ML20149E311
| ML20149E311 | |
| Person / Time | |
|---|---|
| Site: | Dresden, Quad Cities, Zion, LaSalle  |
| Issue date: | 05/23/1994 |
| From: | Axelson W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Wallace M COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 9405310009 | |
| Download: ML20149E311 (4) | |
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MAY 2 31994 Docket No. 50-10, 50-237, 50-249; Docket No. 50-373, 50-374; Docket No. 50-254, 50-265; Docket No. 50-295, 50-304 Commonwealth Edison Company ATTN:
Mr. M. J. Wallace, Vice President Chief Nuclear Officer Executive Towers West III 1400 Opus Place, Suite 900 Downers Grove, IL 60515
Dear Mr. Wallace:
Enclosed is the analysis of high dose reactor sites that was recently shared with you during a meeting with Mr. John B. Martin, Region III Administrator.
Please feel free to call me with any questions you may have regarding this information.
Sincerely, cmCmAL S!Gtc 97 d. t / nLSci:
W. L. Axelson, Director Division of Radiation Safety and Safeguards
Enclosure:
As stated See Attached Distribution 9405310009 940523 PDR ADOCK 05000010 P
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KAY 2 31994 Commonwealth Edison Company 2
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P L.10. DelGeorge, Vice President, l
- Nuclear Oversight and Regulatory Services Gary F. Spedl', Station Manager J. Shields, Regulatory Assurance L;
Supervisor L
D. Farrar, Nuclear Regulatory
,i Services Manager.
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D. J.-Ray, Station Manager
-1 J. Lockwood, Regulatory Assurance r,
F.
l' Supervisor G. Campbell, Station Manager N. Chrissotimos, Regulatory Assurance 7
. Supervisor-T. Broccolo, Station Manager S. Kaplan, Regulatory Assurance Supervisor ei OC/LFDCB Resident Inspectors LaSalle, Dresden, Quad Cities, Zion Richard Hubbard Nathan Schloss, Economist Office of-the Attorney General Licensing Project Manager, NRR l State Liaison Officer Chairman, Illinois Commerce 1
Commission'.
Mayor, City of Zion
- R. V. Crlenjak, DRS S. Stein, SRS W. L. Axelson, RIII T. O. Martin', RIII bec w/ enclosure:
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Top 10 Avgraao Individual DoseQ For the five year period 1987-1991, sir. out of the highest ten plants based on the annual individual dose per year were from Region III.
For the five year period 1988-1992, this jumped to seven out of t7n were from Region III.
Attached are the data for the top ten sites for each of these periods.
Below is a discussion as to the reason for the high doses at these plants.
LaSalle is high primarily because they are a high source term plant coupled l
with a history of poor rad worker practices.
In addition, in 1988 they had an extremely high dose'(2470 rem) due to major outage one of a kind work. Their weak source term reduction program and poot 2GL rence to the ALARA progrkm has and will continue to keep them near the top of the list until they take effective corrective actions to address these problems.
Point Beaqh shows up as high primarily because of their small work force.
With less workers to distribute the dose between, the average per worker will be high. As the attached data show, the average number of workere with measureable dose at Point Beach is less than half the average for PWRs.
Overall, the average collective dose is below average compared to other PWRs.
Ir. addition, Point Beach has decreased their annual dose.each year for the past five years.
Bio Rock Point also shows up high primarily due to a small work force.
Exacerbating this is a relatively high source term and the need for age-related maintenance.
Ruane Arnold has a high average individual dose due to a combination of a high source term in addition to a small work force. Their recent efforts in addressing the source term problem have been excellent.
This is an area they are continuing to work on and as a result we should continue to see dose decrease at Duane Arnold.
Dresden is high because it is a high source term plant with a history of poor rad worker practices.
In addition, much of the recent dose has been expended on efforts to improve plant material condition and the long-term availability of equipment. These problems arose from years of poor maintenance and operating practices.
I Zion has generally suffered from being a typical Ceco plant.. They had a
-l generally poor ALARA program, poor rad worker practices, and an above average source term.
However, in the past several years we have seen significant improvements at Zion.
The ALARA program is improved, the RPM is extremely agressive in pursuing improved rad worker practices, and efforts are being
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made to reduce the source term.
But, they still have to improve overall station buy-in to ALARA.
1 Ouad cities is high, as with Dresden, becruse it is a high source term plant and has a history of poor maintenance and operating practices that requires the expenditure of significant dose to rectify.
However, unlike Dresden and LaSalle, poor rad worker practices have not contributed greatly to dose.
A recent problem with a torus cleanup and re-coating project has shown that poor planning of high dose jobs is also a problem.
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Average Neasureanle Individual wor ke r s '.i i t h Average Average Dose / Year Measureable tallectice co;lective Plant trend Dose / Year / Reactor _m e/Yr/ Reactor iose/\\fa-Y:.
LaSalle 1&2 ( B%R )
0.65 10--
01 U.c Indian Point 2 (P%R) 0.63 156-993 1.-
Point Beach 1&2 (P%R) 0.60 353 211 0.5 Dig Rock Point (B%R) 0.58
'05 4..
Duane Arnold (B%R) 0.57 do 50s 1.3 Dresden 2&3 (bur) 0.55 1100 609 1.-
i Main Yankee ( P?.R )
0.54 864 467 0.-
4 Zion 1&2 (P%il) 0.52 654 341 0.5 Brunswick 1&2 (BwR) 0.43 1531 728 1._
4 ritzpatrick (B%R) 0.48 1393 664 1..
Average - BhRs 0.38 1178 452 0.9 Average - PVRs 0.33 914 304 0.5
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Top 10 Average Individual Doses 19SS.992
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Average Measureable Individual Workers with Average average Dose / Year Measureable Collective Collective P1 ant (rem)
Dose / Year / Reactor Dose /Yr/Reactr.r Dose /hfN-Yr Indian Point 2 (P%R) 0.61 1269 7C 9
- .2 LaSalle 1&2 (B%R) 0.59 1145 68 0.9 Big Rock Point (Buk) 0.54 401 21 6 45'V Duane Arnold (D%R) 0.54 880 41 1.2 Point Beach 1&2 (P%R)
U.53 343 181 0.-
Zion 1&2 (P%R) 0.53 723 380 0.0 Dresden 2&3 (B%K) 0.5'
'0 6 556 1..
Main Yankee (P%R) 0.47 851 414 0.e Hatch !&2 (B%R) 0.47 1088 512 0.-
Quarl Cities 1&2 (bwk) 0.46 953 442 0.'
Average - B%Rs U.36
'143
>l2 0.
Average - P%Rs 0.31 SS 269 0..
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