Document: NUREG-0800
Document ID: ecf7a8d4-0097-4a93-8609-630545f03f70
Document Type: srp
Title: REGULATORY TREATMENT OF NONSAFETY SYSTEMS FOR PASSIVE
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1308/ML13081A756.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.3
CFR Part: 
CFR Title: 

Content:
the applicant has met the following acceptance criterion: RTNSS “B” SSCs and supporting equipment will be readily available for connection. Use of on- site equipment and supplies, including mobile equipment, is required in the 4 day post 19.3-8 Draft Rev.0 – June 2013 72-hour period. Offsite equipment and supplies may be relied upon after the seventh day following an accident. 3. The staff will verify that the applicant has met the following acceptance criterion: To ensure that RTNSS “B” SSCs can withstand the effects of a safe shutdown earthquake (SSE) without the loss of capability to perform required functions, the SSCs should be analyzed, designed and constructed using the method and criteria for seismic Category II building structures defined in Chapter 3 of the FSAR. For these systems and components, the design of equipment anchorages must be consistent with the SSE design of equipment anchorages of Seismic Category I items and there should be no spatial interaction with any other non-seismic SSCs that could adversely interact to prevent the functioning of the RTNSS “B” SSCs following an SSE; but no dynamic qualification of active equipment is necessary. 4. The staff will verify that the applicant has met the following acceptance criteria: (1) RTNSS “B” SSCs have been analyzed and designed to withstand the effects of high winds produced in hurricanes and tornadoes, including the effects of sustained winds, gusts, and associated wind-borne missiles and that applicants have used the guidance in RG 1.76 and 1.221 appropriately to choose the design basis wind speeds for RTNSS SSCs, (2) RTNSS “B” SSCs have been analyzed and designed to withstand adverse effects associated with internal hazards, i.e., those created from conditions inside the plant. 5. The staff will verify that the applicant has met the following acceptance criterion: RTNSS “B” SSCs and supporting equipment will be protected from floods and meet the criteria in SRP 2.4 and