H-331 E WPS

< Security Level 2 >

Sheet 1 of 31

ENGINEERING SPECIFICATION

MINIMUM REQUIREMENTS FOR WELDING

PROCEDURE SPECIFICATION

FOR

CIVIL WORKS

FOR

HINDUSTAN PETROLEUM CORPORATION LTD.

VISAKH REFINERY

DHT PROJECT

TEIL JOB NO. : 6261

DOCUMENT NO. : H – 331

A 29.12.2008 For Bid Enquiry UCM PRK SSV

Rev. no.

Issue Date Description Prepared by Checked by Approved by

TOYO ENGINEERING INDIA LIMITED MUMBAI INDIA


Sheet 2 of 31

Revision History

Rev. Date Description

A 29.12.2008 For Bid Enquiry


HPCL, Visakh

MINIMUM REQUIREMENTS FOR

WELDING PROCEDURE

SPECIFICATION

ISSUED : 29.12.2008 JOB NO. : 6261

TOYO ENGINEERING INDIA LTD.

DOC.No. H – 331 DHT PROJECT Sheet 3 of 31

CONTENTS

Section Topic Page No.

1 GENERAL

1.1 Scope 4

1.2 Conflicts 4

1.3 Codes and Standards 4

1.4 Related Engineering Specifications 4

2 WELDING PROCEDURE SPECIFICATIONS (WPS)

2.1 Applicable Codes and Standards 5

2.2 Responsible Organizations 5

2.3 Preparation of WPS and PQR 6

2.4 Minimum Requirements for WPS 6

2.5 Procedure Qualification Test Requirements 7

3 MINIMUM REQUIREMENTS FOR WELDING PROCEDURE

SPECIFICATION

3.1 Welding Processes 7

3.2 Base Metals 8

3.3 Electrodes and Welding Rods 9

3.4 Dissimilar Joint 11

3.5 Low Temperature Service 13

3.6 Preheat and Interpass Temperature 13

3.7 Post weld Heat Treatment (PWHT) 14

ATTACHMENT – 1 16

Table-1 List of Items for Welding Procedure Qualification (QW-451.1) 17

Table-2 Applicable Base Material Specification 18

Table-3 Selection of Electrodes and Welding Rods 20

ATTACHMENT – 2 23

Attached Figure of Joint Sketch

ATTACHMENT – 3 24

Appendix – 1 Welding Specification for Pressure Piping 27


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1. GENERAL

1.1 Scope

This specification covers minimum requirements for welding procedure specification

(WPS) which shall be established for the piping construction work.

1.2 Conflicts

Any conflict between the requirements of this specification and the provisions of any

applicable codes, standards and Customer’s requirements shall be referred to PMC

for resolution prior to the work.

1.3 Codes and Standards

The following codes and standards shall be referred to the latest edition unless

otherwise specified:

ASME Sec.II Part C Specifications for Welding Rods, Electrodes, and Filler

Metals.

ASME Sec. IX Qualification Standard for Welding and Brazing

Procedures, Welders, Brazers, and Welding and Brazing

Operators.

ANSI/ ASME B31.1 Power Piping

ANSI/ ASME B31.3 Chemical Plant and Petroleum Refinery Piping

AWS D1.1 Structural Welding Code - Steel.

1.4 Related Engineering Specification

H-103 Piping Materials or Enclosures

H-109E Piping Support

H-301E Piping Construction Works

H-321E Welders Qualification Test


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WELDING PROCEDURE

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2. WELDING PROCEDURE SPECIFICATIONS (WPS)

2.1 Applicable Codes and Standards

This specification shall be used in conjunction with the piping code ANSI/ASME

B31.3.

For the piping support and shoe welding except the joints to pressure containing

parts, prequalified welding procedures only for SMAW meeting AWS D1.1 may be

applied for P-No.1 base metals without procedure qualification tests and WPS shall

be submitted to PMC for approval.

When the non-pressure containing or load bearing parts are joined to pressure

containing piping, this specification shall be applied.

2.2 Responsible Organizations

The construction LSTK contractor shall list the parameters applicable to welding that

he performs in construction of weldments build in accordance with this specification.

These parameters shall be listed in documents known as a Welding Procedure

Specification (WPS). Each construction LSTK contractor shall qualify WPS by

welding test specimens, and recording the welding data and test results in

documents known as Procedure Qualification Records (PQR).

