ML20081C511
| ML20081C511 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point, Perry, Catawba, Byron, Braidwood, Surry, North Anna, Clinton, Midland, 05000000, Marble Hill |
| Issue date: | 03/09/1984 |
| From: | Jim Dodson PACIFIC AIR PRODUCTS CO. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| References | |
| REF-PT21-84-167-000 PT21-84-167, PT21-84-167-000, NUDOCS 8403140122 | |
| Download: ML20081C511 (7) | |
Text
,
3133 West Horco street. Santa Ana, Cofifornia 92704. PO. Box 5277. Telephone 714/557-1710. Telex No. 67-8319 March 9, 1984 United States Regulatory Commission 1717 H Street NW Washington, D.C. 20555 Attention:
Director Office of Inspection & Enforcement
Subject:
10CFR Part 21 Concern Status Update Pacific Air Products Co. Linear. Converters Gentlemen:
The attached letter and list represents the most recent actions and information available that relate to :the excessive wear situations encountered by linear converters manuf actured by Pacific Air Products Co.
If you have any questions or comments, please contact me at-(714) 557-1710.
Very truly yours, PACIFIC AIR PRODUCTS C0.
9' @
kkx James P. Dodson Director of Quality Assurance cc:
NRC (Dallas) Attn:
Mr. Cliff Hale 8403140122 840309 PDRADOCK05000g IElf s
k
b o
b Cd 3133 West Horward streer. Santo Ana. Conferrua 92704. PO. Box 5277 1seonone 714/557-1710 Teiex No. 67-8319 March 7, 1984 Log No. 7043-31 Attention:
Quality Assurance Director Regarding:
Clinton Power Station Linear Converter Investigation Update Gentlemen:
On February 1,1984, we issued a concern regarding abnormal wear on the linear converters manufactured by Pacific Air Products Co.
I would like to bring you up-to-date on the progress of our investigation.
1.
Our testing program is well underway and is running according to plan and schedule.
l We have been able to duplicate the pattern
[
of wear that has been reported to us from the field.
2.
Our investigation of field co.1ditions is providing us with some insight into the l
causes of excessive wear and I would like j
to relay some of this information to you.
l I
( 2) l t
A.
Actual field conditions confirm that the ex-cessive wear on the linear converters is caused by " hunting" of the control circuitry.
For example, in one case a volume sensing device was installed downstream of the dampers.
When the dampers opened, the air was aimed directly on the velocity sensing device.
At that moment, the de-vice sensed the increased velocity and caused the damper to change position thereby deflecting the airstream away from the sensing device.
The sensing device once again called for the damper to open, etc., etc..
This field condition,
" velocity stratification", caused the damper to
" hunt".
(We estimate that this condition could cause short cycle response at about 21,000 strokes per day or 651,000 strokes per month or 3,906,000 strokes in a.six month period.)
B.
Not only can velocity sensing devices cause hunting but temperature sensing devices, where the differ-ential is closely set, may also cause the same con-dition.
(
I am enclosing a photograph of the input shaft of a linear converter that was returned to us from the field.
The wear pattern is indicative of the hunt-ing problem.
I would suggest that your project be inspected to determine whether any of the tell-tale signs are present.
Hunting caused by the control circuit not only affects the linear converter but it also affects the damper and the actuator.
If this condition exists, it should be remedied as soon as possible.
A determination of the number of cycles run by the equipment should also be made to assist in evaluating the replacement or servicing that may be i
l required.
l We are starting the final phase of our testing program and will l
have some definitive data available soon.
9 (3 )
If you have any questions concerning the information contained herein, please call me at (714) 557-1710.
Very truly yours, PACIFIC AIR PRODUCTS CO.
dM 9k %
James P. Dodson Director of Quality Assurance
Enclosure:
(1)
JPD:dg
-cc:
Sargent & Lundy (Q.A.)
Steve Ornberg (S&L) f l
l 1
t
m
.. ". J;, k. m,' [-.
r, - Y.,
..[ 1 7.; h.i,t,D.' ',' ; 3. Y..
5.,.F.-ap
&,.p 4f ;. '.. I i
- k...'. 56-
1[ w fW
- 1..
s a
e.4 t
e
. eg',.k.
