ML20063N257

Loose Parts Monitoring Sys Calibr

ML20063N257
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: ML20063N254 ML20063N256 ML20063N257 ML20063N260 ML20063N261
References
44.662.01, NUDOCS 8209200135
Download: ML20063N257 (12)

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SP Number 44.662.01 Revision 9 Date Eff 8/18/82 TPC TPC TPC LOOSE PARTS MONITORING SYSTEM CALIBRATION 1.0 PURPOSE To provide detailed' instructions necessary to perform the channel calibration of the Loose Parts Monitoring (LPM) system required by Reference 11.5.

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

the procedure.

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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 feedwater vessel nozzles. The other two channels monitor two control rod drive housings.

3.4 Also included in the system are Control Module, Annunciator Modu.'e, Audio Monitor / Simulator, Power Monitor and Tape Recorder.

3.5 Table of Contents Page 8.0 Procedure 3 8.2 Initial Set-up 3 8.3 Internal Simulator and Tape Recorder Test 5 8.4 System Sensitivity Test 6 8.5 System Alarm and Inhibit Test 8 Appendix 12.1 Data Sheet 1&2 Appendix 12.2 Equipment Numbers and Channel Designation 4.0 PRECAUTIONS ~

4.1 Steps indicated in this procedure whall be performed in sequence.

4.2 The Watch Engineer shall be notified whenever s procedural step can not be completed as stated or if any other problems develop during the test.

4.3 The input cable from the sensors should never be connected to the Tec 500 charge converter without shorting the center conductor of the cable to the shield to remove any charge from the sensor. Never touch the input to the charge converter. Failure to follow these cautions could result in irreparable damage to the TEC 560 charge converter.

! 5.0 PREREQUISITES .

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

i 5.2 The reactor shall be in cold ' shutdown or refueling (conditions 4 and 5) prior to performance of this test.

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i 5.3 Verify that the revision" number and date on this station procedure are the same as the revision number E d date on the station procedure in the control room master file.

5.4 Radiation work permits and unintenance work requests are filled out in accordance with station procedures.

5.5 Communication channels have been established between the control roon (IB21-PNL-252) and the sensor locations.

5.6 Test equipment required for this procedure shall be functional and the calibration due dates shall not have expired. .

6.0 LIMITATIONS AND ACTIONS N/A 7.0 MATERIALS OR TEST EQUIPMENT 7.1 Digital Voltmeter 7.2 Storage Osciloscope 7.3 Calibrated Impact Device i

I Initials 8.0 PROCEDURE l 8.1 Verify that all prerequisites of Section 5.0 have been completed.

8.2 Initial Set-up 8.2.1 a) Place the Main AC power switch on IB21-E/S-252 to the ON position.

b) Place the power switch on IB21-El-502 to the ON position.

c) Verify the LED's on IB21-El-592, signifying +15V, l

-15V, +5V, +30V available, are illuminated.

1 8.2.2 Connect a Digital Voltmeter across the input of 1B21-VBF-148A (148B,149A and 149B). Use the center conductor of the + and - transducer ENC connectors. ~

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Record the measured voltage on Data Sheet 1, Appendix l 12.1.

l 8.2.3 Repeat Step 8.2.2 for 1B21-VBF-148B, 149A and 149B.

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., g 8.2.4 Depress the system RESET switch on 1821-VBC-592 while simultaneously placing the simulator ENABLE / DISABLE switch on IB21-VBM-592 to the ENABLE position.

8.2.5 Adjust 1B21-VBF-14BA (1488,149A and 1498) "LP 3 DB" point select switches to 59 KHz.

8.2.6 Adjust 1821-VBF-148A (1488,149A and 1498) Gain Select switch to produce a Green indication on 1821-VBD-148A

.(148B,149A and 1495) status LED. Record the position of the Gain Select switch on Data Sheet 1 Appendix 12.1.

8.2.7 Place the Setpoint Monitor Select switch on 1B21-VBD-148A (148B,149A and 1498) to the "BKGD" position. Record the voltmeter reading of IB21-VB1-592 on Data Sheet 1, Appendix 12.1.