The welders or welding operators used to produce weldments to be tested for

qualification of procedures shall be under the full supervision and control of the

LSTK contractor during the production of these test weldments. It is not permissible

for the construction LSTK contractor to have the welding of test weldments

performed by another organization. This specification recognizes a construction

LSTK contractor as the organization, which has the responsible operation control of

the production of the weldments to be made in accordance with the requirements of

this specification. If in an organization effective operational control of welding

procedure qualification for two or more companies of different names exits, the

company involved shall describe in their Quality Control System/ Quality Assurance


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Program the operational control of procedure qualifications. In this case, separate

welding procedure qualifications are not required, provided all other requirements of

this specification are met.

Prior to production welding, the corresponding WPS and supporting PQR shall be

submitted to PMC for approval.

2.3 Preparation of WPS and PQR

2.3.1 Applicable WPS for the specific job shall be selected and prepared in accordance

with “ASME B-31.3 and ASME SECTION IX“, Engineering Specification H-103 and

H-301. WPS shall be identified by a unique number and shall contain complete data

including all the Essential, Supplementary Essential and Non Essential Variables

with maximum and minimum values qualified.

2.3.2 PQR to support related for the specific job shall be prepared in accordance with

Attached Table 1 “List of Items for Welding Procedure Qualification”. All test results

to be recorded into PQR shall be from specimens representative of the final

condition including all heat treatments of the weldment.

2.3.3 Joint designs referred to in each WPS shall be referred to Attached Figure “Joint

Sketch”.

2.3.4 The WPS and PQR shall be recorded and documented in the following forms:

APPENDIX -2 WELDING PROCEDURE SPECIFICATION (1/2 and 2/2).

APPENDIX -3 PROCEDURE QUALIFICATION RECORDS (1/3, 2/3 and 3/3).

2.4 Minimum Requirements for WPS

This specification and APPENDIX- 1 “WELDING SPECIFICATION FOR

PRESSURE PIPING” shall give the minimum requirements and guidelines for the

establishment of WPS and supporting PQR for the most used manual welding

processes, Gas Tungsten Arc Welding (GTAW), Shielded Metal Arc Welding

(SMAW) process or a combination for the piping or a combination for the piping

systems based upon the piping code ANSI/ ASME B31.3 and B31.3.


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Any deviation from Minimum Requirements for WPS and related requirements on

this specification, including the application of other welding process than GTAW or

SMAW shall be informed to PMC for approval.

2.5 Procedure Qualification Test Requirements

2.5.1 Impact Test

Impact test for procedure qualification test shall be performed in accordance with

Table 323.2.2 REQUIREMENTS FOR LOW TEMPERATURE TOUGHNESS TESTS

FOR METALS in ANSI/ ASME B31.3.

The test temperature of impact tests shall not be higher than the design minimum

temperature. If the sub-size specimens are used, a suitable reduction of

temperature must be done. (See Par. 323.3.4 Test Temperatures in ANSI/ ASME

B31.3).

2.5.2 Hardness Test

The welding procedure qualification test shall include hardness test when required

by the applicable codes, standards, or specifications for such process designs as

wet hydrogen sulfide, amine etc.

3. MINIMUM REQUIREMENTS FOR WELDING PROCEDURE SPECIFICATION

3.1 Welding Processes

3.1.1 General

(1) Welds shall be made by gas tungsten are welding (GTAW), shielded metal

are welding (SMAW) process or a combination thereof. Any other welding

process requires PMC approval.

(2) The applications of backing rings and consumable inserts are prohibited.

(3) All passes shall be uphill unless specifically approved by PMC.

(4) Argon gas with purity of not less than 99.995% shall be used as shielding

gas.


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(5) Argon gas backing with purity of not less than 99.995% shall be performed for

P-No.9B metals, 5Cr-1/ 2 Mo and higher low alloy metals, stainless steels,

and nonferrous metals.

3.1.2 Gas Tungsten Arc Welding (GTAW)

(1) GTAW process shall be applied to root pass welding for all groove joints

except for specified in Par. 3.3.1.

(2) Gas composition and flow rate of the shielding gas and backing gas shall be

recorded in the PQR and specified in the WPS, where applicable.

3.1.3 Shielded Metal Arc Welding (SMAW)

(1) AWS classification E6010 may be used for root pass and filler passes of

carbon steel, except Al-killed carbon steel, provided all of the following

conditions are met:

- nominal pipe size of 2.1/2 inches and over.

- the specified minimum strength of less than 70 ksi (483 Mpa).

(2) In all cases, AWS classification E6012/ E6013 shall not be used.

(3) All the SMAW electrodes for carbon and low alloy steels shall be low

hydrogen types except E6010/E6011.

