MD1-0-T-060-05-00614-A Method Statement For Chemical Cleaning (Pre-Boiler Alkali Cleaning)

 

 

FOR INFORMATION 

 A

 Apr.10.. 2014   Apr.10

ISSUE FOR APPROV APPROVAL AL

REV.

DATE

DESCRIPTI DESCRIPTION ON

J.M Park DSGN

K.S.Kim CHKD

J.Son APPD

PROJECT :

TWO(2) x 500MW MONG DUONG 1 THERMAL POWER PLANT EMPLOYER :

CONSULTANT CONSULT ANT :

SUCONTRACTOR :

CONTRACTOR :

DESIGNED BY

J.M Park

 

CHECKED BY

K.S.Kim

 Apr.10. 2014 2014 DATE

 

 APPROVED BY

J.Son

DATE

TITLE :

METHOD STATEMENT FOR CHEMICAL CLEANING (PRE-BOILER ALKALI CLEANING)

 Apr.10. 2014 2014 DATE DATE

PROJECT NUMBE NUMBER R

DOCUMENT NUMBER

REV REV..

 Apr.10. 2014 2014

 ADB/MD1-TPIP/EPC150911  ADB/MD1-TPIP/EPC15091 1

MD1-0-T-060-05-00614

 A

 

Two(2) x 500MW 5 00MW Mong Duong 1 Thermal Power Plant  Chemical Cleaning Procedure REV. REV. 0

CONTENTS

1. PURPOSE ----------------------------------------------------------------------------------------3

2. SCOPE OF APPLICATION ------------------------------------------------------------------3

3. REFERENCE DOCUMENTS AND DRAWINGSDRAWINGS- --------------------------------------- ------------------------------3 ------3

4. REFERENCE ------------------------------------------------------------------------------------3

5. RESPONSIBILITIES --------------------------------------------------------------------------4

6. SAFETY CONTROL ---------------------------------------------------------------------------4

7. PRECAUTIONS ---------------------------------------------------------------------------------5

8. CLASSIFICATION CLASSIFICATION AS LOOP PACKAGE---------PACKAGE---------- - ------------------------------------5 ------------------- -----------------5

9. CLANING VOLUME---------------------------------------------------------------------------5

10. MAIN TEMPORARY FACILITIES------------------------------------------------ACILITIES-------------------------- ------------------------------6 -------6

11. UTILITIES CONSUMPTION----------------------------------------------------------------7

12.TEMPORARY PIPING-------------------------------------------------------------------------8

13. CHEMICAL CLEANING PROCENURE--------------------------------------------------9 13.1.

ATTACHMENTS

1)

Site Inspection / Test Notification

2)

Temporary empora ry Piping Dwg.

3)

Valve List

4)

MSDS

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1.  PURPOSE

This specification covers the requirements for chemical cleaning of Mong Dong1 thermal  power plant project.

Before a new thermal power plant is put into service the internal of tube

and pipe line should be cleaned by alkali cleaning to remove oil, grease, greas e, dirt.

2.  SCOPE OF APPLICATION

This procedure shall be applied to the chemical cleaning - 

Condensate system

- 

Boiler Feedwater system

- 

HRA & Primary Superheater

- 

Intermediate & Finishing Superheaters

- 

3.  Reference Documents and Drawings

3.1.  P&ID - 

MD1-0-V-120-21-00011(1/4),Rev.2 MD1-0-V-12021-00011(1/4),Rev.2 : Condensate System

- 

MD1-0-V-120-21-00013(3/4),Rev.2 MD1-0-V-12021-00013(3/4),Rev.2 : Condensate System

- 

MD1-0-V-120-21-00031(1/2),Rev.2 MD1-0-V-12021-00031(1/2),Rev.2 : Feedwater Feedwater System

- 

MD1-0-V-120-21-00032(2/2),Rev.2 MD1-0-V-12 0-21-00032(2/2),Rev.2 : Feedwater Feedwater System

- 

MD1-D-V-161-21-06103 : Feedwater & Economizer System

- 

MD1-D-V-161-21-06105 : HRA & Premary Superheater System

- 

MD1-D-V-161-21-06106 MD1-DV-161-21-06106 : Intermediate & Finishing Superheater Superheaterss System

4.  REFERENCE

4.1.  American Society testing Material- ASTM 4.2.  American National Standard Institute-ANSI 4.3.  Hydraulic Institute Standard-HIS 4.4.  Korean Standard-KS 4.5.  Japanese Industrial Standard-JIS  4.6.  Regulation related to preservation for environment and water quality qualit y 4.7.  Regulation related to poison and toxic chemicals treatment

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5.  RESPONSIBILITIES

5.1.  Construction Manager shall administrate and supervise for the performance of all work items described in this procedure. 5.2.  Mechanical Manager is responsible for carrying out the required works for chemical cleaning. Quality  assurance manager is responsible for the inspection and conformation for the materials and works. 5.3.  Safety Control Manager shall administrate and supervise for chemical cleaning work and checking the job site.

6.  SAFETY CONTROL

1)  General Consideration It is fully supplemented to the existing conventional acid type cleansers. It has no toxic gas  being generated, no inflammability, no vaporific, vaporific, no explosivity, and harmless to the human  being's external body. The personnel should be knowledgeable of the hazards involved and adequate safety guidelines should be made available to all al l parties involved. 2)  Safety Control A.  The cleaning area should be closed off to unauthorized personnel. B.   Necessary warning signs are posted. C.  Cleaning agents, chemical, and other all of the chemical should be transported in closed containers, drum, or tanks, etc D.  Protective clothing such as goggles, gloves, aprons, boots, helmets, etc. should be worn  by the personnel involved E.  During the chemical cleaning operation, clean running water should be available to wash away splashed hazardous chemicals. F.  All piping and equipment used for chemical cleaning should be pressure tested prior to  being used. All vents and overflows should be directed to safe locations, away from  possible contact with personnel. G. Spent chemicals should be safely disposed in accordance with the Environmental  protection Law.

