Text

Rev 5 to Maint Procedure MP 1410.32, Testing of Motor- Operated Valves Using Movats
	ML20198D236
Person / Time
Site:	Davis Besse
Issue date:	05/02/1986
From:	; TOLEDO EDISON CO.
To:	;
Shared Package
ML20198D213	List: ML20198D207; ML20198D236; ML20198D255; ML20198D284; ML20198D318; ML20198D330;
References
	MP-1410.32, NUDOCS 8605230196
	Download: ML20198D236 (32)
	v • d • e

MP 1410.32.05

{. _?

3, 5-ik L "# d llCl[{RSElREA3 Davis-Besse Nuclear Power Station MAINTENANCE PROCEDURE MP 1410.32 TESTING OF MOTOR OPERATED VALVES USING MOVATS REVISION 05 Concurrence:

9 > 96 Ass /sta'nt Plant / Manager / Department Superintendent / Dite

/X 57p/ff Approved by:

Pla [ Manager g

Dste l

l i

i I

l l

t? l 8605230196 860515 l

PDR ADOCK 05000346__

O PDR

a e

i MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVAT

,h.#

LIST OF EFFECTIVE PAGES Wa uN D ' *** " ~

~!'.$fN List each sequential page number from 1 - n, including

43

't attachment. Use continuation pages as necessary g

I I

l i

I I

l Page No.I Rev. No.

I Change No.*l l Page No.I Rev. No. l Change No.*l l

I l

l i

I I

l l

i 1

5 l

l l

18 5

l l

11 l

5 l

l l

19 5

l l

I I

111 5

l l

20 5

l l

1 1

5, I

l 21 5

l l

l 2

5 I

I I

22 5

l l

l 1

1 I

I l

l 3

l 5

I l

23 5

l 1

1 I

l l

l I

1 4

l 5

l l

24 1

5 I

I I

I l

l 5

l l

I 25 l

5 I

I l

l l

l 6

l 5

I I

I 26 l

5 l

l l

1 1

I I

7 l

5 l

l l

27 5

l l

l I

l l

8 l

5 l

1 28 l

5 l

l l

l 9

I 5

l l

1 10 1

5 I

I I

I i

11 1

5 I

I I

1 l

I i

12 1

5 I

I 1

l l

13 1

5 I

I I

I l

l I

I I

I i

14 l

5 I

I i

i l

I l

l I

I i

15 l

5 I

I I

l I

I I

I i

16 5

l l

l 1

17 l

5 l

l l

For restricted changes and temporarily approved changes, note the cancelling event /date as well as the change number -- e.g., C-2(R) until restart or C/TA thru 4/14/86.

g.

ii MP 1410.32.05 i.

N '.L.: % f' M P' P. R '"a TESTING OF MOTOR OPERATED VALVES USING A.-

d o

3 g,,, t e..

. r. $. ) *.19 6

4 TABLE OF CONTENTS cg q fS -

t 1.0 PURPOSE.......................

I

2.0 REFERENCES

1 3.0 DEFINITIONS..

1 4.0 TOOLS AND EQUIPMENT..

2 5.0 PRECAUTIONS AND LIMITATIONS.

2 6.0 PREREQUISITES.

2 7.0 ACCEPTANCE CRITERIA 3

8.0 PROCEDURE....

4 8.4 MOVATS SCC Installation.

4 8.5 TMD Installation.

6 8.6 Switch Monitoring Device Installation.....

6 8.7 Current Monitoring Device Installation 6

8.8 Torque Switch Balancing.

7 8.9 Spring Pack Calibration.

8 8.10 TMD and Control Switches Signature Acquisition 9

8.11 Motor Current Signature Acquisition.

11 8.12 Post Maintenance Testing.

12 9.0 DOCUMENTATION.

12

r-s' iii MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS TABLE OF CONTENTS CONTINUED PAGE ENCLOSURE !.

MOVATS TEST DATA SHEETS.

13 ENCLOSURE 2 GUIDELINES FOR USE OF MOVATS MAINFRAME.

16 ENCLOSURE 3.

VOLTAGE SENSING CIRCUITS.

