ANSI NB-23:2001 pdf free download – National Board Inspection code
In keeping with the principles of promoting safety and maintaining uniformity, the National Board originally published The National Board Inspection Code (NBIC) in 1946, establishing rules for inspection and repairs to boilers and pressure vessels. The National Board Inspection Code (NBIC) Committee is charged with the responsibility for maintaining and revising the NBIC. In the interest of public safety, the NBIC Committee decided, in 1995, to revise the scope of the NBIC to include rules for the repair or alteration to pressure retaining items. The NBIC Committee’s function is to establish rules of safety governing the repair, alteration and inspection of pressure retaining items, and to interpret these rules when questions arise regarding their intent. In formulating the rules, the NBIC Committee considers the needs of users, repair organizations, and Inspectors. The objective of the rules is to afford reasonably certain protection of life and property so as to give a reasonably long, safe period of useful- ness. Advancements in design and material and the evidence of experience are recognized. The rules established by the NBIC Committee are not to be interpreted as approving, recom- mending, or endorsing any proprietary or specific design, or as limiting in any way the repair organization’s freedom to choose any method of repair or alteration that conforms to the NBIC rules. The NBIC Committee meets regularly to consider revisions of the rules, new rules, and requests for interpretations. Requests for interpretation must be addressed to the Secretary in writing and must give full particulars in order to receive consideration and a written interpre- tation (see Mandatory Appendix“1″ covering preparation of technical inquiries). Proposed revisions to the Code resulting from inquiries will be presented to the NBIC Committee for appropriate action.
The Review Team, as a minimum, shall consist of one representative each from the Authorized Inspection Agency and the Jurisdiction.1 The Review Team shall conduct an eval- uation of the organization’s Quality System. The organization shall demon- strate sufficient implementation of the Quality System to provide evidence of the organization’s knowledge of welding, nondestructive examination, postweld heat treatment, and other repair or alter- ation activities performed appropriate for the requested scope of work. The dem- onstration may be performed using cur- rent work, a demonstration mock-up, or a combination of both. A recommendation to issue, renew, or withhold the National Board Certificate of Authorization shall be included in a Review Report prepared by the Review Team. The completed Review Report shall be forwarded to the National Board.