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
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