ML20128N164
| ML20128N164 | |
| Person / Time | |
|---|---|
| Site: | 05200003 |
| Issue date: | 10/11/1996 |
| From: | Huffman W NRC (Affiliation Not Assigned) |
| To: | Quay T NRC (Affiliation Not Assigned) |
| References | |
| NUDOCS 9610160311 | |
| Download: ML20128N164 (4) | |
Text
1 October 11, 1996 MEMORANDUM T0: Theodore R. Quay, Director Standardization Project Directorate Division of Reactor Program Management, NRR FROM:
William C. Huffman, Project Manager original signed by:
i Standardization Project Directorate Division of Reactor Program Management, NRR
SUBJECT:
NOTICE OF MEETING WITH WESTINGHOUSE TO DISCUSS AP600 pH CONTROL DATE AND TIME: October 17, 1996 - 8 a.m. - 4:00 p.m.
LOCATION:
Westinghouse Electric Corporation Westinghouse Energy Center Monroeville, Pennsylvania PURPOSE:
Discuss design details and functional analysis of the Westinghouse pH control system.
See attached agenda.
PARTICIPANTS *:
hRC QML WESTINGHOUSE J. Lee E. Beahm T. Schulz B. Huffman C. Weber B. Hammersly J. Butler, et al.
Docket No.52-003
Attachment:
Proposed Agenda cc w/ attachment:
See next page
- Meetings between the NRC technical staff and applicants or licensees are open for interested members of the public, petitioners, intervenors, or other 4
parties to attend as observers pursuant to " Commission Policy Statement on Staff Meeting Open to the Public," 59 Federal deaister 48344, 9/20/94.
However, portions of this meeting may be closed to protect Westinghouse proprietary information. Members of the public who wish to attend should contact me a.t (301) 415-1141.
d)
DISTRIBUTION:
V Docket File PDST R/F FMiraglia, 0-12 G18 PUBLIC RPZimmerman, 0-12 G18 ACThadani, 0-12 G18 I
TTMartin DMathews TJKenyon g
DTJackson WCHuffman JMSebrosky WDean, 0-17 G21 JMoore, 0-15 B18 OPA (e-mail)
EJordan, T-4 D18 PMNS (e-mail)
ACRS (11)
MSnodderly, 0-8 H7 JLee, 0-10 D4 JKudrick, 0-8 H7 REmch, 0-10 D4 CBerlinger, 0-8 H7 CMiller, 0-10 D4 N C FILE CENTER COPY DOCUMENT NAME: A:0CT17-PH.N0T Ts enceive a copy of this document,indcate in the boa: "C" = Copy without attachment / enclosure
'E' s Copy with attachment / enclosure
- N" = No copy 0FFICE PM:PDST:0RPV D:PDST:DRPM
'l l
NAME WCHuffman:6h TRQuay 47M DATE 10//l /96
' 10/tt/96 i
"FICIAL RECORD COPY 9610160311 961011 PDR ADOCK 05200003 A
}
i Westinghouse Electric Corporation Docket No.52-003 i
cc: Mr. Nicholas J. Liparulo, Manager Mr. Frank A. Ross
}'
Nuclear Safety and Regulatory Analysis U.S. Department of Energy, NE-42 i
Nuclear and Advanced Technology Division Office of LWR Safety and Technology Westinghouse Electric Corporation 19901 Germantown Road i
P.O. Box 355 Germantown, MD 20874 Pittsburgh, PA 15230 l
Mr. Ronald Simard, Director i
Mr. B. A. McIntyre Advanced Reactor Program j
Advanced Plant Safety & Licensing Nuclear Energy Institute Westinghouse Electric Corporation 1776 Eye Street, N.W.
