ML20207B696
| ML20207B696 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 12/31/1998 |
| From: | UNION ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20207B694 | List: |
| References | |
| NUDOCS 9903080215 | |
| Download: ML20207B696 (4) | |
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Union Electric Callaway Plant 24-FEB-199913:19:06.12 Page1 UNION ELECTRIC COMPANY F
CALLAWAY PLANT POST OFFICE BOX 620 FULTON,'MO. 65251 i
l LICENSE: NPF-30 l
I
-Technical Specification 6.9.1.5 5
i i
End of Year Report 1998 1
l
- PERSONNEL > 100 MREM TOTAL MAN-REM a
{
WORK & JOB FUNCTION STATION UTILITY CONTRCT STATION UTILITY CONTRCT i
i REACTOR OPERATIONS & SURVEILLANCE 1
I MAINTENANCE & CONSTRUCTION 8
0 64 2.604 0.000 22.214 l
OPERATIONS 31 0
0 6.591 0.000 0.008 i
HEALTH PHYSICS & LAB 40 0
25 9.667 0.046 8.305 SUPERVISORY & OFFICE STAFF 10 0
1 2.469 0. 0 0 ".
0.379 ENGINEERING STAFF 9
1 0
3.370 0.581 0.024 ROUTINE PLANT MAINTENANCE
)
i MAINTENANCE & CONSTRUCTION 75 0
138 19.352 0.000 54.211 OPERATIONS 5
0 2
1.111 0.000 1.012 HEALTH PHYSICS & LAB 5
1 8
1.351 0.162 2.053 SUPERVISORY & OFFICE STAFF 3
0 2
1.131 0.000 0.403 ENGINEERING STA7F 8
1 2
2.051 0.158 0.589 I
INSERVICE INSPECTION MAINTEN.ANCE & CONSTRUCTION O
O 48 0.411 0.000 15.482 OPERATIONS 0
0 0
0.000 0.000 0.000 HEALTH FHYSICS & LAB 5
0 13 0.967 0.021 3.200 OUPERVISORY & OFFICE STAFF 2
0 0
0.800 0.000 0.012 ENGINEERING STAFF 4
0 2
0.929 0.000 0.415 1
OPECIAL' PLANT MAINTENANCE MAINTENANCE & CONSTRUCTION 1
0 17 1.122 0.000 5.606 i
. OPERATIONS 0
0 0
0.061 0.000 0.000 HEALTH PHYSICS & LAB 0
0 0
0.098 0.000 0.005 1
SUPERVISORY & OFFICE STAFF 0
0 0
0.037 0.000 0.197 i
ENGINEERING STAFF 1
0 1
0.439 0.000 0.350 WASTE PROCESSING MAINTENANCE & CONSTRUCTION 0
0 0
0.002 0.000 0.000 OPERATIONS 0
0 0
0.026 0.000 0.000 HEALTH PHYSICS & LAB' 13 0
0 4.306 0.000 0.034 SUPERVISORY & OFFICE STAFF 0
0 0
0.045 0.000 0.000 ENGINEERING STAFF 0
0 0
0.000 0.000 0.000 REFUELING OPERATIONS.
MAINTENANCE & CONSTRUCTION 3
0 27 0.753 0.000 11.935 OPERATIONS 2
0 0
0.556 J.000 0.005 HEALTH PHYSICS & LAB 10 0
15 3.327 0.013 3.219
. SUPERVISORY & OFFICE STAFF 4
0 0
1.158 0.000 0.022 ENGINEERING STAFF 4
1 6
1.519 0.328 3.204 TOTALS MAINTENANCE &' CONSTRUCTION' 87 0
294 24.244 0.000 109.448 OPERATIONS-38 0
2 8.345 0.000 1.025 HEALTH PHYSICS & LAB 73-1 61 19.716 0.242 16.816 SUPERVISORY & OFFICE STAFF 19 0
3 5.640 0.000 1.013 ENGINEERING STAFF 26 3
11 8.308 1.067 4.582 GRAND TOTALS 243 4-371 66.253 1.309 132,884 9903090215 990226 I PDR-ADOCK 0 R
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REACTOR COOLANT SPECIFIC ACTIVITY IN EXCESS OF TECHNICAL SPECIFICATION 3.4.8 LIMITATION This report is submitted in accordance with Technical Specification (T/S) 6.9.1.5 which requires submission of detailed information when the specific activity of the Reactor Coolant System (RCS) exceeds 1.0 microcurie per gram ( Ci/gm) dose equivalent I-131.