3.2 Base Metals

3.2.1 P-Numbers 1, 4, 5A, 8 are covered in this specification, and examples of base

metals are listed in Attached Table 2. Other metals shall be qualified in accordance

with QW-424.1 in ASME Sec.IX.

3.2.2 Where the AWS D1.1 is applied for piping support and / or shoe welding, the

specification or designation of base metals shall meet those specified in H-109

“Piping Support”.


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3.3 Electrodes and Welding Rods

3.3.1 Electrodes and welding rods shall be selected from Attached Table 3 “Selection of

Electrodes and Welding Rods”.

(1) Attached Tables 3 shows ASME specifications and AWS Classifications of

the applicable electrodes and welding rods.

(2) The manufacturers of electrodes and welding rods shall be chosen by the

construction LSTK contractor in his responsibility and approved by PMC.

(3) Prior to using Non-listed electrodes and welding rods, a written proposal

accompanied by physical and mechanical properties, and chemical analysis

shall be submitted to PMC for approval.

(4) Electrodes and welding rods shall be specified and identified in WPS and

PQR by ASME specification and AWS classification. Brand name of

electrodes and welding rods shall also be specified in WPS.

(5) When non pressure containing parts are welded to pressure containing

piping, the chemical and mechanical properties of deposited weld metal shall

be met the pressure containing base metal.

3.3.2 All electrodes and welding rods shall be used within the limits recommended by

manufacturers. Batch test certificates of electrodes and welding rods shall be

obtained and verified by TEIL prior to commencement of welding work.

3.3.3 When “H Grade” is specified for type 304, 316, 321 and 347 stainless steels, the

filler metal shall have 0.04% of carbon content or more.

3.3.4 WPS shall be re-qualified whenever:

(1) A filler metal in “G” classification is changed to any other manufacturer or

manufacturer’s designation.


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(2) The chemical composition of the weld deposit is changed from A-No. 1 to A-

No.2 and vice versa.

3.3.5 Carbon Steel

(1) For GTAW, the filler metals shall meet the chemical and mechanical

requirements of SFA5.18 classification ER70S-3, ER70S-6, TGS-50 (ER70S-

G: Kobe Steel Ltd) is acceptable for using.

(2) For SMAW, the electrodes designated AWS classification E7016 or E7018

shall be used.

3.3.6 Al-killed Carbon Steel

(1) For GTAW, the certificates of filler metals shall include impact test which have

been conducted at - 460C or minimum design temperature and the results

shall conform to the absorbed energy requirement.

(2) For SMAW, the electrodes designated AWS classification E7016-1 or E7018-

1 shall be used.

It is acceptable to use a trade designations of LB-52NS (SFA 5.5 E7016-

G:Kobe Steel, Ltd.) NB-1 SFA 5.5 E8016-G: Kobe Steel Ltd) provided that

the certificates of filler metals shall include impact test which have been

conducted at -460C or minimum design temperature and the results conform

to the absorbed energy requirement.

(3) For sour service application (NACE MR0175), nickel content in the filler metal

shall not exceed 1.0%. NB-1 shall not be used for sour service because of

exceeding 1.0% of Ni content.

3.3.7 3.5 Ni steel

(1) The certificates of filler metals shall include impact test which have been




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(2) For GTAW, the welding rods designated AWS classification ER80S-Ni3 shall

be used.

The trade designation of TGS-3N (Kobe Steel, Ltd) can be used provided that

the certificates of filler metals include impact test which have been conducted

at -1010C or minimum design temperature and the results conform to the

absorbed energy requirement.

(3) For SMAW the electrodes designated AWS classification E7016-C2L or

E7018-C2L shall be used

The trade designation of NB-3N (Kobe Steel Ltd) or N-16 (Nippon Steel

Welding Products & Engineering Co. Ltd) for SMAW can be used provided

that the certificates of filler metals include impact test which have been



(4) NB-3N shall be used where the design temperature is -600C or higher in case

of as-welded condition. If the design temperature falls within the range from -

600C to -101

0C, PWHT is required regardless of base metal thickness.

3.3.8 C-1/2Mo

ERXXS-G is specified for GTAW, the deposited weld metal shall have the

same chemical composition and mechanical properties as the base metal.

3.4 Dissimilar Joint

3.4.1 For dissimilar joint made of ferritic steel and austenitic stainless steel at the design

temperature above 4500C, nickel - chromium -iron filler metal (Inconel-type) shall be

used in order to minimize the carbon migration and thermal fracture during service.

