ML20062J496

From kanterella
Jump to navigation Jump to search
Responds to NRC 790927 Request for Commitment to Implement Valve Qualification Program.Forwards Documentation Resulting from Allis-Chalmers Analyses of Butterfly Valves & MPR Associates Analyses of swing-check Valves
ML20062J496
Person / Time
Site: Big Rock Point File:Consumers Energy icon.png
Issue date: 10/24/1980
From: Hoffman D
CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To: Crutchfield D
Office of Nuclear Reactor Regulation
Shared Package
ML20062J500 List:
References
NUDOCS 8010290285
Download: ML20062J496 (10)
v • d • e


Text

-_-______

eg:Q N

"i CORSum813 M POW 8r A

B Company way

~~w qr i.,...

General Offices: 212 West Michigan Avenue Jackson. Mich.g,

'91. Area Code 517 7HB-OS50 b bl - i.

l 1

October 2h, 1980 i

Director, Nuclear Reactor Regulation i

Att Mr Dennis M Crutchfield, Chief l

Operating Reactors Branch No 5 l

US Nuclear Regulatory Cocmission l

Washington, DC 20555 DOCKET 50-155 - LICE';SE DPR BIG ROCK POINT PLANT - VENTILATION VALVE QUALIFICATICN PROGRA'4 FOR CONTAIUMEU'" PURGING AND VE'ITING DURING NORMAL OPERATION NRC letter dated Septembe~ 27, 1979 requested Consumers Power Company to commit to implement a valve qualification program on an expedited basis and provided guidelines to be used as the basis for the qualification program. Consumers Power Company inadvertently failed to respond to the Co= mission's letter but did proceed with the requested valve qualification program at that time.

The Big Rock Point containment design requires frequent perscnnel entries during operation to conduct activities as specified in our submittal dated December 17, 29T9 Therefore, the ventilation system was designed for contin-uous ventilation to provide the containment atmospheric control necessary for personnel entry during operation. Continuous ventilation results in the venti-lation valves being open during reactor operation and subjects them to the possibility of DBA-LOCA fcrees being dynamically applied during required closure.

The original purchase specifications for the ventilation valves only included static differential pressure requirements; therefore, valve qualification for dynamic closure as requested by NRC letter dated September 27, 1979 was required.

Big Rock Point's containment ventilation system uses two types of valves for contsirment isolation and vacuum relief functions. Butterfly and sving-check valves manufactured by Allis-Chalmers and Atwood-Morrill, respectively are l

provided for both the inlet and exhaust penetrations of the ventilation system.

I The butterfly valves (CV LO95 and CV h097) function as primary isolation valves f

during accident conditions with containment isolation redundancy provided by the sving-check valves (CV h09h and CV LO96). The attached drawing, number 07h0Ghol25 Rev. R, shows the system configuration with the isolation valves exterier to the containment structure.

THIS DOCUMENT CONTAINS P00R QUAllTY PAGES 801029078

[

_a

i Mr Dennis M Crutchfield 2

Big Rock Point Plant October 2h, 1980 Consumers Power Company contracted both Allis-Chalmers and Atwood-Morrill (supplemented by MPR Associates) to perform analyses of their respective valves'. The following considerations were made in the analyses:

f a

1) Both types of valves use valve operators 'that open with air pressure and close by use of a spring internal to the operator.

l Therefore, valve closure during accident conditions has an l

increasing rate of closure due to the spring force and AP across the valve.

2) The flow direction during accident conditions thru the valves

[

is such that closure is added. In the case of the butterfly valves, a slight tilt of the disc i,n the direction of closure is required to assure closure in the correct direction.

t

3) Each valve analysis considers failure in the open position of the other valve in the tra'n as the vorst case for valve closure (ie, this assumption provides maximus AP across the valve being analyzed).

l h) Operator pilot air is vented outside of containment; therefore, containment back pressure effectc on the operators are not i

applicable.

t

5) Valve closure is dependent on spring force and not air actuators; therefore, no accumulators are used in the system.
6) Torque limiting devices are not used on the valve operators.

l

7) The effect of piping systems was modeled by Allis-Chalmers for butterfly valves for their bench testing program. This date vas then applied to the Big Rock Point butterfly valves assuming the full containment accident prescure acts on the valves. In i

analyzing the sving-check valves, MPR Associates modeled the i

Big Rock Point piping system in order to generate the closing velocity of the dise during the DBA-LOCA.

