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Examples of important Pressure Piping QA/QC documents

This document introduces some of the important QA/QC documents that are typically used in the industry. The aim is to explain their definition and purpose and also point out different types of information they provide to the reader.

List of Important Piping QC Documents

Inspection Test Plan (ITP)
Request for Information (RFI) /Non-Conformance Report (NCR)
Welder Qualifications
NDE Procedures/Qualifications/Results/Log
Weld Procedures(WPS/PQR),Weld Map/Weld Log
Pressure Test Procedures/Records
Calibration Records
Torque Procedures/Records/Maps
Material Test Report (MTR)
Line Designation Table (LDT)
P&IDs/As-built drawings
Punch Lists

Inspection Test Plan (ITP):

List of logical progression steps for inspections and tests
Must be approved by owner prior to start of construction.
Typically includes witness, review, hold, etc. points.
Signed by Contractor, Owner and ABSA if applicable

Material Test Report (MTR)

MTR certifies:
ASTM standards,
Applicable dimensions,
Physical and chemical specifications.
Provides material traceability through heat numbers
Tracking must be done upon receiving and during construction to ensure  right components are used
MTR can be useful for failure investigations

Line Designation Table (LDT)

Shows piping parameters such as line class, design pressure and temperature, test pressure, material, percent of NDE, etc.
Lists all the lines in the project and is a valuable and quick reference for QC activities

Piping Materials Classification

Indicates line class and associated service, material, corrosion allowance and design parameters limitations for that class
Lists description and rating of pipe, flanges, fittings, valves, etc. based on size of the item
Must be traceable to Bill of Material and LDT
Weld Map

Weld map shows welded joints, joint number and welder ID on an isometric drawing. It can include date, repair or cut-out and NDE information such as RT or MT report number.


Weld/NDE log

Lists welding procedures. heat numbers, drawing numbers, size, etc.
Weld log and weld map need to correlate and be traceable with supporting documentation.
Welding Procedure Specification (WPS)

Provides direction for making sound welds
Shall be implemented to obtain required mechanical properties (Strength, hardness, etc.)

Torque Sheet

Documents torqueing of flanges
Specifies fit-up checklist and torque values required
States torqueing method and tool’s calibration information
Identifies flange and gasket ratings


Pressure test report

States code of construction, type of test and line information
Specifies test pressure and duration of hold time
shows gage calibration information and test medium