ML20212C948
| ML20212C948 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 11/21/1986 |
| From: | Bomer N, Shawn Smith, Storz L TOLEDO EDISON CO. |
| To: | |
| Shared Package | |
| ML20212C847 | List: |
| References | |
| MP-1410.32, NUDOCS 8703040031 | |
| Download: ML20212C948 (44) | |
Text
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IIEIAREhffIlR((Al[0 Davis-Besse Nuclear Power Station MAINTENANCE PROCEDURE MP 1410.32 TESTING OF MOTOR OPERATED VALVES USING MOVATS REVISION 08 Concurrence:
//J3d h Assistant Plant Manager / Department Superintendent
/Date' l
i Approved by:
NOV 211986 Plant 'ME"na Date s
Ih c0R'0ATION ONI.
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i MP 1410.32.08
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TESTING OF MOTOR OPERATED VALVES USING MOVATS LIST OF EFFECTIVE PAGES
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- For restricted changes and temporarily approved changes, note the cancelling (o) event /date as well as the change number -- e.g., C-2(R) until restart or C/TA thru 4/14/86.
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ii MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS TABLE OF CONTENTS SECTION PAGE 1.0 PURPOSE..
1 2.0 RIFERENCES.......................
1 3.0 DEFINITIONS.......................
1 4.0 TOOLS AND EQUIPMENT.
2 5.0 PRECAUTIONS AND LIMITATIONS..
2 6.0 PREREQUISITES..
3 7.0 ACCEPTANCE CRITERIA 3
8.0 PROCEDURE........................
5 8.4 MOVATS SCC Installation.
6 i
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8.5 TMD Installation..................
7 8.6 Switch Monitoring Device Installation....
7 8.7 Current Measuring Device Installation.
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8.8 Torque Switch Balancing.
8 8.9 Spring Pack Calibration.
10 8.10 TMD and Control Switches Signature Acquisition.
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8.11 Motor Current Signature Acquisition.
13 8.12 Motor Load Signature Acquisition 14 8.13 Post Maintenance Testing..
14 9.0 DOCUMENTATION......................
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iii MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS TABLE OF CONTENTS (Continued)
SECTION PAGE ENCLOSURE 1 MOVATS TEST DATA SHEET 16 ENCLOSURE 2 GUIDELINES FOR USE OF MOVATS MAINFRAME.....
20 ENCLOSURE 3 BALANCING LEAF TYPE TORQUE SWITCHES....
22 ENCLOSURE 4 VOLTAGE SENSING CIRCUIT............
23 ENCLOSURE 5 CURRENT SENSING CIRCUIT............
25 ENCLOSURE 6 GUIDELINES FOR ACQUIRING MOTOR CURRENT SIGNATURES.
26 ENCLOSURE 7 TESTING FW 601 AND FW 612.......
28 ENCLOSURE 8 LOAD CELL SUPPORT PLATE DIAGRAM........
32 ENCLOSURE 9 GUIDELINES FOR TORQUE SWITCH BALANCING.
33 ENCLOSURE 10 LOAD CELL CALIBRATION GUIDELINES.
34 ENCLOSURE 11 GUIDELINES TO DETERMINE PRELOAD..
35 ENCLOSURE 12 GUIDELINES FOR CALCULATING K-FACTOR......
36 ENCLOSURE 13 GUIDELINES FOR ACQUIRING TMD AND CONTROL SWITCHES SIGNATURES.
38 ENCLOSURE 14 MOTOR LOAD TESTING 39 0
1 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS 1.0 PURPOSE p) t
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NOTE 1.1 Not all portions of this procedure will be applicable to all motor operated valves.
1.1 The purpose of this procedure is to provide guidelines for the periodic maintenance of Limitorques to ensure reliable operation of motor operated valves utilizing the Motor Operated Valve Analysis and Test System (MOVATS). This procedure shall be performed on each Limitorque in accordance with the preventative maintenance schedule, or as needed for corrective maintenance.
2.0 REFERENCES
2.1 Davis-Besse Procedures 2.1.1 MP 1411.04, Maintenance and Repair of Limitorque Valve Operator Types SMB-000 and SMB-00 2.1.2 MP 1411.05, Maintenance and Repair of Limitorque Valve Operator Types SMB-0 thru SMB-4 2.1.3 MP 1411.07, Maintenance and Repair of Limitorque Valve Operator Type SMC-04.
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2.2 Davis-Besse Drawinas 2.2.1 E-15A, NOV Data List 2.2.2 NEP-091, Motor Operated Valve Data Evaluation.
2.3 Manufacturer's Manual 2.3.1 Bulletin SMBI-82, Limitorque's Instruction and Maintenance Manual for Type SMB, Motor Operated Valves 2.3.2 Bulletin SMCI-00 thru 2-85, Limitorque's Instruction and Maintenance Manual for Type SNC-00 thru SMC-2 Motor Operated Valves 2.3.3 Bulletin SMCI-04/03-83, Limitorque's Instruction and l
Maintenance for types SMC-04 and SMC-03 2.3.4 NOVATS Instructional Manual.
3.0 DEFINITIONS 3.1 Displacement of Sprina Pack -- DSP.
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l Procedure Text Page 1 of 15
1 2
MP 1410.32.08 i
t TESTING OF MOTOR OPERATED VALVES USING MOVATS
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3.2
\\w Sianoff (S0) -- Indication by procedure user (initials and date on Signoff Sheet) that step was performed.
3.3 Sprina Cartridae Cap -- SCC 3'.4 Stem Thrust Calibration Device (Load cell) -- STCD 3.5 Thrust Measurina Devise -- TMD 3.6 Torque Switch Trip -- TST.
i 4.0 TOOLS AND EQUIPMENT 4.1 Measurina and Test Equipment NOTE 4.1.1 NOVATS 2100 System will be required for FW 601 i
and FW 612.
i 4.1.1 The test requires s'pecific elements of the MOVATS Series 2000 or 2100 System 4.1.2 Clamp-on ammeter 4.1.3 Dial indicator (required for FW 601 and FW 612 only) l 4.1.4 Leaf Torque Switch Balancing Rig.
5.0 PRECAUTIONS AND LIMITATIONS i
5.1 precautions 5.1.1 Stop the procedure if any unanticipated or unexpected event occurs which could present a possible hazard to i
i personnel or equipment, and inform the Job Foreman j
and/or the Shift Supervisor.
