DEMO UDS

QUALITY INTERNATIONAL Co. Ltd. HFZ

USER’S DESIGN SPECIFICATION

Document No.:J782-SP-2640-D-027

USER’S DESIGN SPECIFICATION For

DEETHANIZER RECTIFIER RECEIVER 2640-D-027 As per

ASME Sec VIII Div. 2 2013 Edition

Quality International Co.Ltd. FZC, HFZ Hamriyah, UAE

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QUALITY INTERNATIONAL Co. Ltd. HFZ

USER’S DESIGN SPECIFICATION

Document No.:J782-SP-2640-D-027

QUALITY INTERNATIONAL CO. LTD. FZC, HFZ

PROJECT NO.: J782

PROJECT NAME : ASME RECERTIFICATION

LOCATION: HAMRIYAH, SHARJAH

DEMONSTRATION ITEM NO.: 2640-D-027

ITEM NAME: DEETHANIZER RECTIFIER RECEIVER

In Compliance with ASME Section VIII, Division 2 Paragraph 2.2.2 (2013 Edition) 1

Item Number

2640-D-027

2

Service Of Unit

Deethanizer Rectifier Receiver

3

Reference Specification

J782-SP-2640-D-027

4

Reference Datasheet

J782-DS-2640-D-027

5

Position

Vertical

6

Size: a. Diameter (Shell)

3,300 mm

b. Length TL to TL

11,000 mm

7

Type of Heads

2:1 Semi Ellipsoidal

8

Type of Support

Skirt

9

Material: a. Shell, Head

SA 516 Gr. 65N

b. Skirt, Base Plate

Sa 516 Gr. 65N, SA 285 Gr.C

c. Flange

SA 350 LF2 Cl.1

d. Nozzles (pipe)

SA 333 Gr. 6

e. Nozzle (plate)

SA 516 Gr. 65N

f.

SA 350 LF2 Cl.1

Nozzle (Hubs)

g. Non Pressure component (Internal)

SA 516 Gr. 65N

h. Non Pressure Component (External)

SA 516 Gr. 65N

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QUALITY INTERNATIONAL Co. Ltd. HFZ

USER’S DESIGN SPECIFICATION

Document No.:J782-SP-2640-D-027

10

Design pressure

Kgf/ cm2

30

11

Design Temperature

O

120

12

Normal Operating Pressure

Kgf/ cm2

25.7

13

Normal Operating temperature

O

-10

14

Hydrostatic test Pressure

Kgf/ cm2

As per ASME VIII, Div. 2 Para 8.2.1a

15

Corrosion Allowance

mm

3.0

16

Specific Gravity of Content

Kg/m3

-

17

Minimum Design Metal Temperature (MDMT)

O

-45

18

Service Fluid

C

C

C

Feed

Wind Load

-Wind Load shall be in accordance withASCE 7-05 -For use with ASCE-7, the basic wind speed(3 second gust) at a standard height of 10m above ground shall be 160kmph. -Terrain Exposure”C”, topographic factor, Kzt = 1

20

Seismic Load

-All plant equipment and structures shall be designed for earthquake loads in accordance with IBC 2009. - Site Class Defenitions: Site class C -Mapped spectral acceleration for short periods: Ss= 0.355, Fa = 1.2 Mapped spectral acceleration for a 1 second period: S1 = 0.066, Fv=1.7

21

Design life Period

5 years

22

Fatigue Analysis Not required per rues of para 5.5.2 of ASME Sec VIII Div.2 and ASME code case 2605

No Cyclic Service (Refer Appendix 6)

23

Insulation:

Not Required

24

Service Defenition

No

19

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QUALITY INTERNATIONAL Co. Ltd. HFZ

USER’S DESIGN SPECIFICATION

Document No.:J782-SP-2640-D-027

This attachment gives only some outstanding requirements in project specifications. It does not relieve the responsibility from vendors to review all relevant project specifications and to apply requirements in them.

