Document: NUREG-0800
Document ID: 76205ba0-6d0f-463f-b38b-37cc41a9b7ec
Document Type: srp
Title: COMPRESSED AIR SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550044.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.3.1
CFR Part: 
CFR Title: 

Content:
a component or the loss of a compressed air source prevents any safety-related system, subsystem, or device from performing safety-related functions. 5. The ICAS design is reviewed for the following: A. Capability to isolate part of a system or components in case of component malfunction. B. Instrumentation and control features to determine and verify that the system operates in a correct mode (e.g., valve position indication, pressure). C. Capability of the system to function in adverse environmental phenomena, abnormal operation including station blackout, or accident conditions (e.g., a loss-of-coolant accident or main steam line break concurrent with loss of offsite power). The duration considered for such events/conditions includes the time interval from the onset until the ICAS safety function is no longer required. D. Capability of the system (including interconnected systems designed for backup capability to the ICAS) to supply clean, dry, oil-free instrument air. E. Provisions for periodic testing of the quality of the air delivered to the ICAS components. F. Provisions for periodic pressure, leakage, and functional testing of the safety-related ICAS portions. G. Provisions for adequate inventory and quality for performance of ICAS functions with equipment out of service for maintenance or repair. H. The potential for radiological contamination of the ICAS and, if applicable, provisions for detection of leakage from radioactive systems to the ICAS and preclusion of releases to the environment. I. The air quality and over-pressure protection from air or nitrogen accumulators or nitrogen systems for pressurized-water reactor (PWR) primary and secondary system power-operated relief valves (PORVs) and boiling-water reactor (BWR) safety relief valves (SRVs). J. Provisions for periodic pressure and leakage testing of the accumulators for PWR PORVs or BWR SRVs. 6. Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC). For design certification (DC) and