Recent Blog Posts
Part 8: This is a continuation of our blog series explaining how to perform an IIAR 6 Appendix B inspection of an ammonia pressure vessel. Items M and N ask if the vessel certification drawings and manufacturer data report are on file. The data report, commonly referred to as a U-1 or U-1A form, we […]
Part 7: This is a continuation of our blog series explaining how to perform an IIAR 6 Appendix B inspection of an ammonia pressure vessel. Item I in the checklist inquires if the pipes are marked as required by IIAR Standard 2. Standard 2 requires piping mains, headers, and branches to be labeled with the […]
Part 6: This is a continuation of our blog series explaining how to perform an IIAR 6 Appendix B inspection of an ammonia pressure vessel. Item D requires the inspector to verify that supports and anchorage are adequate. For a ground-mounted pressure vessel, the anchorage should be inspected to ensure nuts are tight and free […]
Part 5: This is a continuation of our blog series explaining how to perform an IIAR 6 Appendix B inspection of an ammonia pressure vessel. Items B and C on Page 2 of the checklist ask if the vessel is suitable for ammonia and operating within limits. The inspector must verify that the vessel is […]
Part 4: This is a continuation of our blog series explaining how to perform an IIAR 6 Appendix B inspection of an ammonia pressure vessel. The second page of the checklist contains twenty questions that should be answered ‘yes’, ‘no’, or ‘not applicable’. The wording of each question is such that a ‘yes’ answer is […]