ML20116J509

Pressure Locking Evaluation for Required Pullout Force

ML20116J509
Person / Time
Site:	Sequoyah
Issue date:	08/06/1996
From:	TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20116J490	List: ML20116J488 ML20116J497 ML20116J502 ML20116J505 ML20116J509 ML20116J515 ML20116J517 ML20116J522 ML20116J525 ML20116J536 ML20116J539 ML20116J541 ML20116J544
References
2-FCV-63-157, GL-89-10, NUDOCS 9608130246
Download: ML20116J509 (2)

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'MdV Calc No. 2-FCV-63-157 (GL 89-10) Page lof't PRESSURE LOCKING EVALUATION FOR REOUIRED PULLOUT FORCE MCV '2-FCV-63157 ;_ Valve type = ;FlesWedge! l

n. l k=lNPUTS'

'. 7 VALVE DWG l88517-3D EPRI MOV PPP INTERNAL DESIGN INFO, Ref.

VALVE DESIGN DATA MARK No. &8802A - ,. D1 -_ E1 , M,1_

4.28125 :2.93751. 1 2 .2.5 y: a e s 0.4 theta = 35 deg a= ((D1 + E1) / 2) / 2 = 1.804688 a= 1.8047 inches ro= 1.250 inches b= M1/ 2 = 1.25 = ro b= 1.250 inches v= 0.3 v= Poisson's Ratio = IUPO.3' u - fnction coefficient PRESSURE and TEMPERATURE DATA based on Calc method. & EPRI results theta = 1/2 total valve 32235 psi disk angle Pbon =

Phigh = wpu25 psi Plow = cn2220 psl DP = 25 psid NormalTemp = ,

aww0 F

&mpmo F Max Temp =

Deha Temp = 0 F

..Pbonnet = Pbon + (Delta Temp *33 psi /F) 2235 psi ROARK FORMULAS 0.041969 C2= (1/4)(1-(b/a)2[1+2in(a/b)]}

0.004014 C3= (b/4a)([(b/a)2+1]In(a/b)+(b/a)2-1}

C8= (1/2)[1+v+(1-v)(b/a)2] __0.817913 0.2284 C9= (b/a)([(1+v)/2]In(a/b)+[(1-v)/4][1-(bla)2]}

0.000322 L11= (1/64)(1+4(rola)2 5(rola)4-4(rola)2[2+(rola)2]In(a/ro 0.039121 L17= (1/4)(1-((1 v)/4)[1-(ro/a)4]-(ro/a)2[1+(1+v)ln(a/ro)]} Load Constant = (C2L17-C8L11)/(C2C9-C3C8) l 0.2187121 SEAT REACTION LOAD (BONNET psi) 882.2 lb/in Reaction at Hub Perimeter = QH(Bonnet) = Pbonnet(a)(Load Constant)

                                                                                                                     -438.2 lb/in Reaction at Seat: QS(Bonnet) = QH(Bonnet)(b/a)-(Pbonnet/2a)(a2-b2)

SEAT REACTION LOAD (Disk Area DP) 9.86767 lb/in Reaction at Hub perimeter = QH(DiskDP) = (DP)(a)(Load Constant)

                                                                                                                 -4.90133 lb/in Reaction at Seat = QS(DiskDP) = QH(DiskDP)(b/a)-((DP)/2a(a2-b2))

SEAT REACTION LOAD (Hub Area DP) 25.49267 lb/in Force on Hub due to DP = Whub = OH(DPdisk)+(DP)PI(b^2))/2PI(b) -17.6573 lb/in Reaction at Seat = QS(HubDP) :': ( Whub)(b/a)

                                                                                                                  -889.114 lb/in Sum of Seat Reaction Loads = 2*QS(Bonnet)-QS(DiskDP)+QS(HubDP)                                               0.387951 VF = mu/(cosA + musinA)                                                                                       -3911.15 lbs Thrust Load = VF'(Sum Seat Reaction)*(Seat Circumference)                                                        59630 lbs Unwsdging Load (Static test)
                                                                                                ~

TOTAL THRUST = Thrust Load + Unwedging Load = l -13541.1llbs NOTE: THE NEGATIVE SIGN INDICATES THAT THE STEM IS IN TENSION 9608130246 960806 PDR ADOCK 05000327 P PDR Rev. Prepared: Checked: gg u n

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MOV Calc No. 2-FCV-63-157 (GL 69-10) Page 2oF1

         ?               PRESSURE LOCKING REQUIREMENT =                     13541 (bs ACTUATORNALVE CAPABILITY EVALUATION                      CALCULATION:         '2-FCV-63-4 57 Actuator Model                                                         'SMS-D i Motor Start Torque (MT)                                                     ..J40 filbs Overall Gear Ratio (OGR)                                                  (41.33' Pullout Efficiency (PE)                                              ,        (40%

Application Factor (AF) 0.9 or 1.0 .g {0.9 1.0 or (VF/460)"2  ? $1.0000 434.3VAC Valve Factor (VF) i Stem Factor (SF) 0.0jd Max Temperature (Temp) 215 F j Loss Percentage (elevated temp) E2Q%0.9069 Note 1

.                     Torque Loss Factor = 1 Loss %*(Temp-104)/(356-77) s Actuator Torque Capability = (MT

• OGR
• PE
• AF
• TLF
• VF) 539.75 filbs SF =

1 .. Actuator Thrust Capability = Torque / Stem Factor 31564lbs 0.0171 Actuator Thrust / Torque Rating i~~:24000 lbs O_1500, filbs l Valve Weak Link Thrust / Torque Rating [ 20200 lbs SF = f 345.42 ftibs 0.0171 k' Seismic Thrust / Torque Rating CQ{0,00 lbs SF =

;                                                                                                 410.4 filbs          0.0171 i,                                                                                                                            ,

3 Note 1:

Reference:

Limitorque Technical Update 93-03 \ RESULTS: PRESSURE LOCKING REQUIREMENT = 13541 lbs ] . ACTUATOR / VALVE LIMITING CAPABILITY = 20200 lbs i j COMMENTS: 5 T l i I _ 4

  )

s k 2 erepared: Checked:  % aev.

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