ML17194A504
| ML17194A504 | |
| Person / Time | |
|---|---|
| Site: | Dresden, Quad Cities, Dow Chemical Company, LaSalle, 05000000 |
| Issue date: | 02/16/1982 |
| From: | Delgeorge L COMMONWEALTH EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 8203030445 | |
| Download: ML17194A504 (3) | |
Text
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c"-*71\\ -_*ea Commonwea.dison One First National*
a a, Chicago, Illinois
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Address Reply to: Post Office Box 767
. Chicago. Illinois 60690
~-f I February 16, 1982 Mr. James G. Keppler, Regional Administrator Directorate of Inspection and Enforcement - Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137
Subject:
Commonwealth Edison Company Prompt Public Notification Systems Status of Installation and Initial Dresden Station Units 1, 2 and 3; Quad Ci ties Station Units 1-- and 2; Zion Station Uni~d 2
- NRC Docket No~. ~249, 50-254/265 50~373/374-.........
and References (1):
L. O. DelGeorge letter to J. G. Keppler dated January 27, 1982;
Dear Mr. Keppler:
Commonwealth Edison has notified your staff informally that the Prompt Public Notification Systems required by 10 CFR 50.54(s)(2) for the emergency planning zones (EPZ) around Dresden, Quad Cities and Zion Stations were installed and an initial test (see Reference (1)) performed by Februaty 1, 1982.
The purpose of this letter is to document our schedule for remedial action to correct deficiencies identified as a part of the initial testing.
This report addresses only those fixed siren locations that have been added within the subject EPZ's to fulfill the requirements of 10 CFR 50.54(s) (2).
Sirens that have been in use by citi.es.or towns within the EPZ's for civil defense, fire alarms, etc. and which are to be used as part of the prompt notification system were assumed operable because they have already been tested by the local users.
For the fixed-sirens added to compl~_t_e __ tb-e--pubrtc ----
notification systems, all' six_ens--w-e-re-successfully tested locally veri fying_j:_b_e.-ope-rat*tonOT each siren (i.e. local actuation - growl
t-esYr:--As was indicated to Mr. w. Axelson of your staff during the week of February 1, 1981 certain of these siren locations did not indicate an actuation as a part of the integrated system operability tests performed between January 29, and February 1, 198 2.
These ~.
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- failures are judged to be attributable to the radio control portion of the units; that is:
- 1.
Encoder trouble at the remote control location.
- 2.
Signal level at.the output of the encoder or audio input to the base station radio.
- 3.
Signal path resulting in low signal level at the receiver.*
- 4.
Receiver antenna trouble.
- 5.
Receiver trouble.
- 6.
Decoder trouble.
- 7.
Wiring problems from the decoder to the siren controls.
In order to assure future reliable operation of all siren locations, it is our intention to check the radio controls at each siren location whether or not the siren failed on initial test.
Using Whalen Engineering personnel assisted by Commonwealth Edison Company personnel to do the radio checkout, the following is the schedule for the work.
Zion Station 27 locations - Begin 2-15-82, finish 2-23-82.
Quad Cities Station 64 locations - Begin 2-24-82, finish 3-12-82.
Dresden Station 60 locations - Begin 3-15-82, finish 4-2-82.
If it is determined that a revision is necessary to a particular siren location (e.g.:
relocate an antenna), this worl<_ _____________ _
will be initiated as soon as the requirement is_j.Qenti-f-ied-.---n1e revision work will progress concur.r.en-t--w-ith--Ehe overall radio control checkout_and---th-e--rev1sfon will be retested after it is comF>-1 et-e-.----- --
Correction of all deficiencies to the systems will be completed prior to June 1, 1982.
We will advise you periodically before June 1, 1982 of the status of these activities.
We will also attempt to provide any
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- information made available by state and local authorities relative to siren coverage effectiveness tests to be performed later this year, as described in Reference (1).
To the best of my knowledge and belief the statements contained herein are true and correct.
In some respects these statements are not based on my personal knowledge but upon information furnished by other Commonwealth Edison employees.
Such information has been reviewed in accordance with Company practice and I believe it to be reliable.
If you should have any questions on this matter or other related information provided previously please direct them to this office.
Very truly yours,
/~,#.J~
L. O. DelGeorge Director of Nuclear Licensing cc:
NRC Resident Inspector - D/QC/Z 3452N