Text

Rev 1 to Containment Isolation/Purge Valve Analysis: 54-Inch Ria Valve W/Pratt 2 Plate Cylinder Operator. W/One Oversize Drawing.Aperture Card Is Available in PDR
	ML20071D704
Person / Time
Site:	Turkey Point
Issue date:	09/16/1981
From:	Zo R; HENRY PRATT CO.
To:	;
Shared Package
ML17345A980	List: L-83-120, Forwards Rev 1 to Containment Isolation/Purge Valve Analysis:48-Inch Ria W/Bettis Actuator & Rev 1 to Containment Isolation/Purge Valve Analysis:54-Inch Ria Valve W/Pratt 2 Plate Cylinder Operator; ML17345A981; ML17345A982; ML20071D667; ML20071D704;
References
	NUDOCS 8303110303
	Download: ML20071D704 (99)
	v • d • e

m( a 2 3,n,..a. ay3:ffynm.fIm p w w.p{nm.m.y.< m a ma a;9.; w[.s f

'gi ff

[

-I i

3 G%

p ' ((w.

-w.

>,m, 2,w:r.e. r.1m..

. e. u. q.

-. r..e..*w~e.4,oqz.%..ye.,.~..

.wm. a%w?pp y.n_~ a :

2..<....

.,s, s w.

+. y.

,:, ;e:;.v.e.

~

.,~;.,.

, m-

,.; m.. ;<a 4,.

. w.. m a

,..an

~ c y.u..e: : wQ:m qvym 4, v;<na,4

,c.

-:.w.n;... p 1

+

y

.N, %y+w.W.p.;,.. w.hr.m

~

X ?a > c

.+

f.,.wv.f.

AU T,

%. L., ' ~y.. h;r.,- M

. s u..x.,g.y,.!M wr.p&a.&n.W.M. ' !,? ' ['m.bM~.EW,. s W. 9

. z.

w.:

4 5.:

.7

. %9WG (

L. M,^_ _V.

., N:, V~ ~.NM%. M h29

. ~.,2 DD.2

e un w: _

s s

.- z.. n v

i M M M'c.W *

t. 4.,% '- 3 0 F

'*'.'[ gr.C ". [Nj My, '...'al*"~-'.*'*',

15

.i.**

f*.,;' #

.,l

5. Nf #f

l af y % W. $ 74?r.k" '*h[' N -;M' @G.W.mK Zi'.S.W.':c K~

' ' ' ef~~d- ?. *

{L

.~ \\

c,% **'L1 ?~':1 Y UVE"

^ * ' '

~\\,

*1 M*&

I ' ?i c' Ee"R.: %#P' W D=. : 5 * *** '

N W'

+

(L. m'*...

a M

', ", s.p.q:Q.M.,Rg:A,,e: KG.M p

.g; m;; c t. g..,'.

3<.x..a;a,p %.

L

.""'.,.n dq e' f..(.

..~.... ?n.,.c :.....

. :,:;,. &..'.'.,W. :s f-y } '.'.:~~. w l:^,*

,,~ &w* a,5~.+. Q.v. ;u: ,y,._b,:,

_G n.

z.

m.

l

[ 4 ypQ *' h..

. ;-L.,2

,'<,-Q.*.*

~#.

m~f.

f

4

{.g',Q:},

Q,,. ; 7.

[*d.

y W,gn m%j:;' 3 V s ^^

~

.?

i L,' ; *

I w.

.,, ; f ^: <s,

Qs

^-

.[j h *$

A

,k ly,

e p' m,.

<e;,~.e v.

x.

c'"w tc

a :,. 7.g, u g,

.w s.

- s 1..

J

.. t,y

.u.n. m, v% i W+ NZM, a.,5

y.,.z. m.c

tc.y, y.'}

- s

,.c ag g.y

.w n. 3.:x, c.

um:; g u

..,,. m.~n n. x.EM:

w.,.

-i. n n 4+i2-.4.,; e.- n

. g. A. w.

. m..n.

e' 215E iscMnWM,T-2A,kV: P.;w.W:y},J f

.. +/

..-W w v -y e<

s.,-r

.rs 4

%y.- J ~

W L y b h 2 & &:

e&

y 4

w, i:

v.,

pp. ', 4 c., -

f...: 4 pt.

m..-

~ :y, t v' w g

p :.

, m.. %.

l

._...s+

s m,

. w=.s.

x,,.,ac

,.rw

,xc

~

n-n..

l

. ~,.,w

~

9v)

- M, 'd,. -

i I I N I n I 'I t \\'l"I' ( 1 )\\ 1 1 '. \\ N Y

. %5S. l

> ::t ;.;<Y.

n s. ~ 4.,

.a.

,;,I k-

- { Q' p'.,/.,6*)

1, p, rag. i

+*

,,f i

. 3 I I J

,?>

ev,

% 2*0

, [*.

4 *,"

j

+

.'.'t'o,,."...

.r

'f I *%

', -+ z ' [y b' '.A,rt,

A

~.~'?.-t s

.v a'

h^K

O D'.M 4

1 }

4

h.., f**,[ ' a*+

O -

O

, l*

k 1.

y p&

'.. o)4..,,.e

.~ J

.'v-m w

. - ! 5,...

1 y

4 "-

.a b

* ",S (a* C, a n[o w.'w'. -Q& h' f'.

[..,,a.',.

Is.

d.

u,." ?

a 4

^^. w

.5/ ** : '

t'q. -}

e,CD

< ; '*. y' *,.lQ:?:

w

't L l',k..

a

'y if,-

M n p a;. e 4-*jd*0,L^' h._.f t

'W e; y.

.; 'f %.$ :~g!$

p. 3.

4..

-Me r

n'WN.'2; MMWU Wn.: i'?,bj&+y&,y- )n w..~ o w~ n,<ql y..;h

%:o v ~ w:.

x.,,s..c... -

-is.. 1;W

g.. ~h ~W 'n ;g, p.3 ; e w

g:'.'v. w %.

OJ t

[

L's $.. yr

W

's.':l T,..,sM. S*.. -

W.

gy%

+ s. - n, -.

4

' e '%g g** ?*: p.f.

We<3, r

., Q

', - *l

. 'm(..f., f/p$p%,7,as,* 4 K

4 s,,.,

.,o-4

.,N.?",y.%. 63 e.'W.n -.,Y,.4 m.

d

" a6 H

.m l.p,% ;i

+

' "p '^ :s 4 M 4., #.

i (

.. ; 2 ) "s. g-

4" LC'

^. & z. vhw f Rfs.

'..s N g]...' 21Qj.:' g m 4 %.w.- e w a w ~ w$ 'SW T-W M. p.M'(<ht[ w.j$s{g[h

2

'* %W7WfghTJWQQ@pfgf,2~M~'T' t

i

.mxm.v

. m.

.,.v.: : (.y.:-w. p. w.

.r=.

n[f n.y' p-+

& &- Q,, W W-k h_gkf$ &m _& e$~

mm -

m ews c

m aa n

1*

IW M@m m e

^ ' '

-,J ~

+? &

4

~+ p.n w% g n

~

Y + n(5$ n; h ~e#f g% & Q.;g aax 1W9=bp W

ut m wep 1

g 4

d%F u; NWsf~Nb.?;.$$'5.:A..g$$A i.

a-.. Qti 3 2&,p&M..Qx vl Y

l E y m y ' M,k ~' 4 WM.f.;yc%.y@& J._ ;W ^

vEu. A 6 yn h.n ; p dY W i M

QU:

. W " V,D.. sv s 4 z

=-

. p s,,,

k y m

i kY." 5'W~ Qu.

+N

" d'

+**p#~;.- g.ht WL /..

- ;5 v 4 4

.' Q

Qt4 **'

v a w,E. ? w m.gmaw.w.<g_ ~ Ch.'

%1Rurr-J*u O

wg. my qw'n gu L

/

.'eme*4 W g h 3 W Ay-

O ^

4.*** *

.h.I 5

g m.

Vq a#.

w-t m

q a

n @amm.am^e.

ap.a s

wworakg.mp

%%mSyST

+

3.m_ _

Mfh':t4NQQ ~'

.-p"2.-

l i M.f )>?%

s Q439p%p.:,

Yc r. y um M.* wm e

i wr%%

4WK - g

A'$.'**

&&,p --MG

\\Q g&j V g : k N } W Mq =,q p a.5 5, fy D

se p)!W 4

Cs t.3 i262

' - r fN.%

G mw%6.

m t

-"A

+

sk$e TN. hF "M$$%

N.

n N

a k,C w

w.?%+ L e, ws w%lQQh

... t a

ng W QWW.

W iM o

d'". D ~ - '

f

,;g7 yhA.

{Qyl 7

p;y t

y SLEEhE E N h. b M kE E N M M d d 1 3 3551 8,

=..-

P.cVision i STRC3G PCPORT FOR.

1 54" RIA tlITH PP1sTT T;10 PLATE CYLINDER OPERATOR 1

Project Site Turkey Point Units 3 & 4 Cus tomer Florida Power & Licht Co.

Engineer Bechtel Power Corporation Original Specification 5610-M-83 Original Purchase Order 5610-M-83 l

Original Pratt Job No.

7-3071-3 & 7-3071-4 Valve Tag Nos.

POV-3-2602 POV-3-2603 POV-4-2602 POV-4-2603 i

4 4

General Arrangement Drawing E-585 Rev.

3 Prepared h.:

b2 N. M a c-

,saustnsurro,,

Date;

@ FILL) RI

....?."]f %

f.O Reviewed by:

j-f M/7,ncL.

! j pg

\\

Datc:

[-/5-8/

Certified by:

~

3$.

EtiCit;GER

,gg N L.........INO\\g-l Datc:

cs - s co -e. l

'riria,,a,0 *

I

I I

i I

I i

4 i

f CONTENTS l

i l

l Page 1

i I.

Introduction 1

II. Connidorations 2

III. Method of Analysis 4

i A.

Torque Calculation 6

i j

B.

Valve Stress Analysis 8

r C.

Operator Evaluation 9

IV. Conclusion 10

v. Additional Information 11 j

Attachments f

(1)

Input Documents (A)

Pressure vs. time graph j

(B)

Pratt letter regarding additional information 4

j (C)

Customer / engineer response to request

~

for information l

(2)

Valve Assembly Stress Report l

j (3)

Supplemental Torque Calculations (4)

General Arrangement and Cross-Section Drawings 1

l l

\\

l l

f i

l e

, )

j I.

Introduction This investigation has been made in response to a request by the customer / engineer for evaluation of containment isolation / purge i

valves during a faulted condition arising from a loss of coolant accident (LOCA),

The analysis of the structural and operational adequacy of the valve assembly under such conditions is based principally upon t

containment pressure vs. time data, system response (delay) time, 3

piping geometry upstream of the valve, back pressure due to ventilation i

components downstream of the valve, valve orientation and direction of valve closure.