J

8) The effect of butterfly valve disc and shaft orientation to the f

fluid egressing from the containment was addressed in the Allis-i Chalmers bench testing program.

Allis-Chalmers demonstrated the operability of the butterfly valves by performing a bench testing program on a similarly designed valve and extrapolating the data to the Big Rock Point valves. Results of the bench testing program were i

provided by Allis-Chalmers report VER-0209, dated December 17, 1979 Extrapo-i lation of this data to the Big Rock Point valves was provided bv Allis-Chalmers letter to Consumers Power Company dated March 14, 1980 which reconmended an 0

opening angle of between 80 - 85 for CV h095 (replacement valve) and 75 for CV h097 (original valve) due to shaft torque limitations. Therefore, as reported in update to LER 79-028 dated August h, 1980, the two butterfly valves have been mechanically restricted to an opening angle of 75 to assure operability during DBA-LOCA conditions, t

Mr Dennis M Crutchfield 3

Big Rock Point october 24, 1980 Atwood-Morrill and MPR Associates Inc were contracted during November 1979 to perform an expedited qualification program for the sving-check valves. MPR performed an analysis to develop the maximum disc closing velocity under DBA-LOCA conditions. This analysis resulted in the identification of an overpres-sure cendition in the air operator resulting from the rapid closure of the valve. This condition was identified by LER 80-013 dated May 23, 1980. Cal-culations were performed by MPR to determine an acceptable opening (15 ) for the valve. and modifications to the air operator which would make full opening of the valve acceptable. The valve was mechanically limited to the interin opening criteria until modifications to the air operator cylinder could be made. Revision 1 to LPR report MPR-6hh, dated June 1980 provides the results of their original analysis and the additional analyses to determine acceptable interim opening and the effect of the modified air operator cylinder (increased volume by three (3) inch extension of cylinder). Concurrently with the MPR effort, Atwood-Morrill developed the maximum closing velocity that the valve and operator could withstand. This effort was subcontracted by Atwood-Morrill to John Henry Associates, Inc.

The analysis identified the same overpressure condition in the air operator and developed a maximum acceptable dise closing velocity that was greater than the maximun disc closing velocity calculated by MPR indicating that structural integrity of the valve was assured during DBA-LOCA conditions. Technical review of Atwood-Morrill/ John Henry Associates analysis has revealed areas in their analysis that required additional work, specifically the plastic defornation noted in the disc and disc arm. This additional work is currently proceeding with completion anticipated by March, 1980. It should be noted that MPR and Atwood-Morrill/ John Henry Associates do not expect the additional analyses to disclose any additional problems with respect to valve integrity.

The current opening positions for the butterfly and sving-check valves are 75 (full open - 90 ) and h5 (full open - h5 ) respectively as reported in the 0

update to LER's79-028 and 80-013 dated August h, 1980 As requested by the staff, Consu=ers Power Company is sending six (6) copies of each of the following documents considered to be in final form to the Director, Nuclear Reactor Regulation with this submi+tal:

1) Allis-Chalmers Report VER-0209, " Test Report on an Allis-Chalmers 6" STREAMSEAL Butterfly Valve in Air concerning Nuclear Containment Isolation Valves", dated December 19, 1979
2) Allis-Chalmers (Kopey) to Consumers Power Company (Monshor and Hartman), letter dated March lb,1980.
3) MPR Associates, Inc Report MPR-6hh Revision 1, " Big Rock Point Nuclear Power Plant-Dise Impact Velocity For Containment Venti-lation System Check Valve Closure", dated February 1980 and Revised June 1980.

I l

1

Mr Dennis M Crutchfield h

Big Rock Point October 2h, 1980 Upon completion of the additional analyses for the sving-check valves, the revised Atwood-Morrill/ John Henry Associates Inc analysis will be submitted for the staff's review.

