ML20155A493
| ML20155A493 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 03/19/1986 |
| From: | Zintl W SOUTHERN CALIFORNIA EDISON CO. |
| To: | Temple G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| IEB-79-18, NUDOCS 8604090029 | |
| Download: ML20155A493 (5) | |
Text
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50r Southern California Edison Company SAN ONOFRE NUC LE AR GENER ATING ST A TION P.O. B O K 128 S AN CLEMENT E, C ALIFORNI A 92672 March 19, 1986 h
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1?.;;Q r-Emergency Preparedness Section g~
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1450 Maria Lane, Suite 210 9
Walnut Creek, California 94596-5368 Attention: Ms. Gail Temple, Emergency Preparedness Analyst
Dear Ms. Temple:
Subject:
Docket Nos. 50-206, 50-361 and 50-362 San Onofre Nuclear Generating Station, Units 1, 2 and 3 suring the weeks of January 6-10, 1986, and February 3-7, 1986, you conducted an inspection of the Emergency Preparedness program at the San Onofre Nuclear Generating Site. At the exit interview conducted on February 7, 1986, you requested a time line of event: be submitted, regarding the installation of visual alarms at San @ofre and our estimated dates of completion for outstanding items.
The enclosure provides the requested information.
If you require any additional information, please so advise.
Sincerely, I
4 W. G. Z NTL MANAGER, COMPLIANCE
Enclosures:
As stated F. R. Huey (USNRC Senior Resident Inspector, Units 1, 2 and 3) cc:
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4 ENCLOSURE TIME LINE OF EVENTS SAN ONOFRE EMERGENCY EVACUATION VISUAL SYSTEMS (IE BULLETIN 79-18)
UNIT 1 IE Bulletin 79-18 was issued on August 7, 1979, and required that all power reactor facilities with an operating license:
1.
Determine whether current alarm systems and evacuation announcement systems are clearly audible or visible throughout all pl' ant areas with emphasis on high-noise areas.
Determination in high noise areas must be made with the maximum anticipated noise level.
2.
Determine what corrective action is necessary to assure that areas identified as inaudible areas in (1) above, will receive adequate audible / visual evacuation signals.
In areas where adequate audible / visual evacuation signals cannot be assured by hardware changes, determine what additional administrative measures are necessary to assure personnel evacuation.
On September 21, 1979, SCE completed initial tests of the existing Unit 1 evacuation annunciation system.
The existing system was determined to have i
several inaudible locations. Corrective actions were initiated to (1) improve existing paging systems and (2) install flashing lights in high noise areas (Table 1).
i On July 29, 1981, SCE completed a retest of the evacuation system and confirmed all areas were (1) audible; (2) could be made audible by increases in annunciator /PA volume; or (3) were covered by or required additional flashing lights. On March 3, 1983, further tests were completed.
Based i
upon these tests, Proposed Facility Change 1-82-129 Rev. O and Rev. 1, completed in August 1984 prior to return to service of Unit 1, upgraded all areas to adequately alert plant personnel of an emergency condition.
UNITS 2/3 Upon issuance of IE Bulletin 79-18, SCE directed Bechtel Power Corporation to evaluate appropriate design / hardware modifications to the plant annunciation /PA system then under honstruction at Units 2 and 3.
Since the plants were under construction, although installation surveys were conducted, the emergency evacuation systems did not begin acceptance testing until operating conditions (i.e., routine noise levels) were achieved in i
December 1983. Areas were identified in a December 1983 survey which 4
required increased annunciation /PA volume. The upgrades required to increase the audibility of the Unit 2 and 3 annunciator /PA systems were finalized in May 1985 and are currently scheduled for completion by June 1, 1986.
As shown in Table 2, in Unit 2 inaudible areas flashing lights were installed by March 12, 1985. The Unit 3 flashing light installation will be-completed during the next outage of sufficient duration, but no later than the next Unit 3 refueling outage.
4 ALL UNITS During the period when Unit I was completing the aforementioned upgrades (September 1979 - March 1983) and since initial criticality of Units 2 and 3 (July 1982 present), in accordance with Bulletin 79-18 SCE has implemented an interim program of personnel accountability and re-entry search teams to ensure proper evacuation of personnel.Bulletin 79-18 did not specify a date for completion of upgrades, although it did require the interim program of personnel accountability to continue until completion of the upgrades.
Accordingly, these measures will remain in effect until the Unit 2 and 3 anrunciator/PA and lighting upgrades are completed.
Red Badge Training instructs workers in evacuation procedures upon emergency siren actuation and PA announcements.
Flashing lights were also installed in many areas and, for those flashing lights which are installed outside containment, labels are provided which identify immediate actions required for the individuals observing the lights.
For all areas, Emergency Plan Implementing Procedures require evacuation and accountability upon actuation of the emergericy signal and the emergency evacuation flashing lights.
A Special Emergency Planning Bulletin was issued to all plant personnel in January 1986, to assure personnel were aware of the flashing light system.
Although the installation of the flashing lights is not yet complete, red I
badge emergency plan training is in the process of being revised to incorporate training on these evacuation syitems into the lesson plans.
In May 1985, a requirement to report any inaudible area was added to the Emergency Preparedness drill observation requirements.
Drill evaluators report problems which are corrected on a case-by-case basis.
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