ML20126E819
| ML20126E819 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 09/14/1978 |
| From: | BECHTEL GROUP, INC. |
| To: | MISSISSIPPI POWER & LIGHT CO. |
| Shared Package | |
| ML19339D014 | List:
|
| References | |
| CON-9645 A-0001, A-1, NUDOCS 8103020625 | |
| Download: ML20126E819 (1) | |
Text
'
A UCENSEE EVENT REPORT
. CONTFiOL BLOCK-l l
l l
l l
(PLEASE PRINT ALL REOUIRED INFORMATION 1
6 LICI N".E E 4 Cl Nbli EVENf NAMI LCf NSE NUMBE84 7YPE TYPE
@ l Nl Jl0lC lP l1l
[ 0 l 0l-l 0l 0l 0 l 0 l 0 l-l 0 l 0l l 4 l 1 l 1} l l 0]
l0l1l 7 89 14 15 25 26 03 31 32 Wu DOCKET NUMain EVEN1 UA1E kiPORT Otif CAttoonY f
01 CON'T l M l I l
[_TJ l L l l 015 l Ol-l 0121119 l l0l1l0l6l7l6l l 0 l 11 I l 617 l6 7 0 57 50 59 60 61 68 69 74 7S DC EVENT DESCAIPTION BE I During a secondary containment Icak rate test, which was con.fucted in conjunction l l 7 89 UL I
Q [ with the ECCS modification, the reactor building vacuum was calculated to be j '
7 89 ed l Q l 0.1243 inches of water. This is a violation of Technical Specification, Paragraphs l
f 4.5.J.2 and 3.5.B.1, Failure of the Standby Gas Treatment System to demonstrate U
7 89 U,.
a l capability to maintain 0.25 inch of water vacuum.
(R0 50-219/76/3/1P).
]
7 89 UC wt C St M$uYcNa Coot COMooNt N T Coof s
s vrufioN o
lS l A l lAl lZ lZ lZ l Zl Z] Zl l Zj lZ l9 l9 l9 l
]
7 89 10 11 12 17 43 44 47 48 CAUSE DESCAIPTION
@ l (1) The inner railroad airlock was not closed properly and the packinn in the l
7 89 60 R5 l railroad whec1 flange was not in place.
(2) An exhaust duct in the trunnion room l
7 89 00
[ was drawing air from the turbine building through a MSIV open for maintenance.
l 1
(g0pINUED BELOW) 7 09 eo gg g, Status
% POWEH OTHEA STAIUS oiECOVEnv DiSCOVE AY DE SC AfP TON Q
y l0l0l0J \\
NA l W l SECONDARY CONTAINMENT LEAK RATE TEST l 7 8 9
10 12 13 44 45 46 80 ACTivif y CONit NT Rit E ASED OF Af tt ASE l AMGJNT OF ACTIVITY LOCATON OF AELE ASE
[Zj NA l
l NA l
MR l Zl 7 8 9
10 11 44 db 00 PEASONNEL EXPOSURE 7 NUMfif A T Y F'l DESCATPflON n [0]0101
[ ZJ L
NA l
7 89 11 12 13 60 PERSONNEL INJUAiES Nt arn OE SC n.PtioN 7 89 11 12 00 OFFSITE CONSEQUENCES l
NA A
l t
7 89 60 LOSS DA OAMAGE TO FACILITY i e Pi Ot SCH Pir0N L Z_J l NA l
1 7 89 10 80 PUBLICIT Y gl NA I
7 89 UO AOOITIONAL FACTOAS I
@ l CAUSE (CONTINUED): (3) The trunnion room door was open to allow ventilation for the l
7 89 UU work being done on the MSIV without the trunnion room exhaust duct being gl scaled, f ~
r NAM M
' PHONE.
201 539-6111 h M.h h h b ald A. Ross, Manager-huclear Generating Stations o
eu...,
Nith1 Telephone Inte of
' ort Inte: January 6,.19' Occt-ence: Januarj 6, 1976 Initial Written Time of Report Date: January 7,1976 Occurrence: 1500 OYSTER CREEK IIU'71 EAR GE E RATI:!G STATIO!!
FORKED RIWR, ID JERSEY 08731 Reportable Occurmnce Report IIo. 50-219/76-3/1P IDEllTIFICATIO:1 0F OCCU:FE CE:
Violation of the Tech iical Specificatir s, parag-Ephs L.5.J.2 and 3.5.B.1; Failum of the Standby Gas, Trean:.ent Systen to demonstrate capability to raintain 0.25 inch of water ' tac'er...
This event is considered to be a Reper able Cccurrence as defined in the Technical Specifi~caticr.s, parag-aphs 1.15.3, 1.15.E, and 1.15.G.
C0tIDITIO:'S PRIOR 40 OCCURRE:!CE:
Steady State Power Routine Shutdc'..n
~
Hot Standby Operation Cold Shutdown inad Changes ? ring XX Refueling Shutdown Routine Pcwer Cperation Routine Sta" tup
.Other (SpeciPj)
Operation
'Ihe reacter was shutdc>.n with the coolant tege atum less than 212 F, the reac cr vessel and d~/well heads reroved, and the node switch in Refuel fcr nerf reNel'r.E operations.
