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For HIC test, What is the NACE MR0175 / TM0284 acceptance criteria?

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Question: For HIC test, NACE MR0175/ISO 15156-2, Table B.3 is not clear regarding the acceptance criteria to be taken into account. We usually understood that “CLR, CTR, CSR” to be taken into account is the average of the values measured from one test specimen as defined in NACE Standard TM0284, Paragraph 4.2.1. What is your position?


ISO 15156-2, B.5, Paragraph 3 makes clear that where no requirement is given NACE TM0284 shall be followed.

This question is in relation to NACE MR0175/ISO 15156-2 Annex B Table B.3

Reference: ISO 15156 Maintenance Panel Inquiry #2005-26Q2

The team at Oil and Gas Corrosion Ltd has prepared checklists that will help you make sure your material complies with NACE MR0175, visit the live and fully functional checklist for:

ASTM A516 Gr 70 NACE MR0175

A new revision of NACE TM0284 was issued in 2016; make sure you read our article on the main changes of NACE TM0284 2016: https://oilandgascorrosion.com/tm0284-2016/

UPDATE 2018-06-04: A recent Technical Circular brings relevant updates on NACE MR0175 regarding the HIC testing acceptance criteria: https://oilandgascorrosion.com/nace-mr0175-iso-15156-technical-circulars-for-part-2-and-3-published-2018-06-01/

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