ML19344B266
| ML19344B266 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 08/12/1980 |
| From: | Novak T Office of Nuclear Reactor Regulation |
| To: | Andognini G BOSTON EDISON CO. |
| References | |
| NUDOCS 8008260082 | |
| Download: ML19344B266 (3) | |
Text
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NUCLEAR REGULATORY COMMISSION g
WASHINGTON, D. C. 20555
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August 12, 1980 Docket No. 50-293
'Mr. G. Carl Andognini Boston Edison Company M/C NUCLEAR 800 Boylston Street Boston, Massachusetts 02199
Dear'Mr. Andognini:
This request for additional information is in regard to the manual override of the engineered safety features of the containment isolation valves.
Please respond to this request within 30 days of its receipt. Address any questions to your project manager.
Sincerely, Thomas M. Novak, Assistant Director for Operating Reactors Division of Licensing Office of Nuclear Reactor Regulation
Enclosure:
Request for Additional Information cc w/ enc 1:
See next page aE P
8008260 ] S 2.
...s Mr. G. Carl Andognini
- 2 Boston Edison Company 1
cc:
' Mr. Paul J. McGuire.
Pilgrim Station Acting Manager Boston Edison Company RFD #1, Rocky Hill Road Plymouth, Massachusetts 02360 Henry Herrmann, Esquire Massachusetts Wildlife Federation
-151 Tremont Street Boston, Massachusetts 02111 Plymouth Public Library North Street Plymouth, Massachusetts 02360 Resident inspector c/o U. S. NRC P. O. Box 867 Plymouth, Massachusetts 02360 i
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ENCLOSURE PILGRIM 1 REQUEST FOR ADDITIONAL INFORMATION BYPASS AND RESET OF ENGINEERED SAFETY FEATURES 1.
For the CVI system, describe the extent to which the input instrumen-tation channels (including sensors), logic, etc., have been qualified to withstand the environmental and seismic conditions that could be expected to exist at the point of installation during postulated accidents.
2.
For the Control Room Isolation system, describe the extent to which the input instrumentation channels (including sensors), logic, etc.,
have been qualified to withstand the environmental and seismic conditions that could be expected to exist at the point of installation during postulated accidents.
3.
Provide your most recent drawings showing the operation of the CVI and Control Roca Isolation valves during actuation of reset and bypass switches.
4.
Provide d' awings showing the Containment High Radiation input into the CVI system, or describe alternate input to CVI system in place of Containment High Radiation signal.
5.
Switches RPWA/CS and RPWB/CS shown on drawing E-194 have a " Trip Test" pocition which appears to provide a bypass function to the CAC system in such a way that any trip occurring after the switches were placed in " Trip Test" could not cause isolation of the CAC system.
Provide information on the use of these switches and justification for the bypass function.
6.
Provide three copies of each of the following drawings:
a.
E-il8 b.
E-123 Elementary Diagram of Control Rcom Isolation System c.
d.
P&I Diagram of Control Room Isolation System