Document: NUREG-0800
Document ID: 72cf12c3-a823-4385-bbf4-92e2b543a906
Document Type: srp
Title: AC POWER SYSTEMS (ONSITE)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070498.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.3.1
CFR Part: 
CFR Title: 

Content:
of operation at less than full load for extended periods of time without degradation of performance or reliability. With offsite power available, no-load operation of the diesel generators will occur following a safety injection signal. Extended no-load operation of this equipment shall be minimized. Operating procedures shall be provided that limit extended no-load operation of the diesel generators. The procedures shall require loading the diesel engine to a minimum of 25% of full load for 1 hour after 8 hours of continuous no-load operation or to a load as recommended by the engine manufacturer. (2) A complete formal training program shall be provided for all personnel who will be responsible for the maintenance and availability of the diesel generators. The depth and quality of training shall be at least equivalent to that provided by major diesel engine manufacturers' training programs. (3) A preventive maintenance program shall be provided which encompasses investigative testing of components which have a history of repeated malfunctioning and a plan for the replacement of those components which require constant attention and repair with other products of proven reliability. 8.3.1-9 DRAFT Rev. 3 - April 1996 (4) Repair and maintenance procedures shall provide for a final equipment check prior to an actual start-run-load test to ensureassure that all 64 electrical circuits are functional (i.e., fuses in place, no loose wires, test leads removed, etc.) and all valves are in the proper position. The test procedure(s) shall explicitly state that upon satisfactory test completion the diesel generator unit shall be returned to a ready automatic standby service under the control of the control room operator. (5) Except for sensors and other equipment that must be directly mounted on the engine or associated piping, the controls and monitoring instruments shall be installed on a free-standing, floor-mounted panel located on a vibration-free floor area. [NOTE: If the