ML20247E769

From kanterella
Jump to navigation Jump to search

Forwards Status Rept Summarizing Concerns Re Proposed Change 105 to Tech Specs Covering Reactor Protection Sys Power Supply.Tech Specs Required to Complement Design Mods Made to Protect Reactor Protection Sys from Abnormal Voltage
ML20247E769
Person / Time
Site: Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date: 03/24/1989
From: Fairtile M
Office of Nuclear Reactor Regulation
To: Capstick R
VERMONT YANKEE NUCLEAR POWER CORP.
References
TAC-65410, NUDOCS 8904030235
Download: ML20247E769 (5)
v • d • e


Text

{{#Wiki_filter:- - - n u e .. 

                                                                                                         .+
            .'        y-                         -r                                                                                ,
                  ;                   ,                         i
  ~

Docket ~No. 50 271 1 MM '2 41989 L t X [ . i i Mr. R. W. Capstick,' Licensing' Engineer : Vermont Yankee Nuclear Power Corporation r

580' Main' Street.

Bolton,-Me::achusetts 01740-1398 .

Dear.Mr. Capstick:

SUBJECT:

PROPOSED CHANGE NO.105: RPS POWER SUPPLY TECilNICAL SPECIFICATIONS (TACNO.65410)- By letter dated March 4,1985 you proposed changes to the . Vermont . Yankee Technical' Specifications related to the Vetacnt Yankee Reactor Prote'ction System power _ supply. -The Technical Specifications changes were requested by 

                                  .the staff.'in a~ letter'to you dated June 27,,1984 which approved Reactor
                                   ' Protection System power monitoring system design modifications.-

During a number of telephone discussions we have identified to you problems related to yourfproposal.1 The enclosed status report, which we discussed with Jyou'on March 21, 1989,- summarizes our concerns. You are requested to provide either proposed Technical Specifications or supporting information which 

                                  . resolve the concerns as soon as possible but no later than sixty. days from ~                ,

the-date.of.this letter. Sincerely, UTIgnalSIgned Gyg Morton B. Fairtile, Project Manager Project Directorate I-3 Division of Reactor Projects I/II

Enclosure:

As stated 

                                  -cc w/ encl.: See'next page DISTRIBUTION: 90theti M M 7 NRC& Local PDRs, PDI-3 r/f, Glainas, BBoger, kRushbrook,MFairtile,OGC,-EJordan,BGrimes,ACRS(10),RWessman,JWiggins,Rgn.I

( [VER. YANK. TAC 65410 RPS POW.SUP] 

                                                                                         *See previous concurrence OFC :PDI-3;                                            :PDI-3         :DIR/PDI-3 :             :            :            :

NAME :*MRushbrook :*MFairtile:mw:*RWessman :  :  :  : : 

 'DATE :3/23/89                                          :3/24/89       :3/24/89   :             :            :            :

0FFICIAL RECORD COPY 9F gans 2%' P y "

g .: e,. E Q;~ LMr. R. W..Capstick . 

                                                   -Vermont: Yankee Nuclear Power Corporation                    Vennont Yankee Nuclear Power Station       I cc:
Mr. ' J. Gary l Weigand .
                                                                                                               . W. P._ Murphy, Vice President President & Chief Executive Officer                    .and Manager of Operations:
                                                     .VermontJYankee Nuclear-Power Corp.:                        Vermont Yankee Nuclear Power Corp..

R.D.-5,: Box 169- R.D. 5 -Box 169 

                                                                                                                                                        ~

Ferry Road . Ferry Road-Brattleboro, Vermont' 05301 Brattleboro, Vermont . 05301 - Mr. John DeVincentis, Vice' President Mr. George Sterzinger,- Connissioner ' Yankee Atomic Electric Company- Vermont Department of Public. Service - 580 Main. Street 120 State Street,- 3rd Floor Bolton, Massachusetts. 01740-1398 Montpelier Vermont 05602-New Englan'd_ Coalition on Nuclear' Public Service Board 

                                                                   -Pollution                                    State of Vermont Hill:and Dale Farm                                       120 State: Street-
                                                 'R.D. 2, Box 223                                               Montpelier, Vermont. 05602-Putney, Vennont. 05346 Vermont Public Interest Research
                                                                   -Group, Inc.                                  G. Dean Weyman 43 State Street                                   .

Chairman, Board of Selectman Montpelier, Vermont- 05602 Post Office Box'116 Vernon,. Vermont 05354 

   .L William Russell,' Regional Administrator                   Raymond N. McCandless Region..I Office                                         Vermont Division of.0 occupational-U.S. Nuclear Regulatory Commission                          and Radiological Health' 475 Allendale Road                                       Administration Building
                                               , King 'of Prussia, Pennsylvania 19406                           Montpelier,--Vermont 05602-Mr. R. W. Capstick                                        Honorab1'e John J.'Easton Vermont Yankee Nuclear                                    Attorney General Power Corporation                                         State of Vennont
                                                .580 Main St.                                                    109 State Street Bolton, Massachusetts 01740-1398                          Montpelier, Vermont 05602 R. K. Gad.III~

Ropes & Gray Conner & Wetterhahn, P.C. 225 Franklin Street Suite 1050

Boston, Massachusetts 02110 1747 Pennsylvania Avenue, N.W.
 ;                                                                                                              Washington, D.C. 20006 L

