New Air Receiver With a Blank National Board Registration Number
A plant receives a new 500-gallon ASME Section VIII Division 1 air receiver from a manufacturer. The nameplate shows MAWP 200 psig at 650°F, year 2024, and the National Board 'NB' mark, but the space for the National Board registration number is blank. The manufacturer's NB-2 data report is signed by the manufacturer and the authorized inspector, and the 'National Board No.' field says 'pending.' The plant's commissioned inspector is asked to approve installation. The jurisdiction has adopted NBIC and requires pressure vessels to be registered with the National Board before installation, and the owner's purchase specification requires an NB number on the nameplate and data report. The manufacturer says the number will be assigned later and that the NB mark proves the vessel is already accepted.
1. Should the inspector approve the receiver for installation? Why or why not?
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No. The nameplate has a blank National Board registration number and the NB-2 says 'pending.' In this jurisdiction, NBIC and the local rules require registration before installation, and the owner's specification requires the NB number on both nameplate and data report. The 'NB' mark by itself does not prove that registration has been completed; it is a mark associated with National Board requirements, but the number is the traceable identifier. The manufacturer's promise to supply the number later does not satisfy the installation requirement. The inspector should place the vessel on hold, not accept the data report as complete, and require a corrected nameplate and NB-2 showing the assigned number. The inspector should verify the number with the National Board or the manufacturer's records before release.
2. What if the jurisdiction did not require National Board registration?
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Then the missing number might not be a legal bar to installation, but it is still a data-report and nameplate discrepancy. The inspector should verify that the NB mark is legitimately applied and that the NB-2 is authentic and complete; the purchase specification may still require the number. The inspector should not simply ignore the blank. If the owner waives the specification, document the waiver and the basis; if the NB mark is being used to imply registration that has not occurred, that is a misrepresentation. In either case, the inspector should resolve the discrepancy before signing acceptance and should not alter the nameplate.
3. What documentation and notification should follow?
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The inspector should issue a nonconformance/hold report to the owner and manufacturer, cite the blank NB number and 'pending' data report, and state that installation is not approved. The jurisdiction should be notified if installation is attempted or if the manufacturer cannot produce registration. The inspector should require a corrected NB-2 and nameplate, verify the assigned number, and retain copies in the inspection file. The inspector must not stamp, engrave, or modify the nameplate; nameplate changes are the manufacturer's responsibility. Release for installation only after the corrected documents and nameplate are verified.