Part 21 Report - 1998-031
ACCESSION #: 9712290023
Illinois Power Company
Clinton Power Station
P.O. Box 678
Clinton, IL 61727
Tel 217 936-5623
ILLINOIS Fax 217 936-4932
POWER
John G. Cook
An Illinova Company Senior Vice President
U-602892
2C.220
4F.140
December 23, 1997
Docket No. 50-461 10CFR50.73
10CFR21.211
Document Control Desk
Nuclear Regulatory Commission
Washington, D.C. 20555
Subject: Clinton Power Station - Unit 1
Licensee Event Report No. 97-028-00
and 10CFR Part 21 Report No. 21-97-056
Dear Madam or Sir:
Enclosed is Licensee Event Report (LER) No. 97-028-00 and 10CFR,
Part 21 Report No. 21-97-056: Failure of ABB to Supply Properly Qualified
Components Results in Inoperability of All Thirty-Three In-Service 480-
Volt K-Line Safety-Related Circuit Breakers. This report is being
submitted in accordance with the requirements of 10CFR50.73 and
10CFR21.21.
This Licensee Event Report contains the following commitments:
o Illinois Power will either replace or repair the affected components
in the inservice ABB safety-related 480-volt K-Line circuit breakers
with properly qualified components or evaluate that the currently
installed power shield trip units on ABB safety-related 480-volt K-
Line circuit breakers are acceptable for the expected environmental
conditions.
o Illinois Power will obtain and review a list of 10 CFR Part 21
notifications for circuit breakers and relays from ABB to determine
if Illinois Power was notified of applicable 10 CFR Part 21
notifications.
Sincerely yours,
J. G. Cook
Senior Vice President
U-602863
MRS/krk
Enclosure
cc: NRC Clinton Licensing Project Manager
NRC Resident Office, V-690
Regional Administrator, Region III, USNRC
CPS Branch Chief, Region III, USNRC
Illinois Department of Nuclear Safety
INPO Records Center
POWER REACTOR EVENT NUMBER: 33450
FACILITY: CLINTON REGION: 3 NOTIFICATION DATE: 12/23/97
UNIT: [1] [ ] [ ] STATE: IL NOTIFICATION TIME: 20:04 [ET]
RX TYPE: [1] GE-6 EVENT: 12/23/97
EVENT TIME: 20:04[CST]
NRC NOTIFIED BY: K. S. FRANTZ LAST UPDATE DATE: 12/23/97
HQ OPS OFFICER: JOHN MacKINNON
NOTIFICATIONS
EMERGENCY CLASS: NOT APPLICABLE
10 CFR SECTION: G. WRIGHT RDO
CCCC 21.21 UNSPECIFIED PARAGRAPH
VERN HODGE NRR
UNIT SCRAM CODE RX CRIT INIT PWR INIT RX MODE CURR PWR CURR RX
MODE
1 N N 0 COLD SHUTDOWN 0 COLD SHUTDOWN
EVENT TEXT
LICENSEE SENT IN A LICENSEE EVENT REPORT (LER NO. 97-028-00) WITH A PART
21 IN ITS BODY AND THE LICENSEE WANTED THE PART 21 PORTION OF THE LER
REPORTED.
ON NOVEMBER 26, 1997, ILLINOIS POWER DETERMINED THAT ABB FAILED TO
NOTIFY
ILLINOIS POWER OF A PROBLEM WITH THE QUALIFICATION OF POWER SHIELD
TRIP
UNITS SUPPLIED WITH ABB 480-VOLT K-LINE CIRCUIT BREAKERS. THIS ISSUE
WAS
DETERMINED TO BE POTENTIALLY REPORTABLE UNDER 10 CFR PART 21.
ILLINOIS
POWER HAS COMPLETED EVALUATION OF THIS ISSUE AND CONCLUDES THAT IT
IS
REPORTABLE UNDER THE PROVISIONS OF 10 CFR PART 21.
ILLINOIS POWER IS PROVIDING THE FOLLOWING INFORMATION IN ACCORDANCE
WITH
10 CFR PART 21.21 (c)(4). INITIAL NOTIFICATION OF THIS MATTER WILL BE
PROVIDED BY FACSIMILE OF THIS LETTER TO THE NRC OPERATIONS CENTER IN
ACCORDANCE WITH 10 CFR PART 21.21 (c)(3) WITHIN 2 DAYS OF THE DATE THE
RESPONSIBLE OFFICER APPROVES THIS REPORT.
