ML20063B823

NPDES Noncompliance Notification:On 940104,plant Intake Embayment Dissolved Oxygen Instrumentation Found Damaged. Caused by Failed Oxygen Probe.Probe Repaired

ML20063B823
Person / Time
Site:	Calvert Cliffs
Issue date:	01/07/1994
From:	Cruse C BALTIMORE GAS & ELECTRIC CO.
To:	MARYLAND, STATE OF
Shared Package
ML20063B818	List: ML20063B814 ML20063B823
References
NUDOCS 9402030019
Download: ML20063B823 (1)

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. BALTIMORE GAS AND ELECTRIC e

CALVERT CLIFFS NUCLEAR POWER PLANT ,

1650 CALVERT CLIFFS PARKWAY

• LUSBY, MARYLAND 20657-4702 CHARLES H. CRUSE PLANT GENERAL MANAGER ,

CALVERT CUFFS '

January 7,1994 Carol J. Coates State of MD- Department of the Environment  ;

Water Management Administration 2400 Broening Highway Baltimore, Maryland 21224 l 4

Dear Ms. Coates:

l l' RE: NPDES Permit Special Condition A3 Noncompliance January 4,1994 NPDES Discharoe Permit MD0002399A. State Permit 86-DP-0187A On January 4,1994, during a routine surveillance of the continuous monitoririg equipment required by i the Calvert Cliffs Nuclear Power Plant site NPDES permit, the plant intake embayment dissolved oxygen i g instrumentation was found to be damaged. Since this is only a surveillance monitoring requirement, there was no indication of a noncompliance with effluent limitations.

l The cause of the malfunction was determined to be a failed oxygen probe. The probe was repaired and ~

the instrumentation was retumed to service on January 5,1994 at 1200 hrs. The oxygen continuous j

monitoring equipment was out of service for less than twenty four hours. As a compensatory measure, oxygen concentrations were taken on the plant intake embayment every four hours until the continuous monitoring equipment was retumed to service.

Although technically this is not an NPDES permit violation, after consultation with your office, it was drided to submit this as a permit non-compliance. We request your interpretation on this matter to ensure future notifications are proper.

l l

Sincerely n /p;a / .p-Aharles H. Cruse K,/

CHC:PTC:jas cc: E.1. Bauereis J.F. Stine

( R.A. Kreger

[ 9402030019 940107 3-g I

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