ML18010A856

Rev 3 to CS-0022, Mechanical Analysis & Calculations for 1CS-752 Charging Pump C to Refueling Water Storage Tank Isolation Valve. Calculation Applicable to GL 89-10

ML18010A856
Person / Time
Site:	Harris
Issue date:	10/08/1992
From:	CAROLINA POWER & LIGHT CO.
To:
Shared Package
ML18010A852	List: ML18010A851 ML18010A853 ML18010A854 ML18010A855 ML18010A856 ML18010A864 ML18010A865 ML18022A904 ML18022A905 ML18022A906 ML18022A907
References
CS-0022, CS-0022-R03, CS-22, CS-22-R3, GL-89-10, NUDOCS 9210280225
Download: ML18010A856 (45)

Text

q21.028022 05000g00 PDR ADOCl pDR P

Carolina Power & Light Company PO 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 Tank Isolation Valve t:I IBEtitIIIIIPLt Generic Letter 89-10 Applicable:~Yes No Valve Classification: Nuclear-Safety Related Calculation Number *CS-0022 Revision Prepared By/Date Veri f fed By/Date Project Engineer/Date Prin. or Res. Eng./Date Signatures on f(le Signatures on file 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

Prepared By< Calo. ZDc *CS-0022 Checked Byc Revisions 3 ct ve es

~a Raximim 1 3 2 2 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 3 17 2 18 2 19 2 Attachment A Telecon w/Velan Inc.

Attachment B Fax from of Velan Attachment C . Flow Isolation/Seating Thrust Attachment D Average Closing Packing Load Attachment E Final Thrust Due to Inertia Attachment F Thrust at Torque Switch Trip Attachment G Design Verification Record 1CS-752 Pago No: 1

Prepared Byt Calo. ID! *CS-0022 Cheeked By> Revisioni 2 BNTS

~seatio esori t 1.0 Purpose 2 ' References 3' Bases and Assumptions 3 1 Analyzed Configuration 3 ' Valve Function and Control Configuration 3 ' Assumptions 4 ' Calculations 4.1 Generic Letter 89-10 Applicability 7 4.2 Design Differential Pressure Evaluation 7 4.3 Valve Thrust 4 ' Recommended Minimum Torque Switch Setting ll 4.5 Motor Capacity Limits 4 ' Allowable Operating Ranges 4.7 Stall Evaluation 14 4.8 Required Limit Switch Settings 15 4.9 Nominal Operating Time 17 5.0 Attachment A Attachment B Attachment C Attachment D Attachment E Attachment F Fax from .'f Results, Conclusions and Recommendations Telecon w/Velan Inc.

Velan Flow Isolation/Seating Thrust Average Closing Packing Load Final Thrust Due to Inertia Thrust at Torque Switch Trip Verification 1 page 3

1 1

page page 1 page 1 page 19 pages Attachment G Design Record 2 pages 1CS-752 Page No: 2

Prepared By> Calc. IDt *C8>>0022 Checked By! Revision> 3 1~0 SPUR O~g 1 1 o e o h e 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 Re so o e sio 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.

II 2.1 NED Design Guide DG-I.11, "Q-List Motor-Operated Valve Mechanical Evaluations", Revision 4.

2~2 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-053, Revision 2.

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

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

2.6 Valve Vendor Print 1364-53850, Revision 1.

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

1CS-752 Page No: 3

Prepared By! Calc. ZD! *CS-0022 Checked By! Revisiont 2 2 ' E ued 2.8 Chemical & Volume Control Piping, Reactor Auxiliary Building, Plans, CAR-2165-G-140, Revision 23.

2.9 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. 12 Piping Line List, CAR-1364-B-0070, Revision 44.

2. 13 Westinghouse E-Spec. No. G-678852, Revision 2.

2. 14 Design Basis Document DBD-104, Revision 0.

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

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

2. 17 Limitorque Order Sheet 377628-G

2. 18 PCR-6547, Revision 1, "Alternate Mini-Flow Re-Design<<

3 ' BAS S ASS ZONS 3.1 al se o ra io The configuration assumed when performing this analysis is as follows:

Limitorque Order Number: 377628-G Actuator Size & Type: SMB-00 Overall Unit Ratio: 94.0:1 Handwheel Ratio: 4 ~ 3P:1 Handwheel Efficiency: '5%

Worm Set/Gear Ratio: 45:p Worm Set Efficiency: 36%

Applications Factor: 0.9 Installed Spring Pack: 60-600-0022-1 Pullout Efficiency: 40%

Run Efficiency: 50%

Stall Efficiency: 50%

1CS-752 Page No: 4

Prepared By) Calc. IDs *CS<<0022 Chec)red By< Revision! 2 3~1 tio Co 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-1/3P-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- e erence The Ebasco (construction identification) tag number for this valve is 2CS-V759SB-1.

