ML17333A519
| ML17333A519 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 07/12/1996 |
| From: | Burkamper W, Patel Y ENGINEERING & MANAGEMENT, INC. |
| To: | |
| Shared Package | |
| ML17333A518 | List: |
| References | |
| AE-DC-010, AE-DC-010-R00, AE-DC-10, AE-DC-10-R, NUDOCS 9607290212 | |
| Download: ML17333A519 (40) | |
Text
Engineering 1
%. Management Specialists Inc.
l SUMP PUIVlP VALVEPOTENTIAL PRESSURE LOCKING EFFECTS ANALYSIS D.C. COOK NUCLEAR STATION UNITS 1' AMERICAN ELECTRtC POWER SERVICE CORP.
PREPARED BY EMS, INC.
CALC. NO.: AE-DC-010 REV. 00, DATE: 07/12/1996
'7607290212 '760722 PDR ADQCK 05000315 P PDR 1401 BRANDING LANE, SUITE 240 ~ DOWNERS GROVE, ILUNOIS 60515 ~ PHONE: (708) 971-9791 ~ FAX: (708) 971-9795
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I Engineering 8r, Management Specialists Inc.
CERTIFICATE OF CONFORMANCE July 12, 1996 Client: AEP Service Corp.
Utility: Indiana Michigan Power Co.
Plant Name: D.C. Cook Client Order: A-2261 Tag Numbers: 1/2ICM-305, 1/2ICM-306
¹ This is to certify that, all the work in the following report AE-DC-010, Revision 0 was performed in accordance with the approved EMS Inc. Quality Assurance Program, EMS Inc. Quality Assurance Manual, Revision 01, dated 12/16/93.
Y.A. Patel .. Wm. Burkamper Engineering Specialist Quality Assurance Manager
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- -V : 62 33068 RE"=ISTERED
- PROF=SSIOi<AL:
1401 BRANDING LANE, SUITE 240 ~ DOWNERS GROVE, ILLINOIS 60515 ~ PHONE: (708) 971-9791 ~ FAX: (708) 971-9795
Engineering 8r, Management Specialists Inc.
Analysis for Sump Pump Valve Potential Pressure Locking Effects AMERICAN ELECTRIC POWER SERVICE CORP.
Station: D.C. COOK NUCLEAR STATION UNIT 1 AND 2 Valve Tag Nos.: 1/2ICM-305, 1/2!CM-306 Calculation No. / Rev. No.: AE-DC-010 Rev. 00 Issue Date: 07/12/1996 Pressure rise due to heating: d,p = 202.60. 26 psi Operator Output Thrust Capability based on the Rated Output Torque and stem COF p = 0.20: OTC = 67003.48 lb Available margin based on the Rated Output Torque, stem COF p, = 0.20 and wedge coefficient of friction p= 0.47: M, = 7643.54 Ib Operator Output Thrust Capability based on the Degraded Voltage (17%) Output Torque, stem COF p = 0.15 and wedge OTCD 61 51 8 87 Ib coefficient of friction p= 0.47:
Available margin based on the Degraded Voltage (17%) Output Torque, stem COF p = 0.15 and wedge coefficient of friction M2 = 2158.93 Ib p= 0.47:
Page No.: i of iiii 1401 BRANDING LANE, SUITE 240 ~ DOWNERS GROVE, ILLINOIS 60515 ~ PHONE: (708) 971-9791 ~ FAX: (708) 971-9795
Pressure rise due to heating: hp = 101. 20 psi Operator Output Thrust Capability based on the Degraded Voltage (17%) Output Torque, stem COF p, = 0.20 and wedge OTCo 51 233 72 It) coefficient of friction p= 0.47:
Available margin based on the Degraded Voltage (17%) Output Torque, stem COF p = 0.20 and wedge coefficient of friction M~ = 14487.61 Ib p= 0.47:
Page No.: ii of iiii
Calculation No. AE-DC-010, Rev. 00 Page iii of iiii Project No. AEP-002 1.0 Purpose 2.0 Design Input 3.0 Summary (and Conclusion) 4.0 Criteria and Assumptions 5.0 Calculations and Results 5.1 Analysis of pressure rise in bonnet due to heating 5.2 Operator thrust capability based on the rated output torque, stem COF p = 0.20 and hp = 202.60 psi 5.3 Operator thrust capability based on degraded voltage output torque, stem COF p = 0.15, wedge coefficient of friction p = 0.47 and hp = 202.60 psi 5.4 Operator thrust capability based on degraded voltage output torque, stem COF p = 0.20, wedge coefficient of friction p = 0.47 and hp = 101.20 psi "
6.0 References 19 7.0 Attachments 21 Mathcad Global Definitions
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Engineering 8s Management Specialists Inc.
