ML17054A620
| ML17054A620 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 03/19/1984 |
| From: | Vassallo D Office of Nuclear Reactor Regulation |
| To: | Rhode G NIAGARA MOHAWK POWER CORP. |
| Shared Package | |
| ML17054A621 | List: |
| References | |
| NUDOCS 8404180022 | |
| Download: ML17054A620 (6) | |
Text
March 19, 1984 Docket No. 50-220 Mr. G.
K. Rhode Senior Vice President Niagara Mohawk Power Corporation 300 Erie Boulevard West
- Syracuse, New York 13202
Dear Mr. Rhode:
SUBJECT:
SAFETY EVALUATION, CONTAINMENT PURGING/VENTING DURING NORMAL PLANT OPERATION, CONTAINMENT SYSTEMS ASPECTS (MPA B-24)
Re:
Nine Mile Point Nuclear Station, Unit No.
1 We have completed our review of the containment systems aspects of Multi-Plant Action (MPA) Item B-24 at Nine Mile Point Unit 1.
Based on the findings contained in our previous Safety Evaluation (SE) dated December 9, 1981 and our current evaluation of the open items identified in the December 9,
1981 SE, we consider this issue resolved pending your formal confirmation for the two following items:
Informal acceptance of the staff recommendations has been received by telecon with your staff on February 1, 1984:
1)
The maximum valve closure times for containment purge valves be limited to 15 seconds or less following a LOCA.
Instrument delay times as well as valve disc traveling time should be considered in the overall response time.
2)
A leak test be performed to demonstrate that purge/vent isolation valve seal material has not deteriorated.
The leak testing should be performed every three months or within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> of each usage of the purge/vent system (for operating conditions above cold shutdown) with a maximum interval of six months between leak tests.
As a part of your formal confirmation, please provide your implementation schedule for these items.
Any changes to the Technical Specifications will remain open until the last remaining part of MPA B-24, Environmental gualification, is completed.
Technical Specifications should be submitted at that time and will be the subject of separate correspondence.
8404i80022 8403i9 PDR ADOCK 05000220, P--
'DR'
I f
Mr. G.
K. Rhode The supporting Safety Evaluation is enclosed.
Sincerely, Original signed by/
Enclosure:
As stated cc w/enclosure:
See next page DISTRIBUTION NRC PDR Local PDR ORB¹2 Reading DEisenhut OELD ELJordan JNGrace SNorris RHermann ACRS (10)
Gray File g+CVES py+coS Domenic B. Vassallo, Chief Operating Reactors Branch ¹2 Division of Licensing DL: RB¹2 DL:
2 SN rris:ajs RHerRann 03/If/84 03//g/84 DL:ORB¹2 DYassallo 03~/84
Mr. G.. K. Rhode Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station, Unit No.
1 CC:
Troy B. Conner, Jr.,
Esq.
Conner
& Wetterhahn Suite 1050 1747 Pennsylvania
- Avenue, N.
W.
Washington, D. C.
20006 Mr. Robert P. Jones, Supervisor Town of Scriba R.
D. g4
- Oswego, New York, 13126
\\
Niagara Mohawk Power Corporation ATTN:
Mr. Thomas Perkins Plant Superintendent Nine Mile Point Nuclear Station Post Office Box 32
~ l
- Lycoming, New York 13093 U. S. Environmental Protection Agency Region II Office Regional Radiation Representative 26 Federal Plaza New York, New York 10007 Resident Inspector U. S. Nuclear Regulatory Commission Post Office Box 126
- Lycoming, New York 13093 John W. Keib, Esquire Niagara Mohawk Power Corpoi ation 300 Erie Boulevard West
- Syracuse, New York 13202 Thomas A. Hurley Regional Administrator Region I Office U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 Mr. Jay Dunkleberger Division of Policy Analysis and Planning New York State Energy Office Agency Building 2, Empire State Plaza
- Albany, New York 12223
T