ML18010A855

Rev 3 to Calculation CS-0021, Mechanical Analysis & Calculations for 1CS-746 Charging Pump a to Refueling Water Storage Tank Isolation Valve. Calculation Applicable to GL 89-10

ML18010A855
Person / Time
Site:	Harris
Issue date:	10/12/1992
From:	CAROLINA POWER & LIGHT CO.
To:
Shared Package
ML18010A852	List: ML18010A851 ML18010A853 ML18010A854 ML18010A855 ML18010A856 ML18010A864 ML18010A865 ML18022A904 ML18022A905 ML18022A906 ML18022A907
References
CS-0021, CS-0021-R03, CS-21, CS-21-R3, GL-89-10, NUDOCS 9210280222
Download: ML18010A855 (43)

Text

Carolina Power & Light Company

~

PO Box 1551 Raleigh, North Carolina 27602 Shearon Harris Nuclear Power Plant Unit 1 Mechanical Analysis and Calculations for Charging Pump A to Refueling Water Storage Tank Isolation Valve NII IIKBIIIt I lliIIL(

Generic Letter 89-10 Applicable~Yes No Valve Classification: Nuclear-Safety Related Calculation Number *CS-0021 Revision Prepared Sy/Date Verified Sy/Date Project Engineer/Date Prin. or Res. Eng./Date Signatures on file Signatures on file Reason Incorporation of Electrical Calculation E5-001, Revision 1 Signatures on file Reason Incorporation of PCR.6547, Revision 1 n.

Reason See Section 1.2 of His Calculation.

9210280222 92l0i2 PDR ADOCK 05000400 P PDR

Prepared By< Calo. ZDt *CS-0021 Cheeked Byc Revisions 3 st f ective

~yg ~Rev ~so 1 3 2 2 3 3 4 2 5 2 6 2 7 2 8 2 9 2 10 2 11 2 12 2 13 2 14 2 15 3 16 2 17 2 18 2 19 2 Attachment A Telecon w/Velan Inc. 2 Attachment B Fax from of Velan 2 Attachment C Flow Isolation/Seating Thrust 2 Attachment D Average Closing Packing Load 2 Attachment E Final Thrust Due to Inertia 2 Attachment F Thrust at Torque Switch Trip 2 Attachment G Design Verification Record 3 1CS-746 Pago No: 1

\

7

Prepared By: Calc. IDt +CS-0021 Checked By: Revision: 2 TABLE OF Section scr ti 1.0 Purpose 2.0 References 3.0 Bases and Assumptions F 1 Analyzed Configuration 3 ' Valve Function and Control Configuration 3.3 Assumptions 4.0 Calculations 4 ' Generic Letter 89-10 Applicability 4.2 Design Differential Pressure Evaluation 7 4.3 Valve Thrust 4 ' Recommended Minimum Torque Switch Setting 11 4.5 Motor Capacity Limits 4.6 Allowable Operating Ranges 12 4.7 Stall Evaluation 14 4.8 Required Limit Switch Settings 15 4.9 Nominal Operating Time 17 5~0 Results, Conclusions and Recommendations 19 Attachment A Telecon w/Velan Inc. 1 page Attachment B Fax from of Velan 3 pages Attachment C Flow Isolation/Seating Thrust 1 page Attachment D Average Closing Packing Load 1 page Attachment E Final Thrust Due to Inertia 1 page Attachment F Thrust at Torque Switch Trip 1 page Attachment G Design Verification Record 2 pages 1CS-746 Page No! 2

Prepared By- Calc. ZD- *CS-0021 Checkod By! Revisions 3 1~0 ~UR Qgg 1.1 Pu ose oi th s Re ort The purpose of this report is to document various parameters pertaining to the subject motor-operated valve. This report:

reviews the design differential pressure against which the valve may have to operate calculates the MOV thrust/torque requirements evaluates the limitations of the actuator, motor, and valve (evaluation includes effects of a motor stall) evaluates the actuator limit switch settings 1.2 Reason for ev sion PCR-6547, Revision 1, removed the Alternate Mini-flow Relief Valves and installed restricting orifices upstream of motor-operated'valves 1CS-746 and 1CS-752. The control logic for these motor-operated valve will be modified such that they will automatically open upon high RCS pressure (2300 psig) coincident with an "S" signal and will automatically close at the reset pressure of 1750 psig. This revision is necessary to incorporate additional changes in valve control logic.