5.1.2 Document deficiencies noted during the performance of the procedure in the Comments section of the MOVATS l
Test Data Sheet.
I 5.1.3 4
Position an operator at the MCC as necessary to operate the breaker for personnel safety / equipment j
protection.
5.2 Limitations 5.2.1 Any work not covered by this procedure shall be j
performed on a separate NWO.
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,i Procedure Text i
Page 2 of 15 i
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3 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS l
S.2.2 O
This procedure may be performed on many different types of valves; some portions of this procedure are not applicable for some types of valves.
5.2.3 When acquiring motor load signatures the NOVATS 2000 system cannot be used.
6.0 PREREQUISITES 6.1 Administrative 6.1.1 The Shift Supervisor has given his approval to cycle the valve.
6.1.2 Obtain REP, as applicable, and follow the Health Physics Requirements to minimize the spread of contamination and to maintain exposures ALARA.
6.1.3 Establish communications as necessary.
6.1.4 Closing thrust values shall be given on MWO (if applicable).
6.1.5 Only individuals that have completed the NOVATS Qualification Program or inc'ividuals under the direct supervision of qualified personnel may operate the 6.2 Equipment 6.2.1 Record NOVATS Measuring and Test Equipment identification numbers and calibration due dates on, NOVATS Test Data Sheets,Section I.
6.2.2, Guidelines for using MOVATS Mainframe may be referenced for additional information to operate the NOVATS mainframe.
6.2.3 Enter the symbol "N/A" in the applicable blanks of the MOVATS Test Data Sheet as necessary. This is also appropriate when only protions of this procedure are being conducted as may occur during operability testing, etc.
7.0 ACCEPTANCE CRITERIA 7.1 The Torque Switch is set properly per applicable documents.
7.2 The Bypass Switch is set per Step 8.10.8.
Procedure Text Page 3 of 15
4 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS 7.3 The Post Maintenance Testing of Step 8.13 has been completed.
7.4 The Electrical Maintenance Engineering Staff has reviewed the test data and determined the operator is adjusted and operating properly.
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O Procedure Text Page 4 of 15
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5 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS
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8.0 PROCEDURE
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4 NOTE 8.0 The installation of the test equipment on the operator may be performed in parallel or as directed by the test leader. The sequence of testing may be varied at the discretion of the test leader.
NOTE 8.0 When a SMB-000 leaf type torque switch is removed from an actuator or when dir4cted by the test leader, it should be balanced using Enclosure 3, Balancing Leaf Type Torque Switches.
NOTE 8.0 The valve may be cycled electrically prior to testing and where manual operation is called out at the test leaders discretion.
8.1 Complete Section 1 of Enclosure 1.
8.2 Check and set the open limit switch per MP 1411.04 for SMB-000 and SMB-00, MP 1411.05 for SMB-0 through SMB-4, or MP 1411.07 for SMC-04.
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8.2.1 Record on the MWO, the number of handwheel turns required to fully cycle the valve in one direction if manual stroking is required.
8.3 Check to see if the SCC Adapter is required.
If required, proceed to Step 8.4.
8.3.1 Position the valve either electrically or manually such that the spring pack is in a relaxed state.
8.3.2 Remove the handwheel and declutch lever, if required.
8.3.3 Clean both the handwheel shaft and the declutch lever shaft with emery cloth and/or a fine file to remove any burrs and rust before removing the SCC cover, if required.
8.3.4 Remove the SCC cover, if required.
8.3.5 Reinstall necessary hardware to hold spring pack in i
place, if required.
8.3.5 Proceed to Step 8.5.
Procedure Text Page 5 of 15 7,---
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6 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS 8.4 MOVATS SCC Installation - (8.4.1 - 8.4.12 to be performed only if required.)
8.4.1-Position the valve either electrically or manually such that the spring pack is in a relaxed state.
8.4.2 Remove the handwheel and declutch lever if required.
NOTE 8.4.3 On those units equipped with handwheel gear reducers, it will be nedessary to dismount the gear reducer from the SCC prior to removing the SCC.
8.4.3 Clean both the handwheel shaft and the declutch lever shaft with emery cloth and/or a fine file to remove any burrs and rust before removing the SCC Cover, if required.
8.4.4 Remove all but two allen screws in the SCC.
8.4.5 Back out the remaining screws approximately 1/8 inch while holding the declutch shaft in.
NOTE 8.4.6 Later models have the declutch lever shaft held in place by a snap ring located behind the l
declutch link which prevents the loud snap.
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l CAUTION 8.4.6 l
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l Declutch lever shaft shall be held in position l
l and not allowed to be pulled out when removing I
l the end cap. A loud snap will be heard on l
l removal of this end cap which is the torsion l
l spring being released. Do not be alarmed, l
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8.4.6 Loosen end cap.
8.4.7 Remove the two remaining screws.
8.4.8 Remove the test unit's SCC.
8.4.9 Measure the depth of the test unit's SCC shoulder.
Procedure Text Page 6 of 15
7 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING NOVATS O'
8.4.10 Adjust the depth of the MOVATS SCC shoulder so that it is approximately the same as that of the test unit, if required.
8.4.11 Install the SCC gasket on the MOVATS SCC.
8.4.12 Slide the MOVATS SCC on to the housing.
8.4.13 Replace all SCC bolts (SNB-0 through 2 require washers behind bolts).
8.5 TMD Installation 8.5.1 Ensure spring pack is in its relaxed state.
8.5.2 Measure the distance between the outer flange of the SCC and the spring pack locknut, if required.
8.5.3 Install the appropriate TMD extension such that the TMD is in the approximate center of its travel, if required.
NOTE 8.5.4 Wnen mounting the TMD the following size mounting rod is needed.
SMB-000...........
5/16" SMB-00 5/16" SMB-0............
1/4" SMB-1............
1/4" SMB-2............
1/4" SMB-3............
3/8" ShB-4 1/2" SNC-01............
10mm SNC-04............
6mm 8.5.4 Mount the TMD using one of the existing bolt holes in the SCC.
8.6 Switch Monitorina Device Installation 8.6.1 Prior to performing this installation, ensure that all components within the electrical compartment have been de-energized, with the exception of DC power to the plant computer which may be de-energized to the extent necessary to perform the work safely.
Od Procedure Text Page 7 of 15
8 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS NOTE 8.6.2 The voltage sensing circuit switch monitoring will be used unless otherwise directed by the Electrical Maintenance Engineering staff.