3.4.2 Inconel - type welding rods and electrodes shall not be used, where the joints are

exposed to a sulfidation environment at the design temperature above 5370C.


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3.4.3 For dissimilar joint which includes P-No.8 metal, preheat, interpass and postweld

heat treatment conditions shall be confirmed from PMC.

3.4.4 The following guidance for special DISIMILAR WELDS and ELECTRODES are as

follows:

Whenever possible, dissimilar welds between stainless steel and carbon or low alloy

steel should be avoided in wet H2S and other services where hydrogen

embrittlement is possible. This is because of hard zone that occurs at the fusion line

of austenitic metal and the carbon or low alloy steel base metal. This hard zone can

not be completely removed with PWHT. When dissimilar welds between carbon

steel and UNS NO8825 or UNS S32205 are specified in the drawings. The following

guidance is offered.

a. Carbon Steel to Alloy 825 (UNS N08825) For weld metal, use nickel-based filler metal type ER-NiCrMo-3(INCO 625) wire and E-NiCrMo-3 rod (INCO 112). b. Carbon Steel to Duplex 2205 (UNS S32205)

There is not an industry consensus on how to make a dissimilar weld between

carbon steel and Duplex 2205, suggests that the carbon steel side of the joint be

overlaid(“buttered”) with a first pass of low carbon steel (AWSR45 or equal). The

thickness of the “butter”should be 1/16-1/8 inch {1.5-3} max. This will avoid the

problem of a hard zone in the AWS E2209 (UNS W39209) weld metal due to dilution

from the carbon in carbon steel. The low Carbon “butter” pass should be as close to

1/16 in (1.5mm) minimum as possible so that the strength of the joint is

adequate.After the “butter”pass of low carbon weld metal is deposited on the carbon

steel, weld the Duplex 2205 to the ‘buttered” carbon steel with E2209 electrodes.

This procedure must be qualified to make sure that the tensile strength of the

joint is adequate. As part of the welding procedure qualification a microhardness


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survey should be run across the weld to make sure that there is no hardness that

exceeds those recommended by NACE MRO103. In addition, because the yield

strength of the Duplex 2205 is so much higher than that of carbon steel, the welding

procedure should be qualified using longitudinal bends rather than transverse bends

as permitted by the code. This will avoid failure in the carbon steel before the Duplex

2005 begin to bend.

Some refiners weld carbon steel directly to Duplex 2205 using filler metal type ER-

NiCrMo-3 (INCO 625) wire and E-NiCrMo-3 rod (INCO 112). As part of the welding

procedure qualification a micro hardness survey should be run across the weld to

make sure that there is no hardness that exceeds those recommended by NACE

MRO103.

3.5 Low Temperature Service

Delta ferrite content of austenitic stainless steel filler metals shall be controlled as

follows:

Where the design temperature is at -1010C or lower, the electrodes (SMAW) and

welding rods (GTAW) shall be low carbon type. In addition, the ferric content of

electrodes (SMAW) shall be in the range of 2 to 5 percent (FN2 to FN5). Using low

ferrite content electrodes (SMAW) such as NC-38LT (Kobe Steel Ltd), WEL308LA

(Nippon Welding Rod Co, Ltd) is recommended.

3.6 Preheat and Interpass Temperature

3.6.1 Preheat temperature for procedure qualification test must be measured just before

start of welding and temperature shall be recorded in PQR.

3.6.2 The maximum interpass temperature for austenitic stainless steels shall not exceed -

1800C.


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3.7 Postweld Heat Treatment (PWHT)

3.7.1 PWHT for dissimilar joint between ferritic materials shall be at higher of the

temperature range for the materials in the joint.

3.7.2 PWHT cycles used for procedure qualification test shall be recorded in a chart and

attached to PQR for PMC approval.

3.7.3 PWHT cycles including heating rate, the maximum and minimum holding

temperatures, holding time and cooling rate shall be specified in WPS.

3.7.4 PWHT shall be performed when it is stipulated in H-103 for certain services

regardless of base metal thickness.

3.7.5 When joining austenitic material to ferritic material of the thickness being required

PWHT by applicable code, the welding procedure and PWHT applications shall be

confirmed from PMC.

3.7.6 The requirements for PWHT of fillet weld joints and branch connections shall be

referred to the requirements on H-301 “Piping Construction Works”.

3.7.7 All 18-8 cold bends should be heat treated at 1500-16500F (843-899

0C) , 1 hour per

inch of thickness, 1 hour minimum for resistance to chloride stress corrosion

cracking (CISCC).

