ML17264A611

Rev 1 to Valve Thrust Calculation for 6x4x6 Class 300# Anchor Darling Gate Valve,857A,B & C & 860A,B,C & D.

ML17264A611
Person / Time
Site:	Ginna
Issue date:	12/23/1993
From:	Bruck P, Pace R, Stuart R ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17264A608	List: ML17264A607 ML17264A610 ML17264A611 ML17264A612 ML17264A613
References
91187-C-06, 91187-C-06-R01, 91187-C-6, 91187-C-6-R1, NUDOCS 9609270300
Download: ML17264A611 (97)

Text

ATTACHMENT2 VALVE THRUST CALCULATIONFOR 6"x4"x6" ANCHOR DARLING GATE VALVE MOV's 867A, B 5. C and 860A, B, C 6 D Calculation No. 91187-C-06 Revision 1 Volume 1 of 1 prepared for:

Rochester Gas and Electric Corporation Ginna Station

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eeAA'wAA&h~~ HA at~w%1%t'vANhl~

>i' Apr>l, 1993

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~ oY f: f4 4 Altran Corporation 200 High Stroot Boston, MA 02110 (617) 330-1130 FAX: (617) 330-1055 9609270300 960924 PDR ADOCK 05000244 P PDR

fl Report Record Document No.: 1187- -0 Rev. No.: 1 No. of Sheets ~2

SUBJECT:

Valve Thrust Calculation for 6"x4"x6" Class 300 Anchor Darlin Gate Valve 857A B & C and 860A B C & D REV. DESCRIPTION: evision 1: Incor orate Valves 860A B C & D Sheets 1-5 7 8 9 11 14 24 and 40 COMPUTER RUNS (identified on Computer File Index): Yes N/A X Error reports evaluated by: Date:

Impacted by error reports: No X Yes (if yes, attach explanation)

Or' )

+~a

~

R Pce R. Stuart DESIGN VERIFICATION: ~ Required X Not quired Performed by: P. Br k D.t'.4 0 Method of design verification: X Design Review e ate Calculations (Attached)

Qualification Test (Data/Results Attd.)

Comments resolved by: N A Date:

Design verifier concurrence: Date:

APPROVED FOR R A PROJECT MANAGER: Dsto:

P. M Bru k ENGINEERING MANAG R: . /Q z'3 issa

Report Record Document No.: 11 7-- Rev. No.: 0 No. of Sheets

SUBJECT:

Valve Thrust Calculation for MOV 857A B & C REV. DESCRIPTION: Revision 0: Ori 'l Issue COMPUTER RUNS (identified on Computer File Index): Yes N/A X Error reports evaluated by: Date:

Impacted by error reports: No X Yes (if yes, attach explanation)

Originator(s) Date Checker(s) Date 3l~/9 w 3/~Iez A. . Oster P. Clement

'ESIGN VERIFICATION: Required X Not Required Performed by: P. Diemen 4i irt Chai~~ Date:

Method of design verification: X Design Review Alternate Calculations (Attached)

Qualification Test (Data/Results Attd.)

Comments resolved by: N A Date:

Design verifier concurrence: Date:

APPROVED FOR RELE PROJECT MANAGER:

P. M. ru ENGINEERING MANAGE Date:~ orb M. A. ~issa

CALCULATION SHEET Sheet: 1

c. No.: 91187-C-06

~ By: R; Pace Date: 4/30/93 Rev.:

~ 1 Chk: R. Stuart Date: 4/30/93 TABLE OF CONTENTS Table of Contents 1 List of Figures List of Tables 3 Analysis Summary Sheet ~ 4 1+0 Introduction 2 ' S ummary ~ ~ ~ ~ ~ ~ 0 ~ 0 ~ ~ ~ ~ ~ ~ ~ ~ ~

3 ' Valve Description 3 ' General 8 3.2 Valve Geometry 8 3 ' Valve Materials 8 4~0 Valve Loading 10 4.1 Seismic Loading 10 4.2 Design Conditions 11 4.3 Operator Torque 11 5 ' Valve Component Evaluation 12 5.1 Methodology 12 5.2 Criteria 12 5.3 Results 14 5.3. 1 Stem ~ ~ ~ 15 5.3.2 Disc Trunnion Pin ~ ~ ~ ~ ~ 22 5.3.3 Stem to Upper Wedge Threads 23 5.3.4 Yoke 24 5.3.5 Bolting 28 5.3.6 Flanges 34 6~0 References 38 7 0 Appendices 41 7~1 Appendix I: Valve Drawing 42 7.2 Appendix II: Field Walkdown Data 44 7.3 Appendix III:

IV:

Limitorque Data Spreadsheet Data 49 56 7.4 Appendix 91187. C06

CALCULATION SHEET Sheet: 2

c. No.: 91187-C-06 By: R. Pace Date: 4/30/93 ev,: 1 Chk: R. Stuart Date: 4/30/93 List of Figures Figure 1. Stem Parameters 16 Figure 2. Yoke/Operator Assembly 25 Figure 3. Operator Bolt Pattern ~ . 29 Figure 4. Yoke Bolt Pattern ~ ~ 31 Figure 5. Bonnet Bolt Pattexn 32 Figuxe 6. Yoke Flange Pattern 35 91187.C06

CALCULATXON SHEET Sheet: 3 lc. No.: 91187-C-06 By: R. Pace Date: 4/30/93 eve ~ 1 Chk: R. Stuart Date: 4/30/93 List of Tables Table 1. Summary of Valve Operating Limits . . . . . . . 7 Table 2. Valve Components and Materials . . . . . . . . . 9 Table .3. Component, Thrust Summary . . . . . . . . . . 14 J

91187.C06

Analysis Summary Sheet Caic. No. 911 7- -0 By: R. Pace Dete:~40 93 Sheet 4 Rev. No. 1 Date:~4~09~

Calculation Subject Valve thrust calculation for MOV 857A, B and C and 860A, B, C, and D. These are 6"x4"x6", 300 lb. Class, gate valves produced by Anchor/Darling Valve Co. with Limitorque SMB-00-7.5 Actuator, and installed in the Residual Heat Removal System of RGGE's Ginna Station.

Objective of Calculation The objective of this calculation is to determine the structural weak link of the valve components and to determine the limiting thrust values based on these components. This calculation is performed to comply with the requirements of NRC Generic Letter 89-10 (GL 89-10) [7].

