ML20058M692
| ML20058M692 | |
| Person / Time | |
|---|---|
| Site: | Zion File:ZionSolutions icon.png |
| Issue date: | 12/15/1993 |
| From: | Wright G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Tuetken R COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML20058M694 | List: |
| References | |
| NUDOCS 9312210077 | |
| Download: ML20058M692 (2) | |
See also: IR 05000295/1993018
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UNfiED STATES
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NUCLEAR REGULATORY COMMISSION
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December 15, 1993
Docket No. 50-295
Docket No. 50-304
Corrnonwealth Edison Company
ATIN: Mr. R. Tuetken
Site Vice President
Zion Nuclear Power Station
1u5 Shiloh Boulevard
Zion, IL f;0099
Dear Mr. Tuetken:
This letter refers to the in:pection conducted by Mr. H. A. Walker arid others
of this office from October 4 through 29, 1993.
The inspection included a
review of authorized activities for your Zicn Nuclear Power Station.
At the
conclusion of the. inspection, the findings were discussed with those members
of your staff identified in the enclosed recort.
Areas examined during the inspection are idcntified in the report. Within
these areas. the inspection consisted of selective examinations of procedures
and representative records, interviews with .ersonnel and observation of
act'vities in progress.
The purpose of the 'upection was to verif that
engineering activities at the Zion Station were conducted safely ard in
accordance with NRC requirements.
The inspection team concluded that engineering and technical suppor was
acceptable with improvements noted over our .ast engineering and technical
suport inspection.
The inspection team no:50 that substantial rescurces were
sct.eduled to bc expended to improve and upgra:e the emergency diesel
generators and the service water systems.
h; wever, the team also noted that
while not pervasive, some of your staff wert reluctant to respond to issues
brcJght to their attention unless we could snow the existence of a regulatory
recuirement.
Finally, several unevaluated conditions witt. Rossible adverse impacts on plant
safety were noted.
These unevaluated conditions should have been icentified
anc resolved early in the design change process.
Instead, considerable
nrompting on the part of the NRC was required to get your staf f to address
these issues.
For example, evaluations were r.ot performed to assure that
alternate methods for cooling the temporary sr.ent fuel pool could be
implemented in time to prevent pool boiling if thc temporary service water
system was lost or that the adding and drairing of water (feed and bleed
meinod), which was an alternate method to cceirol fuel pool tempera:ure, woulc
not reduce the baron concentration to unacce' table levels.
The reluctance of
m of your * af f to proactively respond t
- u is and the failuri
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co-~ ete eve.-
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December 15, 1993
In other areas, unevaluated conditions included seismic impact of scaffolding
and miscellaneous components in plant operating areas.
Engineering
evaluations of the conditions, other than those related to the spent fuel
storage area, indicated that the safety impact of the conditions was minimal.
y
However, once again these evaluations were not made until after the conditions
were identified by the NRC.
No violations of NRC requirements were identified during the course of this
inspection.
Ir. accordance with 10 CFR 2.790 of the Commission's regulations, a copy of
this letter and the enclosed inspection report will be placed in the NRC
Public Document Room.
We will gladly discuss any questions you have concerning this inspection.
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Sincerely,
A d ht bv@
Geoffrey C. Wright. Chief
Engineering Branch
Enciosure: Inspection Reports
No. 50-295/93018(DRS);
No 50-304/93018(DRS)
cc w ' enclosure:
L.
DelGeorge, Vice President
fL: lear Oversight and
Regulatory Services
T. Eroccolo, Station Manager
S. saplan, Regulatory
Assurance Supervisor
D. Farrar. Nuclear Regulatory
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Services Manager
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OC/LFDCB
Res" dent inspectors-Byron,
Braidwood, Zion
Ricr.ard Hubbard
Maycr, City of Zion
J.
. McCaffrey, Chief
P alic Utilities Division
Licensing Project Manager, NRR
Rot i rt Newmann. Office of Public
(: nsel, Stat: of
)inois
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Sti.e Liaisor, Lificer, W1
Sta-
Liaisor f,fficer. Il
Ltu < man, 11~:r;is Commerce
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