4/7/2024 0 Comments National board boilerThis publication also includes a listing of organizations which have received a National Board certificate of authorization for the use of the VR repair symbol stamp in accordance with the National Board Inspection Code publication, NB-23 and NB-514, Accreditation of VR Repair Organizations. 764įOREWARD This publication presents the National Board pressure relief device certification program and lists those device designs certified and those organizations authorized to apply the National Board NB symbol to devices of certified types. LISTING OF TESTING ORGANIZATION CERTIFICATE HOLDERS. LISTING OF RUPTURE CCFs BY VALVE MANUFACTURER. LISTING OF ASSEMBLER AND MANUFACTURER CERTIFICATIONS. 2ĭETERMINATION OF CERTIFIED RELIEVING CAPACITIES. NATIONAL BOARD PRESSURE RELIEF DEVICE CERTIFICATION. National Board Pressure Relief Device CertificationsįOREWARD.
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