PDR ADOCl pDRq21.028022 05000g00P

Carolina Power & Light CompanyPO Box 1551

Raleigh, North Carolina 27602

Shearon Harris Nuclear Power Plant

Unit 1

Mechanical Analysis and Calculations

for

1CS-752

Charging Pump C to Refueling Water Storage TankIsolation Valve

t:I IBEtitIIIIIPLt

Generic Letter 89-10 Applicable:~Yes No

Valve Classification: Nuclear-Safety RelatedCalculation Number *CS-0022

Revision Prepared By/Date

Signatures on f(le

Signatures on file

Veriffed By/Date Project Engineer/Date Prin. or Res. Eng./Date

Reason incorporation of Electrical Calculation E5-0D1, Revision 1

Signatures on fiLe

Reason incorporation of PCR-6547, Revision 1

Reason See Section 1.2 of @is Calculation. p $ ~ V

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Revisions 3

~a12345678910111213141516171819

ct ve esRaximim

32

2222222222233222

AttachmentAttachmentAttachmentAttachmentAttachmentAttachmentAttachment

A Telecon w/Velan Inc.B Fax from of VelanC . Flow Isolation/Seating ThrustD Average Closing Packing LoadE Final Thrust Due to InertiaF Thrust at Torque Switch TripG Design Verification Record

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~seatio esori t1.0

2 '

3 '

4 '

3 1

3 '

3 '

Purpose

References

Bases and Assumptions

Analyzed Configuration

Valve Function and Control Configuration

Assumptions

Calculations

4.1

4.2

4.3

4 '

4.5

Generic Letter 89-10 Applicability 7

Design Differential Pressure Evaluation 7

Valve Thrust

Recommended Minimum Torque Switch Setting llMotor Capacity Limits

5.0

4 '

4.7

4.8

4.9

Allowable Operating Ranges

Stall Evaluation

Required Limit Switch Settings

Nominal Operating Time

Results, Conclusions and Recommendations

14

15

17

19

Attachment AAttachment BAttachment CAttachment DAttachment EAttachment FAttachment G

Telecon w/Velan Inc.Fax from.'fVelanFlow Isolation/Seating ThrustAverage Closing Packing LoadFinal Thrust Due to InertiaThrust at Torque Switch TripDesign Verification Record

1 page3 pages1 page1 page1 page1 page2 pages

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1 ~ 0 SPUR O~g

1 1 o e o h e ortThe purpose of this report is to document various parameterspertaining to the subject motor-operated valve. This report:

reviews the design differential pressure against whichthe valve may have to operate

calculates the MOV thrust/torque requirements

evaluates the limitations of the actuator, motor, andvalve (evaluation includes effects of a motor stall)evaluates the actuator limit switch settings

1.2 Re so o e sio

PCR-6547, Revision 1, removed the Alternate Mini-flowReliefValves and installed restricting orifices upstream of motor-operated valves 1CS-746 and 1CS-752. The control logic for thesemotor-operated valve will be modified such that they willautomatically open upon high RCS pressure (2300 psig) coincidentwith an "S" signal and will automatically close at the resetpressure of 1750 psig. This revision is necessary to incorporateadditional changes in valve control logic.

II

2.1

2 ~ 2

2.3

2.4

NED Design Guide DG-I.11, "Q-List Motor-Operated ValveMechanical Evaluations", Revision 4.

NED Scope Document Q9-M0-002, Revision 2.

"Analysis of Overload Protection and Motor TorqueOutput for AC Motor Operated Valves" E5-001, Sub-Calculation CPL-MOV-053, Revision 2.

Control Wiring Diagram CAR 2166-B-401 Sheet 319,Revision 5.

2 '

2.6

2 '

Corrective Maintenance Procedure CM-I0002, Revision 4.

Valve Vendor Print — 1364-53850, Revision 1.

Technical Manual ISP, Volume 2, Revision 18.

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2 ' E ued

2.8

2.9

Chemical & Volume Control Piping, Reactor AuxiliaryBuilding, Plans, CAR-2165-G-140, Revision 23.

Chemical and Volume Control System Description, SD-107,Revision 2.

