ML20116H454

Rev 0 to MP2 Target Thrust Calculation for 2-CS-16.1A & B

ML20116H454
Person / Time
Site:	Millstone
Issue date:	07/27/1995
From:	Bandaru P, Higgins P, Hodge S NORTHEAST NUCLEAR ENERGY CO.
To:
Shared Package
ML20116H438	List: ML20116H450 ML20116H454 ML20116H457 ML20116H467 ML20116H482 ML20116H486
References
89-078-873ES, 89-078-873ES-R00, 89-78-873ES, 89-78-873ES-R, NUDOCS 9608120094
Download: ML20116H454 (23)

Text

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NUSCO - b

, CALCULATION CHANGE NOTICE (CCN) g gyg\ '

PACE / ;

1 OF 23 l I'

C'IID CAlfULATION,TLANT O MP3 g MP2 g MP3 O CY ODIER

2. CAlfULATION NO. RE\7510N NO. CHANGE NO. CAlfULAT10N ORIGINATED BY:

89-078-873ES M 002 g Nu O VENDOR

3. CA!fULATION TITLE MP2 TARGET THRUST CALCULATION FOR 2-CS-16.l A AND B

4. REFERENCES 4. Memo MOV-95-010

1. MOV-RTH-95-033 2.MOV 95-391 5. M2-95-00608

3. NP-6660D, Appl Guide for MOVs in .

Nudear Power Plants. l S. REASON FOR CHANGE I TO CALCULATE THE THRUST REQUIRED TO OPEN UNDER PRESSURE LOCKING CONDmONS FOR DIFFERENT SCENARIOS AND COMPARE WIE THE MOV DESIGN CAPABILITY.

2. TO CALCULATE THE CONTACT STRESES TO DETERMINE IF THE VALVE IS LEAK TIGITT.

6. DESCRIPT10N OF CHANGE & TECHNICAL JUSTIFICATION REOUTRED THRUST TO OPEN UNDER PRESSURE LOCKING CONDmONS CN IS APPLICABLE TO BOTH VALVES (2-CS-16.l A/B). HOWEVER, THE ANALYSIS IS PERFORhED FOR 2-CS-16.l A t , SINCE THE MOTOR CAPACITY WHICH IS THE LIMITING COMPONENT IS LESS THAN ITS SISTER VALVE ,

2-CS-16.lB. ALSO THE MEASURED PACKING LOAD IS GREATER FOR 2-CS-16.l A IS GREATER THAN ITS SISTER VALVE.

FOUR CASES HAVE BEEN IDENTIFIED FOR PRESSURE LOCKING. THESE CASES ARE DESCRIBED IN DETAIL IN REFERENCE 1. A

SUMMARY

OF THE PRESSURE CONDmONS AND THE CALCULATED REQUIRED THRUSTS FOR EACH CASE ARE SHOWN ON THE NEXT PAGE.

CASE 1: PRESSURE LOCKING PRIOR TO ACCIDENT CONDITIONS CASE 2: PRESSURE LOCKING CONDITIONS AFTER LARGE BREAK LOCA CASES 3,4: PRESSURE LOCKING CONDmONS AFTER SMALL BREAK LOCA LEAK TIGHTNESS THE ACTUAL CONTACT STRESSES ARE COMPARED TO THOSE REQUIRED TO OBTAIN LEAK TIGHT SEAL. THE ACTUAL CONTACT STRESSES ARE CALCUATED USING THE AS LEFT MEASURED TOTAL THRUST AND THE SEAT AREA OF CONTACT. THE CALCULATED CONTACT STRESS (1370 PSI)IS LESS THAN THE REQUIRED STRESS (4000 PSI, Ref 3) FOR LEAK TIGHTNESS. SEE ATTACHED CALCULATION.

7. NUCLEAR INDIC ATOR g CATI g RWQA 8. ATTECTED CALC PAGES NONE D rPoA O ATWS

9. Fid.f ARLD BL FRIN 1 t.D N AME 51GNARRL DATL ,

P. S. B AND ARU M 7/ 2 7 /'I, if %VD BY: PRINTED NAME c_ _

M Meg /tb DATE SIGNAWkE f P. S. HIGGINS g gggg J[2,7[95 ll. APPROVED BY: PRINTED NAME SIG K10fs r\[\~ 1 pcy DATE S. T. HODGE

[ \ % () s p p_  ;-M-9 5

- 9608120094 960807 V PDR ADOCK 05000336 p PDR

4 CCN 2 to 89-078-873ES Rev 00 Page 2 of 2.]

Recuired-Erust to Ooen to Overcome Pressure Lockinc ne Pressure conditions for the cases listed on the cover page are summarized below. These scenarios are described in more detail in Reference 1.

UPSTREAM BONNET DOWNSTREAM OVERALL DIFF (CTMT SIDE) PRESSURE (RWST SIDE) PRESSURE CASE 1 2 PSIG 37 PSIG 37PSIG 35 PSID CASE 2 15 PSIG 37 PSIG 20 PSIG 39 PSID CASE 3 10 PSIG 37 PSIG 20 PSIG 44 PSID l

CASE 4 10PSIG 20 PSIG 20 PSIG 10 PSID The line pressure in the MOV run is assumed to be lower of either the upstream or downstream pressures for conservatism. The overall differential pressure is the sum of the differential pressures I l

between bonnet to valve upstream and bonnet to valve downstream. The purpose of this DP is to use in the MOV Software to determine the required thrust to open.

DP = (BONNET PR. - UPSTREAM PR) + (BONNET PR. - DOWNSTREAM PR) I i

' His analysis is limited to only the 'A' valve (2-CS-16.1 A) for the following reasons.

1. The motor capability is more limiting than for its sister valve 2-CS-16.1B.

2. The measured packing load is greater than for its sister valve 2-CS-16.lB.

Determination Leak Tichtness l

Maximum Measured As left Total nrust for 2-CS-16.l A = 29225 lbs (Reference 5)

(Total Thrust is greater for CS-16.1 A than CS-16.1B)

Measured Thrust Corrected for Combined Accuracies = 29225 x (1+0.1065) I

= 32337 lbs Seat Ring OD (B2) = 24.021 in (Reference 4)

Seat Ring OD (B3) = 23.387 in (Reference 4) 2 2 Area of Contact = FI/4 x (B2 - B3 )

= 23.606 sq. in Contact Stresses = (32337x 0.5)/23.606

= 684.9 psi ne contact stresses required for leak tightness is 4000 psi from Reference 3. Herefore, the valve is not considered leak tight.