2 ' E NCES 2 ' NED Design Guide DG-I.11, "Q-List Motor-Operated Valve Mechanical Evaluations", Revision 4.

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

2.3 "Analysis of Overload Protection and Motor Torque Output for AC Motor Operated Valves" E5-001, Sub-Calculation CPL-MOV-051, Revision 2.

2.4 Control Wiring Diagram CAR 2166-B-401 Sheet 317, Revision 5.

2 ' Corrective Maintenance Procedure CM-I0002, Revision 4.

2.6 Valve Vendor Print - 1364-53850, Revision 1.

2 7 Technical Manual ISP, Volume 2, Revision 18.

1CS 746 Page No: 3

Prepared Calo. ID: *CS-0021 Revision!

By-'heakod By: 2 2.0 REFE N ES Continued 2.8 Chemical & Volume Control Piping, Reactor Auxiliary Building, Plans, CAR-2165-G-140, Revision 23.

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

2.10 Crane Technical Paper No. 410, Nineteenth Printing-1980 2.11 Technical Memorandum "Performance and Properties of Limitorque Components", Number TM-G-XXXX-001, Rev. 0.

2 '2 Piping Line List, CAR-1364-B-0070,'evision 44.

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

2.14 Design Basis Document DBD-104, Revision 0.

l 2 ~ 15 RAB Tank Area Sections, CAR-2165-G-251, Revision 18.

2.16 Piping Isometric 1-CS-651, Revision 5.

2.17 Limitorque Order Sheet 3D0652-D 2.18 PCR-6547, Revision 1, "Alternate Mini-Flow Re-Design" 3 ' BASES SUM ZONS 3.1 al sed o fi ratio The configuration assumed when performing this analysis is as follows:

Limitorcyxe Order Number: 3D0652-D Actuator Size & Type: SMB-00 Overall Unit Ratio: 82.0:1 Handwheel Ratio: 4 ~ 3P Handwheel Efficiency:

1'54 Worm Set/Gear Ratio: 45:p Worm Set Efficiency: 364 Applications Factor: 0.9 Installed Spring Pack: 60-600-0047-1 Pullout Efficiency: 404 Run Efficiency: 504 Stall Efficiency: 504 1CS-746 Page No! 4

Prepared By! Calc. ID! *CS-0021 Checked By< Revt.sion! 2 3~1 a e o ration Conti ue Foot-Pounds: 10 RPM: 1700 Volts: 460 AC Manufacturer: Velan Valve Size & Type: 2-inch, globe Valve Pressure Class: 1500 psig Mean Contact, Seat Diameter: 1.875 Stem Configuration: 1.125D-1/3F-2/3L Stroke Length: 1.5 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-reference Number s The Ebasco (construction identification) tag number for this valve is 2CS-V757SA-1.

The Westinghouse Identification Number and Location are 2TM78FNM and 8489A respectively.

3 ' Co ol 3~2~1 V ve t o The alternate mini-flow line is for dead head protection of the CSIP's during safety injection (specifically the injection phase of the SIS operation). Valves 1CS-746 and 1CS-752 are designed to open automatically upon high RCS pressure (2300 psig) coincident with an "S" signal and will automatically close at the reset pressure of 1750 psig (Reference 2.18). These valves are located in parallel on the two alternate mini-flow lines which relieve to the RWST.

1CS 746 Page No: 5

Prepared Byt Calo. ZDt *CS-0021 Checked Byt Revisiont 2 3~2 ~2 t o o fi ration following statements are derived from references 2.4, 2.5

'he and 2.18 MOV automatically opens upon high RCS pressure (2300 psig)

'his coincident with an "S" signal and will close at the reset pressure of 1750 psig.

Under normal conditions this MOV can only open if 1RH-63 and either 1CS-165, 1CS-166 or 1CS-745 are closed.

valves 1RH-25, This MOV trips out via the torque switch in the closing direction and is electrically de-energized by the open limit switch, in the opening direction.

