ML19262A039

Tech Spec Change Request 40,modifying Tech Specs 3-4.3.3 Re Use of Quarter Core Flux Maps to Recalibr ex-core Neutron Flux Detection Sys

ML19262A039
Person / Time
Site:	Beaver Valley
Issue date:	10/23/1979
From:	DUQUESNE LIGHT CO.
To:
Shared Package
ML19262A035	List: ML19262A034 ML19262A039
References
TAC-12373, NUDOCS 7910260175
Download: ML19262A039 (2)

Text

. ..

ATTACIDIENT INSTRUMENTATION BASES 3L4.3.3 MONITORING INSTRUMENTATION 3/4.3.3.1 RADIATION MONITORING INSTRUMENTATION The OPERABILITY of the radiation monitoring channels ensures that

1) the radiation levels are continually measured in the areas served by the individual channels and 2) the alarm or automatic action is initiated when the radiation level trip setpoint is exceeded.

3/4.4.4.3 MOVABLE INCORE DETECTORS The OPERABILITY of the movable incore detectors with the specified minimum complement of equipment ensures that the measurements obtained from use of this system accurately represent the spatial neutron flux distribution of the reactor core. The OPERABILITY of this system is demonstrated by irradiating each detector used and determining the acceptability of its voltage curve.

For the purpose of measuring QF (Z) or F.3"H, a full incore flux map is used. Quarter-core flux maps, as defined in WCAP-8648, June 1976, may be used in recalibration of the excore neutron flux detection system, and full incore flux maps or symmetric incore thimbles may be used for monitoring the Quadrant Power Tilt Ratio when one Power Range Channel is inoperable.

3/4.3.3.3 SEISMIC INSTRUMENTATION The OPERABILITY of the seismic instrumentation ensures that sufficient capability is available to promptly determine the magnitude of a seismic event and evaluate the response of those features important to safety. This capability is required to permit comparison of the measured responss to that used in the design basis for the facility and is consistent with the recommendations of Regulatory Guide 1.12, " Instrumentation for Earthquakes."

3/4.3.3.4 METEOROLOGICAL INSTRUr4ENTATION The OPERABILITY of the meteorological instrumentation ensures that sufficient meteorological data is available for estimating potential radiation doses to the public as a result of routine or accidental release of radioactive materials to the atmosphere. This capability is required to evaluate the need for initiating protective measures to protect the nealth and safety of the public and is consistent with the recommendations of Regulatory Guide 1.23, "0nsite Meteorological Programs."

BEAVER VALLEY - UNIT 1 B 3/4 3-2 1215 083 7910260175

(CORPORATE SEAL) -

Attest:

Of' H. W. Staas Secretary COMMONWEALTH OF PENNSYLVANIA)

) SS:

COUNTY OF ALLEGIENY )

On this EGM day of M ,, 1979, before me, HENRY G. ST0ECKER , a Notary Public in and for said Commonw2alth and County, personally appeared E. J. Woolever, who being duly sworn, deposed, and said that (1) he is Vice President of Duquesne Light, (2) he is duly authorized to execute and file the foregoing Submittal on behalf of said Company, and (3) the statements set forth in the Sub-mittal are true and correct to the best of his knowledge, information and belief.

e.

ENRY G. S70ECKER, Notary blic ht'sbu@. Allegheny County, Pa.

M/Commiss>on Escwes February 20.1582 4

1215 084