ML18152A097

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Responds to IE Bulletin 85-003, Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings. Programmatic & Procedural Enhancements Will Be Implemented as Required,Per Encl Program
ML18152A097
Person / Time
Site: Surry  
Issue date: 09/30/1988
From: Cartwright W
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
86-276B, IEB-85-003, IEB-85-3, NUDOCS 8810130088
Download: ML18152A097 (47)
v • d • e


Text

e VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 September 30, 1988 United States Nuclear Regulatory Commission Attention:

Document Control Desk Washington~ D.C.

20555

.Gentlemen:

VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNITS 1 AND 2 RESPONSE TO IE BULLETIN 85-03 MOV COMMON MODE FAILURES DURING PLANT TRANSIENTS DUE TO IMPROPER SWITCH SETTINGS Serial No.

86-276B NO/HWB:vlh Docket Nos.

50-280 50-281 License Nos. DPR-32 DPR-37 As requesteo by IE Bulletin 85-03, the Virginia Electric and Power Company has implemented measures to ensure that valve operator. switches are selected, set and maintained properly. Motor operated valves (MOVs) in the high pressure safety injection and auxiliary feedwater systems which are required to. be tested for operational readiness in accordance with 10 CFR 50.55a {g) are being integrated into a program similar to the MOVATS 11 81 ue B0ok 11 program.

Programmatic and procedura 1 en*hancements wi 11 be implemented as required. is a summary of the Surry program and is divided into the following five sections:

I.

Results of design basis review.

II.

Policies for establishing correct switch settings.

II I. Switch adjustments and demonstration that v.a 1 ves wi 11 function properly during both normal and abnormal events within the*

design basis.

IV.

Summary as to valve operability prior to adjustments as a result of IEB 85-03.

V.

Data summary.

8810130088 880930 PDR ADOCK 05000280 G

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. If,

-e summarizes the industry calculations used to determine required thrusts, and Attachment 3 provides the extr~polation method used to determine maximum differential pressures.

In a discussion between members of your staff and Mr. George Pannell of my staff, a two-week extension was granted concerning the due date of this response.

The information provided in this response is tr~e and accurate to the best of my knowledge.

If additional informa.tion is required, please let me know.

Very truly yours, Vice Presiden - Nuc.lear W. R. Cartwright Attachments cc:

U. S. Nuclear Regulatory Commission 101 Marietta Street, N.W.

Suite 2900 Atlanta, GA 30323 Mr. W. E. Holland NRC Senior Resident Inspector Surry Power Station

e COMMONWEALTH OF VIRGINIA)

)

COUNTY OF HENRICO

)

e The foregoing document was acknowledged before me, in and for the County_ and Commonwealth aforesaid, today by W.

R. Cartwright who is Vice President -

Nuclear, of Virginia Electric and Power Company.

He is duly authorized to execute and file the foregoing document in behalf of that Company, and the statements in the document are true to the best of his knowledge and belief.

Acknowledged before me this 3.a_ day of Je(Sh~ 1

, 19 li8_.

My Commission expires:

  • ~' bnu.A-<'f LS, 19 "\\ 0 Notary Public ~

(SEAL)

ATTACHMENT 1

e I.

RESULTS OF DESIGN BASIS REVIEW Page 1 of 13 The following is a discussion of the basis for selection of MOVs, the method of determining the maximum differential pressures expected during opening and closing, and the design basis differential pressure for each MOV.

The valve selection was based on the initial line up of the valves during normal operation and their required positioning during an emergency.

Inadvertent valve position was also considered in the selection process.

The maximum differential pressures were determined by reviewing the worst case conditions during the design basis accident.

The resulting line pressures upstream and downstream of the valve were calculated.

    • Consideration was also given to inadvertent valve*

positioning and possible valve repositioning.

Following determination of the differential pressures, each of the valve manufacturers was contacted to verify that the valves would operate, without degradation, under such conditions.

The manufacturers were also requested to provide the minimum thrust required to operate against the maximum differential pressures.

1.0 HIGH PRESSURE SAFETY INJECTION The applicable high pressure safety injection valves are listed in Table 1.

The initial line up of high pressure safety injection consists of the charging pumps taking suction from the refueling water.storage tank and discharging to the reactor coolant system cold legs.

The MOVs selected are those that are required for realignment.-

of the chargi~g pumps from normal charging to high pressure safety injection.

  • e Page 2 of 13 Also, MOVs which, if inadvertently opened or closed, would isolate the safety injection system were selected.

To determine the maximum differential pressure for the charging pump discharge valves, a review was made of the system realignment during an emergency.

It was determined that the maximum differential pressure would result from maximum charging pump discharge pressure on the upstream side and the equivalent of atmospheric *pressure on the downstream side of the valves.

This could occur in the event of a LOCA where the reactor coolant system pressure drops to zero (psig).

Also, a line break downstream of the valves in conjunction with a

safety injection signal could establish this maximum differential pressure.

The maximum charging pump discharge pressure was based on the shut off head of the pumps.

Corrections were made to allow for the difference in elevations between the pumps and the valves.

Discharge pressures based on the pumps taking suction from the refueling water storage tanks (RWSTs) and the low head safety injection pumps were calculated and compared.

The calculations revealed that a

maximum discharge pressure of 2630 psig would occur if suction is taken from the RWSTs.

Suction from the low head safety injection pumps would result in a

discharge pressure of 2746 psig.

Therefore, the more conservative 2746 psig was selected for computing the maximum differential pressure across the charging pump discharge MOVs.

A review of the UFSAR accident analysis, emergency procedures and system configurations _showed the pressure given in Table 1

to be the worst case. differential pr~ssures.

This maximum differential pressure

~ncompasses the events that would require stroking of the applicable valves.

e P.age 3 of 13 The maximum differential pressure for the level control MOVs in the suction lines of the charging pumps is based on the maximum pressure created by the RWST and the volume control tank (VCT).

For the low head to high head safety injection isolation valves, the maximum differential pressure is based on the dis_charge pressure of the low head safety injection pumps.

The maximum differential pressure would occur for these valves when the low head safety injection pump is discharging to the suction of an operating charging pump.

An NRC request for additional information, requested the station to provide justification for the exclusion of the following MOVs from the IEB 85-03 commitment:

l-CH-MOV-1275A, B & C l-CH-MOV-1287A, B & C l-CH-MOV-1373 l-CH-MOV-1381 l-SI-MOV-1869A, B 2-CH-MOV-2275A, B & C 2-CH-MOV~2287A, B & C 2-CH-MOV-2373 2-CH-MOV-2381 2-SI-MOV-2869A, B As a result of this request, a review was made to justify exclusion of the valves listed above.

It was determined that the following valves

would not be included:

l-CH-MOV-1287A, B & C l-CH-MOV-1381 l-SI-MOV-1869A, B Page 4 of 13 2-CH-MOV~2287A, B & C 2-CH-MOV-2381 2-SI-MOV-2869A, B This was based on the fact tha-t the valves are not in the initial high head safety injection flow path.

Also, inadvertent positioning of the valves would not adversely affect the high head safety injection flow path or system.

Additionally, l-CH-MOV-1381 and 2-CH-MOV-2381 would not affect the proper operation of the charging pump recirculation flow path.

