Document: NUREG-0800
Document ID: b4cff877-ab63-46c3-8140-32e309d767a2
Document Type: srp
Title: EMERGENCY DIESEL ENGINE STARTING SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070571.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.6
CFR Part: 
CFR Title: 

Content:
te this review with the other branches' areas of review as stated in subsection I of this SRP section. The primary reviewer obtains and uses such input as required to assure that this review procedure is complete. 1. The SEBECGB reviews the seismic design bases and the EMEB reviews the quality 44 45 and seismic classification as indicated in subsection I of this SRP section. The PSBSPLB assures that essential portions of the EDESS including the isolation valves 46 separating essential and nonessential portions are classified Quality Group C and seismic Category I. Components and system descriptions in the SAR that identify mechanical and performance characteristics are reviewed to verify that the above seismic and quality classifications have been included and that the P&IDs indicate any points of change at the systems and/or systems component interfaces. 2. The reviewer establishes that the EDESS description and piping and instrumentation drawings (P&IDs) clearly delineate all modes of operation and include the means for monitoring, indicating, and controlling receiver air pressure as required by the engine starting service. The P&IDs are reviewed to determine that the receiver(s) has been provided with a pressure gauge, relief valve, drain valve, and automatic means of maintaining the receiver pressure within an allowable range, and suitable low pressure alarms. If there are piping interconnections between the dedicated air start systems, they are reviewed to verify that a failure in the interconnecting piping could not lead to the loss of starting of more than one diesel engine. The building layout drawings are examined to ascertain that sufficient space has been provided around the components to permit inspection. The reviewer verifies that the air starting system meets the specific criteria given in subsection II, item 4 of this SRP section. 3. The SAR is reviewed to assure that each diesel engine air start system has its own compressor and that the compressor