David P Hoffhan (Signed)

David P Hoffhan Nuclear Licensing Administrator CC Director, Region III, USNRC NRC Resident Inspector - Big Rock Point Attachment e

I i

m a

/

ALUS-CHALMERS D d*6

(%

BOX M 93

(.,

RICEiyED SEP 4 1980 YORK PLANT V ALVE olvissoN 99 9

D D

NUCLEAR LICENSING

. o c j' March 14, 1980 Larry Monshor and C.-J.

HarEman l

Consumers Power Co.

Big Rock Point Nuclear Plant Charlevoix, MI 49720

SUBJECT:

Allis-Chalmers Containment Purge Valves

REFERENCE:

Consumers Power P.'O,;60904-0

{l Gentlemen:

I

' 1 Thank you for your purchas'e order.

Included with this letter are two sets of documentation.

The notebook details the overall test program and with O

the aid of the charts and graphs one should be able to predict the dynamic torque of any similarly constructed Allis-Chair.ers valve.

The other package, which ic four pages long, specifically addresses your valves, and a closer look will show that we have modified our initial recommendations.

Briefly, here's what the data shows.

CV-4095 Originally we recommended that this valve be limited to 45 open because at this angle the dynamic torque begins to exceed the operator output torque.

Nothing has changed in this regard, however a more detailed analysis of the test data shows that during a DBE, the fluid flow through i

the line will by itself tend to close the valve.

The effect is so pronounced that an opening angle of between 80 -85* is now acceptable.

At these angles, the dynamic ~ torque even though beyond the capabilities of the operator in magnitide, will actually cause the valve to close faster during a DBE than if the line velocity were zero.

Nowhere do the dynamic torques exceed operator rated capacity.

(Operator structural integrity is

-s

}

not a factor).

5/pmm/0524

._~. ~. _.-

.~r e

i N

%. S oC 6

[\\

. s -

CV-4097 This valve as previously recommended should be limited to 75' open because of shaft torque limitations.

We sincerely hope that these new results will help your containment purging problems.

As alwayt, please call me if you have any questions.

Sincerely, 4

Theodore Kopey, r.

l Application Engineer i

3 t

i, i

TK/pmm

^'

j

~

cc:

John Popa, Consumers Power Larry Retters, Consumers Power y

t Frank Anderson, A-C York f

I f

4 4

V

.s I

s I

~

(

i

?

.rmen.

t y

=

t 4 I

t-5/pmm/7864

'=

i l

z

' I r

.~

on. 'b 09 G 1-t Y {} A ] 6 d N / W 6 k u.) 8' E B /6 f o d d 0 [

l$'.00

~

c

_,0

.. ~.

C St]2 fr'-fl?ldy PTVd 0t)6 5 - V W, W 0 ll Y 6 S WtUb V n

.o.awino nu..an u T HO W U.3. A.. A.C CA50M ANO II

'f

)

M MM v

ENGINEERING CALCULATICN SHEET M

N/h i

m...m..

/ sod -

i l

I l!

ii i

i i

i !!ii!ii;I i-1 I:

I i

i i

!i i

j i

I i

l l -l I: i i

t: i#4

/ 940.

f l

l l

I l

l l

l l

f I

!f l

f.

i'.ia.b

/ Zee i

i t

i i

l i

1 l

i i

l f l' Tc f l

l l

!f l

l l

I h

l i

i l'l i

l i

i i

j l

l l

I!

I

! -l i

i!{

I !

!. 'E

~

i.

I i

l i

i i

Ii i

i l

i i -l..i-id l

i i

i j

l !4 110D I

I joog.._

_,M__Od b

_O [ I i

I l# I l

I I Hi i

!l i

i I

i i

i l I 'i l'i

~ ~'

i i

i i

I i

!!Ii':

,ao 7

i I

l

!l i

l i

i i

li I

i o.a A

~

h s'

f

.I I

f l

l

!N

.I I

k t( [,, 3!

l l

Iii i

i I3 II; li!

i i

i l '8 i

i.

ii i\\ 1 i

l l

i 3

l l

l h_.-

'i!

r La

-i lxiii i

i 1

i l-i i

i i

i!

i g

ll ll' Q Il1 Q l

i l \\;

i l

i !iii!

i t

l-l i

t+.

i /;

i;I l

Il l!

