IIMOPR060-10 Corrosion under Insulation Inspection Guideli.

IIMOPR060-10 Corrosion under Insulation Inspection Guideli....

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QUALITY ASSURANCE IIM DOCUMENTATION Page 1 of 8 CORROSION UNDER INSULATION INSPECTION GUIDELINES (CARBON STEELS & CORROSION RESISTANT ALLOYS) IIM-OPR-060/1:0 This document contains proprietary information and must not be copied or otherwise used without the written permission of Oceaneering D O C U M E N T NO : IIM-OPR-060/1:0 T I T L E : CORROSION UNDER INSULATION INSPECTION GUIDELINES (CARBON STEELS & CORROSION RESISTANT ALLOYS) ISSUE AND REVISION STATUS: 1 : 0 NEW PROCEDURE JAN 2004 DT RG ISS : REV DESCRIPTION DATE BY APP.D
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QUALITY ASSURANCE IIM DOCUMENTATION Page 2 of 8 CORROSION UNDER INSULATION INSPECTION GUIDELINES (CARBON STEELS & CORROSION RESISTANT ALLOYS) IIM-OPR-060/1:0 This document contains proprietary information and must not be copied or otherwise used without the written permission of Oceaneering REVISION STATUS INDEX REVISION DOCUMENT INDEX PAGE NO 0 1 2 1.0 INTRODUCTION. ............................................................................. 3 2.0 REFERENCES. ................................................................................ 3 3.0 DEFINITIONS. .................................................................................. 3 4.0 INSULATION REVIEW. .................................................................... 3 5.0 PRIORITISATION AND SELECTION OF FEATURES . ................... 4 6.0 FLUID/ PIPEWORK CRITICALITY. .................................................. 4 7.0 INTERMEDIATE AND MAJOR CUI INSPECTIONS. ....................... 5 7.1 CUI Inspection Frequencies. .................................................. 5 7.2 Inspection Requirements for Carbon Steels . ......................... 6 7.3 Inspection Requirements for Corrosion Resistant Alloys. ...... 7 7.4 Use of Inspection Results . ..................................................... 8 8.0 DAMAGE IDENTIFICATION . ........................................................... 8 9.0 NON-INVASIVE INSPECTION TECHNIQUES. ............................... 8 X X X X X X X X X X X X X
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QUALITY ASSURANCE IIM DOCUMENTATION Page 3 of 8 CORROSION UNDER INSULATION INSPECTION GUIDELINES (CARBON STEELS & CORROSION RESISTANT ALLOYS) IIM-OPR-060/1:0 This document contains proprietary information and must not be copied or otherwise used without the written permission of Oceaneering 1.0 INTRODUCTION The objective of these guidelines is to define the extent and type of inspection to be applied to all insulated pipework systems for the purpose of detecting Corrosion Under Insulation (CUI). It defines the pipework criticality in terms of the safety consequence of the fluid and details the required scope of intermediate and major inspections. These guidelines apply to the inspection of all process and utility pipework systems within offshore and onshore installations in the Oil and Gas Industry. 2.0 REFERENCES None 3.0 DEFINITIONS CSCC Chloride Stress Corrosion Cracking CVI Close Visual Inspection IIM/ IIA Inspection and Integrity Management (IIM)/ Independent Inspection Authority (IIA). Applies to the Oceaneering Departments that operate under ISO/ IEC 17020 (EN 45004) NGL Natural Gas Liquid NII Non Intrusive Inspection P & IDs Pipework & Instrument Drawings UT Ultrasonic Testing 4.0 INSULATION REVIEW An insulation inventory and review will be carried out. The insulation inventory review will be carried out to determine: Which pipework line numbers are lagged Which parts of these lines are lagged, e.g. whole lines, valves, small-bore off-takes, etc.
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IIMOPR060-10 Corrosion under Insulation Inspection Guideli....

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