The above data as furnished by the customer / engineer for'ms the basis fcr the~ analysis.

Worst case conditions have been applied in the absence of definitive input.

i 4

S

.----_,,,.,--__,,..m..__,7

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

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

II.

Considerations The NRC guidelines for demonstration of operability of purge and vent valves, dated 9/27/79, have been incorporated in this evaluation as follows:

A.1.

Valve closure time during a LOCA will be less than or equal to the no-flow time demonstrated during shop tests, since 7s fluid dynamic effects tend to close a butterfly valve.

Valve A-closure rate vs. time is based on a sinusoidal function.

~ 2.

Flow direction through valve contributing to highest torque; namely, flow toward the hub side of disc if asymmetric, is used in this analysis.

Pressure on upstream side of valve a

as furnished by customer / engineer is utilized in calculations.

Downstream pressure vs. loca time is furnished by customer /

engineer or assumed to be worst case.

3.

Worst case is determined as a single valve closure of the inside containment valve, with the outside containment valve fixed at the fully open position.

4.

Containment back pressure will have no effect on cylinder oper-ation since the same back pressure will also be present at the inlet side of the cylinder and differential pressure will be the

(

same during operation.

5.

Purge valves supplied by Henry Pratt Company do not normally include accumulators.

Accumulators, when used, are for opening the valve rather than closing.

6.

Torque limiting devices apply only to electric motor operators which were not furnished with purge valves evaluated in this

,~s

~

report.

7&8.

Drawings or written description of valve orientation with respect to piping immediately upstream, as well as direction of valve closure, are furnished by customer / engineer.

In lieu i

of input, worst case conditions have been applied to the analysis; namely, 900 elbow (upstream) oriented 900 out-of-plane with respect to valve shaft, and leading edge of disc closing toward

(S outer wall of elbow.

Effects of downstream piping on system V

back pressure have been covered in paragraph A.2. (above).

B.

This analysis consists of a static analysis of the valve components indicating if the stress levels under combined seismic and LOCA conditions are less than 90% of yield strength of the materials used.

A valve operator evaluation is presented based on the operators gm

()

ability to resist the reaction of LOCA induced fluid dynamic torques.

C.

Sealing integrity can be evaluated as follows:

Decontamination chemicals have very little effect on EPT and stainless steel seats.

Molded EPT seats are generically known to have a cumulative radiation re'sistance of 1 x 108 rads at a maximum incidence temperature of 350 F.

It is recommended that seats be visually inspected every 18 months and be replaced periodically as required.

N Valves at outside ambient temperatures below 0 F, if not properly 0

l adjusted, may have leakage due to thermal contraction of the s_j elastomer, however, durin_ a LOCA, the valve internal temperature would be expected to be higher than ambient which tends to increase sealing capability after valve closure.

The presence of debris or damage to the seats would obviously impair sealing.

l l

i ('

l

\\

l 1

L

... 1 III.

Method of Analysis Determination of the structural and operational adequacy of the valve assembly is based on the calculation of LOCA-induced

)

torque, valve stress analysis and operator evaluation.

A.

Torque calculation The torque of any open butterfly valve is the summation of fluid dynamic torque and bearing friction torque at any given disc O( ) angle.

Bearing friction torque is calculated from the following

{

equation:

TB=PxAxUxd 7

where l

P = pressure differential, psia f['

A = projected disc area normal to flow, in U = bearing coefficient of friction d = shaft diameter, in.

Fluid dynamic torque is calculated from the following equations:

For subsonic flow

~

i p

R

EE# **

CR P 2

,/

3 T

D T1

2*

' RE 1.4 For sonic flow P 1 -

R P-CR

_2 3

T

=

x

,, x

,x xF RE (F

5 1)

D

{'J

'T 1.4 RE

'~

~

Where fluid dynamic torque, in-lbs.

T

=

D

- FRE = Reynold number factor y_

Reg = cMcal pressure rado, U

)

P

= upstream static pressure at flow condition, psia y

P

= downstream static pressure at flow cond n, psia 2

D

= disc diameter, in.

CTl = subsonic torque coefficient CT2 = sonic torque coefficient

[

K

= isentropic gas expone.

I

.or air / steam mix)

4

= disc angle, such that rully open; O

= fully closed Note that C and C are a function of disc angle, an Tl T2 exponential function of pressure ratio, and are adjusted to a 5" test model using a function of Reynolds number.

Torque coefficients and exponential factors are derived from

) analysis of ' experimental test data and correlated with analytically predicted behavior of airfoils in compressible media.

Empirical and analytical findings confirm that subsonic and sonic flow conditions across the valve disc have an unequal and opposite effect on dynamic torque.

Specifically, increases in up-stream pressure in the subsonic range result in higher torque values, while increasing P in the sonic range results in lower torques.

-s 1

\\/ Therefore, the point of greatest concern is the condition of initial sonic flow, which occurs at a critical pressure ratio.

The effect of valve closure during the transition from subsonic to sonic flow is to greatly amplify the resulting torques.

In fact, the maximum dynamic torque occurs when initial sonic flow occurs

~~g coincident with a disc angle of 72 (symme tric) or 68 (asymmetric)

-(b from the fully closed position.

__.y.

l 1 '

I t

i The following computer output summarizes calculation data 0

I and torque results for valve opening angles of 90 to 0 4

l i

i l

t i

l@

i i

O 9

I l

i

['~'}

D-27256-1 TOROUE TAELE 1

9 / 11 / 81

\\

/

U JOB: FLOP. Pup TUPFEY PT P2-VAPI ABLE OICE AD JU TED

FEYNLDO ric.FriCTri!)

IAT.0 TEAM AIP MIXTUPE u!TH 1.4 LE! STEAM FEP 1-LE! AIP OPEC.GP.=.738255 MOL.WT.= 21.3872 VPPA < I CEtiT. EXP. ) = 1.19775 R= 72.1972 GAO Curt: TANT-CALC.

Curi!C : PEED <MOVIriG MIXTP. ) = 1371.29 FEET /SEC AT 283 DEG.

CRIT.CA!E IfiLET VELOCITY 10 1.49311 TIMES HIGHER AI AIR CRIT.CAIE ItiLET V1-OF 5 ItiCH MODEL MAX. TOPOUE IS AT THE CRITTCAL PFE00. PATIO (.585-(5 Itt)MODEL CP APPX.696352

( 53.25 IrDulTH OTMIX.)FIPOT :OrtIC'S 72 DEG.V.A.)

ABOCL. MAX. TOPOUE (FIP!T 00ri!C) AT 72-68 DG. VLV. AtiG. = 751527 Iff-LES S 72 DEG.

MAX.TOPOUE IriCLUDES OIZE EFFECT(FEYh0LDO NO.ETC)APPX. X 1.32454 FDP 53.25 INCH BA;IC lit'E I.D.

ALL PRESIUPEO UIED:3TATIC(TAPiFFESO.-ABIOLUTEiP2 ItiCL.FECOVEPY PRE 00.

g (TOROUE) C ALC' O VALIDITY:P1/P2> 1. 07:

VALVE TYPE:

54"-R1Ai3/7.5 CLAOO 75 DISC SIZE:

53.062 INCHES OYMMETRICAL DIOC OHAFT DIA.:

4.375 INCHE2 BRG. COEF. OF FPCTrt. :

5.00000E-03 SEATING FACTOP:

15 IriLET PRE;0.VAP. MAX.: 60.2 PSIA OUTLET PPE000PE(P6):

34.13 PSIA (72 DEG. ACTUAL PFECO.ONLY(VAP.))

NAX.ArfG. FLOW PATE:

695628.

CFM: 1380813 SCFM: 75907.1 LE/MIri a

CRIT.!ONIC FL0u-90DG: 85975.5 LB M!t! AT 37.2315 ItiLET PSIA VALVE IriLET DEri?ITY:

.10912 LB/FT'3-MIri.

157531 LE/ F T ^3-t1 AX.

FULL DPEtt DELTA P 9.48389 PSI SYSTEM CuriDITIuriS:

PIPE Iri-PIPE-0UT -Ar4D-AIP/ STEAM MIXTUPE OERVICE S 283 DEG.F s

MINIMUM 0.75 LIAM. PIPE DOWrtSTPEAM MOM CENT.LINE ! HAFT.

P1 ABO. FPESOUPE(ADJ.)FDLLOWO TIME /PPE!O.TPANSIENT CURVE.

AE!0 LUTE MAX.TOPOUE IO DEFEfiDEf1T Ott DELAY TIME AND 3.43 TC 2.15-TH POUER OF (PleP2)Iti WOPST PAriGE X LINEAR CCri! TANT X Duti TP.PPE00.

P6-AEO. (75-6 0DEG. ?

IN SUEOCtlIC PAriGE LIMITO-OrlLY;0EE FDFMULATIONS.-FEP TECTO H.PF ATT THIO TQ. AT 72 DEG.SYMM. DISC (68=0FFCET SHAFT) CT=T/D^3/R2 ( ABO)

--5 ?N.MODEL EOUIV.VALUE0------ACTUAL SIZE VALUES-----

ANGLE P1 P2 DELP PRE 00.

FLOW FLOW TD TB+TH TIME LCCA>'

APPPX.POIA PSIA PSI PATIO

<!CFM)

(LB MItD =

IriCHLES---- TD-TE-TH

~EC.

[

90 41.70 29.38 12.32

.704 CP1380813 75907 0

1610

-1610 3.00!

85 44.29 30.92 13.36

.698 1456702 80078 18?449 1640 185809 3.19 80 46.31 31.38 14.93

.678 1463337 80443 275664 1706 273958 3.77 75 48.07 30.60 17.47

.637 1446726 79530 447458 1835 445623 4.13.

72 49.01 28.67 20.35

.585 CP1330633 73148 712696 2034 710662 4.32 eN 70 49.59 27.99 21.61

.564 CP1300953 71516 691837 2018 689818 4.45

)

65 50.86 25.10 25.77 493 CP1172749 64469 645?69 198?

d43386 4.72 1

3 60 51.87 22.47 29.40 433 CP1004642 55227 540019 1904 538115 4.95 55 52.61 19.97 32.64

.380 CP 844278 46412 527993 1909 5260$?

5.11-50 53.05 18.37 34.68

.346 CR 690066 37934 405970 1981 403988 5.22 45 53.20 17.21 35.99

.323 674335 37070 358290 2042 356238 5.25' 40 53.33 16.45 36.88

.308 466700 25655 261477 2101 259375 5.28 35 53.72 15.67 38.04

.292 361955 19897 199745 2145 196600 5.39 30 54.34 15.22 39.12

.280 269438 14811 107525 2189 105336 5.55-25 55.16 14.97 40.19

.271 186718 10264 68689 2225 66464

" 78.