Gales for Sump Pump Valve Potential Pressure Locking Effects Cate No. AE-DC-010 Rev. 00 Date 07/1Z/96 Safety-Related Non Safety-Related Page I of 2i H
Client AEP Date 7/y~/gg project D.C. COOK NUCLEAR STATION Reviewed y: Date .> i.2
(
qi Proj. No. AE-002 Date 1.0 PURPOSE The purpose of this analysis is to determine the actual pressure in the bonnet, the unwedging force, its comparison to the actuator's capability and available margin due to specified temperature change.
EQUIPMENT DESCRIPTION Valve Mfg. ANCHOR/DARLINGVALVE COMPANY Type / Size DOUBLE DISC GATE VALVES /18 inch Model No. : CLASS S70 Stainless Steel Double Disc with SMB-2-60 Limitorque Actuator A/DV I.D. jggJ',~ (Ref. 2)
E 5071-73 1/2ICM-305, 1/2ICM-306 2.0 DESIGN INPUT Ref. 4 Temperature change bT = 4.4' Ref. 4 Packing Load: Tp = 1575 Ib Wedging force from closing stroke: F= 44470 Ib Ref. 4 Pullout efficiency = 0.4 Ref. 4 Overall Gear Ratio = 80: 1 Ref. 4 Rated voltage = 575 V Ref. 4 Motor start torque = 60 ft-Ib Ref. 4 Disc mean seat dia. = 17.38 inch Ref. 4
Engineering R Management Specialists Inc.
Gales for Sump Pump Valve Potential Pressure Locking Effects Calc No. AE-DC-010 Rev. 00 Date 07/12/96 H Safety-Related Non Safety-Related Page L of 2I Client AEP Prepared by: Date Project D.C. COOK NUCLEAR STATION Reviewed by: Date Proj. No. AE402 Approved by: Date
SUMMARY
AND CONCLUSIONS 3.1 Valve bonnet pressurization rate:
The U.S. NRC Generic Letter (GL) 95-07 requires all nuclear plant licensees to perform evaluation or confirm previously performed evaluations of safety related power operated gate valves for susceptibility to thermally induced pressure locking. It further requires the licensees to take proper actions to ensure that the valves will perform their intended safety functions during the accident condition. One important factor to assure that the valve will operate under thermally induced pressure locking condition is to verify that adequate opening pull capability is available in the valve actuator for overcoming the additional loads due to thermal pressure locking condition.
Since the publication of GL 95-07, the thermally induced pressure locking.
of gate valves has been extensively evaluated, primarily by testing. Ref. 8 presents an analytical method to predict the increase in bonnet pressure due to increase in temperature of water inside the bonnet. This reference also performs a review of the actual valve experience described in the literature to determine the expected pressurization rates in the existing hardware designs.
It applies a statistical approach to reconcile the differing pressurization rates reported in the literature. An averaging. technique is then introduced to capture the wide scatter associated with the measured test data.
Based on this study, it is concluded in Ref. 8 that a pressurization rate of 23 psi/'F is a reasonable number to use for estimating valve bonnet pressurization levels.
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1 Engineering dh Management Specialists Inc.
Gales for Sump Pump Valve Potential Pressure Locking Effects Gale No. AE-DC-010 Rev. 00 Date 07/IZ/96 Page 3 H Safety-Related Q Non Safety-Related of~2 Client AEP Prepared by: Date Project'.C. COOK NUCLEAR STATION 'eviewed by: Date Proj. No. AE402 Approved by: Date The analysis presented here is conservative because it is based on a solid water filled bonnet with no air entrapment. In most valves, especially the low cycle valves such as the one analyzed here, it is impossible to flush out all the air and not to have any air pocket from cycle to cycle. The existence of an air pocket reduces the thermal pressurization rate to a much lower level than what is considered in this analysis (46.046 psi/'F).