'l

!,.j l-J/!

l l

l l

l l

l I

I l

f f

I l

'd 4

0 l

l

!I i

l- !A!

i i

1 i

i i

3co l

l l

l l l[l i

l l

l l

~

I I

I l-t-/ I i

l l

l i

i i

i i

i i

i l-i zoo

-y

./-

G:?,_Sev' i

i

.I l

f I'

I l

l l

l f

I.

l k

I l

l l !' l

/00

<-t f

i f

f

~ e i

, - YM).42'~-Tim /D$ rbr lose ~i

/'

l 2

r

-m O

j

' 40 5'o 1

(N h

Zo !

Jo -

t, '

76

_So

' To.

o (v) k l

j l

I r

l,

,i y

S l

E Y$

kh

~~h (C1'h & __

I T

^'

-L ]-..=

=...--.......-

D**

o a 3

b O!.It Cu}TOnlE ('o,v s a u m ' L a i-+-so

- / c. L 782 LS 44 FINM

$USJECT

  • /

l Os AWIMG Hum &lt LITHO $N U.S. A.= A.C CALCULAftD SY g

(A.)

NhyU

\\. /

ENGINEERING CALCULATION SHEET uus.cm-m

_ _ _ _ _ _ - _oaa ciSi

___8_dY.WMI r

5 l

k 1

i

'.jfL_l/f_W'O. \\ 01/WO94 -,

h_."&~ V-EX//adsV~1

'I

\\.

i j

l i.

i.

t, i.

4

.ii i,

i i

i i

i i

I(,$o6M - 7'y_'sd~ A 1 77W* !

i I

3 L._1../Z 6 '

i i

i i-i

!l i

i s/M9=T

- Z 26 l'

\\

'6f/SM~p~ fle_L)g !

&gr2=r__ceP_: /660b.

Vi i

I!!

i i I!!l i

i i A /Qi- : f3.' 3 Rs/4.!.

i i

i i

l l!

I i

i da4ei e 1 i

i i

E.i ;

i To#

Q.k i i E M _.'? e'

~

omsm -

sp C.

t i

i i

i i

3.95i; ilAss1 i

i i

i i

Ii

. !.I &&5 I 19oi i

i i

! !il i

i i

i i

f.d6 ' 426 i resi i -do!

i 1753 i

&ti Bo I

l i

l l

1 i

i n#

i L

10i

/486i 4>.80

$$L. '

' 46 i bHbi i

i 16Z5 i.

!!iiiii!!

I Iii

'I I

i i

i i

'bo:

i

\\ 7 6 6 6 6. / L '

'! 6 / \\

b (c,)i

! 70 01 Till i

i i

! !ii!

L_i l

l 1

i l ~l J

! Ii!l

! /S.66i 4.&

i /s4 4 L i l %$.3. '. 58%.

i fo2 i

1 To i

- ^

.i.

cruz. m y ~

b //o

! 2a.45)

!2.60 W2_5 i.186.4 !Q !

! 4 8_e i

' " ' " ~

!!i i !iii'!

i I

i i

i i

i 1.I I

i 1

1

! Z&B!

- ! B4c l i/84

\\ Co6 i.58 i so 1

24 20' t

.i I

i i

i i.

i 4

i i

6

!.__jzo I i 2/.foi

!,6c=,' ! /6 ' i

- B4c: : 67 '

! dZ6 -

~ /2/f t e/o :,en, !

!l l

i

+/4,#1i i_i i

l

' ! ZMoi--.58'

!OL _ i 1-8 _4 0

/81 1

J oi i

i i

I i

t

-;. i i

i i

i fC l

l

's b

l l

i Di l

j i

i i

l

\\y

(

j v

33 m

g.

5g,M.

O l.

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

.., ~....

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

9 Oct. %C C >

s

,CU3foult

/

X17f 0026dH626 rSt0eL/ R/G 2c>e).' Sdi"~

.5-45-8 0

~

mu c'

P a t to m.

flNA ggy SU4JtCT OPg2+77dh 7Beode=s - tfRMrdiMb77 wwr

[N DRAWineG Nuan38 3 L,gTHg gg y,g,g,,g,g CALCULAlt3 4r

  • )

R2 -62MNr82.