Calculation Methods and Assumptions The evaluation consists of equating stresses for critical components caused by thrust and torque to the appropriate allowable stress and then solving for the resulting allowable thrust. The valve thrust limits are the minimum of the evaluated thrust for the various components and operating modes.

Design Basis 6 References Stress limits for all valve components are as specified in the appropriate edition of ASME Section III, Subsection NC [5] as specified by the Ginna Station UFSAR [1]. Non pressure boundary components are qualified to the requirements of ASME Code Case N-62

[6] ~

Brackets, "[ ]", indicate references identified in Section ~ of this document.

Conclusions The resulting valve thrust limits are: 9,027 lbs. closing 9,027 lbs. opening 23,794 lbs. backseating 91187. C06

ALTRAN CALCULATION SHEET Sheet: 5 lc. No.: 91187-C-06 By: R. Pace Date: 4/30/93 ev e 1 Chk: R. Stuart Date: 4/30/93 1.0 Introduction The purpose of the NRC Generic Letter 89-10 (GL 89-10) is to ensure that the switch settings of safety related [7]'rogram motor operated valves are selected, set, and maintained correctly to accommodate the maximum differential pressure expected across the valves during normal and abnormal design basis events throughout the life of the plant.

In order to comply with the requirements of GL 89-10, the thrust limit for the weak link valve components must be known for each safety related motor operated valve. As part of the Ginna Station motor operated valve refurbishment effort, each valve in the GL 89-10 program must have its weak link components identified and the corresponding thrust limits calculated. A minimum thrust is required to operate the valve under design conditions. A maximum thrust limit must be specified based on the structural capacity of the valve components. This thrust, along with the minimum required thrust, will provide a working range for the valve. Appropriate torque, switch settings and periodic testing will ensure that the valve thrust does not drift outside of this working range.

The thrust limits for valves 857A, B and C and 860A, B, C, and D have been determined by Altran as follows:

1: Data Collection In order to obtain critical 4

dimensions, material identification, and stress data the following steps were performed:

[g] denotes reference number found in Section 6.0 91187.C06 I

ALTRAN CALCULATXON SHEET Sheet: 6 alc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 Review of vendor drawings Review of other RGGE records and existing valve calculations as available.

2. Identify Structural Weak Link Calculations were performed to identify the structural weak link among components which are exposed to thrust loadings.

These included the valve stem, bolts, disk, yoke, and other components which may or may not be part of the pressure boundary, but are affected by thrust loads. As appropriate, pressure, seismic, and deadweight stresses were included in the evaluation of valve components.

3. Calculate Thrust Limit A maximum thrust load limit for the valve was calculated.

Details for the above tasks are summarized in the following sections of this calculation.

ALTRAN CALCULATION SHEET Sheet: 7 lc. No.: 91187-C-06 By: R. Pace Date: 4/30/93 ev 1 Chk: R. Stuart Date: 4/30/93 2.. 0 Summary The stresses calculated for valves 857A, B and C and 860A, B, C, and D have been compared to the criteria of ASME Section IIX, Subsection NC [5] for Class 2 valves. The items which are not part of the pressure boundary are not covered by ASME Section IIX.

These items are compared to the criteria of ASME Code Case N-62

[6) ~

Based on the above evaluation, the location and magnitude of the limiting thrusts are identified below. Although a limit is specified for backseating, this is not considered a normal event.

Backseating of the valve is not recommended.

Table 1.

Summary of Valve Operating Limits DIRECTION LIMITING COMPONENT ALLOWABLE THRUST (LBS)

CLOSING (CLOSING) DXSC TRUNNION PIN 9,027 OPENING (OPENING) DISC TRUNNION PIN 9,027 BACKSEATING BONNET BUSHING 23,794 Valve: 6"x4"x6" 3001 Class Anchor Darling Gate Valve Tag: MOV-857A, B & C and 860A, B, C & D Actuator: Limitoruqe SMB-00-7.5 91187.C06

ALTRAN CALCULATION SHEET Sheet: 8 lc. No.: 91187-C-06 By: R. Pace Date: 4/30/93

'ev 1 Chk: R. Stuart Date: 4/30/93 3.0 Valve Description 3.1 General The valve presented in this calculation is a 6"x4"x6",

300 lb. Class, gate valve produced by Anchor Darling Valve and Manufacturing Company. The valve field tag numbers are 857A and 860A, B, C, and D.

3.2 Valve Geometry The valve is shown on Darling drawing number 11497, Rev.

C. This drawing is presented in Appendix 7.1.

3.3 Valve Materials The valve components affected by the thrust, seismicf deadweight, and pressure loads are dealt with individually in Section 5. The materials, allowable stress values, and the sources for these values for each component are listed below in Table 2.

911ST.C06

CALCULATION SHEET Sheet: 9 lc. No.: 91187-C-06 By: R. Pace Date: 4/30/93 Rev 1 Chk: R. Stuart Date: 4/30/93 Table 2.

Valve Components and Materials VALVE 857A, B, C 860A, B, C & D MANUFACTURER ANCHOR/DARLING DRAWING NO. 11497, Rev. C ITEM S Sy E NOTES (KSI) (KSI) (10 ps i)

BODY/BONNET A351 GR CF8M 16.95 21.4 YOKE A216-WCB 17.5 30.8 DISC A182-F316 16.95 UPPER WEDGE A351-CF8M 16.95 21.4 STEM 17-4-PH 56.9 106.9 28. 0 1i3i4 (

(SA564-630-1100)

OPERATOR BOLTS A193 GR B7 25 '

YOKE AND A193 GR B7 25.0 BONNET BOLTS BACKSEAT A276 TP316 35. 15 84.3 1f3 (STELLITE)

NOTES:

Components'SME Section III [5] Class 2 allowable stress (S), and yield strength (Sy), and modulus of elasticity (E) corresponding to operating temperature, T= 350 F.

2. Allowable corresponding to T b, = 104'F, same as for T =

350 F.

3. Stem allowable stresses derived from ASME Code Case N-62 (6) .

4 ~ Above values taken from Anchor/Darling valve calculation

[20].

