ML19308A555

RO 76-36/1P:on 761012,plant River Water Discharge Dissolved Solids Exceeded Specified Limit Per ETS During Release of Waste Neutralizing Tank.Caused by Excessive Opening of Valve &/Or Nonrepresentative Sample.Investigation Planned

ML19308A555
Person / Time
Site:	Three Mile Island
Issue date:	10/13/1976
From:	Colitz J METROPOLITAN EDISON CO.
To:
References
NUDOCS 7911010712
Download: ML19308A555 (2)

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METROPOLITAN EDISON COMPANY

' 7C c.- T L t F A-oNt 717 ? ' i 4C41 Post or e tcc eox 4.0 * *iDOt F OWN. PENNSVL VJ.N J.

. 13 October 1976 Mr. J. P. O'Reilly, Director phb

}%ggjggb.d Directorate of Regulatery Oceration 00QD U W)

Regicn i

uclear Regulatory Cc inissico 630 Park Avenue t'ing oi Prussia, Penna. 19406 Operating !.icense 0.R-5' Docket 50-289 Su' ject

Reportable Occurrence fic. 76-36/IP

Dear Mr. O'Reilly:

This telecrar. is to confirm the discussion between Mr. Anthony Fasanc (Region I-!;RC)'and Fr. G. A. Kunder (Supervisor of Operaticos Unit' ;-Tr:)

at 0910 hours0.0105 days <br />0.253 hours <br />0.0015 weeks <br />3.46255e-4 months <br />,13 0:tober 1976 at Three "ile island.

A violaticn of the Enviren ental Technical Specification 2.2.2.3 (Page 10) occurred in that the Plant River Water Discharce ci,sclved sclids exceeded the limit c' 700 op, raxir.;, en 12 Octcher 1976, carin:: the relean of a waste neatrilizing tank. Analysis of the dissolved solids in tr.e F139; River Water Distnarge on 12 October 1976 was 772 com. Reanalysis imi .ne::

735 ppa. The total volure released frcn the Tanr. was a,nproxirately 51, 30 gallons.

It is not precisely kncan what caused the incident; however, it is believed that either the !'eutralizing Tank discnarge valve Sy n5vc crened rare than the recuired position or the sarple ccliected at the discharge

- Was not truly representative. Durie.o the oiscnarge, t'ie valve scsiticn was personnally verified to be in its co-rect position, so it is re cte!*.

cossible, that a spuricus centrol prcbic could hSve opened the vilee fur *ns .

but this can neit*:er be ccnfir ed nor absolutely disprcved. Mditicnally, the sar;'le technique is being investigated to determine the pcssi::ility of collecting a misrepresentative sarple.

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a "r. J. P. O'Reilly 13 October 1976 Both of these 0055ible CaV5e5 will te i'P.'esticated tc the deyce '

possible and any ap; ro::riate corrective action s;i'i Se tp:en.

Very truly ycurs, t /

J. J. Colitz Unit 1 Sucerintendent Three "fle island .*;aclear Station i

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