ML20138P350

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Provides Addl Updated Fire Protection Schedule,Reflecting Both Work Completed & Rescheduling of Four Items.Items Discussed Individually
ML20138P350
Person / Time
Site: Zion  File:ZionSolutions icon.png
Issue date: 12/16/1985
From: Leblond P
COMMONWEALTH EDISON CO.
To: Harold Denton
Office of Nuclear Reactor Regulation
References
1000K, NUDOCS 8512260069
Download: ML20138P350 (6)


Text

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Comm:nwrith Edison 9h 2 -O 9 2 s

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k C One First National Plaza, Chicago lilinois C ', Address Reply to. Post Ofhce Box 7M h}I f-O

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Chicago, llhnois 60690 h ,

December 16, 1985 N ,

F b4 Mr. Harold R. Denton, Director / ~

Office of Nuclear Reactor Regulation -

U.S. Nuclear Regulatory Commission 8-O c/

Washington, DC. 20555

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Subj ect: Zion Nuclear Power Station Units 1 and 2 Fire Protection NRC Docket Nos. 50-295 and 50-304 References (a): August 31, 1984 letter from R. N. Cascarano to H. R. Denton.

(b): July 9, 1985 letter from P. C. LeBlond to H. R. Denton.

Dear Mr. Denton:

Reference (a) submitted for your review a modification implementa-tion schedule of the work necessary to achieve compliance with 10 CFR 50, Appendix R. Reference (b) provided an updated schedule along with the status of the various modifications in July of 1985. This letter provides an additional updated schedule (attached) which reflects both the considerable work that has been completed and the rescheduling of four items.

In general, the modification work has been proceeding very well as evidenced by the 'large pumber of completed items on the attached schedule.

However, there are four items whose completion cates have been altered.

These are discussed individually below.

ITEM 9 (Provide a scheme to provide feed to the sample panel)

This modification to Unit 2 has been deferred to a May 1, 1986 completion date due to a lack of manpower in specific work groups. The available nanpower has been concentrating their efforts on prioritized fire protection modifications. Since other Appendix R safe shutdown functions have been deemed to be more important than sampling, this work has been delayed by approximately four months.

ITEM 11 a. b, c (Independent power feed for instrumentation) a The work required for the outside-containment portion of this modification has been deferred to a June 1, 1986 completion date for Unit 2. All inside-containment work is on schedule and will be completed by the end of the current refueling outage. This delay was required due to the failure of the Mineral Insulated cable to meet the %g necessary performance standards during the design fire condition. The g g cable test failure has prompted a redesign of the instrumentation cable l routing.

8512260069 851216 PDR ADOCK 05000295 g PDR .

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H. R. Denton December 16, 1985 The new cable routing design required a containment walkdown that could not be performed during power operations. Even though this walkdown was expedited at the beginning of the current refueling outage, the issuance of construction drawings and the start of actual cable rerouting was delayed approximately ten weeks. Thus, the current emphasis is to complete the work inside of the containment during this refueling outage. This will allow the remainder of the work to be performed during ,ower operations.

ITEM 14 - #1 (Procurement and installation of fire dampers)

The work is currently expected to be completed by March 15, 1986.

The dampers required to complete the work are expected to be delivered by January, 1986. Upon their receipt, this equipment will be installed as expeditiously as possible.

ITEM 23 (Add emergency lights)

This work will be completed by May 15, 1986. The modification is taking longer than anticipated as the extent and complexity of the conduit installation are greater than originally estimated.

If any questions arise concerning this matter, please direct them to this office.

Very truly yours, f

P. C. LeBlond Nuclear Licensing Administrator im Attachment cc: NRC Resident Inspector - Zion J. Norris - NRR l

l looor

e-12/16/85 FIRg PROTECTION MODIFICATIONS SCHEDULE Page 1 of 4 Unit 1 Unit 2 Installation Installation Remarks

1. Providing means of venting instrument Complete 1985 cir from PORV-RC455 and PCV-RC456 Outage (i.e. de-energize associated solenoid on schedule operated valve)-AJd isolation switches in inner cable spread room, reroute

.DC control cables in conduit

2. Providing means of venting instrument Complete 1985 cir from letdown and excess letdown Outage valves (i.e., de-energize associated on schedule colonoid operated valve).

-Add isolation switch in inner cable cpreading rooms

-3. Installing a 3-way valve to facilitate Complete Complete bleeding of instrument air from FCV-MS57.