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

3.2 Va ve nct on and Contra Conii ratio 3.F 1 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-flaw lines which relieve to the RWST.

1CS-752 Page No: 5

Proparod By! Calo. ZDt ~CS-0022 Checked By< Revisions 2 3.2.2 . t o o The following statements are derived from references 2.4, 2.5 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 NOV can only open if 1RH-63 and either 1CS-165, 1CS-166 or 1CS-753 are closed.

valves 1RH-25, This HOV 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 injection 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 11.2 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 design temperature for line number 2CS2-786SN-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-752 Pago No: 6

Prepared By! Calo. ZDs *CS-0022 Chooked By< Revt.sions 2 4.0 F 1 Valve 1CS-752 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 CSIP's during safety in)ection (specifically the injection phase of the SIS 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.

2 2~1 s e nlet Pre su 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.

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/f t si Upstream Pressure is equal to: 2,707 psig 4 ' ' D t essu e 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 752 Page Not 7

Prepared By> Calo. ZDt 4CS-0022 Checked Bys Revision! 2 4.2.2 fo 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 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.

4~3~1 1 s e d The maximum thrust requirements for the operation of this prossuro under the seat globo 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-752 Page No< 8

Prepared By! Calo. IDc *CB-0022 Checked By! Revisions 2 4.3. 1 V ve h e red t mum dP cont.

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

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 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 errors and torque switch repeatability. Thus, theVOTES'easurement 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-752 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 actuator, which are 14,432 and 14,000 pounds, respectively.

However, there is a concern that inertial effects may cause the final thrust to exceed the continuous ratings of the actuator and valve. A review of'ifferential pressure test data for 1CS-752, 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 2104, the actual final thrust may exceed the continuous thrust ratings of the actuator and valve.

Thus, it is desirable, if possible, to adjust the torque switch to trip at a lower value of thrust.

1CB-752 Page No: 9

Prepared By< Calc- XD! *CS-0022 Checked By< Revisions 2 4~3~1 v h st Re at Mmrimum dP cont.

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 proposed 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 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 future packing adjustments, 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 '9*(2,707-2,707]

7,348 + 1,500 + 0

= 8,848 pounds A differential pressure and line pressure of zero is assumed to provide for the most conservative opening thrust. From the information 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 rust 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 XCS-752 Page Hot 10

Propared By< Calo. ID! *CS-0022 Chocmked Byc Revt.siont 2 4 ' ' t n 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 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 or Ca ts 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 752 Page No: 11

i 4 Prepared By! Calc. ID) *CS-0022 Checked Byc Revisions 2 4~5~1 or ea mt Mo o 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.

• UNIT RATIO

• RUNNING EFF.

• 0.9 4

ACTUATOR TORQUE = MOTOR TORQUE 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 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

• 94.0

• 0.4

• 0.9 200 foot-pounds 4 '

4~6~1 st a d Tor e imits stLmt 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 90% of the Velan continuous duty ratings as provided in attachment B.

1CS-752 Page Not 12

Prepared Bys Calo, ZDt *CB-0022 Chookod Byc Revisionc 2 4~6~1 h s an Tor e im ts Co t ued or 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 250 SECTION 4.5 OPENING 'OTOR 200 SECTION 4.5 ACTUATOR *225 REF. 2. 1 SPRINGSET PACK 250 REF. 2.11

• This limit is 90% of the Limitorque qualified continuous rating.

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

WORMSHAFT TORQUE = UIR U U WS RATIO

• WS EFFICIENCY 4.6.2.1 Clos o shaft To e The equivalent wormshaft torque is provided for the purpose of verifying the closed torque switch setting with a torque wrench.

MINIMUM WORMSHAFT TORQUE 11.23 FOOT-POUNDS 45

• 0 '6 135 INCH-POUNDS MAXIMUM WORMSHAFT TORQUE 13.89 FOOT-POUNDS 45

• 0 36 167 INCH-POUNDS 1CB-752 Page Mo! 13

Prepared By< Calc. ID! *CS-0022 Checked By! Rovt.sionc 2 4.6.2.2 e o 0 For this valve the recommended minimum opening torque setting is foot-pounds, and the maximum allowable open torque setting is 32 200 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 adjusted to a setting of "1" to "2" (Reference 2.11).

4 ' t t luat on According to electrical analysis (reference 2.3) performed for this valve, the maximum available motor torque at the most favorable conditions is 11.2 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 11.2

• 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 is used for conservatism (see section 3.3).