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7.  PRECAUTIONS

1)  Ascertain that no damage to personal could occur at alkali cleaning area. Install the safety ropes around the chemical cleaning area are a and the placard of danger or signboard 2)  Protective clothing and gloves should be worn when handling the chemicals. Eye  protection also to be provided. 3)  Communication system between conductor and operator should be arranged. 4)  The work area should be well lighted for around-the-clock operation and should be clear of obstruction. 5)  All instruments, such as orifice plates, level instruments, gauge glasses, thermo-wells, and any other instruments shall be protected from cleaning solution by any means of substitution by spool assembly, valve closure, blocking off and/or removal from the line, etc.

6) Check that all temporary piping and equipment are properly connected to the system   Hydrostatic testing should be done prior to start normal cleaning operation 

8.  CLASSIFI CLASSIFICA CATION TION AS LOOP LOO P PACKAGES PACKAGES

-  Loop #1 : Condensate & Feedwater system Unit #1 -  Loop #2 : Condensate & Feedwater system Unit #2

9.  CLANING VOLUME

 No.

Description

1

Condensate System

Volume/Loop#1(m3) Volume/Loop#2(m3)

Grand steam condenser

1.0

1.0

Feedwater heater#1A/1B

8.4

8.4

Feedwater heater#2

7.1

7.1

Feedwater heater#3

6.2

6.2

Feedwater heater#4

5.7

5.7

Piping

81.1

82.0

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Remark

 

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2

Feedwater System

Feedwater heater #6

5.9

5.9

Feedwater heater #7

6.4

6.4

Feedwater heater #8

5.8

5.8

126.7

131.0

Sub-Total

254.3

259.5

Temporary Piping

25.7

25.5

280.0

285.0

Piping

3

Grand- Total

565㎥ 

10.  MAIN TEMPORARY FACILITIES

10.1.  Temporary Equipment

 No.

Description

Capacity 3

Quantity

1

Circulat Circulation ion Pump

100HP x 480m /hr x 80m

1 set

2

Chemical Feed Pump

1” x 100ℓ/min  100ℓ/min 

2 sets

Remark

SUS

Chemical Injection 3

Diaphragm Pump

1” x 240ℓ/min  240ℓ/min 

4

Portable Boiler

5.0 ton/hr

5

Circulation tank

20㎥ 20㎥  x C.S

1 set

Steel

6

Heat exchanger exchanger

3,000,000 kcal/hr

1 set

SUS

7

Jet Cleaner

250 Bar x 15HP, 16 ℓ/min

2sets

Mech-cleaning

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2 sets

㎠  x 7kg/ 7kg/㎠

6 

1 set

 

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10.2.  Temporary Materials  No.

Description

Capacity

1

Pipe & Fitting Fittin g

SPP Sch. 20

2

Gate valve

10kg/cm , Flanged, Forged

3

Strainer

10kg/cm , Flanged

4

Check valve

5

Gaskets

6

Bolt, Nut, Consumables & Tools

Quantity

Remark

L/S Per each size

2

L/S Per each size

2

L/S 10”

10kg/cm , Flanged

2

L/S 8”, 4”

10kg/cm2, Non asbestos

L/S Per each size L/S

10.3.  Analytic Equipment All steps of the process are guarded over analytically. The Following equipment is required and will be temporarily provided  No.

Description

Capacity

Quantity

1 ~ 14

2 sets

NTU 0~1000

1 set

0~3999㎲ 0~3999 ㎲ 

1 set

0~1000ppm

1 set

1

p H meter

2

Turbidity meter

3

Conductivity meter

4

Oil Meter

5

Analysis reagent

-

1 set

6

Analysis apparatus

-

1 set

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11.  UTILITIES CONSUMPTION

11.1.  Demineralized Water (Total Volume : 565㎥)  No.

Step

Work Volume(m Volume(m3)

Times

Volume(m3)

Remark Include Temporary

1

Water Flushing Flushin g

565

2

1,130

2

Alkali Cleaning

565

1

565

3

Water Rinsing

565

1

565

4

Final Rinsing

565

1

565

5

2,825m  

3

Demi.- water Consumption(m Consumption(m )

3

11.2.  Portable Steam(Total Volume : 565㎥)  No.

Step

Description

1

Water flushing flushin g

5 ton/hr x 3 hr =

3

Alkali Cleaning

5 ton/hr x 10 hr =

4

Water Rinsing

5 ton/hr x 8 hr =

Portable Steam Consumption(m Consumption(m3)

Package

2

3

Volume(m )

Remark

100

100m3 

 Note: According According to the variation variation of ambient ambient air temperature, temperature, the steam consumption has to be changed changed

12.  TEMPORARY PIPING

12.1.  Temporary Pump Station area 1)  The pump station will be placed outside near road between Boiler Train A & B 2)  Preparation of the ground 3)  Delivery and placement of the temporary equipment 12.2.  Connect Point 1)  Supply line connects a temporary piping with pipe DN200 to the check valve bonnet

→ after removes internals of check valve : Circulation pump skid supply line   13LCB11AP001/13LCB12 13LCB1 1AP001/13LCB12AP001/13LCB1 AP001/13LCB11AP001→Grand 1AP001→Grand Steam Condenser→  Condenser→ 