3.2 Summary of Results Pressure rise due to heating: b,p = 202.60. 26 psi Operator Output Thrust Capability based on the Rated Output Torque and stem COF, p = 0.20: OTCR = 67003.48 Ib Available margin based on the Rated Output Torque, stem COF p = 0.20 and wedge coefficient of friction p= 0.47: M, = 7643.54 lb Operator Output Thrust Capability based on the Degraded Voltage (17%) Output Torque, stem COF p = 0.15 and wedge OTCD 61 51 8 87 It) coefficient of friction p= 0.47:
Available margin based on the Degraded Voltage (17%) Output Torque, stem COF p = 0.15 and wedge coefficient of friction M~ = 2158.93 Ib p= 0.47:
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Engineering & Management Specialists Inc.
Gales for Sump Pump Valve Potential Pressure Locking EQ'ects Calc No. AE-DC-010 Rev. 00 Date 07/12/96
/
2 Safety-Related Non Safety-Related Page of~2 Client AEP Prepared by: Date Project D.C. COOK'NUCLEAR STATlON Reviewed by: Date Proj. No. AE402 Approved by: Date Pressure rise due to heating: hp = 101. 20 psi Operator Output Thrust Capability based on the Degraded Voltage (17%) Output Torque, stem COF p, = 0.20 and wedge OTCo = 51233.72 Ib coefficient of friction p= 0.47:
Available margin based on the Degraded Voltage (17%) Output Torque, stem COF p = 0.20 and wedge coefficient of friction Ms = 14487.61 Ib N= 0.47:
4.0 CRlTERIA AND ASSUMPTlONS The valve is acceptable if the pullout capability of the actuator is greater than the sum of drag force, packing load and unwedging force.
There are no assumptions made in this calculation.
Engineering & Management Specialists Inc.
Gales for Sump Pump Valve Potential Pressure Locking EQ'ects Calc No. AZ-DC-010 Rev. 00 Date 07/12/96 Safety-Related Non Safety-Related Page S of Rl H Q Client AEP Prepared by: Date Project D.C. COOK NUCLEARSTATION Reviewed by: Date Proj. No. AE-002 Approved by: Date 5.0 CALCULATIONSAND RESULTS 5.1 Analysis of pressure rise in bonnet due to heating The bonnet is treated as a cylinder capped by a hemisphere and filled with water.
The component volu'mes are expressed in terms of of the inner radius and cylinder height by the following equations:
H:= 13.625 in Ref. 1 R:= 10.6875 in Ref. 1 Vc = ~'R2'H V c = 4889.20941 in ~
Vh:=-n 2.3 3
R (2)
V h = 2556.74254.in The volume of water is given by:
Vw .= Vc+ Vh (3)
V w = 7445.95195 in ~
The volume change for the water due to thermal expansion and compressibility is expressed as:
b,V= V(uhT- P b,p) (4)
1 4
l Engineering 8s Management Specialists Inc.
Gales for Sump Pump Valve Potential Pressure Locking Effects Gale No. AE-DC-010 Rev. 00 Date 07/12/96 H Safety-Related Q Non Safety-Related Page 6 of
~'ate Client AEP Prepared by:
Project D.C. COOK NUCLEAR STATION Reviewed by: Date Proj. No. AE402 Approved by: Date where:
avolumetric coefficient of expansion P = compressibility hT = temperature change dp = pressure change The volume change for cylindrical section is given by:
bV, = 3a~V,b,T+K,hp (5) where:
a- linear coefficient of expansion of the bonnet K, = cylinder stiffness parameter The factor of 3 in equation 5 converts the linear coefficient to a volumetric coefficient to a first order in 4V, In order to evaluate Kwe first consider the stresses in a cylinder due to internal pressurization. The stresses in the tangential and axial directions due to pressurization are given by:
(zo = R b,p/t cr,= Rbp/2t where:
t = the wall thickness and the resulting strains are given by:
Otal OVo
)
Engineering 4 Management Speeia1ists Inc.
