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:
systems, and components important 54 to safety being designed, fabricated, and tested to quality standards commensurate with the importance of the safety functions to be performed. Acceptance is based on meeting ANSI MC 11.1-1976 (ISA S7.3)ANSI/ISA-S7.3-R1981 (Reference 9) , as related to 55 minimum instrument air quality standards, meeting the guidance of Regulatory Guide 1.68.3 as related to testing of instrument air system . 56 2. General Design Criterion 2, as related to the safety-related compressed air system being capable of withstanding the effects of earthquakes. Acceptance is based on meeting the guidance of Regulatory Guide 1.29, Position C-1, if any portion is deemed to be safety-related, and Position C-2, for nonsafety-related functions.Positions C-1 and C-2, as related to seismic classification.57 3. General Design Criterion 5, as related to the capability of shared systems and components important to safety to perform required safety functions.as it relates to the sharing of structures, systems, and components important to safety. Acceptance is based on showing that the requirements set forth herein are met for compressed air systems shared among multiple units.58 DRAFT Rev. 2 - April 1996 9.3.1-6 4. 10 CFR Part 50, §50.63, "Loss of all alternating current power", as is relates to the ability of a plant to withstand for a specified duration and recover from a station blackout. Acceptance is based on meeting Regulatory Guide 1.155 as it relates to the design of the compressed air system.59 Technical Rationale: The technical rationale for application of the above acceptance criteria to the compressed system is discussed in the following paragraphs.60 There may be cases where compressed air systems are divided into subsystems that provide control air to safety-related components and systems and subsystems that provide compressed air to non-safety-related components and systems. For the purposes of these technical rationales, those portions of compressed