ML19326D068

Forwards Nonroutine Nonradiological Environ Rept 50-313/75-61

ML19326D068
Person / Time
Site:	Arkansas Nuclear
Issue date:	12/26/1975
From:	Pettit A ARKANSAS POWER & LIGHT CO.
To:	Howard E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
14386, NUDOCS 8004300694
Download: ML19326D068 (2)

Text

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'e H E L PIN G Ultit O A H k A N t* A H ARK ANS AS POWER & LIGHT COMPANY t.lT TLE AOCK. A AK ANSAS 72203 1501) 371-4000 97H G LOUISt AN A BT AEETS Decembe

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Ri;gion IV U. S. Nuclear Regulatory Commission e - ~ C311975 * *~-

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Subject:

Arkansas Power G Light Cc,mpany A Arkansas Nuclear One-Unit 1 Docket No. 50-313 License No. DPR-51 Non-Routine, Non-Radiological Environmental Report No. 50-313/75

Dear Mr. Iloward:

On December 16, 1975 we reported to you an environmental occurrence at Arkansas Nuclear One-Unit 1 involving the increase of several chemical parameters across the plant in excess of Environmental Technical Specification limits.

Attached find our report in accordance with Environmental Technical Specification 5.6.2.

Very truly yours, Uh t

IHIS DOCUMENT CONTA!NS Arch P. Pettit Senior Vice President P00R QUAUTY PAGES APP:ay Attachment Mr. W. D. MacDonald, Director cc: Mr. D. F. Knuth, Director Office of Management Information G Office of Inspection G Enforcement U. S. Nuclear Regulatory Consnission Program Control Washington, D. C. 20555 U. S. Nucicar Regulatory Commission I

Washington, D. C. 20555 14386 T Ax P AYING, INVESTO A OWNED MEMBE A MICOLE SOUTH UTILITIE7 SYSTEM

_NRCi TRIBul!ON FOR PART 50 DOCl& . MATERI AL

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CONTROL NO:_ 14386-8 '

FILE: I MRonMrDi FROM: Arkansas Power & Light Co . DATE OF DOC ~

DATE REC'D LTR TWX RPT

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12-31-75 ^XXX , "

~~~~~~. ORIG X CC OTHER SENTNRC PDR E. Morris Howard 1 . 19 Signec XXX i CLASS UNCLASS SENT LOCAL PDR--

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XXX DESCRIPTION:

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ENCLOSURES: ~

Letter trans the following .....

Environmental Report # 75-61, on 12-16-75, l

Concerning the. increase of several chemical parameters across the plant. . . . . ..

(20 Cys. Recieved)'

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- PLANT NAME. . Arkansas # 1 I .

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BOYD STELLO J. LEE (L) PLANS MC' ORE (L) HOUSTON M. RU3HBROOK(L) MCDONALD

_ ENVIRO DEYOUNG (L) NOVAK S. REED (E) CHAPMAN MULLER SKOVHOLT (L) ROSS DICKER M. SERVICE (L) DUBE (Ltr)

GOLLER (L) (Ltr) IPPOLITO KNIGHTON S. SHEPPARD (L) E. COUPE P. CO L LINS TEDESCO M. SLATER (E) PETERSON DENISE .YOUNGBLOOD H. SMITH (L) tJrCOLLINS REGAN HARTFIELD (2)

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1. Non-Routine, Non-Radiological Environmental Report No. 50-313/75-61

2. Report Date: 12-26-75 3. Occurrence Date: 12-16-75

4. Facility: Arkansas Nuclear One-Unit 1

-Russellville, Arkansas

5. Identification of Occurrence: Chemical concentration of two (2) parameters increased across the plant in excess of Environmental Technical Specification limits.

6. Conditions Prior to Occurrence:

Steady-State Power X Reactor Power 2542 MWth Hot Standby Net Output 836 MWe Cold Shutdown Percent of Full Power 99 **

Refueling Shutdown Load Changes During Routine Power ~ Operation c Routine Startup Operation Routine Shutdown Operation Other (specify)

7. Description of Occurrence: Samples taken from the intake and discharge canals and at point 20 on 12-15-75 indicate that the chemical concentra-tions of two (2) parameters increased across the plant in excess of ETS limits as follows:

Parameters Units Increase ETS limit Conductivity (intake vs. discharge) ** 10.8 10 Chlorides (point 20 vs. discharge) mg/l 70 25 YRO9/00f?(

.- . i Non-Routine, Non-Radiological Environmental Report No. 50-313/75-61

8. Designation of Apparent 'ause of Occurrence:

,. Design Procedure Manufacture Unusual Service Condition Including Environmental Installation /

Construction ' Component Failure Operator -

Other (specify) X Neutralizing tank was draining into the discharge fiume at time of sampling.

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9. Analysis of Occurrence:

The neutralizing tak which contains water imputities remaining after regenerating condensate demineralizers and plant makeup water demineral-izers was being drained into the discharge fiume when samples were taken. No other liquid releases were in progress at time of sampling.

Four circulating water pumps were running providing approximately 750,000 gpm dilution flow.

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'Non-Routine, Non-Ra*iological Environmental Report No. 50-313/75-61

10. Corrective Action:

Revisions to Environmental Technical Specifications concerning chemical discharges have been prepared and submitted to the NRC for approval, d

11. Failure Data:

The circumstances of this report are similar to those . reported in

.Non-Routine, Non-Radiological Environmental Reports No. 50-313/75-28 through 50-313/75-60.

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