ML19341A262

Forwards LER 81-001/04T-0

ML19341A262
Person / Time
Site:	Peach Bottom
Issue date:	01/12/1981
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19341A263	List: ML19341A262 ML19341A265
References
NUDOCS 8101220488
Download: ML19341A262 (2)

Text

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PHII.ADELPHIA ELECTRIC COMPANY 2301 MARKET STREET P.O. BOX 8699 PHILADELPHI A. PA.19101 1215l E41-4000

~~

January 12, 1981 Mr. Boyce H. Grier , Director Office of Inspection and En forc ement Region I US Nuclear Regulatory Commission 631 Park Avenue King of Prussia , PA 19406

SUBJECT:

LICENSEE EVENT REPORT NARRATIVE DESCRIPTION

Dear Mr. Grier:

The following occurrence was reported to Mr. John McCann, Region I, Office of Inspection and Enforcement on January 2, ,

1981.

Reference:

Docket No . 50-277 Report No.: 2-81-01/4T Report Date: January 12, 1981 Occurrence Date: January 2, 1981 Facility: Peach Bottom Atomic Power Station RD #1, Delta, PA 17314 Technical Soecification

Reference:

Environmental Technical Specification 2.2.1 states in part that "... The total period of chlorine addition to the condenser circulating water systems shall not exceed two hours per day."

Description of the Ev ent :

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On October 19, 1980 the Peach mttom circulating water system was chlorin'ated for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and 30 minutes, exceeding the two hour limit by 30 minutes. Each of six condenser water box bays was chlorinated 25 minutes by the operator instead of the 8 10 Jer g y -

• - Page 2 normal period of 15 minutes. The excessive chlorination period was discovered during review of a report containing thi,s chlorination data on January 2, 1981. .

Probable Consequences of the Occurrence:

Review of chlorine residuals recorded during the event disclosed that there was no significant incredse in chlorine residuals discharged from the circulating water system.

Cause of the Event:

A non-licensed operator was having difficulty obtaining sufficient chlorinator flow so he extended the period of chlorination without consulting supervision.

Corrective Actions:

Non-licensed per.sonnel normally involved in circulating water chlorination were retrained by reviewing the event in shift meetings between January 9 and 11, 1981. Instructions have been posted at the chlorination control panel to further reinforce '

proper circulating water chlorination technique.

The surveillance test used for circulating water chlorination is being revised to further clarify allowable chlorination times.

Very truly yours.

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'M. J. Cooney Superintendent G~eneration Division - Nuclear Attac hment cc: Director, NRC - Of fice of Inspection and En forc em ent Mr. Norman M. Haller, NRC - Office of Management &

Program Analysis ,

.