ML19308A594
| ML19308A594 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 11/13/1979 |
| From: | Moody D YANKEE ATOMIC ELECTRIC CO. |
| To: | Ziemann D Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19275B548 | List: |
| References | |
| WYR-79-132, NUDOCS 7911200321 | |
| Download: ML19308A594 (2) | |
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m 7so -J oo-o 7 3 9 YAllHEE ATOUIC E!.ECTRIC COMPANY 20 Turnpuke Road Westborough, Massachusetts 01581 ANKEE B.3 2.1 WYR 79-132 November 13, 1979 United States Nuclear Regulatory Co= mission Washington, D. C.
20555 Attention:
D. L. Zie= ann, Chief Operating Reactors Branch #2 Division of Operating Reactors
References:
(a) License No. DPR-3 (Decket No. 50-29)
(b) YAEC Letter (WYR 79-116) to USNRC dated October 9, 1979;
Subject:
Information on Fire Protection System Design
Dear Sir:
Subject:
Additional Information on Fire Protection System Design After staff review of reference (b) above, it appeared that several m
further questions needed to be answered. The information required to answer those questions is included in this letter.
1.
Drawings Copies of conceptual drawings for the suppression systems to be added at Yankee Rowe are attached here.
Please note that they are marked "FOR INFORMATION CNLY".
If these drawings do not fully answer all of the staffs' questions en design, design drawings will be available as system design and installation prog: esses.
The staff can request copies of those that they need at some future date.
2.
System Specific details The answer to several specific questions that the staff had follow here:
Section 3 11 - Fire detection in the containment We indicated that we planned to use a series of RTD's which were installed throughout the vapor container for use in monitoring YC Leak Epte. After further investigation, we have found that these cannot be used effectively to detect a fire in the containment. Therefore, this item new becomes an open one while we investigate further c.ethods for fire detection in che
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containment. We hope to develop an usable, practical tethod within the next two conths.
e m
Unitzd States Nuclcar Regulatory Cccmission N:vemb:r 13, 1979
- e. ' T Attention:
D. L. Ziemann, Chief Paga 2 Section 3 1.5 1.
The sprinkler systems are designed and installed to hTPA
- 13 2.
The deluge systems are designed and installed to NFPA #15.
3 The Auxiliary Heating Boiler System will be designed to a 2
coverage of 0 3 gpm/ft,
Section 3 1.6 1.
The Turbine Lube Oil Tank Foam Suppression System will be designed to hTPA #16.
2.
It will be actuated by Heat Actuated Devices (HAD's).
3 The system will be designed so that foam hits the tank and rolls down into the diked area.
The ends of the tank will be protected.
4.
The design discharge rate for the water roam solution will 2
provide a minimum density of 0.16 gpm/ft.
Section 3 1.7 - Halon System 1.
The system will be designed to NFPA #12A.
2.
The design concentration will be 7% for twenty minutes in the Switchgear Room. The Battery Room concentrations will be 55 for ten minutes.
If you.have any question or comment on the above, please contact us.
Very truly yours, YANKEE ATOMIC ELECTRIC COMPANY D. E. Moody Manager of Operations EAS/dmp Attachment i