~20 56.15 14.82 41.32

.264 115503 6349 48297 2297 45999 6.05 15 57.23 14.72 42.50

.257 65662 3609 17838 2408 15430 6.38 10 58.34 14.71 43.63

.252 32?10 1803 11262 2542 3720 6.73 5 59.40 14.70 44.69

.248 10936 601 5831 2695 3135 7.11 0 60.20 14.70 45.50

.244 0

0 45133 2600 42533 7.50 s s L

IEATIrfG + EEAPING + HUB IEAL TCPOUE < M ' M4 =

47734 Iri-LBC 4 0 DEG.

71269s IN-LEI & 72.DEG.

MAX. DYti. - IEAE!NG - HUB :EAL TOPGUE < rd M s --

.... ("

B.

Valve Stress Analysis

\\

The Pratt butterfly valve furnished was specifically designed for the requirements of the original order which did not include specific LOCA conditions.

The valve stress analysis consists of two major sections:

1) the body analysis, and 2) all other components.

3 The body is analyzed per rules and equations given in paragraph NB 3545 of Section III of the ASME Boiler and Pressure Vessel Code.

The other components are analyzed per a basic strength of materials type of approach.

For each component of interest, tensile and shear stress levels are calculated.

They are then combined using the formula:

S

= 1(T +T2) +1, (T +T )

+ 4(S +S2) max 1

1 2

l 2

2 p

\\--

where S

= maximum combined stress, psi max T

= direct tensile stress, psi 1

T2

= tensile stress due to bending, psi S1

= direct shear stress, psi S2

= shear stress due to torsion, psi

/

The calculated maximum valve torque resulting from LOCA conditions i

is used in the seismic stress analysis, attachment #2, along with "G" loads per design specification.

The calculated stress values are I

compared to code allowables if possible, or LOCA allowables of 90%

of the yield strength of the material used.

-,._,,-,c, n.

9 C.

Operator Evaluation i

Model:

2 Plate Cyl. Operator 14 x 18 w/ spring to close.

Rating:

75000 in-lbs Max. valve torque:

712696 in-lbs The two plate cylinder operator furnished was specifically designed for the requirements of the original order which did N

not include specific LOCA conditions.

The maximum torque generated during a LOCA induces reactive forces in the load carrying components of the actuator.

The operator model furnished has an appr0ximate rating which exceeds the calculated valve torque for the following valve angles:

30 degrees open to O degrees (fully closed)

Listed in the attachments section of this report are the i

following documents used in evaluating the structural and operational adequacy of the actuators.

- Supplemental Torque Calculations (attachment #3) 1 4

~.. _ -..

- -. =.

10 IV.

Conclusion It is concluded that neither the valve structure (with present materials) nor the valve actuator are adequate to t

withstand the defined LOCA-induced loads based on the calculated torques developed in this analysis except for restricted valve opening as described below:

Specifically, the valve top shaft, disc pins, thrus t bearing adjusting screw, trunnion bolts, operator bolts, and bonnet are shown to be overstressed except at valve disc angles of 40 or less.

(See attachments # 2 and #4. )

In addition, the calculated torques exceed the rating for the actuator except at valve disc angles of 30 or less.

i e

5

. =.

11 4

i j

V.

Additional Information 4

The following items are presented to describe how system f

1 c

factors aff~ect torques developed in this analysis for your consideration and are informational only.

Further analysis by the customer / engineer is recommended I

prior to implementation.

1.

An important factor governing the magnitude of the dynamic i

torque is delay time from the start of a LOCA incident to j

activation of the pressure sensing mechanism, which in turn

]

initiates valve closure.

Careful re-evaluation by the customer / engineer of the pressure sensing / timing sequence 1

may render the present valve assembly functional through a significantly greater range of angles.

2.

Installation of a convergent-divergent section downstream of the outside containment valve with a throat area i

sufficient to allow unrestricted ventilation during normal operation, but which will choke LOCA-induced flow while 3

the valve is closing, through the critical range of 80 -60 1

open, could resultantly reduce the flow through the valve to subsonic levels.

%_sl t

I 3.

An orifice plate installed similar to #2 above can also choke the system downstream.and reduce flow through the valve to subsonic levels.

4.

Mechanically restrict or block the valve disc to a maximum l

disc opening angle.

(See attachment #3 for further 1

illus tra tion. )

l l

l i

'l l

l f

l 1

i t

i i

i E

f I

4 t

i i

ATTACHMENT 1A PRESSURE vs. TIME GRAPHS 4

l i

V e

I 4

r i

1 l

i @

~

1 e

l I

i i

I r

I i

1 4

I l\\6 4

d.

~

10 -

i i

i.

8 l

.t.. _.

l s

.__.___I

__._s'..

i. _e-t t

6 t

4

.t i

8 I

+

...s

.:l

-F;

. -l 7

.t i

- - }

(

l 6

.----2

,o :

t.

t I

- p t

i i ::

g

. :_ 2

. :_._ b.. i..... ;. _ =. - !.... : : - l n..h....r:.i t

9

. :_.-..... ; __ : r

.r 4

l I..

I

(

) _ Q' 7.--_-_ & - --_ k,. - l.

__ L

l.._ -.Y

!L_ ___...._

t t

. 3 v

i.

[

.t _.. ; - -

r-

-\\......

r

.- J,

. r

. : :. :. 9

'c!.

FM. --i :H % ?"_H

" 1 F ! * : = - 2 W :

i :" x- !,j ) ---. e e zh _i-h__$.*n. :__ =_::.:.h _.:~...~._ _....b_ _u_= =.i - __--._- "_ _=.._~__ U = ~ ; ~ '.' a _-.1

_ _" _'_ 7 - ". _~ ;. "_ _ _ _ -- //_'_... __ i...

8

_. _. t.._

_ _. _... _. _ _ _ _ _, _ __ s_ __

..e

._ L

...,..a o..

.._ M.,._ _ _ _-.._ _ -. _. _ _ _..

y s__

y.

e p e_

m es

,_c.m g --.

_ - _ _ _4 e.

,. o w

E i

M 4e'*[

i l

/

e g

i_[4 8

i I

e I

i i

-.i 9

i I

3

/

4 l

. v g

r.L.

a //

A : - -.;-

c.:.=. ;

,N

-[i.....

.-t2

- _ _ ;..e:

...-L E

. a.

e - - - -

..:. :: I c r

_ _.c _L

.. _ !_. _ i +; - i. :_ _c r - L _ : ; bi ::. - rc:.,Q. a

'I.. :::. ___

- J [..' !. _.: 1.:@ h.: :-= b I

_... - n ;% 2. _ _. _ _ -. __.... _.. _..

t 7

7

/. -

e-N _. g

..-...._w.._.-__._g-_..___..__

.e_._... _. _.... _..__ _. - _ _ _ --_.______.$.._.e.=_.._

g m._

- i.2_~ -

-- - - - - _ =; :- r -== =.

_:pr-

___ _.=

-__ --- -__.;==_;=---__;

.u__.a

.c C *-._

s.

_2.

a

= :-- y a_--.;-.-.

75; Jy s

1 s...~i..

1 a_..

r

(,

-il ': F _ :. - l 1. --. - - -

,L "---M l : m J.F_ i.~.M/ [. =:.r =J. - - f.. - -..

_1.' i=.= v : J =_

.r.-

_:'_--- F. - ?_.. i; 1.....:J* _:

g b+ _S -1

- = = =-E : -_ic :2. r. --A f i i =. ti=r r = = :-- e e = =- 1 = =+-@ =_ ;- - ' = -= =_- = t+r-f: = ' -i -.- - r ~

= = - '

% _ w : - --

_ := =._: :_ :.: =_=. 9 : -_._. _ :. : _-=----==:_- - = : _ _, = _ - u - - : :._.....: :

_._2***--__r==:.:----..:-_

fiD. _.._

_..--==.;------!

_r*-"--..

_ +

se W'..

.i.

_t-u_e

.~

m a-==w-t*

NG -

p-r 4

8 m

t

- Tr*

I e

l 1

1 r

1 u n. gb #

s4 i

i l

i v

-Q

-_. n...: ..- _.__.._ __=.

a..

....y;g..._c-an a... w s:

r.

__, N u

~ -i :- N -.

. - N.8 7 '- *.m

w =~* --- r t_ - % E -*- - L - = n F r.

.-1

--W Q

e j

="

a. u _ = i =.i_----M f._ ;- :d.: ; - ; ::p;_- --- i=

-- - - = --.=f.2=_ ~_ @ h _: :.i= =j=.r. = -- =. :_ _

qa _,. _._ _. j

--- # - -- = -- = r - - __ r _ _ =- r -

2.; s _ : = x- - - -- - M ' ~- 2lM =: _=- -; u_==. ;_ _ _ - - - - - - - - - -

---___====.___w-:_:_._

q

' c __.___c g

-'=~:--'_:

- - ---=:">

== g,. _: __ __. _ __'-- =. = : __~'_- - - : :=.. ;:-_ __ w_N 6

- - --_ = _.. =_=:-

.Y 3

' _s._

-- - _p _ m g- ; =-,

3 - _

4 5

.. _.. J.

.y

-; = ;_. L. =. g.__ j u.. %. ;

2. _ - j.

g

_.= u - s :_ - - =_,.__- p..._. _ _ _.. _.. _ v :. _.. : : _ u =.. _ = =- _ r m.. :

2-4

-.--=u.---=_:-..

:-n.-_---

1 1.

- -... -. - 1.

s f-Ii-Q $ ' 2%;3 7i : -: = 3- - 'E *

.7-' F e

f_5 i"'=_ :;- i= ' ; I :-i== N_

t.g y_:._

.; -- w _ :

._z_=.--.

=_._ =.:.-

m. -_. _ _ r=== = = = =-. :_ ;;.. ; _ : = _ = -- - -:-=-=-._.-__--=_.--=y.__.-_..___------._-_==._=_=.=:._

.=._ _.._

r-....--

y a_ _ -

- _= = --

..___=._= g.=. _r _= _r. ; - - - - -

.,-=-------..__.=====._-.____=__:.:

y m

N.

.u.__._

i l

' _..e_ _.%__ v y

=4 6

1l

%s; q

q m

1 I..,

N a.

.v.

t x

i i

e i

i k

wsN I %.

1

_ _.- - s 'N, -

N~...

'...a:..

-:5N=

\\

9

}.

a O L '_" n-

-'s t

J...

\\ '.

~

a g F r

--r..

_u-r e

- 7 [ -;_ !

N _ _..- - N_

. 9 ; _. _ N-. -,. -

.j t. u.... _N - r

' r.c i

-m

,j=. rs

=i -

'.=':n W : = k=h.M i='W E i Nt in %-== = t = M-M-;=, s -: =

- >=.- :. ;, a__ _ :_. ;_.==..s 2..u = = :a ;_.: = u _g r _. a q-- = r. :_ :_ =._. - =- : _ -- =c.= = : r

.v

. =

g_

.- - M..== _ :.== _= u. __=_a I x =... tr r_. -

r. - = r :-- - -:

L~_ = -*. r.

r:.t n L.: t_ q - -

g _ p._ _.