The open torque switch and thermal overloads are automatically bypassed on loss of offsite power 'or a safety in)ection actuation.

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

2) The maximum torque delivered by the actuator motor is assumed to be 11.3 ft-lbs per reference 2.3.

3) The Stem Factor for a coefficient of friction of 0.15 is 0.0156 and a coefficient of friction of 0.2 is 0.0179 (reference 2.1).

4) The flow limiting component in the alternate mini-flow line is the fixed orifice. The flow capacity of this orifice is 60 gpm nominally (reference 2.18).

5) The maximum operating temperature and desi.gn temperature for line number 2CS2-785SN-1 is 130 F and 200 F respectively (reference 2.12).

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

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

1CS-746 Page Not 6

Prepared By: Calc.'D: *CS-0021 Checked By: Revision: 2 0 C ONS 4~1 Valve 1CS-746 is located in the CSIP alternate mini-flow line and is designed to open automatically upon high RCS pressure coincident with an "S" signal and automatically close at the reset pressure (Reference 2.18). The alternate mini-flow line is for dead head protection of the CSXP's during safety injection (specifically the injection phase of the SZS operation).

Based on the preceding paragraph and the guidance provided in reference 2.2, the requirements of Generic Letter 89-10 are a licable to this MOV.

4 ' e en ia Pressu e 2~1 e Press Upstream pressure will be assumed to be equal to the shutoff head of the CSIPs plus the static head of the RWST at its maximum level.

S s a 6200 feet (ref. 2.7)

• 0.433 psig/foot = 2,684 psig Sta RWST Maximum Level = 301 ft. (ref. 2.15)

Valve Elevation. = 249 ft. (ref. 2.16)

(301 ft. - 249 ft )

• 0.433 psig/ft 3 s1 Upstieam Pressure is equal to: 2,707 psig 4.2.2 i ere ti essure The maximum differential pressure (dP) occurs when maximizing the upstream 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.

1CS-746 Page Ho: 7

Prepared By! Calo ~ ZDt *CB-0021 Checked Byt Revt.siont 2 i.2 ~ 2 t ed Note: Th'e subject MOV is a pressure under the seat globe valve.

The most conservative opening differential pressure assumption is to assume 0 psid since any line pressure would assist the valve in opening. For this reason opening upstream pressure and differential pressure are not calculated.

3 V v 3 1 V ve e t The maximum thrust requirements for the operation of this pressure under the seat globe valve may be determined by the following 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 = The required stem thrust, in pounds-force.

dp The differential pressure across the valve.

The. seat area of the valve, which is 2.76 square inches based on contact seat diameter (Section 3.1) .

An empirical valve factor, which is 1.1 per reference 2.1.

SBL The stuffing box load, or packing drag, expressed in pounds-force. This is 1500 pounds per reference 2.1.

SA The area of the stem, in square inches. For the stem diameter given in section 3.1, this area is 0.99 square inches.

The inlet system pressure.

1CS-746 Page Not 8

Prepared By: Calo. ID! *CS-0021 Checked By: Revisions 2 4~3~1 v h Re red t imum dP ont.

From the information given above, the closing thrust may be calculated.

CLOSING THRUST (2 i 707*2 ~ 76*1 1) + 1 i 500 + [0 ~ 99*(2 i 707 2 i 707]

8,218 + 1,500 + 0

= 9,718 pounds The value of 9,718 pounds includes a conservatism of approximately 104 due to the assumed valve factor of 1.1, and an additional conservatism of approximately 500 to 1,000 pounds due to the assumed packing load of 1,500 pounds (see attachment D).

In addition, normal CP&L practice is to multiply the calculated closing thrust by 1.15 in order to account for possible VOTES measurement errors and torque switch repeatability. Thus, the theoretical calculated closing thrust is 11,176 pounds.

NOTE: Liberty Technologies issued a 10CFR21 notification on 10/2/92 which documents potential thrust measurement inaccuracies due to torsional effects on small stems.