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 NO.1 LP Feedwater HeaterA/B→NO.2 LP Feedwater→NO.3 Feedwater→NO.3 LP Feedwater  Feedwater   →NO.4 LP Feedwater→Deaterator & Feedwater Tank Tank Bypass→  Bypass→   Boiler Feedwater Booster Pumps Bypass(13LAC13AP001/13LAC12AP001 Bypass(13LAC13AP001/13LAC12AP001// →Boiler Feedwater Pumps(13LAC23AP001/13LAC22AP001/13L Pumps(13LAC23AP001/13LAC22AP001/13LAC21AP001) AC21AP001)   →NO.6/7/8HP Feedwater Heater→11HAC01 Heat er→11HAC01AA091(Check AA091(Check Valve Valve Internal Remove)  Remove)   →200A Temporary Return Line  Line 

2)  Return line connects a temporary t emporary piping header with pipe DN200 to the Check V Valve alve Circulation Tank  

11HAC01AA091(Internal 11H AC01AA091(Internal Remove) 11LAE10AA402/11LAE20AA402

12.3.  Electrical Power 1)  The temporary pump station needs an electrical power supply. supply. 2)  The 2 motors of 75kW and 1 motor 150kW 3)  Power supply to the pump station 4)  Temporary Generator 5)  Rotation test 12.4.  Service Line to Pump Station 1)  Demineralized water line 2)  Steam supply line from portable boiler 3)  Waste water transfer line to waste water treatment pond 12.5.  Sampling Point The sampling point will be installed at the inlet of the temporary circulation pumps. 12.6.  Gauge installation Pressure gauges will be installed on discharge line of circulation pumps and temperature gauges will be installed on supply and Return line.

13.  ALKALI CLEANING PROCEDURE This procedure mentioned in this document consists of following sequence of Operation.

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[ CAUTION ]

AII necessary permits and/or safety documentation required to conduct the work must  be in force prior to starting. Ensure that all personnel not involved in conducting the cleaning activities are clear of the area. When conducting these activities extra vigilance, caution and precautions are required to ensure that they are achieved in a safe manner.

1)  Alkali cleaning for the boiler system with following procedure

Temporary Temporar y Piping Pipi ng

:

Air Leak Test – 5Bar

Water Flushing& Leak Test

:

Heating Up 70~80

Alkali Cleaning

:

Trisodium Trisodium Phosphate/Disodium Phosphate/Disodium Phosphate Oil, Alkalinity,PH Alkalinity,PH : 2~3 untill the constant

Water Rinsing 1~2 Time

:

PH-Control PH-Cont rol – PH7.5~8.5

Final Water Rinsing

:

Demi-water –PH 7.5~8.5

Inspection & Reinstall

:

Remain Oil Check : 1ppm Below Visual Check (Pipe Line)

 NO

YES Protection

:

㎥ 

Waste Water Pond : 1,000

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:

N2-Gas Charging or Elimin-ox

W W.. W. T. Pond

 

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2)  Cleaning Flow Chart

Circulation Pump Skid

13LCB11AP001 13LCB11AP001

Grand Steam Condenser

13LCB12AP001 13LCB13AP001  NO.1LP Feedwater Heater A/B

NO.2/3/4 LP Feedwater Heater

D/A & F/D Tank

13LCA26BR001DN400

13LAB11BR001DN350

By-Pass

13LAB12BR001DN350 13LAB13BR001DN350

F/D Booster pump,F/D Pumnp Bypass

 NO.6/7/8 HP F/W Heater

13LAB30BR001DN600 13LAB30BR001DN600

13LAB33BR001DN600 13LAB33BR001DN600

11LAB33BR001DN450 11LAB33BR001DN450 12LAB33BR001DN450

11HAC01AA091

Temporary emporar y Piping Pipin g

Circulation Circul ation Tank (Pump Skid Return)

12HAC01AA091

3)  Cleaning media (Total volume 565㎥)

 No

Chemical

Purity (%)

Use Concentration

Q’ty(Kg)

Remark

(%) 1

Tri-Sodium Phosphate

98

1.0

5,765

Alkali cleaning

2

Di-Sodium Phosphate

98

0.3

1,730

Alkali cleaning

3

Sodium Sulfite

98

0.2

1,153

Alkali cleaning

4

Sodium Carbonate

98

0.5

2,883

Alkali cleaning

5

Detergent

100

0.02

113

Alkali cleaning

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4)  Preparation a.  All MOV(Motor operated valve) must be ready for operation.  b.  All valve must be clearly identified and labeled l abeled after checking the correct valve position according to the valve list. c.  Vents lines must be conducted to the ground, if not definitely done so then at leat by by hoses to avoid damage to the insulation and enable proper venting. d.  All temporary valves must be installed near the t he connection point of the line to avoid dead ends. e.  After completion of the temporary piping the whole system has to be filled fi lled up and a tightness test has to be executed. f.  The internal of all control valves have to be removed and replaced by spool pieces. g.  Waste water collecting colle cting pit must be empty, empty, discharge pumps ready for operation. operat ion. h.  Sufficient light in all working area. i.  Insulation must be completed to maintain temperature during alkali cleaning.  j.  After each step is performed, additional water flushing must be performed to meet design which is agreed with alkali cleaning company. company. k.  Replace with the new gaskets on the valve & flange . l.  Remove the flow meter and place the temporary spool, if any. m.  Close the inlet/outlet valves of the control valve and open the bypass valve, if any. n.  Install the temporary instruments on the places that the measuring is required. o.  It shall be drained well using Nitrogen gas or oil free dry air.  p.  Close all root valves of permanent instruments.