2 ~ 10

2.11

2. 12

2. 13

2. 14

2. 15

2.16

2. 17

2. 18

Crane Technical Paper No. 410, Nineteenth Printing-1980 ~

Technical Memorandum "Performance and Properties ofLimitorque Components", Number TM-G-XXXX-001, Rev. 0.

Piping Line List, CAR-1364-B-0070, Revision 44.

Westinghouse E-Spec. No. G-678852, Revision 2.

Design Basis Document DBD-104, Revision 0.

RAB Tank Area Sections, CAR-2165-G-251, Revision 18.

Piping Isometric 1-'CS-650, Revision 7.

Limitorque Order Sheet 377628-G

PCR-6547, Revision 1, "Alternate Mini-Flow Re-Design«

3 ' BAS S ASS ZONS

3.1 al se o ra ioThe configuration assumed when performing this analysis isas follows:

Limitorque Order Number:Actuator Size & Type:Overall Unit Ratio:Handwheel Ratio:Handwheel Efficiency:Worm Set/Gear Ratio:Worm Set Efficiency:Applications Factor:Installed Spring Pack:Pullout Efficiency:Run Efficiency:Stall Efficiency:

377628-GSMB-0094.0:14 ~ 3P:1

'5%

45:p36%0.960-600-0022-140%50%50%

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3 ~ 1 tio Co

Foot-Pounds:. RPM:Volts

101700460 AC

Manufacturer:Valve Size & Type:Valve Pressure Class:Mean Contact Seat Diameter:Stem Configuration:Stroke Length:

Velan2-inch, globe1500 psig1.8751.125D-1/3P-2/3L1.5 inches

1 — Walkdown Data "Motor-Operated-Valve Data Form"2 — NED Design Guide I.11 (Reference 2.1)3 — Limitorque Order Sheet (Reference 2.17)4 — Emdrac Print (Reference 2.7)

3 ~ 1 1 ss- e erence

The Ebasco (construction identification) tag number for thisvalve is 2CS-V759SB-1.

The Westinghouse Identification Number and Location are 2TM78FNMand 8489B respectively.

3.2 Va ve nct on and Contra Conii ratio3.F 1

The alternate mini-flow line is for dead head protection of theCSIP's during safety injection (specifically the injection phaseof the SIS operation). Valves 1CS-746 and 1CS-752 are designedto open automatically upon high RCS pressure (2300 psig)coincident with an "S" signal and will automatically close at thereset pressure of 1750 psig (Reference 2.18). These valves arelocated in parallel on the two alternate mini-flaw lines whichrelieve to the RWST.

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The following statements are derived from references 2.4, 2.5 and2.18

'his

MOV automatically opens upon high RCS pressure (2300 psig)coincident with an "S" signal and will close at the resetpressure of 1750 psig.Under normal conditions this NOV can only open if valves 1RH-25,1RH-63 and either 1CS-165, 1CS-166 or 1CS-753 are closed.

This HOV trips out via the torque switch in the closing directionand is electrically de-energized by the open limit switch, in theopening direction.The open torque switch and thermal overloads are automaticallybypassed on loss of offsite power or a safety injectionactuation.

1) The minimum torque delivered by the actuator motor isassumed to be 5.9 ft-lbs per reference 2.3.

2) The maximum torque delivered by the actuator motor isassumed to be 11.2 ft-lbs per reference 2.3.

3) The Stem Factor for a coefficient of friction of 0.15 is0.0156 and a coefficient of friction of 0.2 is 0.0179(reference 2.1).

4) The flow limiting component in the alternate mini-flow lineis the fixed orifice. The flow capacity of this orifice is60 gpm nominally (reference 2.18).

5) The maximum operating temperature and design temperature forline number 2CS2-786SN-1 is 130 F and 200 F respectively(reference 2.12).

6) Piping frictional losses are ignored when calculatingdifferential pressure at the valve.

7) The 0.433 psig/ft conversion factor used in this calculationis based on water at 60 F (reference 2.10).