However, it was concluded that l-CH-MOV-1275A,B C

(2~CH-MOV-2275A, B &C) and l-CH-MOV-1373 (2-CH-MOV-2373) would be added to the station's bulletin valves under review.

This conclusion was based on the function of the valves and the adverse affect their failure could have on the charging pumps.

2.0 AUXILIARY FEEDWATER The applicable auxiliary feedwater valves are listed in Table

1.

These valves are those that if inadvertently closed would isolate auxiliary feedwater flow to the steam generators.

These valves are normally open and remain open during an emergency.

In the event of a downstream feedwater line break the valves would be closed to isolate the break.

Cross-connect valves (l-FW-MOV-160A,B/2-FW-MOV-260A,B) are provided in the discharge lines of the auxiliary feedwater pumps.

These valves*

  • are nor~ally closed.

In-the event that the headers of one of the Unit's pumps is not functional the cross-connect valves would be opened.

e e

Page 5 of 13 To determine the maximum differential pressures for the auxiliary feedwater valves, the UFSAR design basis events and system configuration were reviewed.

Two scenarios were considered: 1) isolation of a

down stream line break and 2) mis-positioning of the valves.

The selected auxiliary feedwater valves are located in the supply lines to the steam generators.

The supply lines originate from common

headers, into which the auxiliary feedwater pumps (3

per unit) discharge.

In this alignment, the maximum differential pressure for the valves would be pump discharge pressure on the upstream side and atmospheric pressure on the down stream side of the valves.

In the second scenario consideration was given to the mis-positioning of the valves.

In this case the valves would have to be opened if they were inadvertently closed.

It was determined the maximum differential pressure is dependent on the lowest steam generator pressure at.which feedwater flow may have_ to be re-established.

A review of the UFSAR design basis accident analysis was made to determine this pressure.

The maximum differential pressure across the* valves (with the valves closed) would r~sult if the* pumps were running and an accidental depressurization of the main steam system occurred.

The maximum differential pressures were calculated for scenario and determined them to be approximately the same.

each

e e

II.

POLICIES FOR ESTABLISHING CORRECT SWITCH SETTINGS Page 6 of 13 This section defines* the technical basis for establishing torque switch, limit switch, and thermal overload relay settings.

IEB 85-03 MOV torque and limit switch settings were verified using MOVATS signature analysis methods.

The selected and as-left switch settings are provided in Tables 2 and 3.

The following is a sununary of the methods used to select switch settings at Surry Power Station:

TORQUE SWITCH Torque switch settings were chosen to achieve the minimum thrust required to operate the valves against design maximum differential pressure.

The calculated thrust was a conservative sununation* of the valve stem thrust due to differential pressure, the packing load, and the stem unbalance load (due to piston effect of the stem if applicable).

  • For additional conservatism, thrust "bands" were deve~oped for the torque-switch settings.

The thrust bands represent allowable ranges for the. switch settings that are above the calculated thrust values but below the most limiting thrust associated with the design limitations of the valves, motor operators, and/or GDC-17.

The thrust bands provide appropriate tolerances to facilitate the use of the MOVATS system for adjustment of the torque switches.

TORQUE SWITCH BYPASS The torque switch bypasses for valves with 4 train limit switches were set to bypass for 85% of the valve stroke in the safety direction.

e e

Page 7 of 13 An engineering evaluation determined that full flow would-be established should a valve be stopped at 85%

of full stroke (open) during an emergency.

In the closing direction, if the valve were to be stopped 85%

closed, there would ~till be flow present.
However, the consequences of a

valve being stopped 85% closed during an emergency would be less severe than the consequences of a valve being over torqued into the seat.

This is especially true if it were necessary or desired to reopen the valve during an emergency.

Should a valve be stopped at 85% closed during an emergency it would be considered as a single active failure which is within the design basis.

Bypassing the safety direction torque switches for 85% of the valve stroke would adversely affect the adjustment of the other limit switches on the same rotors (position stop'* position indicatiori and 'interlock limit switches).

Therefore, for valves with 4 train limit switches, the bypass switches were relocated to the unused rotors.

This permits the independent adjustment of the bypass switches without affecting the adjustment of the other switches.

For valves with two train limit switches, *the 85% adjustment of the bypa~s switches is noc possible without affecting the adjustment of the other switches.

Consequently, the safety direction torque switches and torque.bypass switches have been removed from the control circuit to make the valves limit controlled.

This is considered a

temporary measure until the 2 train limit switches are replaced with 4 train limit sw1tches.

Replacement of the 2 train limit switches with 4 train limit switchea has been completed for Unit

1.

The Unit 2 changeout is scheduled for the fall 1988 refueling outage.

bulletin valves with Z train limit switches.

Table 4 lists the

e.

e Page 8 of 13 Torque switches in* the non-safety direction must be bypassed for a minimum of 5% of the valve stroke to ensure the operator has maximum torque switch protection.

To facilitate implementation, an adjustment band of 5-10% was chosen over the 5% setting.

This adjustment band is acceptable for valves with 2

or 4 train limit switches and will not adversely affect the adjustment of the other limit switches on the same rotor.

OPEN LIMIT SWITCH The open limit switches were adjusted as required to prevent backseating.

Typically, the open limit switches were set to approximately 95 percent of stroke from the fully closed position.

An adjustment band was provided where possible for the position stop and position indication limit switches.

Table 2 lists the adjustment bands for these switches.

Since the amount of stem travel is affected by the intertia of the MOV assembly, valve design, and motor contactor drop out time, the following process was used to set the open limit switches.

The limit switches were set initially within their adjustment band.

The valves were cycled (handwheeled) open manually to verify that they were fully open (less than five percent from the backseat) but that they were not backseated.

If a valve was found to be backseating, the open limit switch was adjusted and the adjustment was rechecked as described above.

CLOSE LIMIT SWITCH The close limit switches were adjusted to open after the valve disc contacted the seat but before the close torque switches (when utilized) tripped,* resulting in a significant reduction in total thrust.

For the MOVs that torque closed, the close limit switch was removed from the control c_ircuit.

e THERMAL OVERLOAD RELAYS Thermal overload relay heater Page 9 of 13 coils were sized to allow approximately ten to fifteen seconds of operation at locked rotor conditions to ensure the MOVs would not be precluded from operating by inadvertant thermal overload relay trips.

IEB 85-03 overload settings were reviewed to ensure that cable protection was maintained and that uncertainties were resolved in favor of the MOVs performing their safety functions.

The as-left thermal overload settings are provided in Table 5.

e e

Page 10 of 13 III.

SWITCH ADJUSTMENT AND DEMONSTRATION THAT VALVES WILL FUNCTION PROPERLY DURING BOTH NORMAL AND ABNORMAL EVENTS Wil'HIN THE DESIGN BASIS IEB 85-03 torque and limit switch adjustments have been completed and verified using MOVATS Signature Analysis.

Torque switches were. set to trip at a

value greater than the thrust required to overcome differential pressure as described in Section II.

The initial MOVATS signature analysis for the Surry IEB 85-03 MOV program consisted of stem thrust signatures and calibration, torque and limit switch signatures, and motor load signatures for each affected MOV.

To demonstrate that IEB 85-03 MOVs would operate against design basis differential pressure, a selective sample of valves were tested against their applicable maximum differential pressures.

