ML17328A274
| ML17328A274 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 06/12/1990 |
| From: | Blind A INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | Davis A NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9006200044 | |
| Download: ML17328A274 (4) | |
Text
ACCELERATED D THJBUTION DEMONS i
TION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR:9006200044 DOC.DATE: 90/06/12 NOTARIZED: NO DOCKET FACIL:50-315 Donald C.
Cook Nuclear Power Plant, Unit 1, Indiana 6
05000315 50-316 Donald C.
Cook Nuclear Power Plant, Unit 2, Indiana 6
05000316 AUTH.NAME AUTHOR AFFILIATION BLIND,A.A.
(formerly Indiana 6 Michigan Ele RECIP.NAME RECIPIENT AFFILIATION DAVIS,A.B.
Document Control Branch (Document Control Desk)
SUBJECT:
Submits followup,per 900205 6 0308 ltrs,S provides update re inoperable fire barrier.
DISTRIBUTION CODE A001D COPIES RECEIVED:LTR ENCL SIZE TITLE:
OR Submittal:
General Distribution NOTES:
RECIPIENT ID CODE/NAME PD3-1 LA GIITTER,J.
INTERNAL: NRR/DET/ECMB 9H NRR/DST 8E2 NRR/DST/SICB 7E NUDOCS-ABSTRACT OGC/HDS1 RES/DSIR/EIB EXTERNAL: LPDR NSIC COPIES LTTR ENCL RECIPIENT ID CODE/NAME PD3-1 PD NRR/DOEA/OTS B1 1 NRR/DST/SELB 8D NRR/DST/SRXB 8E R
G FIL NRC PDR COPIES LTTR ENCL NOTE TO ALL"RIDS" RECIPIENTS:
PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATEYOUR NAMEFROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!
TOTAL NUMBER OF COPIES REQUIRED'TTR 21 ENCL
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Indiana Michigan~
Power Company Cook Nuclear Plant One Cook Place Bridgman, Ml 49106 616 465 5901 June 12, 1990 Donald C.
Cook Nuclear Plant Unit Nos.
1 and 2
Docket Nos.
50-315 and 50-316 License Nos.
DPR-58 and DPR-74 United States Nuclear Regulatory Commission Document Control One White Flint North 11555 Rockville Pike Rockville, Maryland 20852 ATTN:
Mr. A.B. Davis
Dear Mr. Davis:
This letter is being submitted to 1) serve as a follow-up as committed in previous letters dated February 5, 1990 and March 8,
1990 and
- 2) to provide an update regarding an inoperable fire barrier reported in a previous letter dated February 5, 1990.
0 In a previous letter dated February 5,
- 1990, we reported that fire barrier penetration Seal W-7109, located in the Unit One 4KV complex was declared inoperable on January 2,
- 1990, due to a destructive examination of the seal.
When the seal was removed it was determined that an engineering evaluation was necessary to repair the seal due to an inaccessible gap in the fire barrier penetration.
The engineering evaluation has been completed.
The fire seal was repaired and restored to operability on April 19, 1990.
A fire watch, as required by Technical Specification 3.7.10 action a, was maintained while the fire seal was inoperable.
o In a previous letter dated march 8,
- 1990, we informed you that fire dampers 1-HV-AC-FD-1, 1-HV-AC-FD-2, 1-HV-AC-FD-3, 2-HV-AC-FD-1, 2-HV-AC-FD-2 and 2-HV-AC-FD-3, located in the Unit One and Unit Two P-250 Computer
- Rooms, were declared inoperable on February 8,
- 1990, when they failed to automatically close during surveillance testing.
An engineering evaluation was necessary to determine the reason for the failure and appropriate repairs or replacements, as necessary.
The evaluation has been completed.
The fire dampers were restored to operability on May 17, 1990.
A fire watch, as required by Technical Specification 3.7.10 action a, was maintained while the doors were j.nooezable.
9006200044 9006iz pC/
R ADOCK 05000315 PDC
A.B.
June Page Davis 12 2
o In a previous letter dated February 5,
- 1990, we informed you that fire barrier penetration seal W-5080 separating the Unit One Auxiliary Cable Vault and the 620'levation of the Auxiliary Building was declared inoperable on January 16,
- 1990, due to a 1/4 inch gap between the top of the sealant material and its penetration.
In a follow-up letter dated April 4,
- 1990, we informed you that a design change was necessary to repair the seal.
The design change has been completed.
The fire seal was repaired and restored to operability on May 1, 1990.
A fire watch, as, required by Technical Specification 3.7.10 action a, was maintained while the seal was inoperable.
o In a letter dated February 5,1990, we reported that Fire Door 371, the Contractor Access Building to Auxiliary Building door, was declared inoperable on January 13,
- 1990, due to a failure of its latching mechanism.
During repairs to the door latch hardware several cracks were discovered in the door which had.the potential of adversely affecting its three hour fire rating.
At that time a replacement door was ordered.
The door was received on June 11, 1990. It is anticipated that the door will be installed and made operable by June 22, 1990.
A fire watch, as required by Technical Specification 3.7.10 action a, will be maintained while the door is inoperable.
Respectfully, A.A. Blind Plant Manager c'.H. Williams, Jr.
A.B. Davis, Region III M.P. Alexich P.A. Barrett J.E.
Borggren R.F. Kroeger NRC Resident Inspector J.G. Giitter, NRC R.C. Callen G.
- Charnoff, Esq.
Dottie Sherman, ANI Library D. Hahn INPO S.J.
Brewer/B.P.
Lauzau