ML20078A082

Proposed Tech Specs Re Channel Check Requirement for Triaxial Time History Accelerographs

ML20078A082
Person / Time
Site:	Arkansas Nuclear
Issue date:	09/15/1983
From:	ARKANSAS POWER & LIGHT CO.
To:
Shared Package
ML20078A010	List: 2CAN098305, Application to Amend License NPF-6,allowing Channel Check Requirement for Triaxial Time History Accelerographs. Request Replaces 791023 Application to Delete Calibr Requirements ML20078A082
References
NUDOCS 8309220222
Download: ML20078A082 (3)

Text

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INSTRUMENTATION SEISMIC INSTRUMENTATION LIMITING CONDITION FOR OPERATION 3.3.3.3 The seismic monitoring instrumentatton shown in Table 3.3-7 shall be OPERABLE.

APPLICABILITY: At all times.

ACTION:

l a.

With one or more seismic monitoring instruments inoperable for more than 30 days, prepare and submit a Special Report to the l

Commission pursuant to Specification 6.9.2 within the next 10 days outlining the cause of the malfunction and the plans for I

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restoring the instrument (s) to OPERABLE status.

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b.

The provisions of Specifications 3.0.3 and 3.0.4 are not applicable.

SURVEILLANCE REQUIREMENTS 4.3.3.3.1 Each of the above seismic monitoring instruments shall be demonstrated OPERABLE by the performance f the CHANNEL CHECK, CHANNEL CALIBRATION and CHANNEL FUNCTIONAL TEST opertions at the frequencies shown in Table 4.3-4.

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4.3.3.3.2 EACH OF the above seismic monitoring instruments actuated during a seismic event shall be restored to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> and a CHANNEL CALIBRATION performed within 5 days following the seismic event.

Data shall be retrieved from actuated instruments and analyzed to determine the magnitude of the vibratory' ground motion.

A Special Report shall be prepared and submitted to the Commission pursuant to Specification 6.9.2 within 10 days describing the magnitude, frequency spectrum and resultant effect upon facility features important to safety.

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ARKANSAS - UNIT 2 3/4 3-30

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8309220222 830915 PDR ADOCK 05000368 P

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TABLE 3.3-7 SEISMIC MONITORING INSTRUMENTATION MINIMUM MEASUREMENT INSTRUMENT INSTRUMENTS AND SENSOR LOCATI0ilS RANGE OPERABLE 1.

Triaxial Time-History Accelerographs a.

ACS-8003, Unit 1 Containment Base. Slab, Elev. 335'*

0.01-1.0g 1

b.

ACS-8004, Unit 1 Top of Containment, Elev. 531'6"*

0.01-1.0g 1

2.

Triaxial Peak Accelerographs a.

2CR-8347, Containment Base Slab, Elev. 336'6" 0.01-1.0g 1

b.

2XR-8348, Primary Shield 0/S Reactor Cavity, Elev. 366'3" 0.05-1.0g I

c.

2XR-8349, Top of Containment, Elev 531'6" 0.051-1.0g 1

3.

Triaxial' Response-Spectrum Recorders a.

2CR-8350, Containment Base Slab, 2-25.4 Hz 1

Elev. 305'6" (0/S Containment)

• With Unit 1 control room indication /or alarm ARKANSAS - UNIT 2 3/4 3-31

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TABLE 4.3-4 SEISMIC MONITORING INSTRUMENTATIN SURVEILLANCE REQUIREMENTS CHANNEL CHANNEL CHANNEL FUNCTIONAL INSTRUMENTS AND SENSOR LOCATIONS CHECK CALIBRATION TEST 1.

Triaxial Time-History Accelerogrphs

a. ACS-8003, Unit 1 Containment Base Slab, Elev, 335'**

M*

R SA

b. ACS-8004, Unit 1 Top of Containment Elev. 531'6"**

M*

R SA 2.

Triaxial Peak Accelerographs

a. 2XR-8347, Containment Base Slab, Elev. 336'6" NA R

NA

b. 2XR-8348, Primary Shield 0/S reactor Cavity, Elev, 366'3" NA R

NA c.-2XR-8349, Top of Containment, Elev.

531'6" NA R

NA 3.

Triaxial Response-Spectrum Recorders

a. 2XR-8350, Containment Base Slab, l

Elev, 335'6" (0/5 Containment)

NA R

R

• Except seismic trigger

• • With Unit 1 control room indication ARKANSAS - UNIT 2 3/4 3-32

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