ML20236F651

Informs That J Pellet Replacing R Cooley as Section Chief of Operators Licensing Section in Div of Reactors Safety, Effective 871025

ML20236F651
Person / Time
Site:	Kansas State University
Issue date:	10/26/1987
From:	Callan L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:	Faw R KANSAS STATE UNIV., MANHATTAN, KS
References
NUDOCS 8711020249
Download: ML20236F651 (1)

Text

00T S 61987 In Reply Refer To:

Docket: 50-188 Kansas State University Department of Nuclear Engineering ATTN: Dr. R. E. Faw, Director

-Nuclear Reactor Facility Manhattan, Kansas 66505 Gentlemen:

Subject:

New Operator Licensing Section Chief Effective October 25, 1987, Mr. John L. Pellet will assume the position and duties of Section Chief of the Operator Licensing section in the Division of Reactor Safety replacing Mr. Ralph Cooley.

All communications' and correspondence formerly sent to Mr. Cooley should now be addressed to Mr. Pellet.

Sincerely, ,

Original Signed By A B.' Bcach' L. J. Callan, Director kDivisionofReactorProjects cc:

Kansas Radiation Control Program Director j bec to DMB (IE51) bec:  ;

R. Martin I C:RPSB-DRSS J. J. Dosa, NRR, Project Manager DRP D. Weiss, RM/ALF RIV File MIS Coordinator RSTS Operator C:FRPS R. L. Bangart, DRSS R. Hall RPSB-DRSS DRS \

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U.S. NUCLEAR REQULATORY COMMIS$10N APPROVED OMS NO. 31E0104 LICENSEE EVENT REPORT (LER) 5"'a88: 8'288 DOCKET NUMBER (2) PAGE13J 0 l 5 t o l 0 l 0 l3 l2 l 7 i lopl 0 ;3 j uicone Rubber Insulated Cables During Testing LE R NUMBER {$) REPORT DATE 17) OTHER F ACILITIES INVOLVED (5) h YEAM "uSM n' ' "'[M% MONTH DAY YEAR F ACILIT V N AMES DOCKE T NUMBERtSi Sequoyah, Unit 2 0 l 5 l 0 l 0 l 0 l 3l2 ;8

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7 8l7 0l4 l 8 0% 1l0 2 l6 8l7 0 1 51 0 tol0 t l I THt$ REPORT 18 $UeMITTED PUR8UANT TO THE REQUIREMENTS OF 10 CFR 5: (Ch.c4 on or mora or rh. renowing) 01)

.5 20 40m) 20m.) so.7m.H2H .i 73.7 m) 20.4061.H1HI) 60.36(.H1) 60.73(.H2Hv) 73.711.)

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20.400 t.H1 Hivi 60.734sH2 Hill 60.73(.H2HviiH(0) 20.40ei.Hi H.) s0.73<.H2Hw 60.7 3<.H2 H = > Voluntary Reoort LICENSEE CONTACT FOR THis LER (121 TELEPHONE NUMBER AREA CODE Plant Operations Review Staff 6l 1 l5 8l7 g 0l 17 l2l5l4 COMPLETE ONE LINE FOR EACH COMPONENT F AILURE DESCRISED IN THl3 REPORT (13)

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)MPONENT p CA SE S Y ST E M COMPOWNT .

I Bl L 14 R I 315 l 2 No l l l l 1 I I l BI L l4 010 10 l 0 No l l l l 1 l l SUPPLEMENTAL REPORT E XPECTED (14) MONTH DAY YEAR re evecreo svowssion oA res Q NO l l l c mc., i.a. .oom mmry 1,re n .<noi. .e.c. two.r,rw,n.a n el et is being submitted as a " Voluntary LER" to identify a potential problem cone rubber insulated cables and to keep NRC informed of ongoing s at Sequoyah Nuclear Plant, ee concern which originated at Watts Bar Nuclear Plant suggested that the

. ling practices could have damaged the cables and could result in General Construction Specification G-38, " Installing Insulated Cables To 15,000 Volts," prescribed the materials and procedures for installing, ng, splicing, and marking field-installed cables at both Watts Bar Nuclear L Sequoyah Nuclear Plant. Subsequently, high-potential cable tests were

, to assess damage associated with pull-bys, jamming, and vertical cable l by 90 degree condulets. Favorable results were obtained from the tests exception of the vertical cables supported by 90 degree condulets. On 1987, with both units in mode 5 (cold shutdown), 3 out of 16 conductors

'e considered worst-case vertical drop cables failed the high-potential was determined after laboratory testing that the cables had not failed at tgree condulets that supported the vertical cable (high-stress point);

it was discovered that silicone rubber cables were more susceptible to aage than expected. A 10 CFR Part 21 report was submitted on

' 10, 1987, for silicone rubber insulated cables as additional failures during testing. The root cause of this nonconformance is unknown becauso

>een unable to consistently correlate the test data to the nonconformance id . Additional testing will be performed and the results evaluated to L level of confidence in the integrity of the cable.

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