2

Dimensions [ mm ] 2

Stress [ N/m ]

Pressure [ Kg/cm g ] 3

Volume [ m ] 2

Temperature [ °C ]

Area [ m ]

-For all details of the required Units of Measurement refer to the project specification for the Basic Engineering Design Data: 5636-AMD-PE-012 & 5636-AMD-PE-012-Att001.

1. DESIGN CODE The latest edition of codes or standards at the time of proposal shall apply. (1) Design, Material, Fabrication, Inspection, and Test -ASME Section VIII Div.1 or ASME Section VIII Div.2 (2) Material : ASME / ASTM Material (3) Flange : ANSI B16.5 Steel Pipe Flanges and Fittings (up to and including 24 in. NPS) ANSI B16.47 Series A (NPS over 24 in)

2. WIND LOAD (1) Wind loads shall be in accordance with ASCE 7-05 (2) Basic wind speed of a 3 second gust at standard height of 10 m above ground shall be 160 km/h (3) Wind loads are based on terrain Exposure “C” and topographic factor, Kzt = 1.0 (4) Importance factors, I = 1.0 for all equipments (5) Wind load on vessels shall be computed on the basis of the normal wind load calculated on the projected area plus by the factors detailed in the table below to allow for the effect of insulation, fireproofing and attachments such as piping, platforms, ladders etc. For computation of wind loads on round shaped vessels use Cf = 0.8 unless higher values are specified in ASCE 7. Effective diameter “D” of the vessel shall be increased by the following factors: -From 0.5m up to 1.0m effective diameter = 1.6 x D -From 1.01m up to 1.5 effective diameter = 1.37 x D -From 1.51m up to 2.0m effective diameter = 1.28 x D -From 2.01m up to 2.5m effective diameter = 1.2 x D -> than 2.5m effective diameter = 1.18 x D -Spheres of any size = 1.1 x D -4-

QUALITY INTERNATIONAL Co. Ltd. HFZ

USER’S DESIGN SPECIFICATION

Document No.:J782-SP-2640-D-027

(6) Deflection of the top of a column due to static wind load shall be limited to 1/200 of the vessel height including skirt. For vessels with height to diameter ratio more than 10, vortex shedding shall be checked. Vessels subject to vortex oscillation shall have deflection limited to 1/400 and induced stress in shell, skirt, bolts and foundation limited to an acceptable level.

3. EARTHQUAKE LOAD (1) All plant equipment and structures shall be designed for earthquake loads in accordance with IBC 2009/ASCE-7-05. Seismic forces calculated in accordance with IBC 2009 represent ultimate limit force loading. The seismic design parameters given below are supplied by COMPANY based on M/S Fugro study report carried out for RRE project. (2) Earthquake loads shall be defined as the horizontal and vertical forces equivalent in their design effect to the loads induced by ground motion during an earthquake. (3) All plant equipment and structures shall be designed for earthquake loads in accordance with the UBC and the following factors: a) Site Class Definitions : Site Class C Ref Table 1613.5.2 & provided by COMPANY b) Mapped spectral acceleration for short periods Ss = 0.355 Ref. Provided by COMPANY Fa = 1.2 Ref. Table 1613.5.3(1) SDS = 2/3 x Ss x Fa = 0.284 Equation 16-39 c) Mapped spectral acceleration for a 1 second period S1 = 0.066 Ref. Provided by COMPANY Fv = 1.7 Ref. Table 1613.5.3(2) SD1 = 2/3 x S1 x Fv = 0.075 Equation 16-40 d) Occupancy Category: II -for Ordinary Structures. III -for Substations, Satellite Instrument Shelters, Control Buildings, Fire Station Buildings and Firewater Pump Shelters. e) Importance Factors : I = 1.0 for Ordinary structures I = 1.25 for structures containing toxic or explosive materials, including Marine Structures, Substations, Satellite Instrument Shelters, Control Buildings, Fire Station Buildings and Firewater Pump Shelters. f) Response Modification Factors: For saddle, skirt, legs and lugs supported, R= 3 g) For ASD design combinations a load factor of 0.7 should be applied to the ultimate seismic load. The seismic factors and site class are as defined above Section 7.7, a),b) and c). -5-

QUALITY INTERNATIONAL Co. Ltd. HFZ

USER’S DESIGN SPECIFICATION

Document No.:J782-SP-2640-D-027

(4) Seismic design for storage tanks at grade shall be in accordance with API 650, Welded Steel Tanks for Oil Storage with above seismic factor of Sec. 3-(3)

precedence is Data Sheet.