A review of the design of 1CS-746 has confirmed that the anti-rotation device is located in the yoke flange, above that portion of the stem where the VOTES calibrator was installed. Thus, the subject 10CFR21 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 and respectively.

actuator, which are 14,432 and 14,000 pounds, However, there is a concern that inertial effects may cause the final thrust to exceed the continuous ratings ofdata the actuator and for 1CS-752 valve. A review of differential pressure test (a'ister valve), which was tested at approximately 2,730 psid, indicates that thrust at torque switch trip was 11,131 pounds (attachment F). Final seating thrust due to inertia was 13,432 pounds (attachment E), which represents a thrust increase of 214.

Since the assumed VOTES measurement error is +104, the actual final thrust may exceed the continuous thrust ratings of the actuator and valve. Thus, it is desireable, if possible, to adjust the torque switch to trip at a lower value of thrust.

1CS 746 Pago Moi 9

Prepared By! Calc. ID! *CS-0021 Checked By< Revisions 2 4~3~1 ve axi um d can Test data for 1CS-752 indicates that flow isolation was achieved at 7,804 pounds (attachment C) of thrust at an indicated test dP of 2730 psid. This test was performed with a spool piece installed in lieu of the relief valve. The'roposed configuration of multiple orifices installed upstream of the MOVs will reduce upstream pressure at the valve, thereby making the results of this previous test conservative. The average closing packing load during the RF03 test of 1CS-752 was 456 pounds (attachment D). This packing load is included in the 7,804 pounds of thrust at flow isolation; therefore, the thrust required to overcome differential pressure is equal to 7,348 pounds. In order to allow for variations in packing, a packing load of 1500 pounds will be assumed.

From the information given above, the expected closing thrust may be calculated.

CLOSING THRUST = 7,348 + 1,500 + [0.99*(2,707-2,707]

7i 348 + 1i 500 + 0

= 8,848 pounds A differential pressure and line pressure of zero is assumed to provide for the most conservative opening thrust.

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

1,500 - 0 0

= 1,500 pounds 4~3 ' a t The minimum allowable closing/opening thrust at torque switch trip shall be 1.15 times the calculated required thrust when actuator torque is 50 ) foot-pounds and 1.20 when actuator torque is ( 50 foot-pounds, in order to account for possible measurement errors and torque switch repeatability. Thus, MINIMUM CLOSING DIAGNOSTIC THRUST ~ REQUIRED THRUST

• 1.15 8,848

• 1.15 10,175 pounds 1CS-746 Page Mo: 10

prepared BY- Calo. ID: *CS-0021 Chooked Byt Revision: 2 4 ' ' owed Dia T st o nue MINIMUM OPENING DIAGNOSTIC THRUST = REQUIRED THRUST

• 1.20 1,500

• 1.20 1,800 pounds 4.4 commended nimum Tor e w tch Settin The input torque (actuator torque) required to produce the thrust values calculated in section 4.3, may be calculated using the following equation (reference 2.1).

ACTUATOR TORQUE = THRUST

• STEM FACTOR Based on the stem factors given in section 3.3, Assumption 3, the actuator torque for the normal opening and closing conditions may be 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 o 0 m 8 The available motor torque at degraded-voltage conditions limits the available actuator torque. If a torque switch is set above the minimum available torque, there is a possibility of stalling the motor before the torque switch can actuate. In order to prevent this situation, the maximum torque switch setting value shall not exceed the minimum available torque provided by the motor at degraded-voltage conditions.

1CS-746 Pago No: 11

Prepared Bps Calo. ZD! *CS-0021 Checked BY Revisi.on! 2 4~5~1 ato o ted According to reference 2.1, the closing actuator torque that will be developed by the minimum available motor torque (reference 2.3) is calculated as follows.

ACTUATOR TORQUE = MOTOR TORQUE

• UNIT RATIO

• RUNNING EFF.

• 0.9 5.9

• 82.0

• 0.50

• 0.9 218 foot-pounds 4 ' ' e A ator or e ited Mo a According to reference 2.1, the opening actuator torque that will be developed by the minimum available motor torque (reference 2.3) is calculated by:

ACTUATOR TORQUE = MOTOR TORQUE

• UNIT RATIO

• PULLOUT EFF.

• APPLICATION FACTOR 5.9

• 82.0

• 0 '

• 0' 174 foot-pounds 4 '

4~6~1 st and o e The allowable thrust limits of the actuator and valve are shown below. The limiting components in the opening and closing directions define the maximum allowable continuous thrust setting.