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. CCN 2 to 89-078-873ES Rev 00 P:ge 3 of 23

Conclusion:

' Eszuired Thrust to Overcome Pressure Locking:

The table below summarizes the required thrust to open for pressure locking for each case. The.

estimated required thrust values for all cases are less than the MOV design capability. Therefore, these valves are capable of opening under postulated pressure locking conditions.

REQUIRED THRUST TO OPEN MOV CAPABILITY FOR PRESSURE LOCKING CASE 1 12967 LBS 18025 LBS CASE 2 13868 LBS 18025 LBS CASE 3 15079 LBS 18025 LBS ,,

CASE 4 6977 LBS 18025 LBS ,

I Contact Stresses for Leak Tinhtness:

- The valve will not be leak tight based on a comparison with the contact stresses shown in Reference 3.

Thercfore this supports the assumption that under pressure locking conditions, the bonnet pressure l

would equalize the upstream or downstream pressure over an extended period.

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NORTHEAST UTILITIES _

" INPUTS (c/V 2 /b l

lf CALC. NO.: 89-078-873ES REV O l SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4. 0 DATE: 07/27/95' VALVE NO.: CASE 1 VALVE S/N: E-5278-16-1 ,

OPER. S/N: 152444 l OPER. O/N: 358222E INPUT DESCRIPTION INPUT DATA REFERENCES i VALVE MANUFACTURER ANCHOR DARLING 7.22 VALVE SIZE 24.00 / IN. 7.22 VALVE TYPE GATE- 7.22 ANSI RATING 150 / LB 7.22 VALVE STEM DIAMETER 2.2500[f IN. 7.24 OPER. STEM DIAMETER 2.2500 IN. 7.24 NO. THREADS / INCH 3.0 - ' 24 NO. THREAD STARTS 2- 7.24 ACME THREAD TYPE STANDARD SECTION 3.9 t 25.3750 ' 7.24 STROKE LENGTH / LIFT IN.

STROKE TIME OPEN-CLOSE 43.50- SEC. 7.18 STROKE TIME CLOSE-OPEN 42.50 SEC. 7.19 VALVE SEAT D'IAMETER 23.7040 IN. 7.24 VALVE MATERIAL A351-CF8 7.24 DIFF. PRESSURE 35 / PSI 7.21 LINE PRESSURE -2 / PSI 7.21 SEISMIC LIMIT - THRUST 85000 LB 7.27 MFG. SUGGESTED - THRUST 0 LB  ;

MAX. VLV LIMITS - THRUST 85000 LB 7.27 OPERATOR MANUFACTURER LIMITORQUE 7.22 OPERATOR SIZE SMB-1 7.22 NOMINAL MOTOR SIZE 25.0 FT-LB 7.22 MOTOR RPM 3400 7.22 MOTOR TYPE AC MOTOR MANUFACTURER PEERLESS 7.22 MOTOR SERIAL NUMBER FZ29156WC 7.22 UNIT RATIO 72.42/1 SECTION 2.10 HAND WHEEL RATIO 25.30/1 -' 7.12 SAFETY RELATED YES 7.7 COEFF. OF FRICTION 0.1500 SECTION 3.2 TORQUE SWITCH SETTING 1.000/4.250 ' 7.13 MAX. SPRING PACK TORQUE 980 ,

FT-LB 7.13 MIN. SPRING PACK TORQUE 108 FT-LB 7.13 SPRING PACK NUMBER 60-600-0007 7.22 7

PREPARED BY b DA'TE REVIEWED BY b4- DATE 1b 75 PAGE NO. h DE b a

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r CALCULATED OR TABLE VALUES (CN 2. Yo j CALC. NO.: 89-078-873ES REV O '

I SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4.0 DATE: 07/27/95 VALVE NO.: CASE 1 VALVE S/N: E-5278-16-1 l OPER. S/N: 152444 i OPER. O/M: 358222E DESCRIPTION VALUE VALVE STEM AREA 3.98 IN.**2 VALVE SEAT AREA 441.30/ IN.**2 CALCULATED UNIT RATIO 64.02 AVERAGE STROKE TIME 43.00 SEC.

DESIGN STROKE TIME 48.64 SEC.

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H A N D W H E E L E-F F I C I E N C Y 0.30  ;

HAND WHEEL TORQUE 250.00 FT-LB ,

MAXIMUM STALL RATIO 171.00 STD.OPER. THRUST RATING 45000.00 LB STD.OPER. TORQUE RATING 850.00 FT-LB DYNAMIC RUNNING LOAD 4626.05 LB i

RUNNING EFFICIENCY 0.55 NOTE: Calculated Stroke Time Does Not Account for Degraded Voltage.

l PREPARED BY b DATE

^

REVIEWED BY Pf30 DATE b7ff PAGE NO. $ # 8 b,3

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l NORTHEAST UTILITIES 1

,l CALCULATED VALUES AND OVER-RIDES

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[

CALC. NO.: 89-078-873ES REV 0 SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4.0 DATE: 07/27/95' VALVE NO.: CASE 1 VALVE S/N: E-5278-16-1 OPER. S/N: 152444 OPER. O/N: 358222E I i i l DESCRIPTION VALUE UNITS OVER-RIDE FLAG l VALVE FACTOR. 0.540 ON i

PACKING LOAD 4634.00 LB ON

! PISTON EFFECT -7.95' LB OFF l STEM FACTOR 0.0226 'FT OFF UNIT PULLOUT EFFICIENCY 0.40 - OFF  ;

l i

DESIGN APPLICATION FACTOR 0.90 OFF l l l l . STALL EFFICIENCY 0 . 5 5 ,, OFF STALL FACTOR 1.10 ' OFF f' UNDER VOLTAGE APP. FACTOR 0.75 ON OP RATED THRUST FACT (CST) 1.4000 63000.00 LB ON l

OP RATED TORQUE FACT (CST) 1.0000 850.00 FT-LB OFF THRUST (TT) FACTOR 1.4000 63000.00 LB ON TORQUE (TT) FACT 1.1000 935.00 FT-LB OFF l

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! PREPARED BY 1

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DATE

?h7M b DATE 2!7f7) PAGE NO. b U REVIEWED BY i

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_- . - - - _ . - . - - - - - _ _ ~ _ - _ _ _ . _ - _ - - . _ _ _ - _.