4 ENGINEERING DESIGN 4.1Compliance with ASME Code requirements, including certification, is the responsibility of the VENDOR. Code stamping of each pressure vessel shall be performed unless specifically exempted by COMPANY. All ASME code stamped vessels shall be registered with the National Board. 4.2 Calculations Horizontal vessels support saddles. The stresses in shell shall be determined in accordance with PD 5500 or the Zick method. Vertical skirt supported vessels operating above 400°C a detailed analysis of the head to skirt junction is required. 5 PRODUCTS 5.1 DESIGN REQUIREMENTS 5.1.1 Design Criteria 5.1.1.1The service duty of the vessel: Hydrocarbon, Hydrogen, Sour, Wet H2S, Lethal, Cyclic or other shall be specified on the Project data sheets and drawings. 5.1.1.2The minimum permitted size of flanged nozzles is 2” N.B and shall be a minimum of Class 300 unless otherwise stated. All carbon steel and low alloy nozzles 2” N.B and below shall be long forged weld neck type. 5.1.1.3All vertical vessels shall be designed for a future field hydrostatic test in the erected position and in the corroded condition. 5.1.1.4When specified on the vessel data sheet, fatigue analysis shall be performed in accordance with ASME Section VIII, Division 2. The analysis shall consider all mechanical and thermal cycles anticipated in the design life of the vessel. Basis for fatigue analysis shall be as presented in ASME Section VIII, Division 2. In the fatigue analysis, peak stress determination shall be performed for all vessel discontinuity areas, including all nozzle/shell and nozzle/head intersections, support attachments, head/shell intersection, weld contours, fillet welds and internal attachments. -6-

QUALITY INTERNATIONAL Co. Ltd. HFZ

USER’S DESIGN SPECIFICATION

Document No.:J782-SP-2640-D-027

5.1.2 Minimum Thickness 5.1.2.1 The minimum thickness of shells, heads and skirt supports for carbon and low alloy steel, excluding corrosion allowance, shall be 6mm for vessels up to 2000mm inside diameter and 8mm for larger vessels. 5.1.2.2The minimum thickness of shell and heads for high alloy vessels shall be 6mm. 5.1.3 Corrosion Allowance 5.1.3.1The specified corrosion allowance shall be added to internal surfaces of pressure parts and exposed surfaces of non-removable internals. 5.1.3.2One half of the specified corrosion allowance shall be applied to each exposed surface of carbon and low alloy steel removable internals. 6 MATERIALS 6.1.1 General 6.1.1.1 Materials of construction shall be as specified (including grade, class, etc., when shown) in the Project data sheets and drawings and shall comply with the design code 6.1.1.2Special requirements for materials and testing will be specified in the parent material requisition, vessel data sheet, this specification.. 6.1.1.3All carbon steel and low-alloy plates of thickness greater than 50 mm shall be ultrasonically examined in accordance with ASME SA-578 (with Supplementary Requirements S1 & S2) and SA-577, as applicable. 6.2.1 Product Forms, Composition and Marking 6.2.1.1All flanges in severe service,shall be supplied in the normalised condition. 6.2.1.2Composition for Carbon and Carbon Manganese Steel for Vessels components in non sour service: The carbon content shall be 0.23% maximum and the carbon equivalent (C.E.) shall be 0.43% maximum, where 6.2.1.3 Impact Tests on Base Materials and Welds 6.2.1.4Impact test requirement for all carbon and low-alloy steel materials and welds in Division 1 or Division 2 construction shall be in accordance with the requirements of the design code, the requirements of -7-

