Document: NUREG-0800
Document ID: 919b8fa0-8b11-41bd-9694-2c62120b843b
Document Type: srp
Title: Revision 7 - March 2007
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0636/ML063600403.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6
CFR Part: 
CFR Title: 

Content:
REG 0783. This criterion may be eliminated provided that the SRV discharges are delivered to the suppression pool through a "T" or "X" quencher device previously approved by the staff and described in NUREG-0802 and NUREG-0978. NEDO-30832 concluded that unstable condensation oscillation loads due to suppression pool temperatures approaching the saturation temperature are bounded by air clearing hydrodynamic loads when the "T" or "X" quencher is used. The NRC review and approval of this conclusion is documented in a August 29, 1994 safety evaluation. This NRC safety evaluation also stated that there was no basis for permitting the deletion of local pool temperature requirements when a plant has an Emergency Safety Feature (ESF) pump inlet located at or above the quencher elevation due to concern that steam discharged from the quencher may be ingested at the pump inlet and cause pump cavitation or a water hammer. An analysis based on the plant specific geometry of the quenchers and pump intakes may be used to demonstrate that a steam plume discharged from the quencher will not be ingested by the pump intakes. 10. In meeting the requirements of General Design Criteria 13 and 64, and 10 CFR 50.34(f)(2)(xvii) (for those applicants subject to 10 CFR 50.34(f)), instrumentation capable of operating in the post-accident environment should be provided to monitor the containment atmosphere pressure and temperature and the suppression pool water level and temperature following an accident. Regulatory guidance is contained in Branch Technical Position 7-10, “Guidance on Application of Regulatory Guide 1.97.” 11. In meeting the requirements of 10 CFR 50.34(f)(3)(v)(A)(1), applicants subject to this section should evaluate an accident that releases hydrogen generated from a 100% fuel clad metal-water reaction. The evaluation should demonstrate that the appropriate articles for service level C limits (considering pressure and dead load only), for either concrete or steel