j Energy Systems Business Unit Suite 300 Box 355 Washington, DC 20006-3706 Pittsberg5, PA 15230 1
Ms. Lynn Connor Mr. John C. Butler Doc-Search Associates Advanced Plant Safety & Licensing Post Office Box 34 Westinghouse Electric Corporation Cabin John, MD 20818 Energy Systems Business Unit Box 355 Mr. James E. Quinn, Projects Manager Pittsburgh, PA 15230 LHR and SBWR Programs GE Nuclear Energy Mr. M. D. Beaumont 175 Curtner Avenue, M/C 165 Nuclear and Advanced Technology Division San Jose, CA 95125 Westinghouse Electric Corporation One Montrose Metro Mr. Robert H. Buchholz 11921 Rockville Pike GE Nuclear Enercy Suite 350 175 Curtner Avenue, MC-781 Rockville, MD 20852 San Jose, CA 95125 Mr. Sterling Franks Barton Z. Cowan, Esq.
U.S. Department of Energy Eckert Seamans Cherin & Mellott NE-50 600 Grant Street 42nd Floor 19901 Germantown Road Pittsburgh, PA 15219 Germantown, MD 20874 Mr. Ed Rodwell, Manager Mr. S. M. Modro PWR Design Certification Nuclear Systems Analysis Technologies Electric Power Research Institute Lockheed Idaho Technologies Company 3412 Hillview Avenue Post Office Box 1625 Palo Alto, CA 94303 Idaho Falls, ID 83415 Mr. Charles Thompson, Nuclear Engineer AP600 Certification NE-50 19901 Germantown Road Germantown, MD 20874
1 9
WESTINGHOUSE /NRC MEETING ON AP600 pH CONTROL OCTOBER 17, 1996 Pronosed Agenda 1.
Describe the methodology to be used for the final mixing analyses including how pH influencing materials and pH effects from source term and other radiation will be accounted for. Also, discuss the DBA/LOCA scenario to be used by Westinghouse for the AP600 containment water pH control system?
2.
Provide a physical overview of the anticipated mixing process of trisodium phosphate (TSP) within the lower containment volumes, reactor vessel and piping and IRWST. Also describe the floodup progression, steam and water condensate pathways. Discuss how the iodine postulated to exist in the containment will come in contact and interact with alkaline water. Other consideration to discuss:
a.
Removal and transport of iodine from containment atmosphere.
b.
Possible concentration of iodine in the IRWST and IRWST pH control.
c.
Possible concentration of TSP in the reactor vessel due to long term recirculation boiloff and condensate return processes.
3.
How much margin exists within the pH control system design to account for severe accident which include ex-vessel and late in-vessel fission product releases.
4.
Quick Review of past Westinghouse responses to the following RAIs for its validity due to the recent design changes:
RAI Nos.
470.17 NTD-NRC-95-4413 (March 7, 1995) 470.18 NTD-NRC-95-4413 (March 7, 1995) 470.19 NTD-NRC-95-4413 (March 7, 1995) 470.20 i
470.21 NTD-NRC-95-4431 (April 7, 1995) 470.22 470.28 NTD-NRC-96-4810 (August 30,1996) 470.29 NTD-NRC-96-4810 (August 30,1996) 5.
Discussion on Westinghouse progress in responding to RAls 470.30 and 470.31 6.
Volumes and temperatures (liquid and gas) in each control volume as a function of time.
7.
Flow rates (ligeid and gas) between control volumes as a function of time. Inter-compartmental flows should not include counter-current (i.e., buoyancy-driven) flows.
Attachment L---
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3 3
4 8.
Distribution of nuclide groups in each control volumes as a function of j
time i
9.
Source rate of cesium iodine into the containment (mol/sec, kg/hr, etc.)
4 10.
To the extent currently known, discuss the location, amount, chemical form of all pH-influencing materials.
j 11.
Discussion on design and placement of the pH control chemical baskets.
J l
12.
Discussion on assumptions on water inventory and boron concentrations.
5 13.
Provide information on the physical stability (such a slumping, cakiag, and solubility) of granulated TSP as a function of age.
a 1
i 14.
. Provide information on the replacement / replenishment of the TSP is necessary (Including discussions of under what circumstances Westin-j
~ house anticipates that TSP replenishment may be necessary).
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15.
Discuss surveillance and proof of functionality (e.g., sampling, testing, other monitoring).
i 16.
General discussions.
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