National board VR® repair symbol administrative rules and procedures
Subtitle: repair of ASME and national board stamped pressure relief valves.
Series: National board publication ;; no. NB-65, rev. 6
Publisher: National Board of Boiler and Pressure Vessel Inspectors
Published: 1985
Place of publication: Columbus, Ohio (1055 Crupper Ave., Columbus 43229)
Language: eng
Number of pages: 28
Subjects: Relief valves -- Maintenance and repair.
Other titles: Repair of ASME and national board stamped pressure relief valves.