Where it was not possible to obtain the maximum differential thrust, the thrust actually obtained was extrapolated to verify acceptability.

In those instances where differential pressure testing was performed at less than the maximum differential* pressure, the thrusts were utilizing the method described in Attachment 3.

extrapolated The maximum differential pressure testing that was performed proved that the torque switch setting selection process was viable.

A total of seven (7) valves were tested satisfactorily and are listed in Table 6.

As a means of future mqnitoring of the thrust available* to operate the valves against differential pressure, MOVATS base line "Motor Load" signatureg were obtained for each IEB 85-03 MOV.

These signatures,

e Page 11 of 13 which can be related directly to changes in stem thrust, have been forwarded to MOVATS Inc.

for determination of motor load "thresh~ld" values.

The motor load threshold is determined where possible by conservatively calculating the stem thrust required to overcome differential pressure and by measuring the corresponding motor load value.

Motor load values recorded during trouble shooting or post maintenance testing will be compared to the baseline signatures and to the established threshold values (if available) to ensure that valve reliability has not been affected and to determine what additional testing, if any, is required.

Page 12 of 13 IV.

SUMMARY

OF VALVE OPERABILITY.PRIOR TO ADJUSTMENTS AS A RESULT OF IEB 85-03 Item "f" of the IEB 85-03 requires the acquisition of as-found switch*settings pr~or to implementation of the. settings determined in item "b."

However, prior to implementing the bulletin-switch settings, the motor operators were removed by maintenance for a grease changeout.

In addition, the motor operators were overhauled as required.

This was done as part of a larger program involving bulletin and non-bulletin valves to meet Environmental Qualification concerns and prior commitments to the NRC.

Therefore, the as-found switch settings could not be adequately determined and were not obtained.

However, normal periodic tests of the bulletin valves provided verification of the valves' operability pursuant to the*applicable Technical Specification requirements.

Preliminary as-found information was obtained for five MOVs utilizing the MOVAT system, and results indicated the valves were operable.

However, conclusive evidence of the proper switch settings for these MOVs was not obtained.

e V.

DATA

SUMMARY

A.

Tables e

Page 13 of 13

1.

IEB 85-03 valve listing and maximum differential pressure summary

2.

Selected switch settings

3.

As-left switch settings

4.

Bulletin valves with 2-train limit switches

5.

As-left thermal overload settings

6.

Differential pressure test

7.

Summary of valve and motor operator data B.

Figur~s

1.

Typical MOVATS trace close-to-open (static condition)

2.

Typical MOVATS trace close-to-open (design DP)

VALVE l-CH-LCV-1115B,D 2-CH-LCV-2115B,D 1-CH-LCV-1115C,E 2-CH-LCV-2115C,E 1-CH-MOV-1267A,B 2-CH-M9V-2267A,B 1-CH-MOV-1269A,B 2-CH-MOV-2269A,B 1-CH-MOV-1270A,B 2-CH-MOV-2270A,B l-CH-MOV-1275A,B,C 2-CH-MOV-2275A,B,C l-CH-MOV-1286A,B,C 2-CH-MOV-2286A,B,C l-CH-MOV-1289A,B 2-CH-MOV-2289A,B l-CH-MOV-1373 2-CH-MOV-2373 1-FW-MOV-151A to F 2-FW-MOV-251A to F 1-FW-MOV-160A, B 2-FW-MOV-260A, B l-SI-MOV-1867C,D 2-SI-MOV-2867C,D e

e TABLE 1 IEB 85-03 VALVE LISTING AND MAXIMUM DIFFERENTIAL PRESSURE

SUMMARY

SURRY UNITS 1 & 2 FUNCTION/SAFETY OPERATION RWST to high - head SI Pump isolation/Closed to open VCT to charging pump isolation/

Open to Closed Low head SI to high head SI isolatio.n/ As is or change of position due to inadvertent positioning or isolation of line break Charging pump recirculation to seal water heat exchanger charging pump to normal charging isolation Charging pump to normal Charging isolation/Open to Closed Charging pump recirculation to seal water heat exchanger isolation Auxiliary steam generator feedwater pump to.steam generator isolation/

As is or change of position due to inadvertent positioning or isolation of line break Auxiliary feedwater cross connect isolation/Closed to*

open High head SI to cold leg isolation/Closed to Open DESIGN BASIS LlP 27 psi 27 psi 84 psi 84 psi 145 psi 145 psi 145 psi 145 psi 145 psi 2,746 psi 2,746 psi 2,747 psi 2,746 psi 2,746 psi 2,747 psi 2,747 psi 1,184 psi 1,184 psi 1,193 psi 1,193 psi 2,630 psi 2,630 psi Table 1 Page 1 of 1

Table 2 Page 1 of 7 TABLE 2 SELECTED SWITCH SETTINGS TORQUE SW.

MOV MARK/I DIRECTION MINIMUM MAXIMUM BYPASS%

LIMIT STOP %

POSITION IND.%

1-CH-LCV,-11 l 5B Closing 4,799 5,279

  • 5-10 95-100 Opening 4,799 5,279 85-90 95-98 95-98 e

1-CH-LCV-1115C Closing 2,511 2,790 85-90 95-100 Opening 2,511 2,790 5-10 95-98 95-98 l-CH-LCV-1115D

  • Closing 4,799 5,279 5-10 95-100 Opening 4,799 5,279 85-90 95-98 95-98
  • 1-CH-LCV-1115E Closing 1,926

.2, 790 85-90 95-100 Opening 1,926 2,790 5-10 95-98 95-98 l-CH-MOV-1267A Closing 2,554 5,000 85-90 95-100 Opening 2,554 5,000 85-90 95-98 95-98 1-CH-MOV-1267B Closing 3,000 5,000 85-90 95.:.100 Opening 3,000 5,000 85-90 95-98 95-98.

1-CH-MOV-1269A Closing 2,554 5,000 85-90 95-100 Opening 2,554 5,000 85-90 95-98 95-98' 1-CH-MOV-1269B Closing 2,000 5,000 85-90 95-100 Opening 2,000 5,000 85-90 95-98 95-98 l'--CH-MOV-1270A Closing i,554 5,000 85-90 95-100 Opening 2,554 5,000 85-90 95-98 95-98

Table 2 Page 2 of 7 TABLE 2 SELECTED SWITCH SETTINGS TORQUE SW.

MOV MARK/I DIRECTION MINIMUM MAXIMUM BYPASS%

LIMIT STOP %

POSITION IND.%

l-CH-MOV-1270B Closing 3,000 5,000 85-90 95-100 95-100 Opening 3,000 5,000 85-90 95-98

  • 95-98 l-CH-MOV-1275A Closing 11,653 12,818 85-90 95-100 95-100 e

Opening 11,653 12,818 85-90 95-98 95-98 l-CH-MOV-1275B Closing 11,653 12,818 85-90 95-100 Opening 11,653 12,818 85-90 95-98 95-98 l-CH-MOV-1275C Closing 11,653 12,818 85-90 95-100 Opening 11,653 12,818 85-90 95-98 95-98 l-CH-MOV-1286A Closing 11,800 12,980 85-90 95-100 Opening 11,800 12,980 85-90 95-98 95-98 l-CH-MOV-1286B Closing 11,800 12,980 85-90 95-100 95-100 Opening 11,800 12,980 85-:-90 95-98 95-98 l-CH-MOV-1286C Closing 11,800 12,980 85-90 95-100 95-100 Opening 11,800 12,980 85-90 95-98 95-98 e

l-CH-MOV-1289A Closing 9,950 11,058 85-90 95-100 Opening 9,950 11,058 5-10 95-98 95-98 l-CH-MOV-1289B Closing 9,950 11,058 85-90 95-100 Opening 9,950 11,058 5-10 95-98 95-98 l-CH-MOV-1373 Closing 8,416 11,058 85-90 95-98 95-100 Opening 8,416 11,058 85-90 95-98 95-98 l-FW-MOV-151A Closing 12,046 13,200 5-10 95-100 Opening 12,046 13,200 85-90 95-98 95-98

1*

I I

Table 2 Page 3 of 7 TABLE 2 SELECTED SWITCH SETTINGS TORQUE-SW.