COMPONENT LIMIT POUNDS SOURCE ACTUATOR *12 600 REF. 2 ~ 1 VALVE CLOSING **12 989 Attachment B VALVE OPENING **12 989 Attachment B

• This limit is 904 of the Limitorque qualified continuous rating.

• • These limits represent 904 of the Velan continuous duty ratings as provided in attachment B.

1CS-746 Pago los 12

Prepared By! Calc. ZD! *CS-0021 Checked By> Revision: 2 4 ' 1 s and o imit Co ti ued Tor e imits The allowable torque limits of the actuator and valve are shown below. The limiting component defines the maximum allowable continuous torque setting.

COMPONENT LIMIT FOOT-POUNDS SOURCE MOTOR CLOSING 218 SECTION 4.4 MOTOR OPENING 174 SECTION 4.4 ACTUATOR *225 REF 2 '

SPRINGSET PACK 250 REF. 2.11

• This limit is 904 of the Limitorque qualified continuous rating.

4 ' ' e 0 s From reference 2.1, the wormshaft torque that must be applied to achieve a required output torque may be calculated by:

WORMSHAFT TORQUE I

• 0 0 UE WS RATIO WS EFFICIENCY 4.6.2.1 Clos n orms aft o The equivalent wormshaft torque is provided for the purpose of verifying the closed torque switch setting with a torque wrench.

MINIMUM WORMSHAFT TORQUE 45

• 0 36 11 '3 FOOT-POUNDS 135 INCH-POUNDS MAXIMUM WORMSHAFT TORQUE 45

• 0 36 13 '6 FOOT-POUNDS 162 INCH-POUNDS 1CS 746 Page Mo! 13

Prepared By< Calo. ID: *CS-0021 Cheoked By! Revision! 2 4 ' ' ' s aft or o For this valve the recommended minimum opening torque setting is 32 foot-pounds, and the maximum allowable open torque setting is 174 foot-pounds. However, it is not practical to. set the opening torque switch with a torque wrench because this would cause the stem to be forced against the backseat. Therefore, the open torque switch shall be ad)usted to a setting of "1" (Reference 2.11) .

4~7 According to electrical analysis (reference 2.3) performed for this valve, the maximum available motor torque at the most favorable conditions is 11.3 foot-pounds.

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

ACTUATOR STALL TORQUE MAXIMUM MOTOR TORQUE

• UNIT RATIO

• STALL EFFICIENCY 11 '

• 82.0 * .50 = 463 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 is used for conservatism (see section 3.3).

STEM FACTOR

~6 0.0156 29,679 POUNDS The one-time limits of the valve and actuator are as follows:

COMPONENT LIMIT SOURCE ACTUATOR TORQUE 500 FOOT-POUNDS REF. 2 ~ 1 ACTUATOR THRUST 35 000 POUNDS REF. 2 ~ 1 VALVE CLOSING 35 616 POUNDS ATTACHMENT B VALVE OPENING 35 616 POUNDS ATTACHMENT B 1CS-746 Pago No! 14

proparod By! Calc. XDc *CS-0021 Checked By! Rovisioni 3 4.7 Stal aluation Continued The calculated stall forces for this Motor Operated Valve (MOV) indicate that the potential does not exist for damage to the actuator and valve power train and load-bearing components.

4.8 e Sw tc S As shown in reference 2.4, the actuator is equipped with a four train limit switch assembly, arranged in the following manner:

4.8.1 Bases of m t Switch Set o t e e e ts otor 1 Rotor 41 acts as the open limit switch, in order to stop the motor after the valve has traveled to the full open position. It provides position indication lamps when the valve is full open).

(it turns off the green indicator The practice at SHNPP has been to set the open limit switches to actuate when the disc is at 964 of full open position unless otherwise specified on the control wiring diagram (reference 2.5). Operating experience has shown that this setting provides for proper flow rate, however, RP03 testing of a sister valve identified that the valve stem was coasting into the backseat.

Thus, a setpoint of 964 may not be adequate and therefore, a setpoint of 904 is recommended (see Attachment A for justification).

motor~

When the valve is given a signal to close, the motor runs in the closing direction until the torque switch is actuated, which stops the motor.