8.6.2 Voltage Sensing Circuit - Connect alligator clips to the appropriate terminals. Use the guidelines on page l
1, Enclosure 4 Voltage Sensing Circuit, when using the MOVATS 2000 system. Use the guidelines on page 2, l, when using the MOVATS 2100 System.
8.6.3 Current Sensing Circuit - After review of the control circuit, lift the appropriate terminal leads and install the MOVATS monitoring circuit, per l, Current Sensing Circuit. List wires lifted on Enclosure 1.
8.6.4 Connect dead man switches as necessary to protect the open and close circuits.
8.6.5 connect a clamp-on ammeter to monitor motor current.
8.7 Current Measurina Device Installation NOTE 8.7 O
The current signature may be taken either at the valve or at the MCC, using either a Fluke or a Simpson Ammeter.
NOTE 8.7 l, Guidelines for Acquiring Motor Current Signatures may be referenced for additional information.
8.7.1 Clamp the amp probe on the appropriate motor lead.
8.8 Torque Switch Balancina NOTE 8.8 l
When testing W 601 and W 612 follow the directions on, Testing W 601 and W 612.
NOTE 8.8 Check the installed torque switch to determine if it has balancing provisions.
If so, balance the switch as specified in this section.
If torque switch balancing is not required, Steps 8.8.11 and 8.8.12 will not apply.
O Procedure Text Page 8 of 15
9 MP 1410.32.08 TESTING OF HOTOR OPERATED VALVES USING MOVATS O
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l CAUTION 8.8.1 l
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Ensure that the open torque switch is neither l
I bypassed or removed from circuit.
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l 8.8.1 Position the valve either electrically or manually so that the bypass switch for the open torque switch is open.
8.8.2 Remove the upper bearing housing bolts one at a time and replace with load cell support rods.
8.8.3 If the valve stem does not raise above the operator when the valve is completely open, insert the appro-priate extension rod.
l 8.8.4 Continue to install the STCD as shown in Enclosure 8 Load Cell Support Plate Diagram.
8.8.5 Adjust the torque switch to a setting of 1.0 in both the open and closed direction (or as close to 1.0 as practical) or at an equal setting as determined by the Electrical Maintenance Engineering staff, and record on Enclosure 1,Section II.
8.8.6 Electrically open the valve monitoring TMD and switch output.
NOTE 8.8.7 l, Guidelines for Torque Switch Balancing may be referenced for additional information.
8.8.7 Record DSP at TST on Enclosure 1,Section II.
8.8.8 Electrically close the valve monitoring 1MD and switch output.
NOTE 8.8.9 l may be referenced for additional information.
8.8.9 Record the DSP at TST on Enclosure 1,Section II.
O Procedure Text Page 9 of 15
10 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS 8.8.10
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IF the difference of the millivolts movement in the open direction and the millivolts movement in the
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closed direction is less than 100 mV, then the torque switch will be considered balanced.
IF so, proceed to Step 8.9.
IF NOT proceed to the next step.
IF the torque switch does not have balancing provisions, proceed to Step 8.9.
NOTE 8.8.11 On torque switches with top mounted adjusting screws, turn desired screw out to increase setting. On torque switches with bottom mounted adjusting screw, turn desired screw in to increase setting.
8.8.11 To balance the torque switch, change the position of the adjusting arm on the torque switch.
8.8.12 Repeat steps 8.8.6 through 8.8.11 and record final DSP at TST for both the open and close direction on,Section II.
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8.9 Sprina Pack Calibration NOTE 8.9 l 0, Load Cell Calibration Guidelines, may be referenced for additional information, 8.9.1 Ensure load cell is calibrated.
8.9.2 Set the torque switch to less than or equal to 2.0 in the open direction OR as directed by the Electrical Maintenance Engineering staff.
8.9.3 Run the valve open into the load cell monitoring TMD and load cell output. Store and record the data on l,Section VI.
NOTE 8.9.4 l 1, Guidelines to Determine Preload may be referenced for additional information.
8.9.4 Record preload on Enclosure 1,Section III.
Procedure Text Page 10 of 15
11 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS
N NOTE 8.9.5 2, Guidelines for Calculating K-Factor may be referenced for additional information.
8.9.5 Determine the spring pack constant (K-Factor) and record on Enclosure 1,Section III.
8.9.6 Position valve so the stem or stem extension rod is NOT against the load cell AND the spring pack is in a relaxed state.
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l CAUTION 8.9.7 l
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l DO NOT disconnect load cell cable with mainframe l
l energized.
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8.9.7 Remove the load cell and stem extension rod if used.
8.10 TMD and Control Switches Sianature Acquisition NOTE 8.10 Actual thrust = TMD displacement x K-Factor + preload.
NOTE 8.10 l 3, Guidelines for Acquiring TMD and Control Switches Signatures may be referenced for addition info rma tion.
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t Procedure Text l
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12 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS 7-3
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CAUTION 8.10.1 1
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l Ensure spring pack is in relaxed state prior l
I to setting torque switch.
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I (S0) 8.10.1 Set the torque switch per EI5A OR as referenced on the MWO. Refer to MP 1411.04, MP 1411.05 or MP 1411.07 for instructions to set torque switch.
NOTE 8.10.1 If target thrust values result in a torque switch setting different from E15, an RFA will be submitted for Engineering resolution.
1 NOTE 8.10.2 Maximum thrust should not exceed these values by more than 10%:
SMB-000.
8,000 lbs SMB-00 14,000 lbs SMB-0 24,000 lbs SMB-1 45,000 lbs SMB-2 70,000 lbs SMB-3 140,000 lbs SMB-4 250,000 lbs 8.10.2 Record target value on Enclosure 1,Section IV (if applicable).
NOTE 8.10.3 l
i To aid in signature analysis, the TMD Trace I
should be positioned so the DC Offset Adjustment does not have to be used between obtaining open and close signatures.
NOTE 8.10.3 Steps 8.10.3 through 8.10.7 maybe repeated if control switches are not setup properly. Only l
the "As Left" data shall be stored.
8.10.3 Operate the valve close monitoring TMD and switch output. Store electrically and record the storage data in Section VI on Enclosure 1.
2 Procedure Text Page 12 of 15 i
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13 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS 8.10.4 Determine open to closed cycle time and record on l,Section V.
8.10.5 Operate the valve open monitoring TMD and switches output. Store electrically and record the storage data in Section VI on Enclosure 1.
8.10.6 Determine closed to open cycle time and record on
},Section V.