, j '.p ?..". ';'+. m
- '.',.-a:
.t
.V q
... yc -
Va
- -1
'1
-(.
s g 'e,-
e~ t t
As*
N'.'g -
g. '- f g :y w
e
'3 a
?
- 3. f: J.
..'..,.a'
..,,. ~; y
'l?
' jf n
- - Y r.\\..T
- k.,s n) "N r.e h%
).
7p
' '-
- i a.
,.._".,+Q..m e',~
,' -.,s
.f -. " _..,
.y..y s ' a v.
k.4,.
- y,,' 4..} ^ h.. e ** -' ; j '.%
r..,
,.w~...,y..,m.-
s..
-7
~.,-
.?., % -
,n y.
+ q....s,*
('.
g m.<
m a
- nn
.. * ~et 5'
,y %-
-r e.
'g v
..'s n, f'
.,.2.
. $% Q' _' Q ', *.'ry'j l
.h-
,. f,3 ' i N
S Q
'n'
,e.
g. c.Q.
. F e v' s e;- a 2., 4
,'...f %,.8- +. k W
. '.~. =. %y
- e ag-1in i cc;m+Q<g.8, e a w, s
a c.d,; x. w w-4 3.h 4 CC i
(4;/,,.,.. $. s
'.eac
'n*
t 9.
r.
v
- y r,
- - M,,,Q. n ;
.r' %
. ~' ".
a_
g,.+
c 4.t.',.y 3;4. Q g ? 4. 4,.. 'q g g j.i.., g. v.,1....n, N %.. c%. -..
't
+
p
.. er
.. w., n,
-o
.s
,;.7j
,['.
1 1 x
~
w.
g
,3 w
.3
,' - d.. ;
n ; v,3.
.gy-Y.,
- 3. :.. -.
-c3..; n +., s. a p.:py?,,O.
., a. '.7<., 'u s,.,
w '
v-t e,ye. s s
.- 3,- 3,: %, -
mm.+
+1 c
._.p<
i.
,V r
.-N
+....
-- y~
' 4. 4 g.
g.
1 e,
p'. g K,,.]
g'a'-
g;
.. h, g t.
..,,((.x., /.?.
,. ',(E j.? b,N,
T DI.; h f k j h,.j% -Tk/[-
~ ~ ' *
""'b.
a
[
o'4 *
{l. r-h["', [~ %
'_^
y" s.
g 5,
c,.j.l#
6
'S.,Y,"(-~,_--
2.
' ', j..
..y,M T' g-
~~ p,ap " '.
e
4'*'%. w-
- +:,',.-
- g.,. m 't -
3..
m -
.a
. t
' * ** { - j t
- j s".
-' A r... '. -.
- Q,e.
.. y 'a -
c 4
+W,R[.g'; ' j i,,.,..,.. - k.
~j.
- p, f'Y.
y, J
g p,
g.y -
y'e_ c+
' v't' t*
y.-
W,-
g '. *, f,. g g y
,,..n pfk A=
s.s
- _3<'
,y
,q_
9.,,,.'
- . - 4 e
vc -
6, 4..*A
>. y y
e.
q.. -
- e,'
s s...
.d
.a
.,.,% g g r., ',+
p y
l-f. g
,g -. v.,.
-p
.-p 4.4: 4- ;
,w.:
.,, g.: *,
- ., _,, < i.. -..,-
_g.-
y, + g.j- -i v
f p
y,
+4
.'.[,f,
g'*D-g.,, % p...,,,- r
- S
~,..,. - _'
c.
- 7.. T
- e.s&.
y.; % *_... Q
?-.
Ny-
'y s.
f7
...,,?
,R
's
- ?,-
[
)
s
- : o....*~.
9 e
y
'c
- .s 9
Ar e
. c, 9 ;.,' -,
,{ %,y f[ ' -
.q....,
, /-
w
.,r.
.y,,.
p,
).
. 4
- ,4,..,,-..m-p"..,.,
- s. g.,
..g.,
E '
'.l )$ $ ',,,,,.
- Y
'... ~ I - l
,,. ;. c:.
- W"$ '
?.,.