Rotor g2 is wired to provide a bypass around the close torque switch until the valve is at the 44 position. In addition, rotor

$ 2 provides valve position indication (it turns off the red indicator lamps when the valve is fully closed).

1CS 746 Pago Ho! 15

Prepared W! Calo. ZDt *CS-0021 Chewed By< Rovisi.on< 2 8~1 m t Sw tc t o nt e i e t In order to assure proper position indication in the close direction, the close limit switch should be ad)usted to indicate a closed condition only after the disc has covered the valve seat. The practice at SHNPP has been to set the close limit switches to actuate when the disc is at the 44 position unless otherwise specified on the control wiring diagram (reference 2.5). Operating experience indicates that 44 from fully closed is adequate to meet the setpoint requirements for rotor $ 2.

Thus, 44 is an acceptable setting, and can be retained.

R&simM Rotor 43 is not used..

Rotor 44 provides position indication to the main termination board.

to open It also provides a permissive which allows valve 1RH-25 provided valve 1CS-746 is closed and other conditions are met.

order to assure proper position indication in the close direction, the close limit switch should be adjusted to indicate a closed condition only after the disc has covered the valve seat. The practice at SHNPP has been to set the close limit switches to actuate when the disc is at the 44 position unless otherwise specified on the control wiring diagram (reference 2.5). Operating experience indicates that 44 from fully closed is adequate to meet the setpoint requirements for rotor $ 4.

Thus, 44 is an acceptable setting, and can be retained.

4' ' w to S tt ts tin s In this case, the various limit switch rotors are required to be set as follows:

ROTOR 41: 904 of full open ROTOR g2: 44 of full open I

ROTOR g3: NA ROTOR g4: 44 of full open 1CS 746 Page Mo: 16

Prepared Bys Calc. ZDs *CS-0021 Checked By! Revisions 2 4~8~2 Settin reme ts Co u The preferred method for setting limit switches is to determine the number, of.handwheel turns needed for a full stroke, and then to set the switches at, the required percentages based upon that.

The total number of handwheel turns needed to stroke the valve may be handwheel determined ifall ratio are the stroke known.

length, thread lead, and The total handwheel(HW) turns to fully stroke the valve is calculated as follows:

TURNS~ = VALVE STROKE / THREAD 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.

4.9 o al 0 t o a o s ov o o o s ctua m v t With the information provided in section 3.1, the stem nut revolutions per valve stroke and the stem nut revolutions per minute can be determined as followss

/ LEAD 0

= ~50.667 2 '5 STEM NUT REVOLUTIONS/MINUTE 0 0 OVERALL UNIT RATIO 82.0 20.73 1CS-746 Page Mos 17

Prepared Bys Cale. ZDs PCS-0021 Checked Bys Revisions 2 4.9 o ie C nued With these calculated values the nominal expected operating time of this valve can be calculated using the following equation:

STROKE TIME = V STEM NUT REVOLUTIONS/MINUTE 5

20.73 0.11 MINUTES/VALVE STROKE 6.5 SECONDS/VALVE STROKE This valve has no specific stroke time requirements other than the generic 10 second maximum stroke time required by reference 2 '3.

1CS 746 Page los 18

Prepared By: Calc. ID'CS-0021 Checked Bp Revi.siont 2 5' RESU S CO U 0 NDATIONS 5.1 Results and Concl sions

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

CLOSING THRUST RANGE (POUNDS) OPENING THRUST RANGE (POUNDS)

MINIMUM MAXIMUM MINIMUM MAXIMUM 10 175 12 600 1 800 12 600 RECOMMENDED RECOMMENDED CLOSE TORQUE SWITCH SETTINGS OPEN TORQUE SWITCH SETTINGS MINIMUM MAXIMUM MINIMUM MAXIMUM 182 FT-LBS 2 18 FT-LBS 32 FT-LBS 174 FT-LBS EQUIVALENT EQUIVALENT CLOSE WORMSHAFT TORQUE OPEN TORQUE SWITCH DIAL SETTING MINIMUM MAXIMUM MINIMUM MAXIMUM 135 IN-LBS 162 IN-LBS LIMIT SWITCH SETTINGS ROTOR ¹1 ROTOR ¹2 ROTOR ¹3 ROTOR ¹4 904 N/A 1 HW TURN 3/8 HW TURN 3/8 HW TURN FROM FULL FROM FULL FROM FULL OPEN CLOSED CLOSED 5~2 o e It is recommended that this valve be achievable differential pressure and retested at maximum flow upon completion of PCR-6547. The test results will be evaluated to confirm the setup ranges established in this calculation are acceptable.

