ML20106A672

Proposed TS Table 3.3-7, Seismic Monitoring Instrumentation

ML20106A672
Person / Time
Site:	Millstone
Issue date:	09/22/1992
From:	NORTHEAST NUCLEAR ENERGY CO.
To:
Shared Package
ML20106A671	List: B14213, Application for Amend to License NPF-49,changing TS Table 3.3-7, Seismic Monitoring Instrumentation to Resolve Noncompliance W/Range of Installed SI a Accumulator Tank Discharge Line Triaxial Peak Accelerograph ML20106A672
References
NUDOCS 9209290287
Download: ML20106A672 (2)

Text

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u Docket No. 50-421 B14213.

l-o Attachment 1 Millstone Nuclear Power Station, Unit No. 3 Proposed Technical Specification Change Seismic Monitoring Instrumentation Measurement Range I

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September 1992 9209290287 920922 PDR ADOCK 05000423 .

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._- = . . . , - -

TABLE 3.3-7 SEISMIC MONITORING INSTRUMENTATION  !

MINIMUM-MEASUREMENT INSTRUMENTS INSTRUMENTS AND SENSOR LOCATIQNji RANGE OPERABLE

1. Triaxial _ Time-History Accelerographs

a. NBE20A- i 19 (5v/g) 1 Containment Mat. (-24'3")

b. NBE208 19 (Sv/g) 1 Containment Wall (40'5")

c. NBE21 19 (5v/g) 1 Emer, Generator Enclosure located on Mat in Diesel Fuel Oil Vault (4'6")

d. NBE22 19 (Sv/g) 1 Aux. Bldg. F-Line Wall Near The Charging Pumps Cooling Surge Tank (46'6")

2. Triaxial Peak Accelerographs

a. P/Al 29 1 Containment Safety injection Accum. Tank (-4'7")

b. P/A2 29 1 Safety Injection Accum Disch.

Line (-22'10")

c. P/A3 i 19 1 Aux. Bldg. Charging Pumps Cooling Surge Tank (46'E ;

3a. Triaxial Seismic Trigger Horizontal .01g 1*

(Control Room)

Vertical .006g 1*

(Control Room) 3b. Triaxial Seismic Switch Horizontal .09g 1**

(Control Room)

Vertical .06g 1**

(Control Room)

4. Triaxial Response-Spectrum Recorders

a. RSA-50 Spectrum Analyzer 1-32 Hz 1*

(Control Room) Peak Acceleration in Gs (Max of Ig)

b. Self-Contained Recorder 0-30 Hz at i 29 1 Steam Generator Support-(51'4")

,- *With reactor control room indicator. This unit is activated by signals from l the NBE20A Triaxial Accelerograph.

j **This unit is-activated by signals from the NBE20A Triaxial Accelerograph and l

is connected to an-annunciator in the reactor control room.

MILLSTONE - UNIT 3 3/4 3-48 coes -