NOTE 8.10.7 The bypass on gate and globe type operators shall be set so it will open at 20% minus 0% plus 5% of the Disc Cycle time starting from the point that the valve disc starts to move.
If preload overcomes disc movement, set the bypass at 25% to 30% of full stroke.
8.10.7 Record Disc Cycle time on Enclosure 1,Section V.
(S0) 8.10.8 Based on the analysis of the control switch setup, determine if all switches are set up properly. Reset and retest as required.
NOTE 8.11 O
When storing signatures for a detailed final analysis, store only corresponding closing and opening signatures.
8.11 Motor Current Sianature Acquisition NOTE 8.11 If motor current exceeds nameplate value by 10% or more monitor and record current and voltage on all phases on the NWO history sheet.
NOTE 8.11 l may be referenced for additional information.
8.11.1 With the valve initially in the open position, electrically operate the valve to the close position while monitoring switches and motor current. Store electrically and record the storage data on Section VI of Enclosure 1.
8.11.2 Operate the valve in the open direction, again, monitoring motor current and switches output. Store electrically and record the storage data in Section VI of Enclosure 1.
O Procedure Text Page 13 of 15
14 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS O
'8.11.3 Remove the THD, switch monitoring device and the ammeter as applicable.
8.11.4 Remove the MOVATS SCC and replace with the SCC or the SCC cover of the test unit as applicable.
I I
l CAUTION 8.11.5 1
l 1
I i
l l
Declutch lever shaft shall be held in position and l l
not allowed to be pulled out when removing the l
l end cap. Later models have the declutch lever l
l shaft held in place by a snap ring located l
l behind the declutch link.
l I
t l
8.11.5 Ensure that the SCC gasket is reinstalled.
8.11.6 Remount the handwheel gear reducer and handwheel, as applicable.
i 8.12 Motor Load Sianature Acquisition
}
(S0) 8.12.1 Obtain motor load signatures using Enclosure 14, i
Motor Load Testing if directed by the NWO or test leader.
8.13 Post Maintenance Testina 8.13.1 Position personnel at the valve, MCC and in the Control Room.
i Establish communications so that proper operation can be observed.
i 8.13.2 Electrically operate the valve to the close position.
1 (S0) 8.13.3
(
Verify that the valve has seated in the close direc-tion. This may be done by engaging the handwheel and moving it in the close direction. There should be essentially no movement of the stem to further close the valve.
I r
l 8.13.4 Perform functional testing as specified on the NWO.
8.13.5 Electrically operate the valve two complete cycles, once locally and once from the Control Room, if applicable, to verify proper valve and operator operation.
I l
l (S0) 8.13.6 The valve should be placed back in its As Found l
l position or as directed by the Shift Supervisor.
Procedure Text Page 14 of 15 l
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15 MP 1410.32.08
' TESTING OF MOTOR OPERATED VALVES USING MOVATS 1
r (S0) 8.13.7
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Maintenance Engineering Staff shall evaluate the MOVATS signaturds~ and data for acceptability.
y
,q 9.0 DOCUMENTATION 9.1 Completed Data Sheets shall be processed with the MWO.
's 9.2 Forward copies of the MOVATS Test Data Sheet and MOVATS l
Signatures to Design Engineering for their evaluation.
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4 L>
ti Y
Procedure Text Page 15 of 15 l
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16 MP 1410.32.08 TESTING OF MOTOP OPERATED VALVES USING MOVATS i
-s MOVATS TEST DATA SHEET Step Action Initials /Date Performer
- 8.10.1 (7.1)
Torque Switch Set
/
- 8.10.8 (7.2)
Switches Set
/
8.12.1 Motor load signatures have been obtained (as required).
/
- 8.13.3 (7.3)
Valve Seating Verified
/
8.13.6 Valve Positioned OPEN/CLOSE
/
(circle one)
- 8.13.7 (7.4)
Data Evaluated
/
Comments:
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l l
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Signature /Date Test Leader All Acceptance Criteria met
/
Maintenance Engineering Staff / Date
- Denotes step which satisfies acceptance criteria.
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Page 1 of 4 l
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17 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS
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MOVATS TEST DATA SHEET (Continued)
MWO #:
SECTION I Record Operator Information Record Valve Information Type:
I.D. #:
Size:
Type:
Serial No:
Size:
Order Number:
Valve Body Orientation:
Stem Orientation:
Record Motor Information Rated Volts:
Actual:
Control Circuit Volts:
Rated Amps:
Circuit:
AC/
DC Horsepower:
Open Control:
AC/
DC Closed Control:
LIM /__ TOR Orientation:
Top / Side / Bot (for Breaker #:
Motor Serial #:
horiz. Switch Sensing stem) Circuit:
VOL
/
CUR Record System Information Record As Found Switch Information System:
Flow:
Open Torque Switch Setting:
Temp:
Closed Torque Switch Setting:
Limiter Plate Size:
Pressure:
TS Balancing Capability:
Record Test Equipment Numbers and Calibration Due Dates Mainfte3e:
/
Initial Position Valve:
0 /
C Load Cell:
/
Final Position of Valve:
0 /
C TMD:
/_
Safety Related:
Yes No Amp Probe:
/
TORQUE SWITCH BALANCING SECTION II:
As Found DSP at TST OPEN TSS Final DSP at TST OPEN As Found DSP at TST CLOSED
/
Final DSP at TST CLOSED l
SPRING PACK CALIBRATION l
SECTION III:
Spring Pack Constant
- /V Preload:
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k/
s-Page 2 of 4 l
18 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS SECTION IV:
Record Target Thrust Value Record Actual Thrust Values Optional OPEN Volts DSP =
- at TSS CLOSED.
