ML19323J270
| ML19323J270 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 06/10/1980 |
| From: | Kountanis B EG&G, INC. |
| To: | Beard J Office of Nuclear Reactor Regulation |
| References | |
| ESD-6846, NUDOCS 8006190635 | |
| Download: ML19323J270 (3) | |
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- San Ramon Operations 2801 OLD CROW CANYON ROAD. SAN R AMON CA e TEL. (4151837 5381 e MAIL. BOX 204 SAN RAMON. CA 94583 10 June 1980 ESD #6846 Mr. J. T. Beard US Nuclear Regulatory Commission Division of Operating Reactors Plant Systems Branch - FG-416 7920 Norfolk Avenue Bethesda, MD 20014 s
Dear J.T.:
Attached is a request for additional information and drawings on Rancho Seco. The recently-supplied information has been reviewed and was found to be inadequate to complete the Containment Isolation Valve System evaluation.
Please obtain this information as soon as possible so that progress on this task may continue.
If you have any questions, I will be glad to discuss them with you.
/W BILL K0UNTANIS ENGINEERING SPECIALIST BK:1c Attachment cc: EGSG/SRO LLNL NRC J. Cooper M. Dittmore P. Shemanski D. llackett D. Laudenbach B. Mayri M. Nishimurs Xool
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REQUEST FOR ADDITIONAL INFORMATION RANCHO SECO 1.
Provide the following info.aation for the safety injection (SI) system.
a) Electrical 3.tematic drawings (three copies) showing the (SI)
= actuation relays, slave relays, interlocks, actuating contacts and any bypass or reset switches.
Include drawings which show the source of electrical power for the SI system and the status of relay contacts when relays are in the de-energized or shelf condition.
b) PSID and electrical schematics showing the SI system valves, including the fail direction of valves.
2.
Provide the following information for the Engineered Safety Features (ESF).
a) Electrical schematic drawings (tnree copies) showing the ESF system actuating relays, slave relays, interlocks, bypass switches, reset switches, selector switches and initiating contacts.
Include information showing the status of relay contacts when relays are in the de-energi:ed or shelf condition.
b)
If any radiation alarms are associated with the ESF system, please describe the type of alarms and their location.
3.
Referring to drawing E-203, sheet 64C, provide development drawings for switches BLPB-1 and BLPB-2 and for relays RPIV/0C and RPIV/RC.
4.
Referring to drawing E-203, sheet 9, provide the following:
a)
Logic diagram and necessary drawings to show how RCP failure initiates containment isolation.
b) Ifhere is SFV46014 located, and what is its function?
c) Drawings which describe the 637 and 646 relays.
S.
Referring to drawing E-203, sheet 8, provide the following:
a) A description and drawings of the trigger for the SCR which drives the 86 relay.
b) Development drawing for the C2 switch.
c) ' Development drawing for the 52 contacts.
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6.
Provide three copies of each of the following drawings:
a) 6292-N15.03, sheets 6, 16, 26 and 36 b) 6292-N21.01-69 c) 6292-E7.01-56 6
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