18 ENCLOSURE 4.

CURRENT SENSING CIRCUIT.

20 ENCLOSURE 5.

GUIDELINES FOR ACQUIRING MOTOR CURRENT SIGNATURES.

22 ENCLOSURE 6.

LOAD CELL SUPPORT PLATE DIAGRAM..

23 ENCLOSURE 7.

GUIDELINES FOR TORQUE SWITCH BALANCING..

24 ENCLOSURE 8.

LOAD CELL CALIBRATION GUIDELINES.

25 ENCLOSURE 9.

GUIDELINES TO DETERMINE PRELOAD.

26 ENCLOSURE 10. GUIDELINES FOR CALCULATING K-FACTOR....

27 ENCLOSURE 11. GUIDELINES FOR ACQUIRING TMD AND CONTROL SWITCHES SIGNATURES.

28 n..

i 1

MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS 1.0 PURPOSE 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.

NOTE 1.1 Not all portions of this procedure will be applicable to all motor operated valves.

2.0 REFERENCES

2.1 AD 1823.00, Jumper and Lifted Wire Procedure.

2.2 MP 1411.04, Maintenance and Repair of Limitorque Valve Operator Types SMB-000 and SMB-00.

2.3 MP 1411.05, Maintenance and Repair of Limitorque Valve Operator Types SMB-0 thru SMB-4.

2.4 MP 1411.07, Maintenance and Repair of Limitorque Valve Operator Type SMC-04.

2.5 Bulletin SMBI-82, Limitorque's Instructica and Maintenance Manual for Type SMB, Motor Operated Valves.

2.6 Bulletin SMCI-00 thru 2-85, Limitorque's Instruction and Mainte-nance Manual for Type SMC-00 thru SMC-2 Motor Operated Valves.

2.7 Bulletin SMCI-04/03-83, Limitorque's Instruction and Maintenance for types SMC-04 and SMC-03, 2.8 MOVATS Instructional Manual.

2.9 E-15A, MOV Data List 2.10 NEP-091, Motor Operated Valve Data Evaluation 0.0 DEFINITIONS 3.1 Displacement of Spring Pack - DSP 3.2 Spring Cartridge Cap - SCC 3.3 Signoff (S0) - Indication by procedure user (initials and date on Signoff Sheet) that step was performed.

3.4 Stem Thrust Calibration Device (Load Cell) - STCD Procedure Text Page 1 of 12

1V 2

MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS 3.5 Thrust Measuring Devise - TMD 3.6 Torque Switch Trip - TST 4.0 TOOLS AND EQUIPMENT 4.1 Equipment 4.1.1 The test requires specific elements of the MOVATS Series 2000 or 2100 System.

4.1.2 Clamp-on ammet r.

5.0 PRECAUTIONS AND LIMITATIONS 5.1 Precautions 5.1.1 Stop the procedure if any unanticipated or unexpected event occurs which could present a possible hazard to personnel or equipment, and inform the Job Foreman and/or the Shift Supervisor.

5.1.2 Document deficiencies noted during the performance of the procedure in the Comments section of the MWO.

5.1.3 Position an operator at the MCC as necessary to operate the breaker for personnel safety / equipment protection.

5.2 Limitations 5.2.1 Any work not covered by this procedure shall be performed on a separate MWO.

5.2.2 This procedure can be performed on many different types of valves; some portions of this procedure are not applicable for some types of valves.

6.0 PREREQUISITES (S0) 6.1 Section 5.0, Precautions and Limitations, has been read and understood by all personnel performing this procedure.

6.2 Record Measuring and Test Equipment identification numbers and calibration due dates on Enclosure 1, MOVATS Test Data Sheets,Section I.

6.3 The Shift Supervisor has given his approval to cycle the valve.

6.4 Obtain REP, as applicable, and follow the Health Physics Re-quirements to minimize the spread of contamination and to maintain exposures ALARA.

Procedure Text Page 2 of 12

01 i

3 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS 6.5 Obtain tagging per AD 1823.00, as required.