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SUMMARY

OF CALCULATED VALUES CALC. NO.: 89-078-873ES REV O SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4.O DATE: 07/27/95'

, VALVE NO.: CASE 1 VALVE S/N: E-5278-16-1 ,

i OPER. S/N: 152444 1 OPER. O/N: 358222E STEM MOTOR HANDWHEEL LOAD CASES THRUST TORQUE TORQUE TORQUE (LBS) (FT-LB) (FT-LB) (FT-LB)

DESIGN CATEGORY DESIGN EQUATIONS 12967 293 11.2 39 MFG. SUGGESTED THRUST 0 0 0.0 0 l

MAX DESIGN CATEGORY MAX. VALVE MFG. LIMITS

• 85000 1921 73.7 253 SEISMIC LIMIT (THRUST)

• 85000 1921 73.7 253 MAX. OPER RATED CAP. (THRUST)* 63000 1424 54.6 188 MAX. OPER RATED CAP. (TORQUE)* 37611 850 32.6 112 l

l MAX. OPER SPRING PACK CAP.

• 43363 980 37.6 129 .

MIN. OPER SPRING PACK CAP. 4779 108 4.1 14 l l ,

l MAX. OPER MOTOR CAPACITY l, FULL VOLTAGE (100%) 32044 724 25.0 NA l

UNDER VOLTAGE ( 75%)

• 18025 407 14.1 NA l l

MAX. OUTPUT @ MOTOR STALL 48467 1095 27.5 NA

• LIMITED BY MOTOR CAP. UNDER-VOLTAGE 18025' 407 14.1 NA OBSERVATIONS l

THE CALCULATED UNIT RATIO IS WITHIN 20% OF THE MFG UNIT RATIO.

UNIT RATIO INDICATES THAT THIS OPERATOR IS LOCKING TYPE.

THE OPERATOR CAN WITHSTAND STALL TORQUE AND THRUST.

-VALVE CAN WITHSTAND STALL

-DYN. RUN. LOAD IS BELOW 33% OF THE MAX MOTOR CAP. AT 100% VOLTAGE.

_ MOTOR TORQUE ADEQUATE TO OPEN VALVE AT UNDER VOLTAGE CONDITION.

_ MOTOR TORQUE ADEQUATE TO CLOSE VALVE AT UNDER VOLTAGE CONDITION.

NOTES:

! 1. PARALLEL DISC GATE - VALVE FACTOR 0.3 PER ANCHOR DARLING l STRESS REPORT, LOG R91.192, DATED 12-10-91

2. LRA UV PER CALC PAB9-078-0272E2, REV 0

3. RE-EVALUATED FOR LIMITORQUE PART 21 (ACCURACY) 12/26/92 l

l PREPARED BY b DATE 7/17/NS REVIEWED BY DATE D PAGE NO. 7 M 22 a

NORTHEAST UTILITIES -

TARGET THRUST WINDOW l -

(CA/ 2 To l CALC. NO.: 89-078-873ES REV O  !

l SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4.0 I l DATE: 07/27/95 ]

VALVE NO.: CASE 1 VALVE S/N: E-5278-16-1 -

OPER. S/N: 152444 OPER. O/N: 358222E EQUIPMENT ACCURACIES & REPEATABILITY:

1 DIAGNOSTIC ACCURACIES: 9.40  % ,

TORQUE SWITCH REPEATABILITY: 5.00  %

COMBINATION (SRSS): 10.65  %

RATE OF LOADING: 1.10 CALCULATED REQUIRED THRUST (ADJUSTED FOR ACCURACIES AND RATE OF LOADING) :

CALCULATED REQUIRED THRUST: 10258 LBS M,NIMUM I SP CAPACITY: 5883 LBS (AVAILABLE)

MOV HARDWARE CAPABILITY ( ADJUSTED FOR ACCURACIES) :

CST TT l LIMITING SEISMIC STEM THRUST: 76821 76821 LBS

' MAX VALVE LIMIT: 76821 76821 LBS MAX OPERATOR LIMIT: (THRUST) 56938 56938 LBS I MAX OPERATOR LIMIT: (TORQUE) 33992 37391 LBS MAX SPRING PACK CAP.: 39190 LBS MOTOR @ 75% VOLTAGE: 16290 LBS THRUST COMPONENT MAXIMUM TOTAL THRUST / TORQUE: 37391 LBS OPERATOR (TORQUE)

(MAX TT)

MAXIMUM CONTROL SWITCH TRIP: 16290 LBS MOTOR @ 75% VOLTAGE (MAX CST)

MINCST - MAXCST TARGET (CALCULATED) 14661 LBS MARGIN 58.8%

MINIMUM CONTROL SWITCH TRIP: 10258 LBS (MIN CST IN AVAIIABLE THRUST)

NOTES:

o MAX TT includes the thrust imparted by inertia.

o A TT. factor of 1.4000 was applied o The next limiting ccroponent is OPERATOR (TORQUE) and the margin to the Min Req. CST is 231.4 %.

o The suggested target / thrust does not account for inertia.