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4.0

F 1

Valve 1CS-752 is located in the CSIP alternate mini-flow line andis designed to open automatically upon high RCS pressurecoincident with an "S" signal and automatically close at thereset pressure (Reference 2.18). The alternate mini-flow line isfor dead head protection of the CSIP's during safety in)ection(specifically the injection phase of the SIS operation).

Based on the preceding paragraph and the guidance provided inreference 2.2, the requirements of Generic Letter 89-10 area licable to this MOV.

2

2 ~ 1 s e nlet Pre su

Upstream pressure will be assumed to be equal to the shutoff headof the CSIPs plus the static head of the RWST at its maximumlevel.CS s o a

6200 feet (ref. 2.7) * 0.433 psig/foot = 2,684 psig

tat ea

RWST Maximum Level 301 ft. (ref. 2.15)

Valve Elevation = 249 ft. (ref. 2.16)

(301 ft. - 249 ft. ) * 0. 433 psig/ft si

Upstream Pressure is equal to: 2,707 psig

4 ' ' D t essu e

The maximum differential pressure (dP) occurs when maximizing theupstream and minimizing the downstream pressure. To maximize dP,it is assumed that the downstream pressure is 0 psig.

Therefore, the maximum differential pressure is 2,'707 psid.

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4.2.2 f o o t a re s r o tinued

Note: The subject MOV is a pressure under the seat globe valve.

The most conservative opening differential pressure assumption isto assume 0 psid since any line pressure would assist the valvein opening. For this reason opening upstream pressure anddifferential pressure are not calculated.

4 ~ 3 ~ 1 1 s e d

The maximum thrust requirements for the operation of thisprossuro under the seat globo valve may be determined by thefollowing equations, which are provided by reference 2.1.

CLOSING THRUST = (dp * A * FV) + SBL + [SA*(P-dP)]

OPENING THRUST = SBL — (dP * A) - [SA*(P-dP)]

where:

THRUST =

dp

The required stem thrust, in pounds-force.

The differential pressure across the valve.

The seat area of the valve, which is 2.76 squareinches based on contact, seat diameter (Section3.1) .

An empirical valve factor, which is 1.1 perreference 2.1.

SBL The stuffing box load, or packing drag, expressedin pounds-force. This is 1500 pounds perreference 2.1.

SA The area of the stem, in square inches. For thestem diameter given in section 3.1, this area is0.99 square inches.

The inlet system pressure.

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4.3. 1 V ve h e red t mum dP cont.

From the information given above, the closing thrust may, becalculated.

CLOSING THRUST ~ (2i707*2.76*1 ~ 1) + 1,500 + [0.99*(2i707-2,707]

Si218 + 1,500 + 0

= 9,718 pounds

The value of 9,718 pounds includes a conservatism ofapproximately 104 due to the assumed valve factor of 1.1, and anadditional conservatism of approximately 500 to 1,000 pounds dueto the assumed packing load of 1,500 pounds (see attachment D).In addition, normal CP&L practice is to multiply the calculatedclosing thrust by 1.15 in order to account for possible

VOTES'easurementerrors and torque switch repeatability. Thus, thetheoretical calculated closing thrust is 11,176 pounds.

NOTE: Liberty Technologies issued a 10CFR21 notification on10/2/92 which documents potential thrust measurementinaccuracies due to torsional effects on small stems.A review of the design of 1CS-752 has confirmed thatthe anti-rotation device is located in the yokeflange, above that portion of the stem where theVOTES calibrator was installed. Thus, the subject10CFR21 notification does not apply to this valve.

The calculated minimum allowable closing thrust of 11,176 pounds-is within the thrust capabilities and ratings of the valve andactuator, which are 14,432 and 14,000 pounds, respectively.However, there is a concern that inertial effects may cause thefinal thrust to exceed the continuous ratings of the actuator andvalve. A review of'ifferential pressure test data for 1CS-752,which was tested at approximately 2,730 psid, indicates thatthrust at torque switch trip was 11,131 pounds (attachment F).Final seating thrust due to inertia was 13,432 pounds (attachmentE), which represents a thrust increase of 214. Since the assumedVOTES measurement error is 2104, the actual final thrust mayexceed the continuous thrust ratings of the actuator and valve.Thus, it is desirable, if possible, to adjust the torque switchto trip at a lower value of thrust.

