COMACOE FIELD INSPECTION AND TEST PLAN FOR HDPE PIPE WELDING CUSTOMER : GAYATRI PROJECTS OWNER:THERMAL POWER TECH LIMITED CORPORATION INDIA LTD PROJECT : 2X660 MW TPCIL PH# 1, 2X660 MW, Thermal Power Plant at Krishnapatnam, Andhra Pradesh, India PACKAGE/SYSTEM : SWIO HDPE PIPE WELDING. SL.N O 1.
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DESCRIPTION OF ITEM/OPERATI ON /STAGE HDPE Pipes & fittings incoming inspection
Trial welding
Production Welding of Pipe to Pipe and Pipe to stub end .
CHARACTERISTIC S
TYPE/ METHOD OF CHECK
EXTE NT OF CHEC K
REFERENCE DOCUMENT S
Surface finish of pipes& fittings at the stock yard on receipt from supplier
Visual & Measureme nt
100%
ISO 4427 & specification
Drag Force, temperatures, time periods, welding pressure
Recording of weld parameters
100%
Manufacture rs catalogue, Preliminary WPS
a Ovality adjustment prior to welding
measureme nt
100%
Inspection report
b Drag force Visual &
Page 1 of 2
Approved trail welding
ACCEPTAN CE NORMS
FORMA T OF RECORD
FITP NO : QAPC/CM110809060104 REV.NO : 03 DATE : 08.12.2011
COMAC OE
GP L
TPC IL
Cuts and transportati on damages not more than 10% of wall thickness. Adherence to welding parameter ranges.
Inspectio n report
P
W
W
Weld log sheet
p
W
W
Shall Not more than ± 10% of wall thickness Not more than of welding
Manual Weld log
p
W
RW
Weld Log sheet & Inspectio
P
W
RW
REMARKS
Comparison data logger & manual recording of parameters.