CLOSED Volts DSP =
- at TSS l
Target Min Max SECTION V:
BYPASS SETTING TORQUE SWITCH AS LEFT CYCLE TIME As Found OPEN CLOSED lOPENTO Min CLOSE:
Max CLOSE TO As Left OPEN:
DISC CYCLE TIME:
SECTION VI:
FULL STROKE ACQUISITION CYCLE ID BUBBLE / BLOCK BUBBLE / BLOCK RANGE / RATE / RANGE TL - CAL
/ 5
/ 5 10v/
mS/
4v TS - OC
/
1
/ 2 10v/
mS/
v TS - CO
/ 3
/ 4 10v/
mS/
v CS - OC
/ 1
/ 2 v/
mS/
v CS - CO
/ 3
/ 4 v/
mS/
v SECTION VII:
MOTOR LOAD SIGNATURES BUBBLE / BLOCK BUBBLE / BLOCK ML-0C
/ 1
/ 2 ML-C0
/ 3
/ 4 l
l l
l l
O t
i Page 3 of 4
19 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS f~x MOVATS TEST DATA SHEET (Continued)
JUMPERS INSTALLED l
ERED I
FROM TO g
y VERIFIED BY l RES RED
!VERIFIEDBY l
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l LIFTED WIRES I
WIRE I LIFTED l LIFTED I VERIFIED I RESTORED I VERIFIED l i NUMBER I FROM BY BY BY I
BY l
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SLIDE-LINKS REPOSITIONED I TERMINAL I POSITION OF l REPOSITIONED I VERIFIED I RESTORED I VERIFIED I I
NUMBER SLIDE-LINK l
BY BY BY l
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Page 4 of 4
20 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS I
GUIDELINES FOR USE OF MOVATS MAINFRAME
\\'-') '
1.
The following information will apply to the acquisition of data using the MOVATS 2000 or 2100 Mainframe.
2.
The following controls are laid out from right to left on the mainframe front panel.
3.
Trigger control must be in " Auto" mode, the auto button must be in.
4.
Time per point may be set on 1 ms, but will be adjusted depending on data being acquired.
5.
Channel A & Channel B Controls a.
Channel mode switch:
"On" b.
Volts full scale switch: will be adjusted depending on signature and conditions.
c.
Input BNC switches: (-) "Gnd" (+) "DC" NOTE 6 Ensure that the load cell or switch signature is always in the upper half of the screen and the TMD or current signature is
~)
always in the lower half.
6.
Expansion Controls a.
Vertical expansion switch:
"Off" b.
Horizontal expansion switch:
"Off" c.
Auto center switch:
"On" d.
Display switch:
" Roll" l
I l
CAUTION 7 l
l l
l l
The MOVATS 2000 or 2100 Mainframe shall be l
l de-energized prior to connecting and l
l disconnecting load cell cable.
l l
l l
l 7.
Connected cable input leads to corresponding terminals on back of MOVATS penthouse. Preliminary scope adjustments are complete.
8.
To store a set of signatures depress the red " Store" button before they leave the screen.
s Page 1 of 2
21 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS GUIDELINES FOR USE OF MOVATS MAINFRAME (Continued)
I I
l CAUTION 9
~
l l
l l
Never touch pin contacts of memory bubble.
l I
t i
I I
I I
l CAUTION 9 I
I I
I Ensure MOVATS 2000 or 2100 mainframe is energized l I
before inserting bubble memory module.
l 1
I I
I 9.
Plug the memory module into the back of the test unit (after moving the " Record" switch on the bubble in the direction of the arrow).
10.
Depress the "Index" button until the appropriate block # appears at the top of the screen.
j 11.
Press the " Auto Center" switch to the " Select" position to choose the (s,_h
~/
signature you wish stored on this bubble block. Note the " channel identifier" at the middle bottom of the screen.
12.
Press the " Write" buttons on the Nicolet Unit (under the screen) and on the Input Unit simultaneously when using the MOVATS 2000 system.
The MOVATS 2100 System has only one " Write" button, located under the screen.
13.
Press the Auto Center switch downward to select other channel.
14.
Press the "Index" button to change Blocks or insert another bubble and "Index" to the appropriate block.
l l
O Page 2 of 2
22 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS
(~'
BALANCING LEAF TYPE TORQUE SWITCHES s
1.
Disconnect the torque switch at the limit switch finger board or terminal block.
NOTE 2 The torque switch leads shall remain connected to the torque switch termination screws when performing the balance.
Removing the termination screws on the torque switch will cause the trip point to change.
2.
Install the torque switch in the torque switch test fixture.
3.
Adjust the finger holders so there is a gap between the finger and finger holder indicating a preload on the finger and the finger holders are square to the terminal block.
4.
Set the open and close torque switch settings to 1.0.
5.
Using the finger adjuotic,g tool, bend the open torque switch fingers so both fingers remain closed when the torque switch arm is deflected
.085 inches and the current path is open when the torque switch arm is deflected.090 inches.
6.
Using the finger adjusting tool, bend the close torque switch fingers f}
so both fingers remain closed when the torque switch arm is deflected
\\s,f
.085 inches and the current path is open when the torque switch arm is deflected.090 inches.
7.
Verify the fingers are still preloaded.
8.
Repeat Steps 3 through 7, as necessary.
9.
Remove torque switch from test fixture and install in actuator.
1 Page 1 of 1 l
l
~
23 MP 1410.32.08 TESTIhG OF MOTOR OPERATED VALVES USING MOVATS VOLTAGE SENSING CIRCUIT NOTE The switch monitoring device may be connected at the valve operator, as shown, or at another location that is electrically equivalent, when using the MOVATS 2000 system.
OPEN LIMIT SWITCH OPEN BYPASS SWITCH RED
- 4 :
OPEN TORQUE SWITCH
(
h J
CLOSED BYPASS SWITCH CLOSED LIMIT SWITCH
/
J TORQUE I
LIMIT CLOSED CLOSED CLOSED TORQUE SWITCH N
]
\\
\\
/
a o
CLOSb y
N ORANGE
\\
\\
/
i e
o OPEN
/
x POSITIVE Connect white to ground on AC and to the negative side on DC O
Page 1 of 2
24 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS VOLTAGE SENSING CIRCUIT (Continued)
NOTE The switch monitoring device may be connected at the valve l
actuator, as shown, or at another location that is electrically equivalent, when using the MOVATS 2100 system.
OPEN LIMIT SWITCH ed Re#mGR OPEN BYPASS SWITCH l
i I
I a
o
(
l i
l i
Black Black / TRACER OPEN TORQUE SWITCH Y
}
Orange Orange / TRACER CLOSED BYPASS SWITCH CLOSED LIMIT SWITCH l
o 0
White White / TRACER CLOSED TORQUE SWITCH O
(
)
Green Green / TRACER i
P i
CLOSED
[ Blue f Blue / TRACER
\\
/
I r#
1 6
OPEN O
POSITIVE Page 2 of 2
25 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS CURRENT SENSING CIRCUIT NOTE The switch monitoring device may be connected at the valve operator, as shown, or at another location that is electrically equivalent.
