ML20071H340
| ML20071H340 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 03/03/1982 |
| From: | Schroeder C COMMONWEALTH EDISON CO. |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| 354ON, NUDOCS 8203080379 | |
| Download: ML20071H340 (6) | |
Text
_
rh Commonwealth Edison
[
,) one First N tional Ptta, CNcigo, liifnois
( j{d7 Address Reply to: Post Office Box 767 N
Chicago, Illinois 60690 March 3, 1982
_ Qf ' Q,
l Mr. A. Schwencer, Chie f Licensing Branch #2
'0(
9 ff4 4-s jp1 Division af Licensing
< MQM, U. S. Nuclear Regulatory Commission 6
'# 4%/
Washlagton, DC 20555 j*
y
Subject:
LaSalle County Station Units 1 & 2 Diesel Generator Piping Convention NRC Docket Nos. 50-373 and 50-374
Dear Mr. Schwencer:
The purpose o f this letter is to provide the results of a design review of piping on the LaSalle County Station diesel generators.
In a January telecon with A. Bournia and John Knox, et al of the NRC, Edison was requested to review the piping on the LSCS diesel generators to comply with a newly imposed convention on the piping interface between the plant and a diesel generator.
That interface is the first joint / flange / screwed connection on the pipe outward from the diesel engine block.
The Commission staf f wanted to be assured that a design review was completed for the diesel generator piping located between the former interface point (on-skid connection) and this new interface point.
Further, they wanted to be assured that design margin was identified for piping under this new definition and that engineering standards were met.
The results of this design review o f the as-built conditions at the station for HPCS diesels and the three emergency power diesels follows:
Air Start Piping - AE review of the as-built conditions shows that the air start piping furnished as a part of the diesel engines meets the intent o f ANSI B31.1 Power Piping Code.
Field measurements show that actual pipe thickness is 1.8 to 2.0 times the minimum required thickness per ANSI B31.1.
These thicknesses ~ translate directly to f
stress margins of the same magnitude.
Pressureratingsonflexible}gepO air hoses exceed these margins.
r Fuel Oil Piping - The fuel oil piping furnished as an integral part
//
of the diesel generators conforms to the requirements of National Fire Protection Association Standards NFPA 30 and 37.
NFPA 30 requries that fuel oil piping meet ANSI B31.1 Code requirements; therefore, at LaSalle the diesel generator fuel oil. piping meets the 831.1 standards.
Actual field measurements o f piping wall thickness reveals 1.86 to 2.11 times the minimum thickness required by ANSI B31.1.
These thicknesses translate directly to stress margins of the same magnitude.
8203000379 920303 PDR ADOCK 05000373 A
3 A. Schwencer March 3, 1982 Lube Oil Piping - The lube oil piping also conforms to the require-ment of NFPA 30 and 37 and, as such, should also meet the intent of ANSI B31.1 code requirements.
Field measurements indicate that t
acutal piping thickness is 1.83 to 2.05 times the minimum thickness required by ANSI B31.1.
Stress margins of the same magnitude translate from these thickness margins.
Cooling Water Piping - The cooling water piping from the temperature regulator to the neat exchanger for each diesel engine conforms to ASME Section III Class 3 (1974) requirements.
All other piping furnished as an integral part of the diesel engine equipment meets the intent o f ANSI B31.1.
Field measurements of actual piping thickness indicates 1.80 to 2.05 times the minimum thickness required by ANSI B31.1.
These thicknesses translate directly to stress margins o f the same magnitude.
Plant piping to the original interface point meets the ASME III Code.
The entries in FSAR Table 3.21 relating to the above piping are still correct a f ter definition o f the newly defined interf ace point.
The piping supports also received a design review during the SQRT program for plant-connecting piping and for skia mounted and engine mounted piping.
An acceptance report is part of the SQRT record file on this equipment.
One (1) copy of sketches with connection piping to the diesel engines, as provided from the vendor, is furnished to show the location of the first joint / flange / screwed connection off the engine block.
LaSalle diesels 0, lA, 1B and 2A are depicted.
If there are any further questions concerning this matter, please contact this office.
Very truly yours, 1/3lbt-C. W. Schroeder Nuclear Licensing Administrator 1m Enclosure cc:
NRC Resident Inspector - LSCS 3540N
e G
2 M
s~
s e =3 3 E
4
=
5 5
=!
a
's==.
a w <
na m
E5 5$ $
-C*
//
Yd
$i a s e$ ! d g,
/
/-
ElQ
=*
f
/
g
\\
-r
/
q
' -^-
1 g
3 4 7,y/A'/
w 3 cs a
4 O/< w cawj 3
mun-==/__ghm.(
-d
.ai r.
s
-u s
.. \\.
\\
/
r D
,e
/
3
. cf 5
- a 3s [
.,e j,,
m Qv
%\\,
/
kh's1,
)
/
y s,
'T
-/
- e 8'C \\,%, 3 c'./
j
,y
,-J w
,4 x
. 31
=
g
.L
/
p~1 3
3
% "K [9 e g,
i s t
s s
6 3
/ga l
s% 's.;'
k k
/
'Js -Q Q
j /
\\
e k
, S,,
'\\
- gl. \\
< gc, 3 8 f' j$ l'.
5
/
e e
g./ s f x
-- m$.-
g j
/u
% y'/
\\%
/
c4
,- s -
w b
%- 4.
43 R
/
l
/
e', n
, x3
.\\
4
+g s
,1 s_
/
e j/
[#[ /g8
/
s a
j
'L* \\ \\
\\
/
(miggp i(di),,ri,l\\
\\,
~(m2KEtl g
\\(
\\
_.. f.
