ML19308D433
| ML19308D433 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 05/17/1977 |
| From: | Stewart W FLORIDA POWER CORP. |
| To: | |
| Shared Package | |
| ML19308D405 | List: |
| References | |
| NUDOCS 8002280737 | |
| Download: ML19308D433 (2) | |
Text
L.it.,we w w4 L. V 4.s w a e iL.I LJ 840 L/
CONIDOL OLOCK:l l
l l
l l
l
[pLCASE PRINT ALL REQUIRED INFCW.1 AT*C.
i 1
6 e
LCf N$t t LCENSE EVENT t
NAME LCEN5g NUMutn TYPE l'!8't lFlticl nl rl 3l l 0 l 0-l-l 0 l 0 l 0 l 0 l 0 l-l 0 l 0 l l4 l 1l1l1l1l l0l3l 7 DU 14 15 26 2G 30 31 32 "N nan cattconY t
DOCr.tf NUMotn tvtNT OATE ACPont OAft h CON'T l - l - l l Ll l0l5l0l-10l3l0l2l l0 l 4l 2l 4 l 7 l 7 l l0 l5 l1 l7 l 7l1 7 0 57 bu 59 6C G1 68 09 74 75 t
EVENT DESCDiPTION o
l In Mode 1 operation with Reactor Building purge in progress, the primary containment' 7 09 t
@l average temperature $xceeded 130 0 F. contrary to Technical Specificati)n 3.6.1.5.
Re-7 0U U
EE l dun dan cy N/A.
Non-repetitive occurrence.
SWV-151 was opened to allow cooling water to 7 09 t!
bl Industrial cooline System and Reactor Buildin'c averace temoerature decreased re t u rn en 7 U9 a
35 I to less than 130 F.
(LER 77-41) 7 09 m,g L
SYSTIM CAULt Ct,ur'ONt NT COMPONENT CODE CODL COMPONENT COct auPRA6s MANufAC1unisa v106,At oN O
l Sl Bl {
l Vl Al Ll Vl Ej X]
lNl
[Zl9l9l9l l Nl 7 09 to 11 12 17 43 44 47 48 CAUSE DESCRIPTION 0
hl Nuclear services closed evcle cooling valve SWV-151 was closed. SWV-151 was opened 7 00 6.
30 l and systetr restored operable 24 April 1977; 7 JL9 L.
g 7
f 4CILrty METHOO OF STATUS
% POWER OTHER STAILS DISCOVLnY OrSCovtnY OttCAPTON b
l 0_ l 6 l 4 l l
N/A l W l
N/A 1
70 9
10 12 13 44 45 46 Ut ACIM17 C04 TENT R'LI ASt o Or f:lLI ASE l AMOUNT f'F ACIMTV
]
{
LOCAf TON OF ACLEASt y
N/A l
l N/A l
7 8 9
10 11 44 45 Ot PERSONNEL EXPOSUAES NUMDin TYPt OtSOAiPTON H l 0l 0l 0l Wl N/A l
7 09 11 12 13 St.
PERSONNEL INJunlES NUM0tR OCSCR4PfiON 3 l 0l 0l 0]
l N/A l
7 09 11 12 6$
OFFSITE CONSEQUENCES IE l N/A l
7 0U DO LOSS OR OAMAGE TO FACILITY 1 YI't CC SCR:PTCP.
bdl N/A l
7 89 10 bD PUDLtCITY b !..
i/A l
7
,;t,
l OITIONAL FACTOnS b
8002280 23 7
/
00-See a t tached Supplomont arv In forma tion
- l tus b
7 UU
\\
ane N AMI -
'W.
P.J L CH;t l' t I4 f0NI. (81M 866-4159
SUPPLEMENTARY INFORMATION 1.
Report No:
50-302/77-41 2.
Facility:
Crystal River Unit #3 3.
Report Date:
17 May 1977 4.
Occurrence Date:
24 April 1977 5.
Identification of occurrence:
Primary containment average air temperature exceeded 130 F. contrary to Technical Specification 3.6.1.5.
6.
Conditions Prior to occurrence:
Normal Mode 1 operation.
~
7.
Description of occurrence:
At 1945 with Reactor Building purge in progress, the primary containment average air temperature was 1410 F.
Entered action statement of T.S.3.6.1.5.
Nuclear services closed cycle cooling valve SWV-151 was found closed.
SWV-151 was opened allowing cooling water to return to Industrial Cooling Sys-tem, and the containment averago temperature decreased to less than 1300 F.
at 2029.
8.
Designation of Apparent Cause of Occurrence:
Nuclear services closed cycle cooling valve SWV-151 was closed.
The reason for this is unknown.
9.
Analysis of Occurrence:
The initial temperature condition as assumed in LOCA Accident Analysis was exceeded, however, no hazard to plant or public was presented by this occur '
rence.
10.
Corrective Action:
Normal shi ft surve' llance (SP-300) checks Reactor Building temperature once i
per shift. Since this occurrence, plant personnel have been cautioned re-garding unauthorized manipulation of valves.
11.
Failure Data Fir s t. occurrence of this event.
-.