3.7.8 Drain lines and lower points in austenitic stainless steel lines are particularly prone to

chloride stress corrosion cracking (CISCC) shall be PWHT. PWHT lowers the


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incidence of CISCC of drain lines. It does not eliminate it. Therefore, it is

recommends drains and low points be made of Alloy 625, Alloy 825 or Alloy 20Cb3.

3.7.9 Carbon steel piping joints , for thick walled piping in hydrogen or hydrogen-

hydrocarbon services, the wall thickness of pipe greater than ¾” (19 mm) should be

post weld heat treated.

3.7.10 All weld of 18-8 stainless steel for thick walled piping in hydrogen or hydrogen-

hydrocarbon services should be post weld heat treatment.

3.7.11 All weld of Cr-Mo steel piping for thick walled piping in hydrogen or hydrogen-

hydrocarbon services should be post weld heat treatment.


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ATTACHMENT – 1

TABLE –1 LIST OF ITEMS FOR WELDING PROCEDURE QUALIFICATION

(QW-451.1)

TABLE – 2 APPLICABLE BASE MATERIAL SPECIFICATION

TABLE – 3 SELECTION OF ELECTRODES AND WELDING RODS


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TABLE - 1

List of Items for Welding Procedure Qualification (QW-451.1)

Test piece Applicable Items of examination and number of test specimen

Material

Classification

Thickness t of test coupon welded

Thickness in actual work

Tension Face bend

Root bend

Side bend

Impact Appearance

Less than 1.6 mm (1/16 in.)

t - 2t 2 2 2 - -

1.6 mm (1/16 in.) to 9.5 mm (3/8 in.)

1.6 - 2t 2 2 2 - * 2 sets (3

pcs/set)

Classification of P-Number

Over 9.5 mm (3/8 in.), less than 19 mm (3/4 in.)

4.8 - 2t 2 2 2 - * 2 sets (3

pcs/set)

For both sides of all test specimen

19 mm (3/4 in.) to less than 38 mm (1 1/2 in.)

4.8 - 2t 2 - - 4 * 2 sets (3

pcs/set)

38 mm (1 1/2 in.) and over

4.8 - 203 (8 in.)

2 - - 4 * 2 sets (3

pcs/set)

Note * Notch toughness test shall be made at the weld metal, base metal, and heat

affected zone when impact test is required.

Remark t = Thickness of Base Metal.


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TABLE - 2

Applicable Base Material Specifications

P- Base Material Specification

No. Metal Pipes Fittings Flanges Others

No.

1 1 A106Gr B A105 A105 A216 Gr. WCB

API 5L Gr B A234 Gr WPB

A53 Gr A/B A515 Gr. 55

A672 Gr.A55 CL.13 A283 Gr. D

A672 Gr.A55 CL.22

A672 Gr.A60 CL.13

A672 Gr.B60 CL.12

A672 Gr.B60 CL.22

2 A333 Gr.1 A350 Gr. LF2 A350 Gr. LF2 A350 Gr. LF2

A671 Gr.CC60 CL.13 A420 Gr.WPL6 A352 Gr. LCB

A516 Gr.60

4 4 A335 Gr P11 A182 Gr F11 A182Gr. F11 CL.1

A217 Gr. WC6

A234 Gr WP11

A691 Gr.11/4Cr A387 Gr.11 CL.1

A335 Gr P12 A182 Gr F12 A182 Gr.F12 CL.1

A234 Gr WP12

A691 Gr.1Cr CL.22 A387 Gr.12 CL.1

A691 Gr.1 1/4Cr CL.42

5A 5 A335 Gr P22 A182 Gr. F22 CL.1 A182 Gr. F22 CL.1

A217 Gr. WC9

A234 Gr. WP22 CL.1

A691 Gr.2 1/4 Cr

8 9 A312 TP304 A182 F304 A182 F304 A182 F304

A358 Gr. 304 CL.2 A403 WP 304 A351 Gr.CFB


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A240 Type 304

11 A312 TP304H A182 F304H A182 F304H

A403 WP 304H

12 A312 TP316 A182 F316 A351 Gr.CF8M

A358 Gr. 316 CL.2 A403 WP 316

13 A312 TP316L A182 F316L A351 Gr. CF8M

A358 Gr.316L CL.2 A403 WP 316 L


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PROCEDURE SPECIFICATION

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TABLE - 3

Selection of Electrodes and Welding Rods

Base Metal

SL. No.

Nominal

Type of

Base Metal SL. No.