1CB-752 Page No: 9

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4 ~ 3 ~ 1 v h st Re at Mmrimum dP cont.

Test data for 1CS-752 indicates that flow isolation was achievedat 7,804 pounds (attachment C) of thrust at an indicated test dPof 2730 psid. This test was performed with a spool pieceinstalled in lieu of the relief valve. The proposedconfiguration of multiple orifices installed upstream of the MOVswill reduce upstream pressure at the valve, thereby making theresults of this previous test conservative. The average closingpacking load during the RF03 test was 456 pounds (attachment D).This packing load is included in the 7,804 pounds of thrust atflow isolation; therefore, the thrust required to overcomedifferential pressure is equal to 7,348 pounds. In order toallow for future packing adjustments, a packing load of 1500pounds will be assumed.

From the information given above, the expected closing thrust maybe calculated.

CLOSING THRUST = 7,348 + 1,500 + [0 '9*(2,707-2,707]

7,348 + 1,500 + 0

= 8,848 pounds

A differential pressure and line pressure of zero is assumed toprovide for the most conservative opening thrust. From theinformation given above, the closing thrusts may be calculated.

OPENING THRUST = 1,500 - (0*2.76) - [0 '9*(0-0)]1,500 - 0 - 0

= 1,500 pounds

4 '.2 ni ed D ic rustThe minimum allowable closing/opening thrust at torque switchtrip shall be 1.15 times the calculated required thrust whenactuator torque is ) 50 foot-pounds and 1.20 when actuator torqueis < 50 foot-pounds, in order to account for possible measurementerrors and torque switch repeatability. Thus,

MINIMUM CLOSING DIAGNOSTIC THRUST = REQUIRED THRUST * 1.15

8,848 * 1.15

10,175 pounds

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MINIMUM OPENING DIAGNOSTIC THRUST = REQUIRED THRUST * 1.20

1,500 * 1.20

1,800 pounds

4.4 eco en ed i i um To e S h Se

The input, torque (actuator torque) required to produce thethrust values calculated in section 4.3, may be calculated usingthe following equation (reference 2.1).

ACTUATOR TORQUE = THRUST * STEM FACTOR

Based on the stem factors given in section 3.3, Assumption 3, theactuator torque for the normal opening and closing conditions maybe calculated as follows:

MINIMUM CLOSING TORQUE ~ 10,175 * 0.0179

= 182 ft-lbs

MINIMUM OPENING TORQUE = 1,800 * 0 0179

32 ft-lbs

4.5 or Ca ts

The available motor torque at degraded-voltage conditions limitsthe available actuator torque. If a torque switch is set abovethe minimum available torque, there is a possibility of stallingthe motor before the torque switch can actuate. In order toprevent this situation, the maximum torque switch setting valueshall not exceed the minimum available torque provided by themotor at degraded-voltage conditions.

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4 ~ 5 ~ 1 or ea mt Mo o

According to reference 2.1, the closing actuator torque that willbe developed by the minimum available motor torque (reference2.3) is calculated as follows.

4

ACTUATOR TORQUE = MOTOR TORQUE * UNIT RATIO * RUNNING EFF. * 0.9

5.9 * 94.0 * 0.50 * 0.9

250 foot-pounds

4 ~ 5 ~ 2 e i c x To e s Limited to Ca

According to reference 2.1, the opening actuator torque that willbe developed by the minimum available motor torque (reference2.3) is calculated by:

ACTUATOR TORQUE = MOTOR TORQUE * UNIT RATIO * PULLOUT EFF. *APPLICATION FACTOR

5.9 * 94.0 * 0.4 * 0.9

200 foot-pounds

4 '4 ~ 6 ~ 1 st a d Tor e imits

stLmtThe allowable thrust limits of the actuator and valve are shownbelow. The limiting components in the opening and closingdirections define the maximum allowable continuous thrustsetting.

COMPONENT

ACTUATOR

VALVE CLOSING

VALVE OPENING

LIMIT POUNDS

*12 600

**12 989

**12 989

SOURCE

REF. 2. 1

Attachment B

Attachment. B

This limit is 904 of the Limitorque qualified continuousrating.These limits represent 90% of the Velan continuous dutyratings as provided in attachment B.