GREEN OPEN LIMIT SWITCH OPEN BYPASS SWITCH Q
MOVATS PENTHOUSE _
POWER TO GREEN AND BLUE -
(RED & WHITE / BLACK)
(
-o OPEN TORQUE SWITCH O
BLUE i V OPEN STROKE WHITE CLOSED LIMIT SWITCH CLOSED BYPASS SWITCH J
MOVATS
,o i
i i
i PENTHOUSE POWER TO BLACK AND WHITE (RED & WHITE / BLACK) 1 CLOSED TORQUE SWITCH BLACK O
Page 1 of I
26 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS GUIDELINES FOR ACQUIRING MOTOR CURRENT SIGNATURES
\\'
1.
Motor current may be acquired with the use of a Simpson Ammeter or Fluke l
ammeter for AC valves or a Fluke AMP probe for DC valves. Output on the mainframe for the Simpson will be 10 amps / volt. Output of the Fluke will be 10 amps / colt on the 20 Amps scale and 100 amps / volt on the 200 Amps scale.
MOVATS scopes equipped with an AC/DC current switch shall be properly set at this time. The Fluke AMP probe shall be zeroed with the scope to achieve proper AMP reading.
2.
To zero the fluke with the scope perform the following steps:
AC/DC switch to the voltage of valve being tested a.
b.
Current to " Channel B" Channel B BNC switch (+) to "Gnd" c.
d.
Autocenter "Off" Reset numerics (RN not displayed) "Off" e.
f.
Find "O V" with cursor Move DC current trace to cursor and "O V" level with DC Offset g.
adjus tment h.
Channel B BNC (+) switch to "DC" i.
Clamp fluke current probe on de-energized motor lead J.
Demagnetize head by turning probe "Off" then "On" k.
Zero output of fluke with thumbwheel 1.
Autocenter "On" Move DC current trace to bottom of screen with DC Offset.
m.
i
,e
(
3.
When working with AC motors attach the clamp-on to the motor lead marked "T2."
4.
When monitoring current on the DC motor, connect Fluke AMP probe between series field / shunt field and ground side of DC system with positive side of AMP probe on motor side. The current in both the shunt field and the l
series field shall be monitored for total current. This current montoring only applies to compound wound DC motor. All others will have to be addressed on an individual basis.
i NOTE 5 It will be necessary to turn the Fluke "Off" and then back "On" between strokes of the valve to ensure the removal of any residual flux in the magnetic core of the Fluke.
5.
Set the channel Volts Full Scale on the scope to the desired value, set per Table B.
Page 1 of 2
27 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS
('N O
GUIDELINES FOR ACQUIRING MOTOR CURRENT SIGNATURES (Cont TABLE B AC VALVE FLA RATED AMPS SIMPSON RANGE FULL VOLTS SCALE Less than 1 amp 20
.4V Less than 4 amp 20 IV Less than 8 amp 200 2V Less than 16 amp 200 4V Grtr. than 16 amp 200 10V DC VALVE FLA RATED AMPS FLUKE RANGE FULL VOLTS SCALE Less than 1 amp 20A
.4V Less than 4 amp 20A IV Less than 8 amp 200A
.4V Less than 16 amp 200A IV Grtr. than 16 amp 200A IV
' O J
O Page 2 of 2
28 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS TESTING W 601 AND W 612 NOTE 1.0 Valves W 601 and W 612 limit close instead of torque close to prevent damaging the valve disc.
NOTE 1.0 l
A Maintenance Engineering Staff member shall be present while testing W 601 and W 612.
I l
l CAUTION 1.0 l
l 1
l Total thrust in excess of 140,000 !bs may cause l
l valve damage.
l l
l l
l 1.0 TESTING W 601 AND W 612 1.1 Spring Pack Calibration m
1.1.1 Remount handwheel.
1.1.2 Position valve 20 handwheel turns from the close seat.
1.1.3 Set the close limit switch (per MP 1411.05) at this point.
I I
l CAUTION 1.1.4 l
l l
l Ensure the open torque switch is neither l
l bypasssed nor removed from circuit.
I I
I I
I 1.1.4 Reposition the valve either electrically or manually so the bypass for the open torque switch is open.
I l
1.1.5 Remove the upper bearing housing bolts one at a time and replace with load cell support rods and install the STCD as l
shown in Enclosure 8.
l 1.1.6 Follow Steps 8.9.1 through 8.9.5 to acquire K-Factor.
l l
Page 1 of 4 l
l l
l
29 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS TESTING W 601 AND W 612 (Continued) 1.2 Setting the Close Limit Switch NOTE 1.2 Limit switch target thrust (including inertial thrust) for W 601 and W 612 is 115,000 lbs.,
15,000 lbs.
1.2.1 Close valve electrically.
1.2.2 Set the open and close torque switch setting to 1.0.
1.2.3 Continue to close valve with handwheel until seat contact is just felt.
1.2.4 Mount a dial indicator on valve so that stem movenent may be measured.
1.2.5 Using the handhweel, raise stem approximately 1/2".
1.2.6 Set the close limit switch (per MP 1411.05) at this point.
1.2.7 Remove dial indicator.
1.2.8 Electrically open valve, stop the valve before the stem hits the load cell.
1.2.9 Electrically close valve.
NOTE 1.2.10 Thrust = TMD displacement x K-Factor + preload.
1.2.10 Determine total thrust.
1.2.11 Manually open valve past the point where the close limit switch closes.
1.2.12 Manually close the valve until the close limit switch opens.
Page 2 of 4
~
i 30 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS A
TESTING FW 601 AND FW 612 (Continued) m-NOTE 1.2.13 If no spring pack deflection is observed during electrical closure, at the discretion of the Maintenance Engineering Staff, the dial indicator may be remounted and the stem starting point lowered in
.05" increments, instead of 1/4 handwheel turns, until initial deflection is observed.
1.2.13 Close the valve 1/4 handwheel turn.
NOTE 1.2.14 The close limit switch shall be set so the closing contacts are just breaking contact with the fingers while going in the close direction.
1.2.14 Reset the close limit switch (per MP 1411.05) at this point.
1.2.15 Electrically open valve, stop the valve before the stem hits the load cell.
1.2.16 Electrically close valve.
()
1.2.17 Determine total thrust.
NOTE 1.2.18 If thrust increase is greater than 20,000 lbs. per run, the Maintenance Engineering Staff may elect to use a lower value than 1/4 handwheel turn each run.