1CS-746 Page Mo: 19

Attachment A Calc. No. 'CS4021 Revision 2 Valve No. 1CS-746 Page 1 of 1 BETWEEN:

MECHANICAL ENGINEER CAROLINA POWER % LIGHT AND~ - MR, MANAGER OF ENGINEERING VELAN INC.

DATE: JANUARY 6, 1992 TIME: 2~35PM

SUBJECT:

2" AND SMALLER VELAN GLOBE VALVES MR. STATED THAT 90t OF FULL OPEN STROKE WOULD ALLOW FULL DESIGN FLOW.

Attachment B Calc. No. 'CS-0021 Revision 2 Valve No. 1CS-746 Page 1 of 3 Number of pages V(A FAX including this page: Q Please reply by FAX to: Message No.: To:

Q Head Offfce and Plant No, 1 (514) 748-8635 Oatei I .5 Q Marketing (514) 748-7592 From:

Q Plant No. 2 (514) 341-3032 Attention; Q Spare Parts (514) 342-2311 Q Plant No. 3 (802) 862M14 Copies to:

Cl Plant No. 4 (514) 378%865 Subject/

Reference:

~uM

Attachment B GLOBE VALVE 2 in Calc. No. 'CS4021 Revision 2 STEM ANALYSZS Valve No. 1CS-746 Page 2 of 3 UTZLZTY: CAROLZNA POWER AND LZQHT Order no. P9-W.X.D.g:

VALVE DWG: E73-62S Design Temp. 125 deg F

~ STEM DWG. 7913-22 Pressure Class 1500 lb STEM THRD. 1 1/8 - 3 ACME douhle lead STEM MAT. SS 630 A 564 Sa ~ 45950 Psi Code Case N-62-4 STEM DATA dl 0.792 in. root dia of thread d2 0. 917 dim. at sec. d2 0.425 in. dim. at sec. k 0.396 in. rad. d/2 0.016 ft.lb./lb thread. factor al 0.492 in. 2 root area of thread 0.660 in. 2 area oi sec. d2 a3 1.224 in. 2 area at 42 in shear 0.039 in. polarat'cam oi iner-4 tia moment thread 0 in. off- 1cngth of stem 0 in. torque arm radius 0.019 in. 4 Moment of Znertia Ki2 'd TTE2 2& PTS 2d Sled 389dS NU~ 91:ST 26'G lDO

I Attachment B Calc. No. 'CS-0021 Revision 2 GLOBE VALVE aaa~~aaa -

2 in

~aaaa Valve No. 1CS-746 Page 3 of 3 STEM ANALYSIS

&&W W 'W MM m MM W W es UTILITY: CAROLINA POWER AND LIGHT Order no. P9-W. I Do o 2TM78FNM VALVE DWG: E73-62S Design Temp. 125 deg F STEM DWG 7913 22 Pressure Class 1500 lb STEM THRD. 1 1/8 - 3 ACME double lead STEM MATo SS 630 A-564 Sy ~ 11339'6 Psi Code Case N-62-4 STEM CALCULATION At Section dl Max Tr 14432 lbs. from Eq. (19)

At Section d2 Max Tr 30347 lbs. from Eq. (20)

At Section k Max Tr 33756 lbs. from Eq. (21)

MAX Thrust/Torque CLOSING OPENING Tr./lbs. Tor./lb-ft Tr./lbs. Tor./lb-xt CONTINUOUS DUTY 14432 224 14432 224 ONE TIME 35616 554 35616 554 KiB'd TYKE Zt K 0TS 2d Sled 3HUdS NU Uh t0:ST 26r 88 lDO

