ML19339B751
| ML19339B751 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 08/14/1980 |
| From: | Goodwin C PORTLAND GENERAL ELECTRIC CO. |
| To: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| Shared Package | |
| ML19339B750 | List: |
| References | |
| IEB-80-15, NUDOCS 8011100011 | |
| Download: ML19339B751 (3) | |
Text
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Portfarxi General Electric Ccmpatr/
... b, IszE Ceares Grce.O 4s t an: vce 5 es te-z August 14, 1980
, Trojan Nuclear Plant Docket 50-344 License h7F-1 Mr'. R. H. Engelken, Director U. S. Nuclear Regulatory Co==1ssion Region V Suite 202, Walnut Creek Plaza 1990 N. California Blvd.
Walnut Creek, CA 94596
Dear Sir:
Attached is Portland General Electric Co=pany's response to IE Bulle-tin 80-15, dated June 18, 1950, involving possible loss of the Emergency Notification Syste= (125) with loss of offsite power.
There were 12 =anheurs expended in conducting the review and preparation of the report required by this Bulletin.
Sincerely,
%)
C. Goodwin, Jr.
Assistant Vice President Ther=al Plant Operation and Maintenance CG/RQR/4sa5A2 Attach =ent c:
Mr. Lynn Frank, Director i
State of Oregon j
Depart =ent of Energy 4
Director Office of Inspection and Enforce =ent U. S Nuclear Regulatory Commission 01110oofp 121 Sw Sunen Sree:, Accane. O'egon 972G4 N
ATTACHMENT Trojan Nuclear Plant Response to IE Bulletin 80-15 Item 1 k'ithin 10 days of the date of this Bulletin, verify by direct inspection, in confunction with the appropriate telephone company representative, that the ENS at your facility is powered in the manner described in the two enclosures.
Resnonse A visual inspection was conducted by a Trojan e=ployee and an appropiate Pacific Northwest Bell (local telephone co=pany) representative within 10 days of the date of IE Bulletin 80-15.
It was determined the station package is powered from the telephone company.
Itec 2 Those facilities which have station packages requiring on-site power, but which are not connected to a safeguards instrumentation bus which is backed up by batteries and an inverter or equally reliable power supply, shall make necessary =adifications and provide such a connection.
Response
Item 2 is not applicable to Troj an.
Refer to Ice: 1 response.
Ite= 3 All facilities are to develop and conduct a test, within 60 days of the issuance of this Bulletin, to verify that all extensions of the ENS located at your facility (ies) would recain fully operable from the facility (ies) to the NRC Operations Center in the event of a loss of offsite power to your facility (ies). This is not intended to =ean that an actual loss of offsite power be executed.
Response
Since the ENS station package is powered from the telephone co:pany, it is believed a test as described in Item 3 is not necessary.
Pacific Northwest Bell was contacted, and the following infor=ation, concerning their maintenance and testing procedures, was obtained.
a.
The telephone company's accrgency power supplies consist of a set of batteries and a D. '. diesel generator.
b.
The batteries are inspected and operationally tested weekly to
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ensure proper perfor=ance in the event of a loss of all electrical power.
c.
The diesel generator which supplies the batteries, is operat ionally tested conthly to ensure proper performance in the event of loss of all electrical power.
In light of this information, it is believed the telephone company's emergency power supply is reliable and adequate enough to maintain power to the ENS.
Iteq_4 If it is determined that a station package requiring on-site power is not connected to a safeguards instrumentation bus backed up by
, auto =atic transfer to batteries and an inverter or an equally reliable power supply, notify the NRC Operations Center via the ENS within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after such determination.
Response
This itcs is not applicable to Trojan. Refer to Item 1 response.
Ire - 5 Prepare and issue an ad=inistrative procedure or directive which requires notification to the NRC Operations Center by commerical telephone or relayed message within one hour of the time that one or more extensions of the ENS located at your f acility(ies) is subsequently found to be inoperable for any reason.
Response
An existing administrative procedure concerning reportable occurances will be revised by August 22, 1980, to include notifying the NRC Operations Center within one hour of determining any part of the ENS is inoperable.
Item 6 Provide a written report, within 75 days of the issuance of this Bulletir, describing the result of the reviews required by items 1 and 2 above, the results of the testing required by item 3 and the procedures required by item 5.
Response
This report is provided pursuant to Ite 6.
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