(P-No.) Base Metals 1 2 3 4 5 6 7 8 9 10 11 12 13 14

1 (P-No.1) Carbon Steel A(1) A

(2) A

(2) A

(2) A

(2) D E A/B R/T

(4) R/T

(4) R/T

(4) R/T

(4) R/T

(4) R/T

(4)

2 (P-No.1) Al-Killed

Carbon Steel B - - - - - A/B R/S

(3) R/S

(3) - R/S

(3) R/S

(3) -

3 (P-No.3) C-1/2Mo C C C D E - R/T(4) - R/T

(4) R/T

(4) - R/T

(4)

4 (P-No.4) 1Cr-

1/2Mo,11/4 Cr-1/2Mo

D D D E - R/T(4) - R/T

(4) R/T

(4) - R/T

(4)

5 (P-

No.5A) 21/4 Cr-1Mo E E E - R/T

(4) - R/T

(4) R/T

(4) - R/T

(4)

6 (P-

No.5B) 5 Cr - 1/2 Mo F F - R/T

(4) - R/T

(4) R/T

(4) - R/T

(4)

7 (P-

No.5B) 9 Cr-1Mo G - R/T

(4) - R/T

(4) R/T

(4) - R/T

(4)

8 (P-

No.9B) 3-5Ni H R/S

(3) R/S

(3) - - - -

9 (P-No.8) Type 304 J J J J - -

10 (P-No.8) Type 304L K - - - -

11 (P-No.8) Type 304H L - - -

12 (P-No.8) Type 316 M M -

13 (P-No.8) Type 316L N -

14 (P-No.8) Type 321 and Type 347

P


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Nomenclature:

Spec. (SFA)

AWS (Class) Spec. (SFA)

AWS (Class)

A 5.18 ER7OS-G (5) K 5.9 ER308L

5.1 E7016/ E7018 5.4 E308L-16

B 5.18 ER70S-G (6) L 5.9 ER308H

5.1 E7016-1/E7018-1 5.4 E308H-16

C 5.28 ERXXS-G (7) M 5.9 ER316

5.5 E7016-A1/E7018-A1

5.4 E316 - 16

D 5.28 ER 80SB2 N 5.9 ER316L

5.5 E8016-B2/ E8018-B2

5.4 E316L-16

E 5.28 ER90S-B3 P 5.9 ER347

5.5 E9016-B3/ E9018-B3

5.4 E347-16

F 5.9 ER502 R 5.9 ER309

5.4 E502-16 5.4 E309-16

G 5.9 ER505 S 5.9 ER309L

5.4 E505-16 5.4 E309L-16

H 5.28 ER80S-Ni3 T 5.14 ERNiCr-3

5.5 E7016-C2L/E7018-C2L

5.11 ENiCrFe-2

J 5.9 ER308 ENiCrFe-3

5.4 E308-16

DISSIMILAR ELECTRODES AND WELDING ROD:

a. Carbon Steel to Alloy 825 ( UNS NO8825)

For weld metal, use nickel-based filler metal type ER-NiCrMo-3 ( INCO 625 ) wire and E-NiCrMo-3 rod (INCO 112)

b. Carbon Steel to Duplex 2205 ( UNS S32205)

For weld metal, follow as per para 3.4.4 strictly.


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Notes:

(1) Application of AWS classification E6010 (DC only) for root pass shall be subject to PMC approval (see par. 3.3.1).

(2) Do not use E6010 (DC only) for root pass.

(3) When the applicable code requires PWHT for the ferritic base metal, the application of welding procedure and PWHT shall be confirmed to PMC.

(4) When the applicable code requires PWHT for the ferritic base metal, the application of welding procedure and PWHT shall be confirmed to PMC.

Type 309 welding materials shall not be used where the design temperature exceeds 450

0C.

Inconel can not be used for the sulfidation environment at the design temperature above 537

0C.

(5) The filler metal shall meet the chemical and mechanical test requirements of SFA 5.18, classification ER70S-2, ER70S-3 or ER70S-6.

(6) Filler metals for welds shall meet the same minimum impact test requirements as those of the base metal.

(7) Chemical composition and mechanical properties of the deposited weld metal shall be same as the base metal.


