ML17055D774
| ML17055D774 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 04/11/1988 |
| From: | Wenzinger E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Mangan C NIAGARA MOHAWK POWER CORP. |
| References | |
| IEB-85-003, IEB-85-3, NUDOCS 8804200221 | |
| Download: ML17055D774 (10) | |
Text
ACCEIZMTED DISN3BUTION DEMONSTRION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR:8804200221 DOC.DATE: 88/04/11 NOTARIZED: NO DOCKET I FACIL:50-220 Nine Mile Point Nuclear Station, Unit 1, Niagara Powe 05000220 AUTH.NAME AUTHOR AFFILIATION WENZINGER,E.C.
Region 1, Ofc of the Director RECIP.NAME RECIPIENT AFFILIATION MANGAN,C.V.
Niagara Mohawk Power Corp.
SUBJECT:
Forwards request for addi info to evaluate valve operability considerations in accordance w/ZE info Bulletin 85-005.
DISTRIBUTION CODE:
IE11D COPIES RECEIVED:LTR ENCL SIZE:
TITLE: Bulletin Response (50 DKT)
NOTES:
RECIPIENT ID CODE/NAME PD1-1 LA BENEDICT,R INTERNAL: AEOD/DOA AEOD/DSP/TPAB NRR/DEST/ADS 7E N~/DOEA/EAB 1 1 RRQREP/PiPB 10 t~iZZs~
02 RGN1 FILE 01 EXTERNAL: LPDR NSIC COPIES LTTR ENCL 1
0 1
1 1
1 1
1 1
1 1
1 1
3.'
1 1
1' 1
1 1
RECIPIENT ID CODE/NAME PD1-1 PD HAUGHEY,M AEOD/DSP NRR/DEST/ADE 8H NRR/DEST/MEB 9H NRR/DOEA/GCB 11 NRR/PMAS/ILRB12 RES/DE/EIB NRC PDR COPIES LTTR ENCL 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 A
S A
TOTAL NUMBER OF COPIES REQUIRED:
LTTR
- 20 ENCL 19
Docket No. 50-220
~1APR Iy, Niagara Mohawk Power Corporation ATTN:
Mr.
C.
V. Mangan Senior Vice President 301 Plainfield Road
- Syracuse, New York 13212 Gentlemen:
Subject:
Additional Information on IEB 85-03 This transmits a request for additional information needed by the NRC to evaluate valve operability considerations in accordance with IEB 85-05, "Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings."
To facilitate NRC review, we are requesting that you supplement your May 16, September 18, 1988 and January 22, 1988 responses to IEB 85-03 with th' information identified in the enclosure to this letter.
Please make the submittal within one month of the date of this letter, if practicable.
If development and submittal of the information will take longer, please make an interim submittal in one month, including the considerations in and timing for providing the remaining information.
Your submittal should be made to the NRC Document Control Desk, with copies to this office and the NRR Division of Operational Events Assessment.
Thank you for your cooperation.
Sincer ely, Sfguad Blrt Edward C. Wenzinger, Chief Projects Branch No
~
2 Division of Reactor Projects
Enclosure:
Request for Additional Information (RAI)
Contact:
R. J. Kiessel, NRR (301) 492-1154 8804200221 880411 PDR ADOCK 05000220 9
DCD OFFICIAL RECORD COPY LTR IEB 85 0005.0.0 04/08/88
f
Niagara Mohawk Power Corporation cc w/encl:
T.
E.
- Lempges, Vice President, Nuclear Generation J.
A. Perry, Vice President, guality Assurance T. Perkins, General Superintendent, Nuclear Generation W. Hansen, Manager Corporate guality Assurance T.
Roman, Unit 1 Station Superintendent J. Aldrich, Unit 1 Superintendent, Operations C.
- Beckham, Manager Nuclear (}uality Assurance Operations W. Drews, Technical Superintendent Troy B. Conner, Jr.
Esquire John W. Keib, Esquire
- Director, Power Division Public Document Room (PDR)
Local Public Document Room (LPDR)
Nuclear Safety Information Center (NSIC)
NRC Resident Inspector State of New York bcc w/encl:
Region I Docket Room (with concurrences)
Management Assistant, DRMA (w/o encl)
DRP Section Chief Robert J.
- Bores, DRSS R. Kiessel,
/ hl 4/
/88 R
P W
ger
~t~i~ss OFFICIAL RECORD COPY LTR IEB 85 0006.0.0 04/08/88
'I 1988 Page 1 of 2
REQUEST FOR ADDITIONAL INFORMATION (RAI) RE:
Review of Responses to Action Item e of IE Bulletin 85-03 Licensee:
Niagara Mohawk Power Corporation 301 Plainfield Road
- Syracuse, NY 13212 Unit(s): Nine Mile Point 1
Date of Response:
05-16-86 09-18-86 01-22-88 Respondent:
C. V. Mangan, Senior Vice President The information provided in your response to Action Item e of IE Bulletin 85-03 was found to be deficient in some areas.
Provide the additional information necessary to resolve the following comments and questions:
- 1. If MOVATS is planned for application to some MOVs which are not included in its data
- base, commit to and describe an alternate:
method for determining the extra thrust necessary to overcome pressure differentials for these valves.
- 2. According to Item 2 on Page 10 of the response dated 09-18-86, outside isolation valves 40-02 and 40-12 of the Core Spray System are locked open with breakers locked out.
Explain why this locked condition is not indicated on Drawing C-18007-C Revision 20, or correct this discrepancy.
- 3. According to Item 4 on Page 12 of the response dated 09-18-86, test valves 40-05 and 40-06 of the Core Spray System are normally closed with their circuit breakers locked out.
Explain why this locked condition is not indicated on Drawing C-18007-C Revision 20, or correct this discrepancy.
- 4. According to Item 3 on Page ll of the response dated 09-18-86, no differential pressure is given for opening suction valves 81'-'1, 81-02, 81-21 and 81-22 of the. Core Spray
- System, These valves are shown normally open on Drawing C-18007-C Revision 20.
As required by Action Item a of the bulletin, assume inadvertent equipment operations and include maximum differential pressure for opening as well as closing these valves for both normal and abnormal events.,
How would suction be ensured if these valves were to be (a) actuated
-inadvertently to the closed position upon intended initiation of core spray or (b) left closed inadvertently?
g ~
Page 2
o 2
RAI for Nine Mile Point 1
- 5. Revise the responses dated 09-18-86 and 01-22-88 to include the Isolation Condenser
- System, as it is the equivalent of RCIC for your plant design.
6.
The proposed program for action items b, c and d of the bulletin is incomplete.
Provide the following datails as a
minimum:
(a) commitment to a training program for setting switches, maintaining valve operators, using signature testing equipment and interpreting signatures, (b) commitment to justify continued operation of a valve determined to be inoperable, (c) description'of a method possibly needed to extrapolate valve stem thrust determined by testing at less than
- maximum, differential pressure, (d) justification of a possible alternative to testing at maximum differential pressure at the plant, (e) consideration of pipe break conditions as required by the
- bulletin, (f) stroke testing when necessary to meet bulletin requirements, and (g) consideration of applicable industry recommendations in the preparation of procedures to ensure maintenance of correct switch settings,
0