ML20214K127

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Requests Rev to Section 2.4.3.1 of SER (NUREG-1057) to Delete Requirement for Tech Spec Mandate to Issue Flood Alert When Ohio River Exceeds 695 Mean Sea Level.Proposed Tech Specs Encl
ML20214K127
Person / Time
Site: Beaver Valley
Issue date: 08/12/1986
From: Carey J
DUQUESNE LIGHT CO.
To: Harold Denton, Tam P
Office of Nuclear Reactor Regulation
Shared Package
ML20214K130 List:
References
RTR-NUREG-1057 2NRC-6-085, 2NRC-6-85, TAC-62942, NUDOCS 8608180147
Download: ML20214K127 (3)


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'A@ l 2NRC-6-085 Beaver Valley No. 2 Unit Project Organization Telecopy ( ) 3- Ext.160 h.h.Boxi2$"' August 12, 1986 Shippingport, PA 15077 l Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation United States Nuclear Regulatory Commission Washington, DC 20555 ATTENTION: Mr. Peter Tam, Project Manager Division of PWR Licensing - A Office of Nuclear Reactor Regulation

SUBJECT:

Beaver Valley Power Station - Unit No, 2 Docket No. 50-412 SER Flood Protection Criterion Revision Gentlemen:

Duquesne Light Company (DLC) is requesting that Section 2.4.3.1 of the Beaver Valley Unit 2 Safety Evaluation Report, NUREG-1057 (SER) be revised to delete the requirement for a Technical Specification mandate to issue a " flood alert" at 690 feet msl. Through infonnal discussions with the staff, DLC has learned the bases for the subject NRC criterion and DLC believes that Beaver Valley Unit 2 adequately meets the intent of that criterion through its existing Emergency Preparedness Plan (EPP) procedures and its draft Technical Specification.

TM Beaver Valley site, which includes both Beaver Valley Units 1 and 2, currently has no criterion for issuing a " flood alert". Attached is a copy of the current proposed Beaver Valley Unit 2 Technical Specification concerning flood protection. It specifies that the plant be in HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br /> when the Ohio River exceeds 695 Mean Sea Level with increased surveillance above the 690 foot level. The Beaver Valley Unit 2 Technical Specification is an exact duplicate of the Beaver Valley Unit 1 Technical Specification, which also contains no " flood alert" criterion.

A concern was stated that the NRC should be notified during high river water level conditions. Current EPP procedures accomplish this. EPP procedure I-1 lists the recognition and classification criteria for emergency conditions for the Beaver Valley nuclear plants. Attachment 3 of this procedure (page 61) shows the DLC criterion which initiates the EPP for various flood levels. EPP Procedure IP 1.1 lists the organizations to be notified, which includes the NRC (See page 9). DLC believes these procedures which have been implemented here at Beaver Valley for Unit 1 for several years, adequately fulfills the need for NRC notification.

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United States Nuclear Regulatory Commission Mr. Harold R. Denton, Director SER Flood Protection Criterion Revision Page 2 Based on the above rationale, DLC believes there is no need for Technical Specifications to specify a new notification criterion for " flood alert" and requests that this requirement be revised in the next supplement to the SER to reflect the current Beaver Valley Unit 2 EPP procedures and Technical Specifications.

DUQUESNE LIGHT COMPANY By E. J. Carey Vice President RWF/ijr Attachment NR/ FLOOD / PROT cc: Mr. Peter Tam, Project Manager - w/ attachment Mr. L. Prividy, NRC Resident Inspector - w/ attachment

i 3/4.7 PIANT SYSTDf S 3/4.7.6 FLOOD PRUT ECTION LIMITING CONDITION FOR OPERATION 3.7.6.1 Flood protection shall be provided for all safety related l1 systems, components and structures when the water level of the Ohio River exceeds 695 feet Mean Sea Level at the intake structure.

APPLICABILITY:

At all times.

ACT ION :

With the water level at the intake structure above elevation 695 feet Mean Sea Level:

a. Be in at leas t HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within t he following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />, and
b. Initiate and complete within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, the following flood protection measures:
1. Install and seal the flood doors in the intake structure.

SURVEILLANCE REQUIREMENT S 4.7.6.1 The water level at t he intake structure shall be determined to l1 be within the limits by:

a. Measurement at le as t once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> when the water level is below elevation 690 feet Mean Sea Level, and
b. Measurement at least once per 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> when the water level is equal to to or above elevation 690 feet Mean Sea Level.

BEAVER VALLEY UNIT 2 3/4 7-16