Document: NUREG-0800
Document ID: a4637484-a66d-4066-b2e7-77b0ea7d3187
Document Type: srp
Title: 2.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070601.pdf
Revision Date: 2023-06
Chapter: 10
Section ID: 10.4.9.16
CFR Part: 
CFR Title: 

Content:
w is transferred from the auxiliary feedwater nozzle to the main feedwater nozzle. The test shall be performed*% of power by using pumping feedwater through the auxiliary feedwater (top) nozzle at the lowest feedwater temperature that the plant standard operating procedure (SOP) allows and then switching the feedwater at that temperature from the auxiliary feedwater nozzle to the DRAFT Rev. 4 - April 1996 10.4.7-14 main feedwater (bottom) nozzle by following the SOP, and. submit Submit the results 101 of such tests. Once Through Steam Generator (OTSG) Designs a. Provide auxiliary feedwater to the steam generator through an externally mounted supply top discharge header. b. Perform tests acceptable to NRC to verify that unacceptable feedwater hammer will not occur using the plant operating procedures for normal and emergency restoration of steam generator water level following loss of normal feedwater. Provide the procedures for these tests for approval before conducting the tests, and submit the results of such tests. REFERENCES (1) Block, J. A., et al., "An Evaluation of PWR Steam Generator Water Hammer," NUREG-0291, June 1977. (2) Chapman, R. L., et al., "Compilation of Data Concerning Known and Suspected Water Hammer Events in Nuclear Power Plants," NUREG/CR-2059, May 1982. (3) Anderson, N. and Han, J. T., "Prevention and Mitigation of Steam Generator Water Hammer Events in PWR Plants," NUREG-0918, December 1982. __________ * The power level at which feedwater flow is transferred from the auxiliary feedwater nozzle to the main feedwater nozzle. __________ SRP Draft Section 10.4.7 Attachment A - Proposed Changes in Order of Occurrence 10.4.7-15 DRAFT Rev. 4 - April 1996 Item numbers in the following table correspond to superscript numbers in the redline/strikeout copy of the draft SRP section. Item Source Description 1. Current PRB name and abbreviation Changed PRB to Plant Systems Branch(SPLB). 2. SRP-UDP format item Added secondary review branch per guidance