Document: NUREG-0800
Document ID: ed02b850-92b8-49b0-bb93-6c21528c5133
Document Type: srp
Title: EMERGENCY DIESEL ENGINE STARTING SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550034.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.6
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Organization responsible for the review of diesel generator support systems Secondary - None I. AREAS OF REVIEW The review of the emergency diesel engine starting system (EDESS) covers system features necessary for reliable emergency diesel engine starting following a loss of offsite power to assure compliance with the requirements of General Design Criteria (GDCs) 2, 4, 5, and 17. The review includes the system air compressors, air dryers, air receivers, devices to crank the diesel engine, valves, piping up to the connection to the engine interface1, filters, and ancillary instrumentation and control systems. The specific areas of review are as follows: 1. The EDESS is reviewed to verify whether: A. Each emergency diesel engine has an independent starting air system with adequate starting capacity. B. The system is designed, fabricated, erected, and tested to acceptable quality standards. 9.5.6-2 Revision 3 - March 2007 C. The system has boundary divisions between safety-related and nonsafety-related sections. D. Failures of any non-seismic Category I structure, system, and component (SSC) will not affect system safety functions adversely. E. System sections important to safety are housed within seismic Category I structures. F. The consequences of a single, active failure in a starting air system will not lead to a loss of more than one diesel generator. G. Instrumentation and control features permit operational testing of the system and assure that normal protective interlocks do not preclude engine operation during emergency conditions. H. The design includes the capability to detect and control system leakage, including isolation of portions of the system for excessive leakage or component malfunction. I. Sufficient space permits inspection, cleaning, maintenance, and repair of the system. 2. Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC). For design certification (DC) and combined license (COL) reviews, the