Gales for Sump Pump Valve Potential Pressure Locking EQ'ects Calc No. AE-DC-010 Rev. 00 Date 07/12/96 Safety-Related Non Safety-Related Page '7 of
>I'ate Client AEP Prepared by:
Project D.C. COOK NUCLEAR STATION Reviewed by: Date Proj. No. AE402 Approved by: Date s =1/E(ve-vo,) (8) s, = 1/E (cz,- vs) (9)
The cylinder volume change due to these strains is given as follows:
bVc / Vc = 26R / R + ~ / = 2' H e (10) where:
so and s, are the strains in the tangential and axial directions.
The stiffness parameter can be evaluated using the following data:
t:= 1.125 in Ref. 1 E:= 30 10 psi Ref. 12 v:= 0.3 and the following formula which can be deduced from equations 6 through 10 and the definition of K,in equation 5.
Kc'= 2-2v ~
Et Kc = 0.00294.lb "
in For the hemisphere section the volume change is given by:
b.V= 3 u, Vht+ Kbp (12)
The volume change due to pressure only is given by:
hV / V= 3 d R / R = 3s = 3(1-v) o' E (13)
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Engineering Management Syeciahsts Inc.
Calcs for Sump Pump Valve Potential Pressure Locking Effects Calc No. AE-DC-010 Rev. 00 Date 07/12/96 H Safety-Related Q Non Safety-Related Page '8 of 2t Client AEP Prepared by: Date Project D.C. COOK,NUCL,EAR STATION Reviewed by: Date Proj. No. AE402 Approved by: Date where the stress is given by:
v = Rhp/2t (14)
Combining equations 13 and 14 and using the definition of K, in equation 12 we obtain the following:
'=- (1 v)
Vh R Kh 2
~
Et Kh =0.00085 lb " in For calculations we need the following additional data:
ub .= 9.19 10 deg Ref. 12 po '.= 14.7 psl bT:= 4.4 deg Ref.4-For Water at 94.4':
" Ref. 11, pages:
aw:= 0.000191.deg P w:= 3.04 10 psi 2130 8 2148 The following equation is obtained by setting the volume change for water equal to the sum of the changes for the cylinder and hemisphere (equations 6 and 12 and solving for the pressure:
(~w - 3 "b) ~w bp:
bT (16)
(~w'>w Kc+ Kb) bp = 202.60439-psi hp/ F =46.046 psil' hp+ p o = 217.30439 psi
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Engineering & Management SyeciaHsts Inc.
Cate No. AE-DC-010 Rev. 00 Date 07/12/96 H Safety-Related Q Non Safety-Related Page ~ of
~2'lient AEP Prepared by: Date Project D.C. COOK NUCLEAR STATION Reviewed by: Date Proj. No. AE402 Approved by: Date 5.2 Evaluate Operator Output Thrust Capability based on the Rated Output Torque and stem GOF p = 0.20, Ref. 10, page 6-3, page 6-4 Motor Torque, Parameters are based on Ref. 4:
Motor Torque based on rated voltage of 575 V MT R .= 60 ft Ib Operator Output Torque based on Rated Voltage:
Overall gear ratio 80 OAR:=
1 Pullout efficiency of the gear train PE:= OA Application factor AF':= 0.9 OOTR .-- OAR PE AF MTR OOTR = 1728 Ib ft Stem Factor based on p = 0.20 2
Lead:=.
Dia:= 2.0 3
Refs. 48 7 Pitch:= P,1 .= 0.20 3
Engineering & Management Specialists I'nc.