6.6 Establish communications as necessary.

6.7 Closing thrust values shall be given on MWO (if applicable).

6.8 Only individuals that have completed the MOVATS Qualification Program or individuals under the direct supervision of qualified personnel may operate the MOVATS 2000 or 2100 Mainframe.

(S0) 6.9 Verify that procedure is same issued revision as the controlled copy.

6.10 Enclosure 2, Guidelines for Using MOVATS Mainframe may be referenced for additional information to operate the MOVATS mainframe.

6.11 Enter the symbol "N/A" in the applicable blanks as necessary.

THis is also appropriate when only protions of this procedure are being conducted as may occur during operability testing, etc.

7.0 ACCEPT /.NCE CRITERIA 7.1 The Torque Switch is set properly per applicable documents.

7.2 The Bypass Switch is set per Step 8.10.7.

7.3 The Post Maintenance Testing of Step 8.12 has been completed.

7.4 The Electrical Maintenance Staff has reviewed the test data and determined the operator is adjusted and operating properly.

l l

Procedure Text l

Page 3 of 12 l

i

_)

4 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS 8.0 PROCEDURE 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 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.

8.2.1 Record on the MWO, the number of handwheel turns required to fully cycle the valve in one direction.

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, declutch lever and the spring cartridge cap cover, 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 Reinstall necessary hardware to hold spring pack in place, if required.

8.3.5 Proceed to Step 8.5.

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.

Procedure Text Page 4 of 12

5 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS NOTE 8.4.3 Un those units equipped with handwheel gear reducers, it will be necessary 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.

I l

l CAUTION 8.4.6 l

l l

l Declutch lever shaft shall be held in position l

l and not allowed to be pulled out when removing l

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 I

I I

I NOTE 8.4.6 Later models have the declutch lever shaft held in place by a snap ring located behind the declutch link which prevents the loud snap mentioned above.

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.

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 Ensure that the gasket is reinstalled on the MOVATS SCC.

8.4.12 Slide the MOVATS SCC on to the housing.

8.4.13 Replace all SCC bolts (SMB-0 through 2 require washers behind bolts).

Procedure Text Page 5 of 12

6 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS 8.5 TMD Installation 3.5.1 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 i

TMD is in the approximate center of its travel, if required.

8.5.4 Mount the TMD using one of the existing bolt holes in the SCC.

8.6 Switch Monitoring 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.

NOTE 8.6.2

\\

The voltage sensing circuit switch monitoring will be used unless otherwise directed by the electrical mainten-ance engineering staff.

1 8.6.2 Voltage Sensing Circuit - Connect alligator clips to the appropriate terminals. Use the guidelines on page 1, Enclosure 3, Voltage Sensing Circuit, when using l

the MOVATS 2000 system. Use the guidelines on page 2,

!, 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 Enclosure 4, Current Sensing Circuit.

List wires lifted on.

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 The current signature may be taken either at the valve or at the MCC, using either a Fluke or a Simpson Ammeter.

Procedure Text Page 6 of 12

7 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS NOTE: 8.7, 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 Balancing 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.

8.8.1 Position the valve either electrically or manually so that the bypass switch for the open torque switch is open.

NOTE: 8.8.1 Ensure that the open torque switch is neither bypassed or removed from circuit.

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 valveastem does not raise above the operator when the valve is completely open, insert the appro-priate extension rod.

8.8.4 Continue to install the STCD as shown in Enclosure 6, 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 THD and switch output.

8.8.7 Record DSP at TST on Enclosure 1,Section II.

NOTE: 8.8.7, Guidelines for Torque Switch Balancing may be referenced for additional information.

8.8.8 Electrically close the valve monitoring TMD and switch output.

Procedure' Text Page 7 of 12

8 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS 8.8.9 Record the DSP at TST on Enclosure 1,Section II.

NOTE: 8.8.9 I may be referenced for additional information.

8.8.10 If the difference of the millivolts movement in the open direction and the millivolts movement in the closed direction is less than 100 NV, then the torque switch will be considered balanced.

If so, proceed to Step 8.9.

If not proceed to the next step.

NOTE: 8.8.10 If the torque switch does not have balancing provisions, proceed to Step 8.9.