On 4/3/98 at 0200 CDT, the RCS was sampled and found to have a dose equivalent 1-131 of -
1.16 Ci/gm. Dose equivalent I-131 for the past two months had been approximately 2.3E-02 Ci/gm. This increase in activity followed a normal plant shutdown of the reactor for refueling (Refuel 9). The high dose equivalent I-131. level was caused by fuel cladding defects. Licensed operators entered the applicable action statement as follows:
"With the specific activity of the reactor coolant greater than 1.0 microcurie per gram DOSE EQUIVALEO -131 or greater than 100/E microCuries per gram of gross radioactivity, perform the sampling and analysis requirements ofitem 4.a) of table 4.4-4 until the specific activity of the mactor coolant is restored to within its limits..."
Appropriate sampling and analysis requirements were performed antil 0435 CDT on 4/3/98, i
at which time the RCS specific activity was restored within limits.
The following information is provided per T/S 6.9.1.5 requirements:
- a. ' Reactor Power History:
At 0020 on 4/1/98 reactor power was 87%. Reactor power was reduced to 64% at 3% per hour beginning at 0500 on 4/1/98. At 1201 CDT on 4/1/98, reactor power reached 64%
where it remained steady for about 15 hours1.736111e-4 days <br />0.00417 hours <br />2.480159e-5 weeks <br />5.7075e-6 months <br />. At 0301 CDT on 4/2/98, reactor power was decreased at approximately 3% per hour. The reactor was shutdown at 0200 CDT on
' 4/3/98.
Reactor power remained at 0% for the duration of the time the Dose Equivalent I-131 (DEI-131) limit was exceeded.
1 l
- b. Isotopic Analysis:
i
- Date.
Time -
Pei er DEI-131 I-131 1-132-1-133 I-134 1-135
- (%)
' Ci/gm Ci/gm uCi/gm pCi/gm pCi/gm
. Ci/gm 3/30/98 0020 87 2.59E-2 6.06E-3 6 23E-2 3.82E-2 9.97E-2 6.62E-2 1
4/1/98 0020 87 2.61 E-2 6.63E-3 6.19E-2 3.75E-2 1.02E-1 6.47E-2 4/2/98 0820 47 2.88 E-2 1.37E-2 7.08 E-2 3.08 E-2 6.47E-2 3.68E-2 4/2/98 1620 29 3.08E-2 1.87E-2 6.38E-2 2.62E-2 3.71 E-2 2.54E-2 4/2/98 2010 18 3.13 E-2 2.01 E-2 6.61 E-2 2.33 E-2 3.47E-2 2.36E-2 4/3/98 0200 0
1.16 1.00 2.53E-1 5.17E-1 2.40E-2 1.46E-1 4/3/98 0335 0
1.25 1.08 2.57E-1 5.32E-1 3.35 E-2 1.43E-1 4/3/98 0435 0
9.81 E-1 8.53 E-1 1.94E-1 4.16E-1 2.43E-2 9.86E-2 4/3/98 0800 0
7.69E-1 6.77E-1 1.24E-1 3.04E-1 4.46E-2 5.95E-2 The cleanup flow through the Chemical Volume and Control System mixed bed c.
demineralizer was at 120 gal / min from 0020 on 4/1/98 until the reactor was shutdown.
Cleanup flow remained at 120 gal / min while DEI-131 was above 1 Ci/gm.
j
- d. The DEI-131 exceeded 1 Ci/gm for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> 35 minutes from 0200 to 0435 on 4/3/98.
Also provided for your information is a time line graph comparing I-131 and I-133 specific activity.
1 uCi/gm
?
a a
N N
N 8
8 m
m m
m m
8 h
h 2
3/29/9812:00 PM 3/30/9812:00 AM -
u l
3/30/9812:00 PM -
3/31/9812:00 AM -
g I I 8 M 3/31/9812:00 PM -
y O
4/1/9812:00 AM -
n O
C2.
4/1/9812:00 PM -
4/2/9812:00 AM -
1 4/2/9812:00 PM -
4/3/9812:00 AM -
4/3/9812:00 PM -
4/4/9812:00 AM 9
4 I
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