ML20063N260

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Loose Parts Monitoring Sys Functional Check
ML20063N260
Person / Time
Site: Shoreham File:Long Island Lighting Company icon.png
Issue date: 08/18/1982
From:
LONG ISLAND LIGHTING CO.
To:
Shared Package
ML20063N255 List:
References
44.662.02, NUDOCS 8209200139
Download: ML20063N260 (7)


Text

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SP Ntuaber 44.662.92 Revision: 9 Date Eff.:8/18/82 TPC TPC TPC LOOSE PARTS MONITORING SYSTEM FUNCTIONAL CHECK 1.0 PURPOSE To provide detailed instructions necessary to perform a functional check of the Loose Parts Monitoring (LPM) System required by Reference 11.5.

2.0 RESPONSIBILITY The I&C Engineer shall be responsible f or insuring the proper implementation of the procedure. .

PPF 1021.499-6.421

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3.0 DISCUSSION 3.1 The Loose Parts Monitoring (LPM) System is supplied by Technology for Energy Corporation (TEC) to detect impact noises in the reactor pressure vessel.

3.2 The LPM System contains four channels which monitor acoustical signals.

Each channel consists of an accelerometer, charge converter, differential transducer amplifier and an impact detector.

3.3 Two channels monitor the feeduster vessel nozzles. The other two channels ~

monitor two control rod drive housings.

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3.4 Also included in the system are control module, annunciator module, audio monitor / simulator, power monitor, and tape recorder.

3.5 All equipment is prefixed with 1B21 and located in IB21-FNL-252 unless otherwise noted.

4.0 PRECAUTIONS 4.1 Steps indicated in this procedure shall be performed in sequence.

4.2 The Watch Engineer shall be notified whenever a procedural step can not be completed as stated.

4.3 The LPM System may still receive alerts from the reactor pressure vessel.

If att alert is received, allow the system to reset automatically.

5.0 PREREQUISITES 5.1 Obtain permission and written approval of the Watch Engineer in accordance with the station surveillance program.

5.2 The LPM System is in its normal operating configuration as described in Step 8.1.1 of Reference 11.4.

5.3 Verify that the revision number and date on this station procedure are the same as the revision number and date on the statior. procedure in the Control Room master file.

5.4 The reactor is not required to be in any special condition (Condition 9) -

prior to performance of this test. However, suf ficient background noise must be present.

6.0 LIMITATIONS AND ACTIONS N/A 7.0 MATERIALS OR TEST EQUIPMENT N/A SP 44.662.02 Rev. 9 8/18/82 Page 2

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8.0 PROCEDURE INITIALS 8.1 Verify that all prerequisites of Section 5.0 have been completed.

8.2 Initial System Verification 8.2.1 Verify the LED's on EI-502, signifying vl5V, -15V, +5V,

+30V available, are illuminated.

8.2.2 Verify the OVL LED's on VBF-148A, 148B, 149A, and 1498 are indicating green.

8.2.3 Verify the STATUS LED's on VBD-148A, 148B, 149A and 149B are indicating green.

8.2.4 Verify the ALARM LED on VRA-502 is OFF.

8.2.5 Depress the Display Test Switch on VBI-502. Verify all segments of the Voltmeter Display LED on VB1-502 illuminate.

8.3 Sensor Functional Check 8.3.1 Place the Channel Select Switch on VBM-502 to channel 1 (2, 3, 4). Verify the background noise is audible.

8.3.2 Repeat Step 8.3.1 for channel 2, 3, and 4.

8.3.3 Place the Setpoint Monitor Select Switch on VBD-148A (148B, 149A, and 149B) to the "BKCD" position. Record the voltmeter reading of VBI-502 on Data Sheet 1, Appendix 12.1.

8.3.4 Place the Setpoint Monitor Select Switch on VBD-148A (148B, 149A, and 149B) to the " THRESH 0LD" position.

Record the voltmeter reading of. VB1-502 on Data Sheet 1, l

Appendix 12.1.

NOTE: The magnitude of Background and Threshold voltages should be approximately equal. The Threshold voltage will be shown as a negative ,

quantity.