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4 ~ 6 ~ 1 h s an Tor e im ts Co t ued

or

The allowable torque limits of the actuator and valve are shownbelow. The limiting component defines the maximum allowablecontinuous torque setting.

COMPONENT

MOTOR CLOSING'OTOROPENING

ACTUATOR

SPRINGSET PACK

LIMIT FOOT-POUNDS

250

200

*225

250

SOURCE

SECTION 4.5SECTION 4.5REF. 2. 1

REF. 2.11

* This limit is 90% of the Limitorque qualified continuousrating.

4 ' ' a e o a

From reference 2.1, the wormshaft torque that must be applied toachieve a required output torque may be calculated by:

WORMSHAFT TORQUE = UIR U UWS RATIO * WS EFFICIENCY

4.6.2.1 Clos o shaft To e

The equivalent wormshaft torque is provided for the purpose ofverifying the closed torque switch setting with a torque wrench.

MINIMUM WORMSHAFT TORQUE

MAXIMUMWORMSHAFT TORQUE

45 * 0 '6135 INCH-POUNDS

45 * 0 36

167 INCH-POUNDS

11.23 FOOT-POUNDS

13.89 FOOT-POUNDS

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4.6.2.2 e o 0

For this valve the recommended minimum opening torque setting is32 foot-pounds, and the maximum allowable open torque setting is200 foot-pounds. However, it is not practical to set the openingtorque switch with a torque wrench because this would cause thestem to be forced against the backseat. Therefore, the opentorque switch shall be adjusted to a setting of "1" to "2"(Reference 2.11).

4 ' t luat ont

According to electrical analysis (reference 2.3) performed forthis valve, the maximum available motor torque at the mostfavorable conditions is 11.2 foot-pounds.

According to reference 2.1, the stall torque of the operator maybe calculated by:

ACTUATOR STALL TORQUE

MAXIMUMMOTOR TORQUE * UNIT RATIO * STALL EFFICIENCY

11.2 * 94.0 * .50 ~ 526 FOOT-POUNDS

The corresponding stall thrust may be calculated as follows(reference 2.1):Note: The stem factor for a coefficient of friction of 0.15 isused for conservatism (see section 3.3).

STEM FACTOR

33, 718 POUNDS0 '156

The one-time limits of the valve and actuator are as follows:

COMPONENT

ACTUATOR TORQUE

ACTUATOR THRUST

VALVE CLOSING

VALVE OPENING

LIMIT

500 FOOT-POUNDS

35 000 POUNDS

35 616 POUNDS

35 616 POUNDS

SOURCE

REF F 1

REF. 2. 1

ATTACHMENT B

ATTACHMENT B

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4.7 Stal al ation Cont n d

The calculated stall forces for this Motor Operated Valve (MOV)indicate that the potential does exist for damage to the actuatorif a stall should occur.

This does not indicate that an operability concern exist. Astall condition is not a normal mode of operation for a MOV, andis the result of a prior equipment failure.A stall condition is created by the failure of a limit switch ortorque switch to stop valve motion when desired. This causes theoperator to continue to drive the valve until a mechanical limit/either the seat or backseat, is reached, at which time the motoris forced to stop or "stall". If this failure is assumed tooccur during an accident, it constitutes the "single activefailure", and the stall condition is a continuation of thisfailure. The stall will not render the MOV inoperable, becausethe switch failure will have already done so.

4.8 Re red Limit Switc Se

As shown in reference 2.4, the actuator is equipped with a fourtrain limit switch assembly, arranged in the following manner:

4.8.1 Bases of i it Swi a t em totor 1

Rotor $ 1 acts as the open limit switch, in order to stop themotor after the valve has traveled to the full open position. Itprovides position indication (it turns off the green indicatorlamps when the valve is full open).

The practice at SHNPP has been to set the open limit switches toactuate when the disc is at 964 of full open position unlessotherwise specified on the control wiring diagram (reference2.5). Operating experience has shown that this setting providesfor proper flow rate, however, RF03 testing of a sister valveidentified that. the valve stem was coasting into the backseat.Thus, a setpoint of 964 may not be adequate and therefore, asetpoint of 904 is recommended (see Attachment A forjustification).