5)  Water flushing a.  Before starting cleaning regulates all section valve in operation condition.  b.  Fill the Demi. Water to the circulation water tank. c.  Start the circulation pump and fill the water to the cleaning section. d.  Check the water leakage during circulation the water wa ter continuously continuously,, if and leakage is found, it should be repaired. e.  Check the water quality. If the turbidity is high or much foreign materials are existed exist ed drain all water from the condensate c ondensate & feedwater system and refill the new water. f.  After checking the all circulation system, increase the water temperature up to 70℃±5℃ 

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 by using the heating coil in the circulation water tank. g.  Check that the normal water flow is maintained at each part. h.  After one hour circulation make the flow to reverse direction. And repeat it several times. i.  Finish the water flushing if the water quality qualit y is good turbidity (30ppm) 6)  Alkali cleaning a.  Before starting cleaning regulates all section valve in operation condition.  b.  Start the circulation water pump and fill the water to the cleaning suction. c.  Supply the heating steam to the heating coils and increase the water temperature. d.  Put the acid chemical into the system at 70 ℃ of water temperature. [ WARNING] 

  DURING THE CHEMICAL CLEANING OPERATION, CLEAN RUNNING WATER SHOULD BE AVAILABLE TO WASH AWAY SPLASHED HAZARDOUS CHEMICALS. 



  PROTECTIVE CLOTHING AND GLOVES SHOULD BE WORN WHEN HANDLING THE CHEMICALS.



  EYE PROTECTION ALSO TO BE PROVIDED.



   NECESSARY WARNING SIGNS ARE POSTED



  THE CLEANING AREA SHOULD BE CLOSED OFF TO UNAUTHOTIZED PERSONNEL. P ERSONNEL.



  TEMPORARY USED IN THE BOILER FOR THE DIESEL BLOCKS AROUND THE FIRE.



  PREVENT A FIREIN AN DIESEL TANK CAN BE A FIRE EXTINGUISHER.

e.  Maintain the water temperature 80℃±5℃. f.  During alkali cleaning check the acid and alkali concentration and pH /oil concentration at intervals of one hour by sampling g.  Make the flow to reverse and direction at interval of two hours. h.  If the alkali concentration and pH/oil concentration level are maintained constantly over three ~two times the alkali cleaning works will be finished. 7)  Drain of alkali cleaning solution After finishing the each step of alkali cleaning, the alkali cleaning solution will be drain to the temporary waste water pond through the chemical injection injecti on tank area sump.

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8)  Water rinsing After finishing the drain of each section secti on completely the water rinsing works to be done same as water flushing until the pH level is maintained to 7.5~8.5. The pH value of the solution is to be kept in required level. 9)  Final water rinsing The continuous supply of demi-water is reached the PH is 7.5~8.5, circulating water inlet and outlet check the turbidity level is equal to t o the finish final water rinsing. The oil concentration in the water comes up, action levels less than 1ppm shut down Perform the following tasks.  tasks.  10)  All piping and equipment in water drained and to be ready for the inspection. inspect ion.

11)  Inspection and restoration a.  Inspection This process confirm a result of chemical cleaning. At that time we will refer to a analysis data.  b.  Visual check It shall be no oil, grease, paint in i n pipe and equipment inside. c.  Restoration Restore the all temporary piping and equipment

12)  Conservation After completion of restoration, the boiler system proper and the related piping are to filled with the Demi. Water contained by Eliminox 500ppm or charged with nitrogen gas (0.3~0.5kg /㎠)

13.1.  Attachments

1)

Site Inspection / Test Notification

2)

Temporary Piping Dwg.

3) 4)

Valve Control List MSDS

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1)

Site Inspection / Test Notification

TWO (2) x 500MW MONG DOUNG 1 THERMAL POWER PLANT   SITE  INSPECTION   /   TEST  NOTIFICATION 

 NOTIFICA  NOTIFIC ATION NO.:

RE REF F. DRAWING DRAWING :

DISCIPLINE DISCIP LINE :

REF.. ITP NO: REF

SUBCONTRACTOR :

DATE DATE :

WITNESS/HOLD   NO 

DESCRIPTION 

LOCATION 

DATE/TIME 

REMARKS  HDEC 



 

PREPARED BY :

RECEIVED BY :

RECEIVED BY :

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:FC,FE,LCV,CHECKV/V :PSV

INSTALL HYDRO.TEST GAGING

:AT

SCREEN REMOVE

:CF

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INTERNAL REMOVE

INSTALL REMOVE SPOOL

 

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TEMPORARY PIPING BYPASS

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V LVE CONTROL LIST

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Material Safety Data Sheet  Sodium carbonate  ACC# 21080

Section 1 - Chemical Product and Company Identification MSDS Name: Sodium Name: Sodium carbonate Catalog Numbers: AC123670000, Numbers: AC123670000, AC123670010, AC123670025, AC206800000, AC206800010, AC206800025, AC207760000, AC207765000, AC207810000, AC207810010, AC424280000, AC424285000, S71987, S71987-1, S73074, S73075, S78416, S78419, S93359, S93360, BP357-1, NC9296359, NC9644731, S261-10, S263-1, S263-10, S263-3, S263-50, S263-500, S263-50LC, S495-500, XXS263PD140KG

Synonyms: Crystal Synonyms:  Crystal carbonate; Disodium carbonate; Sal soda; Soda ash; Washing soda; Soda, calcined. Company Identification:  Identification:  Fisher Scientific 1 Reagent Lane Fair Lawn, NJ 07410 For information, call: 201-796-7100 call: 201-796-7100 Emergency Number: 201-796-7100 Number: 201-796-7100 For CHEMTREC assistance, call: 800-424-9300 call:  800-424-9300 For International CHEMTREC assistance, call: 703-527-3887 call: 703-527-3887

Section 2 - Composition, Information on Ingredients

CAS#   CAS# 497-19-8

Chemical Name  Name 

Percent   Percent

EINECS/ELINCS   EINECS/ELINCS

100

207-838-8

Sodium carbonate anhydrou anhydrous s

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Section 3 - Hazards Identification

EMERGENCY OVERVIEW  Appearance: white powder.

