Guidance on examination of steel wire rope through magnetic rope testing (MRT)

Version history

February 2024  Rev. 1.1 – Amendment MRT definition and addition of MFL definition; updating preface, reference links and layout

October 2018 Rev. 1 – Extensive document revision which includes rejection criteria and MRT equipment operator levels of competence and training

August 2009 – Initial publications

Summary

This document aims to provide guidance on the use of non-destructive examination (NDE) by means of MRT for wire ropes, to assist with inspection and integrity management.

This document should be used as supplementary guidance to Guidance on Wire rope integrity management for vessels in the offshore industry in which NDE is identified as one of the six tools which can form part of a wire rope integrity management system. At the time of publication, MRT equipment is manufactured for wire ropes up to 180mm diameter. Practical use of MRT may not be feasible in some circumstances. Where there are limiting factors to the use of MRT equipment IMCA LR001, IMCA HSS022, IMCA M194 gives further guidance.

A new addition to this document includes rejection criteria based on MRT data and the effective interpretation of the results.

Contents

• Glossary of Terms
• Introduction
• Scope
• Background
• Health and Safety
• Principles of Operation – How Magnetic Rope Testing (MRT) Works
• Parameters
• Verification and Calibration
• Manufacturers Operating Guidelines
• Competence and Training
• Interpretation of Data
• MRT Trace Reports
• Rejection Criteria
• Recording and Retention of Records
• References