8.3.5 Repeat Steps 8.3.3 and 8.3.4 for VBD-148B,149A, and 149B.

8.4 Simulator Functional Check 8.4.1 Place the Simulator Enable / Disable Switch on VBM-502 to the " ENABLE" position.

! SP 44.662.02 Rev. 0 8/18/82 Page 3 l

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_ _m 8.4.2 Depress the Simulator-lapact Switch on VBM-592 to the "lMPACT" position momentarily. Verify the following:

a) The status LED's on VBD-148A, 148B, 149A, and 149B are illuminated red.

b) The f$rst alert display on VBC-592 displays the first alert channel. Bacord the channel number on Data Sheet 1 Appendix 12.1.

c) The alarm LED on VBA-592 is illuminated. ,

d) The Control Room Annunciator Alarms. . _.

e) VBR-592 is in a forward / record mode.

8.4.3 After approxiantely one minute stop VBR-582 by depressing the "STOP" button.

8.4.4 Rewind VBR-592 to the point where the footage counter reads ~0000". Play the section just recorded.

8.4.5 Place the " METER" selector switch of VBR-592 to the " REP' position for each of the four channels, one channel at a time. Verify the following:

a) VBR-592 did record the signals from VBM-502 on each of the four channels.

b) The s'ignals as seen on the monitor meter of VBR-592 are approximately + 5 db on each of the four channels.

8.4.6 Depress the system reset switch on VBC-592 while l

simultaneously placing the Simulator Enable / Disable I

Switch on VBM-592 to the " DISABLE" position.

9.0 ACCEPTANCE CRITERLA 9.1 The sensors are functioning properly as demonstrated in Section 8.3.

! 9.2 The LPM System is functioning properly as demonstrated in Section 8.4. -

f 10.0 FINAL CONDITIONS I

l 10.1 Submit all test results in accordance with the station surveillance l program.

10.2 Upon completion of this procedure, the system is ready for operation.

Leave the Loose Parts Monitoring System in a normal operating configuration powered with no alarms - or as directed by the Watch Engineer. 4 SP 44.662.02 Rev. 0 8/18/82 Page 4 I

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11.0 REFERENCES

11.1 Shoreham FSAR 14.1.8.4 11.2 TEC Assembly Drawings 111699 92-7.81-15A thru 31A.

11.3 TEC Operations and Maintenance Manual #39963-91 T937.419 91 11.4 SP 23.662.01, Loose Parts Monitoring System 11.5 Technical Specification, Section 3/4.3.7.12 12.0 APPENDICES 12.1 Data Sheet 1, SPF 44.662.92-1 12.2 Equipment Numbers and Channel Designation l

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SP 44.662.92 Rev. 9 8/18/82 Page 5

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APPEND 1X 12.1 Page 1 of 1 DATA SHEET 1 Procedure Step .

V 8.3.3 Background Voltage of VBD-148A V -

Background Voltage of VBD-148B Background Voltage of VBD-149A V- --

V Background Voltage of VBD-149B Threshold Voltage of VBD-148A V 8.3.4 V

Threshold Voltage of VBD-148B Threshold Voltage of VBD-149A V Threshold Voltage of VBD-149B V 8.4.2 B) First Alert Channel SPF 44.662.92-1 Rev. 9 SP 44.662.02 Rev. 9 8/18/82 Page 6

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s APPENDIX 12.2 Page 1 of 1 EQUIPMENT NUMBERS AND CHANNEL DESIGNATION NOTE: All equipment numbers are prefixed by 1821.

CHANNEL #

1 2 3 4 -

Model i VBE-148A VBE-148B VBE-149A VBE-149B Endevco 2273AMI Sensor VBT-148A VBT-148B VBT-149A VBT-149B TEC-500 Chu ge Converter VBF-148A VBF-148B VBF-149A VBF-149B TEC-932 Differential Transducer Amplifier VBD-148A VBD-148B VBD-149A VBD-149B TEC-1432 Impact Detector TEC-1433C Control Module VBC-502 TEC-133C Annunciator Module VBA-502 TEC-1439 Audio Monitor / Simulator VBM-502 TEC-913 Power Supply Monitor El-502 TEC-142 Alert Setpoint Monitor VBI-502 TEC-146 Tape Rec. Interf ace VBS-502 Racal Tape Recorder VBR-502 TEC-141 AC Power Distrib. Junc. Box E/S-252 SP 44.662 02 Rev. 0 8/18/82 Page 7

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