. f.
i.
1
.g 2
,...;;.g.; g..,
4,.,
4 s..g...,
. A....g, -
3,,., %
A,3,.'
,j
+
,Q7
, p-8 3
.3 y
9
, =,,.
Y"&
- +
'l l
~
's
.*,' g g
- g i,
.t -
.y,.. c. Q' ', %. g 4~
4
,,....y s-
-4 ' L.' ' ' '%
T'
.,; a,.;W y,
,[' %
- ' ($
' I':
- U '. $~ ^
- ',.^O
-4
{
y*-
" '..,.i y
.,y
%. -.. g A
K.,y 7.*
s f ',. M.4,. :q. 6 ** ;. w,
,L. 7.it.; %
?
P.b :. 4- '.. ?l.Y g.
- s.:.-
- ~ p '4(. m 6. -
A
-g
- t. 1,s.
~9-
,;27
'.A A[. *
- y
.h.: W'-
... s
. 3)
'* s,
. ' ' ' rg
- i i)..*
,'7,
- s
-*n [% !#', Q*\\',.....
'?-,~y F
y
'.I y..e j*l. '
A>
%?
, e
-'r ? 4.
..?
,.J 3
?
.: Su s : i f{. *
- k
').f L.,...
k9
=
g C,
,,."e rv '.
.,s
.., ' lf,.;..
- ,l.f( ;.',bj y..; }
jfly. * * ' L,.l3p . ' '. [ m &..R.. . Q
- > -.,,.,a" '.. '. < ;..,*.*.._ [ }.{ ' y _ '.l
. C ^ .. -. f., -f.p M'x....y o* 4 t y .Q.' +Y g. t 3 3,y ya a, 3,,Q.%.. '. '.M /s -, ;. P f .v.
- r'-
.~.s . ta; 3. p,.y f, d, f-ll,,, g, c,,.,, e 4 ~ ., :..,. f.. eng --. i,,
- 7. 9 4., i. d, 4 :.,.
- q. u -..
.,,.n, .q 4~. S, .? , i.... ..:, " - - 3.t - t .
- f '.y \\, ' f '
- 6 $,.e,
-v g .'. * * -. ' _ ', '.. ?.\\.;.,~,l -c,l1 f ', ', '. } y" '.j. y'-U,% c j f,,o [, .[ t,j _'y e
- . : g,j,,.,.g g. 6h ar,
43 g. pp. a -,k w .,-. gn, - .,y,, %m n., .~ -.c, m s s. - v .v A. ~ *.. .. +..r .-w. 'u n,.,- w e.= <.. ~.e g g;. g;. 4. $.g.,.*~,;.,., w ^R '. '. - ? q f,-r.y % +-. c y ) y, n,,- .,.l. Q..' s-4 .-r e, s t? .e. , :/.. ...f. y. .s, j.1
- g.,.?.
m..r.m., ,..,s. a r t ;.. m. , m,. - 4 x.~ 3 ;f :..,., ;w ..r. j,j j. 4..S
- p..,,
,3.. s...... s. ,= s.~. ..y 2,.,..,1y. s .c., ;p.,, o,.%, 4 g ,..,;.... w. ,a - 3 ,:,- ;g-. y
- . : : !.4 c
m,... ,4...e.. a.- r e, . tg,, z.,u;y: 4.,. n R,..-. v.. y..,., . 2. n v. 1 %- -r. s;. T.,., y =, d.;r..,' ', s.a e.,,:....., ~.,, ,, e
- w.,
.n, c., X ; '..w'.g ~ G y, %,%' c.o,c4. %. y:.4 G a J ' ? ;.L M z, f i; 1T-3 : ..y. p vy. 1[s. ? q- -r.".' p,. 9, +. cy1
- ~
y. n, 4,.'..,, u .3 .s.. f .,3'j g; :r ,,, v. *,,y u 1 - : . a 7.. ;i,..y,,.hqt. y ..n.. +,,-,.., m... 7'.m' .'e'
- f.7, *,.?!..i
,e ,,9.; w m- , -.m i . Q (. - - if _..., t c. 3 s. A ,z.cj , g 9 'f s.. ;- -',;..., 4, g. *.,. 1 3.p (--. .}. g:,, % 7.}.,-}.;:. (. 4 +.. a..<,.y., g;.. 7, ..c.
