IR 05000293/1989043

Mgt Meeting Rept 50-293/89-43 on 890309 Re Licensee Followup to 890304 Reactor Scram & Util Overview of Turbine Control Sys

ML20244A733
Person / Time
Site:	Pilgrim
Issue date:	04/06/1989
From:	Blough R, Kohl M NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To:
Shared Package
ML20244A697	List: IR 05000293/1989043 ML20244A693
References
50-293-89-43-MM, NUDOCS 8904180164
Download: ML20244A733 (29)

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U.LS.' NUCLEAR REGULATORY COMMISSION Region I Meeting No.: .M-89-043 Docket No. : 50-293 License No.: DPR-35 Licensee: Boston Edison Company

.RFD #1, Rocky Hil1~ Road Plymouth, Massachusetts 02360 Facility Name: Pilgrim Nuclear Power Station Meeting At: USNRC, Region I, King of Prussia, Pennsylvania Meeting Conducted: March 9, 198 Prepared By: 6/67 M. Kohl, Reactor Engineer Date Division of Reactor Projects Approved By: I[1s,r

- A./6 andy' B1o'GgW ghief [] Date Rdattor Projecti Section No. 3B Division of Reactor Projects

Meeting Summary:

A management . meeting was held at. NRC Region I on March 9,1989, to discuss li.censee followup to the. March 4,1989 reactor scram. The licensee gave an overview of their turbine control system, described . the event, discussed the issues identified and actions taken, and described management's proposed actions. The meeting lasted about three hours including a half-hour break for an NRC staff caucu An observer representing the Commonwealth of Massachusetts attended the meetin i i

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8904180164 890407 f PDR ADOCK 05000293 i a PDC  ;('

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DETAILS 1.0 Purpose The management conference was held at the request of the licensee, Boston Edison Company (BECo). The licensee wanted to discuss ~ completed and planned followup actions in regard to -the March 4, 1989 reactor scra Meeting attendees are listed in Attachment .0 Meeting Summary-Mr. William Russell, NRC Region I Regional Administrator, opened the meet-ing with a brief introduction of the - topic and personnel in attendanc Mr. Ralph Bird, Boston Edison Senior.Vice President, presented an overview of Boston Edison's planned presentation and' the purpose of the meetin BECo distributed a Boston Edison prepared package of the intended presen-tation including the overhead displays (Attachment II).

The licensee then made a presentation on the March 4,1989 reactor scra The event involved. an unplanned isolation of the main steam lines and attendant reactor scram when pressure dropped as a result of spurious operation of the nonsafety related turbine bypass valve All safety systems functioned properly and there were no adverse safety consequences-of the even ]

The licensee provided schematics and drawings of the turbine control sys- -

tem and explained system operation. The reactor scram of March 4,1989, was then discussed in detai The events leading to the scram and the events immediately following the scram were analyzed using information i from the process computer, the Emergency Plant Information Computer (EPIC), and various instrument recorder strip charts. Through interviews with watchstanders and observers the licensee identified the location of all people in the control room at the time of the even The . licensee performed visual inspections and a functional test of affec- I ted systems and components as part of their' followup actions. They also conducted a review of instrument data and investigated the possibility of similar industry events. An independent review of the event was also performed by the engineering department. At the conclusion of the inves-tigation, the licensee identified several potential causes, but could not conclusively determine that any of these was the actual cause of the event.

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s The licensee proposed a test to be run .after startup to confirm proper operation of turbine controls or identify the cause of. the March 4,1989 event. This test would include all the conditions leading to that even In addition, a ' closed circuit TV would be installed to monitor the link-ages at the turbine statio Additional instrumentation' would also be utilized. The licensee would use the test results to determine what, if any, additional actions are require .0 Concluding Statements At the end of the meeting, Mr. Russell and Mr. Bird made concluding remarks. Mr. Russell questioned if the as built conditions are in accord-ance with the drawings. The licensee responded that a large portion of this verification -work had been completed, but they were evaluating it further at the time. Mr. Russell also asked if there was a circuit-to-ground or circuit-to-circuit interaction. The licensee stated that they

- have performed that type of testing and will review that testing to deter-i mine if it is complete. (Subsequently, the licensee provided acceptable answers to the above questions in a teleconference on March 11,1989.)

The licensee comraitted to a complete evaluation of the turbine test and to provide the NRC Restart Manager with the results prior to resuming with the Power Ascension Program.

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l- ATTACHMENT I j Meeting Attendees Boston Edison Company (BECo) i R.-Bird Sr. Vice President'- Nuclear R.~ Anderso Plant Manager

' J. Fidler Public Affairs

, M. Perito Sr. Systems Engineer

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L. Olivier Chief Operating Engineer S. DiPalma Start-up Engineer R. Grazio Regulatory Affairs Manager U. S. Nuclear Regulatory Commission W. Russell Regional Administrator T. Martin Director, Division of Reactor Safety (DRS)

S. Collins Deputy Director, Division of Reactor Projects (DRP)

R. Gallo Chief, Operations Branch, DRS J. Wiggins Chief, Reactor Projects- Branch No. 3, DRP (By : Phone)

A. Blough Chief, Reactor Projects Section 3B (RPS 3B), DRP J. Lyash Project Engineer,'RPS 38, DRP C. Warren Senior Resident Inspector, Pilgrim Station M.-Kohl Reactor Engineer, RPS 3B, DRP S. Juergens Reactor Engineer, RPS 3B, DRP

'C. Sisco Operations Engineer, DRS S. Horwitz Field Public Affairs Officer R. Mathew Reactor Engineer, DRS R. Paolino Senior Reactor _ Engineer, DRS J. Lara Reactor Engineer, DRS D. Mcdonald Project Manager, NRR (By Phone)

Commonwealth of Massachusetts

' P. Reagan Consultant

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