Gales for Sump Pump Valve Poteatial Pressure Lochng Effects Gale No. AE-DC-010 Rev. 00 Date 07/12/96 Safety-Related Non Safety-Related Page~oof Xl Client AEP Prepared by: Date Project D.C. COOK NUCLEAR STATION Reviewed by: Date Proj. No. AE402 Approved by: Date Stem Factor based on p = 0.20 for stub ACME thread:
N,1 .= 0.20 Lead 2 Dia 0.6 Pitch 77.88 1 48 F S1 ' ~
ft Ref. 9 P1 Lead 0.9682 m (2 Dia - 0.6 Pitch)
F s1 0.0257897.ft t
Operator Output Thrust Capability based on Rated Output Torque and and COF p=0.20:
OOT' OTC R .=
s1 OTC R 67003 48762 Ib Disc Drag Force:
F<<= Total drag force Wedge face coefficient of friction', per NUREG/CR-5807, Ref. 13, page 9 d s:= 17.38 in Disc sealing diameter, mean seat diameter, Ref. 4 P b ..= 202.60439 psi Valve body cavity pressure (b,p)
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Engineering & Management Specia1ists Inc.
Gales for Sump Pump Valve Potential Pressure Locking EQ'ects Cate No. AE-DC-010 Rev. 00 Date 07/12/96 Et Safety-Related Non Safety-Related Page II of 2.l Client AEP Prepared by: Date Project D.C. COOK NUCLEAR STATION Reviewed by: Date Proj. No. AE-002 Approved by: Date I wads 2. Pb Fdt'= 2 Ref. 13 F dt = 45182.07067 Ib Unwedging load F, in "parallel expanding" gate valve is calculated based on Equation in NUREG/CR-5807, Ref. 13 e:= 25 deg Lower wedge angle, Ref. 1 I w:=047 Ref. 13 Fsc '= 44470 Ib Wedging force from closing stroke, Ref. 4 Calculate F from equation 2.6a, Ref. 13 cos(e) p, w. sin(e)
Fn:= . Fsc sin(8) (1 nsl ) + 2 )L+ ccs(8)
F n = 26642.93898. Ib Calculate F, from equation 2.7a, Ref. 13 sin(8) ()L~ 1) + 2 )L~ ccs(8)
F ~
Fn cos(e) + pw.sin(e)
F s = 12602.87169 Ib OTC R = 67003.48762 Ib Operator capability
Engineering 8s Management Syecia1ists Inc.
Gales for Sump Pump Valve Potential Pressure Locking EQ'ects Calc No. AZ-DC10 Rev. 00 Date 07/12/96 Safety-Related Non Safety-Related Page l~ of 21 Client AEP Prepared by:
'ate Project D.C. COOK- NUCLEAR STATION Reviewed by: Date Proj. No. AE<02 Approved by: Date Tp '.= 1575 Ib Packing load, Ref. 4 M, = Margin based on Rated Actuator Torque and p, = 0.2 M1.= OTC R Fdt- Tp- Fs M = 7643.54526 Ib 1
Margin available is 7.643 kips, however the stem coefficient of friction p, = 0.2 and wedge coefficient of friction N= 0.47 are very conservative.
Based on testing, industry commonly uses a stem coefficient of friction less than p = 0.15.
Since actual testing value for the stem coefficient of friction is not available, a more realistic value for stem coefficient of friction p =0.15isused.
lf this coefficient of friction is used with 17% degraded voltage on the motor torque, the results are as follows:
5.3 Evaluate Operator Output Thrust Capability based on the degraded voltage, stem coefficient of friction p, = 0.15 and wedge coefficient of friction p= 0.47.
Motor Torque based on degraded voltage of 17%
Min. available voltage based on 17% degradation: V 17 = 477 V Rated voltage, Ref. 4 VR .= 575 V MT p .= MT R.V 17 VR Ref. 10, page 6-3 MT p = 41.29071'b ft
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Gales for Sump Pump Valve Potential Pressure Locking Effects Calc No. AE-DC-010 Rev. 00 Date 07/12/96 Safety-Related Non Safety-Refated Page l5 of~N H Q Client AEP Prepared by: Date Project D.C. COOK. NUCLEAR STATION Reviewed by: Date Proj. No. AE402 Approved by: Date Operator Output Torque based on 17% degraded voltage:
AF:= 1.0 OOTD .= OAR PE AF MTD OOT D 1321 30262'Ib f Stem Factor based on p = 0.15 for stub ACME thread:
@2.= 0.15 Lead 0.8 (2.Pia Pitch) 77.88 2 48 F s2 = ~
ft Ref. 9 2'>2'Lead n (2 Dia - 0.6 Pitch}
F s2 = 0.021478 ft Operator Output Thrust Capability based on Degraded Voltage Output Torque and and stem COF N = 0.15:
OTC p:= OOT D Fs2 OTC D = 61518.87758 lb Disc Drag Force:
F<< = Total drag force Ollll ov.