(i) JOHN G. COOK, SENIOR VICE PRESIDENT OF ILLINOIS POWER COMPANY,
CLINTON POWER STATION HIGHWAY 54, 6 MILES EAST, CLINTON, ILLINOIS, 61727,
IS INFORMING THE NRC OF A CONDITION REPORTABLE UNDER THE PROVISIONS
OF
10
CFR PART 21 BY MEANS OF THIS REPORT.
(ii) THE BASIC COMPONENT INVOLVED IN THIS REPORT IS THE QUALIFICATION
OF
THE POWER SHIELD TRIP UNITS ASSOCIATED WITH ABB 480-VOLT K-LINE
SAFETY-
RELATED CIRCUIT BREAKERS.
(iii) THE POWER SHIELD TRIP UNITS ASSOCIATED WITH ABB 480-VOLT K-LINE
SAFETY RELATED CIRCUIT BREAKERS WERE SUPPLIED BY ABB.
(Continued on next page)
FACILITY: CLINTON PAGE # 2 OF EVENT NUMBER: 33450
(iv) AS DISCUSSED IN THE DESCRIPTION OF EVENT PORTION OF THIS REPORT THE
NATURE OF THE CONDITION IS THE FAILURE TO NOTIFY ILLINOIS POWER OF THE
PROBLEM WITH THE QUALIFICATION OF THE POWER SHIELD TRIP UNITS
ASSOCIATED
WITH ABB 480-VOLT K-LINE SAFETY-RELATED CIRCUIT BREAKERS.
AS DISCUSSED IN THE ANALYSIS OF EVENT PORTION OF THIS REPORT, FAILURE
OF
THE POWER SHIELD TRIP UNITS ASSOCIATED WITH ABB 480-VOLT K-LINE
SAFETY-RELATED CIRCUIT BREAKERS COULD CAUSE THE CIRCUIT BREAKERS
TO
NOT
PROPERLY PERFORM THEIR SAFETY FUNCTION.
(v) ON NOVEMBER 26, 1997, ILLINOIS POWER IDENTIFIED THAT THEY WERE NOT
NOTIFIED OF THE PROBLEM WITH QUALIFICATION OF THE POWER SHIELD TRIP
UNITS
ASSOCIATED WITH ABB 480-VOLT K-LINE SAFETY-RELATED CIRCUIT BREAKERS
AND
ILLINOIS POWER DETERMINED THAT THIS ISSUE WAS POTENTIALLY
REPORTABLE
UNDER 10 CFR PART 21.
(vi) THIS ISSUE AFFECTS THE POWER SHIELD TRIP UNITS ASSOCIATED WITH ABB
480-VOLT K-LINE SAFETY-RELATED CIRCUIT BREAKERS. ILLINOIS POWER IS
AWARE
THAT A 10 CFR PART 21 NOTIFICATION WAS MADE BY ADD TO THE NRC ON JULY
28,
1994, ON THIS ISSUE. HOWEVER, ILLINOIS POWER WAS NOT NOTIFIED BY ABB OF
THIS ISSUE.
(vii) THE CORRECTIVE ACTION THAT ILLINOIS POWER IS TAKING FOR THIS EVENT
IS DISCUSSED IN THE CORRECTIVE ACTION PORTION OF THIS REPORTS (SEE LER
REPORT SENT BY CLINTON).
(viii) ILLINOIS POWER HAS NO ADDITIONAL INFORMATION TO OFFER.
CLINTON POWER STATION MADE AN EVENT NOTIFICATION TO THE NRC
OPERATION
CENTER CONCERNING THIS ISSUE ON 11/26/97 AT 1436 EST AND THE ITS
ASSIGNED
EVENT NUMBER IS 33317.