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4 F 1 s 8 0 Sw tc et i e

Qotb~When the valve is given a signal .to close, the motor runs in theclosing direction until the torque switch is actuated, whichstops the motor.

Rotor 42 is wired to provide a bypass around the clase torqueswitch until the valve is at the 44 position. In addition, rotorg2 provides valve position indication (it turns off the redindicator lamps when the valve is fully closed).

In order to assure proper position indication in the closedirection, the clase limit switch should be adjusted to indicatea closed condition only after the disc has covered the valveseat. The practice at SHNPP has been to set the clase limitswitches to actuate when the disc is at the 44 position unlessotherwise specified on the control wiring diagram (reference2.5). Operating experience indicates that 44 from fully closedis adequate to meet the setpoint requirements for rotor g2.Thus, 44 is an acceptable setting, and can be retained.

Rotor $ 3 is not used.

Rotor iRotor $ 4 provides position indication to the main terminationboard. It also provides a permissive which allows valve 1RH-25to open provided valve 1CS-746 is closed and other conditions aremet.

In order to assure proper position indication in the closedirection, the close limit switch should be ad)usted to indicatea closed condition anly after the disc has covered the valveseat. The practice at SHNPP has been to set the close limitswitches to actuate when the disc is at the 44 position unlessotherwise specified on the control wiring diagram (reference2.5). Operating experience indicates that 44 from fully closedis adequate to meet the setpoint requirements for rotor $ 4.Thus, 44 is an acceptable setting, and can be retained.

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4 ' ' S h tLimit Switc oto e ti s

In this case, the various limit switch rotors are required to beset as follows:

ROTOR N1s 904 of full open

ROTOR 42ss44 of full open

ROTOR 43s NA

ROTOR $ 4s 44 of full open

The preferred method for setting limit switches is to determinethe number of handwheel turns needed for a full stroke, and thento set the switches at the required percentages based upon that.The total number of handwheel turns needed to stroke the valvemay be determined if the stroke length, thread lead, andhandwheel ratio are all known.

The total handwheel(HW) turns to fully stroke the valve iscalculated as follows:

TURNS' VALVE STROKE / THE&AD LEAD * HANDWHEEL RATIO

1.5 inches / .667 inches * 4.38

9.85 handwheel turns

44 of 9.85 handwheel turns is equal to 3/8 handwheel turn.

104 of 9.85 handwheel turns is equal to 1 handwheel turn.

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0 0 0 s0 s va th ie With the information

provided in section 3.1, the stem nut revolutions per valvestroke and the stem nut revolutions per minute can be determinedas follows:

"/LEAD

= ~50.667

2.25

STEM NUT REVOLUTIONS/MINUTEOVERALL UNIT RATIO

94 '

18.09

With these calculated values the nominal expected operating timeof this valve can be calculated using the following equation:

STROKE TIME = 0STEM NUT REVOLUTIONS/MINUTE

18. 09

0. 12 MINUTES/VALVE STROKE

7.5 SECONDS/VALVE STROKE

This valve has no specific stroke time requirements other thanthe generic 10 second maximum stroke time required by reference2 '3.

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5 ' S

5.1 Res 1 s d Co clusio s

AT ONS

1) The actuator torque switch and limit switch rangesshall be established as shown in table 5.1.