,__v-

- I'-

1. _ -

__L

_)._.:_ M __i_.. Kf __; - N --

t

)_ -

A !

t_

[' _:

_1_._._._

i J

.. r ;i - h~ s. %-.\\i :. _ -. is...t

.i

\\

,y ci;;.

. _p.

F

._. r

._..i 1

.[:

F

_. - I~.

. g.

. - r --

_ p :. _. :... p_--. - : ;-.

L.

c._

u. U..u. i._i.1. t. p.., N.. - -. !

4. Ny _..;

1:

j s._

r.

c s

}

rt

.. ;._- - r.. = r u t_=.

r:.N._._. ; _ k.

- =.: -

b..

._......-_._....\\.

._._.__..i-

-.t r-

r :_,

s....__.

.N.,,.t..._.

. n, u -._4

.i w.

s _.._.

,i.

s _._.

.s.-

z

... g _..

s

.i (s.,._..s g

s\\

.s w

6-

.s si

,- w w.v._.

.6

.t s.

p.

.,,_. _ p..., 3 w..

_g g

{

.y m... n..... _.s.. n

__r..

r -__. !

,._.,...__ r.__ _ r._, g

. _,..__. 7.

xvm < w.vvv aon.n n rum ~vw.~~e.e

i f

f i

l@

~

i 1

31 1

i i

l 1

1 4

l 1

4 I

i 1

l i

ATTACHMENT 1B 1

PRATT LETTER REGARDING r

ADDITIONAL INFORMATION l

b t

I l

i k

P I

i I

[

_--s-me,,-w-,..-.__,,

- - -,, --~w.m.,.

,m.-

en-r_,o y,.-

- -., -n,gn.y

.,m.

o a.,,T.

1 2.m

'l IENIl'i ! M iTT O ni I nNY ll )) *.t h Ti l 11!(.l.1.\\ \\! s.\\\\ t '\\ t E

.\\l l(4 s. i \\, ll.1 J \\( )l.=

' h 1.*.s C bv

.T e w."'d 9 -9 P 1' $,

.I O, 9 I s.* %s...... '

.O

..C,. G u. g.J.

r>

.s e.

f' ; 4.

..s.e..y %.,

e

.} o....,

n f. 4

.a.4C m.

A. -.....

.s. e.

1 :'

q **.-

a 43.,. b s.f U. e...s..J 7.0 %a.

w

- n<

r'.14 b.%:

.b;J e.D 7 (J' *J c (.".

v o

n s.o..

4..

.r' 4 a'.$

m 4.

5

.s w.1 / s. 4..

2 =

..w...

w W.

c L., w.s. 3 C..

A n a., a.

3 n.9 3..=gg 173.i ef,.s

...m.

.i, r

e. s-

.6 a..

......., p o.4.,,..

2.

o.;ec.

..w ;.

u

.?lorida Power & Ticht Co.

o-,t*

v.o..

n, o77.,c-

3. L,a..... -.. '..4.

.s..

Conf'r.T.in~ our recent tele.chene uonversation the Henry Pratt r

C o., r 3,;,

,..1

.....w 3

g. 4 2. 2 -.

y3...g

.,.a.' V a a.". a ' V S.4S u y o.".

,., C.4. p. C. - - -.4. ; o.,. a.*

ea..

4

,1 u..2, 3.

.uw

-2a

.A O m' - s. c... e. a '. -.. -. v. a' u o#

~

2'.

3 =. v....' v e s s- ' ' j u-a d " c.' '.~"n u c.. 4_4 - 4 c.. s

'. ~

.i,. 4 e.

.. n,

. w : a.

- ;:.1 u - -.., ; c, c l

,.4.,. a,, e.,

i..

s.4g,,. 4.:.i s. 3 4,.,,

..y~

tha.a:n cm : rque and resultant stresses in the 'ralve assemb1'.'.

..,.v,.:...,

cw a s.,;..,.

4 e

.4 n.. :. o..,. 4 o.. e cs. 4 u. a. - o u;

.e.

ac.u

=-e-

.. s

, e. o..".'..

fYe W '.'.'

..% -**'.#.- O -

a

.;a 7

- %.. u C.:4.nb3A,

3 c 4 -.

m.2 m,e n : A. 4.e.4 en 4..oa c.i.*

4" v

w.s...--

w s 4.

3..

%... 4..'., 4. 0 44 1m 0.. q.,

m..

C.

a v.., e.. 4 uvWns wO 3,.. v m,

.,s V.. L.

3., ',,u..

(v

.. s..i.,/ a s.4Ze),

s

......u s u..-

.. w.

o e...

v-

's c,.. %... c.'

'w-a v..-

M

". s. _~,,".;

4..L-

, '..=

. m,s ".- a.

C o.

,, "4 w S.g 1

L

7

....=.g-...

'A.9.

s. 4. %..--.,.

4 1, c, 3.... 4.

.v

....v

.. v -. o v

b. 4

.e.. e.

e w

..... C..,. 4..

.,3 y.

s.

4...;. 4.4;p 7.

.o.. 7".

-.u 4

O s.4s 4.. '.

.'e

.c. b.p 4.

.S.n.',..

os

.. s. 3 -

.u.

e. u

,... v.

I l

I I

i 1

- / <.. m.

\\

r.

%..., 5

n. (,,

r..,.

-v.

sv,..

~ ~.

.?, :.,-

i 3

j 7.m. c,.

>.o,.,

.a t

.o..

n e.,,..e r..-..4.r..,,.

.h.,..

i

.w.

3.. ~... gy. d g.*.s.y

...g

" C."..

"sC.?s

...n O:

t<.,

,, _ C e. a.. : O n

.4.,,

...4.

. v-4, SOCC,ca.

u. o.v..

m.sm o

.o a.. _. 4. =

....i.. 4... um c'.'.' a v, 4... u-a s w a..'.'.

n This data '.111 be used

.-ith previously submitted information to Per:cra a

0.. torqu2 analysis, valve 3 rass analysis, and Operator c'/alcation as rcquired.

Verv. trulv.vours o

i i

' J. O

T p v.

3.h* Tm L v..n. dis f a me m...

.s

1 i

sf L AY A

t

..r O.". a, Y.a n a c. c r a.

l Contract and Proposal Engineering

/kk CO:

G.

L.

Esane i

i 9

d i

e I

l lL 1

l l

,-----..r,-,_,-,--

_ -_ =____...- __-.-__-

4 1

J; l

,1 l,

ATTACHMENT 1C CUSTOMER / ENGINEER ggspo;;gg l

TO REQUEST FOR INFOPJ1ATION l

e j

e T

e i

o Y

f a

4 i

t-w-w--vvm*ey.r

-.e----

m-

= - - -

Bechtel Power Corporation Engineers-Constructors

/

15740 Shady Grove Road h

Gaithersburg, Maryland 20760

[,.

301-258 3000

~~ -

March 26, 1981 Mr. T. J. Wrona Henry Pratt Co=pany 401 South Highland Avenue Aurora, Illinois 60507

Dear Mr. Wrona:

o Turkey Point Units 3 & 4 Bechtel Job 5177-152 REA-TPN-31 Purge Valve Analysis Bechtel Files:

A-21, S-77.1 V-241 In response to the engineering data requirements listed in your letter dated February 16, 1981, we feel certain assumptions and considerations must accompany the numerical values and thus we answer as follows:

lO 1) Regarding "The combined resistance coefficient of all ventilation components downs tream of the valves (one for each valve size)...."

We consider the conservative approach to be that condition which would pass the most Post Accident Flow. For that condition, all ductwork, except the seismically qualified and Q listed portions, would be removed in such a way as to not impede the accident flow path. The only qualified duct is the ten-foot penetration pipe between the two valves of any pair, which is the same diameter as the valve. Furthermore one of the two valves could be con-sidered to fail in its blocked open position due to signal malfunction.

Flow resistance coefficients vary considerably with valve angle. The entrance and exit coefficient for the penetration pipe also contributes to the total system resistance although the ten feet of pipe is essentially insignificant.

The flow medium is a mixture of air (k = 1.4) and steam (k = 1.3) with the steam portion increasing as the accident progresses. The conservative approach would then be to use the lower friction of steam.

Using 1979 Crane Technical Paper No. 410 - Flow of Fluids through Valves Fittings and Pipe, and 1977 ASHRAE Handbook of Foundamentalsywe compile the following flow resistance coefficients:

PIPE ITEM COEF.

REF.

Entry 0.78 Crane A-29 Length 0.03 Crane 3-4 & A-22 p

Exit 1.00 Crane A-29

BeChtel Power Corporation Mr. T. J. Wrona.

i Page 2 m

VALVE OPEN VALVE ANGLE ANGLE COEF.

REF.

0 90 0.17

'79 ASIIRAE 31.35 10 80 0.52 20 70 1.6 30 60 3.9 40 50 10.8 50 40 33.

60 30 118.

70 20 751.

NOTE: Take one valve at blocking angle selected during closure time and the other valve to vary from that angle to fully closed.

For example assuming a 30 degree blocking angle and the failure of the outboard valve to close, the inboard valve would have the following down.

stream flow resistance coefficients:

at 30 degrees 0.03 + 118 + 1.00 = 119.03 say 119 at 20 degrees 0.03 + 118 + 1.00 = 119.03 say 119

~_

\\,-

total system resistance coefficient, restricting the flow is:

at 30 degrees 0.78 + 118 + 0.03 + 118 + 1.00 = 237.81 say 238 at 20 degrees 0.78 + 751 + 0.03 + 118 + 1.00 = 870.81 say 871 the downstream resistance coefficient of the outboard valve is 1.00.

If both the valves were to operate and the recommended blocking angle were to be 50 degrees, the downstream resistance coefficient of the inboard valve would be tables as follows:

at 50 degrees 0.03 + 10.8 + 1.00 = 11.83 say 12 at 40 degrees 0.03 + 33

+ 1.00 = 34.03 say 34 O-at 30 degrees 0.03 + 118

1.00 = 110.03 say 119 at 20 degrees 0.03 + 751

+ 1.00 = 752.03 say 752 total system resistance coefficient would then be:

at 50 degrees 24 at 40 degrees 67 at 30 degrees 238 at 20 degrees 1,504 Assuming the generic k coefficients of butterfly valves are applicable to the specific Pratt valves supplied to Turkey Point, we have developed O

Post LOCA flow.

a family of curves to indicate minimum valve back pressure with maximum (See Enclosure 1) 1

- + -

,--e_

Bechtel Power Corporation 3,,

7,,, y,,,,

Page 2 V-241 i

I 2)

Regarding the " Confirmation that ruimum delay time from LOCA to initiation of valve rotation is 4.2 seconds. Provide a minimum delay time as well."

