ML19331D603

Forwards Request for Addl Info Re Bypass & Reset of Engineered Safety Features.Development Drawings for Switches BLPB-1 & BLPB-2 & Relays Rpiv/Oc & Rpiv/Rc Should Be Provided

ML19331D603
Person / Time
Site:	Rancho Seco
Issue date:	08/14/1980
From:	Novak T Office of Nuclear Reactor Regulation
To:	Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT
References
NUDOCS 8009030344
Download: ML19331D603 (3)

Text

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UNITED STATES

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NUCLEAR REGULATORY COMMISSION D

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August 14, 1980 Docket No. 50-312 Mr. J. J. Mattimoe Assistant General Panager and Chief Engineer Sacramento Municipal Utility District 6201 S Street P. O. Box 15830 Sacramento, California 95813

Dear Mr. Mattimoe:

In our continuing generic review of bypass and reset of engineered safety features, we have identified the need for additional information. This information is identified in the enclosure.

It is requested that you respond to the enclosed request for additional information within 45 days of receipt of this letter.

Sincerely, tovak, Assistant Director for Operating Reactors Division of Licensing

Enclosure:

Request for Additional

'nformation cc w/ enclosure:

See next page i

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Sdb a ento !!unicipal Utility District cc w/ enclosure (s):

Christe;her Ellisen, Esq.

Cavid S. Kaplan, Secretary and Dian Grueuich, Eso.

General Counsel California Energy Commissten s.p tre.*

lill Hcwe Avenue P.

0.~ Scx 15830 Sacramento, California

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Sacrarento, California 95813-Sacranento County Califernia State Office Ecard of Supervisors 500 Pennsylvania nvenue S.-., RC. 4.1 E27 7th Street, Roca 424 Washington, D.C.

20003 Sacramente, California 95314 Docketing and Service Section Office of the Secretary Eusi ess and Municipal Decartmen:

U. S. Nuclear Ee;ula ory Conmissicn Sacraren:o City-County Library Washincton, D.C.

20555 525 I Street

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Sacra ento, California 9581:

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D. O. Ecx 48 1;. acto.,.s eennical a.ssessrent Fair Oaks, California 95528 v1Vislen Cf# ice of Radiatien Pr:grars Dr. Richard F. Cole.

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!'. S. Envircr. rental Protection Agency Mr. Frederick J. Shen Regicn IX Office A cric Safa:y and Licensing Scard

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'.>.r.Ropert 5; Eers un Eiirabeth S. Ecwers, Esq.

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Chairran, A:::ic Safety and

caear ruwer Generation Divisten Licensing Scard Panel Ed

2 422, 7735 Old Gecrge:can Rcad U, S. Nuclear Reculatory Cennissicn

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Snaw, Pittma.n, Potts 1 Troweridge 1500 M Street,ia -

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2003G-Herbert H. Ercwn, Esq.

Mr. Michael R. Eaton Lawrence Cce Lanpher, Esq.

Energy Issues Cccrdinator Hill, Christc;her and Phillips, P. C.

Sierra Club Legislative Office 1900 M St., NW 1107 9th St., Rec: 1020

' ashing:cn, D. C.

20035 Sacrarence, CA 95314 Helen Mabbard

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P. O. Box 53 Sunol, California 9 555 t

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Sacramento Municipal Utility District cc w/ enclosure (s):

I Atomic Safety and Licensing Board Panel U. S. t;u: lear Regulatory Commission k'ashirgton, D.C.

20555 Atomic Safety and Licensing Appeal Eoard Panel U. S. Nuclear Regulatory Commission 1ashington, D.C.

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California Department of Health j

ATTN: Chief,-Environmental Radiation Control Unit Radiological Health.Section 714 P Street, Room 498 Sacramento, Ca?ifornia k

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i Enclosure RANCHO SECO REQUEST FOR ADDITIONAL INFORMATION BYPASS AND RESET OF ENGINEERED SAFETY FEATURES

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For the CVI system, describe the extent to which the input instru-mentation 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.

Referring to drawing E-203, sheet 64C, provide development drawings for switches BLPE-1 and BLP5-2 and for relays RPIV/0C and RPIV/RC.

4.

Referring to drawing E-203, sheet 8, provide the following:

a. ' A description and drawings of the trigger circuitry for the SCR which drives the 86 relay.

b.

Development drawing for the CS switch.

c.

Development drawing for the 52 contacts.

5.

Provide three copies of 6292-E7.01-56.

,