91187.006

ALTRAN CALCULATXON SHEET Sheet: 10 alc. No.: 91187-C-06

~ By: A.J. Oster Date: 3/02/92 Rev.:

~ 0 Chk: P. Clement Date: 3/02/92 4.0 Valve Loading 4.1 Seismic Loading As required by the Ginna UFSAR [1], safety related valves must, be qualified for seismic loading. As it is likely that these valves may be operated during such an event, the seismic loads on the affected external structural components of the valves are added to the loads produced from the valve thrust loads from operation. Therefore deadweight and seismic loads are included in the evaluation of structural components such as the yoke, operator, bolts, etc. The weight of the operator is significantly greater than the weight of the valve parts affected by this calculation and therefore, only the weight of the operator is included.

Conversely, the magnitude of the deadweight and seismic loads on the valve internals is negligible in relation to the thrust and pressure loads, and therefore are not considered in the evaluation of internal components such as the disk, seat, stem, etc.

Under the Ginna Station Seismic Upgrade Program (EWR-2515) 12], all valves require a seismic qualification at 2.1g horizontal and vertical loading unless otherwise specified in the pipe stress evaluation. The valve included in this calculation was reviewed and determined to be bounded by these accelerations. Therefore, a uniform seismic acceleration of 2.1 g s in all directions was conservatively applied.

For these calculations the valve stem was conservatively assumed to be oriented in the horizontal direction, therefore

CALCULATION SHEET Sheet: 11 lc. No.: 91187-C-06

~ By: R. Pace Date: 4/30/93

'ev '

~ Chk: R. Stuart Date: 4/30/93 producing maximum bending moments for deadweight and seismic loads.

4.2 Design Conditions The design conditions for this valve were derived from a review of isometric Drawing Number C-381-354, Sheet 10, Rev.

2 and C-381-359, Sheet 9, Rev. 2 [4]. The operating conditions were derived form a review of Seismic Upgrading Program Operating Transients Document for Residual Heat Removal Fluid Line No. 4 [2]. The operating conditions are derived from the maximum of all operating conditions and include normal, upset, emergency and faulted events. The design and operating conditions are as follows:

DESIGN OPERATING Temperature ('F) 400 350 Pressure (psig) 600 600 4.3 Operator Torque The maximum torque produced by the Limitorque 5MB-00-7.5 operator installed on valves 857A, B & C and 860A, B, C & D is 250 ft-lbs. [11]. The shear and bending stress produced in the yoke and body by this torque load is negligible, and will therefore not be included in this calculation.

9'1187.C06

e CALCULATION SHEET Sheet: 12 lc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92

.ev.: 0 Chk: P. Clement Date: 3/02/92 5.0 Valve Component Evaluation 5.1 Methodology The evaluation consists of equating stresses for critical components caused by thrust and torque to the appropriate allowable stress and then solving for the resulting allowable thrust.

This evaluation was initially performed in a vendor calculation [20] using yield strength as a criteria and including pressure loads only. This calculation was then modified to use ASME section III criteria and to include seismic loading.

The yoke, bonnet bolts, and operator hold down bolts are recalculated to include seismic loads. The calculation for these components were performed using simplifying assumptions.

As these calculations were similar for corresponding parts of different valves, the calculations were automated using the spreadsheet program QUATTRO PRO [16]. The spreadsheets are designed to present important input variables, and calculate stresses and allowable thrusts. A printout of each spreadsheet is included in Appendix IV.

The remaining components'alculations were modified to include the appropriate ASME Section III allowable stress by factoring the results from the yield strength analysis.

5.2 Criteria Stress limits for all valve components are as specified in the appropriate edition of ASME Section III, Subsection NC

ALTRAN CALCULATION SHEET Sheet: 13 lc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92

.<ev.: 0 Chk: P. Clement, Date: 3/02/92 as specified by the Ginna Station UFSAR [1]. Non-pressure boundary components are not explicitly addressed in the code and will be qualified to the requirements of ASME Code Case N-62 [6] for applicable materials.

Comparison of ASME Code Case N-62 [6] criteria with ASME Section III, Table NC-3521-1 [5] criteria indicates that it is appropriate to use Table NC-3521-1 criteria for both pressure retaining and non-pressure retaining components.

The Level A service limits of Table NC-3521-2-1 are used'o evaluate non-seismic loading conditions for the components evaluated. The Level D limits are used to evaluate loading conditions which include seismic loads.

The resulting criteria to be satisfied are:

Non-Seismic Seismic Membrane Stress 1. OS 2.0S Membrane + Bending Stress 1.5S 2.4S Shear Stress will be limited to 0.6S.

Bearing Stress will be limited to Sy.

The thrust limit for the valve will be the minimum thrust for all components as determined from the above criteria.

The thrust limit for backseating of the stem with the, bonnet backseat (stellite region) is limited to the stem yield stress assuming a 1/16" wide strip at the stem outside diameter.

J ALTRAN CALCULATION SHEET Sheet: 14 lc. No.: 91187-C-06 By: R. Pace Date: 4/30/93 Cev. ' Chk: R. Stuart Date: 4/30/93 5.3 Results The equations and thrust limits for the critical components are shown in the following sections. The general development of the equations is shown, and the application of the equations in the QUATTRO PRO program is in Appendix IV.

The results of the individual component, loads are summarized in Table 3 below.

Table 3.

Component Thrust Summary COMPONENT THRUST (LBS) THRUST (LBS)

CLOSING OPENING STEM STRESS 48,522 48,522 STEM BUCKLING 101,764 BACKSEAT 23,794 STEM TO UPPER WEDGE 34,164 DISC TRUNNION PIN 9.i 027 9,027 YOKE (0

( QQOO YOKE BOLTS 10,297 YOKE FLANGE 17,798 OPERATOR BOLTS 21i 678 BONNET BOLTS 32,533 Valve: 6"x4"x6" 300/ Class Anchor Darling Gate Valve Tag: MOV-857A, B, & C and 860A, B, C 6 D Actuator: Limitorque SMB-00-7.5 91187.C06

ALTRAN CALCULATION SHEET Sheet: 15 alc. No.:

~ 91187-C-06 By: A.J. Oster Date: 3/02/92 Rev.:

~ 0 Chk: P. Clement Date: 3/02/92 5.3.1 Stem The stem allowable thrust values are based on the thrust required to produce stresses that exceed the allowables by several different mechanisms; buckling, tensile/compressive stress, and stress intensity or'rincipal stress. The axial and principal stress modes are based on the axial load and a combination of the axial and torsional loads acting over the minimum stem. stress area located at the minor diameter of the stem drive threads. Buckling is based on instability of the stem and is a function of the length of the stem and the radius of gyration derived from the full stem diameter.

