prepare the foaming agent for solution, W N will be calculated in litre and by the following formula: CN WN = Wdd —— (B.5) 100 Where: Wdd – the necessary amount amount of foaming solution reserved in the terminal, calculated calculated in litre; CN – the water concentration in the foaming solution, calculated in percentage. B.6. Calculating the necessary water flow for burnt surface and vicinal tank cooling The necessary water flow for burnt surface and vicinal tank cooling, QTM, will be calculated in l/s and by the following formula: QTM = Pc.J1 + 0.5 J2 Σ i=1nPi (B.6) Where: Pc – the perimeter of the burnt tank, calculated in m; Pi – the perimeter of the burnt vicinal tanks in the range of smaller distance or 2 times longer than the burnt tank diameter, calculated in m; J1 – the intensity of cooling-water injection to the burnt tank, calculated in l/s.m; J2 – the intensity of cooling-water injection to the vicinal tanks, calculated in l/s.m; J1, J2 – according to point 5.9.16.

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TCVN 5307:2009

Construction Construction works

1. Fire truck input-output gate 2. Input-Output ray - One direction - Two direction

APPENDIX C (Regulation) Criteria of initial fire prevention equipment at construction works CO2 Truck Powde Sand tank Water  extinguishe Blanket **** m Note powder  m3 r tank Shovel tank Bucket r  fire *** , unit 200l, , unit extinguish 1.55Kg 0.5 1 1x1 1x 1x1. 1. Each fire plug use 6-10Kg unit er ** ≥25Kg 2Kg 5 2 for one tank 6-10Kg One tank/fire plug 1 1 1 1 2 1

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1

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-

-

-

-

1

1

2

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-

-

2

-

-

-

-

-

2

2

4

2

3. Filling station (