8.2.8 Place the Setpoint Monitor Select switch on IB21-VBD-148A (148B, 149A and 149B) to the " THRESHOLD" position.

1 Record the voltmeter reading of 1B21-VB1-592 on Data Sheet 1, Appendix 12.1.

NOTE: The threshold voltage will be a negative value.

This is used only to distinguish between the background and threshold voltage.

8.2.9 Holding the Setpoint Monitor Select switch to the

" THRESHOLD" position, adjust the Alert Setpoint (the recessed trismer potentiometer on the front panel) of 1B21-VBD-148A (148B,149A and 149B) until the Threshold l voltage is as close to the Background voltage as possible. Record the "AS LEFT" Threshold voltage on Data Sheet 1, Appendix 12.1.

8.2.10 Depress the system RESET switch on 1B21-VBC-592 while i

simultaneously placing the simulator ENABLE / DISABLE

! switch on 1B21-VBM-592 to the DISABLE position.

8.2.11 Repeat Steps 8.2.5 to 8.2.10 for channel 2, 3 and 4 (148B, 149A and 149B).

8.2.12 Verify that the following switches and controls are in the position indicated below: ,

a) IB21-VBF-148A (148B,149A and 149B) "LP 3 DB" Point Select switch set at 59 KHZ.

i b) IB21-VBC-592 AUTO RESET Period Select switch set in the ENABLE position.

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c) IB21-VBF-148A (148B,149A and 149B) Gain Select switch set to produce a Creen indication on IB21-VBD-148A (148B,149A and 1495) status LED.

Note: Sufficient background noise mzst be present.

d) IB21-VBC-592 (DPMD INH) Deliberate Plant Maneuver Detector Inhibit switch set to the' AUTO position.

e) IB21-VBA-592 Alaru Inhibit switch set in the ON position, i.e. the inhibit LED is illuminated.

IB21-VBM-592 Volume control set approximately at the - - - -

f) 9 o' clock position.

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g) IB21-VBM-592 Simulator ENABLE / DISABLE switch is placed in the ENABLE position.

h) IB21-VBS-592 Auto Start Select switch is placed in the ENABLE position.

1) 1B21-VBS-592 Tape Speed Select switch is set to 7-1/2 IPS.

8.2.13 Repeat Step 8.2.12 Section A and C for IB21-VBF-148B, 14,A and 149B.

8.3 Internal Simulator and Tape Recorder Test 8.3.1 a) Place the Volts Peak switches on IB21-VBR-502 to the "1" position for each of the four channels.

b) Place the Response switch to " Peak".

c) Reset the Tape Recorder Footage Counter to read

• 0020".

8.3.2 Place the " Meter" switch on 1B21-VBR-502 to the REC positiou for each of the four channels.

Note: There is only one " Meter" switch that must be placed in all four REC positions. ,

8.3.3 Depress the Simulator Impact switch on IB21-VBM-502 to the IMPACT position momentarilly. Verify the following:

a) The status LEDS on 1B21-VBD-148A,14BB,149A and 149B are illuminated Red.

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l b) 1321-VBR-592 is in a' FORWARD / RECORD mode.

c) The Simulated lupact from 1821-VBM-592 is audible.

If it is not, adjust the volume control on 1821-VEM-592.

d) The first alert display on 1521-VBC-592 displays the first. alert' channel. Record the channel number on

• Data Sheet 2, Appendix 12.1.

e) The alarm LED on 1521-VBA-592 is illuminated.

f) The Control Room annunciator alarms.

't Note: While recording, the meter on IB21-VBR-592 should read approximately 4p db on each channel.

8.3.4 Af ter approximately five minutes stop 1B21-VBR-592 by j depressing the "STOP" button.

8.3.5 Rewind IB21-VBR-592 to the point where the footage counter reads "0000". Play the section just recorded.

8.3.6 Place the " Meter" Selector switch of IB21-VBR-592 to the

" REP" position for each of the four channels, one channel at a time. Verify the following:

a) IB21-VBR-592 did record the signals from IB21-VBM-592 on each of the four channels. -

b) The signals as seen on the monitor meter of IB21-VBR-592 are approximately +5db on each of the four channels.