The stem evaluation considers the maximum allowed thrust based on stem stress (opening and closing) and stem buckling (closing). Stem backseating thrust is also calculated as part of the stem evaluation.

5.3.1.1 Stem Stress Thrust Limit The maximum allowed stem thrust. is determined by equating the stem maximum axial stress to the ASME allowable stress of 1.0S for membrane stress, and equating the maximum principal stress to the ASME allowable stress of 1.5S for membrane and bending stress. The maximum principal stress is composed of an axial stress term and torsional shear produced by the operator torque. The stem stress thrust limit will be the minimum .of the thrust limits calculated for axial and principal stresses.

CALCULATION SHEET Sheet: 16 alc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 D~a D MiNoa

= Total length of st.em Dsrm = Stem Diameter at packing gland DmsoR = Maximum Diameter of stem thread DumoR = Minimum Diameter D arm, of stem thread WB

= Stem Thread Pitch

= 1/(Number of Stem threads per inch)

Width of Backseat VALVE STEM Lead = Stem Thread Lead

p* (number of thread starts)

(Appendix III)

Figure 1.

Stem Parameters

ALTRAN CALCULATION SHEET Sheet: 17 alc. No.: 91187-C-06 By: A.Z. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 Stem Axial Stress S g Where: T Stem Thrust (lbs)

AiRPAD Stem Thread Stress Area =

(DhoNoR) (in )

4 DumoR Stem Thread Minor Diameter =

DuraoR p ( in)

(29'cme General Purpose, Table 11, Page 8-18) [19]

DmvoR Stem Thread Major Diameter (in)

P Stem Thread Pitch (in)

The maximum allowed stem thrust, based on axial stress is found by equating the axial stress to the ASME allowable stress of 1.0S and solving for t:

= 1.0S Terna.sos 1 ~ 0S

• Anent Stem Shear Stress SJ QDezmR v 2J Where: Q Torque Required to Produce Thrust.

12 FS*T (in-lb)

FS Stem Factor (in-lb/lb)

(Refer to Appendix III [14])

Stem Polar Moment of Inertia =

(DhGNOR)

' in' 32

ALTRAN CALCULATION SHEET Sheet: 18 alc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 Stem Princi al Stress PS 2

SS= 2

"+ " 2

+ (S)2 V

Substituting S and S from above:

12FS T DrazoR PS= +

2~27amu The maximum allowed stem thrust based on principal stress is found by equating the principal stress to the ASME allowable of 1.5S and solving for T:

T + T + enroR 2>natu

1. SS PRZNCZPAL STRZSS 5.3.1.2 Stem Buckling Thrust Limit The stem buckling thrust is determined by equating the stem axial stress to the critical buckling stress given by the Johnson Equation for short columns (Table 13, Page 5-43 [19]).

This equation considers the stem as a free standing bar and results in loads which are less than would be predicted by the Euler Equation for long columns.

l' CALCULATXON SHEET Sheet: 19 lc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92

'The Johnson Equation applies to short columns where:

Where: Sy Minimum yield strength (lb/in~)

Radius of Gyration =

D~/4 (in)

C Stem End Condition Constant =

1.2 (Table C1.8.1, Page 5-124)[17)

Modulus of Elasticity (lb/in~)

The maximum allowed stem thrust based on buckling is found by equating the stem axial stress to the critical buckling stress and solving for T:

A~ = Stem Stress Area =

4 (D~~)'in~)

ALTRAN CALCULATION SHEET Sheet: 20 lc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 L

A~ =Sy 1-T K 4Crt2E SV As' '4j'irvatxrmr 4 Cn'Z For stem lengths where:

2CR Z S

The critical load calculated in the Anchor/Darling calculation [20], based on the Rankine formula and on the ultimate strength of the stem is 118,200 lbs.

The Johnson Equation indicates a lower and more conservative buckling load of 101,764 lbs.

5.3.1.3 Stem Backseating Thrust Limit The stem backseat is assumed to be a small strip at the outside diameter of the stem. The stem backseating thrust limit is defined as the stem thrust at which the bonnet (or bonnet bushing) and/or the stem backseat surfaces will exceed an allowable stress. The maximum allowed stem thrust is determined by equating the bearing stress in the backseat surfaces to the ASME allowable stress of S for bearing stress.

CALCULATION SHEET Sheet: 21 lc. No.: 91187-C-06 By: A.Z. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92

= T BACKSEAT Where: T Stem Thrust (lbs)

A Annulus Area of Backseat =

n (D~ + WB) WB (in~)

WB Width of Backseat, (in)

Dsrm Stem Diameter (in)

The maximum stem thrust based on bearing stress is found by equating the backseat bearing stress to the allowable limit of S and solving for T:

BhcKSEATNO

= y + (DstuM + WB) WB

ALTRAN CALCULATION SHEET Sheet.: 22

'Calc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 . Chk: P. Clement. Date: 3/02/92 5.3.2 Disc Trunnion Pin The maximum allowed thrust for the disc trunnion pin is determined from previous calculations [20] by factoring the allowable thrust based on 0.577, x yield strength by the ratio of 0.60 x ASME Section III allowable stress to 0.577 x yield strength. This produces a lower and more conservative allowable thrust.

thrust based on 0.577 yield stress = 10,960 lbs yield strength ='1.4 ksi Sect III allowable stress 16 '5 ksi (10,960 Ebs) x (

' ) = 9,027 lbs i 0.577 >C 21 4I

~

CALCULATION SHEET Sheet: 23 lc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92

.ev.: 0 Chk: P. Clement Date: 3/02/92 5.3.3 Stem to Upper Wedge Threads The maximum allowed thrust for the stem to upper wedge threads is determined from previous calculations [20] by factoring the allowable thrust based on 0.577 x yield strength by the ratio of 0.60 x ASME Section III allowable stress to 0,577 x yield strength. This produces a lower and more conservative allowable thrust.

thrust based on 0.577 yield stress = 41,480 lbs yield strength 21. 4 ksi Sect III allowable stress 16.95 ksi (41, 480 1bs) x (

' ' = 34, 1642bs i 0.577 x 21.4I

0 CALCULATION SHEET Sheet: 24 lc . No ~. : 9 1187-C-0 6 By: P. ~ Po.cc. Date:

ev.:

~ caw: I SfuaA Date:

5.3.4 Yoke ( ge.-esse,ssg lv 'kg. ~ ~) .

The maximum allowed thrust for the yoke legs is determined by equating the maximum principal stress with the allowable stresses of Section A-A as shown in Figure 2 below.