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Engineering 8(: Management Syecia1ists lac.
Gales for Sump Pump Valve Potential Pressure Locking Effects Calc No. AE-DC-010 Rev. 00 Date 07/12/96 Safety-Related Non Safety-Related Page I'l of ~2.
Client AEP Prepared by: Date Project D.C. COOK NUCLEAR STATION Reviewed by: Date.
Proj. No. AE402 Approved by: Date pw:= 047 Wedge face coefficient of friction d s:= 17.38 Disc sealing diameter, mean seat diameter P b .= 202.60439 psi Valve body cavity pressure
> w'"'d s 2.'P b
F dt:=
2 F dt = 45182.07067 Ib Unwedging load F, in "parallel expanding" gate valve is calculated based on Equation in NUREG/CR-5807, Ref. 13 8:= 25 deg Lower wedge angle i w:=047 F sc:= 44470 Ib Wedging force from closing stroke Calculate F from equation 2.6a cos(9) - pw sin(8)
Fn:= Fsc sin(8) (1 - )L~
j + 2 p~ cos(8)
F n = 26642.93898.lb
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t Engineering & Management Specia1ists Inc.
Gates for Sump Pump Valve Poteatial Pressure Lockiag EQects Calc No. AE-DC-010 Rev. 00 Date 07/12/96 Safety-Related Non Safety-Related Page l5 of 2.I
'ate C Went AEP Prepared by:
Project D.C. COOK NUCLEAR STATION Reviewed by: Date Proj. No. AE<02 Approved by: Date Calculate F, from equation 2.7a sin(e) (pvf 1) + 2 p~ cos(e)
F Fn cos(e) w pw sin(e)
Fs 12602.87169'b OTC D = 61518.87758 Ib . Operator capability
'= 1575 Ib Packing load Tp M, = Margin based on Degraded voltage (17%) actuator torque and N
= 0.15 M2.= OTCP Fdt- Tp- Fs I M2 = 2158.93522 Ib I
5.4 Evaluate Operator Output Thrust Capability based on the degraded voltage (17%), stem coefficient of friction p, = 0.20, wedge coefficient of friction p
= 0.47 and the pressurization rate of 23 psil' discussed on page 2, see Ref 15.
Motor Torque based on degraded voltage of 17%
Min. available voltage based on 17% degradation: V 17 .= 477. V Rated voltage, Ref. 4 VR .= 575 V MT p '= MT R V 17 VR Ref. 10, page 6-3 MTp = 41.29071 Ib ft
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Engineering 8c Management Specialists Inc.
Gales for Sump Pump Valve Poteatial Pressure Locking EQ'ects Calc No. AE-DC-010 Rev. 00 Date 07/12/96 Safety-Related H Non Safety-Related Page I& of~>
Client AEP Prepared by: Date Project D.C. COOK NUCLEAR STATlON Reviewed by: Date Proj. No. AE402 Approved by: Date Operator Output Torque based on 17% degraded voltage:
AF =1 OOT p = OAR PE AF MT p OOT p = 1321.30262'Ib'ft Stem Factor based on p = 0.20 for stub ACME thread:
P1 .= 0.20 Lead /2 Dia 0.6 Pitch 77.88 "1 48 F s1 - ( ft Ref. 9" 2 p1 Lead m (2.Dia - 0.6 Pitch)
F s1 0.0257897 ft Operator Output Thrust Capability based on Degraded Voltage (17%)
Output Torque and and stem COF p = 0.20:
OOT p OTCp '
$1 OTC D 51233 72916'b 0'isc >w Drag Force:
F<< = Total drag force
.= 0.47 Wedge face coefficient of friction
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Engineering e
4 Management Specialists Xnc.
~
Gales for Sump Pump Valve Potential Pressure Locking EQ'ects Gale No. AE-DC-010 Rev. 00 Date 07/12/96 2 Safety-Related Non Safety-Related Page~of~
Client AEP Prepared by: Date Project D.C. COOK NUCLEAR STATION Reviewed by: Date Proj. No. AE402 Approved by: Date d s:= 17.38 in Disc sealing diameter, mean seat diameter P b:= 101.2.psi Valve body cavity pressure 23 psi/' X 4.4' w'~'d s 2.'P b F dt:=
F dt = 22568.2452. lb Unwedging load F, in "parallel expanding" gate valve is calculated based on Equation in NUREG/CR-5807, Ref. 13 6:= 25 deg Lower wedge angle I w:=04 sc '4 Wedging force from closing stroke Calculate F from equation 2.6a cos(6) p w sin(6)
Fn:= . Fsc sin(8) (1 p~ 2 ) + 2 p~ cos(8)
F n = 26642.93898 Ib 0ITTl ~ ~ OVe
L Engineeriag 8r. Management Specialists Inc.
Gales for Sump Pump Valve Potential Pressure Locking Effects Calc No. AE-DC-010 Rev. 00 Date 07/12/96 H Safety-Related Cl Non Safety-Related Page l8 of ~l Client AEP Prepared by: Date Project D.C. COOK NUCLEAR STATlON Reviewed by: Date Proj. No. AE402 Approved by: Date Calculate F, from equation 2.7a sin(e) (p~
- 1) + 2 iL~ cos(e) cos(e) :
p w sin(e)
Fn F s = 12602.87169. Ib OTC D = 51233.72916'Ib Operator capability Tp .= 1575 Ib Packing load M3 = Margin based on Degraded voltage (1 7%) actuator torque and p, = 0.20 M3.= OTC D
- Fdt- Tp Fs M 3 14487.61228 Ib RESULTS:
Pressure rise due to heating: dp = 202.60. 26 psi Operator Output Thrust Capability based on the Rated Output Torque and stem COF p = 0.20: OTC= 67003.48 Ib Available margin based on the Rated Output Torque, stem COF p = 0.20 and wedge coefficient of friction p= 0.47: M, = 7643.54 Ib Operator Output Thrust Capability based on the Degraded Voltage (17%) Output Torque, stem COF p = 0.15 and wedge OTCD 61 51 8 87 It) coefficient of friction p= 0.47:
Engineering 8s Management S pecia1ists Inc.
Gales for Sump Pump Valve Potential Pressure Locking EQ'ects Calc No. AE-DC-010 Rev. 00 Date 07/12/96 H Safety-Related Non Safety-Related Page J9 of 2.i Client AEP Prepared by: Date Project D.C. COOK NUCLEAR STATlON Reviewed by: Date Proj. No. AE-002 Approved by: Date Available margin based on the Degraded Voltage (17%) Output Torque, stem COF p = 0.15 and wedge coefficient of friction M2 = 2158.93 Ib p= 0.47:
Pressure rise due to heating: hp = 101. 20 psi Operator Output Thrust Capability based on the Degraded Voltage (17%) Output Torque, stem COF p, = 0.20 and wedge OTCo = 51233.72 Ib coefficient of friction p= 0.47:
Available margin based on the Degraded Voltage (17%) Output Torque, stem COF p = 0.20 and wedge coefficient of friction Ms = 14487.61 Ib p= 0.47:
6.0 REFERENCES
- 1. Telecopy from Ron Farrell (Anchor Darling) to J.K. Bienia (EMS) dated 07/08/96. EMS Document No. CD-AEP-96-357.
- 2. Anchor Darling Report No. R93.186 Rev. - for 18" - Class S70 Stainless Steel Double Disc Gate Valve with SMB-2-60 Limitorque Actuator. EMS Document No. CD-AEP-96-358.
- 3. Not used
- 4. Design Input for the Sump Pump Valve from Greg Nogrady (AEPSC) to Lia Georgopoulos (EMS Inc.) dated 07/12/96. EMS Document No.
CD-AEP-96-371.