4. Install chains for handwheel and Ladders installed Ladders were d: clutch lever for valves installed as an MOV-MS0005, NOV-MS0011 and MOV-RH8701.

alternative. (see Ref. (b))

5. Work associated with mounting steam Complete Complete generator pressure indicator PI-MSS 14 outside valve house.
6. Work associated with mounting handloader 1986 Complete fcr atmospheric dump valve MOV-MS0017 Outage (SG A) outside valve house. Includes -

p;rmanent mount for air bottle. .

7. Work associated with the reactor Complete 1985 c:olant pump oil collection system Outage

- Seismic review of ring header on schedule

-- Drain to cavity flood sump

- Cavity flood sump modifications

8. Installation of residual heat 1986 1985 removal temperature and flow Dutage Outage indicator and local M/A stations on schedule
9. ' Work associated with boron sampling 1986 1985

- Modify A0V air lines to facilitate Outage Outage cpening "A" loop sample On schedule

- Provide sample Valve and Cont. Iso.

Valves with portable air bottle

- Provide scheme to provide feed May 1, 1986 to the sample panel

ga-12/16/85 FIRE PROTECTION MODIFICATIONS SCHEDULE Page 2 of 4 I l

Unit 1 Unit 2 Installation Installation Remarks 10.' Work associated with rerouting Diesel Complete 1985 Gen. fuel oil transfer pumps feed Outage On schedule

11. Independent power feed for instrumentation a) Addition of new power supplies

- RC Loop Pressure (403) 1986 June 1, 1986 Work inside of

- P"R Level (459) Outage containment for

- SG Level (501) Items lla, b, and e is on schedule (1985 outage). The remain, ing work outside of containment will be completed by June 1, 1986.

b) Work associated with routing new MI

, cable

- RC Loop Pressure (403) 1986 June 1, 1986

- PZR Level (459) Outage

- SG Level (501)

- T hot leg

- T cold les c) Addition of Isolation Switches

- RC Loop Pressure (403) -

1986 June 1, 1986

- PZR Level (459) Outage

- SG Level (501) d) Work associated with installing isolators

- SC Pressure Complete 1985

- Aux. FW Flow Outage

- SG Levels On schedule o) Work associated with installation Complete 1985 of isolation panels Outage On schedule

. 12. Work associcted with rerouting Complete Complete '

AFW Pump "C" Feed

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- Fire Wrap 9 579'-0" Complete Complete

13. Isolation Switches for diesel 1986 1985 generator output breakers Outage Outage On schedule

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12/16/85 FIRE PROTECTION MODIFICATIONS SCHEDULE Page 3 of 4 Unit 1 Unit 2 Installation Installation Remarks

14. Procurement and Installation of
1) Fire Dampers for: 1986 Outage March 15, 1986 Fire dampers to a) Eattery Rooms be delivered in b) Charging Pump Cubicles January, 1986
2) Fire Doors. Complete Complete
15. Procurement and Installation of Complete Complete Eew Smoke or Heat Detectors

- Aux. Building

16. Extending Metal Sheathing around N/A Complete one side of AFW 2C motor
17. Work associated with Terminating Complete N/A Centrifugal charging power cable 1A cnd providing 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> fire wrap on c nduit on 579'-0" elev.
18. Work associated with adding bypass Complete Complete cround closing side solenoid on main cteam isolation valve.
19. Installing fire stops in cable pan Complete trays for component cooling water pumps.
20. Separating Units fire detection Complete cystem on the component cooling water pumps

-21. Provide Diesel Generator Local 1986 1985 Control Capability. Outage Outage On schedule

-22. Fire Proofing Structural Steel in ESF 1986 1985 cwitchgear rooms (ceiling beams only) Outage Outage 23.; Add /Re-Aim Emergency Lights May 15, 1986

24. Communication Mods Complete
25. RIroute feeds to ESF MCC's Complete Complete
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. 12/16/85 FIRE PROTECTION MODIFICATIONS SCHEDULE Page 4 of 4 j l

Unit 1 Unit 2 Installation Installation Remarks 260 Cables requiring termination 42285) DC Feeds to Bus 149 Complete N/A 42286) DC Feeds to Bus 149 m 42287) DC Feeds to IB Diesel Generator Complete N/A 42286) DC Feeds to IB Diesel Generator 42278) Feed to battery charger 112 Complete N/A 32285) DC Feed to BW 249 N/A Complete 32286) DC Feed to BW 249 h

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