HPCL, Visakh


WELDING PROCEDURE

SPECIFICATION

ISSUED : 29.12.2008 JOB NO. : 6261



ATTACHMENT – 2

ATTACHED FIGURE OF JOINT SKETCH


HPCL, Visakh


WELDING PROCEDURE

SPECIFICATION

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ATTACHMENT – 3

APPENDIX – 1

WELDING SPECIFICATION FOR PRESSURE PIPING


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WELDING PROCEDURE

SPECIFICATION

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1. A sheet of WELDING SPECIFICATION FOR PRESSURE PIPING is not effective as

a WPS. 2. Either the ASME Code B31.1 or B31.3 is referred in a sheet. 3. Identification B3 5 7 SR PWHT Base Metal No. (2)

(2)

Base Metal No. (1) Code

(3)

(1) The last part “-SR” indicates “PWHT YES”.

(2) A Base Metal Number is correspondence to the numbers in TABLE 1.

But for dissimilar joints, P-No. 8 materials are designed as “P8”.

(3) B3 means ANSI/ ASME B31.3 and B1 does ANSI / ASME B31.1.

4. The differences of the listed base metals between “PWHT YES” and “PWHT NO”

sheet are subjected to code requirements for : (a) a thickness of thicker component at the joint (B31.3) a nominal base metal thickness (B31.3)

(b) a specified carbon content

(c) a specified minimum tensile strength (σ)

(d) a specified chromium content


HPCL, Visakh


WELDING PROCEDURE

SPECIFICATION

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APPENDIX – 1

WELDING SPECIFICATION FOR PRESSURE PIPING

Sheet No. for Piping System based on ANSI / ASME B 31.1

B3-1.1

B3-1.8

B3-8.8

B3-4.4

B3-4.4 SR


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WELDING PROCEDURE

SPECIFICATION

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APPLICABLE CODE THICKNESS RANGE

ASME B31.3 Groove Weld : Nominal Thickness T (mm) : T< 19 ASME SEC. IX Fillet Weld : See Par. 3.9.3 in H – 301.

BASE METALS (QW-403)

P-No. 1 Material Spec. (P-No./ Group No.)

Pipes Fittings Flanges Others A106 Gr B (1/1) A105 (1/2) A105 (1/2) A216 Gr. WCB (1/2)

API 5L Gr B (1/-) A234 Gr. WPB (1/1) A 105 (1/2)

A53 Gr A/B (1/1) A515 Gr. 55 (1/1)

A672 Gr. A55 CL.13 (1/1) A283 Gr. D (1/1)

A672 Gr. B60 CL.13 (1/1)

A672 Gr. B60 CL.13 (1/1)

IS 1239 Part I (1/-)

IS 3589 (1/-)

WELDING PROCESS FILLER METALS (QW-404) GAS (QW-4089)

Groove weld : GTAW (Root Pass) 1) Spec. (SFA) AWS

(Class) Shielding gas :

GTAW : 5.18 ER70S-G 2) Argon 99.9%

vol. or over

SMAW (Filler Pass) 5.1 E7016 5.1 E7018 Gas Backing : Not Applicable

PREHEAT (QW-406) POSTWELD HEAT TREATMENT (QW-407)

Preheat Temp. (0C) : Min 10. Required : No.

Interpass Temp. (0C) : - Metal Temp. Range (

0C) : -

Preheat Maintenance : - Min Holding Time (hr / 25mm)

TECHNICAL NOTES :

1) A Minimum preheat of 950C is applied when the nominal material thickness of either of the base metals

exceed 25.0 mm. 2) Application of AWS classification E6010 (DC only) for root pass shall be subjected to PMC approval. 3) Filler metals shall meet the chemical and mechanical test requirements of SFA 5.18, AWS class. ER70S-2,

ER70S-3, or ER70S-6. TGS-50 (ER70S-G: Kobe Steel) is acceptable for using. 4) Process conditions such as caustic, amine and wet hydrogen sulfide may require PWHT regardless of

thickness. 5) A1A, A2S, A6S Class H 103


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WELDING PROCEDURE

SPECIFICATION

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P No. 1 To P. No.8 Material Spec. (P-No./ Group No.)

Pipes Fittings Flanges Others A106 Gr B (1/1) A105 (1/2) A105 (1/2) A216 Gr. WCB (1/2) API 5L Gr. B (1/-) A234 Gr. WPB (1/1) A182 F 304 (8/1) A105 (1/2)

A53 Gr A/B (1/1)

A 312 TP 304 (8/1) A182 F 304 (8/1) A182 F 304 (8/1)

A 358 TP 304 (8/1) A403 WP 304 (8/1)


Groove weld : GTAW (Root Pass) Spec. (SFA) AWS (Class)

Shielding gas :