8.8.11 To balance the torque switch, change the position of the adjusting arm on the torque switch.

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.

8.8.12 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.

8.9 Sprina Pack Calibration NOTE: 8.9 l, 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 Enclosure I,Section VI.

8.9.4 Record preload on Enclosure 1,Section III.

Procedure Text Page 8 of 12

9 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS NOTE: 8.9.4, Guidelines to Determine Preload may be referenced for additional informatian.

8.9.5 Determine the spring pack constant (K-Factor) and record on Enclosure 1,Section III.

NOTE: 8.9.5 0, Guidelines for Calculating K-Factor may be referenced for additional information.

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.

l l

l CAUTION: 8.9.7 l

1 I

l DO NOT disconnect load cell cable with mainframe l

l energized.

l l

l 8.9.7 Remove the load cell and stem extension rod if used.

8.10 TMD and Control Switches Sianature Acquisition I

i l

CAUTION: 8.10.1 l

l l

i Ensure spring pack is in relaxed state prior l

t l

to setting torque switch.

l l

NOTE: 8.10 l

Actual thrust = TMD displacement x K-Factor + preload.

NOTE: 8.10 1, Guidelines for Acquiring TMD and Control Switches Signatures may be referenced for addition infor-mation.

(S0) 8.10.1 Set the torque switch switch per EISA as referenced on the NWO unless target thrust values are directed by engineering. Refer to MP 1411.04, MP 1411.05 or MP 1411.07 for instructions to set torque switch.

Procedure Text Page 9 of 12

4 10 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MC'.\\TS NOTE: 8.10.1 If target thrust values result in a torque switch setting different from E15, an REA will be submitted for engineer-ing resolution.

NOTE: 8.10.2 Maximum thrust should not exceed these values:

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 Steps 8.10.3 through 8.10.7 maybe repeated if control

, switches are not setup properly. Only the "As Left" data is to 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.

i 8.10.4 Determine open to closed cycle time and record on

!,Section V, Per Enclosure 11.

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, Per Enclosure 11.

NOTE: 8.10.7 The bypass on gate and globe type operators shall be set so it will open at 20% sinus 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. Record Disc Cycle time on.

(S0) 8.10.7 Based on the analysis of the control switch setup, determine if all switches are set up properly. Reset and retest as required.

Procedure Text Page 10 of 12 l

11 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS NOTE: 8.10 When storing signatures for a detailed final analysis, store only corresponding closing and opening signatures.

8.11 Motor Current Signature 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 MWO history sheet.

NOTE: 8.11 may be referenced for additional information.

8.11.1 With the valve initially in the open position, elec-trically operate the valve to the close position while monitoring switches and motor current. Store electri-cally and record the storage data on Section VI on Enclosure I.

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 on Enclosure I.

8.11.3 Remove the TMD, switch monitoring device and the ammeter as applicable.

8.11.4 Remove the NOVATS SCC and replace with the SCC or the SCC cover of the test unit as applicable.

I i

l CAUTION: 8.11.5 l

l l

l Declutch lever shaft must 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 I

l l

shaft held in place by a snap ring located l

l l

behind the declutch link.

l I

I 8.11.5 Ensure that the SCC gasket is reinstalled.

8.11.6 Remount the handwheel gear reducer and handwheel, as applicable.

Procedure Text Page 11 of 12

i 12 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS 8.12 Post Maintenance Testina 3.12.1 Position personnel at the valve, MCC, and in the Control Room. Establish communications so that proper operation can be observed.

8.12.2 Electrically operate the valve to the close position.

1 (S0) 8.12.3 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.

8.12.4 Electrically operate the valv-two complete cycles, once locally and once from the Control Room, if applicable, to verify proper valve and operator operation.

(S0) 8.12.5 The valve should be placed back in its As Found position or as directed by the Shift Supervisor.

(S0) 8.12.6 Maintenance Engineering Staff shall evaluate the MOVATS signatures and data for acceptability.

9.0 DOCUMENTATION 9.1 Completed Data Sheets, as applicable, shall be processed as Quality or Commercial Records, as appropriate, with the MWO.

