ML19350B433

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PNO-TMI-81-007:on 810317,ion Exchange Media Column Test, Supporting Submerged Demineralizer Sys Technical Evaluation Data,Not Performed During Seventh Entry Into TMI-2 Reactor. Caused by Lodged Submersible Pump Above Sump Water
ML19350B433
Person / Time
Site: Crane Constellation icon.png
Issue date: 03/18/1981
From: Barrett L, Conte R, Fasano A
Office of Nuclear Reactor Regulation
To:
References
PNO-TMI-81-007, PNO-TMI-81-7, NUDOCS 8103200541
Download: ML19350B433 (2)


Text

PRELIMINARY fiOTIFICATION 50320810317 March IS, 1981 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-TMI-81-07 This preliminary notification constitutues EARLY notice of events of POSSIBLE safety or public interest significance.

The information presented is as initially received without verification or evaluation and is basically all that is known by NRC staff on this date.

Facility: Metropolitan Edison Company Three Mile Island, Unit 2 Middletown, Pennsylvania.

Docket Number 50-320 Subject _: REACTOR BUILDING (CONTAINMENT) ENTRY On March 17, 1981, between 7:00 a.m. and 3:3B p.m. the seventh entry into the TMI-2 Reactor Building was conducted. All planned tasks were successfully completed except one of the tasks was not accomplished due to an equipment interference problem.

An ion exchange media column test was to be conducted to support technical data evaluation for the Submerg,ed Demiperalizer System (system planned by the licensee to use for containment sump water cleanup). This test involved lowering a submersible pump into the sump water. However, during the lowering process the pump became

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lodged between conduit or piping in an area approximately 3 feet above the sump water level. Consequently it could not be moved in either direction, up or down.

A second phase to the entry is to be accomplished March 19, 1981. Today, the licensee is planning to submit a proposal to the onsite staff to utilize a sump sample pump for the ion exchange media.

(This tem to obtain water samples from the sump yesterday.) porary pump was successfully used Onsite staff monitoring of this event will continue.

Media interest has occurred because the licensee issued a press release.

In addition, today the licensee is conducting tours for the media in which approximately 100 reporters are expected onsite.

The Comonwealth of Pennsylvania has been informed.

The NRC has not made plans to issue a press release.

The NRC TMI Program Office received notification of this occurrence by moni_toring events as they occurre_d and this information wa current as of 9:00 a.(

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Contact:

R. Conte 590-1125 A. Fa ano 590-1123 L(~1La ett 590- 20

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PNO-TMI 07 (continued) 2-March 18, 1981 DISTRIBUTION: (Facsmile Transmission Times Noted)

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Commissioner Gilinrky W. J. Dircks, EDO Comissioner Bradford C. Michelson, AEOD Region I

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Comissioner Ahearne J. J. Fouchard, PA Region II __ /O:54 ACRS N. M. Haller, MPA Region III S. J. Chilk, SECY G. W. Kerr, OSP Region IV C. C. Kamerer, CA H. K. Shapar, ELD Region V

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J. Tourtellotte S. H. Hanauer, NRR J. J. Cummings, OIA Asst. Chief Hearing B. J. Snyder, NRR Counsel, OELD PRELIMItGRY NOTIFICATION e

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