MOV MARKI/

DIRECTION MI:tl'IMUM MAXIMUM BYPASS%

LIMIT STOP%

POSITION IND.%

1..:.FW-MOV-151B Closing 12,046 1"3', 200 5-10 95-100 Opening 12,046 13,200 85-90 95-98 95-98 l-FW-MOV-151C Closing 12,046 13,200 5-10 95-100 e Opening 12,046 13,200 85-90 95-98 95-98 l-FW-MOV-151D Closing 12,046 13,200 5-10 95-100 Opening 12,046 13,200 85-90 95-98 95-98 l-FW-MOV-151E Closing 12,046 13,200 5-10 95..:.100 Opening 12,046 13,200 85-90 95-98 95-98 l-FW-MOV-151F Closing 12,046 13,200 5-10 95-100 Opening 12,046 13,200 85-90 95-98 95-98 l.:_FW-MOV-160A Closing 12,046 13,200 85-90 95-100 Opening 12,046 13,200 85-90 95-98 95-98 l-FW-MOV-160B Closing 12,046 13,200 85-90 95-100 Opening 12,046 13,200 85-90 95-98 95-98 e

.1

\\

l-SI-MOV-1867C Closing 9,428 10,900 5-10 95-100 95-100 Opening 9,428 10,900 85-90 95-98 95-98 l-SI-MOV-1867D Closing 9,428 10,900 5-10 95-100 95-100 Opening 9,428 10,900 85-90 95-98 98

Table 2 Page 4 of 7 TABLE 2 SELECTED SWITCH SETTINGS TORQUE SW.

MOV MARKI/

DIRECTION MINIMUM MAXIMUM BYPASS %

LIMIT STOP %

POSITION IND.%

2-CH-:LCV-2 llSB Closing 4,799 5,279 5-10 95-100 Opening 4,799 5,279 85-90 95-98 95-98

  • 2-CH-LCV-21 lSC Closing 2,511 2,790 85-90 95-100 Opeping 2,511 2,790 5-10 95-98 95-98 2-CH-LCV-2115D Closing 4,799 5,279 5-10 95-100 Opening 4,799 5,279 85-90 95-98 95-98 2-CH-LCV-211.SE Closing 1,926 2,790 85-90 95-100 Opening 1,926 2,790 5-10 95-98 95-98 2-CH-MOV-2267A Closing 2,8801 5,0001 95-100 95-100 Opening 2,8801 5,0001 95-98 95-98 2-CH-MOV-2267B Glosing 3,0001 5,0001 95-100 95-100 Opening 3,0001 5,0001 95-98 95-98 2-CH-MOV-2269A Closing 2,8801 5,0001 95-100 95-100 Opening 2,8801 5,0001 95-98 95-98 e

2-CH-MOV-2269B

  • Closing 3,0001 5,0001 95-100 95-100 Opening 3,0001 5,0001 95-98 95-98 2-CH-MOV-2270A Closing 2,8801 5,0001 95-98 95-100-Opening 2,8801 5,0001
  • )"

95-98 95-98 2-CH-MOV-22-?0B Closing 3,0001 5,0001

'95-100 95-100.

Opening 3,0001 5,0001 95-98 95-98

Table 2 Page 5 of 7 TABLE :2 SELECTED SWITCH SETTINGS TORQUE SW.

MOV MARK/I DIRECTION MINIMUM MAXIMUM BYPASS %

LIMIT STOP %

POSITION IND.%

2-CH-MOV-2275A Closing 11,653 12,818 85-90 95-100 95-100 Opening 11,653 12,818 85-90 95-98 95-98 2-CH-MOV-2275B Closing 11, 6531 12,8181 95-100 95-100 Opening 11 ~ 6531 12,8181 95-98 95-98 2-CH-MOV-2275C Closing 11,653 12,818 85-90 95-100 95-100 Opening 11,653 12,818 85-90 95-98 95-98 2-CH-MOV-2286A Closing 8,7001 9,570 95-100 95-100 Opening 8,7001 9,570 95-98 95-98 2-CH-MOV-2286B Closing 11,800 12,980 85-90 95-100 Opening 11,800 12,980.

85-90 95-98 95-98 I

I 2-CH-MOV-2286C Closing 11,800 12,980 85-90 95-100 I

Opening 11,800 12,980 85-90 95-98 95-98 2-CH-MOV-2289A Closing 11,058 12,679 85-90 95-100 95-100 Opening 11,058 12,679 5-10 95-98 95-98 e

  • 1 2-CH-MOV-2289B Closing 11,411 12,679 85-90 95-100 95-100 Opening 11,411 12,679 5-10 95-98 95-98 2-CH-MOV-2373 Closing 8,4161 9,2581 95-100 95-100 Oper;iing 8,4161 9,2581 95-98 95-98 I.

Table 2 Page 6 of 7 TABLE 2 SELECTED SWITCH SETTINGS TORQUE SW.

MOV MARK/I DIRECTION MINIMUM MAXIMUM BYPASS %

LIMIT STOP%

POSITION IND.%

2-FW-MOV-251A Closing 12,046 13,200 5-10

  • fc 100 Opening 12,046 13,200 85--'90 95-98 95-98 2-FW-MOV-251B Closing 12,046 13,200 5-10 100 e

Opening 12,046 13,200 85-90 95-98 95-98 2-FW-MOV-251C Closing 12,046 13,200 5-10 100 Opening 12,046 13,200 85-90 95-98 95-98 2-FW-MOV-251D Closing 12,046 13;200 5-10 100 Opening 12,046 13,200 85-90 95-98 95-98 2-FW-MOV-25 lE Closing 12,046 13,200 5-10 100 Opening 12,046 13,200 85-90 95-98 95-98 2-FW-MOV-251F Closing 12,046 13,200 5-10 100 Opening 12,046 13,200 85-90 95-98 95-98 2-FW-MOV-260A Closing 12,046 13,200 85.,-90 100 Opening 12,046 13,200 85-90 95-98 95-98 e

2-FW-MOV-260B Closing 12,046 13,200 85-90 100 Opening 12,046 13,200 85-90 95-98 95-98 2-SI-MOV-2867C Closing 9,428 10,476 5-10 95-100 Opening 9,428 10,476 85-90 95-98 95-98 2-SI-MOV-2867D

  • Closing 9,428 10,476 5-10 95-100 Opening 9,428 10,476 85-90 95-98 95-98

NOTES:

I I

Table 2 Page 7 of 7 TABLE 2 SELECTED SWITCH SETTINGS

1.

