ML20071F461
| ML20071F461 | |
| Person / Time | |
|---|---|
| Site: | Indian Point  |
| Issue date: | 09/29/1978 |
| From: | Berry G POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| 780829, IPO-158, NUDOCS 7810110085 | |
| Download: ML20071F461 (2) | |
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POWER AUTHORITY OF THE STATE OF NEW YORK 10 CoLUMeus CIRCLE NEW YonK. N. Y.10019 (212) 397-6200
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FREDERICK R. CLARK Assis ANT NERAL CEORGE L. ING ALLS CO sE WICE CHAIRM AN WILBUR L. GRONDERG s
RICHARD M. FLYNN A
R ENGINEER NG F.OBERT l. utLLONZ1 JOHN W. BOSTON September 29, 1978 E"*'S "
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IPO-158 mOuAs,g,ugC,R, ANN. JR.
Director of Nuclear Reactor Regulation United States Nuclear Regulatory Commission Washington, D.
C.
20555 Attention:
Mr. Albert Schwencer, Chief Operating Reactors Branch No. 1 Division of Operating Reactors
Subject:
Indian Point 3 Nuclear Power Plant Diesel Genert. tor Alarm and Control Circuitry Docket No. 50-286
Dear Sir:
In response to the questions raised by your letter of August 30, 1978, the Authority submits the following answers:
(1)
The wording on the annunciators alarmed by the diesel lockout relay will be "DG 31 Auto Start Defeated", "DG 32 Auto Start Defeated" and "DG l
33 Auto Start Defeated".
(
(2)
The " Safeguards Equipment Locksd Open" Annunciator j
does not have reflash capability.
3)
The annunciator will remain in the alarmed condition until the abnormal condition is cleared up.
(4)
The loss of DG control will actuate the same annunciators as the DG lockout relay alarm described in Item 1 above.
t l'
The diesel control switch presently brings up the safeguards equipment locked open alarm when the switch is not in the " Auto" position.
Additionally, the alarm circuitry will be modified so L PDIR.
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Director of Nuclear Reactor Regulation U.S.N.R.C. IPO-158 that when the DG control switch is not in an auto position, it will also bring up the same alarms as loss of DG power and DG lockout relay alarm described above.
Very truly yours,
'fif -j ' '4L' f
/Georg'e T. Ber General Manager P
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