ENGINEERING CALCULATION SHEET g sr % y/f;p

/

nus.co.ata. ins Pes = uis.i

=_

I.

l l

1 i

i i

l i

l l

1 i

i i

i i

as,,

l I

5 I

l 4

6

?-

/p -

i i

i

/:

~

f i

l i

i i

i l

!I i

i 2

i 1

  1. fs,

l l

6 I

l l

?

t 6

l i

e

[

6 I

8 8

l I

f f

I I

l I

i i

i

/.

  • I i

j 1108 i

l l

l O[8

. d(.)9'7hf I t

l t

I i

i I

t i

l 1 g-.-4_ pd_ G -

i gocy w

h f

s f

f

.j O

i l

l s

i.

i.

i

.i a

I.

l t.

t i

d

~ tQ ;

l 6

+

j 8

i g

4 q

_I

!I-i l

i I

I i

i i

i i

! b. &

i l

Y i

e._v-f f!

l i

I l

N.!

l s' '

3 i

l l

I

)

I g,,,

f f

I f

l 1

2 l

l l

l

! -l l

l I

l 1

i i

i i

i i hi-Too l

l l

l I

8 i

i j

l 9

l l

[

6 g

g i

k i

l 6

r I

i i

I I

l 1

D~'

l l

l e'

I l

i i

i l

I i

l l

!l Li I

i i

i i

I l

l l

l l

i.

i i.

j i

<g, (t]/Q97 l

l l

l l

1 i

i i

i i

i I

I i

i Ma9 1l l

l 1

I I

I I

i !/

i i

O i

l 1i I

i

!I I

i l

i l

i 6

3o0 i

E l

e l

l l

l l

l l

l l

l l

i i

zoo I

e j

i i !i!

i i

i l

i j

g l

I i

WL M TdN05 76 dio5g-i i

i I

i i

i i

l l t/ '

i

=

i

,-s

=

O 40 h

60 h

70 Y2/bC. ' RUG lE~~ I DE&&WE~S vrH.vfrguqs_ro l

c.

o Am' _

(c7

- ~ _.

X_.___..._.__.'___'$. _.k D..

O 3

A L

,4

  • *" :.,.. be.".e. g '

n-a?:.7,;4.M care V:$

'o a' v Y

  • y,. cusrcane OAlconM u>d

/

-Bo 2 e-2 PatLim.

(

[,

  • * ' 508 JECT8/6 8d?Z. b/

O R AWING pdum&s t Lj f MO IN U.S. A.. A.C CA CULAltD of ff.r/a,l Od ENGINEERING CALCULATION SHEET

.<,,m....,

...,,.., fe_ mmaz.

m I!

l i

i I

i i

l i

I f

i i

+

i i

gOrr/Of7-.

i I

i

.l i

i j

i i

i i

i j

i i

i i

i i

i t

i

,[jy./$ '

1 cEf~SUr. D!$'

- 72S/ # Zd, !

t

]

1

,ii i.

i i

i 1

tethw_r>> POntd

' sHW ekP:.

(Zay.

i i

._;s_.y.wgri : /,Js

  • i

.i:

i i

i ;;i'i -

i

~i i

l l

1 Igph- ;

i i

i l

_l i

=oP&i L.9 G,

% '+ i

,77 %

i Qd i

i uA P. X v

i i

i i

I i

i I

I

,i i

i i

i i

t i

i. i i

i i

To i

V ; 3.9S

! 23 6;

' [d6 +ildh !

WB.b '

l AGSZ_

.wr-,' so i

F 746 i/S/ii900 1 -1. L. 9 i i B. 7/. i i

1/3/ ?,

i

'i iii!

i i

i i

i l

i I

l l

l 1

.,c -

'O To

/Aed Bio: MB;-W&_.8!

!Til,iI i11h7.L_

4 i

!;i l

t i

i i

it i

l l

1 i

i 4_o

' L 6. 6 5 69/1

! --; G/ A !

!5 3 0 !

i 78.8-1 i

i i

i I !i!lii!

i>

I i

i 18,WS 2.78i M/M 73.8 !

