ML19344E966
| ML19344E966 | |
| Person / Time | |
|---|---|
| Site: | Indian Point  |
| Issue date: | 08/29/1980 |
| From: | Varga S Office of Nuclear Reactor Regulation |
| To: | Berry G POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK |
| References | |
| NUDOCS 8009120181 | |
| Download: ML19344E966 (3) | |
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. UNITED STATES
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g NUCLEAR REGULA*iORY COMMISSION 1 p.-
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WASMINGTON, O. C. 20655 e
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3 August 29, 1980 i
i Docket No. 50-286 d
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i Mr. George T. Berry, President and Chief Operating Officer Power Authority of the State of New York 10 Columbus Circle
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Dear Mr. Berry:
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Enclosed is a request for additional information that we need to complete our review of the electrical override / bypass aspects of the engineered s
Safety Features for Indian Point 3.
Please provide the additional information within 30 days of receipt of this letter.
Sincerely, clt.k.b 4
tev !n A. Varga, Chief Operating Reactors Branch #1 Division of Licensing
Enclosure:
Request for Additional Information cc: w/ enclosure See next page e
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Mr. George T. Berry I
Power Authority of the State of New York
,2-August 29, 1980 s
cc: White Plains Public Library Mr. J. P. Bayne, Senior Vice Pres.
i 100 Martine Avenue Power Authority of the State
.i White Plains, New York 10601 of New York i
10 Columbus Circle
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-Mr. Charles M. Pratt New York, New York 10019
.i Assistant General Counsel Power Authority of the ttr. S. S. Zulla, Acting
-State of New York Resident Manager
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10 Columbus Circle Indian Point 3 Nuclear Power Plant New York, New York 10019 P. O. Box 215 Buchanan, New York 10511 Ms. Ellyn Weiss Sheldon, Harmon and Weiss i
1725 I Street, N.W., Suite 505 Washington, D. C.
20006 E
Dr. Lawrence D. Quarles i
Apartment 51 Kendal at Longwood Kennett Square, Pennsylvania 19348 I
Mr. George M. Wilverding
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Manager - Nuclear Licensing Power Authority of the State of New York 10 Columbus Circle New York, New York 10019 Mr. P. W. Lyon, Senior Vice President - Nuclear Generation Power Authority of the State of New York 10 Columbus Circle New York, New York 10019 Mr. J. W. Blake, Ph.D., Director Environmental Progrars Power Authority of the State nf New York 10 Columbus Circle New York, New York 10019
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Theodore A. Rebelowski Resident Inspector Indian Point Nuclear Generating
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U. S. Nuclear Regulatory Commission Post Office Sox 38 Suchanan, New York 10511
-O Enclosure REQUEST FOR ADDITIONAL INFORMATION 1.
Are all components of the Containment Ventilation Isolation (CVI),
Containment Isolation (CI), Safety Injection (SI) and Containment Spray (CS) systems safety grade from the sensors to final electrical control device? In particular, are these components environmentally and seismically qualified for the conditions that could be expected after p*ostulated accidents? (It appears, for example, that the radiation monitoring instrumentation for the CVI system is not safety grade).
2.
It appears that if the CVI reset pushbutton is depressed while an automatic safety signal is present, the system is placed in a bypass condition. In this condition all other safety signal inputs, except high radiation / particulate, are blocked. Describe your proposed-modification to correct this problem.
3.
It appears that overriding the automatic safety signal for the CS and CI Phase A systems also blocks manual actuation and other automatic safety signals. You have already been asked by letter of August 20, 1980 to propose a modification to correct the blocking of the manual actuation. In addition, describe your proposed modification to correct the blocking of other automatic safety signals.
If other Engineered Safety Features (ESF) have similar problems, propose modifications to correct them.
4.
Simple, unprotected pushbuttons, which could be inadvertently pushed, are used for reset of CVI and other ESF systems. Describe your proposed modification that will provide sufficient physical features
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for these switches to facilitate adequate administrative controls.
5.
Overrides of the CVI, CI and CS systems initiated by the reset switches are not annunciated. Describe your proposed modification that will provide system-level annunciations for each ESF impacted when any override is active.
6.
It appears that the CS valves change position upon overriding or l
resetting the system. Provide drawings of the CS valve circuitry, and describe your proposed modification to prevent these valves from changing position upon override or reset of the system.
7.
It appears that both an SI signal and a containment high-high pressure signal are required to automatically actuate the CS system.
The SI signal may have been reset before the containment high-high pressure set point is reached, precluding automatic actuation of the CS system. Describe your proposed modification that will allow auto-matic actuation of this CS system whenever it is required.
8.
Provide drawings showing the circuitry which operates relay 42A/CBPF.
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