For valves that are limit controlled the thrust is measured at the time of the limit stop limit switch actuation.

This is denoted by the "L" suffix.

2.

Some valves are limit controlled with a torque switch backup.

In these cases both thrust values*

are given.

Denotes that the switch is to be bypassed.

The adjustment bands for the torque switch bypasses takes into account the limitations of.the switch.

This limitation is due to the number of teeth on the limit switch gearing.

e I.

Table 3 Page 1 of 7 TABLE 3 AS-LEFT SWITCH SETTINGS THRUST DEV.AT*

TORQUE SW.

MOV MARK/I DIRECTION CONTROL SW. TRIP BYPASS %

LIMIT STOP%

POSITION IND.%

l-CH-LCV-1115B Closing 4,983 5

100 Opening 4,960 85 98 98 l-CH-LCV-l 115C Closing 2,740 86 100 e

i Opening 2,760 8

98 98 1

l-CH-LCV-l l l.5D Closing 5,280 5

100 Opening 5,240 85 98 98 l-CH-LCV-1 llSE Closing 2,620 85 100 Opening 2,620 6

95 95 l-CH-MOV-126.7 A Closing 3,700 86 100 Opening 3,720 87 95 95

' l-CH-MOV-1267B Closing 3,760 89 97 Opening 4,500 86 95 95 l-CH:_MOV-1269A Closing 3,099 85 100 Opening

' 2,761 85 98 98 e

l-CH-MOV-1269B Closing 3,560 85 100 Opening 4,444 85 98 98 l-CH-MOV-1270A Closing 3,250 87 100 Opening 3,400 8*4 98 98 l-CH-MOV-1270B Closing 3,270 85 100 Opening 3,280 88 98 98

Table 3 Page 2 of 7 TABLE 3 AS-LEFT SWITCH SETTINGS

,1 THRUST DEV.AT*

TORQUE SW.

MOV MARK/I DIRECTION CONTROL SW. TRIP BYPASS %

LIMIT STOP %

POSITION IND.%

1-CH-MOV-1275A Closing 11,760 86 100 Opening 12,160 88 98 98 l-CH-MOV-1275B Closing 11,820 85 100 Opening 12,260 90 98 98 e

1-CH-MOV-1275C Closing 12,450 84 97 Openihg 12,750 88 98 98 l-CH-MOV-1286A Closing 12,800 85 100 Ope!'.1ing 12,800 85 98 98 l-CH-MOV-1286B Closing 12,800 86 100 Opening 12,000 86 98 98 1-CH-MOV-1286C Closing 12,462 as*

95 Opening 12~313 90 100 100 1-CH-MOV-1289A Closing 10,620 88 98 Opening 10,620 9

100 100 1-CH-MOV-1289B Closing 10,100 86 98 Opening 10,540 8

100 100 l-CH-MOV-1373 Closing 8,860 85 99 Opening 10,600 85 100 100 I

Table 3 Page 3 of 7 TABLE 3 AS-LEFT SWITCH SETTINGS THRUST DEV.AT*

TORQUE SW.

MOV MARKI!

DIRECTION CONTROL SW. TRIP BYPASS %

LIMIT STOP %

POSITION IND.%

l-FW-MOV-151A Closing 12,436 7

95 Opening 12,436 85 98 98 l-FW-MOV-151B Closing 12,836 8

95 Opening 13,195 85 98 98 l-FW-MOV-151C Closing 13,200 10 99 Opening 12,446 85 98 98 l-FW:-MOV-151D Closing 12,500.

6 98 Opening 12,189 86 98 98 l-FW-MOV-151E Closing 12,995 8

98 Opening 12,648 85 98 98 l-FW-MOV-151F Closing 12,665 9

100 Opening 13,002 85 98 98 l-FW-MOV-160A Closing 12,422 88 95 Opening 12,360 86 98 98 l-FW-MOV-160B Closing 12,120 87 97

.e*

Opening 12,160 85 98 98 l-SI:....MOV-1867C Closing 10,590 9

97 Opening 10,580 92 98 98 J

l-SI-MOV-1867D Closing 10,421 5

97 Opening 10,300 88 100 100

Table 3 Page 4 of 7 TABLE 3 AS-LEFT SWITCH SETTINGS THRUST DEV.AT*

TORQUE SW.

MOV MARKI!

DIRECTION CONTROL SW. TRIP BYPASS %

LIMIT STOP %

POSITION IND.%

2-CH-LCV-2115B Closing 4,997 5

95 Opening 4,947 86 98 98 2-CH-LCV-2115C Closing 2,678 85 95 Opening 2, 731.

5 95 95 e

2-CH-LCV-2115D Closing 5,170 9

95 Opening 4,856 85 95 95 2-CH-LCV-2115E Closing 2,516 85 95 Opening 1,929 10 95 95 2-CH-MOV-2267A Closing 4,0401 100 100 Opening 3,3061 95 95 2-CH-MOV-2267B Glosing 3, 2071 100 100 Opening 3,1271 95 95 2-CH-MOV-2269A Closing 2,8801 100 100 Opening 2,8801 95 95 2-CH-MOV-2269B Closing 3,2931 100 100 e

Opening 3,2931 95 95

.2-CH-MOV-2270A Closing 3, 6721 100*

100 Opening 3,5681 95 95 2-CH-MOV-2270B Closing 3,5641 100 100 Opening 3, 7261 95 95

Table 3 P8:ge 5 of 7 TABLE 3 AS-LEFT SWITCH SETTINGS THRUST DEV.AT*

TORQUE SW.

MOV MARKIJ DIREC'J;'ION CONTROL SW. TRIP BYPASS %

LIMIT STOP %

POSITION IND.%

.2-CH-MOV-2275A Closing

'12,127 87 96 Opening 12,127 85 98 98 2-CH-MOV-2275B Closing 12,760 100 100 Opening 12,1601 95 95 e

2-CH-MOV-2275C Closing 12,120 87*

98 Opening 12,600 89 98 98 2-CH-MOV-2286A Closing 9,274 95 95 Opening 9,491 95 95 2-CH-MOV-2286B Closing 11,.865 86 95 Opening 11,956 85" 98 98 2-CH-MOV-2286C Closing 12,605 87 95 Opening 11,868 86 98 98 2-CH-MOV-2289A Closing 11,695 85 95

'Opening 12,224 10 98 98 2-CH-MOV-2289B Closing 11,650 85 95 e

Opening 11,850 10 95 95 2-CH-MOV-2373 Closed 9, 1191 95 Opening 9,2431 98 98 2-FW-MOV-251A Closing 13,195 8

95 Opening 12,256 85 98 98 2-FW-}1:0V-25 lB

<::losing 12,965 8

95 Opening 12, 133 85 98 98

Table 3 I

Page 6 of 7 TABLE 3 AS-LEFT SWITCH SETTINGS THRUST DEV.AT*

TORQUE SW.

MOV MARKI!