9.2 Forward copies of the NOVATS Test Data Sheet and NOVATS Signa-tures to Facility Engineering for their evaluation.

Procedure Text Page 12 of 12

sr 13 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS MOVATS TEST DATA SHEET Step Action Initials /Date Perfo rmer 6.1 Precautions and Limitations Read

/

6.9 Procedure Rev Verified

/

8.10.1 (7.1)

Torque Switch Set

/

8.12.3 (7.3)

Valve Seating Verified

/

8.10.7 (7.2)

Switches Set

/

8.12.5 Valve Positioned OPEN/CLOSE

/

(circle one)

8.12.6 (7.4)

Data Evaluated

/

Comments:

i l

l t

I l

l

/

Signature /Date Test Leader All Acceptance Criteria met

/

Maintenance Engineering Staff / Date

Denotes step which satisfies acceptance criteria.

Page 1 of 3 l

i 14 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS MOVATS TEST DATA SHIET (Continued)

?!WO #:

SECTIC4 I Record Operator Informatton Re. rd Valve Information Type:

I.D.. :

Size:

Type:

Serial No:

Size:

Order Number:

Valve Body Orientation:

Stee Orientation:

Record Motor Information Rated Aspe:

Control Circuit Volta:

Rated Volts:

Actual:

AC or DC Control Speed:

Circutt:

AC/

DC Horsepower:

Open Control:

LIM / ICR AC or DC:

AC/

DC Closed Control:

LIM / TOR Orientation:

Top /Stde/ Bot (for Breaker #:

Motor Serial f:

horia. Switch Sensing stem) Circuit:

V0L /

CL1t Record System Information Record As Tound Switch Information Systee:

Open Torque Switch Setting:

Flow:

Closed Torque Switch Setting:

Temp:

Limiter Plate Size:

Press:

TS Balancing Capability:

Record Test Equipment Numbers and Calibration Due Dates Mainfrase

/

Initial Position Valve:

0 / C Load Cell:

/

Final Position of Valve:

0 /

C TMD:

/.

Safety Related:

Yes No Amp Probe:

/

TORQUE SWITCH BAIANCING 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 SPRING PACE CALIBRATION SECTION III:

l Spring Pack Constant f/V Preload:

1 SECTION IV:

Record Tarset Thrust Value Record Actual Thrust Values Optional OPEN Volts DSP =

at TSS CLOSED CLOSED Volts DSP =

4 at TSS Target Value

-10%+20%

i SECTION V:

BYPASS SETTING TORQL1 SWITCH AS LETT l

CYCLE TIME OPEN CLOSED OPEN TO CLOSE:

As Found Min Max As Left CLOSE TO OPEN:

DESC CTCLE TIME SECTION VI:

IT"E STROKI ACQUISITION CTCI.E ID BUBBM/ BLOCK BUBl u/BIDCI RANE/RATI/RANE TL - CAL

/ 5

/ 5 10v/

eS/

6 v TS - OC

/ t

/ 2 10v/

as/

v TS - CO

/ 3

/ 4 10v/

eS/

v l

CS - OC

/ 1

/ 2 v/

eS/

v CS - CO

/ 3

/ 6 v/

eS/

v Page 2 of 3

15 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS MOVATS TEST DATA SHEET (Continued)

JLHPERS INSTALLED l

I l

ERED I

I RESTORED l

I FROM TO VERIFIED BY VERIFIED BY I

I I

BY I

I BY l

i I

l I

l l

I I

l l

1 1

I I

I l

l l

l 1

1 I

I i

l l

I l

l I

I I

i l

l I

I i

l l

I I

LIFTED WIRES l

WIRE I LIFTED I LIFTED 1 VERIFIED l RESTORED 1 VERIFIED l i NUMBER FROM i

BY BY BY BY I

I I

I l

i I

I I

I i

l i

I I

l l

l I

l l

SLIDE-LINKS REPOSITIONED l TERMINAL I

POSITION OF i REPOSITIONED l

VERIFIED I

RESTORED 1 VERIFIED l l

NUMBER I SLIDE-LINK I

BY I

BY l

BY I

I I

I l

l l

l 1

l l

1 I

I I

l I

I I

i l

I l

i l

i I

I I

l i

I l

l l

Page 3 of 3

16 HP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS 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.

Ti.ae 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 expans on switch: OFF b.