1.2.18 Repeat Steps 1.2.13 through 1.2.17 until limit switch target thrust is achieved.
I i
l
(
Page 3 of 4 l
31 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS TESTING FW~601 AND FW 612 (Continued) 1.2.19 IF the valve stem or disc have been replaced:
Mount a dial indicator to measure stem movement in a.
the closed direction (movement will be approximately 1/2").
b.
Using the handwheel:
Raise the valve stem above rotor 2 trip point.
i Close the valve until rotor 2 just trips.
c.
Zero dial indicator, d.
Using the bandwheel close valve until seat contact is t
just felt.
Record dial indicator reading.
e.
1.3 Torque Switch Balancing 1.3.1 To balance the torque switch perform Steps 8.8.5 through 8.8.12.
1.3.2 Position valve so the stem is NOT against the load cell AND the spring pack is in a relaxed state.
I I
l CAUTION 1.3.3 l
I I
l DO NOT disconnect load cell cable with mainframe l
I energized.
l l
l l
I I
1.3.3 Remove the load cell.
1.4 TMD and Control Switches Signature Acquisition NOTE 1.4.1 The close torque switch setting for FW 601 and FW 612 shall be set to a target thrust of 91,000 lbs., t 9,000 lbs.
1.4.1 Return to Step 8.10 and complete procedure.
O Page 4 of 4
{
32 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS O
LOAD CELL SUPPORT PLATE DIAGRAM a
w rh rrn N
I,0AD CEI.I.
SUPPORT PIATE E!
N W
V, N2
=
b 6
f I
NBS CERTIFIED l
h EXTENSION I
ROD J
/
(optional) i i
v l
s l
l SUPPORT RODS S
~
?
5 l
l k
p-G l
V l
5 UPPER THRUST I
4 BEARING HOUSING l
h O(Q ffil I
Ib l
i i
i_.J r
VAI.VE STEM l
l NOTE Each load cell support plate is identified as to what size of operator it is to be used on.
SUPPORT ROD SIZES SMB-000.
5/16" SMB-00
. 3/8" SMB-0.
1/2" l
SMB-1.
5/8" i
SMB-2.
5/8" SMB-3.
7/8" SMB-4.
1" g
SMC-01..................
16mm U
Page 1 of 1
33 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS (x
GUIDELINES FOR TORQUE SWITCH BALANCING 1.
Adjust the torque switch to a setting of 1.0 in both the open and closed direction (or as close to 1.0 as practical) or at an equal setting as determined by the Electrical Maintenance Engineering Staff.
To determine if the torque switch is tripping with an equal amount of thrust in both the open and closed direction, set up to monitor spring pack deflection (TMD) and switch trip sensing.
2.
Set MOVATS penthouse Channel A to " Switches," and set Channel B to "TMD."
Direction of switch monitoring is set to correspond to direction valve is stroked.
Set mainframe Channel A to "4 v" Volts Full Scale setting and Channel B to "10 v" Volts Full Scale setting. Sampling rate should be set at "1 ms" Time Per Point.
3.
While monitoring TMD and switches, operate valve in open direction untif torque switch trip. When valve opens and signal is acquired on screen, use cursor to determine last data point when torque switch trips.
Using that point in time, cursor vertically to TMD curve and determine the spring pack displacement in volts. Record the volts displacement on
I I
l CAUTION 4 l
l l
}
l l
Bypass switch for open torque switch shall be opeal l
to allow valve to de-energize when stem contacts l
l load cell.
I I
I I
I 4.
While still monitoring TMD and switches operate valve in close direction until valve seats.
5.
Once torque switch trips, deflection of spring pack at torque switch trip may be determined in same manner as was used in open stroke. Record displacement on Enclosure 1,Section II.
A voltage difference any greater than 100 mV between the open and closed torque switch shall be considered out of balance.
6.
To balance the torque switch, change the position of the adjusting arm on the torque switch.
7.
Repeat Steps 3 through 6 and record final displacements of spring pack at torque switch trip for both the open and close direction on Enclosure 1,Section II.
l Page 1 of 1
4 34 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS
<~
LOAD CELL CALIBRATION GUIDELINES 1.
Adjust MOVATS penthouse Channel A to " Load" and Channel B to "TMD."
2.
With Channel A selected, " Reset" Numerics, push Calibrate button on front of penthouse and compare numerics on scope to load cell calibration nwnber supplied with each load cell.
3.
Adjustment may be made using load span adjusting screw on back of secpe.
4.
Once load cell is calibrated (t 10 mV), to acquire signature set Channel B to "10 v" Volts Full Scale and Channel A to appropriate setting in Table A.
Set Time Fer Point to "I ms."
TABLE A VOLTS FULL LOAD CELL EXPECTED THRUST SCALE SETTING 50K 0 - 25,000#
4 50K 25,000 - 50,000#
10 200K 50,000 - 200,000#
4 O
I
! 0 Page 1 of 1 l
=.
35 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS GUIDELINES TO DETERMINE PRELOAD 1.
Measure the apparent preload of the spring pack by positioning the vertical cursor on the last data point of the TMD signature before spring pack displacement.
2.
Move the cursor to the corresponding point in time on the load cell signature. Reset Numerics to "0."
4 3.
Hove cursor back in time to an average point before a load was applied.
Multiply the millivolt displacement by 10,000 if 50K load cell is used or 100,000 if 200K load cell is used.
Section III.
Record Preload on Enclosure 1, NOTE 3 If preload is 0, preload is less than running load.
O l
l l
t O 1 Page 1 of 1
36 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS
[D
\\m /
GUIDELINES FOR CALCULATING K-FACTOR 1.
Position the cursor on an average data point of the TMD signature before spring pack displacement. Reset numerics to "0."
2.
Move cursor to a point equal to approximately a quarter of spring pack displacement. Note value.
3.
Move cursor to the corresponding point in time on the load cell signature.
Reset numerics to "0."
NOTE 4 K-FACTOR (lbs/V) = LOAD CELL DISPLACEMENT-PRELOAD DISPLACEMENT TMD DISPLACEMENT 4.
Move cursor back in time to an average point before load cell displacement. Note millivolt displacement of load cell and subtract the millivolt displacement of preload. Divide this number by the TMD displacement noted in Step 2.
5.
Repeat Steps 1 through 4 at approximately one-half and approximately three quarters of total spring pack displacement. Average the three values and multiply by 10,000 if the 50K load cell is used, or 100,000 if the 200K load cell is used.
()
6.
