Document: NUREG-0800
Document ID: 988a555f-fdfa-4452-829d-c06654bfbba5
Document Type: srp
Title: Initial Plant Test Program - Design Certification and New License Applicants
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070660618.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.2
CFR Part: 
CFR Title: 

Content:
ring system function during a design basis event. x. Single Failure. The design description should not state that the system meets single failure criteria (SFC). There should not be an ITAAC to verify that the system meets single failure, rather, the system attributes such as independence and physical separation which relate to the SFC should be in ITAAC. xi. Flow Control Valves. In general, the flow control capability of control valves does not have to be tested in ITAAC. However, flow control valves should be shown on the figure if they are required to fail-safe or receive a safety actuation signal. The fail-safe position should be noted on the figure, or discussed in the DD if there is no figure. 14.3-32 March 2007 xii. Pressure Testing of Ventilation Systems. Where ductwork constitutes an extension of the control room boundary for habitability, the ductwork should be pressure tested. C. Style Guidelines for ITAAC i. The first column (design commitment (DC)) should be as close in wording to the design description as possible. ii The middle column of the ITAAC always should contain at least one of the three "Inspection" or "Test" or "Analysis". Sometimes, it should be a combination of the three. iii. Standard pre-ops tests defined in the DCD Tier 2 and Reg Guide 1.68 are not a substitute for ITAAC, however, the results of pre-op tests can be used to satisfy an ITAAC. DCD Tier 2 and Reg Guide 1.68 tests should be examined and tests elevated to ITAAC as necessary. iv. If an ITAAC test is not normally done as part of a pre-operational test, the test methodology should be in Tier 1 or added to the DCD Tier 2 Section 14.2. Any supporting design or analysis issues should be put in the appropriate sections of Tier 2. Reference to the ITAAC may be included in Tier 2. Reference should not be made from Tier 1 to Tier 2 because this effectively makes Tier 2 part of Tier 1. v. Use of the Terms "Test" and "Type Test" in the ITA should be consistent with the Tier 1 Definitions.