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WPS - Merd-01

This document is a structural weld procedure specification proposal for Vietsovpetro. It proposes welding procedures for single V-groove joints in steel plates and pipes from 3mm to 20mm thick using shielded metal arc welding with E7016 and E7018 electrodes. The procedure specifies positions, preheat requirements, electrical parameters, and welding variables for root, fill and cap passes. It references supporting procedure qualification records and was prepared according to the AWS D1.1-2008 structural welding code.

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Phuong Nguyen
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487 views3 pages

WPS - Merd-01

This document is a structural weld procedure specification proposal for Vietsovpetro. It proposes welding procedures for single V-groove joints in steel plates and pipes from 3mm to 20mm thick using shielded metal arc welding with E7016 and E7018 electrodes. The procedure specifies positions, preheat requirements, electrical parameters, and welding variables for root, fill and cap passes. It references supporting procedure qualification records and was prepared according to the AWS D1.1-2008 structural welding code.

Uploaded by

Phuong Nguyen
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOC, PDF, TXT or read online on Scribd
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VIETSOVPETRO

DOCUMENT TITLE: STRUCTURAL WELD PROCEDURE SPECIFICATION


PROPOSAL

DOCUMENT No: VSP – MEO – 01S(2G-3G-4G)

0 21/12/09 For Review


REV DATE DESCRIPTION PREPARED BY CHECKED BY APPROVED BY

Page 1 of 3
WELDING PROCEDURE DOC. No:VSP-MEO-01S(2G-3G-4G)
SPECIFICATION PROPOSAL REV. No: 0
VIETSOVPETRO DATE : 21/12/2009

CODE/ STANDARD : AWS D1.1-2008

WPS No: VSP-MEO-01S(2G-3G-4G) Rev: 0 Date : 21/12/2009

Supporting PQR No: PQ.SM-01S (2G) Date :


PQ.SM-02S (3G) Date :
PQ.SM-03S (4G) Date :

Welding Process: SMAW Type: Manual

JOINTS:

Joint Design: CJP Single Vee


Backing: N/A
Backing Material Type: N/A
Back Gouging: N/A
Method: N/A
Root gap 3.5 0.5mm
Root Face: 1.6  0.5mm
Angle Groove: 60  5

BASE METALS:
 Test material Spec: ASTM – A572
Type or Grade: Gr 50
Test Dimension: Plate 10mm

 Qualified Material: Group I To Group I, Group I To Group II, Group II To Group II


(Table 3.1& Table 4.8 AWS D1.1)

 Range :
Thickness : 3mm to 20mm Fillet: All
Diameter (Pipe ) : 600 mm and Over Fillet: All

FILLER METALS: SMAW


F No: 4
A No: 1
SFA No: 5.1

AWS No (Class): E7016 / E7018


Size of Filler Metals ( mm ): 3.2, 4.0
Electrode Flux Class: N/A
Flux Trade Name: N/A
Electrode /Wire Trade Name: LB52U-KOBELCO

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WELDING PROCEDURE DOC. No:VSP-MEO-01S(2G-3G-4G)
SPECIFICATION PROPOSAL REV. No: 0
VIETSOVPETRO DATE : 21/12/2009

POSITIONS QUALIFIED POST WELD HEAT TREATMENT


Position of Groove: All (except 6GR) Temperature Range: N/A
Welding Progression: Up hill Thickness Range: N/A
Position of Fillet: All Time interval: N/A

PREHEAT GAS :
Preheat Temp. Min.: Ambient Shielding Gas: N/A
Interpass Temp. Max: 250 deg.C % Composition: N/A
Preheat Maintenance: N/A Flow Rate: N/A
Temp. Check: Tempstick or Thermometer Purging Rate: N/A

ELECTRICAL CHARACTERISTICS :
Current AC: NA SMAW: DCEP
Tungsten Electrode Size & Type: N/A
Mode of Metal Transfer for GMAW: N/A
Electrode Wire Feed Speed Range: N/A
TECHNIQUE :
String or Weave Bead: String Or Weave max. 3 times of the electrode diameter
Orifice Or Gas Cup Size: N/A
Initial & Interpass Cleaning: Grinding/Brushing/Chipping
Method of Back Gouging: NA
Multi-pass or Single Pass (per side): Multipass
Other: N/A

INSTRUCTION
Thickness of thickest part of base metal (mm) Minimum preheat and interpass Temp. C
Group I Group II
4.8 To 38 Incl. 4.8 To 19 Incl. Ambient
Over 38 To 63.5 Incl. Over19 To 38 Incl. 66

WELDING VARIABLE
Filler Metal Welding Current Travel
Weld Heat Input
Process Volt Speed
Layers Class Dia.(mm) Type Amps (KJ/mm)
(mm/min.)
Root SMAW E7016 3.2 DCEP 75-95 19 -21 51 - 65 1.31-2.35
Rest/Cap SMAW E7018 3.2 DCEP 85-130 22-26 70-120 0.935-2.89
Rest/Cap SMAW E7018 4.0 DCEP 120-170 22-26 100-160 0.99-2.65
Prepared By: Checked By: App. By VSP: App. By CA:

Signature: Signature: Signature: Signature:

Date : Date : Date : Date :

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