ML17334B715

LER 98-017-00:on 980327,debris Recovered from Ice Condenser Potentially Represented Unanalyzed Condition.Investigation Into Condition Continues.Update to Interim LER Will Be Submitted by 980531

ML17334B715
Person / Time
Site:	Cook
Issue date:	04/06/1998
From:	Schoepf P AMERICAN ELECTRIC POWER CO., INC.
To:
Shared Package
ML17334B714	List: ML17334B713 ML17334B715
References
LER-98-017, LER-98-17, NUDOCS 9804140148
Download: ML17334B715 (1)

Text

NRC FORH 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB No. 3150-0104 (5-92) EXPIRES 5/31/95 ESTIMATED BURDEN PER RESPONSE TO COHPLY NITH THI INFORMATION COLLECTIOH REQUEST: 50.0 MRS. FORllAR LICENSEE EVENT REPORT (LER) COMMENTS REGARDIHG BURDEN ESTIMATE TO TH INFORHATION AND RECORDS MANAGEMENT BRAHCH (HNB 7714), U.S. NUCLEAR REGULATORY, COMMISSION, MASHIHGTON, DC 20555 0001, AND TO THE PAPERNOR REDUCI'IOH PROJECT <3150-0104), OFFICE 0 MANAGEMENT AHD BUDGET IIASHINGTOH OC 20503.

FACILITY NAME (1) DOCKET NUMBER (2) Page 1 of1 Donald C. Cook Nuclear Plant - Unit 1 50.315 TITLE (4)

Interim LER - Debris Recovered from Ice Condenser Potentially Represents Unanalyzed Condition EVENT DATE 5 LER NUMBER 6 REPOR T DATE 7 OTHER FACILITIES INVOLVED 8 SEQUENTIAL REVISION FACILITY NAME DOCKET NINBER MON'TH DAY HONTM DAY YEAR YEAR NUMBER NUHBER Cook - Unit 2 50-316 FACILITY NAME 03 27 98 98 -- 017 00 04 06 DOCKET NINBER OPERATING S REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR Check one or mor e 11 MODE (9) 20.2201(b) 20.2203(a)(3)(I) 50.73(a)(2)(iii) 73.71 (b)

PONER 0

20.2203 a 1 20.2203 a 3 ii 50.73 a 2 iv 73. 710 LEVEL (10) 20.2203(a)(2)(I) 20 '203(a)(4) 50.73(a)(2)(v) OTHER 20.2203 a 2 ii 50.36 c 1 50.73 a 2 vii (Specify in 20.2203(a)(2)(iii) 50.36(c)(2) 50.73(a)(2)(viii)(A) Abstract below 50 '3(a)(2)(viii)(B) and in Text, 20.2203(a)(2)(iv) 50.73(a)(2)(I) NRC Form 366A)

?0.2203(a)<2)(v) X 50.73(a)(2)(ii) 50.73(a)(2)(x)

LICENSEE CONTACT FOR THIS LER 12 NAME TELEPHOHE NUHBER (Include Area Code)

Mr. Paul Schoepf, Safety Related Mechanical Engineering Superintendent 616/465-5901, x2408 COMPLETE ONE LINE FOR EACH COMPONEN'r FAILURE DESCRIBED IN T HIS REPORT 3 REPORTABLE REPORTABLE CAUSE SYSTEH COHPONENT MANUFACTURER CAUSE SYSTEH COMPONENT MANUFACTURER TO HPRDS To NPRDS SUPPLEMENTAL REPORT EXPECTED 14 EXPECTED MONTH DAY YEAR YES SUBMI SS I ON X (If yes, complete EXPECTED SUBMISSION DATE) ~

Ho DATE (15) 05 31 98 ABSTRACT (Limit to 1400 spaces, i.e., approximately 15 single-spaced typewritten lines) (16)

On March 27, 1998, an ENS notification was made in accordance with 10CFR50.72(b)(2)(i), for a condition found while the reactor was shutdown, which if it had been found while the reactor was operating, could have resulted in the plant being in an unanalyzed condition. This interim LER is therefore submitted in accordance with 10CFR50.73(a)(2)(i)(b), for an unanalyzed condition.

The ice condenser consists of 24 bays, each of which contain 81 ice baskets. The bays are arranged in a 300 degree arc on the containment wall. Following a postulated accident, the ice serves to condense steam and provide a supplemental source of borated water for long term core cooling. Ice meltwater passes through the ice condenser floor drains and into the sump.

Inspection of a filter in the ice melt system used to melt ice vibrated from a sample of 5 unit 2 ice baskets and approximately 110 unit 1 ice baskets has revealed the presence of debris. Included in the debris were various fasteners, ice basket and wood screws, wood, glass, plastic, tape, basket ligaments, foam insulation, galvanizing flakes, gloves, and hardware. The nature and volume of debris found from both units was such that the potential effect on the ice condenser floor drains and sump represents an unanalyzed condition.

The investigation into this condition continues. A decision has been made to thaw both units'ce condensers to facilitate inspections, maintenance, and foreign material removal prior to restart. The significance of the debris will be evaluated afler both units'ce condensers are thawed and the total volume and nature of the resident debris is established.

An update to this interim LER will be submitted by May 31, 1998.

9804240i48 'F80406 PDR ADQCK 05000315 S PDR