PREPARED BY 0> DATE 7/27/ff-REVIEWED BY N I, DATE kl1 I PAGI: NO. 7# 22 a

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l INPUTS i

G Al 2 [o =

CALC. NO.: 89-078-873ES REV O SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4.0 D77E: 07/27/95 l

VALVE NO.: CASE 2 VALVE S/N: E-5278-16-1 OPER. S/N: 152444 OPER. O/N; 358222E pt INPUT DESCRIPTION INPUT DATA REFERENCES VALVE MANUFACTURER ANCHOR DARLING 7.22 VALVE SIZE 24.00 IN. 7.22 VALVE TYPE GATE 7.22 ANSI RATING 150 LB 7.22 VALVE STEM DIAMETER 2.2500 IN. 7.24 OPER. STEM DIAMETER 2.2500 IN. 7.24 NO. THREADS / INCH 3.0 7.24 NO. THREAD STARTS 2 7.24 ACME THREAD TYPE STANDARD SECTION 3.9

STROKE LENGTH / LIFT 25.3750 IN. 7.24 STROKE TIME OPEN-CLOSE 43.50 SEC. 7.18 STROKE TIME CLOSE-OPEN 42.50 SEC. 7.19 VALVE SEAT DIAMETER 23.7040 IN. 7.24 VALVE MATERIAL A351-CF8 7.24 DIFF. PRESSURE 39 / PSI 7.21

. LINE PRESSURE -15 / PSI 7.21 SEISMIC LIMIT - THRUST 85000 LB 7.27 MFG. SUGGESTED -

THRUST 0 LB MAX. VLV LIMITS - THRUST 85000 LB 7.27 OPERATOR MANUFACTURER LIMITORQUE 7.22 OPERATOR SIZE SMB-1 7.22 NOMINAL MOTOR SIZE 25.0 FT-LB 7.22 MOTOR RPM 3400 7.22 <

MOTOR TYPE AC l MOTOR MANUFACTURER PEERLESS 7.22 i MOTOR SERIAL NUMBER FZ29156WC 7.22 l UNIT RATIO 72.42/1 SECTION 2.10 i HAND WHEEL RATIO 25.30/1 7.12 SAFETY RELATED YES 7.7 -

l COEFF. OF FRICTION 0.1500 SECTION 3.2 TORQUE SWITCH SETTING 1.000/4.250 7.13 MAX. SPRING PACK TORQUE 980 FT-LB 7.13 l MIN. SPRING PACK TORQUE 108 FT-LB 7.13 i

SPRING PACK NUMBER 60-600-0007 7.22 g I

l L

PARED BY f$b DATE ~7/27[ff REVIEWED BY ES E DATE '9 PAGE NO. 9 #F 2,1 I

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CALCULATED OR TABLE VALUES 3 J i CALC. NO.: 89-078-873ES REV O SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4.0 DATE: . 07/27/95 l VALVE NO.: CASE 2 VALVE S/N: E-5278-16-1  !

OPER. S/N: 152444 i OPER. O/N: 358222E DESCRIPTION. VALUE l VALVE' STEM AREA 3.98 IN.**2 VALVE SEAT AREA 441.30 IN.**2

/

CALCULATED UNIT RATIO 64.02 AVERAGE STROKE TIME 43.00 SEC.

DESIGN STROKE TIME 48.64 SEC.

HAND WHEEL $FFICIENCY 0.30 HAND WHEEL TORQUE 250.00 FT-LB MAXIMUM STALL RATIO 171.00

- STD.OPER. THRUST RATING 45000.00 LB STD.OPER. TORQUE RATING 850.00 FT-LB DYNAMIC RUNNING LOAD 4574.36 LB RUNNING EFFICIENCY 0.55 NOTE: Calculated Stroke Time Does Not Account for Degraded Voltage.

l PREPARED BY D$TE 7/27[9f REVIEWED BY k DATE l' D PAGE NO. /M OP r2]

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i NORTHEAST UTILITIES _  ;

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CALCULATED VALUES AND OVER-RIDES (C N 2. IO i CALC. NO.: 89-078-873ES REV O SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4.0  :

DATE: 07/27/9S  !

VALVE NO.: CASE 2 VALVE S/N: E-5278-16-1 '

l OPER. S/N: 152444 l

OPER. O/N: 358222E l F

l DESCRIPTION VALUE UNITS OVER-RIDE FLAG ,

l VALVE FACTOR 0.540 / ON l

PACKING' LOAD 4634.00 LB OM PISTON EFFECT -59.64 LB OFF l STEM FACTOR 0.0226 FT OFF i

~  !

UNIT PULLOUT EFFICIENCY 0.40 OFF  !

DESIGN APPLI' CATION FACTOR 0.90 OFF l STALL EFFICIENCY 0.55 OFF )

STALL FACTOR 1.10 OFF  !

r UNDER VOLTAGE APP. FACTOR 0.75 ON OP RATED THRUST FACT (CST) 1.4060 63000.00 LB ON OP RATED TORQUE FACT (CST) 1.C000 850.00 FT-LB OFF '

THRUST (TT) FACTOR 1.4000 63000.00 LB ON TORQUE (TT) FACT 1.1000 935.00 FT-LB OFF j PREPARED BY b DATE 7[27/$f REVIEWED BY 75 k DATE 1 11I9$ PAGE NO. // Of 22 e

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l NORTHEAST UTILITIES

SUMMARY

OF CALCULATED VALUES CCN 2. To CALC. NO.: 89-078-873ES REV 0 SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4.0 DATE: 07/27/95 VALVE NO.: CASE 2 VALVE S/N: E-5278-16-1 OPER. S/N: 152444 OPER. O/N: 358222E STEM MOTOR HANDWHEEL LOAD CASES THRUST TORQUE TORQUE TORQUE (LBS) (FT-LB) (PT-LB) (FT-LB)

DESIGN CATEGORY DESIGN EQUATIONS 13868 313 12.0 41 MFG. SUGGESTED THRUST 0 0 0.0 0 MAX DESIGN CATEGORY MAX. VALVE MFG. LIMITS

• 85000 1921 73.7 253 SEISMIC LIMIT (THRUST)

• 85000 1921 73.7 253 MAX. OPER RATED CAP. (THRUST)* 63000 1424 54.6 188 MAX. OPER RATED CAP. (TORQUE)

• 37611 850 32.6 112 MAX. OPER SPRING PACK CAP.

