Document: NUREG-0800
Document ID: a20ea81d-33c2-4a0c-a3b4-216d45d6fccd
Document Type: srp
Title: FEEDWATER SYSTEM PIPE.BREAKS INSIDE AND OUTSIDE CONTAINMENT (PWR)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350148.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.2.8
CFR Part: 
CFR Title: 

Content:
lant pump trip during ECCS initiation is reviewed to assure conformance to the TMI Action Item II.K.3.5 (References 6 and 7). Should tripping of the reactor coolant pumps require manual action, delays in operator action must be assessed. The reliability and integrity of the reactor coolant pump seals during loss of alternating-current power and loss of coolant to the'seals (i.e., resulting from containment isolation) are reviewed to assure conformance to the TMI Action Items II.K.2.16, II.K.3.25, and II.K.3.40 (References 6 and 7). IV. EVALUATION FINDINGS The reviewer verifies that the SAR contains sufficient information and his review supports the following kinds of statements and conclusions, which should be included in the staff's safety evaluation report: The staff concludes that the consequences of postulated feedwater line breaks meet the requirements set forth in the General Design Criteria 27, 28, 31, and 35 regarding control rod insertability and core coolability, 10 CFR Part 100 guidelines regarding radiological dose at the site boundary, and applicable TMI Action Plan Items. This conclusion is based upon the following: 15.2.8-6 Rev. 1 - July 1981. (a) The applicant has met the requirements of GDC 27 and 28 by demonstrating that the resultant fuel damage was minimal, control rod insertability would be maintained and that no loss of core cooling capability resulted. The minimum departure from nucleate boiling ratio (MDNBR) experienced by any fuel rod was resulting in __% of the rods experiencing clad performiiFafon. (b) The applicant has met the requirements of GDC 31 with respect to demonstrating the integrity of the primary system boundary to with- stand the postulated accident. (c) The applicant has met the requirements of GDC 35 with respect to demonstrating the adequacy of the emergency cooling systems to provide abundant core cooling and reactivity control (via boron injection). (d) The analyses and effects of feedwater line break accidents inside and