STEM FACTOR 33, 718 POUNDS 0 '156 The one-time limits of the valve and actuator are as follows:

COMPONENT LIMIT SOURCE ACTUATOR TORQUE 500 FOOT-POUNDS REF F 1 ACTUATOR THRUST 35 000 POUNDS REF. 2. 1 VALVE CLOSING 35 616 POUNDS ATTACHMENT B VALVE OPENING 35 616 POUNDS ATTACHMENT B 1CS-752 Page Not 14

Prepared Bys Calo 'Ds +CS-0022 Checked Bys Revisions 3 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 actuator if a stall should occur.

This does not indicate that an operability concern exist. A stall condition is not a normal modefailure.of operation for a MOV, and is the result of a prior equipment A stall condition is created by the failure of a limit switch or torque switch to stop valve motion when desired. This causes the operator to continue to drive the valve until a mechanical limit/

either the seat or backseat, is reached, at which time the motor is forced to stop or "stall".

occur during an accident, it If this failure is assumed to constitutes the "single active failure", and the stall condition is a continuation of this failure. The stall will not render the MOV inoperable, because the 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 four train limit switch assembly, arranged in the following manner:

4.8.1 Bases of i it Swi a t em t otor 1 Rotor $ 1 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 (it turns off the green indicator lamps when the valve is full open).

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 valve provides for proper flow rate, however, RF03 testing of a sister identified that. the valve stem was coasting intotherefore, the backseat.

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

1CS-752 Page Hos 15

Preparod By! Calo; iDc +CS-0022 Checked By> Revision! 3 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 the closing direction until the torque switch is actuated, which stops the motor.

Rotor 42 is wired to provide a bypass around the clase torque switch until the valve is at the 44 position. In addition, rotor g2 provides valve position indication (it turns off the red indicator lamps when the valve is fully closed).

In order to assure proper position indication in the close direction, the clase 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 clase 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 g2.

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

Rotor $3 is not used.

Rotor i Rotor $4 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.

In order to assure proper position indication in the close direction, the close limit switch should be ad)usted to indicate a closed condition anly 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.

1CS-752 Page No: 16

Prepared Bys Calo. XDs *CS-0022 Checked By! Revisions 2 4 ' ' S h t Limit Switc oto e ti s In this case, the various limit switch rotors are required to be set as follows:

ROTOR N1s 904 of full open ROTOR 42s s44 of full open ROTOR 43s NA ROTOR $ 4s 44 of full open 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 determined if the stroke length, thread lead, and handwheel ratio are all known.

The total handwheel(HW) turns to fully stroke the valve is calculated 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.

1CS-752 Page Nos 17

Prepared Bys Calo. ZD! *CS-0022 Checked Byt Revision! 2 i+9 o 0 0 0 s 0 s va th ie 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 follows:

"/ LEAD

= ~50.667 2.25 STEM NUT REVOLUTIONS/MINUTE OVERALL UNIT RATIO 94 '

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

STROKE TIME = 0 STEM NUT REVOLUTIONS/MINUTE

18. 09

0. 12 MINUTES/VALVE STROKE 7.5 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 752 Pago Not 18

Prepared By! Calc. IDt *CS-0022 Checked By! Revisi.ont 2 5' S AT ONS 5.1 Res 1 s d Co clusio s

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

TABLE SIC T ETUP UIRE S 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 225 FT-LBS 32 FT-LBS 200 FT-LBS EQUIVALENT EQUIVALENT CLOSE WORMSHAFT TORQUE OPEN TORQUE SWITCH DIAL SETTING MINIMUM MAXIMUM MINIMUM MAXIMUM 135 IN-LBS 167 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 eco e a 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-752 Page No: 19

Attachment A Calc. No. 'CSEE%2 Revision 2 TELECOH Valve No. 1CS-752 BETWEEN Page 1 of 1 MECHANICAL ENGINEER CAROLINA POWER & LIGHT AND. MR.

MANAGER OF ENGINEERING VELAN 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 FULL DESIGN FLOW.

Attachment B Calc. No. 'CS4022 Revision 2 Valve No. 1CS-752 Page 1 of 3 YlA FAX hfumber of pages including this page: ~

Pfeeee reply by FAX to: Message hlo.o To:

Q Head Qffice and Plant No. 1 (514) 748%635 Oate;

-

I .5 Q Marketing (514) 748-7592 Q Plant No, 2 (514) 341-3032 Attention:

Q Spare Parts (514) 342-2311 Q Plant No. 3 (802) 862~14 Copies to:

Q Plant No, 4 (514) 378%865 Sub Jeet I

Reference:

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

ds 0'E'.