• 43363 980 37.6 129 MIN. OPER SPRING PACK CAP. 4779 108 4.1 14 MAX. OPER MOTOR CAPACITY FULL VOLTAGE (100%) 32044 724 25.0 NA UNDER VOLTAGE ( 75%)

• 18025 407 14.1 NA MAX. OUTPUT @ MOTOR STALL 48467 1095 27.5 MA o LIMITED BY MOTOR CAP. UNDER-VOLTAGE 18025 407 14.1 NA OBSERVATIONS

~THE CALCULATED UNIT RATIO IS WITHIN 20% OF THE MFG UNIT RATIO.

_ UNIT RATIO INDICATES THAT THIS OPERATOR IS LOCKING TYPE. l THE OPERATOR CAN WITHSTAND STALL TORQUE AND THRUST.  ;

i

~_ VALVE CAN WITHSTAND STALL  !

DYN. RUN. LOAD IS BELOW 33% OF THE MAX MOTOR CAP. AT 100% VOLTAGE.

I

~ MOTOR TORQUE ADEQUATE TO OPEN VALVE AT UNDER VOLTAGE CONDITION.

~

_ MOTOR TORQUE ADEQUATE TO CLOSE VALVE AT UNDER VOLTAGE CONDITION.

NOTES:

1. PARALLEL DISC GATE - VALVE FACTOR 0.3 PER ANCHOR DARLING STRESS REPORT, LOG R91.192, DATED 12-10-91

2. LRA UV PER CALC PA89-078-0272E2, REV 0

3. RE-EVALUATED FOR LIMITORQUE PART 21 (ACCURACY) 12/26/92 i

l PREPARED BY DATE 7/I7[ff I REVIEWED BY b DATE 1I') PAGE NO. /2 O F 3.3

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NORTHEAST UTILITIES -

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TARGET THRUST WINDOW CCH 2 TO CALC. NO.: 89-078-873ES REV 0 SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4.0 DATE: 07/27/95' VALVE NO.: CASE 2 VALVE S/N: E-5278-16-1 OPER. S/N: 152444 OPER. O/N: 358222E ,

EQUIPMENT ACCURACIES & REPEATABILITY:  !

DIAGNOSTIC ACCURACIES: 9.40  %

TORQUE SWITCH REPEATABILITY: 5.00  %

COMBINATION (SRSS) : 10.65  % 1 RATE OF LOADING: 1.10 CALCULATED REQUIRED THRUST (ADJUSTED FOR ACCURACIES AND RATE OF LOADING) :

CALCULATED REQUIRED THRUST: 11368 LBS MINIMUM SP CAPACITY:

5883 LBS (AVAILABLE)

MOV HARDWARE CAPABILITY (ADJUSTED FOR ACCURACIES):

CST TT LIMITING SEISMIC STEM THRUST: 76821 76821 LBS MAX VALVE LIMIT: 76821 76821 LBS MAX OPERATOR LIMIT: (THRUST) 56938 56938 LBS j MAX OPERATOR LIMIT: (TORQUE) 33992 37391 LBS l MAX SPRING PACK CAP.: 39190 LBS  :

MOTOR @ 75% VOLTAGE: 16290 LBS THRUST COMPONENT I MAXIMUM TOTAL THRUST / TORQUE: 37391 LBS OPERATOR (TORQUE)

(MAX TT)

MAXIMUM CONTROL SWITCH TRIP: 16290 LBS MOTOR @ 75% VOLTAGE (MAX CST)

MINCST - MAXCST TARGET (CALCULATED) 14661 LBS MARGIN 43.3%

MINIMUM CONTROL SWITCH TRIP: 11368 LBS (MIN CST IN AVAILABLE THPUST)

NOTES:

o MAX Tr includes the thrust imparted by inertia.

o A TT factor of 1.4000 was applied o The next limiting component is OPERATOR (TORQUE) and the margin to the Min Req. CST is 199.0 %.

o The suggested target / thrust does not account for inertia.

PREPARED BY kkh DATE 7[27/N (EVI'EWED BY P(Lt DATE PAGE NO. /3 # E3 9

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NORTHEAST UTILITIES _

1 INPUTS I c'C.N '2 TO l I

CALC. NO.: 89-078-873ES REV O SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4.O DATE: 07/27/95' VALVE NO.: CASE 3 VALVE S/N: E-5278-16-1 OPER. S/N: 152444 OPER. O/N: 358222E INPUT DESCRIPTION INPUT DATA REFERENCES 1 VALVE MANUFACTURER ANCHOR DARLING 7.22 l VALVE SIZE 24.00 IN. 7.22 i VALVE TYPE GATE 7.22 ANSI RATING 150 LB 7.22 VALVE STEM DIAMETER 2.2500 IN. 7.24 OPER. STEM DIAMETER 2.2500 IN. 7.24 NO. THREADS / INCH 3.0 7.24 NO. THREAD STARTS 2 7.24 l

. ACME THREAD TYPE STANDARD SECTION 3.9 l STROKE LENGTH / LIFT 25.3750 IN. 7.24 STROKE TIME OPEN-CLOSE 43.50 SEC. 7.18 STROKE TIME CLOSE-OPEN 42.50 SEC. 7.19 )

VALVE SEAT D'IAMETER 23.7040 IN. 7.24 VALVE MATERIAL A351-CF8 7.24 DIFF. PRESSURE 44 / PSI 7.21 LINE PRESSURE -10 / PSI 7.21 SEISMIC LIMIT - THRUST 85000 LB 7.27 MFG. SUGGESTED - THRUST 0 LB MAX. VLV LIMITS - THRUST 85000 LB 7.27 OPERATOR MANUFACTURER LIMITORQUE 7.22 OPERATOR SIZE SMB-1 7.22 1

NOMINAL MOTOR SIZE 25.0 FT-LB 7.22 MOTOR RPM 3400 7.22 MOTOR TYPE AC MOTOR MANUFACTURER PEERLESS 7.22 MOTOR SERIAL NUMBER FZ29156WC 7.22 UNIT RATIO 72.42/1 SECTION 2.10 HAND WHEEL RATIO 25.30/1 7.12 SAFETY RELATED YES 7.7 COEFF. OF FRICTION 0.1500 SECTION 3.2 TORQUE SWITCH SET'1ING 1.000/4.250 7.13 MAX. SPRING PACK TORQUE 980 FT-LB 7.13 MIN. SPRING PACK TORQUE 108 FT-LB 7.13 i SPRING PACK NUMBER 60-600-0007 7.22 PREPARED BY fbk DATE 7/27[7I REVIEWED BY h DATE 1[7.,) % PAGE NO. h 88 2 3 O

3

• r i

NORTHEAST UTILITIES -

F

_. l CALCULATED OR TABLE VALUES  :

(c N 2 TC  :

CALC. NO.: 89-078-873ES REV O SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4.0 DATE: 07/27/95 l VALVE NO.: CASE 3 VALVE S/N: E-5278-16-1 .