QUALITY INTERNATIONAL Co. Ltd. HFZ

USER’S DESIGN SPECIFICATION

Document No.:J782-SP-2640-D-027

Appendix 3 of this specification, and the following unless specified otherwise on the vessel data sheet. 6.2.1.5Charpy v-notch impact testing shall be conducted in accordance with ASME VIII Div 1 or 2. The required impact energy shall be as defined in ASME VIII Div 1 and 2 at the minimum design metal temperature. The value so defined shall be the minimum average value from a set of three tests, with no single value less than 75 % of the specified minimum average, irrespective of the test specimen size. A reduction of minimum design metal temperature without impact testing in accordance with ASME VIII Div 1, paragraph UCS-66 (b) and Div 2, Section 3.11 shall not be permitted. 7.1 FABRICATION 7.1.1 General For equipment in severe service, as defined in Project Specification 5636-AMD-MW-004, vessel heads fabricated from carbon, carbon manganese and low alloy steels shall be heat treated after final forming operation, irrespective of forming temperature or head thickness. The heat treatment shall be carried out as a separate operation and shall be recorded and documented by a temperature recording chart. The heat treatment shall be the same as used in the manufacture of the steel. For equipment outside the services noted above cold formed vessel shells and heads shall be supplied in accordance with the requirements of ASME VIII Div.1 UCS-79. All plates made from ferrite steels (with the exception of 3.5%, 5% and 9% nickel steel) which have been hot-formed or which have been cold-formed by dishing, flanging or rolling to an internal radius less than 10 times the plate thickness (no more than 5% deformation) shall be given a normalising heat treatment. For Cr-Mo steel, normalising and tempering as original plate shall be performed in accordance with Specification 5636-AMD-MW-008. 7.1.2 Nozzle Connections and Manways 7.1.2.1Nozzle Reinforcement: For carbon steel, austenitic steel, ferritic steel and high alloy steel vessels designed to ASME Section VIII Division 2, -Saddle type integral reinforcement as shown in Table 4.2.13 Details 1 to 5 is required for nozzles above 2” N.B for all services when wall thickness exceeds 50mm. 2” N.B nozzles shall be set-through long forged weld neck type. -Integral set-through reinforcement shall be used for wall thickness 50mm and below. c. For low alloy vessels (reactors), saddle type reinforcement shall be used for all nozzles as in Figs UW-16.1 (f1), (f2), (f3) or (f4) of ASME Section VIII Division 1 or Table 4.2.13 Details 1 to 5 of Division 2. 7.1.2.2All nozzles on pressure vessels shall be flanged. Flanges shall be weld neck or long weld neck type with raised-face. Slip-on type flanges are not permitted except in cases of internal flanges. -8-

QUALITY INTERNATIONAL Co. Ltd. HFZ

USER’S DESIGN SPECIFICATION

Document No.:J782-SP-2640-D-027

7.1.2.3All flanges through 24” N.B in size shall be per ANSI B 16.5. Flange sizes above 24” N.B, shall be per ASME 16.47 Series A unless otherwise noted. For flanges outside the scope of these standards, special design shall be in accordance with the ASME Code, Section VIII, Division 1 or 2, as applicable. Nozzle sizes of 1 1/4 inch (32 mm), 2 1/2 inch (65 mm), 3 1/2 inch (89 mm), and 5 inch (125 mm) and other non standard sizes shall not be used. ANSI Class 400 flanges shall not be used. Refer also to clause 11.1.3.4. 7.1.2.4Nozzle necks may be of seamless pipe, rolled plate, or integrally forged with the flanged connection. Rolled plate nozzle necks and all plate reinforcing pads shall be the same grade of material as specified for the vessel shell or head to which they are attached. Reinforcing pad thickness shall not exceed 40 mm or the as built shell thickness, whichever is the lesser. The fillet of the attachment weld shall blend smoothly with both vessel and nozzle wall without any notch, sharp corner or undercut. 7.1.2.5All nozzle flanges, blind flanges, specialist flanges and body/girth flanges are to be forged. Flanges made from plate are not acceptable. 7.1.2.6Hydraulic tensioning shall be used for bolts above 38 mm in diameter, the stud bolt lengths should at least be 2 diameters through the retaining nut. 8.1 Supports and External Attachments 8.1.1 Skirts and other attachment welds shall have complete fusion for the full length of the weld and shall be free from undercut, overlay, or abrupt ridges or valleys. Welds on the bottom side of base rings shall be ground flush. When the metallurgy of the vessel shell has been defined for temperature purposes (high or low temperature), the upper part of the skirt for a minimum length of 1000 mm shall be of similar material of vessel proper. The mean diameter of the bottom course and the cylindrical skirt shall coincide. 8.1.2 Internals Internal support rings shall not be less than 6mm thick excluding corrosion allowance. They shall be continuously strength welded on the top side and seal welded on the underside unless stated otherwise. Refer also to clause 11.3.5.7. 9.1 Post Weld Heat Treatment (PWHT)

