ML19338C972
| ML19338C972 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 08/03/1977 |
| From: | Allan J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Brian Lee COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML19338C973 | List: |
| References | |
| NUDOCS 8009120715 | |
| Download: ML19338C972 (2) | |
See also: IR 05000010/1977020
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NUCLIEAR REGULATORY COMMISSION
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1977
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Docket No. 50-10
Docket No. 50-237-
Docket No. 50-249
Commonwealth Edison Company
ATTN:
Mr. Byron Lee, Jr.
Vice President
P. O. Box 767
Chicago, IL 60690
Centlenen:
This refers to the inspection conducted by Messrs. T. H. Essig
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and L. R. Greger of this office on June 28 and 29 and July 8,
1977, of activities at Dresden Nuclear Power Station, Units
4,
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2, and 3, authorized by NRC Licenses Nc. DPR-2, No. DPR-19, and
No. DPR-25 and to the discussion of our findings with
Mr. Stephenson and others of your staff at the conclusion of
the inspection.
Ine enclosed copy of our inspection report identifies areas
e.amined during the inspection. Within these areas, the
inspection consisted of a selective examination of procedures
and representative records, observations, and interviews with
personnel.
During this inspection, certain of your activities appeared
to be in noncompliance with NRC requirements, as described
in the enclosed Appendix A.
This notice i- sent to you pursuant to the provisions of
Section 2.2W of the NRC's " Rules of Practice," Part 2, Title
10, Code of Federal Regulations. Section 2.201 requires you
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to submit to this of fice within twenty days of your, receipt
of this notice a written statement or explanation in reply ,
including for each item of noncompliance: (1) corrective
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action taken and the results achieved; (2) corre.ctive action
to be taken to avoid further noncompliance; and (3) the date
v'.en full compliance will be achieved.
In accordance with Section 2.790 of the URC's " Rules of
Practice," ." art 2, Titic 10, Code of F.edt.t al Regulations,
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Commonwealth Edison
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copy of this notice, the enclosed inspection report, and your
response to this notice will be placed in the
'RC's Public
Document Room, except as follows.
If this rep <rt contains
information that you or your contractors beliese to be
proprietary, you must apply in writing to this if fice, within
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twenty days of'your receipt of this notice, to withhold such
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information from public disclosure. The application must
include a full statement of the reasons for which the infor-
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mation is ' considered proprietary, and should be prepared so
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that proprietary information identified in the application
is contained in an enclosure to the application.
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We will gladly discuss any questions you have concerning this
inspection.
Sinc.erely,
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mun}H.
mes M. Allan, Chie f
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Fuel Facility and
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Materials Safety Branch
Enclosures:
1.
Appendix A, Notice of
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Violation
2.
IE Inspection Reports
No. 50-010/77-20, No.
50-237/77-19, and
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No. 50-249/77-19
cc w/ encl:
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Mr. B. B. Stephenson,
Station Superintendent
Central Files
Reproduction Unit NRC 20b.
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Local PDR
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Anthony Roisman, Esq.,
Attorney
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a)
Auto start and pump acceleration sequence timing- test
with simulated undervoltagt initiation signals,
b)
At conclusion of (a), verify that overspeed limits are
not exceeded by operating with the condensate pump as
the only load and then shedding that load.
4.
Regulatory Position C.2.6:
Demonstrate ability to synchronize with offsite power while
connected to emergency. load, transfer load to offsite
power, isolate diesel generator, and restore to standby
status.
a)
Specific tests to demonstrate this capability will not
be performed because of the possibility of damage to
the emergency load (existing primary feed pump ~and con-
densate pump) during synchronization.
It is also very
unlikely that this system would ever be operated as
described in this regulatory position because of the
short time duration requirements of the emergency
Joad.
Regulatory Position C.2.7:
Demonstrate ability to switch fuel supply systems,
a)
This position is not applicable to this installation.
The design does not include alternate fuel systems.
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Regulatory Position C.2.8:
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Demonstrate that capability to supply emergency load is
not impaired during periodic testing.
a)
Review of circuitry shows that a modification to pro-
vide automatic bypass of the Unit / Parallel and
Isochronous/ Droop control switches would be required
to provide this capability.
The probabil.'.ty of an
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accident coincident with total loss of offsite power
during a one-hour monthly surveillance test is too
small to warrant such a modification.
D.
Surveillance Tests
1.
Manual remote start diesel & bring generator to full load,
monthly
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2.
125 VDC battery inspection, weekly
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3.
Diesel fluids inspection, monthly
E.
Conditions for Operation of Unit #1
1.
Temrorary DG & TR 13 inoperable - continued operation
permitted for 7 days
2.-
Neither A nor B primary feedpump in standby - same as E-1
3.
Temporary DG inoperable - priority repair
4.
TR 13 inoperable - priority repair
5.
"A" condensate pump not in standby - priority repair
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