*** END OF DOCUMENT ***
ACCESSION #: 9712290027
LICENSEE EVENT REPORT (LER)
FACILITY NAME: Clinton Power Station PAGE: 1 OF 4
DOCKET NUMBER: 05000461
TITLE: Failure of ABB to Supply Properly Qualified Components
Results In Inoperability of All In-Service Thirty-Three
480-Volt K-Line Safety Related Circuit Breakers
EVENT DATE: 11/26/97 LER #: 97-028-00 REPORT DATE: 12/23/97
OTHER FACILITIES INVOLVED: DOCKET NO: 05000
OPERATING MODE: 4 POWER LEVEL: 000
THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR
SECTION:
50.73(a)(2)(vii), OTHER
LICENSEE CONTACT FOR THIS LER:
NAME: Mark Wagner, Engineer, Nuclear TELEPHONE: (217) 935-8881,
Station Engineering Department Extension 4071
COMPONENT FAILURE DESCRIPTION:
CAUSE: SYSTEM: COMPONENT: MANUFACTURER:
REPORTABLE NPRDS:
SUPPLEMENTAL REPORT EXPECTED: NO
ABSTRACT:
On November 26, 1997, the plant was in Mode 4 (Cold Shutdown) for the
sixth refueling outage (RF-6). Engineering identified that the
environmental qualification of the power shield trip units associated
with all thirty-three inservice ABB 480-volt K-Line safety-related
circuit breakers ware not sufficient to withstand the expected dose rates
following a worst case lost of coolant accident. The cause of this event
is that ABB can no longer assure Illinois Power that the power shield
trip units associated with ABB-480-volt K-Line safety-related circuit
breakers are qualified for the expected post lose of coolant accident
radiation dose. Also, Illinois Power was not notified by ABB when they
made the 10 CFR Part 21 notification of this condition. The corrective
action for this event includes, either replace or repair the affected
components in the inservice ABB 480-volt K-Line safety related circuit
breakers with properly qualified components or evaluate that the
installed power shield trip units on ABB 480-volt K-Line safety-related
circuit breakers are acceptable for the expected environmental
conditions, obtain and review a list of 10 CFR Part 21 notifications for
ABB circuit breakers and relays to determine if Illinois Power was
notified of applicable 10 CFR Part 21 notifications.
END OF ABSTRACT
TEXT PAGE 2 OF 4
DESCRIPTION OF EVENT
On November 26, 1997, the plant was in Mode 4 (Cold Shutdown) for the
sixth refueling outage (RF-6), reactor (RCT) coolant temperature was
being maintained within a band or 100 to 120 degrees Fahrenheit and
pressure was atmospheric. Engineers were reviewing information such as
technical bulletins and 10 CFR Part 21 notifications that they had
requested from ABB to determine applicability to the ABB 480-volt K-Line
circuit breakers [52] installed at Clinton Power Station (CPS). This
review was being conducted to ensure that ABB vendor information had been
properly addressed at the station. Included in this review was a 10 CFR
Part 21 report issued by ABB on July 28, 1994. The July 26, 1994, 10 CFR
Part 21 listed several products supplied by ABB to nuclear power plants.
These products were not qualified to sustain the radiation levels
previously described in the qualification reports supplied to the
purchasers by ABB. Review of this notification and discussions with ABB
revealed that the power shield trip unit, used on thirty-three inservice
ABB 480-volt K-Line safety-related circuit breakers at Clinton Power
Station, were affected by this notification. Illinois Power was not
included in the attachment to the 10 CFR Part 21 notification that listed
the affected utilities and did not receive the notification.
The qualification reports provided for the power shield trip units
documented that they ware environmentally qualified to 1.0 E5 Rads,
Gamma, total dose. The 10 CFR Part 21 notification states that the power
shield trip units are actually only qualified to receive 1.0 E3 Rads,
Gamma, total dose. The power shield trip units, used in all
safety-related ABB 480-volt K-Line circuit breakers, are required to be
environmentally qualified to receive 1.0 E5 to 1.0 E4 Rads, Gamma, total
dose. These radiation dose values are associated with the radiation dose
received by the component following a postulated worst case loss of
coolant accident. A calculation was performed to determine what the
radiation dose the power shield trip units would be subjected to under
the most severe accident during the current operating mode (Mode 4). The
results of the calculation disclosed that the power shield trip unit
radiation dose would not exceed the 1.0, E3 Rads, Gamma, total dose
qualification of the installed power shield trip units. Therefore, these
devices are operable while the plant is shutdown.
No automatic or manually initiated safety system responses were necessary
to place the plant in a safe and stable condition. This event was not
affected by other inoperable equipment or components.
CAUSE OF THIS EVENT
ABB can no longer provide assurance that the power shield trip units
supplied by ABB with their 480-volt K-Line safety-related circuit
breakers meet the radiation dose requirements specified in the purchase
specification for these components.