~+ ...

q

Attachment B GLOBE VALVE - 2 in Calc. No. 'CS4022 Revision 2 i STEM ANALYSIS Valve No. 1CS-752 Page 2 of 3 UTILITY: CAROLINA POWER AND LIGHT Order no. P9-W.I AD.4: 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 MAT. SS 630 A-564 Sa ~ 45950 Psi Code Case N-62-4 STEM DATA d1 0.792 in. root dia of thread d2 0.917 in- dim. at sec. d2 0.425 in. dim. at sec. k 0.396 in. rad. d/2 0.016 ft.lb./lb thread factor 0.492 in."2 root area of thread a2 0.660 in. 2 area of sec. d2 a3 1.224 in."2 area at d2 in shear 0.039 in. 4 of iner-polar moment thread tia af @ram 0 in. eff. length of stem 0 in. torque ann radius 0-019 in."4 Moment of Inertia Er2'd TTE2 2M WTS 2d Sled 3&kB NU13h 90:ST 26'8 lDO

Attachment B Calc. No 'CS-0022 GLOBE VALVE - 2 in Revision 2 Valve No. 1CS-752 Page 3 of 3 STEM ANALYSIS UTILITY: CAROLINA POWER AND LIGHT Order no. P9-W.I AD. 2TM78FNM VALVE DWG: E73-62S Design Tempo 125 deg F STEM DWG: 7913-22 Pressure Class 1500 lb STEM 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 14432 lbs. from Eq. (19)

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

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

MAX Thrust/Torque CLOSING OPENING Tr./lbs. Tor./lb-ft Tr./lbs. Tor./j.b-xt CONTINUOUS DUTY 14432 224 14432 224 ONE TIME 35616 554 35616 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 Tag.'iCS-752 3~9i 22'49'ii 5000 NI'Z8 SZHSDR

-%0000 orce = -tBM

-asooo

.20000 52297 53097 B997 55497 SCO9r P$ 97 SIITQl A SIITC8 II SIIKH C SIlllKII 9 52N7 53S97 S5091 SSO9) SC$ 93 5 7091 Tiae in Seconds K397 1CS-752: Flow Isolatioa/Seating Timist 2730 PSID

ATlACHMENT D

'CS4K2, Rev. 2 Page 1 of 1 Test' Tag'CS-752

%2%i 22'25'45

.%50 VRRR IOR

-%60 once =

(1bS) -%rO

.%80 25209 25309 25%09 25509 25609 25309 OLS 25209 25309 25%09 25509 25309 Time in Seconds K453 1CS-752: Average C1osing PacMng Load, Static Conditions

ATTACHMENTE

'CS-0022, Rev.2 Page 1 of 1 Test: 5 Tag: iCS-752 KNi 22'49'ii VOVIt3 SKOR orce = -i3$ 32 iS000 20000 5530% SS%0i SSSOi 55 5570% 5540%

SMITCH B

%ITCH C SMITCH D SS30i SSIOi SSS0i SSi SPOi SSSOII, Time in Seconds 55,688 Y-Km N 1CS-752, Final 'Adust Due to Inertia

ATTACHMENTF

'CS-0022, Rev2 Page 1 of 1 Tcsti 4 Tag'tm-752 3)23/91 Z2'4S'ii

-10000 VljYES SENSOR orce = -iii3i 15000

.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

Attachment G Calc. No. 'CS-0022 Revision 3 DISCIPLINE DESICN VERIPICATION RECORD Valve No. 1CS-752

l. fnstnmtfma to Verification Persamel Page 1 of 2 Plant ÃI D (Class A)

Project a ] Selsmlc (Class 8)

File No. Level ( ] FP-g (Class 0)

OocuIIent No. " C,5 ~>< eev 2 ( ] Other Design veriffcation should be done in accordance Mich ANSl N45.2.11, Section 6, as acIended by Regulatory guide 1.64, Rev. 2.

Special instructions:

Discipline Project Engineer ll. Veri fication OocLssentatfIn Appt f cabf l ty 1

i ci 1 isci i Hechani cat Civil Structural ()

HVAC () SefsaIic Equip. Dual. (]

Electrical (] Civil Stress (]

le (] Fire Protection (]

Environacntal Dualification (]

Hwen factors (]

Haterials ()

(]

Other ()

Veriffcation Nethods Used:

g] Design RevfeII ( ] Alternate Calculations ( ] guatffication testing Oesfgn Oocunent AccepefIblet Design Verifier Y~ No ( ] - coIments attached.

Date Acksxwtedgeeent of Veri f ication:

(OPE) Date ill. Resotutfm of CossssItst Coanents Resolved (See Attached):

(RE) Date Action taken sakes Design Oocuaents Acceptable:

Design Veri f ier Date (OPE) Date HEO procedure 3 3/Rev.

~

5O

Attachment G Calc. No. <<CS-0022 o 0 I SCIPLIME DES IQI VER IF CCHMEMT SHEET I CAT IQI RECIRD 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 Resolved Mo. Comnent Reso lut i on Initial/Date

,I MED Procedure 3.3/Rev. 50

,i