Minimum delay times would certainly be more realistic. However, we must conservatively consider only one time for each accident containment pres-sure curve. Three of the four curves can be grouped togener and the l

worst case envelope considered. The delay time for the envelope curve which is the double ended break is 2.7 seconds. The delay time for the 1

0.3 ft2 pressure curve is approximately 5.3 seconds. Delay time is found by adding 1.5 seconds to the point on the graph when 6 psi is reached.

Time of full closure will vary with blocking angle, however, we would expect an approximate linear relationship in regards to the maximum 90 d23ree closure interval of 5 seconds. The figure of 4.2 seconds mentioned in your letter is not a starting time for the Turkey Point curves and thus cannot be confirmed.

If thsre are any further questions, please contact us.

Yours very truly, ba A. W. Wilk Project Engineer AW/RVB:mfa

Enclosure:

Curves I

cc:

W. H. Rogers, Jr., w/o H. D. Mantz, w/o l

S. G. Brain, w/3

)

G. R. Gram, w/1 F. A. Panzani, w/1 O

R. J. Acosta/R. Li, w/l l

\\j M. Crisler, w/1 D. W. Haase, w/1 D. T. Hughes, w/1 D. E. Douthit, w/1 I

LEMIME E V-24L J 03 m-!se Cn c.

sur- ! 7

= : - r - ;.--

n

- n = r.. :: =. :r.=. _::+r.=:- a : = :x:. :.:.

. q_ a: --

n

-._ b. q..4 u.-- :1 r-

-- o

-- n-.:l-- :- : f -- r 7!

.n

.. _ _=__.: : e r - -.

. _ _ - _ _ -_gp

, m...

. _.... g.,_

1

., ) W, mu"3 2.a m.

-t m...;...n...

u ; z ~ ~ g _ r.. - 4.

M.gQ.

.a (s s

u it --

m --:

. l.,

-p

--=-

-:p.

.-m-

. 3..e ~.9,

_v y

- - 1... - _=.: :. ; : ;.1.,

,y..~~.

1,

)

=__-;. [. - : - M_ _*.e, g. p... '

.g

.,.: - - - y. 9._

__,..- +

~

e --

...~

%e

.: M 4. _

s, tw

-.. % j. e

.,-m,

= - -.

3 ;)

f.,

r. t. : :- l;..... _. ;

a rr.

.'~

,,., u

+

.,.,.; (

w

a,.:.

r

' - 1r --

)

. 3 -: =.::

.:=__.2::.n

g r.-- :--,

., -, w. g

u. m

--. r: -- r -- :..

v, /

- -... j :=.: Q. '. f. -. ' '

u. - -.

...__. = (.n.* g =g':*.r._:. n.2.J

. a.... ;. _ _._ a-

n.. -. y, - ::=. : -.' t-~~( 'u

- * -. - T- *l _

r

..=... : T.

.j-

3.. -

~;p_-- :::..__ _ :. _. _ - T.

3

i 2 ta :- %; 2

.-.: : u..

_n:n_:

i

-....~..a..r_.; : *.-.:. _ -. ?..-

w. r p r :-_= - : ;,-

--rn,-,

--,:u..=..

e.__._._.:_

.i*.*p_-..

. q.;,

. - -.. + +.-1++..,.

,, g.

i p-e 4 - * -4 1

l,. _.. k =.;_ = :_.:. w g --~ ~ j y,_..

.-g.

+ !: w;,.!

,. -- -- --.. ;ma - c :.....-._.-,, _:-:..

u.

,p

'---~~:..~. _s m

e 3. g: 4.

..._ _,.....:.j

=:= :2 g-:i eu.g -

T. g)

. c.,

v. t -- --

c

m.u. m u-22: =..

.t i

.. " _ _ c=-f _ _ * :."-*.. g.

.. r; g--~

- :-- --- a = - _ u :

j

-... }

-: --~ *-* --, - ; rc n

=.= :... A.rr; v

.~. t =.t.* r.8__.._...__g_._....

i---.

1-,

, _a [-.

~ i

.~..... p n r.-. - -.=:_:=:

.4::.g_;; --+ - t-* :

g-- :..e. : r --- ---..

7.- r. J._

_D w-.

-t

.g

_q.

i-- U-*.c1*rt; __.

m. g

>., __c:..f, I. __- _

_.:.4==_:. :..

. _,,.nd-'_.h-

1) w g

_s-

_. _ 5 N D--- -G.-]- IO[t 2:.

g.

^' F:E * : ----- _"

,d

].

. ={ r:&== {=--g== L_=.-. :=-t- _g:r,f. t.c r-- r. N : _-:=- N= t ---.=

m- --- ', ;

q....... - _n - _._-

T - --

= :--- -

3 3.,.

"---q_..--

., - w.s

-..: ?

+

.. : u--. " ::m __ _ I r m w ) p._ g.q-1 e.g _,m.3..g;, r. y=. :. !t_::::.=.r...N. g:.J N. 4 g

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

~

.s

. u m :a - ~ c L

T"

m

( _

.------ @.;-- 4-A. p --. ;

c 1 ' =r Qq 9'er WW-a.L*)

em.r:

e

/

od 4

se.. _ * -_.

__5.m:":=t::

-N c

Y,

- NNa NL N u - --- - --- - + - -

'%w _; '

g -

.g. g'4.

L c

N Q

/7b I

~,

. 4.J I

p Q eq 4-r'

.F I

. __. _?, n_.

.I.

'. -JL -

g

--.<.1 W

_-X-I

(

.*4 x* _~~

Y ^

1 p

n -._

/

. ___; g

._9.7 ar -

4 a

g N1 g,

..._ w 3

=# m -. u-...y

'=

,_,,s-

~r x

4 a.

U

~ ' ~ * * ^

~ ff f-.^

j Q

c a

z y

8 L

m rM 7~ ^ -,

G

,- [

?.,9= -

- -]- _ -' __ /

M

._~

,% [a s

_,,.=%.

p m

~

5 y>

- y = - 3 r-= g y

__g t- - -

_.M.n b

_ t..w

.. r.:q Q

2 V""P d._-,,,. - 9 "' ~ ~-- YC

-- _.

T*+

-=t"--~-----""--*

-wJjA)". -*6ag U

- _ _.,.=~ -

-p

,.A**

.-m fm;;.f

(,y 7 - - p,d:..

Q ea,

.. /_-

C 7

v,] r w

p :%

___y p

>j

_x p

n _. _.,... _ _

C 7.:". _ - _:....-~ _2.

J *Lr r*p#

.2 -

.7"*' -- ; 34- "* '

4

~h"*';;'

u

>s

_-.._..-__'Y=.

O

~J'~

-~.i 4

,r

--M

='

O ='

4.'-.,_,,#-'

_ - _. ~ -. ~.

3.I

. = - - -

r "'

a**'

^-------*---I----1---------

4 p

~ - '

-$------ 34

..T-

.~..L.Q f,'

2-

- - -- t.-- -- r__ __ _ _ _.. : n-n...._ :2 c :- -.-._.._-_ n --- a - -

-m y

m_._

~.2.......

e

~- -~'

- : = :.: =_: ----

_.4

-r-----

__.._.I m - -- -.2 2 =u.==.- ; - - - -- - -

- - - ___; = :. J _..

3

'~-~C

~~*

....;........: I

- -** :. g

^^N;

- J -

P. * - - 1... _ M : ! c:_ :. :: =. - : - - -...... e.-----I-............,.__!:I-w

^

...2

.m-

= r =1u--

C*---***U

h '

__ =..

n-r--- _._.2-_._.=:.._..=:.

= _.

_2.= : - %

' y., O".&-

g y

_ _ j.=. _ _.._ _._........_. _. y _.. -.. {.. ~. ~~..: *Cj.. =_. -":..:_". *. :. -_.::.n...:. !.

. -l.. _.... t _..-'w..$'..*._'..'*..

- -*'_-._=.~.~.'N,_,Mp.,

_----t-----*~--*------------r----2:------------*--

i-----*-----*

W

..M =r W %'Il*

U L.4 a ' (D 4

---!r ;..

_r._...__..__._.... _.. _ _. _. c tt.

_.t=:=: : n ::.u c --. ---..x : _ _.: 22. : r=_..=_=.=:nn

- ~

<n C

e% **,,

C _n g q,g _;_

q

.a d u.:= :!.... _..... _.. _....

.a----'-"-"" - - - - - 3

_ : r---

=..:m::......:.: un. n....... : c... _ :

x i

. yu:

['-'

x_:

t

=

. L.,; 3

~

n_

x,

9 p-

.4

_._. =. u n -- :

j o

g 9

s so n

a a

a t-e o-n.

m N

~

w x

-i

~

V/Sd

.MnS Snd "> WS D M

[. wl 3

JCS _w-m Cu c, Sm- ! ~

. c a, i

,7

- {'***"**;..

?

..._..-. _.......5. -.

. r'.

p '_( '.j.,agl'

,,..P,g' s,,4

_... -.. e%.,.

_,,___e.

,.t

. a

)

6 ff

'!***?*"""**.'****

I gg --._...

r M 4

_s e.

g*..

=. ? ; g.*; m. l

.,e

c. e * -

g s

f, g,3 3 gJ t** U?

y

.4

1

- 9 *r 1*

... rare,-

--. u :-- r.

v.

.-s

a--. a r.

., a r.:

:,.m e. -.. _:r....:..

N., I.

c0 g { -._ e.-

. i

- g*

A

-,f

e. ; --..

-. r -- - r - - -- - --- -- -

e.e.

... a,*;

L m'g.;

.,.~ -..*.-.. ;..

,..t.

. g -

N.-

O

4

';...-.'t

. ~

-. 4r.-

_~.w.1.

. i __, t_..

l F.- (;.

I

- ?. ;, ! -.

..;*;*.. n - :- n.-- ;. ;. ;- c-".--. ~ n...;= '.

.-m w

t.

,3

__.,.3..._a w L., _......_.

r._._..

.:--- := ~ w: :- e : :: n -- -- -- -

~..

4.n..._.....

.a... -.... -...

..=,,,,.!...

.t w

,., g

.. ~..=. ;_ :. :=. u-.. T.J. t. i, -._T.,sc,%,

g

.,. 3 7

c,.

. m _*

. _:... *6...J L. _..

., g.,. ! __ :. u.,. :.

_ = _.. _. _... _.... _..

.a.r w._2.r

= =:

e._......,.7...%.

.~.~..L....,,,,,.l"*=,_...

r'*

...s

....* ? ' :-- * ~

O -

,6

- " ~ - - - * * * -

..,L.

l.^.

.% a....

=.

M'---..----*-*.*

- - m

..'.a.