For this calculation the valve yoke is assumed to be horizontal and consequently bending moments due to deadweight and seismic accelerations of the Limitorque operator are maximized. The moment arm is the distance from the minimum cross section at the base of the yoke to the operator center of gravity.

The total operator weight is assumed to be at the stem center line and concentrated at a distance from the flange of one-half the unit height. One inch is added to this value to account for the flange thickness.

CALCULATION SHEET Sheet: 25 alc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 12 I

I I

2 R X SECT I ON A- A Figure 2.

Yoke/Operator Assembly A = Cross Sectional Area of one Yoke Leg (in~)

R = Distance from valve centerline to yoke leg centerline (in)

I,, Moment of Inertia about 1-1 axis (in4)

=

T = Yoke Thrust (lbs)

W = Operator Weight (lbs)

S = Yoke Allowable Stress (psi)

L =. Moment Arm (in)

X = Distance from valve Centerline to Yoke Leg (in)

The moment about 1-1 axis produces a linear stress distribution across section and will be considered a bending stress (S~) per paragraph NC-3522 [5]. The moment about 2-2

ALTRAN CALCULATION SHEET Sheet: 26 alc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 4

axis will be treated as a force couple with stress considered a membrane stress (S,) per paragraph NC-3522 [5].

1. Normal Condition: Thrust + Deadweight Membrane (T~)

1.0S BV 2A s

T~ = 2A(1.0S)

Membrane G Bending (T~)

2A

+ SLC 7

c 1.5S 2 ~ Faulted Condition: Thrust + Deadweight + Seismic G>, G2, and G3 are seismic accelerations along the 1, 2, and 3 axes respectively. Axis 2 is in the vertical direction.

Membrane (T~)

T~

FK +

GqÃZ 1 + G~3 V

2A

~ 2 0S 2RA 2A T~ = 2A 2.0S G~NL 2RA G3 V 2A

ALTRAN CALCULATXON SHEET Sheet: 27 lc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 Membrane & Bending (T~)

T~ +

GqNL

+

GqV + (Gq + 1.0) VIC s 2.4S 2A 2RA 2A 1-1 T =2A 2.4S G VI (G +1 0)

VLC G~ V

CALCULATION SHEET Sheet: 28 alc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 5.3.5 Bolting The studs used to connect the operator to yoke (operator bolts), yoke to bonnet (yoke bolts), and bonnet to body (bonnet bolts) are analyzed in the following sub-sections.

I The total operator weight is assumed to be at the stem center line and concentrated at a distance from the flange of one-half the, unit height.

5.3.5.1 Operator Bolts 4

The maximum allowed thrust for bolts which attach the operator to the yoke mounting flange is determined by equating the allowable stress to the maximum membrane tensile stress produced by thrust and bending moments due to deadweight and seismic accelerations of the Limitorque operator.

ALTRAN CALCULATION SHEET Sheet: 29 alc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 2

I I I

L2 Figure 3.

Operator Bolt Pattern Operator Weight (lbs)

L Moment Arm (in)

Bolt Stress Area (in~)

L1, L2 Bolt Spacing (in)

1. Normal Condition: Thrust + Deadweight

>ay +

4' AK A~ ~ 1.0S T~=4A 1.0S AK 2A~L~ j

ALTRAN CALCULATION SHEET Sheet: 30 alc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92

2. Faulted Condition: Thrust + Deadweight + Seismic G Gz, and G3 are seismic accelerations along the 1, 2, and 3 axes respectively. Axis 2 is in the vertical direction.

T~ G~WL (G2 + 1.0) WL G3W 42 4'A+~

+ +

2Ag,L~

+ 3 4Ag OS

- G~VL ppZ, G3 V T~ = 4A~ 2 OS

~ (G2 + 1. 0) 2A+~ 2AgL2 4')

ALTRAN CALCULATION SHEET Sheet;: 31 alc. No.: 91187-C-06 By: A.Z. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 5.3.5.2 Yoke Bolts The maximum allowed thrust for bolts which attach the yoke to the valve body is determined by equating the allowable stress to the maximum membrane tensile stress produced by thrust and bending. moments due to deadweight and seismic accelerations of the Limitorque operator. The loads and reaction equations are the same as those developed above in Section 5.3.5.1.

L2 Figure 4.

Yoke Bolt Pattern W Operator Weight (lbs)

L Moment Arm (in)

Ab Bolt Stress Area (in~)

L1, L2 Bolt Spacing (in)

CALCULATION SHEET Sheet: 32 alc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 5.3.5.3 Bonnet Bolts The maximum allowed thrust for bolts which attach the bonnet to the valve body is determined by equating the allowable stress to the maximum membrane tensile stress produced by thrust and'bending moments due to deadweight and seismic accelerations of the Limitorque operator. The loads and reaction equations are:

2 Fi I I 3 Fi 1 0 BOLT PATTERN SHOWN ~

TYP I GAL FOR OTHER QUANT IT I ES OF BOLTS ~

Figure 5.

Bonnet Bolt Pattern Operator Weight (lbs)

L Moment Arm (in)

Bolt Stress Area (in) d Bolt Circle Diameter N Number of Bolts F Constant based on the Number of Bolts P Maximum Operating Pressure (psi)

D() Bonnet to Body Gasket Mean Diameter (in)

ALTRAN CALCULATION SHEET Sheet: 33 lc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 (1 COS 8) 1 (1 COSe) 2 ZF;xY; M = Fb dFg

1. Normal Condition: Pressure + Thrust + Deadweight P

<Dc2 4 NAb

+ >zg +

NAb AK 5 dFbAb 1.0S T~ = NAb 1. OS 4

PDg dFbAb

2. Faulted Condition: Pressure + Thrust + Deadweight + Seismic G<< Gz, and G3 are seismic accelerations along the 1, 2, and 3 axes respectively. Axis 2 is in the vertical direction.

P mDg 4NAb

+ T~'+

NAb G~AK

~

dFbAb

+ (G2+1.0) ~

dF+b

+ G3V NAb 42.0S T~ = ÃAp 2.0S dFjjl~

(82 + 1.0) de>>

NAy 4

PDg

ALTRAN CALCULATION SHEET Sheet: 34 lc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P.. Clement Date: 3/02/92 5.3. 6 Flanges The vendor calculation [20] evaluates the yoke flange and the operator mounting flange for normal operating conditions.

