ML20107J973
| ML20107J973 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 07/06/1984 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Schnell D UNION ELECTRIC CO. |
| Shared Package | |
| ML20107J952 | List: |
| References | |
| FOIA-84-671 NUDOCS 8502280099 | |
| Download: ML20107J973 (9) | |
Text
CONFIRMATORY ACTION LETTER e tEC0 UNITED STATES 9
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citN ELLYN. lLUNOIS 60137 Jul. 0 61984 Docket No. 50-483 Union Electric Company ATTN: Mr. Donald F. Schnell Vice President - Nuclear Post Office Box 149 - Mail Code 400 St. Louis, MO 63166 Gentlemen:
This refers to a 10 CFR 50.72 reportable event which occurred at 1510 CDT on July 4, 1984. Control room ventilation and containment purge isolation signals were initiated due to a loss of power to three process radiation monitors.
Further investigation by your staff revealed manually opened, rather than tripped, power supply breakers in the 120V distribution panel which supplies the radiation monitors.
Based on discussions between you and Mr. C. E. Norelius of my staff, it is our understanding that prior to the Plant Manager's approval to take the reactor critical, you will:
(1) conduct a thorough investigation of this event to deter-mine the most probable causes; and (2) provide for NRC review and acceptance, the results of your investigation and corrective actions taken to prevent recurrence.
Please let us know immediately if your understanding differs from that set forth above.
Sincerely, NO c/d *~~-
fJamesG.Keppler l
Regional Administrator i
cc:
W. H. Weber, Manager, Nuclear Construction l
S. E. Miltenberger, Plant Manager l
R. L. Powers, Assistant Manager l
Quality Assurance l
DMB/ Document Control Desk (RIDS) l Resident Inspector, RIII J. Axelrad, IE l
B. Youngblood, NRR l
J. Hind, RIII Region IV K. Drey i
Chris R. Rogers, P.E.
Utility Division, Missouri Public Service Commission 7
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4 DATE OF EVENT 07/04/84 TIME OF EVENT - 1610 DATE OF NOTIFICATION - 07/04/84 TIME OF NOTIFICATION - 1858 CACILITY NAME - CALLAWAY 1 REGION - 3 o
TYRE Or FACILITY - POWER REACTOR D'
LICENSEE EVENT CLASSIFICATION - 10 CFR 50.72 REPORTAELE EVENT, NON EMEROENCY CATEGORIES OF EVENT - ESF ACTUATION LUSS OF POWER s,
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AT 1610 RECEIVED CONTROL ROOM VENTILATION AND CONTAINMENT PURGE ISOLATION SICI, NALS. FOUND TO BE DUE TO OPEN POWER SUPPLY BREAKERS ON 3 PROCESS MONITORSt AL L FED FROM A SINGLE 120V DIST PANEL. REASON FOR OPEN BREAKERS IS UNKNOWN. THE SE BREAKERS APPEAR TO BE OPENED, NOT TRIPPED. ESFAS RESET, ISOLATION SIGNALS,
CLEARED AND INCREASED SECURITY PATROLS IN ROOM WITH BREAKERS.
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July 4 This refers to a 10 CFR 50.72 reportable event which occurred (LER 84-11) et 1510 CDT on July 4, 1984 Control room ventilation and containment purge isolation signals were initiated due to a loss of power to three process radiation monitors.
Further investigation by your staff revealed manually opened, rather than tripped, power supply breakers in the 120V distribution panel which supplies the radiation monitors.
Based on discussions between you and Mr. C. E. Norelius of my staff, it is our understanding that prior to the Plant Manager's approval to take the reactor critical, you will:
(1) conduct a thorough investigation of this event to deterrine the most probable causes; and (2) provide for NRC review and acceptance, the results of your investigation and corrective actions taken to prevent recurrence.
CAL issued.
July 5 Security Event (LER 84-09)
July 5 Security Event (LER 84-08) 4 10
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g FACILITYS RANCHO SECO REGIONI S DATE OF EVENTI 07/04/84 2
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ENTEEED REPORTI BAILEY TIME OF EVENTI 1229 ET A
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! DESCRIPTION:
CALLED LICENSEE FOR PLANT USI*206F iT225-~#S W!rREACTOR -- -
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. COOLANT SYSTEM. GOING T0' WET LAY UP IN BOTH SG o300oo0.......................................................
r CLASSIFICATI0 % IO CFR 50.72 RtPORTABLE EVENTe NON EMERGENCY N
FACILITYI CALLAWAY I REGION 3 DATE OF EVENT 07/04/84 j%<m M // (,,ff y h, 4 NOTIFIED NRCI R.
LAMB OATE NOTIFIED: 0T/04/84 ENTEIED REPORTI BAILEY TIME OF EVENT 1610 ET x
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ESF ACTUATION-LOSS OF POWE" COUSEI UNMNOWN M
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15ee Los*v-DESCRIPTION AT 1610 RECEIVED CONTROL ROON VENTILATION AND CONTAINMENT PURGE
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ISOLATION SIGNALS. FOUND TO RE DUE TO OPEN power SUPPLY RREAMERS g7 04 3 PROCESS MONITORSI ALL FED FROM A SINGLE 120V DIST PANEL.
p REASON FOR OPEN BREAKERS IS UNMNOWN. THESE BREAMERS APPEAR TO BE g h OPENEDo NOT TRIPPEO. ESFAS RESETe ISOLATION SIGNALS CLEARED AND I ggm N<..o..oo.......... INCREASED SECuRI.TY PATROLS IN R00H WITH BREAKERS.
