ML19317G977

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Advises That Info Re Proposed Sys Mods to Provide Reactor Vessel Protection Requested in RW Reid to Be Submitted by 780331
ML19317G977
Person / Time
Site: Rancho Seco
Issue date: 02/28/1978
From: Mattimoe J
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To: Reid R
Office of Nuclear Reactor Regulation
References
NUDOCS 8004020636
Download: ML19317G977 (2)


Text

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..RE3JLATORY INFORMATION DISTRIBUTION SYSTEM (RIDS) 50-312

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REC: HEID R W ORG: MATTIMOE J J DOCDATE: 02/28/78 NRC SACREMENTO MUN UTIL DIST DATE RCVD: 03/07/78!

DOCTYPE: LETTER NOTARIZED: NO COPIES RECEIVED

SUBJECT:

LTR 1 ENCL 0 l

RESPONSE TO NRC"S LTR OF 11/02/77... ADVISING REQUESTED INFO CONCERNING DETAILS ON APPLICANT"S SYSTEM MODIFICATIONS WHICH WILL PROVIDE VESSEL OVERPRESSURE PROTECTION WILL BE SUBMITTED BY 03/31/78.

PLANT NAME: RANCHO SECO (SMUD)

REVIEWER INITIAL:

XJM DISTRIBUTOR INITI AL:

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REACTOR VESSEL OVERPRESSURIZATION DISTRIBUTION PER G.

ZECH 10/21/76.

(DISTRIBUTION CODE A010)

FOR ACTION:

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INTERNAL:

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HANAUER**LTR ONLY(1)

BOSNAK**LTR ONLY(1)

PAWLICKI**LTR ONLY(1)

NOVAK**LTR ONLY(1)

EISENHUT**LTR ONLY(1)

SHAO**LTR ONLY(1)

BAER**LTR ONLY(1)

BUTLER **LTR ONLY(1)

ZECH**LTR ONLY(1)

EXTERNAL:

LPDR'S SACRAMENTO, CA**LTR ONLY(1)

REGION V**LTR ONLY(1)

TIC **LTR ONLY(1)

NSIr:-LTR ONLY(1)

ACRS CAT B**LTR ONLY(16)

DISTRIBUTION:

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THE END 8004020h0S f

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SACRAMENTO MUNICIPAL UTILITY DISTRICT O 6201 S Street, Box 15830, Sacramento, Califomia 95813; (916) 452-3211 February 28, 1978 g-@ElC(fygg,

'%'e Director of Nuclear Reactor Regulation O

Attention:

Mr. Robert W. Reid, Chief s'y Operating Reactors, Branch 4 6

  1. 4,9 7,1918 %

v-U. S. Nuclear Regulatory Commission T

u,g Washington, D. C.

20555 C'l 7

Docket No. 50-312 A

Rancho Seco Nuclear Generating p-Q.

Station, Unit No.1 C:

8

Dear Mr. Reid:

Your letter of November 2,1977 requested additional details on our proposed system modifications which will provide reactor vessel overpressure protection. We infonned you in our letter of December 22, 1977 that we expected to make this submittal by February 28, 1978.

Recent discussions with your staff regarding these modifications have lead to the conclusion that a different modification than previously proposed would be more desirable from the viewpoint of overall plant safety.

This recent change to our design will require additional time to prepare for submittal and will involve some fu'rther discussions with your staff.

We now estimate submitting the items requested by March 31, 1978.

Sincerely yours,

,a, &NA v

J. J. Mattimoe Assistant General Manager and Chief Engineer R oto/ s *

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AN ELECTRIC SYSTEM S E RVIN G MORE THAN 600,000 IN THE HEART OF C A LI FO R N I A