I 8.3.7 Depress the system reset switch on 1B21-vBC-592 while simultaneously placing the Simulator ENABLE / DISABLE I switch on 1B21-VBM-592 to the DISABLE position.

i 8.4 System Sensitivity Test l

l Note: Background noise must be present and of sufficien; amplitude to give a Green indication on the status LED of ,

1B21-VBD-148A (148B,149A and 149B).

8.4.1 Place the Setpoint Monitor Select switch on IB21-VBD-148A (148B,149A and 149B) to the "BKGD" position. Record the voltmeter reading of IB21-VBI-592 on Data Sheet 1, Appendix 12.1.

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i 8.4.2 Place the Channel Select switch on IB21-VBM-592 to' 3

channel 1 (2, 3 or 4h

8.4.3 Select a point approziantely 3 feet (by surf ace distance) from sensor 1321-VBE-148A (148B,149A and 149B).

NOTE: It may be physically impossible to impact the control rod drive aschanisms (CRDM) 3 feet from the sensors. The CRDM any be impacted at a distance greater than 3 feet from the sensor.

The impact should be made as close to the 3 foot distance as possible. ,

8.4.4 Hold the Impact device as perpendicular to the surf ace as .

possible at the point selected and generate one impact.

Using the storage oscilloscope, record the impact induced transient. Verify the following occur:

a) The status LED on IB21-VBD-148A (148B, 149A and 1495) changes from Creen to Red.

b) IB21-VBC-592 indicates a First Alert on channel 1 (2, 3 and 4).

c) An audible impact is heard on IB21-VBM-592.

8.4.5 Depress the system RESET switch on IB21-VBC-592.

Note: If any events in Step 8.4.4 do not occur, adjust the Alert Setpoint to increase the ,

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channel's sensitivity adjustments shall be made~

l in accordance with Reference 11.4. If an adjustment is necessary, repeat Steps 8.4.3 thru 8.4.5.

8.5 System Alarm and Inhibit Test Note: The TEC 1439-3 LPM is factory adjusted with the Alert Rate set for four impacts within five seconds.

8.5.1 Select a point approximately 3 feet (by surface distance) from sensor IB21-VBF-148A (148B,149A and 149B), using the impact device, generate one impact at the point -

choosen. Verify the following:

a) The status LED on 1B21-VBD-148A (148B,149A and 149B) indicates a constant Red.

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b) The First Alert display on IB21-VBC-592 indicates the correct channel.

c) Five seconds af ter the Impact, an Automatic Raset of the system occurs.

8.5.2 Using the Impact. device, generate at least four impacts within five seconds. Verify the following:

a) IB21-VEA-592 Alarm indicator LED is ON.

b) Control Room Annunciator has Alarmed.

c) IB21-VBR-592 starts in a Forward Record mode.

8.5.3 Place the Auto Start switch of 1521-VBS-592 in the DISABLE position and depress the STOP switch on 1B21-VBR-592.

8.5.4 Return the Auto Start switch of IB21-VBS-592 to the ENABLE position and depress the System Reset switch on 1B21-VBC-592. Verify that a System Reset occurs.

8.5.5 Place the *DPMD INH" switch on 1B21-VBC-592 to the Manual position.

8.5.6 Generate two impacts at a point approximately 3 feet (by surface distance) from sensor 1B21-VBF-148A (148B, 149A and 149B). Verify the following:

a) The status LED on 1B21-VBD-148A (148B, 149A and 149B) indicates a constant Green.

b) The First Alert display on 1B21-VBC-592 does not indicate a channel.

8.5.7 Place the *DPMD INH" switch on 1B21-VBC-592 to the AUTO position.

8.5.8 Depress the System Reset switch on IB21-VBC-592. Verify that a System Reset occurs.

8.6 System Sensitivity, Alarm and Inhibit Test for Channel 2, 3 and 4 -

8.6.1 Repeat Sections 8.4 and 8.5 for channel 2, 3 and 4.

9.0 ACCEPTANCE CRITERIA 9.1 The Internal Simulator and Tape Recorder function properly as demonstrated in Section 8.3.

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9.2 The System Sensitivity has $n properly adjusted for channel 1, 2, 3 and 4 as demonstrated in Steps 8.4.4, and 8.6.1.