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QUALITY INTERNATIONAL Co. Ltd. HFZ

USER’S DESIGN SPECIFICATION

Document No.:J782-SP-2640-D-027

9.1.1Vessels shall be post weld heated treated as follows: Where required by the ASME code. Where specified on vessel data sheet for process reasons (e.g. Hydrogen, Sour Service or Wet H2S Service) or as required by project specifications. 10.0 PAINTING AND COATING For all vessels requiring internal coating will have the requirements detailed on the Project data sheets and drawings and shall comply with the requirements of the project specification. APPENDIX 1 -EXTERNALLY APPLIED NOZZLE LOADS 1. Each nozzle, including those designated “spare” but with the exception of instrument connections, manways and handholes shall be designed to withstand the forces and moments specified herein. The indicated loads are to be considered to act at the shell/head to nozzle intersection and to be true normal and tangential to the shell at that point. The effect on the shell/head shall be analysed per WRC107/297 or PD 5500 -Annex „G‟ or FEA. Where a WRC107/297 analysis is carried out, a pressure stress intensity factor determined in accordance with PD 5500 is to be included. Alternative pressure stress intensity factors may only be used with the approval in writing by the CONTRACTOR. APPENDIX 2 -VESSELS WITH SHELL THICKNESS GREATER THAN 50MM 1.1 VENDOR shall furnish mill test certificates with complete chemical analysis and room temperature mechanical properties for all Code materials used. VENDOR shall comply with the requirements of Code paragraph UG-84 of ASME VIII Division 1 or Section 3.11 of ASME VIII Division 2 as applicable in all construction. Except for the exemptions allowed by ASME VIII Division 1 paragraph UCS-85 or ASME VIII Division 2 Section 3.10, all test specimens shall be taken from sample coupons, which have been subjected to a simulated heat treatment cycle. The simulated heat treatment cycle shall be approved by the CONTRACTOR. Simulated heat treatment shall include all heat treatments applied at the material manufacturer's mill and any applied by the VENDOR during fabrication. Time equivalent to all planned PWHT cycles in the shop, plus one cycle for repair, plus one cycle for later field modification (minimum of three full PWHT cycles) shall be included in the total simulated PWHT time. Heat treatment in this context shall be considered as any heating operation, which results in the material, being tempered or in the residual stresses being relieved, i.e., the material properties are changed. 1.4 For Division 2 vessels supported by skirts, where specified, the skirt to head joint shall utilize a weld build-up on the head or a forging similar to that shown in Figure 4.2.4 (e) of Division 2, such that the joint can be fully radiographed. - 10 -

QUALITY INTERNATIONAL Co. Ltd. HFZ

USER’S DESIGN SPECIFICATION

Document No.:J782-SP-2640-D-027

1.5 RADIOGRAPHY Attachment welds of manways and all nozzles greater than 2” N.B constructed to Division 1 with shells greater than 75 mm in thickness and in all vessels constructed to Division 2. APPENDIX 3 -IMPACT TESTED STEELS 1.0 GENERAL This appendix applies to the requirements of pressure vessels and vessel parts designed for service when the operating temperature is +15°C or below and the materials are affected by fracture toughness considerations. The appendix shall be read in conjunction with the main body of this specification.