GTAW : 5.9 ER309 Argon 99.9% vol. or over

SMAW (Filler Pass) 5.4 E309-16 Gas Backing : Argon 99.9%

vol. or over



Interpass Temp. (0C) : 180

OC Metal Temp. Range (

0C) : -


TECHNICAL NOTES :

1) Filler metals shall meet the chemical and mechanical test requirements of SFA 5.9, ER 309 and SFA 5.4 AWS E 308-16


HPCL, Visakh


WELDING PROCEDURE

SPECIFICATION

ISSUED : 29.12.2008 JOB NO. : 6261






P. No.8 Material Spec. (P-No./ Group No.)

Pipes Fittings Flanges Others

A 312 TP 304 (8/1) A182 F 304 (8/1) A182 F 304 (8/1) A182 F 304 (8/1)

A 358 TP 304 (8/1) A403 NP 304 (8/1) F 316 (8/1)



Shielding gas :

GTAW : 5.9 ER308 Argon 99.9% vol. or over

SMAW (Filler Pass) 5.4 E308-16 Gas Backing : Argon 99.9%

vol. or over




OC Metal Temp. Range (

0C) : -


TECHNICAL NOTES :

1) Filler metals shall meet the chemical and mechanical test requirements of SFA 5.9, AWS class. ER 308 and SFA 5.4 AWS E 308-16

2) A1K, A1L, B3K, B1L Class of H 103


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WELDING PROCEDURE

SPECIFICATION

ISSUED : 29.12.2008 JOB NO. : 6261




ASME B31.3 Groove Weld : Nominal Thickness T (mm) : T< 12.7 ASME SEC. IX Fillet Weld : See Par. 3.9.3 in H – 301.




A 335 Gr. P11 (4/1) A 234 WP 11 (4/1) A182Gr.F 11 (4/1) A 217Gr. WC 6 (4/1)

A 335 Gr. P12 (4/1) A 234 WP 12 (4/1) A182Gr.F 12 (4/1)

A 691 Gr. 1 ¼ Cr. (4/1) A 182 F 11 (4/1)

A 691 Gr. 1 Cr CL-22 (4/1) A 182 F 12 (4/1)

A 387 Gr. 11 (4/1)

A 387 Gr. 12 (4/1)



Shielding gas :

GTAW : 5.28 ER80S-B2 Argon 99.9% vol. or over

SMAW (Filler Pass) 5.5 E8018-B2 Gas Backing : Argon 99.9%

vol. or over


Preheat Temp. (0C) : Min 180

oC Required : No.


OC Max Metal Temp. Range (

0C) : NA

Preheat Maintenance : Yes Min Holding Time (hr / 25mm) NA

TECHNICAL NOTES :

1) Filler metals shall meet the chemical and mechanical test requirements of SFA 5.28, AWS class. ER 80S-B2 and SFA 5.5 AWS Class E 8018-B2

LEGEND :- NA – Not Applicable


HPCL, Visakh


WELDING PROCEDURE

SPECIFICATION

ISSUED : 29.12.2008 JOB NO. : 6261




ASME B31.3 Groove Weld : Nominal Thickness T (mm) : T > 12.7 ASME SEC. IX Fillet Weld : See Par. 3.9.3 in H – 301.




A 335 Gr. P11 (4/1) A 234 WP 11 (4/1) A182Gr.F 11 (4/1) A 182 Gr. F 11 (4/1)

A 335 Gr. P12 (4/1) A 234 WP 12 (4/1) A182Gr.F 12 (4/1) A 182 Gr. F 12 (4/1)

A 691 Gr. 1 ¼ Cr. (4/1) A 182 F 11 (4/1) A 217Gr. WC 6 (4/1)

A 691 Gr. 1 Cr CL-22 (4/1) A 182 F 12 (4/1)

A 387 Gr. 11 CL 1

(4/1)

A 387 Gr. 12 CL 1

(4/1)



Shielding gas :

GTAW : 5.28 ER80S-B2 Argon 99.995% vol. or over

SMAW (Filler Pass) 5.5 E8018-B2 Gas Backing : Argon 99.995%

vol. or over


Preheat Temp. (0C) : Min 180

oC Required : Yes, above

12.7 mm .


OC Max Metal Temp. Range (

0C) : 703 – 740

Preheat Maintenance : Yes Min Holding Time (hr / 25mm) 2 Hrs. min.

TECHNICAL NOTES :

1) Filler metals shall meet the chemical and mechanical test requirements of SFA 5.28, AWS class. ER 80S-B2 and SFA 5.5 AWS Class E 8018-B2

LEGEND :- NA – Not Applicable

H-331 E WPS

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