Warning! Harmful if inhaled. May cause eye and skin irritation with possible burns. May cause respiratory tract irritation. Hygroscopic (absorbs moisture from the air). Target Organs: Eyes, skin.

Effects  Potential Health Effects 

Eye: May Eye:  May result in corneal injury. Contact with eyes may cause severe irritation, and possible eye burns. Skin: Contact Skin:  Contact with skin causes irritation and possible po ssible burns, especially if the skin is wet or moist. Ingestion: May Ingestion:  May cause irritation of the digestive di gestive tract. Inhalation: Harmful Inhalation:  Harmful if inhaled. May cause irritation of the respiratory tract with burning pain in the nose and throat, thr oat, coughing, wheezing, shortness of breath and pul pulmonary monary edema. Chronic: Prolonged Chronic:  Prolonged or repeated inhalation may cause nosebleeds, nasal congestion, erosion of the teeth, perforation per foration of the nasal septum, chest pain and bronchitis.

Section 4 - First Aid Measures

Eyes: Immediately Eyes:  Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid imme diately. Skin: Get Skin:  Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. reu se. Ingestion: Do Ingestion:  Do not induce vomiting. vomitin g. If victim is conscious and alert, give 2-4 cupfuls of of

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Two(2) x 500MW Mong Duong 1 Thermal Power Plant  Chemical Cleaning Procedure REV. REV. 0 milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.

Inhalation: Remove Inhalation:  Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear. Notes to Physician: Treat Physician: Treat symptomatically and supportively.

Section 5 - Fire Fighting Measures

General Information: As Information: As in any fire, wear w ear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Runoff from fire control or dilution dil ution water may cause pollution.

Extinguishing Media: Substance Media: Substance is noncombustible; use agent most appropriate to to extinguish surrounding fire. Flash Point: Not Point: Not applicable. Autoignition Temperature: Not Temperature: Not available. Explosion Limits, Lower:Not Lower:Not available. Upper: Not Upper:  Not available. NFPA Rating: (estimated) Rating: (estimated) Health: 2; Flammability: 0; Instability: 0

Section 6 - Accidental Release Measures

General Information: Use Information: Use proper personal protective equipment as indicated in Section 8. Spills/Leaks: Vacuum Spills/Leaks:  Vacuum or sweep up material and place into a suitable di disposal sposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions. Provide ventilation.

Section 7 - Handling and Storage

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Two(2) x 500MW Mong Duong 1 Thermal Power Plant  Chemical Cleaning Procedure REV. REV. 0

Handling: Wash Handling:  Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize Mini mize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Avoid ingestion and inhalation. Storage: Store Storage:  Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Section 8 - Exposure Controls, Personal Protection

Engineering Controls: Good Controls: Good general ventilation should be b e sufficient to control airborne levels. Facilities storing or utilizing this material should be equipped equi pped with an eyewash facility and a safety shower.

Exposure Limits  Limits 

Chemical Name  Name 

ACGIH   ACGIH

NIOSH   NIOSH

OSHA - Final PELs  PELs 

none listed

none listed

Sodium carbonate anhydrous

none listed

OSHA Vacated PELs: Sodium PELs: Sodium carbonate anhydrous: No OSHA Vacated PELs are a re listed for this chemical. Personal Protective Equipment  Equipment  Eyes: Wear Eyes:  Wear appropriate protective prot ective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear Skin:  Wear appropriate protective gloves and clothing to prevent skin exposure. Clothing: Wear Clothing:  Wear appropriate protective clothing to minimize contact with skin. Respirators: Follow Respirators:  Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

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Section 9 - Physical and Chemical Properties

Physical State: Powder State: Powder Appearance: white Appearance:  white Odor: odorless Odor:  odorless pH: 11.6 pH:  11.6 (solution) Vapor Pressure: Not Pressure: Not available. Vapor Density: Not Density: Not available. Evaporation Rate:Not Rate:Not available. Viscosity: Not Viscosity:  Not available. Boiling Point: 1600 Point: 1600 deg C Freezing/Melting Point:851 Point:851 deg C

Decomposition Temperature:400 Temperature:400 deg C Solubility: Soluble. Solubility:  Soluble. Specific Gravity/Density:2.53 Gravity/Density:2.53 Molecular Formula:Na2CO3 Formula:Na2CO3 Molecular Weight:105.99 Weight:105.99

Section 10 - Stability and Reactivity

Chemical Stability: Stable Stability: Stable at room temperature in closed containers under normal storage and handling conditions. Decomposed by acids with effervescence, evolution of carbon dioxide. Conditions to Avoid: Dust Avoid: Dust generation, excess heat, moist air. Incompatibilities with Other Materials: Reacts Materials: Reacts explosively with red-hot alumium metal. Incompatible with ammonia + silver nitrate, 2,4-dinitrotoluene, 2,4,6-trinitrotoluene, sulfuric acid, sodium sulfide + water, lithium, phosphorus pentoxide, fluorine, and hydrogen peroxide. Hot concentrated solutions of sodium carbonate are mildly corrosive to steel.

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Two(2) x 500MW Mong Duong 1 Thermal Power Plant  Chemical Cleaning Procedure REV. REV. 0 Hazardous Decomposition Products: Carbon Products: Carbon dioxide, toxic fumes of sodium oxide. Hazardous Polymerization: Has Polymerization: Has not been reported.

