ML20071A971

Annual Personnel Exposure & Monitoring Rept for 1993

ML20071A971
Person / Time
Site:	Callaway
Issue date:	12/31/1993
From:	UNION ELECTRIC CO.
To:
Shared Package
ML20071A969	List: ML20071A967 ML20071A971
References
NUDOCS 9403040362
Download: ML20071A971 (4)

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Union Electric Callaway Plant Mon Jan 24, 1994 11:28:33 am Page: 1 Uhkbh blbbTRkb bbMPkhh CALLAWAY PLANT I l POST OFFICE BOX 620 l FULTON, MO. 65251 l Technical Specification 6.9.1.5 End of Year. Report 1993 ]

1. PERSONNEL (> 100 MREM) TOTAL MAN-REM WORK & JOB FUNCTION STATION UTILITY CONTRCT STATION UTILITY CONTRCT

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.....-------------------------------------------------------------- l REACTOR OPERATIONS & SURVEILLANCE MAINTENANCE & CONSTRUCTION 0 0 107 .371 .000 35.982 OPERATIONS 67 0 2 17.458 .135 .665 HEALTH PHYSICS & LAB 22 0 33 5.113 .000 9.551 SUPERVISORY & OFFICE STAFF 4 0 0 1.915 .034 .164 ENGINEERING STAFF 3 0 0 .947 .018 .018 ROUTINE PLANT MAINTENANCE 18.924 MAINTENANCE & CONSTRUCTION 84 0 58 20.552 .000 OPERATIONS 4 0 0 1.794 .001 .022 HEALTH PHYSICS & LAB 0 0 0 .368 .000 .225 ,

SUPERVISORY & OFFICE STAFF 2 1 0 .643 .312 .037 I ENGINEERING STAFF 3 0 1 .682 .000 .349 INSERVICE INSPECTION .523. '

MAINTENANCE & CONSTRUCTION 0 0 81 .000 38.503 l OPERATIONS 6 0 1 1.307 .000 .337 HEALTH PHYSICS & LAB 1 0 14 .508 .000 2.993 SUPERVISORY & OFFICE STAFF 1 0 0 .205 .000 .000  !

ENGINEERING STAFF 8 0 5 2.544 .020 2.896 J

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kPbbEEb~PbEhT kEIUTbbkUbb MAINTENANCE & CONSTRUCTION 4 0 60 .831 .000 22.113

! OPERATIONS 0 0 1 .014 .000 .117 HEALTH PHYSICS & LAB 0 0 0 .007 .000 .043 SUPERVISORY & OFFICE STAFF 1 1 0 .203 .203 .000 ENGINEERIEG STAFF 1 0 10 .344 .000 6.426 WASTE PROCESSING MAINTENANCE & CONSTRUCTION O O O .006 .000 .094 OPERATIONS 14 0 0 5.630 .000 .113 HEALTH PHYSICS & LAB 3 0 0 .946 .000 .322 SUPERVISORY & OFFICE STAFF 1 0 0 .407 .000 .000 t ENGINEERING STAFF 0 0 0 .000 .000 .000

! MAINTENANCE & CONSTRUCTION 3 0 25 1.378 .000 11.863 OPERATIONS 4 1 0 1.088 .154 .000 l HEALTH PHYSICS & LAB 0 0 18 .064 .000 4.973 l SUPERVISORY & OFFICE STAFF 0 0 0 .059 .035 .000 ENGINEERING STAFF 1 0 1 .483 .000 .303 TOTALS MAINTENANCE & CONSTRUCTION 91 0 331 23.661 .000 127.479 OPERATIONS 95 1 4 27.291 .290 1.254 HEALTH PHYSICS & LAB 26 0 65 7.006 .000 18.107 SUPERVISORY & OFFICE STAFF 9 2 0 3.432 .584 .201 16 0 17 5.000 .038 9.992

[ -- ENGINEERING STAFF

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237 3 417 66.390 .912 157.033 GRAND TOTALS TOTAL = 224.335 9403040362 940217 PDR ADDCK 05000483 R PDR e

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- REACTOR COOLANT SPECIFIC ACTIVITY IN EXCESS OF TECHNICAL SPECIFICATION 3.4.8 LIMITATION This report is submitt d 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 (pCi/gm) dose equivalent I-131.

On 10/1/93 at 0235 CDT the dose equivalent I-131 of the RCS was sampled and found to be 1.12 pCi/gm. The value during normal operation for the past two months had been approximately 0.28 pCi/gm. This increase in activity followed a normal shutdown of the reactor for refueling. 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 EQUIVALENT I-131 or greater than 100/E microCuries per gram of gross radioactivity, perform the sampling and analysis requirements of Item 4.a) of table 4.4'4 until the specific activity of the reactor coolant is restored to within its limits. . .

Appropriate sampling and analysis requirements were performed until 0451 CDT on 10/1/93, 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 0000 CDT on 9/29/93 reactor power was 79%. At 1700 on 9/30/93 reactor power was decreased 10% an hour. At 2300 reactor power was held at 20% until the reactor was shutdown at 0150 on 10/1/93.

Power remained at 0% for the duration of the time that the dose equivalent I-131 (DEI-131) limit was exceeded.

( b. Isotopic analysis:

I Date Time DEI-131 I-131 I-132 I-133 I-134 I-135 (pci/gm) (pci/gm) (pci/gm) (pci/gm) (yci/gm) (pci/gm) 9/30/93 0150 .194 .053 .586 .305 .514 .041 10/1/93 0235 1.12 .827 .664 .837 .102 .431 10/1/93 0451 .92 .702 .462 .647 .025 .292 l

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c. The cleanup flow through the Chemical Volume and Control System mixed bed demineralizer was at 125 gal / min from 0235 on 9/29/93 until the reactor was shutdown. Cleanup remained ht 125 gal / min while the DEI was above 1 pCi/gm.

d. The DEI-131 exceeded 1 pCi/gm for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> 16 minutes from '

0235 to 0451 on 10/1/93.

Also provided for your information is a time line graph comparing I-131 specific activityiand I-133 specific activity.

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