TEXT PAGE 3 OF 4
CORRECTIVE ACTION
Illinois Power will either replace or repair the affected Power shield
trip units in the inservice, ABB 480-volt K-Line safety-related circuit
breaker's to obtain properly qualified power shield trip units or
evaluate that the currently installed power shield trip units on
safety-related 480-volt K-Line circuit breakers are acceptable for the
expected environmental conditions. Operations entered a Mode restraint
to not enter Mode 2 (Startup) until this issue in resolved. Also,
Illinois Power will obtain and review a list of 10 CFR Part 21
notifications for circuit breakers and relays from ABB to determine if
Illinois Power was notified of other applicable 10 CFR Part 21
notifications.
ANALYSIS OF EVENT
This event is reportable under the provisions of 10CFR50.73 (a)(2)(vii)
as a condition where a single cause or condition could have caused two
independent trains to become inoperable in a single system designed to
remove residual heat, mitigate the consequences of an accident, or shut
down the reactor and maintain it in a safe shutdown condition.
This event is potentially nuclear safety significant. The affected
components are installed on all inservice ABB 480-volt K-Line
safety-related circuit breakers at CPS. In the event of an accident the
power shield trip units could fail due to excessive radiation exposure.
This could prohibit 480-volt supplied equipment from operating or
tripping when required.
The power shield trip units for the ABB 480-volt K-Line safety-related
circuit breakers have not been qualified since the equipment was
initially put into service during plant construction.
ADDITIONAL INFORMATION
No equipment or components failed during this event.
Illinois Power has not reported in recent history an event involving
circuit breaker components or relays being installed without proper
environmental qualification.
For further information on this event contact Mark Wagner, Engineer,
Nuclear Station Engineering Department, at (217) 935-8881, extension
4071.
10CFR Part 21 Report 21-47-056
On November 16, 1997, Illinois Power determined that ABB failed to notify
Illinois Power of a problem with the qualification of power shield trip
units supplied with ABB 480-volt K-Line circuit breakers. This issue was
determined to ha potentially reportable under 10 CFR Part 21. Illinois
Power has completed evaluation of this issue and concludes that it is
reportable under the provisions of 10 CPR Part 21.
TEXT PAGE 4 OF 4
Illinois Power is providing the following information in accordance with
10 CFR Part 21.21(c)(4). Initial notification of this matter will be
provided by facsimile of this letter to the NRC Operations Center in
accordance with 10 CFR Part 21.21 (c)(3) within 2 days of the date the
responsible officer approve this report.
(i) John G. Cook, Senior Vice President of Illinois Power Company,
Clinton Power Station, Highway 54, 6 miles East, Clinton,
Illinois, 61727, is informing the NRC of a condition reportable
under the provisions of 10 CFR Part 21 by means of this report.
(ii) The basic component involved in this report is the
qualification of the power shield trip units associated with
ABB 480-volt K-Line safety-related circuit breakers.
(iii) The power shield trip units associated with ABB 480-volt K-Line
safety-related circuit breakers were supplied by AM
(iv) As discussed in the DESCRIPTION OF EVENT portion of this report
the nature of the condition is the failure to notify Illinois
Power of the problem with the qualification of the power shield
trip units associated with ABB 480-volt K-Line safety-related
circuit breakers.
As discussed in the ANALYSIS OF EVENT portion of this report,
failure of the power shield trip units associated with ABB
480-volt K-Line safety-related circuit breakers could cause the
circuit breakers to not properly perform their safety function.
(v) On November 26, 1997, Illinois Power identified that they were
not notified of the problem with qualification of the power
shield trip units associated with ABB 480-volt K-Line
safety-related circuit breakers and Illinois Power determined
that this issue was potentially reportable under 10 CFR Part
21.
(vi) This issue affects the power shield trip units associated with
ABB 480-volt K-Line safety-related circuit breakers. Illinois
Power is aware that a 10 CFR Part 21 notification was made by
ABB to the NRC on July 28, 1994, on this issue. However
Illinois Power was not notified by ABB of this issue.
(vii) The corrective action that Illinois Power is taking for this
event is discussed in the CORRECTIVE ACTION portion of this
report.
(viii) Illinois Power has no additional information to offer.
*** END OF DOCUMENT ***
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