The yoke flange is a double slab flange type with four bolts compared to a circular flange with four bolts for the operator mounting flange. The moment arm to the operator center line is larger and the width of action smaller for the yoke flange.

Therefore, the yoke flange is limiting, as confirmed by the vendor calculation, so that the operator mounting flange need not be evaluated further.

The combined bending and shear stress is calculated for the yoke mounting flange and equated to 1.5S for normal conditions and to 2.4S for faulted conditions.

5.3.6.1 Yoke Flange Analysis The following stress equations apply to a quadrant of the double slab yoke flange, shown Figure 6, and are based on the analysis and parameters from the Anchor/Darling valve calculation [20].

CALCULATXON SHEET Sheet: 35 lc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 2

I I

I I

I L2 w I W

3

.0 Figure 6.

Yoke Flange Pattern Bolt tension due to applied loads lbs.

Moment arm bolt to yoke leg, (as shown in Figure 6) = 0.625 in.

Width of flange = 2.75 in.

Flange thickness = 0.625 in.

Weight of Operator = 305 lbs.

L = Moment Arm Operator Center Line to Flange

= 9.5 in.

L2 = Bolt Spacing in Axis 2 Direction = 2.0 in.

L, = Bolt Spacing in Axis 1 Direction = 7.25 in.

ALTRAN CALCULATION SHEET Sheet: 36 lc. No.: 91187-C-06 By: A.Z. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement. Date: 3/02/92

1. Bending Stress (S~)

SB 4M Where M = 22 T~

w S~ = 81 wt~ Tg

2. Shear Stress (S3) 2 Ss T~

wt

=

41 S~

3 ~ Combined Stress (S~)

S~ = (Sg + 3Sgj

= ZjS~

CALCULATION SHEET Sheet: 37 alc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92

4. Allowable Thrust for Normal Conditions (TNP)

Sc 1'5S = KiSa S 1. 5S 8l Tm + AE K ~t2 4 2L2

1. 5wt~S 28K 2K l 1.5 x 2.75 x 0.6252 x 17,500 2 x 305 x 9.5 2 x 1.090 x 0.625 2.0 T~ = 17,798 lbs.

5. Allowable Thrust for Faulted Conditions (T~)

S, = 2.4S = KqS~

2.4S 8l T>> G~WL (1 + G2) WL GqV Ki ~t~ 4 2L, 2L, 4 For seismic accelerations, G, = G> = G3 = 2.1 g 2.4wt S 6.28K 2Kil, 4.2NZ Li L 2 ~ 4M o75~ 625 %17 < 500 4 ~ 2%305~ '5 ~ 6 ~ 2MOSM 5 2 1~305 2 x'.09x0.625 7.25 2.0 T>> = 21,812 lbs.

ALTRAN CALCULATION SHEET Sheet: 38 alc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 6.0 References

1. Rochester Gas and Electric Corporation, Ginna Station Updated Final Safety Analysis Report.

2. Rochester Gas and Electric Corporation, Engineering Work Request (EWR) 2512, "Design Criteria Ginna Station Seismic Upgrade Program", Revision 5, April 11, 1989.

3. Altran Corporation, Project No. 90170, Project Instruction No. 2, "Motor Operated Valve Thrust Limits (Weak Link Analysis) ", Rev. 1, May 17, 1991.

4. Rochester Gas and Electric Corporation, Seismic Upgrade (EWR-2512) Isometric Drawing No. C-381-354, Sheet 10, Rev. 2 and C-381-359, Sheet 9, Rev. 2.

5. American Society of Mechanical Engineers, Boiler and Pressure Vessel Code, Section III, Subsection NC, Class 2 Components, and Appendices, 1977.

6. American Society of Mechanical Engineers, Cases of ASME Boiler and Pressure Vessel Code, Case N-62-5, "Internal and External Valve Items Section III, Division 1, Classes 1, 2, and 3" Approval Date July 24, 1989.

7. Nuclear Regulatory Commission, Generic Letter 89-10.

8. American Society of Mechanical Engineers, ANSI B16.34-1981, "Valves Flanged and Buttwelding End", Date of Issuance: December 31, 1981.

9. Limitorque Corporation, Limitorgue Selection Guidelines, SEL-1, "Gate and Globe Valve Selection Procedure", May 21/ 1979.

ALTRAN CALCULATION SHEET Sheet: 39

'Calc. No.: 91187-C-06

~

By: A.J. Oster Date: 3/02/92 Rev.:

~ 0 Chk: P. Clement Date: 3/02/92

10. Limitorque Corporation, Limitorque Selection Guidelines, SEL-3, "Gate and Globe Valve Operator Selection Procedure", May 21, 1979.

11. Limitorque Corporation, Limitorque Selection Guidelines, SEL-9, "Limitorque Rating Sheet SMB/HMB Design", June 25, 1975.

12. Limitorque Corporation, Limitorque Selection Guidelines, SEL-10, "Stem Factor (FS)", May 21, 1979.

13. Limitorque Corporation, Limitorque Selection Guidelines, SEL-16, "Approximate Weights", October 17, 1977.

14. Limitorque Corporation, Limitorque Selection Guidelines, SC-9000, SC-9001, SC-9002, "Valve Stem Factors (FS) ",

1/84.

15. Limitorque Corporation, Bulletin 871, "Type SMB Valve Controls", August 1983.

16. Borland International, Inc., Quattro Pro, Version 2.0, 1990.

17. American Institute of Steel Construction, Inc., "Manual of Steel Construction", Eighth Edition, 1980.

18. R. Roark and W. Young, "Formulas for Stress and Strain",

Fifth Edition, McGraw-Hill, 1975.