OPER. S/N: 152444 )

OPER. O/N: 358222E l

DESCRIPTION VALUE ,

i VALVE STEM AREA 3.98 IN.**2  ;

VALVE SEAT AREA 441.30 / IN.**2 CALCULATED UNIT RATIO 64.02

, AVERAGE STROKE TIME 43.00 SEC.

DESIGN STROKE TIME 48.64 SEC.

HAND WHEEL NFFICIENCY 0.30 HAND WHEEL TORQUE 250.00 FT-LB MAXIMUM STALL RATIO 171.00

(.

STD.OPER. THRUST RATING 45000.00 LB j STD.OPER. TORQUE RATING 850.00 FT-LB DYNAMIC RUNNING LOAD 4594.24 LB RUNNING EFFICIENCY 0.55 NOTE: Calculated Stroke Time Does Not Account for Degraded Voltage.

l l

PREPARED BY \h DATE 7/27[9.f REVIEWED BY g NP DATE M PAGE NO. /s op 2I d

e

5 - ,

NORTHEAST UTILITIES -

CALCULATED VALUES AND OVER-RIDES i CCA/ 2 TO CALC. NO.: 89-078-873ES REV O SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4. 0 DATE: 07/27/95 VALVE NO.: CASE 3 VALVE S/N: E-5278-16-1 OPER. S/N: 152444 OPER. O/N: 358222E DESCRIPTION VALUE UNITS OVER-RIDE FLAG VALVE FACTOR 0.540 # ON PACKING LOAD 4634.00 LB ON PISTON EFFECT -39.76 LB OFF

. STEM FACTOR 0.0226 FT OFF UNIT PULLOUT EFFICIENCY 0.40 OFF DESIGN APPLICATION FACTOR 0.90 OFF

, STALL EFFICIENCY 0.55 OFF

STALL FACTOR 1.10 OFF UNDER VOLTAGE APP. FACTCR 0.75 ON OP RATED THRUST FACT (CST) 1.4000 63000.00 LB ON OP RATED TORQUE FACT (CST) 1.0000 850.00 FT-LB OFF THRUST (TT) FACTOR 1.4000 63000.00 LB ON TORQUE (TT) FACT 1.1000 935.00 FT-LB OFF PREPARED BY D DATE REVIEWED BY 6@ DATE N PAGE NO. /6 O F 2 2 a

-~ , - , , ,

NORTHEAST UTILITIES

SUMMARY

OF CALCULATED VALUES 2M CALC. NO.: 89-078-873ES REV O SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4.O DATE: 07/27/95 VALVE NO.: CASE 3 VALVE S/N: E-5278-16-1 OPER. S/N: 152444 OPER. O/N: 358222E STEM MOTOR HANDWHEEL ,

LOAD CASES THRUST TORQUE TORQUE TORQUE I (LBS) (FT-LB) (FT-LB) (FT-LB) ,

DESIGN EQUATIONS 15079 341 13.1 45 0 0 0.0 0 MFG. SUGGESTED THRUST j MAX DESIGN CATEGORY MAX. VALVE MFG. LIMITS

• 85000 1921 73.7 253 SEISMIC LIMIT (THRUST)

• 85000 1921 73.7 253 )

MAX. OPER RATED CAP. (THRUST)* 63000 1424 54.6 188 MAX. OPER RATED CAP. (TORQUE)* 37611 850 32.6 112 MAX. OPER SPRING PACK CAP.

• 43363 980 37.6 129 MIN. OPER SPRING PACK CAP. 4779 108 4.1 14 MAX. OPER MOTOR CAPACITY FULL VOLTAGE (100%) 32044 724 25.0 NA I

i UNDER VOLTAGE ( 75%)

• 18025 407 14.1 NA 48467 1095 27.5 NA MAX. OUTPUT @ MOTOR STALL

• LIMITED BY MOTOR CAP. UNDER-VOLTAGE 18025 407 14.1 NA ,

1 OBSERVATIONS ,

i

~

THE CALCULATED UNIT RATIO IS WITHIN 20% OF THE MFG UNIT RATIO.

UNIT RATIO INDICATES THAT THIS OPERATOR IS LOCKING TYPE.

~

THE OPERATOR CAN WITHSTAND STALL TORQUE AND THRUST.

_ VALVE CAN WITHSTAND STALL

~

DYN. RUN. LOAD IS BELOW 33% OF THE MAX MOTOR CAP. AT 100% VOLTAGE.

MOTOR TORQUE ADEQUATE TO OPEN VALVE AT UNDER VOLTAGE CONDITION.

_ MOTOR TORQUE ADEQUATE TO CLOSE VALVE AT UNDER VOLTAGE CONDITION.