Engineering Ec Management Specialists Inc.
Cafes for Sump Pump Valve Potential Pressure Loc1dng EQ'ects Calc No. AE-DC-010 Rev. 00 Date 07/12/96 g Safety-Related Q Non Safety-Related Page 20of 2l Client AEP Prepared by: Date Project D.C. COOK NUCLEARSTATlON Reviewed by: DaCe Proj. No. AE<02 Approved by: Date Not used.
Not used.
Anchor Darling Drawing No. 93-13173, Rev. B. EMS Document No.
CD-AEP-96-361.
"Thermally induced pressure locking of gate valves: A survey of valve bonnet pressurization rates" - Ezekoye and Moore - ASME - PVP Paper - July 1996.
White Paper 139, Basis for using static, as-left stem friction coefficient in design basis calculations, Draft revision 0, June 16, 1994. EMS Document CE-94-158.
- 10. Application Guide for Motor-Operated Valves in Nuclear Power Plants, EPRI, NP-6660-D, Research Project 2814-6, Final Report, March 1990.
Handbook of Chemistry and Physics, Chemical Rubber Publishing Co.,
41st Edition.
- 12. ASME Boiler 8 Pressure Vessel Code,Section III, Div. 1, Appendices, Table l-5.0, 1977.
- 13. NUREG/CR-5807 KEI No. 1721 Improvements in Motor Operated Gate Valve Design and Prediction Models for Nuclear Power Plant Systems.
- 14. Not used.
- 15. Fax from Greg Nogrady (AEPSC) to Lia Georgopoulos (EMS) dated 7/12/96 regarding sump pump calculation. EMS Document No.
CD-AEP-96-362
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Engineering 4 Management Specialists Inc.
Gales for Sump Pump Valve Potential Pressure Locking Effects Calc No. AE-DC-010 Rev. 00 Date 07/12/96 Safety-Related Non Safety-Related Page 2i of 2I H CI Client AEP Prepared by: Date Project D.C. COOK NUCLEAR STATION Reviewed by: Date Proj. No. AE402 Approved by: Date 7.0 ATTACHMENTS A. Fax from Greg Nogrady (AEPSC) to Lia Georgopoulos (EMS) dated 7/12/96 regarding design input data.
EMS Document No. AEP-96-371 B. Telecopy from Ron Farrell (Anchor Darling) to J.K. Bienia (EMS) dated 07/08/96. EMS Document No. CD-AEP-96-357.
C. Anchor Darling Drawing No. 93-13173, Rev. B. EMS Document No.
CD-AEP-96-361.
Computer software, MathCAD 5.0 was used and has been validated by EMS Inc Validation No. CE-Zl-001 Rev. 01.
Global definitions:
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FROM: Greg Nogredy (AaPSC)
TO: Lia Geofgopoutos (EMS fnc.)
You are authorized to use the foifowfng parameters 0fsted below) as design Input for Sump Pump Valve Potential Pmseure Locking Analysis, The analysis fs performed on $ 8" Anchor Darling Double Olsc Gate Vafves, Tag Nos.: 1/2ICM-306 and 1J2ICM-30S.
Temperature change hT ~ 4.4' Packing Load: Tp = $ 675 lb Wed gfng force fram cfosfng stroke: F~ "- 44470 lb Pullout eNcfency ~ 0,4 Overall Gear Ratio ~ 80: 5 Rated voltage = 675 Y Degraded Voltage 477 V Motor start torque ~ 80 ftfb Disc mean seat dfa. ~ 17.38 inch Stem Lead ~2/3 Stern Pitch ~ $ I3 Signed By: Pate: QZL~Q.
TROLLEO DOCUMENT lr Doc. Co f No. P 7F8 Cnnsv7 Calc. No. ~~-D~.->so Hev, o
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ANCHOR DARLENG JUI 08'96 14:47 NO.OBT P.01
>+lA+~$ 84 Msaagemeat SpeoiaHsg )no, for 18" - Class S70 Stainless Steel Double Disc Gate Valve with 8MB-2M Litnitorque Actuator. A/D Assjj. Dwg. No, 93-13173.
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