PNO-III-86-055, on 860606,during Initial Criticality,Two Intermediate Source Range Monitors Did Not Respond to Neutron Flux & Were Declared Inoperable.Cause Not Stated. Channels Will Be Repaired

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PNO-III-86-055:on 860606,during Initial Criticality,Two Intermediate Source Range Monitors Did Not Respond to Neutron Flux & Were Declared Inoperable.Cause Not Stated. Channels Will Be Repaired
ML20205T287
Person / Time
Site: Perry FirstEnergy icon.png
Issue date: 06/06/1986
From: Knop R, Warnick R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
References
PNO-III-86-055, PNO-III-86-55, NUDOCS 8606130094
Download: ML20205T287 (1)


PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-III-86-55 S7H&

Date June 6, 1986 l

! This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information is as initially received without M

verification or evaluation, and is basically all that is known by the Region III staff on this date.

Facility: Cleveland Electric Illuminating Licensee Emergency Classification:

Perry Unit 1 Notification of an Unusual Event Perry, OH 44081 Alert Site Area Emergency Docket No: 50-440 '- General Emergency XX Not Applicable Subj:ct: INITIAL CRITICALITY At approximately 2:46 a.m. (EDT), June 6, 1986, initial criticality was achieved.

Criticality occurred within predicted values. The resident inspector was in the control r:om observing the approach to criticality.

Two intermediate source range monitors did not exhibit any response to neutron flyx and were d:clared inoperable. The remaining channels, however, fulfilled the Technical Specification r;quirements for the number of operable channels. The two channels will be repaired and demonstrated operable during a subsequent reactor startup.

The State of Ohio will be notified.

R;gion III (Chicago) was informed of the initial criticality by the resident inspector at 7:15 a.m. (CDT), June 6, 1986. This information is current as of that time.

Rfl0 CONTACT: R. Knop R. Warnick FTS 388-5547 FTS 388-5575 DISTRIBUTION:

H. St. ED0 NRR E/W Willste Mail: ADM:DMB Chairman Palladino PA IE NMSS D0T:Trans only Comm. Zech ELD OIA RES Comm. Bernthal AE0D Comm. Roberts Comm. Asselstine SP //)/g Regional Offices

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ACRS SECY INP0JD.'87 NSAC/0.I CA RIII Tesident Office PDR Licensee: //.W 3 (Corp. Office - Reactor Lic. Only) 8606130094 860606 ,

Re N-Ik-86-055PDR e . No ber 1985 Oh