NOTES:

1. PARALLEL DISC GATE - VALVE FACTOR 0.3 PER ANCHOR DARLING STRESS REPORT, LOG R91.192, DATED 12-10-91

2. LRA UV PER CALC PA89-078-0272E2, REV O

3. RE-EVALUATED FOR LIMITORQUE PART 21 (ACCURACY) 12/26/92 PREPARED BY O D TE 7!I7!9[

REVIEWED BY 9@ DATE 1 M PAGE NO. /7 OF 21 e

s. . ,

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TARGET THRUST WINDOW CALC. NO.: 89-078-873ES REV O SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4 . 0 DATE: 07/27/95 VALVE NO.: CASE 3 VALVE S/N: E-5278-16-1 OPER. S/N: 152444 OPER. O/N: 358222E EQUIPMENT ACCURACIES & REPEATABILITY:

DIAGNOSTIC ACCURACIES: 9.40  %

TORQUE SWITCH REFEATABILITY: 5.00  %

COMBINATION (SRSS) : 10.65  %

RATE OF LOADING: 1.10 CALCULATED REQUIRED THRUST (ADJUSTED FOR ACCURACIES AND RATE OF LOADING) :

CALCULATED REQUIRED THRUST: 12859 LBS MINIMUM SP CAPACITY: 5883 LBS (AVAILABLE)

MOV HARDWARE CAPABILITY (ADJUSTED FOR ACCURACIES) :

CST TT LIMITING SEISMIC STEM THRUST: 76821 76821 LBS MAX VALVE LIMIT: 76821 76821 LBS MAX OPERATOR LIMIT: (THRUST) 56938 56938 LBS

MAX OPERATOR LIMIT: (TORQUE) 33992 37391 LBS MAX SPRING PACK CAP.: 39190 LBS MOTOR @ 75% VOLTAGE: 16290 LBS THRUST COMPONENT MAXIMUM TOTAL THRUST / TORQUE: 37391 LBS OPERATOR (TORQUE)

(MAX TT)

MAXIMUM CONTROL SWITCH TRIP: 16290 LBS MOTOR @ 75% VOLTAGE (MAX CST)

MINCST - MAXCST TARGET (CALCULATED) 14661 LBS MARGIN 26.7%

MINIMUM CONTROL SWITCH TRIP: 12859 LBS (MIN CST IN AVAILABLE THRUST)

NOTES:

o MAX TT includes the thrust imparted by inertia.

o A TT factor of 1.4000 was applied o The next limiting component is OPERATOR (TORQUE) and the margin to the Min Req. CST is 164.3 %.

o The suggested target / thrust does not account for inertia.

PREPARED BY h DATE 7/27[$f REVIEWED BY 9]N DATE PAGE NO. M OF23

s ? -

NORTHEAST UTILITIES -

^

INPUTS CALC. NO.: 89-078-873ES REV O SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4.0 DATE: 07/27/95 l VALVE NO.: CASE 4 VALVE S/N: E-5278-16-1 i OPER. S/N: 152444 OPER. O/N: 358222E INPUT DESCRIPTION INPUT DATA REFERENCES VALVE MANUFACTURER ANCHOR DARLING 7.22 VALVE SIZE 24.00 IN. 7.22 l VALVE TYPE GATE 7.22 l ANSI RATING 150 LB 7.22 VALVE STEM DIAMETER 2.2500 IN. 7.24 OPER. STEM DIAMETER 2.2500 IN. 7.24 NO. THREADS / INCH 3.0 7.24 NO. THREAD STARTS 2 7.24 ACME THREAD TYPE STANDARD SECTION 3.9 STROKE LENGTH / LIFT 25.3750 IN. 7.24 STROKE TIME OPEN-CLOSE 43.50 SEC. 7.18 STROKE TIME ELOSE-OPEN 42.50 SEC. 7.19 VALVE SEAT DIAMETER 23.7040 IN. 7.24 VALVE MATERIAL A351-CF8 7.24 DIFF. PRESSURE 10 / PSI 7.21 LINE PRESSURE -10 /' PSI 7.21 SEISMIC LIMIT - THRUST 85000 LB 7.27 MFG. SUGGESTED - THRUST 0 LB MAX. VLV LIMITS - THRUST B5000 LB 7.27 OPERATOR MANUFACTURER LIMITORQUE 7.22 OPERATOR SIZE SMB-1 7.22 NOMINAL MOTOR SIZE 25.0 FT-LB 7.22 MOTOR RPM 3400 7.22 MOTOR TYPE AC MOTOR MANUFACTURER PEERLESS 7.22 MOTOR SERIAL NUMBER FZ29156WC 7.22 UNIT RATIO 72.42/1 SECTION 2.10 l HAND WHEEL RATIO 25.30/1 7.12  !

SAFETY RELATED YES 7.7 COEFF. OF FRICTION 0.1500 SECTION 3.2 TORQUE SWITCH SETTING 1.000/4.250 7.13 MAX. SPRING PACK TORQUE 980 FT-LB 7.13 l MIN. SPRING PACK TORQUE 108 FT-LB 7 13 '

SPRING PACK NUMBER 60-600-0007 7.22 PREPARED BY bA DATE 7/2 7[9 f REVIEWED BY N DATE N h PAGE NO. O OF N a

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l u .. .

i NORTHEAST UTILITIES ,

- CALCULATED OR TABLE VALUES 2 TO CALC. NO.: 89-078-873ES REV O

! SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4.0

DATE: 07/27/95

!' VALVE NO.: CASE 4 VALVE S/N: E-5278-16-1 OPER. S/N: 152444 OPER. O/N: 358222E i

i i DESCRIPTION VALUE

~

VALVE STEM AREA 3.98 IN.**2

~

VALVE SEAT AREA 441.30 / IN.**2 l CALCULATED UNIT RATIO 64.02 AVERAGE STROKE TIME 43.00 SEC.

DESIGN STROKE TIME 48.64 SEC.

HAND WHEEL EFFICIENCY 0.30 I

j HAND WHEEL TORQUE 250.00 FT-LB i MAXIMUM STALL RATIO 171.00 a

' ( 45000.00 LB STD.OPER. THRUST RATING STD.OPER. TORQUE, RATING 850.00 FT-LB DYNAMIC RUNNING LOAD 4594.24 LB RUNNING EFFICIENCY 0.55 NOTE: Calculated Stroke Time Does Not Account for Degraded Voltage.

l l

PREPARED BY D DATE 7/2 7[ff ,

REVIEWED BY b DATE 1 W PAGE NO. 2O M 22 e

NORTHEAST UTILITIES _

CALCULATED VALUES AND OVER-RIDES 1

CALC. NO.: 89-078-873ES REV O SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4.0 DATE: 07/27/95^

VALVE NO.: CASE 4 VALVE S/N: E-5278-16-1 OPER. S/N: 152444 OPER. O/N: 358222E DESCRIPTION VALUE UNITS OVER-RIDE FLAG VALVE FACTOR 0.540 ON