'I

1..

e..f...,._...

A.

.... F. e..ps.__,,._.,.e-.

..lo

... s w w% gQ

_..-.m-..

g.

-gs

.m

.m.

.e..e...._.m.s._e g

I.

.._5 m._

.l.

j.

e. e..-...-

.i.M.....m.e..e. +..-.Im I....N.

_,... =

o....._.

.- e. 6 gm

.. _ = _. _ _

ear *. _-.

_ - =.. - - -.. _ -. -a....-

. i.

?,_. s e,,..

e.-....=_

-t I.,

m.. _,

g *. _. %.

i

-.. _- 1.__

... _. -_: 3 - ~;; ; _ ____. _ _ _...

.. r

.i w

.Le1

. = = =..

e.

-. __g ); *s

.. _,,i : 5.._._...

a.

..._._. !. = r.

. _.. _m_

a,.; m_

.-y.

._ g 3-:

. t =:: :. - - : -... z: =:: - -

.. ~'**^_-- - - K i ~; :.: i.:=

-~~.... -- -----

..=. ;. - - -_... _ _ _... _.

e.

_g__.m._._..._-.._.-._..~.s....v,~...... _ _ _.,. _

i-~ E

.--. '. -. =..,n _r- =,i-.u. u -

7---

_=_g..d'E..._.5,.'-" '. T. :.. -

N.N.N....

M

N' s

.*em

%dG4 9

an. [**".*'**v**:v-.-*!'

""~'..g,,,,,E

--~: a? =^%y.

.... J' a-

- M ::--

_7

.***J.*_._..**.- - - " ' "..

g 4%

g g-

, i.:. _ _w

~O 8

m-wF*..

a.

. _v... _. _..

w.

t

._.m.

m

.-w es

_..y'.

..-.'.-'aJ".

~-*..

' e en..

(

p n

.e W

m.

.g.,

.e O

. a g

_w

.e p-.**

m-- e. - -me

~.*

4

..e m

_-em.-

.6_w-q-.--

J

--._w

],s

,.4

_=*d.w6

,)

_e-.-

w.

e m.m_y-..e

s.. __

.----.,_.-.r.-_

V z.--

ann}

._r n

p

-G.

e g J./

-...s/

O

~

s _..

',C

..-**._/.

~

.?

R*

^.';-***

w --.

_.w,

._,..p-

=d._.

w@

'un$

_p m

e

,,,,.r--,.

gE

-Jar **M.. --.....

--.egm.m.

.e

-. ps e.

gg

-' [ ~ ".u*'"^_

- - ~-

.'8 M, 9p

. - " * ' - - "~..,,

_.-.-_-_.*6

..=

M

- -. e

=es.

.---.g,p*

mS

>5

,,,,.. - -, ' j.

M g.

,,-...e

~ ~ ~ '

~^

=

^

g.o.P

....--..a.e

_,r

,h****

* * * ~ * " "

_,,,,,'s,sp...

j m

a

.. _-.__p --

f

_.-JM~~-*#..*.~.-.

h* (

...__,.s.,,./,

N /: _"

.,s T~.#

_=

" " _ - - - - _.L"".,,

. ~ _.

- ;n q---- :

i, p a

_._.:.~m.=-__.<=__-----

,M A.J

.g

_.ie.d-e.w. m.e w

c.M

.M=

4 g um g-w

%.I

, /.,.,

ss e

g g*

e.

D.'e*,.- -. -.

--ow.-

.ee---.---

-.. )"I k 84 P..._-

6

,M

..-q.-I.

. - -. -. _ - -..=.. -....

,,4

.* 3 e

e s

j 4.#

r.*.m-p

..-..m..ew-

..e.--

.-e

.m

..e.--w e

e-

--.w Q,,

gh

. s k

p-

=

-.-....--e._ -. - + - -. -. - - _

.---e.... _. _ -. - - _. _

k w

y

...e_..

II=7'

- _. _.. _ _.. -.. -. '. ~ *.

5 **

....CI

__"__--h' 4

em.e.-..m..

m,.-.

.i.e

-..m-w.mm._..h..

. m_

.em m

e mtm g

.e.--_.-.

.e w.

4.

_..~... _ -

.... c. y4,.

e--

t_..=.=.".=..=..==-=-:====.=.._:..===-m..i======.=.=...=r....

a

.s t

_.. _..: _ - = : ;.:

=_=.-.2_.~. _~_. : =.._.* ; a-..-

~~. : -' '. :== =_. _ -.:_

c.. :.. __. _.-. =.. - =... t - - D.s., =.

4 *9"' W

... 4 w

~*

?...,,,,.1A * ** -:

y.. ~ :..

~,.-... M. g,, 9.

L..

' C >**,

............_._..._~._.._.._.._.___.._L q 4,,,

e 6

.q.

p

+

E w _-e

g..

n

.s..__;..

....1..

^

g

/./g(

=,J--

}

j 7

' ~ - -

7

---*n..-

n;

' t y &j

,. ~

-=.

m..

.i4 e.

. e4+..

o g

a.

e-v.

m e.

m r-o

.n n

~

i-i m

m r-8't M

DA AM bb h)d M5 Md)

=

!..L. M W 1 k "al Jos w - m Cn c.

sm-17 n

31

,l

.........:-* r...... -

r-.t.._....,*1..

d.

-t-y

.._.n.:...... _...

p,.

N.,.,g e,i.i _,

u..i

. t -

g=

.mu

. 4

..,. t.~e.

..a :. :.. i t -..--.m L..j.

...,... w ll 7..

g :t.~

1 1:

P.

.4,6 0 3 u.

l.

Q.

C, -

m_.i,4 a

t- _.. p! -......42***"_'--

2.'.

? 1 _*

_'..v !_,:'.4.%...::. w : j ; i

.. N., -

=..

._*a- :

'..sg 14 ;-

b::.

s' g. ~

s 3

.N

l n-I

)

H.;

.)

.2 4..---

r. -.'.= : : - ~ ~. - i7.D '. :

7I c.

.. ;-.:.=u

.. : a.. - ; :

', v/-

E.:..

.n. !..: :-

--- - =-

~- - :_-

us :. _-

-~

..: _,.._%,,, i. - : t _. : -

..,..i(,_~._..

,.t

..._. t._...)..

_..1......

., g

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

g ;.

j g

g.,,,...,

, =_= =..... a =._._: . :_.. u. : ~. =_... = -. :

=n.:_t,. _ 2.:

....... _................._r...._u:._:.

c. %. :,,

_..g-

...?.. -. ~ ~ - - -_-%?

.:-*7

- ~ ~ -...

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

_, _.

.....,.s s..

.....-----~!---.

.. s

_--"-**g 8

..h.

-..**: _*. * * " ! ". r_ '*% ! _i.N, 1

, %.;. ;..~., t - - *

.1

.P"..%_...

......T*.

3

___..........._...._A..

.-..(.'....._.._...[t....[._..

..a.

.f.

4

.,t__..

og.,

.f..,_._..

.i..,..._

__1.

.._,,,.N.._.,.__.,.i_.____....._.........,

..._._.._._...._._.._.%.N.,,1

.._...._.____._..,.1..._._..___._.-

_..p

.s.4

_ ~

... Vr

,1.__._...._....__...._.___..,....--a.=Q;"'.*-.S._____.,.._

r~2.,n_.._..._.___..__.._...__

w

...,...st a.*_'.L.._..

m..

.->--..-...._..__.,*r.... ', ',

v s. __,Q..._.......-

.L _g ? - _-.; -m.-=t :. : = = : =.= ---- r - = :- =. - _. : T.

.--r 5:

1._.4.._.n--- * : =_. - 2 2- :. _-....b.:

=.:.._

,.:-2

. m.4... -..:, J. _%.. - :

w

,,...::..: - 4. : ::. - -- - -- n. ! u. = x -- __.;

a 3

.,_._s

.__.=%_.,..N...._.._._.

g g _.,

... _._..._a. _ 6 ____ _

~c...-.,___,-----q-g-_

-+r ----"..:::: n.4 **p:

j

_._ 4:. = i

". ;~ :-* *n

. ___ _ _ _.. _"t., - m :t -

_ s TM :

:. - _ *%.% : _s ::....

._.t

.. ~

. m

~ __ y..

to T*,

. _. i.;_.. _ _ _...

.~,,.

v

..-e d

_=.

lLi V)

=.-

9 F

W tr).g-

~q m-

-'s a:.

G.e.

h

. _ +. -. -

1

.m l

\\g

~#

. /*

<_e.

b w

VI g4-

~A... _._

g.

-- =:

C J

t.)

_ _.x :.. -

w

_ --._,,, _.-_.. / ___J _....

/".

.mp w

, --- a

_. r

+

2

.-.a

,, V_. _ v:_f

.o

-1"*

" " ^

-_._F*.~.7-'?

E

..=

2, u__-.

.-[._

,...,ar**-

_._J*.-'.

y,a Q

.a e. ]

= :' _

. _..,,,f._,. j --

+

_,,,,r_._---,_/.

y,,.f a:- :

_.,,&=---

_._ s &* s.. w r,,* _

g{

_.xs__._____e.r_._-..._ ;;,;,; ~ -

.s,,__,.,,,,".'.---

p.,,,:" -

n.,

p.

. _ _., * =

a,--

~.

r=../...**._..._.=~*.=_-;-.. _..,

t--

_- - _, : w -

~_7_',,_-y.

_. --- Q3 _ r d

m-. - -.;,;._______-.

1=-

Oe t___ s.,#.N.

.3 k... w._--

c.s

. ;;,,, _ ~.: _._.

_m e

e 3_

i i

6

_. 0.

: g.! M._..;==-

y.