- 1.
+ ",6; ...y; - s.,... ,m.. _......<<.w,. .m ,g+.. r.. ,.c , ~< :.< y,. ,..,.y,s.... ,g., y 3., 2 - 1 .+ - s ..,..9 ,. s.....s, y ..3. ',;. c 3,. m. ..a4 .,g ,. g.,/.4 .,. C,..- e ,s..
- p. -
- p.,, c -.
f(.. s 2s. ..~,y,:.y,,.n. ,o .. ~.. :,+. _., m.3 ,,r n. + x +,, .g.,.3< .,. f. 4 s ,y ,o, s ,,,e.+, - t s s. ,..s p ,y. g:, a; u. 1. .- _1 5. C. . g's. W w ...;1 ~ x.ic.. - s 4.n,. *,. 4w*A r g,...w,s. et +.. a 4, c...- 3,<
- j. ' %
,. y, ' ;.* ..t .:,g
- f...,-
., 2, ,M' +- y' j :-.. p.. j
- ? -
.-a t
- /:. q
- ~g e,,.
v .. h s.
- fj,,'*'. ; *.
Y.'l <:*g $ ~ l } f' [c- ", ? I L .z g; s .s .y g'y > g. r.
- -'-y,c y ?,,
p. n y, . r'h... ..,.e g.7,A (,,,,. 4-t..i. ei,'*%' .s ,.s, g j..,,,, s f. ".'.,p+.-.r h ,g g. ..e v,.s., e 4. ..a.,, y,- 4,.c ;.. ,, w ; y ,.'g. y.s.. y.t., s w '^ *
- a m
.,,.;t F.g.;.'.7.,. $. - e . _. -.-/*.% * "...s .-. M. ms .'.k., g W. jq. . - 3, S. t.r.- +j ou o.4 ,6 p n,- ,[$, n. *, % i c , p q., n s.
- -9
'.e .c. ;..- 4r.. :: 3 , -,.,, g..s 5, af 4,- . y :. ; 3. 4 -e~y.h eg . t t ~ 9 _ g, yW ' f, 9 ' %f '_. ) g i gg y 4 ,x
- ?.
Q ( W ',.,,.~.. A f g i, ,., eh e ~.,. ,,',.l. ' [ R, t
- Oa
- .X, '
3 9 6 N
- g-,*,y-g,,,'-d
.i:7 ".,a... -m*,'.N,- ,y* ' g[.y. ,3 . ~... p - s h( -},;. f .a*., ' - i -4
- @.G
<fy..
- .9 y 9 ", %.,,
e,%, s. ..1 i g y, .J ..= ;Ig w 9 4.=
- 51 s
,,,,,1 =. 3M. y m [4,.. 4 ,.e.. p-6_ ..y; g' ;.,,..4 , t $, .3 . y,7, .e m, W 4 + - w 'j ;... g. % s ..j, e. ;,,s. , + i+ ,w .p,.. 4,., e j ...,w. . ~ ~ ,w n
- t. e..
y m 9 g-q. .jg n - '[, 7 ' p.*,.,3.> e,. 1 .m 5 A t 4-2.y. e
- i -.
h. g *, 3.a. g' g ( V ' j.', -,A 3 4
- .k.
,2 .L E... ,. q;. g - - ~. .,a y : Q} e ";. .*Ky r ; y +. .y* A , J ;,i.. 4,, , *+:. A V q'. >. m .4. a, ..r.%..,,b ~44 p. a .' /.% ...-.- g. .. :.. - } q$h '..?.f., 'g'. 1 &?:, s. s.+. b.',4 Qp[.. V..'.s.. -YY j~ " ' ? *N.. ' ~: ~ ~? "9., s 1 .~.. frg. e .c.,. -e <s ?
