ML20215D812

Further Response to NRC 860925 Telcon Re Item of Noncompliance Noted in Insp Repts 50-293/81-18 & 50-293/81-22.E203 Walkdown Project Developed to Revise Procedures on Effects of Opening Breakers

ML20215D812
Person / Time
Site:	Pilgrim
Issue date:	09/30/1986
From:	Lydon J BOSTON EDISON CO.
To:	Ebneter S NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
86-154, NUDOCS 8610140307
Download: ML20215D812 (4)

Text

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U L.J sos 70N axsont Executive offices 800 Boylston street Boston, Massachusetts 02199 September 30 , 1986 Ch f pe[at g ficer BECo Ltr. #86-154 Mr. Stewart D. Ebneter, Director Division of Reactor Safety U.S. Nuclear Regulatory Commission Region I - 631 Park Avenue King of Prussia, PA 19406 License No. DPR-35 Docket No. 50-293

SUBJECT:

Status of Activities on NRC INC. #81-22-01

References:

(A) Combined NRC Inspections 81-18 and 81-22 (B) BECo Letter #85-142, Dated August 7, 1985

Dear Mr. Ebneter:

This letter is providing a revised schedule of activities (Attachment #1) related to the resolution of the Item of Noncompliance #81-22-01 and is a followup to a telephone conversation held on 9/25/86 between Boston Edison staff personnel and Mr. J. Durr of your staff. This item related to a maintenance request requiring the D4 breaker (No. 3) to be opened which doenergized power to panel No. C930. This resulted in a loss of redundancy for the high tenperature and high steam flow rate auto isolation function, and a foss of trip capability for the RCIC Icw pressure auto isolation function.

In response to this item BECo developed the E203 walkdown project with a goal to revise PHPS procedures so that they clearly identify the affects of opening breakers on various buses supplying equipment throughout PNPS. Substantial progress has been made in complying with the project commitments and schedules listed below, which were established and provided in BECo Letter #85-142 (Reference B).

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Mr. Stewart D. Ebneter Page 2 Scheduled Date Activity Description Completion Date Completed Revise procedures for D4, DS, D6, Y1, Y2 12/31/85 12/31/85 and D19 to more clearly indicate equipment affected by the individual breakers.

Complete E-203 walkdowns and issue Discrepancy 7/31/86 4/11/86 packages to the Nuclear Engineering. Dept.

for disposition.

Revise all affected procedures to include:

1) Applicable Technical Specification 9/30/86 12/31/85

2) Halkdown-Observed Configuration Changes 9/30/86 10/31/86 EST.

3) Component Details 9/30/86 1/31/87 EST.

Phase I of the project was completed by the scheduled date of 12/31/85. This involved the initial revision of procedures for Panels 04, DS, D6, D19, Y1 and Y2 to clearly indicate equipment affected by the individual breakers, also included were references to the applicable Technical Specifications. The second phase of the project was scheduled to be completed by 7/31/86. The walkdown tasks were accomplished and the circuit discrepancies documented by 4/11/86. The purpose of the walkdowns was to verify that power cables entering a panel terminate at the correct terminal block points, as shown on applicable external wiring drawings, and that the cable scheme number is correct. Also an internal wiring verification of the power distribution within the panel was conducted which consisted of point-to-point checks as delineated by the latest applicable internal wiring drawing. This provided a comparison of the number of internal and external wires actually connected at a given terminal point With the number shown on the applicable drawings.

The final phase of the project which involves revising the affected procedures to include walkdown configuration changes and component detail, based on the walkdowns and circuit analysis, is behind schedule. The delay to this aspect of the project is a result of the Boston Edison Union personnel work stopage, the temporary reallocation of resources to the Mode Switch Analysis Project and the cuantity and complexity of discrepancies identified during the circuit walkdowns. The amount and variety of discrepancies found during the walkdown portion of the project far exceed the percentage of discrepancies found during the original walkdowns, upon which the anticipated workload and schedule was based.

Many of the E203 project discrepancies deal with fused equipment. The Engineering Department has been performing a detailed fuse coordination study for station equipment and these discrepancies have been incorporated into that study for resolution. The Engineering Department evaluations of the remaining E203 project discrepancies are continuing in a thorough, controlled and time intensive manner.

Mr. Stewart D. Ebneter Page 3 In order to include the results of the electrical fuse coordination study which at this time is scheduled for completion by December 15, 1986 and to include the resolutions of discrepancies identified during walkdowns which plan to be completed by Oct. 31, 1986, the revised date for completion of the final phase of this project has been rescheduled to January 31, 1987. 1 The documented discrepancies will have been evaluated by Engineering at that time. Discrepancies that raise concerns to Engineering and require corrective l l maintenance or modifications will be resolved through the BECo Corrective l Action Program (e.g., Potential Condition Adverse to Quality Report, Plant Design Change or Field Revision Notice). The procedures will be updated again I in the future as required to maintain the latest information via the corrective action program.

It should be noted that engineering evaluations, completed to date, have detected no significant conditions adverse to quality. A majority of the cases have been evaluated to be electrically equivalent, a clerical problem or not a true discrepancy but a possible misinterpretation of the drawings.

However, if a significant condition adverse to quality is discovered through engineering evaluation, it will be resolved prior to start-up or a l justification for operation will be prepared.

Should you have any further questions concerning this matter, please do not hesitate to contact me.

Very truly yours, dmes M, Lydon

! JQ/la l Attachment 1. E203 Project Planning Schedule '

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PROJECT ONLINE PROJECT /2 84B1 PLOT ONLINE E203 PROJECT MODE C/F BAR CHART GRAPHICS j HUN DATE 305EP86 BOSTON EDISON - PROJECT CONTROL GRP. INTERVAL: 1 MONTH (S) PAGE 1 SHEET 1 biART ~' '[.18DEC84 PL ANN ING SCHEDULE ,

F IN ISH 29FEB88 DATA DATE 235EP86 SORT E START 1 CODES '

1986 1987 ES EF DUR S O N D J ..

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E 1701 E203-ANALYSEEEN SOLUTN FOR THE 294 DESCREP ID 9SEP86 300CT86 304 --- I '

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1703 COMPLETE FUSE COORD STUDY TO ID DESCREP

'3 S E P 8 6 15DEC86 556 ----------- l  : .

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3702 REVISE PROCED 2.2.11,14,16 TO INCLD DESCREP 3IOCT86 29JAN87

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3104 PROCEDURES 2.2.11,14,16 REVISED 29JAN87 - - - - - - - - - - - - - - - - - - - - - - - ------------

DATA DATE LEGEND '

REPORTED PROGRESS  :

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EARLY SCHEDULE [ 7 CRITICAL -! _ __

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