Section 11 - Toxicologica Toxicologicall Informa Information tion

RTECS#:   RTECS#: CAS# 497-19-8: CAS#  497-19-8: VZ4050000 LD50/LC50:   LD50/LC50: CAS# 497-19-8: Draize test, rabbit, eye: 100 mg/24H Moderate; Draize test, rabbit, eye: 50 mg Severe; Draize test, rabbit, skin: 500 mg/24H Mild; Inhalation, mouse: LC50 = 1200 mg/m3/2H;

Inhalation, rat: LC50 = 2300 mg/m3/2H; Oral, mouse: LD50 = 6600 mg/kg; Oral, mouse: LD50 = 6600 mg/kg;

.

Oral, rat: LD50 = 4090 mg/kg;

Carcinogenicity:   Carcinogenicity: CAS# 497-19-8: Not listed by ACGIH, IARC, NTP, or CA Prop 65.

Epidemiology: No Epidemiology:  No information found Teratogenicity: No Teratogenicity:  No information found Reproductive Effects: No Effects: No information found Mutagenicity: No Mutagenicity:  No information found Neurotoxicity: No Neurotoxicity:  No information found Other Studies:  Studies: 

Section 12 - Ecological Information

Ecotoxicity: Fish: Ecotoxicity:  Fish: Bluegill/Sunfish: LC50 = 320 mg/L; 96 Hr.; Static Conditions

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Two(2) x 500MW Mong Duong 1 Thermal Power Plant  Chemical Cleaning Procedure REV. REV. 0

Section 13 - Disposal Considera Considerations tions

Chemical waste generators must determine whether a discarded chemical is classified as a hazardous waste. US EPA guidelines for the classification determination are listed in i n 40 CFR Parts 261.3. Additionally, waste generators must consult state and local hazardous waste regulations to ensure complete and accurate classification. RCRA P-Series: None P-Series: None listed. RCRA U-Series: None U-Series: None listed.

Section 14 - Transport Information

US DOT  DOT 

Canada TDG  TDG 

Shipping Name:  Name: 

Not regulated

Not Regulated

Hazard Class:  Class:  UN Number:  Number:  Packing Group:  Group: 

Section 15 - Regulatory Information

US FEDERAL  TSCA   TSCA CAS# 497-19-8 is listed on the TSCA inventory. Health & Safety Reporting List  List  None of the chemicals are on the Health & Safety Reporting List. Chemical Test Rules  Rules  None of the chemicals in this product are under a Chemical Test Rule. Section 12b  12b  None of the chemicals are listed under TSCA Section 12b.

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Two(2) x 500MW Mong Duong 1 Thermal Power Plant  Chemical Cleaning Procedure REV. REV. 0 TSCA Significant New Use Rule  Rule   None of the chemicals in this material have a SNUR under TSCA. CERCLA Hazardous Substances and corresponding RQs  RQs  None of the chemicals in this material have an RQ. SARA Section 302 Extremely Hazardous Substances  Substances  None of the chemicals in this product have a TPQ. SARA Codes  Codes  CAS # 497-19-8: immediate. Section 313  313  No chemicals are reportable under Section 313. Clean Air Act:  Act:  This material does not contain any hazardous air pollutants. This material does not contain any Class 1 Ozone depletors. This material does not contain any Class Cl ass 2 Ozone depletors. Clean Water Act:  Act:  None of the chemicals in this product are listed as Hazardous Substances under th the e

CWA. None of the chemicals in this product are listed as Priority Pollutants under the CWA. None of the chemicals in this product are listed as Toxic Pollutants under tthe he CWA. OSHA:   OSHA: None of the chemicals in this product p roduct are considered highly hazardous by OSHA. STATE   STATE CAS# 497-19-8 is not present on state lists from CA, PA, MN, MA, FL, or NJ.

California Prop 65  65 

California No Significant Risk Level: None of the chemicals in this product are listed.

European/International European/Internation al Regulations  European Labeling in Accordance with EC Directives  Directives  Hazard Symbols:  Symbols:  XI Risk Phrases:  Phrases:  R 36 Irritating to eyes.

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Two(2) x 500MW Mong Duong 1 Thermal Power Plant  Chemical Cleaning Procedure REV. REV. 0 Safety Phrases:  Phrases:  S 22 Do not breathe dust. S 26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

WGK (Water Danger/Protection)  Danger/Protection)  CAS# 497-19-8: 1 Canada - DSL/NDSL  DSL/NDSL  CAS# 497-19-8 is listed on Canada's DSL List. Canada - WHMIS  WHMIS  This product has a WHMIS classification of D2B. This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations and the MSDS contains all of the information i nformation required by those regulations. Canadian Ingredient Disclosure List  List  

CAS# 497-19-8 is listed on the th e Canadian Ingredient Disclosure List.

Section 16 - Additional Information

MSDS Creation Date: 7/12/1999 Date: 7/12/1999 Revision #3 Date: 3/07/2005 Date: 3/07/2005

The information above is believed to be accurate and represents the best information currently available to us. However, we make no warranty of merchantability merchantability or any other warranty, express or implied, with respect to such information, and we assume no liability resulting from its use. Users should make their own investigati investigations ons to determine the su suitability itability of the information for their particular particular purposes. In no event shall Fisher be liable for any claims, losses, or damages of any third party or for lost profits or any special, indirect, incidental, consequential or exemplary damages, howsoever arising, even if Fisher has been advised of the possibility of such damages.

