ML20215C049
| ML20215C049 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 11/26/1986 |
| From: | Mcdonald R ALABAMA POWER CO. |
| To: | Verrelli D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| IEB-81-03, IEB-81-3, NUDOCS 8612150009 | |
| Download: ML20215C049 (2) | |
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[ Alabama Power pany-l A". '
' 600 North 18th Street 5
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- kA EAlabama R.F.McDoneM.,
- Senior Vice President -~
thesouthemelectrbsystem
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November 26, 1986'
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-Docket No. 50-348.
Docket No. 50-364 Mr.-D..M. Verrelli.
LU. S.. Nuclear Regulatory Comutission Region II:
- 101 Marietta Stteet, N.W.
Suite 3100:
Atlanta, G<eorgia'30323
SUBJECT:
J.'M. Farley Nuclear Plant NRC Inspection of August 25 - 28, 1986 RE:
Report Number 50-348/86-18 Report Number 50-364/86-18
Dear Mr. Verrelli:
his letter refers to the deviation cited in the subject inspection reports which state:
"Farley Nuclear Plant FSAR, subsection 9.2.1.6, states that prevention of organic fouling in the plant' service water system piping and equipment will be accomplished by intermittent chlorination of the service water. We licensee further stated in response to IE Bulletin 81-03, dated May 26, 1986, item 5.e., that the planned corrective and preventive action to control organic fouling for Farley Units 1 and 2 is to continue the i
chlorination program at the service water intake structure. he I
chlorination program consisted of chlorinating at a concentration of 0.5 ppm at the cooling pond intake structure for three 45-minute periods per
-day.
I contrary to the above, the FSAR and IE Bulletin response commitment for chlorinating the service water system during the period from January 1982 to March 1983, was not met when the chlorination system was out of service.
It appears that this contributed to larval clams entering the plant through the service water system, causing fouling of service water system piping and components. No compensatory measures were inplemented for prevention of oroanic fouling of the service water system."
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- Mr.'D.'MiVerrelli' Ncwomber 26,~1986
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- Admission'or' Denial.
'Ihe above deviation occurred as described in the subject reports. However,
- no adverse' condition occurred as a result of the deviation'because it has now
' been determined that the prescribed program is_not effective for Corbicula. ~
The temporary inability to perform the chlorination program committed to~in-
. the I.E.'Bulletin 81-03 response was evaluated to-have had.no effect on-service water system fouling caused by Corbicula; however, the plant staff' Edid not recognize at that time that the inoperability of the service water
' chlorination system was a deviation from the chlorination program committed-1 to in the response to I.E.Bulletin 81-03 and discussed in the FSAR.-
'Ite continuous. series of system failures Gat occurred during attempted system start-ops was not anticipated. During the time period that the
. system was out of service, the plant staff did not perform documented reviews to determine the consequences of not chlorinating the. service water system'or evaluate the need for compensatory measures. Restoring the system to an operable status and continuing.the chlorination program _
committed to. appeared to be an appropriate and sufficient course of action at'the time and was believed to be achievable withJn'a time frame that-would not cause any increased risk of-service water fouling due to Corbicula, which, after the fact, has now been determined to be correct.:
Corrective Action Taken 1.
An experimental program to determine an effective chlorination program is
- currently being conducted. Chlorination concentration levels and injection cycle schedules necessary for control of Corbicula are included in this program.
2.
Deviations from the I.E.Bulletin 81-03 commitment have been evaluated as acceptable during the time pericd for this experimental program.
l Corrective Steps to Avoid Futher Deviations
[
1he importance of the chlorination system to plant operations and the need
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for evaluation of compensatory measures if the chlorination is not working properly have been discussed with appropriate plant managers.
Date of Full Compliance i
November 7, 1987 Yours very ruly Q'
l R. P. Mcdonald RPM:emb i'
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