ML20207B696

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Annual Personnel Exposure & Monitoring Rept for 1998
ML20207B696
Person / Time
Site: Callaway Ameren icon.png
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

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  1. PERSONNEL > 100 MREM TOTAL MAN-REM a

{ WORK & JOB FUNCTION STATION UTILITY CONTRCT STATION UTILITY CONTRCT i

i REACTOR OPERATIONS & SURVEILLANCE 1

. MAINTENANCE & CONSTRUCTION 8 0 64 2.604 0.000 22.214 I 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 l 1

OPECIAL' PLANT MAINTENANCE l 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. l 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 P

, 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.

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b. Isotopic Analysis:

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- 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 I 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 l
c. The cleanup flow through the Chemical Volume and Control System mixed bed 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. I

1 uCi/gm a a --  ?

N N N 8 m

8 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 -

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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

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