ATTACHMENTC

'CS4021, Rev. 2 Page 1 of 1 Test: 4 Tag'S-752 3ZV9i 22'49'ii

.5000 VBZR SISOR

-10000 orce = -7884

( IbS) @000

.20000 52997 53$ 97 P$ 97 SS$ 97 SC$ 9> 0$ 97

%ITCH B SIITCH C S2$ 91 53$ 91 P$ 97 SS$ 9) SC$ 97 5)$ 97 Tias in Seconds S5,397 Y-EÃPS ON 1CS-752: Flow Isolation/Seating Thrust 2730 PSID

ATI'ACHMENTD

'CS4021, Rev. 2 Page 1 of 1 Test: i Tag: i(Z-752 3CKIi 2'25'5

.%$ 0 VRZS SENSOR

-%60 once = -456 (1hS) -uo

-%40 2$ 209 25309 2$ %09 2$ $ 09 2$ 609 2$ 709 2S209 2$ 309 2$ %09 2$ $ 09 2$ 609 2009 Ties in Seconds K%53 1CS-752: Average Closing Packing Load, Static Conditions

ATI'ACHMENTE

'CS4021, Rev2 Page 1 of 1 Test: 4 Tag: iCS-752 3)23/91 22'49'ii IJES IOR once = -13432

<<2$ 000

( Ib )

<<20000

$ 530% 55%0% $ $ $ 0% 5$ % $ 570%

SIITCH A

%ITCH B

%ITCH C

$ 530% S$ %0% $ $ $ 0% SS)0% $ $ 00%

TiIM; in Seconds 55.688 1CS-752, Final TIImst Due to Inertia

4 W f'N 1

I Pl apr ',, lg ~i

)1'>> 'v 4I tl

ATTACHMENTF

'CS4021, Rev.2 Page 1 of 1 Test' Tag'CS-752 3/23/31 V.'6'ii

.10000 V jrI'ES SENOR orce = -iii3i15000

)

-20000 5530't 55908 SSO't 5560% SPO'k 55405 IITCH A SMITCH B SMITCH C 5530'f 55t0% 550% 5560% 5510% 5500%

Til. ia Secanh 55.<88 1CS-752, Thrust At Torque Switch Trip

."af V

f kv

Attachment G Calc. No. 'CS4021 DISCIPLINE DESIGN VERIPICATION RECORD Revision 3 Valve No. 1CS-746

l. instnatiaa to Verification Persanel Page 1 of 2 Plant Pro ject g Q (Class A)

Q [ ] Seismic (Class 8)

File Ko. Level [ ] FP-Q (Class 0)

Oocunent Ko. Rev [ ] Other Oesign verification should be done in accordance vith AKSl KI5.2.11, Section 6, as emended by Regulatory Guide 1 64, Rev. 2.

~

Special instructions:

Oiscipline Project Engineer l l. Veri ficatim Ooca~tation Applicability i ci line Oisci line Hechani ca 1 Civil Structural []

HVAC [] Seismic Equip. Qual. []

Electrical [] Civil Stress [)

le [) Fire Protection []

Enviroreantal Qualification []

Huian Factors []

Katerials

[)

Other []

Verification Hethods Used:

gl Oesign RevieM [ ) Alternate Calculations [ ] Qualification Testing Oesign Oocuaent Acc¹atablet~es i)4 Ko [ ) - caments attached.

Oesign Verifier Oate )+ 14 Acknowledgement of Veri f icationt (OPE) Date ill. Rcaaluticn ef C~tst Ccamnts Resolved (See Attached) t (RE) gate Action taken makes Oesign Oocuaents Acceptable:

Oesign Verifier Oate (OPE) gate KEO Procedure 3.3/Rev. 5o

Il

'I Mt I

1W WtV " V+ h 0

Attachment G Calc. No. 'CS4021 Revision 3 Valve No. 1CS-746 D ISCIPLIIIE DESI Ql VER IFTCATIQI RECND Page 2 of 2 CCNNEIIT SHEET Plant Project File Ho.

Document Mo. +~-OO2i Rev This sheet is only required Ken ccaments ere being made.

C ament Resolved Ho. Ccament Resolution Initial/Date NEO Procedure 3.3/Rev. 50

0

'I