Check the linearity of the K-factor by selecting a random TMD displacement, multiply it by the K-factor then add the preload, note this calculated value.
Move the cursor to the corresponding point in time on the load cell, Reset numerics to "0" and measure back to 0 load. Multiply millivolt displacement by 10,000 if 50K load cell is used or 100,000 if i
200K load cell is used. Each calculated value shall be within 10% of actual load cell value to be considered linear.
NOTE 6 If K-factor is not linear, ensure that the maximum TMD displacement against the load cell is equal to the maximum TMD displacement of the closing stroke.
ALTERNATE METHOD FOR CALCULATING K-FACTOR l
1.
Select X/Y on the display switch.
2.
Move cursor to a point on the signature where it starts to move diagonally up the screen. Reset numerics to "0."
NOTE 3 i
The "A" value at the lower left side of the screen is the load cell millivolt displacement.
The "B" value at the lower right side of the screen is the TMD millivolt displacement. 2 Page 1 of 2
37 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS GUIDELINES FOR CALCULATING K-FACTOR (Continued) 3.
Nove cursor to a point equal to approximately a quarter of spring pack displacement. Note the load cell and TMD millivolt displacement.
NOTE 4 K-FACTOR (lbs/V) = LOAD CELL DISPLACEMENT TMD DISPLACEMENT 4.
Divide the load cell millivolt displacement by the TMD millivolt displacement.
~
5.
Repeat Steps 3 and 4 at approximately one-half and approximately three quarters of total spring displacement. Average the three values and multiply by 10,000 if the 50K load cell is used, or 100,000 if the 200K load cell is used.
6.
Check the linearity of the K-factor by switching the display switch to ROLL and select a random TMD displacement. Multiply the displacement by the K-factor then add the preload, note this calculated value.
Nove the cursor to the corresponding point in time on the load cell.
Reset numerics to "0" and measure back to zero load. Multiply millivolt displacement by 10,000 if 50K load cell is used or 100,000 if 200K load cell is used. Each calculated value shall be within 10% of actual load cell value to be considered linear.
NOTE 6 If K-factor is not linear, ensure that the maximus TMD displacement against the load cell is equal to the maximum TMD displacement of the closing stroke.
4 t
I O 2 Page 2 of 2
o e
38 MP 1410.32.08 TESTING OF MOTOR OPERATED VALVES USING MOVATS GUIDELINES FOR ACQUIRING TMD AND CONTROL SWITCHES SIGNATURES 1.
When obtaining TMD and control switches signatures ensure the entire signatures are obtained.
2.
Operate the valve closed monitoring TMD with Channel B, and switch output with Channel A.
Store electrically and record the storage data on,Section VI.
3.
Determine the open to closed cycle time by moving cursor to the last point in time before spring pack relaxation on the TMD signature. Reset numerics to 0.
Nove cursor vertically to the switch signature. Move cursor to last point in time before torque switch trip and record time on,Section V.
4.
Operate the valve open monitoring TMD with Channel B, and switch output with Channel A.
Store electrically and record the storage data on,Section VI.
5.
Determine the closed to open cycle time by moving cursor to the last point in time before spring pack relaxation on the TMD signature. Reset numerics to "O."
Move cursor vertically to switch trip and record time on
6.
To set open bypass switch perform the following steps:
l Move cursor to point where disc starts to move on TMD signature.
a.
b.
Reset numerics to "O."
Move cursor to switch signature.
c.
4 d.
Move cursor to last point in time before limit switch trip and note time.
Bypass is to trip at 20% (-0%, +5%) of the noted time.
e.
l f.
Move cursor to far right of screen (time equals zero).
Move cursor left until time determined in Step d, plus time from g.
l beginning of cycle to disc movement, appears on the screen.
h.
Operate valve closed.
i.
Operate valve open until TMD signature reaches the cursor.
J.
Stop valve.
k.
Set bypass switch.
1.
Check bypass to ensure switch is made for the first 20% (-0%, +5%) of disc travel, Repeat steps a through 1 as necessary.
- m. 3 Page 1 of 1
O 39 MP 1410.32.08 6-TESTING OF MOTOR OPERATED VALVES USING MOVATS MOTOR LOAD TESTING
, io Ml I
T1
{ 'o M2 L,+f-T
..o M3 7
MOTOR L_j is_
J T3
- W White Red Figure 1.
, Blue Fluke Connection NOTE 1 The motor load transducer may be connected either at the actuator or the MCC.
NOTE 1 i
When connecting the switch monitoring circuit at the MCC the open circuit switches and close circuit switches cannot be monitored individually. Monitor the open circuit with the red leads and the l
close circuit with the orange leads. Enclosure 4 may be referenced.
l l
l CAUTION 1 1
1 l
I l
Do not connect / disconnect alligator clips from l
l l
the motor load transducer while the MOVATS l
l test equipment is energized.
l l
l l
l 1.
Connect the alligator clips from the motor loao transducer to the power i
leads as shown in Figure 1.
The red lead shall be connected on the non-reversing phase.
O V 4 Page 1 of 2
e
- e 40 MP 1410.32.08 o
TESTING OF MOTOR OPERATED VALVES USING MOVATS MOTOR LOAD TESTING (Continued)
P NOTE 2 The Fluke current probe is required for motor load testing and should be used in accordance with guidelines in Enclosure 6.
NOTE 2 When the motor load transducer is connected at the MCC ensure the Fluke current probe is not connected in the vicinity of the control power transformer.
2.
Connected the Fluke current probe to the same lead that the red lead is connected to, with it's positive toward the supply and on the supply side of the red lead.
3.
Connect the sensing cable to the input jack on the motor load transducer.
4.
Connect the current sensing cable from the mainframe to the output jack on the motor load transducer.
4 5.
Switch the load / current switch to the LOAD to monitor motor load.
Current can also be monitored by switching to CURRENT.
6.
Turn channel A selector to SWITCHES and channel B selector to CURRENT on the MOVATS mainframe.
7.
If packing on the valve has been adjusted or replaced, cycle valve a minimum of 3 times before acquiring signatures.
8.
With valve fully open, run valve closed, monitoring switches and motor load, until valve is completely closed. Store electrically and record storage data in Section VII of Enclosure 1.
l 9.
Run valve open, monitoring switches and motor load, until valve is completely open. Store electrically and record storage data in Section VII of Enclosure 1.
(
10.
When signatures have been obtained remove the motor load test equipment and ensure the Fluke amp probe is turned off.
l l
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