Document: NUREG-0800
Document ID: 6cd85972-0d5c-413b-9587-fbbfd5521c9f
Document Type: srp
Title: COMPRESSED AIR SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070525.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.3.1
CFR Part: 
CFR Title: 

Content:
Section 8.4 (proposed). If the capability and capacity of the ICAS are sufficient with respect to the plant's ability to withstand or cope with (for the specified duration), as applicable, and recover from a station blackout event, the system will be deemed acceptable. If the capability or capacity of the ICAS is not sufficient, additional guidance is provided in Regulatory Guide 1.155, Position 3.3.3 and Position 3.5.87 5. The reviewer verifies that an adequate maintenance, periodic testing, and surveillance program is planned to ensure continuous reliable functioning of the SRCASCAS. The 88 reviewer also verifies that adequate design provisions exist to permit the appropriate periodic pressure, leakage, air quality, and functional testing of the ICAS to assure the structural integrity, leak tight ability, operability and performance of the active components, and capability of the system to function as intended during design basis events, loss of offsite power, or station blackout.89 4.6. The descriptive information, P&IDs, SRCASICAS drawings, and failure modes and effects analyses in the SAR are reviewed to ensure that the SRCASICAS portion of the 90 compressed air system will function following design basis accidents assuming a concurrent single active failure. The reviewer evaluates the information presented in the SAR to determine the ability of required components to function, traces the availability of these components on system drawings, and checks that the SAR contains verification that minimum compressed air flow requirements are met for each degraded situation for the required time spansduration. In addition, the reviewer verifies air operated 91 components will function as intended during design basis events, loss of offsite power, or station blackout by verifying the following: a. The functional design of the ICAS, including air or nitrogen accumulators, is in accordance with its intended function. b. Air-operated component failure positions are correct