Welding Procedure Specification For 24'' Pipe [PDF]

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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, ASME IX

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:

NAME:

NAME:

SIGNATURE:

SIGNATURE:-

SIGNATURE:

DATE:

DATE:-

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