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CLASSIFICATION:
PHYSICAL SECURITY / SAFEGUARDS FACILITY CALLAWAY I REGIONI-3 ' DATE OF EVENT: 0T/04/R4 NOTIFIED NRC R.
LAMB DATE NOTIFIED: 07/04/R4 gym #
l ENTERED REPORTisBAILEY TIME OF EVENT 8 1948 ET O
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TIME NOTIFIED 2023 ET yw g
CATECCGYI SECURITY-g w M ~~~
MQ CAUSEI ELECTRICAL FAILURE -SECURITY COMPUTER H00/XD0 ACTION REG 3e D. DANIELSON DEscilIPTION LOST SECURITY COMPUTERS FOR 3 SECONDS WHILE BRINGING SLAVE ON.
RASON NOT FULLY UNDERSTOOD. COMPENSATORY MEASURES TAMEN. REACTOR ooooooo...............................................E EVENT.
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BEAVER VALLEY I REGION: I DATE OF EVENTI OT/04/R4
,1 NOTIFIED NRCs M.
WAHLENMAYER DATE NOTIFIED 07/04/R4 ENTERED REPORTS BAILEY TIME OF EVENTI 2238 ET W
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TIME NOTIFIEDI 2249 ET N
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OJ 8/7/84 Page 2 Related Date of LER Date Due Type of Involved LER No.
irs Description incident (s) or (Submitted)
Incident Dept (s)
SECURITY (Cont.)
- 84-023-00 84-0589 Moderate loss of security - loss of 8/4/84 8/9/84 Equipment Security security hardware RADIATION MONITORS 84-003-00 84-0376 Inadvertent ESF actuation through failure 6/15/84 (7/16/84)
Equipment / Operations 84-0513 of radiation element GT-RE-22 by loss of 7/12/84 Procedure power and initiation of Containment Purge Isolation and Control Room Vent Isolation signals 84-004-00 84-0385 Inadvertent ESF actuation apparently caused 6/17/84 (7/16/84)
Personnel I&C (Note 2) by I&C working on radiation element GT-RE-33 initiating CPIS and CRVIS 84-006-00 84-0393 Loss of sample flow and inoperability of 6/18/84 (7/18/84)
Personnel Operations radiation monitor GT-RE-21B between 0803 Health Phys and 1426; violation of Tech Specs 84-006-01 84-0393 Correction of typographical errors in 6/18/84 (7/25/84)
Personnel Operations LER-84-006-00 Health Phys 84-011-00 84-0459 Inadvertent ESF actuation through failure 7/4/84 8/3/84 Personnel Nuclear Opr of radiation elements GK-RE-04, GT-RE-31, and GT-RE-33 by loss of power initiating Containment Purge Isolation signal and Control Room Vent Isolation signal 84-018-00 84-0536 Inadvertent ESF actuation from radiation 7/18/84 8/17/84 Equipment 16C monitors GK-RE-05 and CG-RE-27 (CRVIS and FBVIS)
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m u t e n t, aconrom DONALO P SCMNCLL F o PO7 Odt July 9, 1984 mou.......oo.......
TO:
All Personnel with Unescorted Access to the Callaway Plant I
ACTS OF VANDALISM OR SABOTAGE Receipt of an operating license places a responsibility on each of us that must be fully understood.
Any malicious act of vandalism or sabotage at a nuclear power plant that could jeopar-dize the safety of the general public, plant personnel,or plant safety is a violation of Federal and State laws and will be dealt with in a severe manner by Union Electric Company.
You should be aware that penalties under the law may be extended to individuals who are passively involved (have information but fail to report it) as well as to those who are actively involved in acts of van-dalism or sabotage.
Unauthorized alteration of valve or breaker alignment is so categorized, irrespective of the actual consequences of the alteration.
Such violations can involve penalties of up to S10,000 and 10 years imprisonment.
I would hope that acts of this kind will not occur at Callaway.
However, be advised that Union Electric Company will exercise the necessary resources including the use of plant security forces, as well as local, State and Federal law enforcement agencies in dealing with such acts.
We call upon each of you to' assist us in identifi-cation of any person engaged in unauthorized or suspisious activities which might be considered vandalism or sabotage.
If you witness such an act or have information relevant to known or suspected acts of vandalism or sabotage, you are obliged to repor it to your manage-ment.
I am sure that the vast majority of peopic tt the site.. Int to continue Callaway's reputation as an execptiencl.rlant ca.re com cnet 8
operation.
Through your continuing c cperEtien, c c:n tch.tve this goal.
I ask for your strong support in this natter which is crucial to the well-being of the Callaway Plant.
p Donald F. Schnell*
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