CEO-88-247, Advises That Util Will Implement Second 10-year Inservice Insp Plan During Cycle 8 Refueling Outage Scheduled to Begin on 890701.List of Remaining Items for First Inservice Insp Encl

Advises That Util Will Implement Second 10-year Inservice Insp Plan During Cycle 8 Refueling Outage Scheduled to Begin on 890701.List of Remaining Items for First Inservice Insp Encl

ML20155E780
Person / Time
Site:	Rancho Seco
Issue date:	10/06/1988
From:	Firlit J SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	Knighton G NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
CEO-88-247, NUDOCS 8810120411
Download: ML20155E780 (3)

Text

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'9 suun SACRAMENTO MUNICIPAL UTluTY DISTRICT C P. O. Box 15830. Sacramento CA 95852 1830.(916) 452 3211 AN ELECTRIC SYSTEM SERVING THE HEART OF CALIFORNIA CE0 88-247 007 o e 1988 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, C-C 20555 Docket No. 50-312 Rancho Seco Nuclear Generating Station License No. DPR-54 ISI PLAN 10-YEAR UPDATE Attention: George Knightor The District stated in J. E. Hard to F. J. Miraglia, Jr. letter dated March 9, 1987, that the second 10-Year ISI Plan would be submitted six months after plant restart. The applicable edition of the ASHE Code was changed by reference in 10 CFR 50.55a as noted in the Federal Register on May 5, 1988.

The District is currently updating the Plan to include the requirements of the recently referenced edition of ASME Section XI. Certain Section XI requirements were discussed with the NRC staff on September 21, 1988, in Rockville, Maryland. The Plan will be finalized, approved by the District, and submitted to the NRC for review and approval by December 31, 1988.

The District will implement the second 10-Year ISI Plan during the Cycle 8 refueling outage scheduled to commence July 1, 1989. Those inspections still remaining from the first 10-Year Plan, all requiring reactor vessel head removal, are identified in the Attachment and will be completed during the Cycle 8 refueling.

The initial 10-Year ISI Plan started with commercial operation on April 18, 1975. A fourteen-month extension was taken due to extended outages of six months or more. This extension was docketed in V. Stello, Jr. to J. J.

Mattimoe letter dated Hay 30, 1978. The District will also take a twenty-seven month extension due to the outage from Dece.,ber 26, 1985 to March 30, 1988. Provision for extension is p*ovided in ASME Section XI, IHA-2400(c). The one year grace period also provided for in IHA-2400(c) results in a final expiration date for the initial 10-year inspection period of Septerrber 18, 1989. p&

3G10120411 GG1006 i )

PDR ADOCK 0U000312 O P DC.

RANCHO SECO NUCLEAR GENERATING STATION O 14440 Tmn Cities Road. Herald. CA 95638 9799;(2091 333 2935

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George Knighton CEO 88-247  !

007 0 6 1989 l Members of your staff with questions requiring additional information or clarification may contact Dave Swank at (209) 333-2935, extension 4920.

Sincerely, De kor l

Joseph F. Firlit Chief Executive Officer i Nuclear ',

cc: A. D'Angelo, NRC, Rancho Seco -

1 J. E. Martin, NRC, Halnut Creek

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• R ATTACHMENT Remainina First 10-Year ISI Insoectioni ASME SECTION XI REASON FOR ITEM NO. DESCRIPTIOS EXAM TYPE POSTPONEMENI_

Bl.3 Final 1/3 Held RV Head To Flange UT Inaccessible with Studs / Nuts in place Bl.8 Final 1/3 RV Studs UT Requires Reactor Vessel Head Stud removal Bl.9 Ligaments Between RV Thraaded UT No access unless ,

Stud Holes Reactor Vessel Head  !

is removed  :

B1.11 One CRDH Bolts & Nuts VISUAL ALARA - With Bl .18 B.1.15 Vessel Internal Surfaces VISUAL No access unless Reactor t!ead is removed Bl.18 3 Helds on One CRDH UT Requires renoval B6.7 Internal Valve Bodies - Three VISUAL Requires disassembly and would entail i defueling for Decay  ;

Heat Orop Leg Valve ,

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