,1
<~n/
j t
'{\\' '.af 7. }(d's.9,7T^!
1 s
O
~u
~
5' O
5 5
2e
$$ I$ N bo SE Y so \\
g"Sa*
($ 4
/
g
,a = * <-
"\\% w%
Q 55u=
f /
j 'pi o' * ~,, '
2-Nz $
K
's ogog-
\\'% ~
a -
'ost s m3m5 h
,/
\\
~
h
_) Q
'% g Y:// '
iya a onw;.
\\%h p,. l/
'. ^ '.
..s x
"~
1/A7 WilW 9MM Y'
5
>M.}p$?
%,a y
s
/
p 5
iQs Q
~
- a L'
W
/%.
t 1m
/
+
s i
tut a.
h s t.._ /s e-
~
-s so m
/
^,..f o?
--l % \\
/
/
j,.
~
i ei i
s'
/
/-
/n
> 1, a
e.
./
,g.g.
\\
/
q
%'h
~ $>
D/% g%
% - a.
' ~ " '
1 k
'I
(
Y
,/
g s
g%
"g s.
\\.
,. a '
\\ q N Sa a.\\ / '
"S.
s
%s./\\,f/ p%\\ k%Vf *0'x /
s '
e n s.A s -
D
\\ ",
1
,\\
.s
//
\\a%
% ' j) /.p?
y F
8
,-L1
,a Y
U
/~$\\ ' '%Y Y
/
ht(h5_,
/:
8, p.r w[
~
._ w 1
t
,s (e?
.h"'.
~~
- f. ~
r :Wi,/
\\
(c.:k,4/
s a
i i
~ ^^/
1 gaz t
~
ca : py~/
s i
/
s,
- \\
l
,m/
/
N -hN
/
'N
\\
/
\\/
t
~
u O
E 5'
C f
f-2 m ::
I $.% $
E.
Eo Eo W5 5
a" C%&
Uo 5' 9g
.c 5,5 25 o B.
he j
y,
E',
Q
/
O EE
+3 a 3 c.c
\\
p%
[ p /
j,iij
,\\
.' -)
in I___
/ S's I
y t
Jn cia w wwJ.
.'\\
h
~
,M Q
l/h? W2W W W j
/
s g.m(3
{
2 s
u 4
f k
-\\
- 2
\\
,~y g
j d
\\
"V c'S
/
T -(
w 7.
SN s
/
f:
s
\\
i j
n g
7,( j j$
-R
\\
5, h
Y ~u k
\\
-?cs
.g' 1
,r * %
[-
's y}p !lt
\\y z c:
J.
A
<- /
=g', /,
\\
- /
s j
/
f~l
\\
s/
i ~
N...
kgi t q,. t '4. /s s
s j
//
e'II\\
1---
('
La 1.%, '.#}
/
"/
' $ <%.,1'.
s p
g
\\
3
- t /
\\
't
"% % hl\\
,l' gj
'*Q
- a.
.A s
s
\\ % 2, *s "S,
_/
q, t*>
-4 y
'\\
w.
'g
'\\
\\(.:. g ~s/
<t #
WN N
\\m. ?=t '
- s
,/$
\\
a W
g
\\'
ci.1tN/ /' '
N
--c ---
Nj p//
,/ '\\<I
'X '
3
/
g/
i f
\\
s
~,
l l'
(Cit *)/,)I Y
Y
.i Q}dt, 7
</
y,. g
%).%
- J
,/,
k
%,r
/
//
'S.
?.,g \\
-/
s h '-E c,s w
\\
Ne ne l
l
\\
' ' (JJJ fE p
i N
\\ /
\\
/
YW)/fk/
- ~
e j
(!
'N 1679,4' i
WMW'
\\
\\.
/
u
- s.' n (NAM'
\\
m l
W l'VE ]l,
]
'N 4 s
I
\\
\\
~
e O
u
~
5' O
5 5
4
=
2-2
-^
55 h
A t
.e s %
'?a e-==u $
'RQ 5$ 55 e2 T-
\\
2 e-E=
M
\\
o8w8 u> 5" a. 5 i
1
.A ] 'T /\\
i-M T
\\
'\\.")/ -
'\\
4 a
$E
' q\\'N
\\
i }H
\\
t w
f
/,
$y '
\\T
/-N b@
a
.De s
e,
/
x n g '
e%
. \\-
\\
om s.
g
/ %
y
/
, s. "ss t
a g
1.,
h.
7 2
1.k e
g 3.b'y gM' i, Y%
.5 3%
c
-A,. y
)
S
,s
_.. +
/<%,ss,, o -
f, w/
.g.3 y'\\x<s4>, n'g, t
,w.
3_\\g,/a.a
% ', 2
/
/
/
e
/
~,.g
\\\\
!,,/Y#x/-h.M,#x;'s-
\\/ /
v..
7_ _ ph[' \\, %k i
k,
\\ j,/
M s,
l 2+Q falll
' g g.:c K N )/ \\ g} % y f f. y=r '
f - -
p s
\\
i s\\,
n, \\ /qi e
m s%. o r. s lw>'s,'s
- 3_
, c \\:v
/
/
m. <a '
sy c.m //wm 1 %,L s
,/ i v, i.
15 1
%. Q'*
Y
'm y
[
'il %
W
'*'1 v"E g
%s %*e f
%c
- /
/
/ /
eg% e x g4
> ;g s, s i /,
L o
c
/
s N
c
,/
- e :\\,'
_,g '
'< \\
s
~
e
\\
__,.A /..
/\\ N
/
\\
/
\\
/\\/
/
g -it
- //.%
's\\
/
i
/
\\
</ x
-4
/
Nl
%u
\\
.t" s 4@W
\\
e, t.e J