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Each interpretation applies to the edition and addenda or supplement listed for that inquiry. When an Edition date is not stated, each interpretation applies either to the latest Edition or Addenda at the time of issuance of the interpretation. Many of the requirements on which the interpretations have been made are revised in later editions, addenda or supplements. Where such revisions have been made, the interpretations may no longer be applicable to the revised requirement. ASME procedures provide for reconsideration of these interpretations when or if additional information is available which might affect any interpretation. Further, persons aggrieved by any interpretation may appeal to the cognizant ASME committee or subcommittee. ASME does not "approve", "certify", "rate" or "endorse" any item, construction, proprietary device, or activity
1. The database contains interpretations to ASME codes and standards issued after December 19, 2013, as well as most historical interpretations to the A17, Boiler and Pressure Vessel Code, B30, B31, B16, etc. The database is a work in progress and will be updated to include historical interpretations for all ASME codes and Standards, where applicable.
2. Due to display limitations, published historical interpretations do not in all cases reflect the actual approved interpretation. Wherein interpretations contain equations, formulas and/or sketches, consult the printed version of the interpretation. If you have any questions or comments, please email them to

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