19. T. Baumeister, E. Avallone, and T. Baumeister III, "Marks'tandard Handbook for Mechanical Engineers",

Eighth Edition, McGraw-Hill, 1978.

lc. No.: 91187-C-06 ay: R. Pa~trna'heet:

CALCULATION SHEET Date:

40 ev.: R. S Date: 4-3O 't>

20. Anchor/Darling Valve Company, "Maximum Allowed Thrust Analysis Report" Log No. R92.031, Rev.,0, 1/23/92.

L\0rae, La(c. JJD. q4~~-Zg. oS k~. o ~(o4

@au~(igu<i~", g~, ) qq p

ALTRAN CALCULATXON SHEET Sheet: 41 ale. No.: 91187-C-06 By: A.Z. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement, Date: 3/02/92 7.0 Appendices

ALTRAN CALCULATION SHEET Sheet: gZ

c. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.:. 0 Chk: P. Clement Date: 3/02/92 7.1 Appendix I: Valve Drawing

SEP 248$

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CALCULATION SHEET Sheet:

ale. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 7.2 Appendix II: Field Walkdown Data

ALTRAN $ HEET.

CAI.C q I Ig 7 O rIO Oy CKO

~~ OATE OATE REV MOTOR OI'ERATOR YOKE. LEG CROSS-SECTION 1

L I MI TORQUE .MODEL NO. SECTION A-A TEE SECT ION B I- OIMENSIQNS VALVE RECTANGVi AR OIMENSrONS G UPPER 80LTJNG g AI-

.-. z/s 19'Q Olb: ~/+g OTY: 0 VALVE STEM THREAD YOKE LEG HEJGHI DIA: 1.375 OTHER OIMENS IOr 6 (DRAW SKETCH)

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v=zl LOGIER BOLTJNG VALVE lid'i7 otic pgb:

la'4 ~

VALVE TAG NO.

NOTE:

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K=A dW O.- u Ae~ ar uW <4 F'rELO OIMENS ION TAKEN BY:.

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SEC T I ON A-A TEE DIMENSIONS SECT I ON B I 0

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VALYE, OTY.

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~

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0 ORIGINAL INITIAL A Jv3 2/22/90 JEB 2/22/90 JCM 2/22/90 OATS NUMBER RL'V I S I QN nRASN BY RESP.LNG yNG.VGR.

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0 CALCULATION SHEET Sheet: +f lc. No.: 91187-C-06 By: A.J. Oster Date: 3/02/92 ev.: 0 Chk: P. Clement Date: 3/02/92 7.3 Appendix III: Limitorque I Data

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ALTRA STREET 5'S LIMXTORQUE CORPORATION Lynchburg, Virginia CALC o QI(87-C-oc Rm o BY DATE CKD OATE AP P ROXXMATE*

WEXGHTS WEIGHT w/ WEIGHT w/

SIZE 1800 RPM SIZE 1800 RPM SMBOOO-2 & 5 (2T)** 1150 SMB3-40 9354 SMBOOO-2 g 5 (4T)** 135N . SMB3-60 9604 SMB3-'80 10Ooe SMBOO-10*** 1854'900 SMB3-100 11000 SMBOO-15*+* SMB3-150 12005 SMBOO-25>+* 2005 SiMBO-10 2904 SMB4T-100 12850 SMBO>> 15 3005 SMB 4T- 15 0 1325 N SMBO-25 3200 SMB4T-200 '1400 0 SMBO-40 350 a~ SMB4T-250 14700 (For SMB4, add 440$ to above)

SMB1-15 3904 SMBl-25 4005 SMB1-40 4304 SMBST-100 27600 SMB1-60 4604 SMBST-150 28350 SMBST-200 29100 2-25 5104 SMB5T-250 30000 2-40 5350 SMBST-300 31104

~MB2-60 5650 SMB5T-350 32300 SMB2-80 5804 SMB5T-400 33754 (For SMB5, add 8505 to above)

(For SMBSTX, add 25004 to above)

• • Add 400 for integral (biased) cover

• • ~Add 250 for side mounted handwheel

• • • Add 804 for integral cover (min.-max.+30)

HBC - MANUAL OPERATOR WEIGHTS HOBC 654 HlBC 1200 H2BC 1500 H3BC 2300 H4BC 4200 HSBC 5600 *CAUTION:

H6BC 13004 H7BC 21000 Unit weights on this chart are approximate for standard unit with 86 ' Spur 35N standard motor. Addition of 12:1 Spur 755 optional equipment can increase

.9:1 Spur 2800 standard unit weight considerably.

'AWWA Input 304 SEL- 16

ALTRAN CALCULATION SHEET Sheet: 5'6 ale. No.: 91187-C-06

~

By: A.J. Oster Date: 3/02/92 Rev.:

~ 0 Chk: P. Clement Date: 3/02/92 7.4 Appendix IV: Spreadsheet Data

0

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ALTRAN CALCULATiONSHEET Sheet:

Calo No: 91187-C-06 By: Date:~S~/VX.

Rev: C> Chk: Date: 3 (i/<Z Stem Thrust Calculations Valve Number(s): 857A,857B,857C 860 4 -3l Stem Buckling Thrust Limit- Johnson Equation Stem Radius of Gyration, Inches K = Dstem/4 K= 0.3438 Stem Area, Square Inches Astcm = pi(Dstcm) 2/4 Astern= 1.4849 Maximum Length for Johnson Equation, Inches Max L= 27.076 Max L = K SQRT(2Cpi 2E/Sys)

Stem Thrust Limited by Stem Buckling, Pounds Tbuck= 101,764 Tbuckling = Sys Astern(1-Sys(L/K) 2)/(4Cpi 2E))

Stem Buckling Thrust Limit- Euler Equation Stem Thrust Limited by Stem Buckling, Pounds Tbuck= 110,569 Tbuckling = Cpi 2EAstem/(L/K) 2 This stem is 4.136 inches shorter than the maximum length specified for use with the Johnson Equation. A comparison indicates that the Johnson Equation yields a more conservative thrust limit than the Euler Equation. The Johnson Equation thrust limitwillbe used for this calculation.

