ML20039A647

Approves 811124 Proposed Resolution of Issues Re Bypass & Reset Capability of ESF Equipment,Per 811117-19 Review. Approval Subj to Outlined Clarification

ML20039A647
Person / Time
Site:	Davis Besse
Issue date:	11/27/1981
From:	Stolz J Office of Nuclear Reactor Regulation
To:	Crouse R TOLEDO EDISON CO.
References
NUDOCS 8112210046
Download: ML20039A647 (3)

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Docket flo. 50-346 JTBeard p' ?q [<

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!!r. Richard P. Crouse C

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Vice President - ?!uclear

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Toledo Edison Company

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Edison Plaza - Stop 712 A

30011adison Avenue Toledo, Ohio 43652

SUBJECT:

BYPASS / RESET CAPABILITY OF EtlGIflEERED SAFETY FEATURES (ESF) l EQUIPl!EllT Ua have reviewed your letter dated floverber 24,1981 (Serial 751) concerning your pmposed resolutions to fiRC concerns related to bypass and reset capa-bility of the ESF equipment. Yourrletter was in response to issues arising from the lloverber 17-19, 1981 review of the ESF equipment. We find re-statenant of the flRC concerns as expressed in your letter is necessary along with a clarification of your proposed resolutions to the issues.

Iten #1 As stated in the flRC generic letter of flovenber 29, 1978 on this natter, a primary criterion is that the nanual overriding of one type of ESF actua-tion signal (for example, high radiation) should not cause the bypassing (blocking) of any other type of ESF actuation signal (for example, low RCS pressure).

Further, by the flRC letter of October 23, 1979, licensees were requested to conform to an Interin Position, pending completion of long-tern reviews. The Interin Position requires, in part,, that hardware rndi-fications have been inplenented such that, presuming any isolation actua-tion signal has been manually overridden, at least one of the automatic safety injection actuation signals is capable of reclosing all containment mmoo purge / vent isolation valves.

If this design capability does not exist, 30 the Interin Position requires that the containment purge / vent isolation N

valves be maintained in the closed position during reactor modes other than

$3 cold shutdown or refueling.

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Response

o" Uc understand that you commit to not opening the purge / vent valves (specifi-g$

cally, CV-5005, CV-5006, CV-5007, CV-5003) in ibdes 1, 2 or 3 until the g;

design conplies with the Interin Position, muu

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The priuary criterion of the flRC long-tem review of this natter is stated j

g in Iten #1 above. This criterion applies not only to automatic actuation signals but also to the systen-level nanual actuation features of the design.

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l Mr. Richard P. Crouse l The flRC requires that the system-level manual actuation features be available at all times for use by the reactor operator regardless of the overridding (" blocking") of any autonatic actuation signal.

Response

We understand that the Special 0Eder attached to your letter dated

!!ovember 24,1981 has been issued to all station personnel by the Station Superintendent, that similar instructions will be nounted on the control board prior to entering flode 3, and that all licensed personnel will be appropriately trained on this matter prior to assuming duties in Modes 1, 2 or 3.

We understand that these actions are temporary measures pending the completion of Iten #3 below Item #3 l

Same as Item #2 above.

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Response

He understand that Toledo Edison commits to appropriate changes such that no override (" block") design feature can result in the inability of the system-level manual actuation features to function. This change is to be fully implemented during the first refueling outage subsequent to January 1, 1983. Uo understand that Toledo Edison requests the opportunity l

to pmsent to the flRC an argument that this long-tem change is not neces-

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sary, in view of the measures of Item #2 above and possibly other considera-tions. The flRC is willing to cooperate in such discussions.

Subject to the clarification above, we find your msponses to be acceptable and thus the prio&to-restart itens are resolved.

Sincemly, 50RIGl W W acci y. srcm" John F. Stolz, Chief Operating Reactors Branch d4 Division of Licensing cc:

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Toledo Edison Company cc w/ enclosure (s):

Mr. Donald H. Hauser, Esq.

U.S. Nuclear Regulatory Commission The Cleveland Electric Residen't Inspector's Office Illuminating Company 5503 N. State Route 2 P. O. Box 5000 Oak Harbor, Ohio 43449 Cleveland, Ohio 44101 Mrs. Julia Baldwin, Librarian Gerald Charnoff, Esq.

Government Documents Collection Shaw, Pittman, Potts William Carlson Library and Trowbridge,.

University of Toledo 1800 M Street, N.W.

2801 W. Bancroft Avenue Washington, D. C.

20036 Toledo, Ohio 43606 Leslie tienry, Esq.

Fuller, Seney, Henry and Hodge 300 Madison Avenue Toledo, Ohio 43604 Regional Radiation Representative EPA Region V Mr. Robert B. Borsum 230 South Dearborn Street Babcock & Wilcox Chicago, Illinois 60604 Nuclear Power Generation Division Suite 220, 7910 Woodmont Avenue Bethesda, Maryland 20814 Ohio Department of Health ATTN: Radiological Health Program Director P. O. Box 118 President, Board of County Columbus, Ohio 43216 Commissioners of Ottawa County Port Clinton, Ohio 43452 Attorney General Department of Attorney General i

30 East Broad Street I

Columbus, Ohio 43215 Harold Kahn, Staff Scientist Power Siting Commission 361 East Broad Street Columbus, Ohio 43216 Mr. Ted Myers Manager, Nuclear Licensing Toledo Edison Company Edison Plaza 300 Madison Avenue Toledo, Ohio 43652