' Zd8 ;

! if,oSE

__60 i

i i

i i.

i, i

i, i.

i i

i i

i i.

i i

i

1., f !L 2i lBod: !-4.4 '

I ! B5fi i Voi Jo.!35 '

.(6:

i i

i

- l I

l l

i,i 1i:

i ii! !ii i

a5

! : z/.:zo i v37i

!-45" L ea 7i

-/ g i

ezc i 1,"

,7

-~

1 i

i

_eo 2/.9o. -- 67

' 69

'-8S.Si

-/1 6 '

'. et&.

l l

l

.i 5

a g

3 I

I i

I t

)

3

'f I

i i

2/.Vo

._(s.9 -l2/

-2G5 -206 Szo in e

3

+

i i

i i

l i

l I

e t

i a

  • - - = =

me..

i e

a 4

  • e e Mge een

+--h

.p&y g_

We,_6-.

._ew,hw.

ee

.-w.

no-e.*

i m

M.1J. %

I

......,_____.,.9239, PLE NiJM g

-, _3 Q sa e

vt ?'~'

4 we.-,d5dm.w.m b fh

h,.,,,,.

O E*

is ese W

A4-124 k.

La s..ML4 U TA'l P y _ '_., Lh f.

A 3

s

~

~

f

& 2.

I I

hI @ L.,,

[ hT. '"

[O ~

E e 7-' -1 r-1 g

"a2, el l&

^

y e'* g

,._. ' l 3'Ie' d

h g,

> M@t

..e.

l r-: A g

e' e

9' i

F,2 A 8

8 pg

i4.,

a* a h *

=

=,r

, g

~

.1

+

a -i,

%.,, e; i

,l e e 1,

l i

eat #=gi;d I

(Fm p it[.s

4 g

QA I

j y-----'e,j!!

~

+

i a re 1

I P

GETF -

g~,J

.6 r-v i

o l

l wee mpt -

L to

-f

.j, l___m____-_;

1 g

L P

, yw rose. '

' - >M '13 > Pts e

ML '** T j D

r e-ta+6 1

54t[

E,5 sa 9

., @) neiaMt w

DEt-lGN TEMPERATU9.H g _gj Sta"

&##M #R Atf A 40*M f p.

WINTill 1

,i Y

(* 384

  • p pisTV w rge p

ggg spla.pList 99* mas.

9t' wed.

(v.ev as La, (TVFic.AL)

F parf Whv4 4 4T5aas paaptA 1

e aput&&fassw1 term em 110' MA N.

' 4 finisessfNT nwas 5

]

l x

g,Leam-up ormut isS* mas.

$s* Aeme.

l

' ' tL+ 599 c fatM l

u.e=t an a im.

5

_ p 6rt=1sviL Pset wta 3.,

.tust 6wut-oewie pumre 4 wtz.

I ig-4' I

~

sparit aso onus ruwe6 9

umaan vaLws+ 4 Anuan.

'a I

uat,Tsa a euuw+

e4r mar.

ortsw asAr, tem iaS* man.

ei N I gg

=:.n..""~*= w::,n.w

&,g g

.. As**< <

m c.s-coa. ms v.*r, sm,

t, z9

' if80*

  • t i

1

';d ce wm, t., f".*.'*-

=0 *h",a.,'"//.7.//;"*

c,.

c rr arr.

e, ev i

t deal'v i

i g

g l

g u

n.,

i.*

, r+- ;; j.

4" v

' 6 Q [i$

(SE' n'

E E

l gi 4

,i1:,..J*'hp$

w,,,p N

S k

Cr- -3s 3,

s, i

y-vn

,",-.m 4; y

t M

5

=

m $$}r..

E' i t.... a...

x

' " i.'_,

_ t_..,

m m Mk.F %v ~ ~ ~ ~

w w!"'Y.

H E ATINN W

Q-N 7-_Y M 1.-.-

E c! UID.T@a%

yp.-~.:ys s

ss m

0CT 231980 s..'q %.,, $. T f.. _

-'--@ k@

k,W.

iNFORMMiON COPY,

r-j m

cc:musimu es q 2.,,,,,&

.=

,I r

A*: >

L

@t co

,yAn p,si fjb.

I@R,,h.,.jg i

4 u r-

,.,~s l

y 0,- 1 4a -. -.., y, _f 1

1,,, p.j,_, qb,;

s..