                        --.-                      7 R                                                                                                                                                      !

i 

               }

I[ 1- Vermont Yankee.. Nuclear Power - Vermont Yankee Nuclear Power Station Corporation i cc: i 

                        - Ellyn R. Weiss,'Esq..                      Resident Inspector-Harmon & Weiss                             U.S. Nuclear Regulatory Comission 2001 S' Street, N.W.-                    ~P.O.' Box-176-                                                                  -{

Washington, D.C. 20009 '- Vernon,. Vermont' 05354 David JL Mullett,.Esq. Csrol S. Sneider,.Esq. Special-Assistant Attorney General Assistant Attorney General 

                       -Vermont Depart. 'of Public Service          Office of the Attorney General 120 State Street.                        .One Ashburton Place,'19th' Floor
Montpelier, VT 05602 Boston, MA 02108 E ~ Jay Gutierrez' Geoffrey M.JHuntington., Esquire
                     - Regional Counsel'                            Office of-the Attorney General' USNRC, Region I~                           Environmental Protection Bureau
                     - 475 Allendale Road _.                        State House Annex King' of Prussia, PA 19406 .

25 Capitol Street , Concord, NH 03301-6397 G.' Dana Bisbee, Esq. Charles .Bechhoefer, Esq. 

                   ' Office.of the Attorney General                 Administrative Judge.
                    - Environmental Protection Bureau.              Atomic Safety and Licensing Board-
                    - State: House Annex.                           U.S. Nuclear Regulatory Comission 25 Capitol Street..
                                                                                                 ~

Washington, DC 20555 

                   - Concord, NH 03301-6397 Dr. . James H. : Carpenter
                             .                                      Administrative Judge-Atomic Safety and Licensing Roard           Atomic' Safety and Licensing Board
                  - U.S. Nuclear Regulatory Comission -             U.S. Nuclear Regulatory Comission -

Washington,'.DC :20555 Washington, DC' 20555 Mr. Gustave A. Linenberger, Jr. . Adjudicatory File (2) Administrative Judge Atomic SafetyLand Licensing Board Atomic Safety and Licensing Board Panel Docket . U.S. Nuclear Regulatory Comission U.S. Nuclear Regulatory Comission Washington, DC 20555 Washington, D.C. 20555 l l 1 v _1-_. --- - - _ - - - - -- a

k- . ENCLOSURE STATUS REPORT ON THE REVIEW 0F > THE PROPOSED TECHNICAL SPECIFICATION FOR REACTOR PROTECTIOh SYSTEM (RPS) PROTECTION PANELS DOCAET NO. 50-271 BACKGROUND: By letter dated March 4,1985 the Vermont Yankee Nuclear Power Corporation's (VYNPC) proposed technical specification (TS) related to the Reactor Protection System (RPS) power protection panels at Vermont Yankee. The proposed TS was required to complement the design modification made to protect the RPS from sustained abnormal voltage and frequency conditions. This abnormal condition was postulated to occur as a result of a seismic event which can cause a failure of the RPS. EVALUATION: With respect to VYNPC's commitment to install an RPS power muitoring system design modification, the staff requested the design information by letter dated August 2, 1982 from D. Vassallo to J. Sinclair. Also, the letter forwarded a model (Standard) TS (i.e., LC0 3.8.4.4 and SR 4.8.4.4) which has been used by other BWRs on a similar RPS power monitoring installation. By staff's Safety Evaluation Report dated March 30, 1984, the NRC approved VYNPC's installation of GE designed electrical protection assembly (EPA). However, the staff concluded that the technical specification change proposed by VYNPC was not acceptable as it failed to include relay setpoints, the limiting conditions for operations (LC0) and the surveillance requirements (SR). Since the installed RPS power protection panels were identical to the ones installed at other BWRs, the staff provided VYNPC the model standard TS adopted by other BWRs and requested the licensee to conform with the requirements. FINDINGS: By letter dated March 4, 1985 from W. Murphy to H. Denton, VYNPC proposed relay setpoints, the LCO and the SR. We have reviewed the proposed TS pages 175a, 177 and 177b by comparing them with our previously provided model TS for conformance. We find that:

1) LC0 3.10.5 RPS Protection Systems Vs. LC0 3.8.4.4 (Model TS)

The proposed LCO on page 177 provides no separate LCO provision to restore one inoperable panel to an operable status within 30 minutes when both RPS power protection panels become inoperable and no justification has been provided for its omission. 1 L________________________ _ _ _ _

y ;[ a C' ?%4  ?,(' . 

     ,                                                   ~2-
                      -2)     SR 4.10.6:RPS Power Protection Vs. SR 4.8.4.4 (Model TS )-

The proposed SR on page 175a includes;no provision which vequires channel functional test once per 6 months. No- 

                            ' justification:has been provided fo* not performing the channel functional' test.-

4 3). The. proposed SR on'page 177b-provides no basis for selecting the setpoints and. time delays on overvoltage, undervoltage, and underfrequency. f l l 1 [. . 

 .}}
Retrieved from "https://kanterella.com/w/index.php?title=ML20247E769&oldid=3217576"