/

PACKING LOAD 4634.00 LB ON PISTON EFFECT -39.76 LB OFF STEM FACTOR 0.0226 FT OFF UNIT PULLOUT EFFICIENCY 0.40 OFF DESIGN APPLI' CATION FACTOR 0.90 OFF STALL EFFICIENCY 0,55- OFF STALL FACTOR 1.10 OFF

(

\

UNDER VOLTAGE APP. FACTOR 0.75 ON OP RATED THRUST FACT (CST) 1.4000 63000.00 LB ON OP RATED TORQUE FACT (CST) 1.0000 850.00 FT-LB OFF THRUST (TT) FACTOR 1.4000 63000.00 LB ON TORQUE (TT) FACT 1.1000 935.00 FT-LB OFF 1

PREPARED BY b DA'E T

REVIEWED BY ibW DATE ill PAGE NO. 2 / C# 2J e

e

NORTHEAST UTILITIES _

SUMMARY

OF CALCULATED VALUES

' CALC. NO.: 89-078-873ES REV O SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4.O DATE: 07/27/95 VALVE NO.: CASE 4 VALVE S/N: E-5278-16-1 OPER. S/N: 152444 OPER. O/N: 358222E STEM MOTOR HANDWHEEL LOAD CASES THRUST TORQUE TORQUE TORQUE (LBS) (PT-LB) (FT-LB) (FT-LB)

DESIGN CATEGORY 6977 158 6.0 21 DESIGN EQUATIONS 0 0 0.0 0 MFG. SUGGESTED THRUST MAX DESIGN CATEGORY MAX. VALVE MFG. LIMITS

• 85000 1921 73.7 253 SEISMIC LIMIT (THRUST)

• 85000 1921 73.7 253 63000 1424 54.6 188 MAX. OPER RATED CAP. (THRUST)*

MAX. OPER RATED CAP. (TORQUE)* 37611 850 32.6 112 MAX. OPER SPRING PACK CAP.

• 43363 980 37.6 129 4779 108 4.1 14 MIN. OPER SPRING PACK CAP.

. MAX. OPER MOTOR CAPACITY FULL VOLTAGE (100%) 32044 724 25.0 NA UNDER VOLTAGE ( 75%)

• 18025 407 14.1 NA

( 48467 1095 27.5 NA MAX. OUTPUT @ MOTOR STALL 18025 407 14.1 NA o LIMITED BY MOTOR CAP. UNDER-VOLTAGE OBSERVATIONS THE CALCULATED UNIT RATIO IS WITHIN 20% OF THE MFG UNIT RATIO.

[ UNIT RATIO INDICATES THAT THIS OPERATOR IS LOCKING TYPE.

~THE OPERATOR CAN WITHSTAND STALL TORQUE AND THRUST.

_ VALVE CAN WITHSTAND STALL DYN. RUN. LOAD IS BELOW 33% OF THE MAX MOTOR CAP. AT 100% VOLTAGE.

~ MOTOR TORQUE ADEQUATE TO OPEN VALVE AT UNDER VOLTAGE CONDITION.

~ MOTOR TORQUE ADEQUATE TO CLOSE VALVE AT UNDER VOLTAGE CONDITION.

NOTES:

1. PARALLEL DISC GATE - VALVE FACTOR 0.3 PER ANCHOR DARLING STRESS REPORT, LOG R91.192, DATED 12-10-91

2. LRA UV PER CALC PA89-078-0272E2, REV 0

3. RE-EVALUATED FOR LIMITORQUE PART 21 (ACCURACY) 12/26/92 PREPARED BY b DATE REVIEWED BY kW DATE PAGE NO. 22- or 2 2 a

e

..', . I NORTHEAST UTILITIES _

TARGET THRUST WINDOW g 7g I

CALC. NO.: 89-078-873ES REV O SITE: MILLSTONE UNIT 2 PROGRAM: BWNT MOVE Ver. 4. 0 DATE: 07/27/95-VALVE NO.: CASE 4 VALVE S/N: E-5278-16-1 OPER. S/N: 152444 OPER. O/N: 358222E EQUIPMENT ACCURACIES & REPEATABILITY:

DIAGNOSTIC ACCURACIES: 9.40  %

TORQUE SWITCH REPEATABILITY: 5.00  %

COMBINATION (SRSS) : 10.65  %

RATE OF LOADING: 1.10 CALCULATED REQUIRED THRUST (ADJUSTED FOR ACCURACIES AND RATE OF LOADING):

CALCULATED REQUIRED THRUST 2885 LBS MINIMUM SP CAPACITY: 5883 LBS (AVAILABLE)

MOV HARDWARE CAPABILITY (ADJUSTED FOR ACCURACIES) :

CST TT LIMITING SEISMIC STEM THRUST: 76821 76821 LBS

. MAX VALVE LIMIT: 76821 76821 LBS MAX OPERATOR LIMIT: (THRUST) 56938 56938 LBS

( MAX OPERATOR LIMIT: (TORQUE) 33992 37391 LBS MAX SPRING PACK CAP.: 39190 LBS MOTOR @ 75% VOLTAGE: 16290 LBS THRUST COMPONENT MAXIMUM TOTAL THRUST / TORQUE: 37391 LBS OPERATOR (TORQUE)

(MAX TT)

MAXIMUM CONTROL SWITCH TRIP: 16290 LBS MOTOR @ 75% VOLTAGE (MAX CST)

MINCST - MAXCST TARGET (CALCULATED) 11766 LBS MARGIN 176.9%

MINIMUM CONTROL SWITCH TRIP: 5883 LBS MIN SPRING PACK (MIN CST IN AVAILABLE THRUST)

NOTES:

o MAX TT includes the thrust imparted by inertia.

o A TT factor of 1.4000 was applied o The next limiting component is OPERATOR (TORQUE) and the margin to the Min Req. CST is 477.8 %.

o The suggested target / thrust does not account for inertia.

PREPARED BY fb DATE -7h7l9f REVIEWED BY M DATE C PAGE NO. 28 07 27

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