APPENDIX 4 -LOAD DESIGN CASES AND LOAD COMBINATIONS 1 Lift Design Factor Vessels shall be checked using an impact factor of 2.0 during lifting, i.e. the weight used in calculation of trunnion and lug sizes shall be twice the weight lifted. W design= Vliftx 2.0 2 ERECTED CONDITION WITH ATTACHMENTS Dressed vessel (effective diameter refer to Table of loading cases and load combinations “wind and earthquake condition”). 75 percent of the total wind loads (including scaffolding) 6.2 Dressed Vessel This is a vessel with all appurtenances in place ready for operational use, but not containing process fluids. Typical Appurtenances include: Internals Insulation Fireproofing Platforms and Ladders External piping APPENDIX 5 - ADDED MATERIALS RESTRICTIONS No SA 36 or SA 283 steels shall be used for equipment components exposed to services included within the scope of this Attachment. SA 285 Grade C, SA 299, SA 455 and SA 515 Grade 65 shall be limited to 12.5 mm thickness for equipment components exposed to services included within the scope of this Appendix. SA 516 Grade 60 or 65 shall be used wherever practical for pressure-containing components.

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QUALITY INTERNATIONAL Co. Ltd. HFZ

USER’S DESIGN SPECIFICATION

Document No.:J782-SP-2640-D-027

MATERIALS 5.1 GENERAL Unless specified otherwise in other project specifications, a minimum of EN 10204 3.1 certification is required for all welding consumables. All such certification shall be original or red stamped verified copies by CONTRACTOR approved inspectors. Chemical composition and carbon equivalent requirements shall be based on product analysis of the material. All materials shall be made in a basic oxygen or electric arc furnace, and shall be killed. All materials, except castings and materials in amine service that do not meet the wet H2S or sour service definitions, shall be supplied in the normalized or normalized and tempered condition. Normalizing shall be carried out as a separate heat treatment. 5.2 PLATE Plate shall be SA-516, Grades 60 or 65. Grade 70 shall not be used. Substitution of Grade 60 or 65 by Grade 70 shall not be permitted. Carbon content shall be 0.23% maximum. The carbon equivalent (CE) shall be 0.43 maximum. The following formula shall be used to calculate the CE:

SA-20 Supplementary Requirements S19 and S21 shall apply. SA-516, Grade 70 may be used to the following conditions, additional to those specified above for grades 60 and 65. Steel maker to provide wedability data for SA-516, Grade 70 used on previous successful projects Heat treatment condition: Normalised, regardless of thickness Thickness shall not exceed 25mm Carbon content shall be 0.23% maximum. The VENDOR shall purchase material with simulated postweldheat treatment in accordance SA-20 Supplementary Requirement S3. All plates shall meet ASTM A770-S3 with a minimum area reduction of 35 percent. 5.3 PIPE Only SA-333 Grade 6 shall be used. Other materials, especially for large diameter pipe (SA-671 CC65 Class 32) may be used, if prior approval from CONTRACTOR/ COMPANY is obtained. For pipe made from plate, the requirements of Paragraph 8.2 shall be met, along with Appendix 1 if the service is designated as “HSS.” Carbon content shall be 0.23% maximum. The carbon equivalent (CE) shall be 0.43 maximum. - 12 -

QUALITY INTERNATIONAL Co. Ltd. HFZ

USER’S DESIGN SPECIFICATION

Document No.:J782-SP-2640-D-027

. 5.4 FORGINGS Forgings shall be SA-350 LF2. Carbon content shall be 0.25% maximum. The carbon equivalent (CE) shall be 0.43 maximum. For SA-105 material, Supplementary Requirements S3.1 (Hardness) and S8 (Approval of Repair Welding) shall apply. For SA-350 material, Supplementary Requirement S10 (Approval of Repair Welding) shall apply.