DIRECTION CONTROL SW. TRIP BYPASS %

LIMIT STOP %

POSITION IND.%

2-FW-MOV-251C Closing 12,559 10 98 Opening 12,941 88 98 98 2-FW-MOV-251D Closing 13,175 9

96 Opening 13,051 85 98 98 2-FW-MOV-251E Closing 12,934 9

96 Opening 12,620 85 98 98 2-FW-MOV-251F Closing 13,177 10 99 Opening 13,004 85 98 98 2-FW-MOV-260A Closing 13,200 85 99 Opening 13,180 88 98 98 2-FW-MOV-260B Closing 13,100 85 95 Opening 12,480 87 98 98 2-SI-MOV-2867C Closing 9,880 10 95 Opening 9,880 85 98 98 2-SI-MOV-2867D Closing 9,684 9

99 e

Opening 9,684 85 98 98 "L" AFTER THE THRUST VALUE INDICATES THAT THE THRUST IS BEING MEASURED AT THE TIME THE LIMIT SWITCH TRIPS.

I

    • SWITCH IS JUMPERED OUT.

NOTES:

Table 3 Page 7 of 7 TABLE 3 AS-LEFT SWITCH SETTINGS

  • 1.

For valves that are limit controlled the thrust is measured at the time of the limit stop limit switch actuatio"n.

This is denoted by the "L" suffix.

2.

Some valves are limit controlled with a torque switch backup.

In these cases both thrust values are given.

    • Denotes the switch was bypassed.

e

TABI.:E 4 -

e Table 4 Page 1 of 1 BULLETIN VALVES WITH 2-TRAIN LIMIT SWITCHES MOV MARK II MOTOR OPERATOR SIZE 2-CH-MOV-2267A, B SMB-000 2-CH-MOV-2269A, B SMB-000 2-CH-MOV-2270A, B SMB-000 2-CH-MOV-2275B SMB-00 2-CH-MOV-2286A SMB-00 2-FW-MOV-260A, B SMB-500

Table 5 Page 1 of 3 TABLE 5 I

AS-LEFT THERMAL OVERLOAD SETTINGS MOTOR FULL LOAD THERMAL OVERLOAD RANGE MOV MARK/I CURRENT (IFLl HEATER COIL ti POSITION (AMPERES)

ULTIMATE TRIP VALUE**

l-CH-LCV-ll 15B 3.5 1035 HIGH 9.12-9.59 309 l-CH-LCV-1115C 0.95 1024 HIGH 2.48-2.62 308 l-CH-LCV-ll 15D 3.5 1035 HIGH 9.12-9.59 309 l-CH-LCV-1115E 0.95 1024 HIGH 2.48-2.62 308 l-CH-MOV-1267A 0.95 1024 HIGH 2.48-2.62 308 e

l-CH-MOV,1267B 0.95 1024 HIGH 2.48..-2.62 308 l-CH-MOV-1269A 0.95 1024 HIGH 2.48-2.62 308 l-CH-MOV-1269B 0.95 1024 HIGH 2.48-2.62 308 l-CH-MOV-1270A 0.95 1024 HrGH 2.48-2.62 308 l-CH-MOV-1270B 0.95 1024

.HIGH 2.48-2.62 308 l-CH-MOV-1275A

  • 2. 7 1033 HIGH 7.34-7.75 320 l-CH-MOV-1275B 2.7 1033 HIGH
7. 34-7. is 320

'1-CH-MOV-1275C 2.7 1033 HIGH 7.34-7.75 320 l-CH-MOV-1286A 2.8 1033 HIGH 7.34-7.75 310 l-CH-MOV""'."1286B 2.8 1033 HIGH 7.34-7.75 310 l-CH-MOV-1286C 2.8 1033 HIGH 7.34-7.75 310 l-CH-MOV-1289A 2.8 1033 HIGH 7.34-7.75 310 l-CH-MOV-1289B 2.8 1033 HIGH 7.34-7.75 310 l-CH-Mov'....1373 2.8 1033 HIGH 7.34-7.75 310 l-FW-MOV-151A 2.3 1031 HIGH 5.92-6.25 304 l-FW-MOV-151B 2.3 1031 HIGH 5.92-6.25 304

  • e l-FW-MOV-151C 2.3 1031 HIGH 5.92-6.25 304 l-FW-MOV-151D 2.3 1031 HIGH 5.92-6.25 304 l-FW-MOV-151E
  • 2.3 1031 HIGH 5.92-6.25 304 l-FW-MOV-151F 2.3 1031 HIGH 5.92-6.25 304 I i*

Table 5 Page 2 of 3 TABLE 5 AS-LEFT THERMAL OVERLOAD SETTINGS MOTOR FULL LOAD THERMAL OVERLOAD RANGE MOV MA~II.

CURRENT (IFLl HEATER COIL II POSITION (AMPERES)

ULTIMATE *TRIP VALUE**

1-FW-MOV-160A 2.3 1031 HIGH 5.92-6.25 304 1-FW-MOV-160B 2.3 1031 HIGH 5.92-6.25 304 l-FW-MOV-1867C 2.8 1033 HIGH 7.34-7.75 309 1-SI-MOV-1867D 2.8 1033 HIGH 7.34-7.75 309 2-CH-LCV-2115B 3.5 1035 HIGH 9.12-9.59 309 e

~-CH-LCV-2115C 0.95 1024 HIGH 2.48-2.62 308 2-CH-LCV-2115D 3.5 1035 HIGH 9.12-9.59 309 2-CH-LCV-2115E 0.95 1024 HIGH 2.48-2.62 308 2-qI-MOV-226 7 A 1.00 1024 HIGH 2.48-2.62 293 2-CH-MOV-2267B 0.95 1024 HIGH 2.48-2.62 308 2-CH-MOV-2269A 0.95 1024 HIGH 2.48-2.62 308 2-CH-MOV-2269B 0.95 1024 HIGH 2.48-2.62 308 2-CH-MOV-2270A 0.95 1024 HIGH 2.48-2.62 308 2... cH-Mov-2'.2.70B 0.95 1024 HIGH 2.48-2.62 308 2-CH-MOV-2275A 2.7 1033 HIGH 7.34-7.75 320 2-CH-MOV-2275B 2.7 1033 H°IGH 7.34-7.75 320 2-CH-MOV-2275C 2.7 1033 HIGH 7.34-7.75 310 2-CH-MOV-2286A 2.8 1033 HIGH 7.34-7.75 310 2-CH-MOV-2286B 2.8 1033 HIGH 7.34-7.75 310 2-CH-MOV-2286C 2.8 1033 HIGH 7.34-7.75 310 2-CH-MOV-2289A 2.8 1033 HIGH 7.34-7.75 310 2-CH-MOV-2289B 2.8 1033 HIGH 7.34-7.75 310 e

2-CH-MOV-2373 2.8 1033 HIGH 7.34-7.75 310

i' TABLE 5 AS-LEFT THERMAL OVERLOAD SETTINGS MOTOR FULL LOAD THERMAL OVERLOAD RANGE MOV' MARK/I CURR~NT (IFLl HEATER COIL II POSIT:{:ON (AMPERES)

ULTIMATE TRIP VALUE**

2-FW-MOV-251A

  • 2. 3 1031 HIGH 5.92-6.2.5 304

.2-FW-MOV-251B 2.3 1031 HIGH 5.92-6.25 304 2-FW-MOV-251C 2.3 1031 HIGH 5.92-6.25 304 2-FW-MOV-251D 2.3 1031 HIGH 5.92-6.25 304 2-FW-MOV-251E

  • 2.3 1031 HIGH 5.92-6.25 304 2-FW-MOV-251F 2.3 I 1031 HIGH 5.92-6.25 304 2-FW-MOV-260A 2.3 1031 HIGH 5.92-6.25 304 2-FW-MOV..-260B 2.3 1031 HIGH 5.92-6.25 304 2-SI-MOV-2867C 2.8 1033
  • HIGH 7.34-7.75 309.