TABLE SIC T ETUP UIRE S

CLOSING THRUST RANGE (POUNDS)MINIMUM MAXIMUM

,OPENING THRUST RANGE (POUNDS)MINIMUM MAXIMUM

10 175 12 600 1 800 12 600

RECOMMENDEDCLOSE TORQUE SWITCH SETTINGSMINIMUM MAXIMUM

RECOMMENDEDOPEN TORQUE SWITCH SETTINGS

MINIMUM MAXIMUM

182 FT-LBS 225 FT-LBS 32 FT-LBS 200 FT-LBS

EQUIVALENTCLOSE WORMSHAFT TORQUE

MINIMUM MAXIMUM

135 IN-LBS 167 IN-LBS

EQUIVALENTOPEN TORQUE SWITCH DIAL SETTING

MINIMUM MAXIMUM

ROTOR ¹1904

1 HW TURNFROM FULLOPEN

LIMIT SWITCH SETTINGSROTOR ¹2 ROTOR ¹3

N/A

3/8 HW TURNFROM FULLCLOSED

ROTOR ¹4

3/8 HW TURNFROM FULLCLOSED

5.2 eco e a

It is recommended that this valve be retested at maximumachievable differential pressure and flow upon completion of PCR-6547. The test results will be evaluated to confirm the setupranges established in this calculation are acceptable.

1CS-752 Page No: 19

BETWEEN

TELECOH

MECHANICAL ENGINEERCAROLINA POWER & LIGHT

Attachment ACalc. No. 'CSEE%2

Revision 2Valve No. 1CS-752

Page 1 of 1

AND. MR.MANAGER OF ENGINEERINGVELAN INC.

DATE J'ANUARY 6, 1992

TIME: 2:35PM

SUBZECT: 2" AND SMALLER VELAN GLOBE VALVES

MR. STATED THAT 90\ OF FULL QFEN STROKE WOULD ALLOW FULLDESIGN FLOW.

Attachment BCalc. No. 'CS4022

Revision 2Valve No. 1CS-752

Page 1 of 3

YlAFAXhfumber of pagesincluding this page:~

Pfeeee reply by FAX to:Q Head Qffice and

Plant No. 1 (514) 748%635Q Marketing (514) 748-7592Q Plant No, 2 (514) 341-3032Q Spare Parts (514) 342-2311Q Plant No. 3 (802) 862~14Q Plant No, 4 (514) 378%865

Message hlo.o

Oate;

To:

- I .5Attention:

Copies to:

Sub Jeet I Reference:

...9rham nr6. ~ W cod'~. ~+ ...

q ds 0'E'.

iGLOBE VALVE - 2 in

STEM ANALYSIS

Attachment BCalc. No. 'CS4022

Revision 2Valve No. 1CS-752

Page 2 of 3

UTILITY: CAROLINA POWER AND LIGHT Order no. P9-

W.I AD.4:

VALVE DWG:

STEM DWG.

2TM78FNM

E73-62S

7913-22

Design Temp.

Pressure Class

125 deg F

1500 lb

STEM THRD.

STEM MAT.

1 1/8 — 3 ACME double lead

SS 630 A-564

Sa ~ 45950 Psi Code Case N-62-4

STEM DATA

d1

d2 0.917 in-0.425 in.0.396 in.

0.792 in. root dia of thread

dim. at sec. d2

dim. at sec. k

rad. d/2

0.016 ft.lb./lb thread factor

a2

a3

0.492 in."2

0.660 in. 2

1.224 in."20.039 in. 4

0 in.0 in.

0-019 in."4

root area of thread

area of sec. d2

area at d2 in shear

polar moment of iner-tia af @ram thread

eff. length of stem

torque ann radius

Moment of Inertia

Er2'd TTE2 2M WTS 2d Sled 3&kB NU13h 90:ST 26'8 lDO

GLOBE VALVE - 2 in

STEM ANALYSIS

Attachment BCalc. No 'CS-0022

Revision 2Valve No. 1CS-752

Page 3 of 3

UTILITY: CAROLINA POWER AND LIGHT Order no. P9-

W.I AD.

VALVE DWG:

STEM DWG:

2TM78FNM

E73-62S

7913-22

Design Tempo

Pressure Class

125 deg F

1500 lbSTEM THRD. 1 1/8 - 3 ACME double lead

STEM MAT. SS 630 A-564

Sp ~ 113396 Psi Code Case N-62-4

STEM CALCULATION

At Section dl

Max Tr

At Section d2

14432 lbs. from Eq. (19)

Max Tr

At Section Js

30347 lbs. from Eq. (20)

Max Tr 33756 lbs. from Eq. (21)