_s_.

t'2" g F

,S

%,. s WN9 F

+

U.l*, U

&1) _ _-

i e

-m ~w.N +

7a l

.w.=., ::

i.

m.

cw m,- w....

innen

r.,;

p

'A'**

48' *.J # '** --ee s== -..

n-3,,,

4 f-rare se= ama '!#N'

, ') y

$3 i

}

yMy* 'y* [3 m t. =.,.7 d

4.,,,, %,)

Y swu ra an 4880s,'

1-u,

  • ~ '.y~-

. f I'-

sar<s*

ta=* [

9 N

4 g=* L *

  • 4 VR
  • l**

L '.?,"f

. -. 77 i.

P e** J..*.* *L. L **p**.' m..

/,.,...a,,,,

)

C,'g-_. =

piR,w,ays, asecr=

sw tse < *=3 j

,,t,,,

\\\\

hY

  • @M UW C
Tint
  • l k,;; 7'2 Es: nf y4

)g] N Aq 3 *,

[h 5,

(c.

f r\\

J:S 's jQ ggy

-g.1.g3..LQ ;

i ggs.L y4'.

~

' = > l

.. p".., n as g,

g 4

3.i.,%

3 3,

g.

GGO,

% g - A.rA.

.j k. ~ 4 ' 9

. q @

e m

.jg 3.

w n

~ g.-

h*.._k,._.(_QM

.M, V E NTIL ATING- - - -

4Y t T E %

r I

O

-. 4m -

rusustD OUCT a

4+.

- - +.

Id ',"e" I

~ eras a a.E'Y a

~ 4m==

u%,,

f,

saaesuaLyide nl 1

i I[

) {

cte

.g -

734:

Ft Q r--

rt4 i ' _.,

rQ.'d rQ N

i

$D.J.]- c:E_1

-r n',./ $e

-rm=kyna--" 4r"f-e erg ll 3 4.. y c_

u L; m j b

=F-qg. w e~ 6 n

=

m

=

L_

e r~

n,

s.,,.

ah.

t

    • d -fr-p- -

sNet r

,r >

/

4 e

~

]P ;rona

=

=

g' 6

J, 3',"E"ff h

- "-" h"' h*

c_n\\"%@&e.memmy'} *.

fi P E W AY f 4TE AnA DQU4A AS4 A, o,,

1 tL e tse C#0 LING uurT4

/,

l ".Ca

= =.

y o

p my

/

u,,.m:,;,:,u ns

-.,u-s l;

[" [,,, x I."..*,4$. u, @M n,-

4 7G"*n'5,933,=;=u' I*!

^

Z.r : I m

,=..,._...m...,-.....

<~,

9; M k.]

' u'.L$O3.T.;"J 4.'*"ra". C"'7.5 l

h[

H) b

.- s e

  • !w 8d MTI:'A g

.r%7' [Q 0

i

]h?

g P

mirtv.) p",s asa',. g ii i

. xrr" nht

="

~~

gg.,

g e

,,; u a om-

m. w t.

_,dl..-- #w_.,

M NY J

.' wM

  • c.l7 * '"1% ~.'. ha.

,=u.;.m l

TW L1 Uli

' V

,.n.

u a

x, V. w....,..... -

.a, J

,. ~,-

Ms.

_ -w_

.4 y 1 l

-<= :

i_i

, m m f,.

- _~

rr g

g.,,, )

i-w.,..

4w444CB ll 1*

I esorem mm l

G an

w. ta ease -- -1

=

7) (y 4

"""'l 3 f.e.(an.tu ( g,,.

81 G t OC K.P o.l N.T P L &h T V

l a==m = m=.s=

'f, #a e i

~

---N"

kb5I I

A k"i'*l3 pa t

[. *

~

T QEACT02 ButLDIN(s ir APPROVED W' ' '. c t

e m *=. = m c,,-

aunww A

3 o n i m, mm mm

a=r c

^=-

L' ' ' '".*_.i

  1. f 3:59 1.M a

~

m uws v

be===k d&oG468258I6% o 2 9 03%

-- -

Retrieved from "https://kanterella.com/w/index.php?title=ML20062J496&oldid=4453003"