Horizontal expansion switch: OFF c.

Auto center switch: ON d.

Display switch: ROLL I

l l

CAUTION 7 l

l The MOVATS 2000 or 2100 Mainframe must be de-l l

energized prior to connecting and disconnecting l

l load cell cable.

l I

I I

I 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.

Page 1 of 2

17 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS GUIDELINES FOR USE OF MOVATS MAINFRAME (Continued)

+***************************

WARNING 9 Never touca pin contacts of memory bubble.

l l

l CAUTION 9 l

l l

l Ensure MOVATS 2000 or 2100 Mainframe is energized l l

before inserting bubble memory module.

l l

l I

1 9.

Plug the memory module into the back of the test unit (af ter 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.

11.

Press the " Auto Center" switch to the " Select" position to choose the 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, e

14.

Press the "Index" button to change " Blocks" or insert another bubble and "Index" to the appropriate block.

l l

Enclosure ~2 Page 2 of 2 l

~_

18 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS VOLTAGE SENSING CIRCUIT NOTE The switch monitoring device taay be connected at the valve operator, as shown, or at another location that is electrically equivalent, when using the MOVATS 2000 system.

RED OPEN LIMIT SWITCH OPEN BYPASS SWITCH l:l

ol r

OPEN TORQUE SWITCH L

h J

BLUE CLOSED BYPASS SWITCH CLOSED LIMIT SWITCH l*l l0:

Torque Limit Closed Closed CLOSED TORQUE SWITCH L

Y GREEN g

f b

I h

d i i

i

/

CLOSED ORANGE

/

i N

/

'O OPEN

/

\\

POSITIVE l

Connect white to ground on AC and to the negative side on DC Page 1 of 2

L.

,,'/

i r.

If -

MP 1410.32.05 TESTING OF MOTOR 0PERATED NLVESUSINGMOVATS VOLT 5GESENSINGCIRCUIT NOTE

.The switch monitoring device may be connected at the valve operator, as shown, or at' another location that is electrically equivalent, when usfng the MOVATS 2100 system.

RED RED / TRACER OPEN LIMIT SWITCH OPEN BYPASS SWITCH

l<

.i a

a g

f i

WHITE WHITE / TRACER

' OPEN TORQUE SWITCH

)

RLUE BLUE /,TRA.CER

[CLOSEDBYPASSSWITCH CLOSED LIMIT SWITCH BLA BLACK / TRACER CLOSED TORQUE SWITCH A

ORA ORANGE /TRICER f i ' lNGE

\\

s I

5 N

CLOSED GREEN GREEN / TRACER D

i

/@\\

OPEN POSITIVE-Connect white to ground on AC and to the negative side on DC Page 2 of 2

I 20 MP 1410.32.05 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 LS-4 MOVATS LS-5 PENTHOUSE POWER TO GREEN AND BLUE (RED & WHITE /BLACE)

L J

OPEN TORQUE SWITCH BLUE OPEN STROKE WHITE CLOSED LIMIT SWITCH CLOSED BYPASS SWITCH LS-8 MOVATS LS-I "l

PE m 0USE POWER TO BLACK AND WHITE (RED & WHITE / BLACK)

L h

J CLOSED TORQUE SWITCH BLACK CLOSED STROKE

- - f

21 MP 1410.32.05 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 ammeter for AC valves or a Fluke AMP meter for DC valves. Output on the mainf rame for the Simpson will be 10 amps / volt. Output of the Fluke will be 10 amps / volt on the 20 Amps scale and 100 amps / scale on the 200 Amps scale. MOVATS scopes equipped with an AC/DC current switch must be properly set at this time. The Fluke AMP probe must be zeroed with thq 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."

c.

Channel B BNC switch to "GND."

d.

Autocenter "0FF."

e.

Reset numerics "0FF."

f.

Find "0V" with cursor.

g.

Move DC current trace to cursor and "0V' level with DC offset adjustment.

h.