2-SI-MOV-2867D 2.8 1033 HIGH 7.34-7.75 309

  • NOTES:

~ The "High" and "Low" position are marked on the heater coils.

The position determines the current range by the physical geometry of the heater coil.

The overall range of a heater coil is split between the positions, i.e.

A 1033 heater coil has a range of 6.93 amps to 7.75 amps, the "Low" position provides a range of 6.93 amps to 7.33 amps, the "High" position provides a range of 7.34 amps to* 7.75 amps.

    • The ultimate trip value is the percentage of full load current at which the thermal overload will actuate:

UTV

= 125% of Hmin x 110%

IFL where H. = Minimum current of the overall range for a given heater coil min IFL

= Motor full load current (Nameplate current)

TABLE 5 Page 3 of 3

MOV MARK II l-CH-MOV-1289A l-CH-MOV-1289B l-SI-MOV-1867D 2-CH-MOV-2289B 2-FW-MOV-251F 2-FW-MOV-260B 2-SI-MOV-2867D TABLE 6 DIFFERENTIAL PRESSURE TEST MAXIMUM.DESIGN DIFFERENTIAL PRESSURE (PSI) 2,746 2,746 2,630 2,746.

1,184 1,193 2,630 DIFFERENTIAL PRESSURE DURING dP TEST 2,600 2,610 2,600 2,600 1,184 1,193 2,600 Table 6 Page 1 of 1 e

e.

Table 7 Page 1 of 4

1.

TABLE 7 Sununary of Valve and Motor O~erator Data VALVE n

  • MOTOR OPERATOR MOV MARK fl MANUFACTURER TYPE SIZE DRAWING MANUFACTURER SIZE SHOP ORDER NO.

l-CH-J.CV-l 115B Aloyco Gate B"

D-45099 Limitorque SB-00 353839A l-CH-LCV-lll5C Aloyco Gate 4"

E-43504 "

Limitorque SMB-000 345216E e

l-CH-LCV-ll 15D Aloyco Gate B"

D-45099 Limitorque SBD-00 3K9761N l-CH-LCV-lll5E Aloyco Gate 411 E-43504 Limitorque SMB-000 345216E l-CH-MOV-1267A Aloyco Gate 6"

E-43525 Limitorque SMB-000 33160YH l-CH-MOV-1267B Aloyco Gate 6"

E-43525 Limitorque SMB-000 324826A l-CH-MOV-1269A Aloyco Gate 6"

E-43525 Limitorque SMB-000 331607H l-CH-MOV-1269B Aloyco Gate 6"

E-43525 Limitorque SMB-000 324866A l-CH-MOV-1270A Aloyco Gate 6"

E-43525 Limitorque SMB-000 331607H l-CH-MOV-17]0B Aloyco Gate 6"

E-43525 Limitorque SMB-000 331607H l-CH-HOV-1275A Velan Gate 211 137116 Limitorque SMB-00 331227 l-CH-MOV-1275B Velan Gate 2"

137116 Limitorque SMB-00 331227A l-CH-MOV-1275C Velan Gate 2"

137116 Limitorque SMB-00 331227A l-CH-MOV-1286A Velan Gate 3"

88405-2 Limitorque SMB-00 370320A l-CH-MOV-1286B Velan Gate 3"

88405-2 Limitorque SMB-00 345804!

l-CH-MOV-1286C Velan Gate 3"

88405-2 Limitorque SMB-00 3458041 I'

Summary of VALVE MOV MARK fl MANUFACTURER TYPE SIZE l-CH-MOV-1289A Anchor-Darling Gate 3"

l-CH-MOV-1289B.

Anchor-Darling Gate 3"

l-CH-MOV-1373 Anchor-Darling Gate 3"

1-FW-MOV-lSlA Walworth

  • Globe 3"

l-FW-MOV-151B Walworth Globe 3"

1-Fw-Mov.:.1s1c Walworth Globe 3"

1-FW-MOV-lSlD Walworth Globe 3"

1-FW-MOV-lSlE Walworth Globe 3"

1-FW-MOV-lSlF Walworth Globe 3"

l-FW-MOV-160A Crane Gate 6"

l-FW-MOV-l 60B Crane Gate 6"

l-SI-MOV-1867C Anchor-D8;rling Gate 3"

l-SI-MOV-I867D Anchor-Darling Gate 3"

TABLE 7 Valve and Motor oeerator Data DRAWING 0 MANUFACTURER 94-12393 Limitorque 94-12393 Limitorque 94-12393 Limitorque A-9032-M-38A Limitorque A-9032-M-3-BA Limitorque A-9032-M-38A Limitorque A-9032-M-38A Limitorque A-9032-M-38A Limitorque A-9032-M-38A Limitorque A-171913 Limitorque A-171913*

Limitorque 94-12393 Limitorque 94-12393 Limitorque MOTOR OPERATOR SIZE SMB-00 SMB-00 SMB-00 SMB-00 SMB-00 SMB..:.oo SMB-00 SMB-00 SMB-00 SMB-500 SMB-500 SMB-00 SMB-00 Table 7 Page 2 of 4 SHOP ORDER NO. **'

334561G 334561G 334561G 3G9921A 3G9921A 3G9921A 3G9921A 3G9921A 3G9921A 378517A 378517A 334561G 346047A e

e

TABLE 7 Summary of Valve and Motor VALVE n

  • MOV MARK II MANUFACTURER TYPE SIZE DRAWING 2-CH-LCV-2115B Aloyco Gate 311 D-45099 2-CH-LCV-2115C Aloyco Gate 4 II E-43504 2-CH-LCV-2 ll 5D Aloyco Gate 8 II D-45099 2-CH-LCV-2115E Aloyco

.Gate 4 II E-43504 2-CH-MOV-2267A Aloyco Gate 611 E-43525 2-CH-MOV-2267B Aloyco Gate 6"

E-43525 2-CH-MOV-2269A Aloyco Gate 611 E-43525 2-CH-MOV-2269B Aloyco Gate 6 II E-43525 2-CH-NOV-2270A Aloyco Gate 611 E-43525 2-CH-MOV-2270B Aloyco Gat.e 611 E-43525 2-CH-MOV-2275A Velan Gate 2"

137116 2-CH-MOV-2275B Velan Gate 2 II 137116 2-CII-MOV-2275C Velan Gate 2 II 137116 2-CH-MOV-2286A Velan Gate

] II 88405-2 2-:-CH-MOV-2286B Velan Gate 311 88405-2 2-CH-MOV-2286C Velan Gate 3 II 88405-2 Oeerator Data MOTOR OPERATOR MANUFACTURER SIZE Limitorque SB-00 Limitorque SMB-000 Limitorque SBD-00 Limitorque SMB-000 Limitorque SMB-000 Limitorque SMB-000 Limitorque SMB-000 Limitorque SMB-000 Limitorque SMB-000 Limitorque SMB-000 Limitorque SMB-00 Limitorque SMB-00 Limitorque SMB-00 Li mi torque SMB-00 Limitorque SMB-00 Limi torque.

