Document: NUREG-0800
Document ID: f430fab5-dea3-4bc8-99ea-3bdf995735cd
Document Type: srp
Title: COMPRESSED AIR SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350551.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.3.1
CFR Part: 
CFR Title: 

Content:
3. The reviewer verifies that the system has been designed so that system function will be maintained, as required, in the event of adverse environ- mental phenomena, certain pipe breaks, or a loss of offsite power. The reviewer evaluates the system using engineering judgment and the results of failure modes and effects analyses to determine that: a. The failure of nonessential portions of the system or of other systems not designed to seismic Category I standards and located close to essential portions of the SRCAS, or of nonseismic Category I struc- tures that house, support, or are close to the SRCAS, will not pre- clude operation of the essential portions of the SRCAS. Statements in the SAR to the effect that the above conditions are met are acceptable. b. The essential portions of the SRCAS are protected from the effects of floods, hurricanes, tornadoes, and internally or externally generated-missiles. The location and the design of the system, struc- tures, or cubicles are reviewed to determine that the degree of pro- tection is adequate. A statement to the effect that the system is located in a seismic Category I structure that is tornado missile and flood protected, or that components of the system will be located in individual cubicles or rooms that will withstand the effects of tornado winds, flooding, and missiles is acceptable. The details of this portion of the review are contained in the Chapter 3 SRP sections. c. An adequate SRCAS air supply source is available, considering the loss of offsite power. If the minimum performance requirements stated in the SAR are met, the system design will be acceptable assum- ing a concurrent failure of a single active component, including an emergency power source. Statements in the SAR and the results of failure modes and effects analyses are considered to ensure that the system meets these requirements. These will be acceptable verifica- tion of system functional reliability. 4. The descriptive information, P&IDs,