9.3 The System Alarm functions properly as demonstrated in Steps 8.5.1 and 8.5.2.

9.4 The Deliberate Plant Manuever Detector Inhibit switch functions properly as demonstrated'in Step 8.5.6. ,

10.0 FINAL CONDITIONS 10.1 Submit all test results in accordance with the station surveillance program. .

10.2 Remove all test equipment from the test connections.

10.3 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.

11.0 REFERENCES

11.1 Shoreham FSAR 14.1.8.4 11.2 NRC Regulatory Guide 1.133 11.3 TEC Assembly drawings 111690.92-7.81-15A thru 31A.

11.4 TEC Operations and Maintenance Manual f39963-91 T037.410.01 -

11.5 Technical Specification, Section 3/4.3.7.12 12.0 APPENDICES 12.1 Date Sheet SPF 44.662.01-1 12.2 Equipment Numbers and Channel Designation SP 44.662.01 Rev. 9 I

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• - Appendix 12.1

'%~ Page 1 of 2 DATA SHEET 1 Procedure Step 8.2.2 Input to IB21-VBF-148A ,

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Input to IB21-VBF-148B V.

Input to 1821-VBF-149A V. ,

Input to IB21-VBF-149B V. __ _

8.2.6 Gain Select Setting of IB21-VBF-148A Gain Select Setting of IB21-VBF-148B Gain Select Setting of IB21-VBF-149A Cain Select Setting of IB21-VBF-149B 8.2.7 Background Voltage of IB21-VBD-148A V.

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Background Voltage of IB21-VBD-148B V.

Background Voltage of 1821-VBD-149A V.

Background Voltage of IB21-VBD-149B ,

8.2.8 Threshold Voltage of IB21-VBD-148A V.

Threshold Voltage of 1521-VBD-148B V.

Threshold Voltage of IB21-VBD-149A V.

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Threshold Voltage of IB21-VBD-149B 8.2.9 "As Lef t" Threshold Voltage of IB21-VBD-148A V.

"As Left" Threshold Voltage of IB21-VBD-148B V.

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"As Lef t" Threshold Voltage of IB21-VBD-149A V.

"Aa Lef t" Threshold Voltage of IB21-VBD-149B V.

SPF 44.622 91-1 Rev. 9 SP 44.662.91 Rev. 9 8/18/82 Page 10

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Appendix 12.1 Page 2 of 2 DATA SHEET 2 8.3.3 d) First Alert Channel on IB21-VBC-592 8.4.1 Background Voltage of IB21-VBD-148A V.

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Background Voltage of IB21-VBD-148B Background Voltage of IB21-VBD-149A V. -

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Background Voltage of IB21-VBD-149B

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SP 44.662.91 Rev. 9

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t Appendix 12.2 Page 1 of 1 EQUIPMENT NUMBERS AND CHANNEL DESIGNATION Note: All equipment numbers are prefixed by IB21.

• CHANNEL #

2 3 4 Model # 1 Endevco 2273AMI Sensor VBE-148A VBE-148B VBE-149A VBE-149B .

TEC-500 Charge Converter VBT-148A VBT-148B VBT-149A VBT-149B TEC-932 Differential Transducer Amplifier VBF-148A VBF-148B VBF-149A VBF-149B TEC-1432 Impact Detector VBD-148A VBD-148B VBD-149A VBD-149B TEC-1433C Control Module VBC-502 TEC-133C Annunciator Module VBA-502 TEC-1439 Audio Monitor / Simulator VBM-502 TEC-913 Power Supply Monitor EI-502 TEC-142 Alert Setpoint Monitor VBI-502 -

TEC-146 Tape Rec. Interface VBS-502 Racal Tape Recorder VBR-502 TEC-141 AC Power Distrib. June. Box E/S-252 j

SP 44.662.91 Rev. 9