SMB-00 Table 7 Page 3 of 4 SHOP ORDER NO *.

331607F 3{!5216E 353839A 345216E 324826A 345216E 345216E 345216E 345216E 345216E 331227 331227A 345804D 345804I 345804I 3458041 e

e I

MOV MARK n 2-CH-MOV-2289A 2-CH-MOV-2289B 2-CH-MOV-2373 2-FW-MOV-251A 2-FW-MOV-251B 2-FW-MOV-251C 2-FW-MOV-251D 2-FW-MOV-251E 2-FW-MOV-251F 2-FW-MOV-260A 2-FW-MOV-260B 2-SI-MOV-2867C 2-SI-MOV-2867D Summary of VALVE MANUFACTURER TYPE SIZE Anchor-Darling Gate 3"

Anchor-Darling Gate 3"

Anchor-Darling Gate 3"

Walworth Globe 3"

Walworth Globe 3"

Walworth Globe 3"

Walworth Globe 3"

Walworth Globe 3"

Walworth Globe 3"

Crane Gate 6"

Crane Gate 6"

Anchor-Darling Gate J"

Anchor-Darling Gate 3"

NOTE:

  • VENDOR DRAWING#

TABLE 7 Valve and Motor Oeerator Data DRAWING fl

'SMB-00 Table 7 Page 4 of 4 SHOP ORDER NO.

346047A 346047D 346047D 3G9921A 3G9921A 3G9921A

.3G9921A 3G9921A 3G9921A 378517A 378517A 346047D 346047A

e e

e PIGtJU 1

~-------- ~CIKE'T'IME e

Page 1 of 1 C:ONTROL.. sw1Tc;,H

~~~~~-~~,/" TRIP I

I I r I

I I

I I

TYPICAL MOVATS TRACE CLOSE-*TO-OPEN (STATIC CONDITION)

NODz PIOTICTIO!f MAIGI?f.* BYPASS TIMI

~non TIM!

e e

Pagel of l PIGtJU 2 GO NT RO \\. :Sw I T<: 1,1

{

T~I P L

I

1.

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\\

I

~------~----~~~~~~'

1 I

I I-av,ia.,s -ru,4 g --i I

I TYPICAL MOVATS TRACE CLOSE-TO-OPEN (DESIGN DP)

e Pagel of I INDUSTRY STANDARD CALCULATIONS The thrust required 'to open or close a gate or globe valve is the thrust necessary to overcome the following three forces:

Stem thrust or frictional force (Tf)

Packing Load (Lp)

Stem unbalance load (Ls)

The stem thrust is caused by the differential pressure (DP) across the disc which forces the disc against the seat.

This load is normal direction of the valve stem thrust.

The friction between the disc and caused by this pressure load.is overcome by the stem thrust.

Stem thrust (Tf)

Where:

As fv DP

  • DP x AS x fv

=- seat area

=- valve factor (dependent upon valve type)

.. maximum de~ign differential pressure valve or to the the seat The. packing load (Lp) is the drag created by*the valve stuffing box on th~

stem.

These values are based on experience and stuffing box design and are obtained from Limitorque or the valve manufacturer.

The stem unbalance load (Ls.) is the load required when the system operating pressure (Po) working against the stem area (Ao) fore-es the stem toward the opening direction since it is not balanced externally.

Stem Unbalance Load (Ls)* Pox Ao Tile total required thrust (T) is the sum of the three forces described above.

T

  • Tf + Lp + Ls NOTE:

Although stem unbalance load is always present in gate valves it is not always present in globe valves.

A more appropriate equation for a globe valve is Ls (stem area x line pressure stem area x differential pressure).

e Criteria For Use:

e EXT:RAPOLATION METHOD #1 Page 1 of 3

1.

The attainable differential pressure must be at least 90% of the calculated maximum differential pressure.

AND

2.

An acceptab~static MOVATS test has been performed.

The static test must show that the motor operator to be functioning properly.

Assumptions:

The output of the motor operator is assumed to be linear from the pressure at which the test was performed up to the calculated maximum.

TR= 6. Pc x Tm Calcula ti-on:

Where

6. Pm

= Thrust required to operate against the calculated maximum differential pressure based on the thrust measured at a lower differential pressure.

6.Pc

= Calculated maximum differential pressure given in Table 1.

6.Pm

= Actual differential pressure during the test.

Tm

= Thrust measured during the test.

The differential pressure test will be considered acceptable if:

The MOVATS signature (during the Aptest) does not reveal any major problems or signs of impending failure throughout the entire stroke of the valve against the differential pr*essure.

TR must not exceed the limitations of the MOV (i.e: valve, motor operator or GDC-17).

It must be noted that required thrust will exceed Tm.

However, this is not a problem since the torque switch is bypassed during 85% of the safety related stroke.

During this portion of the stroke the motor operator is delivering thrust based on the load.

Thus, it must be ensured that the required thrust does not exceed the thrust limits of the valve, GDC-17 or - _

the motor operator.

e EXTRAPOLATION METHOD# 2 Criteria For Use:

Assumptions:

Calculation:

Where e

Page 2 of 3

1. The attainable differential pressure is less than 90%

of the calculated maximum differential pressure.

2.

An acceptable static MOVATS test has been performed.

The static test must show that the motor operator is functioning properly.

The linearity of the motor operator can be established under the conditions given.

Using the MOVATS equipment, thrust would be measured at various differential pressures (minimum of three) up to the maximum attainable d"ifferential pressure.

Using the formulas for a "best-fit" line through the sample points the required thru~t, TR, would be extrapolated.

T

= !l + T,__+ ___._+_T_n_

n 6P = 1P

+ AP

+.

+ AP 1 __

u_2 u n n

M = J.!1...£1___:_!2 6P 2 +

. + Tn f.Pn)-(nT f.P)

(T 2 + r/

2 2

+.

+ Tn )-n(T) l TR = (6Pc -

!.lP) +MT m

TR== Thrust required to operate a~ainst the calculated maximum differential pressure based in the thrust measurements at lower differential pressures.

T = Average of the measured thrusts.

liP = Average of the sample differential pressures.

N = Number' of sample points.

t L

e e

Page 3 of 3 M = Slope of best-fit line through the sample points.

6Pc = Calculated maximum differential pressure.

Linearity of the points would then be evaluated using standard statistical methods and MOVATS analysis methods.

The test will be considered acceptable if:

- The MOVATS signatures (during the dP test) do not reveal any major problems or signs of impending failure throughout the entire stroke of the valve against the various differential pressures.

TR must not exceed the limitations of the MOV (i.e. valve, motor operator or GDC-17).

  • It must be noted that the required thrust, TR will exceed the measured thrusts.

However, this is not a problem since* the torque switch is bypassed during 85% of the safety related stroke.

During this ~ortion of the stroke the motor operator is delivering thrust based on the load.

Thus, it must be ensured that the required thrust does not exceed the thrust limits of the valve, GDC-17 or the motor operator*.

This method is provided for completeness and is for those cases where the maximum differential pressure is considerably higher than that attainable in the field.

In general, system configurations will permit at least 90% of the maximum differential pressure to be attained and therefore METHOD U 1 would be used.

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