ML20246B697

Annual Environ Operating Rept,1988

ML20246B697
Person / Time
Site:	Seabrook
Issue date:	12/31/1988
From:	PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:
Shared Package
ML20246B660	List: ML20246B657 ML20246B697 ML20246B717 ML20246B743 ML20246B834
References
NUDOCS 8905090143
Download: ML20246B697 (3)

Text

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a ENCLOSURE TO NYN-89050 SEABROOK STATION ANNUAL ENVIRONMENTAL OPERATING REPORT JANUARY 1, 1988 TO DECEMBER 31, 1988

1. Preonerational Program The Preoperational Environmental Studies Program at Seabrook Station spans the period for 1975 to date. Attachment 1 tc chis enclosure is Technical Report XIX-II, which summarizes environmental data results from 1975. A summarization report for 1988 is not yet available, but will be forwarded as part of the 1989 submittal.

2. Environmental Protection Plan Activities for Reporting Period j Acuatic Monitoring Attachment 2 to this enclosure is the 1987 follow-up report on the

" Determination of Neoplasia in Soft-Shell Clams Mya arenaria Near j the Seabrook Nuclear Plant". The initial study, was done to j document the prevalence of neoplasia, a source of mortality within  !

soft-shell clams near Seabrook Station. J I

Attachment 3 to this enclosure is the Chlorine Usage Minimization Program (CMP) Status Report for the period of September 1987 to July 1988. As discussed with the E.P.A., this reporting period was extended to include additional onsite inspections and activities in I support of the proposed operational program.

Attachment 4 is the report "Seabrook Station Offsite chlorine Minimization Study 1987". This report provides the data obtained by Normandeau Associates at an offsite test facility and summarizes the results in support of the onsite chlorine management program to be utilized during station operation.

Terrestrial Monitoring No Applicable Noise Monitoring Not Applicable

3. EPP Non-Compliance and Corrective Actions There were 15 exceptions noted and reported in the Seabrook Station Discharge Monitoring Report (DMR) for the period (Jan. - Dec. 1988).

A summary description of those exceedances is provided below. The number in parenthesis indicates the number of exceedances reported each month.

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890UO90143 890428 PDR ADOCK 0500 R

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EXCEEDANCE COMHENTS JANUARY Turbidity (1) Heavy snow melt pH (2) Temporary upset condition Technician error FEBRUARY Boron (1) Discharge of waste test tank at an excessive rate' Turbidity (2); Heavy. precipitation MARCH Turbidity (2) Heavy precipitation APRIL pH (1) Heavy precipitation subsequent to an algri bloom MAY Turbidity (1) Heavy precipitation

- pH (1) Rainwater drainage through

' fly ash in auxiliary boiler.

stack (note 1)

JUNE None JULY None AUGUST pH (1)- Rainwater drainage through fly ash in auxiliary boiler stack (note 1)

SEPTEMBER Glycol (1) Temporary leak caused by a faulty gasket on a heat exchanger (note 2) 2

_ _ _ _ _ ._ _ -___________O

EXCEEDANCE COMMENTS OCTOBER Glycol (1) Improper system operation NOVEMBER None DECEMBER pH (1) Temporarily out of j specification following a maintenance outage of the Sewage Treatment Plant aeration system FOOTNOTES I 1. Fly ash removal from the auxiliary boiler stack is a I

repetitive task; nonetheless a pH exceedance may occur if l rainfall becomes heavy and sustained.

2. As a result of this occurrence, all glycol systems have been evaluated and incompatible gaskets are being replaced.

4. Channes to Plant Desinn or Operation No changes to plant design or operation that involved an unreviewed environmental question occurred during this reporting period.

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5. Non-routine Reports There were no non-routine reports generated during this reporting period.

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