5.5 FITTINGS Fittings shall be SA-420 Grade WPL6. For fittings made from plate, the requirements of Paragraph 8.2 shall be met, along with Appendix 1 if the service is designated as “HSS”. Base materials shall be in accordance with the above specifications for plate (Paragraph 8.2), forging (Paragraph 8.4) or pipe (Paragraph 8.3), as applicable. Carbon content shall be 0.23% maximum. For SA-420 material, Supplementary Requirement S7 (Repair Welding) shall apply.

APPENDIX 6 -FATIGUE ANALYSIS SCREENING FATIGUE ANALYSIS SCREENING AS PER SEC. 5.5.2.3

N FP - All expected (design) number of full range pressure cycles, including start up & shut down. N PO - Expected number of operating pressure cycles, in which the range of pressure variation exceeds 20% of design pressure and 15% of design pressure for non integral type

N TE - Effective number of changes in metal temperature between any two adjacent points N T - Number of temperature cycles for components involving weld between materials having Different coeffecients of thermal expansion The vessel is designed for a life period of 5 years - 13 -

QUALITY INTERNATIONAL Co. Ltd. HFZ

USER’S DESIGN SPECIFICATION

Document No.:J782-SP-2640-D-027

Since the material used for the vessel have the Minimum Tensile strength value less than or equal to 80 ksi (552 Mpa), the Fatigue Analysis screening is carried out as per Method A of part 5.5.2.3

1. Design No. of full range Cycle: (a) Number of start up and shut down for maintenance - 6 Nos./ Year  Number of start up and shut down for maintenance for complete life of the vessel - 30 Nos.

(b) Maximum number of full range operating cycle per year  Number of full range operating cycles for complete life of the vessel

- 104 Nos./ Year - 520 Nos.

 N FP - All expected (design) number of full range pressure cycles, including start up & shut down. - (a) + (b) - 550 Nos. 2. Number of operating pressure cycles: The vessel is of integral type of construction. Therefore the operating pressure cycles, is the one in which the range of pressure variation exceeds 20% of design pressure. Given Design Pressure

- 30kg/cm2

If the pressure variation exceeds 20% Design Pressure (6kg/cm2), it is considered as one cycle. For the vessel the pressure relief valve is set at 30kg/cm2, hence the operating pressure variation will not exceed 20% of Design Pressure. The no. of cycles per year in which the variation in operating pressure exceeds 20% is given by 40 nos./ year

 Number of operating pressure cycles for complete life of the vessel, in which the range of pressure variation exceeds 20% of design pressure - 200 Nos.

 N PO

- 200 Nos.

3. Number of change in material temperature: The temperature limit between any two adjacent points are limited upto 5OC. During the start up and shut down the temperature will vary between atmospheric temperature of 48 deg C to Operating Temperature of 150 deg C. So the temperature variation is is given as 102 deg C. Number of start up and shut down for maintenance is given Now as per table 5.8 of Sec VIII Div 2, the temperature factor is given as 8 - 14 -

- 6 Nos./ Year

QUALITY INTERNATIONAL Co. Ltd. HFZ

 N TE

USER’S DESIGN SPECIFICATION

Document No.:J782-SP-2640-D-027

- 48 Nos

4. Number of temperature cycles with different Thermal Expansion Coeffecients: The complete vessel is manufactured by using P No.1, Group No.1 material. The welding is performed by using the similar material. Since the P No. and Group No. remains same throughout the vessel, the coefficient of thermal expansion will be constant.

 N T 

- 0 Nos

Now sum of all the above No. of cycles = N FP  N OP  N TE  N T = 768 Nos. As per table 5.9 for integral construction, for condition for Fatigue Analysis requirement is,

N FP  N OP  N TE  N T  1000, then fatigue analysis is not required. For this particular instance, N FP  N OP  N TE  N T =720  1000, Hence the above conditions are satisfied, and Fatigue Analysis is not required as per Part 5.5.2 Method A

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