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Two(2) x 500MW Mong Duong 1 Thermal Power Plant  Chemical Cleaning Procedure REV. REV. 0 TRISODIUM PHOSPHATE 

Sodium phosphate tribasic dodecahydrate do decahydrate  ACC# 24500

Section 1 - Chemical Product and Company Identification MSDS Name: Sodium Name: Sodium phosphate tribasic dodecahydrate Catalog Numbers: AC206520010, Numbers: AC206520010, AC206520250, AC424400250, AC424405000, AC9537671, NC9810137, S376-3, S376-50, S377-3, S377-50, S377-500, S3773LC, S377500LC, XXS377PD12KG Synonyms: Trisodium Synonyms:  Trisodium orthophosphate dodecahydrate; Sodium phosphate ph osphate tribasic dodecahydrate; Trisodium phosphate dodecahydrate; TSP dodecahydrate. Company Identification:  Identification:  Fisher Scientific 1 Reagent Lane

Fair Lawn, NJ 07410 For information, call: 201-796-7100 call: 201-796-7100 Emergency Number: 201-796-7100 Number: 201-796-7100 For CHEMTREC assistance, call: 800-424-9300 call:  800-424-9300 For International CHEMTREC assistance, call: 703-527-3887 call: 703-527-3887

Section 2 - Composition, Information on Ingredients

CAS#   CAS# 10101-89-0

Chemical Name  Name 

Percent   Percent

EINECS/ELINCS   EINECS/ELINCS

>98

unlisted

Tribasic sodium phosphate dodecahydrate

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Two(2) x 500MW Mong Duong 1 Thermal Power Plant  Chemical Cleaning Procedure REV. REV. 0

Section 3 - Hazards Identification

EMERGENCY OVERVIEW  Appearance: colorless or white solid. i rritation. Warning! Causes eye, skin, and respiratory tract irritation. Target Organs: Respiratory system, eyes, skin.

Effects  Potential Health Effects  Eye: Causes Eye:  Causes eye irritation. May cause transient corneal injury. i njury. Skin: Causes Skin:  Causes skin irritation. Ingestion: Causes Ingestion:  Causes digestive tract irritation.

Inhalation: Causes Inhalation:  Causes respiratory tract irritation. Chronic: Chronic Chronic:  Chronic inhalation may cause effects similar to those of acute inhalation. Effects may be delayed.

Section 4 - First Aid Measures

Eyes: Get Eyes:  Get medical aid immediately. Do NOT allow victim to rub eyes or keep eyes closed. Extensive irrigation with water is required requi red (at least 30 minutes). Skin: Get Skin:  Get medical aid immediately. Immediately flush skin with plenty of water for at least l east 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes. Ingestion: Do Ingestion:  Do not induce vomiting. vomitin g. If victim is conscious and alert, give 2-4 cupfuls of of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately. Inhalation: Get Inhalation:  Get medical aid immediately. Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Do NOT use mouth-to-mouth resuscitation. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask. Notes to Physician: Treat Physician: Treat symptomatically and supportively

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Two(2) x 500MW Mong Duong 1 Thermal Power Plant  Chemical Cleaning Procedure REV. REV. 0

Section 5 - Fire Fighting Measures

General Information: As Information: As in any fire, wear w ear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Material will not burn. Extinguishing Media: Substance Media: Substance is noncombustible; use agent most appropriate to to extinguish surrounding fire. Flash Point: Not Point: Not applicable. Autoignition Temperature: Not Temperature: Not applicable. Explosion Limits, Lower:Not Lower:Not available. Upper: Not Upper:  Not available. NFPA Rating: (estimated) Rating: (estimated) Health: 2; Flammability: 0; Instability: 0

Section 6 - Accidental Release Measures

General Information: Use Information: Use proper personal protective equipment as indicated in Section 8. Spills/Leaks: Vacuum Spills/Leaks:  Vacuum or sweep up material and place into a suitable di disposal sposal container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating g enerating dusty conditions. Provide ventilation.

Section 7 - Handling and Storage

Handling: Wash Handling:  Wash thoroughly after handling. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. Use with adequate ventilation. Discard contaminated shoes.

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Two(2) x 500MW Mong Duong 1 Thermal Power Plant  Chemical Cleaning Procedure REV. REV. 0 Storage: Keep Storage:  Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from strong acids.

Section 8 - Exposure Controls, Personal Protection

Engineering Controls: Facilities Controls: Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low. Exposure Limits  Limits 

Chemical Name  Name 

ACGIH   ACGIH

NIOSH   NIOSH

OSHA - Final PELs  PELs 

none listed

none listed

Tribasic sodium phosphate

none listed

dodecahydrate Trisodium phosphate, none listed

none listed

none listed

anhydrous

OSHA Vacated PELs: Tribasic PELs: Tribasic sodium phosphate dodecahydrate: No OSHA Vacated PELs are listed for this chemical. Trisodium phosphate, anhydrous: No OSHA Vacated PELs are listed for this chemical. Personal Protective Equipment  Equipment  Eyes: Wear Eyes:  Wear appropriate protective prot ective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear Skin:  Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear Clothing:  Wear appropriate protective clothing to prevent skin exposure. Respirators: A Respirators:  A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.

Section 9 - Physical and Chemical Properties

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Two(2) x 500MW Mong Duong 1 Thermal Power Plant  Chemical Cleaning Procedure REV. REV. 0

Physical State: Solid State: Solid Appearance: colorless Appearance:  colorless or white Odor: odorless Odor:  odorless pH: 11.9 pH:  11.9 @ 1% solution Vapor Pressure: Not Pressure: Not available. Vapor Density: Not Density: Not available. Evaporation Rate:Not Rate:Not available. Viscosity: Not available. Viscosity: Not Boiling Point: Not Point: Not available. Freezing/Melting Point:167 Point:167 deg F Decomposition Temperature:Not Temperature:Not available. Solubility: Soluble. Solubility:  Soluble. Specific Gravity/Density:1.62 Gravity/Density:1.62 @ 68 캟  Molecular Formula:Na3PO4.12H2O Formula:Na3PO4.12H2O

39

Molecular Weight:380.11 Weight:380.11

Section 10 - Stability and Reactivity

Chemical Stability: Stable Stability: Stable at room temperature in closed containers under normal storage and handling conditions. Conditions to Avoid: High Avoid: High temperatures, dust generation. Incompatibilities with Other Materials: Strong Materials:  Strong acids. Hazardous Decomposition Products: Oxides Products: Oxides of phosphorus, sodium oxide. Hazardous Polymerization: Has Polymerization: Has not been reported.