- ..=
p '} b '{. j'- ' 4
- v. m y'..;..x 3, ;,..,,k.y, e. _,a 7..,
.+ 2.- m? go a. :..N* 3. ,6, a' .m
- u. n.. o. $,,,-
Q, 4*
- g 9; w....... '.-
3,.,.,.,, ..,x s , f.. ap g Q'.. <. 1 s. 4 3 n
- V
...w
- v-
, f;,., - 5', M. f i,. ~. f.["; ,y g ?, y rp '.5 y,.',;3'.. -.(' ., K. ! .', n' 3 -"_.~.t_ ~, :'_ g '..,. ,f &y _ T-1
- ,r W
\\, ' Q %' p:i.Lf_ Q f 3, k '..[s_ } -{,._ t, f y. s,. v m$. l? y ' ' ? ? L '. .f'- . }"; - p\\ ' Lg .? Y y 7, _ q-- t- .A.-* - t ,, p }" 2. 9 %.y ;. 3 ;",
- q. a V.
p a ' \\,, ,,9 _. . V.G.9 49 L\\_ _1
- j y
s,, j wy \\-l 4.~. + 6 ,,( 1'.1 N..
- e. #.
.,..,.'R..J., 4t y. ' L,.,f'.. L %.3, c.;.; ~ 0 ,p ,W -4 C .4-, w ,,,7 i M-. a. ?!,.g 1. ) .G.-
- 1$
sq,41. A.9 a g 4 .A 4.-..... o,,4,i - < m M,
- 3. 3, i ' in.\\..(w. sdQ d. Y y%..%,. ' y.. g '
- g. ;.;.% %... n.,<.. y+%.v...,5..,.%.
.,3.,,. ...e ., n..i u Qb.,y^*ks
- q. 'd g.
~ .m #, g: 7 e.. w o y
i O The attached letter dated 3/7/84 regarding PAPCo's linear converter investigation update was sent to the following: ILLIN0IS POWER COMPANY cc: Sargent & Lundy (Q.A.) Clinton Power Station Steve Ornber (S&L) 1 nt n inois-Rick Servey Illinois Powr) BINGHAM MECHANICAL cc: Sabol & Rice P.O. Box 1856 1300 Pancheri Drive Idaho, Falls, ID 83401 WISCONSIN POWER & LIGHT C0. cc: Willkomm Co., Inc. Columbia Generating Station Sargent & Lundy (Q.A.) Milwaukee, Wisconsin 53081 Steve Ornberg (S&L) WISCONSIN POWER & LIGHT C0. cc: Willkomm Co., Inc. Edgewater Generating Station Sargent & Lundy (Q.A.) Sheboygan, Wisconsin 53081 S. Ornberg (S&L) Joe Dalheimer (Aldag) CONSUMERS POWER COMPANY cc: Bechtel Ann Arbor (Q.A.) Midland Nuclear Power Station Midland, Michigan 48640 The CLEVELAND ELECTRIC ILLUM. C0. cc: MCC Powers-Skokie (Q.A.) c/o Perry Nuclear Power Plant P.O. Box 97 Perry, Ohio 44081 DUKE POWER COMPANY cc: Bahnson Service Co. (Q.A.) Catawba Nuclear Station Newport, S.C. 29730 VIRGINIA. ELECTRIC & POWER C0. cc: Stone & Webster (Boston) P.O. Box 26666 Richmond, Virginia 23261 NIAGARA M0 HAWK POWER CORP. cc: Stone & Webster (J. Plante) 300 Erie Blvd. - West Syracuse, N.Y. 13202 PUBLIC SERVICE C0. INDIANA cc: Sargent & Lundy (Q.A.) Marble Hill Generating Station S. Ornberg (S&L) P.O. Box 190 New Washington, Indiana 47162
COMMONWEALTH EIDSON COMPANY cc: Sargent & Lundy (Q.A.) c/o Braidwood Station S. Ornberg (S&L) P.O. Box 81 Bracevill, Illinois 60407 COMMONWEALTH EDISON CO. .c/o Byron Station cc: S. Ornberg (S&L P.O. Box B Sargent & Lundy (Q.A.) Byron, Illinois 61010 Shankar Planjery (S&L) Jim Westermeyer (Comm Ed.) bnited NRC 1717 H. Street NW Washington, D.C. 20555 Cliff Hale U.S. NRC Dallas,-Texas i ) I l l I i l l E}}