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WELDING PROCEDURE SPECIFICATION (WPS)
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PROJECT NAME PJT Contract Number WPS No. :
Date :
Supporting PQR No. : Procedure for :
24" X 12.7MM
Welding Process
SMAW / MANUAL
Applicable Code :
ASME B31.3
JOINT Joint Design :
See Below
Bevel Angle :
30o± 5o
Backing
N/A
Root Gap :
2mm±0.4mm
N/A
Root Face :
1.6mm ±0.8mm
:
Backing Material :
BASE METAL Material Specification Type & Grade : Material Items (Name)
API 5L X60 Pipe to Pipe or Pipe to fittings (CE shall not increase with more than 0.03)
Pipe Diameter Qualified
24"
Pipe Diameter Range
12'' - 36''
Pipe Thickness Qualified:
12.7mm
Pipe Thickness Range :
9.5mm - 19.05mm
FILLER METALS Weld Run ROOT
Size 1/8" (3.2mm)
Electrode Brand Lincoln Fleet Weld
AWS Specification A 5.1
HOT PASS
1/8" (3.2mm)
Lincoln Jet Weld
A 5.1
FILLING CAPPING
5/32" (4.0MM) 5/32" (4.0MM)
Lincoln Jet Weld LH70 Lincoln Jet Weld LH70
A 5.5 A 5.5
AWS Classification E6010 5P+ E7018 H4R E7018 H4R E7018 H4R
ELECTRODE STORAGE Electrode Drying Condition:
E6010
As per manufacturer's recommendation for handling and storage. Redrying not recommended
E7018
As per manufacturer's recommendation. Pre-drying temperature: 80oC to 105oC for 2hrs. Re-drying temperature: 340oC to 400oC for 3-4hrs
POSITION & DIRECTION OF WELDING Welding Position Direction of Welding Minimum Number of Runs Number of Welders Type of Clamp Removal of Clamp String or Weave Bead Max Time, Completion of Root & Commencement of hot pass Max Time Between Passes
6G All passes vertical up 12 2 External After minimum of 50% completion of Root Pass String/Weave Less than 5 minutes Less than 5 minutes Shall be completed greater than 1/2 wall thickness of pipe, otherwise cutout
Number of runs completed before cooling to ambient temperature
PRE-HEAT PREHEAT Preheat Temperature Inter Pass Temperature Type of Heater Inter Pass Cleaning
YES PWHT N/A Mini 40oC Max 200oC Rosebud Burner Grinding and Brushing Digital Thermometer or Temp Stick shall be used for recording Pre-Heat and inter pass temperature. Welding shall be protected from rain and wind
Temperature Control
ELECTRICAL CHARACTERISTIC & TECHNIQUE Weld Run ROOT HOT PASS FILLING CAPPING
Process/Direction SMAW/V-UP SMAW/V-UP SMAW/V-UP SMAW/V-UP
Amperage 80-120 100-140 110-150 110-150
Voltage 20-29 24-30 22-27 24-30
Polarity DC+ DC+ DC+ DC+
Travel Speed (MM/MIN) 66 - 103 96 - 134 117 - 156 121 - 136
Heat Input (KJ/MM) 1.09 - 2.80 1.34 - 2.93 1.30 - 2.99 1.26 - 2.92
NON DESTRUCTIVE EXAMINATION VISUAL BEVEL NOTE
100% Visual Inspection 100% MPI After completion of the weld, MPI & 100% MPI and Radiography 12hrs after welding
APPROVAL NAME:
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NAME:
SIGNATURE:
SIGNATURE:-
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DATE:
DATE:-
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