MAX Thrust/Torque CLOSING OPENINGTr./lbs. Tor./lb-ft Tr./lbs. Tor./j.b-xt

CONTINUOUS DUTY

ONE TIME

14432

35616

224 14432

554 35616

224

554

KrE'd TTKZ ZW ITS Zd Sled 3WdS NU l3h d,t:ST 26, 88 130

,

ATTACHMENTC~CS~022, R~. 2

Page i of i

Test: 4

3~9i22'49'ii

NI'Z8 SZHSDR

5000

Tag.'iCS-752

-%0000

orce = -tBM

-asooo

.20000

52297 53097 B997 55497 SCO9r P$ 97

SIITQl A

SIITC8 II

SIIKH C

SI|llKII 9

52N7 53S97

Tiae in Seconds K397

S5091 SSO9) SC$ 93 5 7091

1CS-752: Flow Isolatioa/Seating Timist 2730 PSID

ATlACHMENTD'CS4K2, Rev. 2

Page 1 of 1

Test'%2%i22'25'45

VRRR IOR.%50

-%60

Tag'CS-752

once =

(1bS) -%rO

.%80

25209 25309 25%09 25509 25609 25309

OLS

25209 25309

Time in Seconds K453

25%09 25509 25309

1CS-752: Average C1osing PacMng Load, Static Conditions

ATTACHMENTE'CS-0022, Rev.2

Page 1 of 1

Test: 5

KNi22'49'ii

Tag: iCS-752

VOVIt3 SKOR

orce = -i3$32iS000

20000

5530% SS%0i SSSOi 55 5570% 5540%

SMITCH B

%ITCH C

SMITCH D

SS30i SSIOi

Time in Seconds 55,688

SSS0i SSi SPOi SSSOII,

Y-Km N

1CS-752, Final 'Adust Due to Inertia

ATTACHMENTF'CS-0022, Rev2Page 1 of 1

Tcsti 4

3)23/91

Z2'4S'ii

V|jYES SENSOR

-10000

Tag'tm-752

orce = -iii3i15000

.20000

5530% $ 50'f 55405 5570} $ 5005

%ITCH A

%ITCH C

5530'k 55%0% 550% 5580% 5570% 5500'I

Time in Secands 55.488 Y-EXPND ON

1CS-752, 'Humt At Torque Switch Trip

DISCIPLINE DESICN VERIPICATION RECORD

l. fnstnmtfma to Verification Persamel

Attachment GCalc. No. 'CS-0022

Revision 3

Valve No. 1CS-752

Page 1 of 2

PlantProjectFile No.

OocuIIent No. " C,5 ~>< eev 2

a

Level

ÃI D (Class A)

] Selsmlc (Class 8)( ] FP-g (Class 0)( ] Other

Design veriffcation should be done in accordance Mich ANSl N45.2.11, Section 6, as acIended by Regulatoryguide 1.64, Rev. 2.

Special instructions:

Discipline Project Engineer

ll. Verification OocLssentatfIn

Appt fcabf l 1 tyi ci 1

Hechani catHVAC

Electricalle

Other

()(](]

isci iCivil StructuralSefsaIic Equip. Dual.Civil StressFire ProtectionEnvironacntal DualificationHwen factorsHaterials

()(](](](](]()(]()

Veriffcation Nethods Used:

g] Design RevfeII

Oesfgn Oocunent AccepefIblet Y~Design Verifier

( ] Alternate Calculations

No ( ] - coIments attached.Date

( ] guatffication testing

Acksxwtedgeeent of Verification:(OPE) Date

ill. Resotutfm of CossssItst

Coanents Resolved (See Attached):(RE)Action taken sakes Design Oocuaents Acceptable:Design Verifier

Date

Date

(OPE) Date

HEO procedure 3 ~ 3/Rev. 5O

o0 ISCIPLIME DES IQI VER IF I CAT IQI RECIRD

CCHMEMT SHEET

Attachment GCalc. No. «CS-0022

Revision 3

Valve No. 1CS-752

Page 2 of 2

Plant

Project

File Mo.

Doc+vent Mo. O'CV-Cu2% R v 3

This sheet is only required &en ccements are being cade.

Count

Mo. Comnent Reso lut ion

Resolved

Initial/Date

,I

MED Procedure 3.3/Rev. 50

,i