ML19276F891
| ML19276F891 | |
| Person / Time | |
|---|---|
| Site: | North Anna |
| Issue date: | 04/20/1979 |
| From: | Brown S VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 148A, NUDOCS 7904240430 | |
| Download: ML19276F891 (2) | |
Text
I
~
Ve co April 20, 1979
". Jamm i' 1'a il! f, r) i -c r. t n r e
,',,,3 -.
Offiro of [qspe-tinn & c,,en. - %, n +-
p q c t, / " e c...p,,..,4 '3 9 9
-~
r, 'co-,.,i s s 4 qn U. '_,. l,uci mr Agin i, Rogion !!
q.
'b, M F iett) St = t, Suita 1100
' ~ ' 'n c ',,, 3 -) ' c q y" n Atlinti, Georq'-
To7n7
')" p- :h, q ' ;).3 i 1 1 y.
Th *W r5
'1
'174,
- rong-t c s en1r,m igr tw proy<si,rq nf c;cy;mq, m f n s
r ance rn ing ovenze iqht choc' valves used in t% sa'aty 1-i ction svst-n.
This
?
was fo i l r....e d
't,rrh ?.3, tq7?
5, y r$ v -
y,, y, -t gi.,
,,, c
'n d
p.g,,,,,
19e ro '> $
st w ing tw3;
- 1 c'
c h o"'< v 11 vc-s uw i tSn safety iniortinn 3,s+ -
n wi@ '5') onunds, 'at ^ 13 t tha v31ve ara.v i n ] 'uno'i 31 to "+nna and ehstar jor,-"act15 Tit *'
velv^s 3s vei pirq r ;; w n.j s,
% s af 'ty ';i gn if ic anc" wa s "n t th is err cool i r o qu' t in,qions S>ing ov-st ~ssai during 3 cigsign S a s v. xci mt.
S tone e n ' *,':.h s t m ws em1py tq,3 r r,yic, gy.3
,ge,gt g,
4 e, 0;q s
uafght of. h. ) 'de s t # nq99se supp!iei valves lijr.nti'im' y; e g~ i f rg7, m
1' paunsis +c ' ;y u n i s.
Th i s t is'r ceouirod 3 eana'esis of lass nice st ess proh! ens rii i wvi...,
ana m 3 t ys is of p p, syg.) +, g ; g s,4
,,r,m, 10'li ai
'*t_Ulf u f t i i r, uana]ygi 5, fer' t W) c r-
' "- t i vi s n ' t h <> 93 fay e
In.i 'c t i on syst+.,
hich i ncitef ad t ha G" C9 vaivos.
~
T h i s rt'v i,: it, ' icd t03 t h 3 t
- h,; ;) i p i n g y t vo stress pra }g.ps
,,',j, q k
Tf'tional sou+ ers ' ee snJ%e s tota t i in,rdr to nint ain t-1 stass g Solne AS"E cocr
.'I nu e l ?<
v4 ' enn r i gi,' r e ;t r a : rt requirr! st uctu
7d if i cM i on is a resu't of tne inc easei lo v.
This q u nas w n c H ote i
in th" t 1911.
Six oipes tN t were iffectei w +he v31vy,,# i ga t c' a n g.: ve connactF to IPO
- ctor CDOlant IOop alping in i tM no2 Z l os it these cocG9Clions *. ore tiso
- ulit c t to load char.qes.
Tka sn nay 3977
'i inqi Siva Scan f ra siittei to
'L ' 5 t i n g h '"; s ; h '; +( V C ',.!a s t i r gnquq n
..as ng+ y.. t gpogleta ' th*ir reviat o tM f
nr*, ng77]e ]g3 c,
d The incrJ3 P
v31Ve w3iqht 3Is3 #fectec thd l oads nn tna CI Tss I cont i n,ent ;
t,t i m s.
nes, :03i cn3ngas navn es,, ?v Wo an1 thav have v
s a negligihlo r"ac t on t'w' i
penetrat cos. rocuirino no % cork.
M,b I]l Jij O
M r- ' b lf s
7' 0 U Go c
Q Fn, 1, 0f'r 1 F"i f' !:, i, p O.,
/'
d, i i [,LLJG,1'JUli i L<
i 79043404 30
t
] g w. r) r, h'kui )}y,
' ' I #' ( ( ^ "
- 8 ThiS c,pq-t shoals h,' con;: bro 1
'o i n' ac im -epyt ;nder tna Drovisinr nf I Of [M E.0, I.
(O',
When i', b3Va y o i f i n 4 'h3! t'n q g ? ' I.' '731s it t h-? r <; 3 0 t -' r er.olant inon ro,noctin, prnts are vcaot elo,
,a Ul! ' s s +' rir '#ri '
mer*
V.r / *r1\\V lJ2 a r S
,/
c a
/
p
/
/
t i
g p,
.- r. ( n', #p,
5q vlicoip,esident - Pao.r,$tatinn i
Enqino9r.na 301 constructh7n
'tr.
.1 e ri. Divis. Actinq D irector rc.
O f f i o_ o f I n s p ec t i., ' t Enfo-r-rr nt
, oy3 [ $ n.
Ornton, lirecto-
,.**ieo o
^
r
'd y r ! " 3 r
'>.4 y try P. qu ! i : i r-m,
h I f l'l, I' {
'n!
!.i m /
[], g '; ' 1
[ ' ', i l
l[
b
l l ($ i /S't [
y$] a l. - " ' N lj\\ ! !l. dl a"
-