__ _.CL.w,e y

s 1

_. _...._..._.__....m.

s t.).

r--...-_.__._

W

_ _ _ _.._.._._.:.:_.u....::=::--.._..-=_~_=..-.!_==_:-

. _. = -. _ _ _- - - *

~~~

.. _-._:.. u. : : :._.. _

4,p

'-~=.'.=._..=._;.

i ai I

. _....... g....

1 t

.._6

_ _. _.... V

"""1. 1

.' *- d - U

'--'-*-=~~~..""--."-:_.-*~~~!=::.*:=:.._.----_..._..-------~~~-

4

_.Z

[

_ _ +. =_.: ;

_;;u... Q.._: n

-:.--=.:.=:.=;__=----=. --:_=.==.

..y =:,

==_:=.:_---ru--_---

- --- - r -- - = = : u- ; -. _ _ ; _ :. = u. u... :.._ u. _ ;.

f.i.

.,,../I

,s,k *. _.

Le 1

i y %*..

s.

i m

p._.__._...._..~_n.__

. _. _.. -.. _ _.. _ _.____..___.E., _.;.

e..

y qQgi p

.. : = M.~.

f

. l 3

7N p

_. ~

e.=

g i

s._.

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

q

. ";-..~ '

'/

~

t.

_.. ~

..._.2 L.

-)

- - - - -. - --_* l

... i

'1.__.

~

_.'.._'-.e

_mI 3

e o

m g

w

~

N r-y' 0

e.

w u

7 M

M 6

l ' s' t

r. m m,,

s m a

, n ed b#

.)Mdj e/6 89/6

.a> 8 9 e.

,y I'

b& W~O

{A[O.

M* U

j...-

... ;. : = P " ::.. : ::-- - 9== n n,,,

y d' b..,,

r '. :- - ]:,m _ ::c =::i. =.S n

"- 4 g.:

r:-

e?..' v s!

__ ?'t.M....

_b.,

M

._.7 J

-_7 r

-2 O,a t "- t a

2. t

h,

y,1 q.

.6 c 3e. r n r -~.,t.,..

b

[j

.1:

W.,,l

. %., d s. t

.a c, T -, -

....n,.

. z_., ; _..

p-

.h6y a :-, '

.,D Q -. :., Q.r..

'----~o.x.,--

_2 w

~

n

...l..

.... f,.4 3

,m

t.,,) N. _-

,...~@

__or

w. e.,. :

1;.. - '7.- a,y._. j...

%t

- - - ~

.a 4 -

. g.

~

g g

..............-...;....... -.1..........

~ '. '.

/%

A :grt:.

..3-

.- -- Y 2

r.-[,. $ n,--,

. n. :.... ::;n;.

c.

w,-mu

\\

_:. c.-

un 3 e.

g i

.w

=.- : -

---.!:....=._.1

, L

'*r _.. ::..... :. a. J.. T.:.;-

., ; j.. _.....1..;., r. 4 r

. p ---..-......-

--- : =. p y.., c r.__...,.. :-... -

w/

. s

~--.: c :..... =.-

g............-

.,.... - ~ - - -.....

n---

__ _ p 22 _% 2s::n ::; w-}.

... v_.;; ~_~...._.r..- M _ (.e t -..:: s; : :---. t==:..__= = =..,.=:..._ _.. _.. _ _ _

- -* g* :.J,,;

it a: Q 4...:. ara.

--- -, _;.._.:_:.at : ;

e. -ly1_ =_ r n.4.. ::.Nj l _=; -

-- " p

n.,u

?

. - ; - ".rr -

---"-" -~ - _T -t u

_a 2.=

___.t

- - H_,1

..L,. 3

.3.:. :- -* :-*

t J

. _. -. -. ". -... =.. " -.. =.

=

4.. _....,%m '. ; ; ;%:.:.. ; =. :.

"t...

p';m... M.,--".

_ - - +

u."

L I.

-~~-

-~

.-..e.z.: ; :'. : t-. -.:---

--...6.4__.N'**--

M...._' w -.'__ _ -- - -

W 3 I1 =- n-r..;N:

S.1 :.

. ; *,. : 2: *,

-.. -'---" -==: n= :.; t - --- - n : :.- _. t*

i.r

- - - * -N;

_._c-

.. _.. - - - - - - - - - - - - - - - - + _ _ - - - - -

L.

. _. _. k. : A.. r.. x %. :t..::.... -.. _ :=. _..: _::. ~_.-... =... =. :..~I :n...;.- :. ;_r.

. _. _._.. n 6

. -.....[ :.;!L' *-""*%,

'U-* W t

.=:.~..w-+--~=...-. _. - --._. 2.;. _..._,rw 1:0. -.j, ".:,I __.:.

4 N.

-;i.__._.__.______..

tn

-.:r w~~.: % _........

-.;;.:...:J.

3,;. :_ q q ~s w

=.2.

r p = n..

-- i--.-

[ s,.:d,: ___ _: : -. --

,, N s..._

. r.

-.._..m.

~-- - N. ~. A_.-,,,5k. h 5(-

_ _ _.5$5^bE * ---

$.. 7 T ---5 o -

Q, _.t

~

y. -

_g:: -

R-1 w x=r,..._._.___..._. :

. : : _.-- s :

=L.

~~

s. ~ n.

_=_. r --

n __r o:-(:: %. - W ;:.=r:=w-_

u -_ _._

-e. : :.%.,

... c.

22: c.m:. ::

- _..__:=..

~.

.. _... _=__ q %._ :._

.rn:..=: :.- --*.--..r :r

__..m_.__..__

r ::.. : =N g

J:: ::: __. :w:O

-i Nie:2_, C.A_,..

g m_

~

z.

+. : a -

r. ---- ~ s :.:

ti.!

q

-h l

la.J.

q,-

q n==.

c.__._..nzw.

4

._.,_=v.

g;,P'

..s

=.

W i

g

~ m.

._._.,s.._._...u.

.y l

r i g.

-_,,.c 3 m.-wJ f...__-..

.~

3

- - ; =_=._-.: _:.. -

-.-_s-w

.,,1

-/

e- -'

=_

^

3

., -_ ?., ?.. _-. =- i '

ens

=

.,$_.' 5?--f g

e y

-- 2

_. r.

+

- ^

-..,- n.;.r___

4 p

U.

a s

_--u..__.. f

T- -.. r%__ - -

t >

.s._ ;: f._=.:--. ~ - -

- = - - -w

. c w..2;T 1g u_

.= :

-~'

~. _

e.

n.7. :.e-

- - - -. = _

n 14 s-

_s.

.s

+,,# w: r.._

/'

,.,,6-

.__,,.,.,s

_t.

.?,.:. -

y L_ _ _.

---c.

._xn :--- - - _=.,,; --i 7

. ;;;.r=_".=;

i;

_l-_

=_s#A,--=a.---..{.---.__

= --

-r--

n

s.

_ ~~_ _ _ -

.._._..M:-*

w*

t.__,

a

- %.. d _--. th

-~

~~

...e..=,-._--. _ _ _ _ _.

.J

=_.

=.

_ _ _ _ _.. _ _ _ __. r-3.._..

a,e. u e

w,, n,.-_ y

=

e _. __

p v

l

'{

---::----=.__.

.... 5W.-

1

~~

L

/

_ _ _ =.. =. =. _ _ _ _ _. _.

=m*---.____-__

r--.

,_,-;;-_-----c=_

._...-..g z.= -- - -- r - -- - --

- ; =. 4. c. :._ =. a. _ _.--d

- - - - - -x.

h,_._.. _u.:. _._.. : _ : _=_= - - -c..L.~ -..Ei.b_ _a__._ : :_ i __r-'22_E._I.'_. ~-- _' : _ : _.-._.u i_C".. __ _____. u._=__:.-- 3. '~~i. :.Ti. s' ;.'_~ ~ ~ !... >Z..

~

~~

~ _ _

{

.2 3-".._: _ :. _ _.s a._= ". _ g'. q :

k:-----i ' --_ n =__.:=- : =.. _-- h- = r --- : -

Uri ; :-

. r. _ _ _ _ _

_6:

.- r -_

. 93 y

.._r._.=.._-_.._,__.

-.._c.___.

c -- = -

r: -

c --- : - ;-,

,m

. y, H:., -

= _. _.., _.e _

_: 2._;;=_=..._..___...._...a__....__:

..._._._....___...._......a._...-_....:___._......__._..._._....

.g c.._.,.

., *q p

_=.

.. n=.=

..

.-r..

": _::: E =r...,

u.

7

'...a

. ---. =.;:::: =. : r =- -. :-. :. _...... : :::.. :g

r

_:. = _.. = - - -- m : n = : n = =:

- - - - - =

ur= =:-

i r - : --

e

l...... __.. *.

_....._2

[

j p :--

72.:...,

pc.

p h_ -..

D

A_. ! C.:.

l I

,..... : j. _ __.~.. _.. _ _

- _ ~.

m------

.a t.

7.

o R

Q M

M Q

M_

_ _ _fl P

1-D

-- o 1 C

9

".2 '

r-

[

m n

pCs

.';13.m c= - %,o.us.::, mag pa% g a' A 7... i.p J

~

c

o l

w 45 o

,p A_l___ A C, k. _,n,__

2 d

1 a u w w u w w.a :)

(' )

o I) 4' C U

,* L a

WJ~<

w U

w o

o (b

4:

4r U

QuuGca n

Ik a

4) o o

o kk o

o I

o Nh I

(

b II o

at I

l

$?

l

?

l 0

i l

.j t

l

,1 I

1 l

l l

=l 1

1 I

SEIStiIC ANALYSIS FCR 54 INCII ti i

NUCLEAR PURGE VALVE i

l l

I l

2 1

i t

}

l l

1, i

e w--

,w-w m_

e-,--o--_--- - - - - - - - - - - - -~

l TABLE OP COI; TENTS 4

PAGE LIST OF FIGURES 1

j NOMENCLATURE 2

SUMMARY

TABLES STRESS LEVEL

SUMMARY

20 FREQUENCY ANALYSIS

SUMMARY

26 VALVE DIMENSIONAL DATA 27 STRESS ANALYSIS i

INTRODUCTION 30 END CONNECTION ANALYSIS 34 l

BODY ANALYSIS 35 DISC ANALYSIS 40 1

i SHAFT ANALYSIS 41 & 42 DISC PIN ANALYSIS 43 & 44 l

SHAFT BEARING ANALYSIS-45

" ~ '

THRUST BEARING ANALYSIS 46 i

BOTTOM COVER ANALYSIS 49 i

OPERATOR MOUNTING ANALYSIS 51 1

i TOP TRUNNION ANALYSIS 60 i

FREQUENCY ANALYSIS 63 i

t 1

i Y

i

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

.._----,.,--_---,___,n-..-,--

i_ _. _ _ -. - - - - - - - - - - - - - - - - - - - - - - -

I i

l LIST OF FIGURES i

i PIG. NO.

TITLE PAGE i

1 VALVE BODY SPATIAL ORIENTATION 32 2

BANJO ASSEMBLY 33 0

3 PRESSURE AREA ANALYSIS CROSS-SECTION IN 37 BODY 4

DISC HUB BLOCK 44 i

5 THRUST BEARING ASSEMBLY 47 i

6 TOP TRUNNION MOUNTING 52 7

TRUNNION BOLT PATTERN 54 8

OPERATOR BOLT PATTERN

' 56 9

TOP TRUNNION ASSEMBLY 61 i

l

!O 10

^

1

g l

i i

Y

!O 1

NCNENCLt1TUPE i

i The nomenclature for this analysis is based upon the nomenclature es.tablished in Paragraph NB-3534 of I

Section III of the ASMS Boiler and Pressure Vessel Code.

i l

Where the nomencla ture comes directly from the code, the i

reference paragraph or figure for that symbol is given I

with the definition.

For symbols not defined in the code, the definition is that assigned by Henry Pratt Company for use in this analysis.

i f

i i

d i

i l

t e

i i

$ 6 4

I i

I 4

l i

i 1

k l

I i 9 i

i,

i ANALYSIS NOf tENCLATU P.E 1

i A,

Effective fluid pressure arca based on fully I

corroded interior contour for calculating grotch primary membrane stress (NB-354 5. l (a) ), in A

Metal area based on fully corroded interior contour ef fective ig resisting fluid force on Ag 4

(NB-3545.1 (a)), in l

A l A

Tensile area of thrust bearing adjusting screw.

2 2

Tensile area of bottom cover bolt, in j

A 3 9

A Shear area of bottom cover bolt, in' 4

A Tensile area of $runnion bolt, in S

^6 Shear area of trunnion bolt, in 2

A Tensile area of operator bolt, in i

7 2

A Shear area of operator bolt, in 8

g A

Tensile area of hub retainer bolts, in g

2 A

Shear area of hub bolts, in 10 i

2 j

A Tensile area of hub bolts, in yy 2

A Shear area of thrust bearing retainer bolts, in 12 A

Tensile area of thrus t bearing retainer bolts, in 13 B

Unsupportad shaft length, in.

y l

B Bearing bore diameter, in.

2 B nne ensile area, in.

3 l

