NBBI NB23-2019 Part 4
- National Board Inspection Code - NBIC, 2019 Edition - Part 4 - Pressure Relief Devices
- standard by National Board of Boiler and Pressure Vessel Inspect
$115.00
$58.00
- Installation
- Inspection
- Repairs and Alterations
The words shall, should, and may are used throughout the NBIC and have the following intent:
- Shall - action that is mandatory and required.
- Should - indicates a preferred but not mandatory means to accomplish the requirement unless specifiedby others such as the Jurisdiction.
- May - permissive, not required or a means to accomplish the specified task.
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