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Two(2) x 500MW Mong Duong 1 Thermal Power Plant  Chemical Cleaning Procedure REV. REV. 0

Section 11 - Toxicologica Toxicologicall Informa Information tion

RTECS#:   RTECS#: CAS# 10101-89-0: CAS#  10101-89-0: TC9575000 CAS# 7601-54-9: CAS#  7601-54-9: TC9490000 LD50/LC50:   LD50/LC50: CAS# 10101-89-0: Oral, rat: LD50 = 7400 mg/kg; .

CAS# 7601-54-9: .

Carcinogenicity:   Carcinogenicity: CAS# 10101-89-0: Not listed by ACGIH, IARC, NTP, or CA Prop 65. CAS# 7601-54-9: Not listed by ACGIH, IARC, NTP, or CA Prop 65.

Epidemiology: No Epidemiology:  No information found Teratogenicity: No Teratogenicity:  No information found Reproductive Effects: No Effects: No information found Mutagenicity: No Mutagenicity:  No information found Neurotoxicity: No Neurotoxicity:  No information found Other Studies:  Studies: 

Section 12 - Ecological Information

Ecotoxicity: No Ecotoxicity:  No data available. No information available. Environmental: Phosphates Environmental:  Phosphates promote the eutrophication of lakes and other bodies of water. Physical: No Physical:  No information available. Other: No Other:  No information available.

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Two(2) x 500MW Mong Duong 1 Thermal Power Plant  Chemical Cleaning Procedure REV. REV. 0

Section 13 - Disposal Considera Considerations tions

Chemical waste generators must determine whether a discarded chemical is classified as a hazardous waste. US EPA guidelines for the classification determination are listed in i n 40 CFR Parts 261.3. Additionally, waste generators must consult state and local hazardous waste regulations to ensure complete and accurate classification. RCRA P-Series: None P-Series: None listed. RCRA U-Series: None U-Series: None listed.

Section 14 - Transport Information

US DOT  DOT 

Canada TDG  TDG 

NOT REGULATED FOR DOMESTIC Shipping Name:  Name: 

No information available. TRANSPORT

Hazard Class:  Class:  UN Number:  Number:  Packing Group:  Group: 

Section 15 - Regulatory Information

US FEDERAL  TSCA   TSCA CAS# 10101-89-0 is not on the TSCA Inventory because it is a hydrate. It is considered to be listed if the CAS number for the anhydrous form is on the inventory (40CFR720.3(u)(2)). CAS# 7601-54-9 is listed on the TSCA inventory.

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Two(2) x 500MW Mong Duong 1 Thermal Power Plant  Chemical Cleaning Procedure REV. REV. 0 Health & Safety Reporting List  List  None of the chemicals are on the Health & Safety Reporting List. Chemical Test Rules  Rules  None of the chemicals in this product are under a Chemical Test Rule. Section 12b  12b  None of the chemicals are listed under TSCA Section 12b. TSCA Significant New Use Rule  Rule   None of the chemicals in this material have a SNUR under TSCA. CERCLA Hazardous Substances and corresponding RQs  RQs  CAS# 10101-89-0: 5000 lb final RQ (Listed under Sodium phosphate, tribasic); 2270 kg final RQ (Li

CAS# 7601-54-9: 5000 lb final RQ (Listed under Sodium phosphate,

tribasic); 2270 kg final RQ (Li SARA Section 302 Extremely Hazardous Substances  Substances   None of the chemicals in this product have a TPQ. SARA Codes  Codes 

CAS # 10101-89-0: immediate. CAS # 7601-54-9: immediate. Section 313  313 

No chemicals are reportable under Section 313.

Clean Air Act:  Act:  This material does not contain any hazardous air pollutants. pol lutants. This material does not contain any Class 1 Ozone depletors. This material does not contain any Class 2 Ozone depletors. Clean Water Act:  Act:  CAS# 10101-89-0 is listed as a Hazardous Substance under the CWA. CAS# 7601-54-9 is listed as a Hazardous Substance under the CWA. None of the chemicals in this product are listed as Priority Pollutants under th the e CWA. None of the chemicals in this product are listed as Toxic Pollutants under th the e CWA. OSHA:   OSHA: None of the chemicals in this product are considered highly hazardous by OSHA. STATE   STATE CAS# 10101-89-0 can be found on the following state right to know lists: California, New Jersey, Pennsylvania, Massachusetts. CAS# 7601-54-9 can be found on the following state right to know lists: California, New Jersey, Pennsylvania, Minnesota, Massachusetts.

California Prop 65  65 

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Two(2) x 500MW Mong Duong 1 Thermal Power Plant  Chemical Cleaning Procedure REV. REV. 0 California No Significant Risk Level: None of the chemicals in this product are listed.

European/International European/Internation al Regulations  European Labeling in Accordance with EC Directives  Directives  Hazard Symbols:  Symbols:  XI Risk Phrases:  Phrases:  R 36/37/38 Irritating to eyes, respiratory system and skin.

Safety Phrases:  Phrases:  S 26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S 37/39 Wear suitable gloves and eye/face protection.

WGK (Water Danger/Protection)  Danger/Protection)