Stem Backseat Thrust Limit Area of Stem Backseat, Square Inches Abs = pi(Dstem + WB)WB Abs= 0.2823 Stem Thrust Limited by Stem Backseat Yielding, Pounds Tback= 23,794 Tbackseat = Symin(Sys, Syb) Abs

ALTRAN CALCULATIONSHEET Sheet:

Calc No: 91187-C-06 By: Date:~3~/5~

Rev: Chit:

Yoke Leg Calculations Input Parameters for Valve Number(s): 857A, 857B, 857C i 840 Yoke Leg Width, Inches B= 2.250 Yoke Leg Thickness, Inches H= 0.510 Yoke Leg Rib Width, Inches E= 0.000 Yoke Lcg Rib Thickness, Inches D= 0.000 Yoke Leg Minimum Distance from Stem Centerline, Inches X= 3.844 Height of Yoke Legs, Inches '.875 Yoke Material Allowable Stress, psi 17,500 Size of Limitorque Operator SMB-00 Weight of Limitorque Operator, Pounds W= 305 Height of Limitorque Operator, Inches Height= 10.000 Thickness of Operator Mounting Faang, Inches Thick= 0.625 Seismic Acceleration Along Axis 1 G1= 2.10 Seismic Acceleration Along Axis 2 G2= 2.10 Seismic Acceleration Along Axis 3 G3= 2.10 Geometric Properties Moment Arm, Inches L = Leg Height + Operator Height/2 + Thickness 9.500 Area of Yoke Leg, Sqinches A = B'H+ E'D A= 1.1475 Yoke Leg Moment of Inertia, in 4 I = H'(B 3/6) + E'(D 3/6) I= 0.9682 Yoke Extreme Fiber, Inches C = B/2 C= 1.125 Valve Centerline to Yoke Leg Centerline, Inches R = X + H/2 R= 4.099 Normal Condition: Thrust + Deadweight Membrane: Tnm = 2A(1.0S) 40,163 Membrane + Bending: Tnmb = 2A(1,5S - (WLC/I)) 52,517 Faulted Condition: Thrust + Deadweight + Seismic Membrane: Tfm = 2A(2.0S - G1WL/2RA - G3W/2A) 78,200 Membrane + Bending: Tfmb = 2A(2.4S - GlWL/2RA- (G2+1.0)WLC/I - G3W/2A) 70,312

ALTRAN CALCVLATIONSHEET Sheet: C O Calo No: 91187-C-06 By: Data:~8a. p a Rev: Chk: Date: 3(z(<z Operator Bolt Calculations - 4 Bolt IupurparamerersforValveNumber(s): 857A,857B,857C r SQ> A Bolt Size, Inches Size= 0.6250 Number of Bolts N= 4 Bolt Stress Area, Square Inches Ab= 0.2256 Axis 1 Bolt Spacing, Inches Ll= 3.890 Axis 2 Bolt Spacing, Inches L2= 3.890 Bolt Material Allowable Stress, psi S= 25,000 Size of Limitorque Operator SMB-00 Weight of Limitorque Operator, Pounds W= 305 Height of Limitorque Operator, Inches Height= 10.000 Thickness of Operator Mounting Hange, Inches Thick= 0.625 Seismic Acceleration Along Axis 1 Gl= 2.10 Seismic Acceleration Along Axis 2 G2= 2.10 Seismic Acceleration Along Axis 3 G3= 2.10 Geometric Properties Moment Arm, Inches L = Operator Height/2 + Flange Thickness 5.625 Normal Condition: Thrust + Deadweight Normal Thrust Tnm = 4Ab(1.0S - (WL/2AbL2)) 21,678 Faulted Condition: Thrust + Deadweight + Seismic Faulted Thrust Tfm = 4Ab(2.0S - G1WL/2AbL1- (G2+1.0)WL/2AbL2- G3W/4Ab) 39,893

ALTRAN CALCULATiONSHEET Sheet:

Gale No: 91187-C-06 By:

Rev: Chk:

Yoke Bolt Calculations - 4 Bolt IaputparametersfurVatveNumber(s): 857A,857B,857C 86r>> tA Bolt Size, Inches Size= 0.5000 Number of Bolts N= 4 Bolt Stress Area, Square Inches Ab= 0.1416 Axis 1 Bolt Spacing, Inches L1= 9.450 Axis 2 Bolt Spacing, Inches L2= 1.500 Bolt Material Allowable Stress, psi S= 25,000 Height of Yoke Legs, Inches 3.875 Size of Limitorque Operator SMB-00 Weight of Limitorque Operator, Pounds W= 305 Height of Limitorque Operator, Inches Height= 10.000 Thickness of Operator Mounting Range, Inches Thick= 0.625 Seismic Acceleration Along Axis 1 G1= 2.10 Seismic Acceleration Along Axis 2 G2= 2.10 Seismic Acceleration Along Axis 3 G3= 2.10 Geometric Properties Moment Arm, Inches L = Leg Height + Operator Height/2+ Flange Thickness 9.500 Normal Condition: Thrust + Deadweight Normal Thrust Tnm = 4Ab(l.OS - (WLQAbL2)) 10,297 Faulted Condition: Thrust + Deadweight + Seismic Faulted Thrust Tfm = 4Ab(2.0S - G1WL/2AbL1 - (G2+1.0)WU2AbL2- G3Wl4Ab) 14,415

ALTRAN CALCULATlONSHEET Sheet:

Gale No: 91187-C-06 By: Date:~gus~

s(z(<<

d'hk:

Rev: Oate:

Bonnet Bolt Calculations - Bolt Circle Analysis Input Parameters for Valve Number(s): 857A,857B, 857C >

860 k Bolt Size, Inches Size= 5/8"-11 UNC Number of Bolts N= 10 Bolt Circle Diameter, Inches d= 9.188 Bolt Stress Area, Square Inches Ab= 0.2256 Bolt Material Allowable Stress, psi S= 25,000 Distance Body/Bonnet Flange to Yoke Flange, Inches HT= 8.500 Maximum Operating Prcssure, psi p= 600 Mean Gasket Diameter, Inches DG= 6.875 Height of Yoke Legs, Inches 3.875 Size of Limitorque Operator SMB-00 Weight of Limitorque Operator, Pounds W= 305 Height of Limitorque Operator, Inches Height= 10.000 Thickness of Operator Mounting Flange, Inches Thick= 0.625 Seismic Acceleration Along Axis 1 G1= 2.10 Seismic Acceleration Along Axis 2 G2= 2.10 Seismic Acceleration Along Axis 3 G3= 2.10 Geometric Properties Moment Arm, Inches L = Leg Height + Operator Height/2 + Flange Thickness + HT 18.000 Constant Based on Number of Bolts 3.750 Normal Condition: Thrust + Deadweight + Pressure Normal Thrust Tnm = NAb(1.0S - (WL/dFbAb)) - piPDG 2/4 32/33 Faulted Condition: Thrust + Deadweight + Seismic + Pressure Faulted Thrust Tfm = NAb(2.0S - G1WL/dFbAb - (G2+1.0)WL/dFbAb - G3W/NAb) - piPDG 2/4 81,601