United States Nuclear Regulatory Commission - Protecting People and the Environment

Bulletins: 1974 Index

File Name Date Description
BL-74-10b 01/24/1975 Failures in 4-Inch Bypass Piping at Dresden 2
BL-74-10a 12/17/1974 Failures in 4-Inch Bypass Piping at Dresden 2
BL-74-16 12/13/1974 Improper Machining of Pistons in Colt Industries (Fairbanks-Morse) Diesel-Generators
BL-74-15 12/06/1974 Misapplication of Cutler-Hammer Three Position Maintained Switch Model No. 10250T
BL-74-14 11/13/1974 BWR Relief Valve Discharge to Suppression Pool
BL-74-13   Improper Factory Wiring on General Electric Motor Control Centers at Fort Calhoun
BL-74-12 10/21/1974 Incorrect Coils in Westinghouse Type SG Relays at Trojan
BL-74-11 10/16/1974 Improper Wiring of Safety Injection Logic at Zion 1 & 2
BL-74-10 09/18/1974 Failures in 4-Inch Bypass Piping at Dresden 2
BL-74-09 08/06/1974 Deficiency in General Electric Model 4KV Magne-Blast Breakers
BL-74-08 07/23/1974 Deficiency in the ITE Molded Case Circuit Breakers, Type HE-3
BL-74-07 06/26/1974 Personnel Overexposure - Irradiation Facility
BL-74-06 05/22/1974 Defective Westinghouse Type W-2 Control Switch Component
BL-74-04a 05/01/1974 Malfunction of Target Rock Safety Relief Valves
BL-74-05 04/12/1974 Shipment of an Improperly Shielded Source
BL-74-03a 04/26/1974 Failure of Structural or Seismic Support Bolts on Class I Components
BL-74-04 03/22/1974 Malfunction of Target Rock Safety Relief Valves
BL-74-03 03/22/1974 Failure of Structural or Seismic Support Bolts on Class I Components
BL-74-02a 02/22/1974 PWR Main Steam Line Isolation Valves
BL-74-002 01/22/1974 Truck Strike Possibility
BL-74-001a 01/10/1974 Abnormal Occurrences in Piping Systems
BL-74-001 01/03/1974 Valve Deficiencies
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