ML20062F265

Concludes That Anticipatory Reactor Trip Sys Bypasses Classification as Operating Bypass Is Unacceptable Unless Addl Features to Alert Operator to Remove Bypasses Are Added

ML20062F265
Person / Time
Site:	Davis Besse
Issue date:	07/27/1982
From:	Stolz J Office of Nuclear Reactor Regulation
To:	Crouse R TOLEDO EDISON CO.
References
TASK-2.K.2.10, TASK-TM TAC-45184, NUDOCS 8208120001
Download: ML20062F265 (2)

Text

,

7' JUL 2 71982 & bO w f b DISTRIBUTION: ORB #4 Rdg OELD t

CD6'cket11133 DEisenhut AE0D NRC PDR RIngram IE

. L PDR ADe Agazio ACRS-10 Gray File H0rnstein Docket flo. 50-346 EBlackwood TSpeis FBurrows

!!r. Richard P. Cruuse Vice President, fluclear Toledo Edison Co m any Edison Plaza - Stop 712 300 !!adison Avenue Toledo, Ohio 43652

SUBJECT:

AliTICIPATORY REACTOR TRIP SYSTEM (ARTS) - TEST TRIP BYPASS Our letter of flay 14, 1982 indicated that, based on our review of Toledo Edison Company subnittals related to the ARTS (NUREG Item II.K.2.10),

we concluded that the ARTS design satisfies safety grade criteria and requirements. ly with Secticn 4 of One of these IEEE-279-1971. Your letter of September 8,1981 requirements is to co@(flo. 744) committed to compliance with IEEE-279-1971.

In your letter of July 7,1982 (No. 819), you indicate the need to bypass the main feedwater punp status inputs at certain periods during plant startup and shutdown. The Test Trip Bypasses would be used to block the main feedwater pump trip inputs. The status of these bypasses is indi-l cated at the systen cabinets, the station conputer, and control roon i annunciator and is in accordance with IEE-279 Section 4.13. However, the l bypasses must be manually initiated and cleared. Bypassing would be under i administrative control.

lie have concluded that the use of the Test Trip Bypasses as described classifies them as " operating bypasses", and since they are not auto-natically removed they do not conform to the requirements of IEEE Std. 279 Section 4.12. The bypass indication and annunciation alert the control room operators when the system is put into a bypass condition, but do not alert the operator when conditions exist for removal of the bypass. !!e do not find this acceptable unless additional features are included to alert the operator to remove the bypasses at the appropriate time thereby providing an adequate basis to conclude that automatic bypass removal is not required.

You are requested to identify what additional features exist or will be added to the system to comply with this position or commit to automatic

! bypass renoval a:, required by IEEE-279. Please provide your response no

! later than September 30, 1982.

nce@ ,

8200120001 820727 f 05000g pdginal hi7,ned by B#4:DL f' -0RB #4 John F. 5 tolz, Chief omce > g R.d"Xb

...O "JS't'M h

"" ON at.iw " Reactors"Drc nett"f4'"""" ' '" """""""""

sua m r> .. .. ............... .t ..................... .......uf.v.is.ica of..Licenst.ng . . - - - ~ ~ ~ ~ . - ~ ~ - ~ ~ ~ ~ .

own> ..;.j.3..{ l'f..P.*.l.{........

'~

. . . . . . . . . . . - - . . - ~ ~ . - ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ - - - - - ~ ~ ~ -

enc osu a a OFFICIAL RECORD COPY usom in -mem d{ris'csdE

Toledo Edison Company cc w/ enclosure (s):

Mr. Donald H. Hauser,' Esq. U.S. Nuclear Regulatory Commission The Cleveland Electric Resident 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 Paul M. Smart, Esq.

Fuller & Henry 3C0 lbdison Avenue P. O. Box 2088 Reaional Radiation Representative Toledo, Ohio 43603 EP Region V 230 South Dearborn Street Mr. Robert B. Borsum Chicago, Illinois 60604 Babcock & Wilcox Nuclear Power Generation Division 7910 Woodmont Avenue, Suite 220 Bethesda, Maryland 20814 Ohio Department of Health ATTN: Radiological Health Program Director P. O. Box 118 l President, Board of County Colunbus , Ohio 43216 Commissioners of Ottawa County Port Clinton, Ohio 43452 Attorney General Department of Attorney General 30 East Broad Street Columbus, Ohio 43215 Harold Kahn, Staff Scientist Power Siting Commission 361 East Broad Street Columbus, Ohio 43216 Mr. James G. Keppler, Regional Administrator U. S. Nuclear Regulatory Commission, Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 Mr. Ted Myers Manager, Nuclear Licensing Toledo Edison Company Edison Plaza 300 Madison Avenue Toledo, Ohio 43652 1

1