Channel B BNC switch to "DC."

i.

Clamp fluke current probe on de-enersized motor lead.

J.

De-magnetize head by turning probe "0FF" then "0N."

k.

Zero output of fluke with thumbwheel.

1.

Autocenter "0N."

m.

Move DC current trace to bottom of screen with DC offset.

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 actor side. The current in both the shunt field and the series field must 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.

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 full volts scale on the scope to the desired value, set per Table B.

Page 1 of 2

3 22 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS GUIDELINES FOR ACQUIRING MOTOR CURRENT SIGNATURES (Continued)

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 Getr. 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 Getr. than 16 amp 200A IV

i.

Page 2 of 2

.a.

23 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS LOAD CELL SUPPORT PLATE DIAGRAM i

1

(~ % LOAD CELL

( g d

2

)

SUPPORT PLATE I

v I

Z NBS CERTIFIED CXTENSION LOM CEL ROD

}

[

l (optional)

=

3

+

j l'

{

1\\

SUPPORT

+

l

{

g RODS I

l I

a v

I I

I

=

ti l

l ra

=

I l

l

+

UPPER THRUST T

BEARING HOUSI I

I l

(,

(.9 1 1I i i Il l

l l

/

La i

i tj X

I

~

VALVE STEM 1

NOTE Each load cell support plate is identified as to what size of operator it is to be used on.

Page 1 of 1

7.-. J 24 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS 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 equai 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, you must 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 Ims time per point.

3.

While monitoring TMD and switches, operate valve in open direction until 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 Section II.

I I

l CAUTION 4 l

l l

l Bypass switch for open torque switch must be open l l

to allow valve to de-energize when stem contacts l

l load cell.

l I

I l

l 4.

While still monitoring TMD and switches operate valve in close direction until valve seats.

e 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.

Page 1 of 1

======e 25 MP 1410.32.05 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 calibration button on front of penr. house and compare numerics on scope to load cell calibration number supplied with each load cell.

3.

Adjustment may be made using load span adjusting screw on back of scope.

4.

Once load cell is calibrated (i 10 mV), to acquire signature set Channel B to 10 volts full scale and Channel A to appropriate setting in Table A.

Set time per point to 1 as.

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 l

l Page 1 of 1

26 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS GUIDELINES TO DETERMINE PRELOAD 1.

Measure the apparent preload of the spring pack by positioaing the verti-cal 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.

3.

Move 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. Record Preload on Enclosure 1,Section III.

NOTE 3 If preload is 0, preload is less than running load.

Page 1 of 1

I.

27 MP 1410.32.05 TESTING OF MOTOR OPERATED VALVES USING MOVATS 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.

4.

Move cursor back in time to an average point before load cell displace-ment. Note millivolt displacement of load cell and subtract the milliviolt displacement of preload. Divide this number by the TMD dis-placement noted in Step 2.

NOTE 4 K-FACTOR (lbs/V) = LOG CEE DISBN-NOM DISMCEMEM TMD DISPLACEMENT 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.

To check the linearity of the K-Factor select 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 200K load cell is used. Each calculated value must be within 10% of actual load cell value to b,e considered linear.

NOTE 6 If K-Factor is not linear, ensure that the maximus TMD displacement against the load cell is equal to the maxi-mum TMD Displacement of the closing stroke.

4

. 0 Page 1 of 1

a 28 MP 1410.32.05 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 numer-ics to 0.

Move 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 THD signature. Reset numer-ics to 0.

Move cursor vertically to switch trip and record time on,Section V.

6.

To set open bypass switch perform the following steps:

Move cursor to point where disc starts to move on TMD signature.

a.

b.

Reset numerics to 0.

c.

Move cursor to switch signature.

d.

Move cursor to last point in time before limit switch trip and note time.

e.

Bypass is to trip at 20% (-0%, +5%) of the noted time.

f.

Move cursor to far right of screen (time equals zero).

g.

Move cursor left until time determined in Step d, plus time from 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.

END 1 Page 1 of 1

.-

ML20198D236

Text

2.0 REFERENCES

2.0 REFERENCES

Navigation menu

Search