B Bonnet bolt shear area, in 4

2 B,

Bonnet body cross-nectional area, in a

B Top bonnet weld size, in.

6 t

B Botton bonnet wcld size, in.

7 B

Distance to out:or fiber of honnet f rom ~,h3 E t on 3

y axis, in.

i l

k I

ANALYSIS NOMEMCLATURE l

B Dis tance to outer fiber of bonnet from shaf t on 9

x axis, in.

~

i j

C A f actor depending - upon. the me thod of a ttachment of head, shell diminsions, and other items as listed in NC-3225.2, dimensionless.(Fig. NC-3225.1 j

thru Fig. NC-3225.3)'

C Stress index for body bending secondary stress b

resulting from moment in connected pipe.

(NB-3545.2 (b))

I C

Stress index for body primary plus secondary stress, P

inside surface, resulting from internal pressure (NB-3545.2(a))

J C

Stress index for thermal secondary membrane stress 2

resulting from structural discontinuity.

C Stress index for maximum secondary membrane plus 3

l bending strest resulting from structural discontinuity i

)

C 6 Product of. Young's modulus and cgefficient of

}

linear thermal expansion, at 500 F, psi /"F (NB-3350)

C Distance to outer fiber of disc for bending along 7

)

the shaft, in.

C Distance to outer fiber of disc for bending about 8

the shaft, in.

d Inside diameter of body neck at' crotch region r

(NB-3 54 5. l(a) ), in.

D Valve nominal diameter, in.

y D

Shaft diameter, in.

2

{

D Hub retainer bore diameter, i n.

3 D

Thrust collar outside diameter, in.

4 D

Thrust bea ring bolt diameter, in.

5 J

j ~

D Cover cap holt diameter, in.

6 4

l D

Trunnion bolt diameter, in.

7 j

D Opera tor holt diameter, in.

g j

D Bonne t bolt diame ter, in.

9 1

4

..g--ww.-

-.,-m,r,,--,,.e,

_.,-..,,vr -,

.,,-.,,pww,,ww,,wwy,,w.,,,,.,,-m,._,m._..

'-m-

ANALYSIS NCMENCLATt!RE D

g 10 eter of thrust bearing adjusting s tud, in.

y D

Outer. diameter of trunnion, in t1 E

Modulus of elasticity, psi F

Bending modulus of standard connected pipe, b

as l

given by Figs. NB-3545.2-4 and NB-3545.2-5, in.3

l F

1/2 x cross-sectional area of standard connected d

pipg, as given by Figs. NB-3545.2-2 and NB-3545.2-3, in.'

F Natural frequency of respective assembly, hertz 3

F W g --Seismic force along x axis due to seismic a$celeration acting on operator extended mass, pounds.

F W g --Seismic force along y axis due to seismic ahcEleration acting on operator extended mass, pounds.

Y F

W 9 --Seismic force along z axis due to scismic g

3z 3

acceleration acting on operator extended mass, pound.;.

inch per secon O g

Gravitational acceleration constant, t

D)

\\

G Valve body section bending modulus at crotch region b

3 (NB-3545.2(b)), in d

gy section area at crotch region (NB-3515.2 G

a ve (b)), in G

Valve body section torsiogal modulus at crotch t

region (NB-3 54 5. 2 (b) ),, in g

Seismic acceleration cons tant along x axis x

g Seismic acceleration constant along y axis

[

g Seismic acceleration cons tant along z axic 1

h Gasket moment arm, equal to the radial distance 9

from the center line of the bolts to the line of the gasket reaction (NC-3225), in.

H Disc hub key height, in.

+

y H

Top trunnion bolt square, in.

2 H

B ttom trunnion bolt square, in.

3 Q

t 4

,-,e--

e-.-

-..~r

-,,--,e-

-,,. - - -,, ~,,

ANALYSIS NOjlEt!CLATURE 1

H Bonnet bolt squarc, in.

4 H

Opera tor bolt square, in.

5 1

H B nnet bolt circle, in.

6 H

Opera tor bolt circle, in.

7 H

Bonnet height, in.

g H

Actual body Qall thickness, in.

g I

I Bonnet body moment of inertia about x axis, in' y

4 1

Bonnet body moment of inertia about y axis, in 2

I Disc area moment of inerti'a for bending about the 3

4 shaft, in I

Disc area moment of inertia for bending along the 4

4 shaft, in 4

I M ment f inertia f valve body, in S

4 I

M ment of inertia of shaft, in 6

I 7 Disc area moment of inertig for bending of unsupported flat plate, in 1

1 M ment of inertia of top trunnion plate.

8 J

Distance to neutral bending axis for top trunnion 7

bolt pattern along x axis, in.

i J

Distance to neutral bending axis for top trunnion 9

bolt pattern along y axis, in.

J Distance to neutral bending axis for bonnet bolt 3

i pattern along x axis, in.

J Distance to not-trel bending axis for bonnet bolt 4

pattern along y axis, in.

J Distance to neutral bending axis for opera tor bo L t 5

pattern along x axis, in.

1 J

Distance to neutral bending axis for opera tor bolt 6

pa ttern along y axis, in.

K Spring Constan t M

Di s ta nce o f 1:onne t lec from shaft centerline, in.

y i

.,,nr,-n.---

-,e

,ve-,--vs.

-w-

-m---

-,-,-,.-,v,,----

m

,,m,

-,,---w

.=.

1 AMALYSIG Mf:MlWCLATURE K

Thickness of disc above shaf t, in.

2 K

Length along : axis to c.g. of bonnet plus adapter 3

pla te assembly, in.

i j

K Top trunnion width, in.

4 1

i K.

Top trunnion depth, in.

a K

"* 9 E

U""

6 L

Valve body f ace-to-face dimension, in.

y L

Thickness of operator housing under trunnion bolt, t'.

2 L

Length of engagement of cover cap bolts in bottom 3

i trunnion, in.

j L

Length of engagement of trunnion bolts in top 4

trunnion, in.

4 L

ear ng ength, in.

5 L

Length of shaft after retainer groove, in.

6 L

Length of engagement of bonnet bolts in adapter 7

plate, in.

i L

Length of engagement of bonnet bolts in bonnet, in.

8 L

Length of engagement of stub shaf t in disc, in.

g L

sc hub key length, in.

10 L

Top trunnion weld height, in.

yy m

Reciprocal of Poisson's ratio l

M Mass of component W3(% Z +g Y operator extended mass seismic bendink r_to8e) n, t about M

the x axis, acting at the i

bas <t of the opera tor, in-lbs.

f.

W ht_Z

+g,X operator extended mass sei n'.c bendi'n@ mdm3n) t about M

3 Y

the y axis, acting a t the base of the opera tor, in-lbs.

l M

(M Ic Y +g X

), operator extended mass s e i smi.c bc2diUg moEcht about the axis, in-lbs.

fE M:p FfT 5, operator e:< tended marn sci smic 1: niiin<r mem. :t at.w the a :: i ::, ac ting a t

nc ba t t : t or the atID :<'r

l?.t', in-116.

1 P

! e se

- =~-~.-.

,.. -, - - ~

->.-n__-,-,,,.-,_,._a-,,,n-,

-.,_,g.m--,m

.,..,,,,,,.,y_,.,..,-.r.n

,_,,y,,

,,--,my,.m-,-,

i ANALYSIS NC]1ENCLATURE RF My+FxT5, operator extended mass seismic bending b

moment about the y axis, acting at the bottom of

/

the adapter, in-lbs.

Rx Mx+Fy(T +H 5

g)+gyW K operator extended mass seismic bending moment abou,,t the x axis, acting at the base of the bonnet, in-lbs.

Ey My+Fx(T +H )+glW KSo$e,nt about the y axis, acting operator extended mass seismic be$ din 5

at the base of the bonnet, in-lbs.

l M

Bending moment at joint of flat plate to disc hub, 8

in-lbs.

N Permissible numbgr of complete start-up/ shut-down cycles at hr/100 F/hr/hr fluid temperature change j

rate (NB-354 5. 3)

NA Not applicable to the analysis of the system.

N Number of top disc pins y

N Number of operator bolts 2

N Number of trunnion bolts 3

(~~/

)

x_

Pd Design pressure, psi Pr Primary pressure rating, pound Ps Standard calculation pressure psi i

Pe Larges t value among Pe.b, Ped, Pet, psi Peb Secondary stress in crotch region of valve body caused by bending of connection standard pipe, i

calculated according to NB-3 54 5. 2 (b), psi

(

Ped Secondary stresc in crotch region of valve body caused by direct or axial load imposed by connected l

standard piping, calculated according to NB-3545.2(b,

psi

~

1 Pet Secondary s tress in crotch region of valve body caused by twisting of connec ted s tandard pipe, calculated according to NB-3545.2(b), psi P

General primary membrane s tress intensity at m

crotch region, calculated according to NB-3 5 4 5. l (a ).

psi e

P Primary membrann s tress i n tens i ty in body wall, r c. i m

a

ANALYSIS NOMENCLATURE Q

Sum of primary plus secondary stresses at crotch 9

resulting from internal pressure, (NB.3545.2(a)),

psi Q

Thogmal s tross in crotch region resulting from T

100 F/hr fluid temperature change rate, psi Q

Maximum thermal s tress component caused by thgough T1 wall temperature gradient associated with 100 F/hr fluid temperature change rate (NB-3545.2(c)), psi Q

Maximum ghermal secondary membrane stress resulting g

from 100 F/hr fluid temperature change rate, psi Q

Maximum thermal secondary membrane plus bending T3 strgss resulting f rom s tructural discontinuity and 100 F/hr fluid temperature change rate, psi O