IESCRIK'IO!I OF OCCUPE.I:2:
On January 6,1976 at 1500 hours0.0174 days <br />0.417 hours <br />0.00248 weeks <br />5.7075e-4 months <br />, a seconda j eentai r.ent les2 rate test was conducted in conjuncticn with the ECOS :'.cdi-fication- 'Ihe Reactor Bu'1 ding Vacutr. was calculated tc te 0.12113 inches of water.
APPAFE;T CAUSE OF OCCUF/'S;2:
Design I'rocedure Manufacture Unusual Ser/ ice Ccndition Installation /
Inc. Envircrr. ental r ure Construction Corpcra
- o XX Persornel Othe" (SpeciP/)
4 An inspection of the Reactor Buildir.g revealed the following leakage paths:
(1) 'Ibe inner railroad airlock door was not closed properly and the packing in the railroad wheel flange croove was not in place.
(2) An exhaust duct in the trunnion room ward-awing air from the turbine building through a 1*SIV open for traintenance.
r
- ~
5 4
. Reportable Cccurrence Report No. 5-219/76-3/IP Page Two I
(3) The Trunnien Roor door was open to allow ventilation for the work being done on the MS1'V without the Trunnion Room exhaust duct being sealed.
Z AllALYSIS OF OCCUPPEliCE:
Significance of the event ray be considered to be r.1".1 al in that while the SB3TS did not draw tha requ'"ed vacuu.,
its perforance was sufficient to :nitigate the consequences -
of a refueling acc$ dent.
CCp=.m ~_r=w v.
AC"1_ N.
P..a. n.4
- was da..a
.._d.r..a d. *.h_a,,
m
^^"d
~
.c=.~.e._"s"...=_.'...a...., Iri.a.e.W, wa s.n^ i n.e-a" r..a*.,, al'
."e.*uc_ '__d.3 ~. '.=.~.e d e'a_"_r _'
.e
..=."a_
r.' ' c d r.3.e* a -' r $ * '..n ^..# '.".a.
' e c.'r.e_c,=. t.e
.".s,
'.'.m..
s*,,c.ty. d.
d a
.o.
. ~
f.%. e..v a._ oe,..oc de.en.
..e p
v _e.~c o. A, &%a a z.% c,. ~~ A.. n. ~.
- v..ae mR v '_ n'.a A.,
. a.
.a ou..
amA & %..c_
n_s.' e nL' c'w., w e.s.p c. c_ nc.c. A c e.,, e.v,a m. e.*, _,..
- d.
i.
. 2.41 ". o_n A.
Q _
_.e.v e.m a
.~ w a
Af&evs
&.%..o..c. u_wa._c _e s em. e.e.o. vu.n. A_n =.=.e _ a ". p A., &.b o & a. c *
..=p e.
mo.s. e C.*. g:, A v.
.~
and a- 0. ~t _' 'C' ' n c h t. -.~a." '. u-".".. ".. a s d a... -.= *.=. w. a. d.
.. '.". a e -
c 4,,.4 ~~. 4 _S e..e.
- m.
- a_c 1 a_ A.
G.h o_s. * > a. _.c.e..a_.vswe._a
- v_e A.
a_a_n_' e. n_ /'. A r_m
.h.p A.
M. a. c..e.
a
.. _.c e-
-_a=.=
. " _ " = _ ~ "... +. *.~.d c e..a. d '.b.a. ".~'."_or e.
d__e v ~ ^., -"-'."_ d.a.
c m
c
- y..
y y
- n. m m_, e +.4 ee.
o.C' had
.p n, ban _n c_' nspA. e m.
a m' e
- e.n m'..
.' t_:,
n e
..e nv.
~./
g y. _,
.g..
~
.y
.o..ef.e.
A.
.o _..,.
.g..
.e.e.
.e.m. c_ e. c_, e.w.~w.e-m.e p mor,,. +. m
,.._4_,,
4 w
m
& w
- y..,.,._, * =. va. ~* a... a. a."
.-a..^. e c.". c e. "'..=
_a..-*.ed eva..r...
T.*
'- r o
- v. w y.
u
,. u.m_ m. v.._,. e_,,,e.
ha tu_:,
_c.A.,m.
.c
.e._
ee c.
4,,
m e
y.
- k..* r e'.. s... ~
1 ce. J.i a+. 4 e.e.
".ocr p. 3c..e c. r 1 *
- cr.r.* o J r.e p_
we m.t t Jn c,,.,~,c,m,,.,
.3..ee__..
.-.e....m..e.., *e.
- eo w
r
.s-m c. 4. a.. s, w..
, e. p,.,c.,
_4= p e.e_
e x,2.. y.
y s y sc e e.4i v. o..f.J'_*
.e s
- b. _l e n'.a. A.
'_"*=_J*
&,,k.a ep e, J.
c.,%.
4 nme.neo.%+
A.s m..-
a e
g e
a
.c
. s..
te revised to prof _de additienal direction fcr blocking the.
regt. ired ducts.
FAILU E DATA:
N/A
/ A-M'T"'. 7 DA'"E:
! l + t l 'e PF?AEED BY M
e
,,. =>. b. e
,,:.n')
- k. k D.Mk l
APPROVED BY:
R. /, Farshall f
4 I
I s
4 i
t.
I I
i
..m.
_.-m
- - -