ML20106A672
| ML20106A672 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 09/22/1992 |
| From: | NORTHEAST NUCLEAR ENERGY CO. |
| To: | |
| Shared Package | |
| ML20106A671 | List: |
| References | |
| NUDOCS 9209290287 | |
| Download: ML20106A672 (2) | |
Text
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Docket No. 50-421 u
B14213.
l-o 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 p-PDR
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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.
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- This unit is-activated by signals from the NBE20A Triaxial Accelerograph and is connected to an-annunciator in the reactor control room.
l MILLSTONE - UNIT 3 3/4 3-48 coes
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