ML20036A749
| ML20036A749 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 05/06/1993 |
| From: | Pickett D Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9305140120 | |
| Download: ML20036A749 (11) | |
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i May 6, 1993 f
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Docket No. 50-461 LICENSEE:
Illinois Power Company (IP)
FACILITY: Clinton Power Station
SUBJECT:
MEETING
SUMMARY
OF APRIL 27, 1993 On April 27, 1993, representatives of IP met with members of the NRC staff at the NRC headquarters in Rockville, Maryland, to discuss resolution of out-of-use range application of AMP 34138 parallel splices at the Clinton Power Station. A list of attendees :nd handouts used at the meeting are enclosed (Enclosures 1 and 2, respectively).
The licensee discussed the installation of the AMP splices and the subsequent finding that certain splices had oversized lugs and the wrong crimping tool l
had been used.
The licensee showed samples of splices, demonstrated how lug sizes are determined, and discussed their findings that the non-conforming splices are adequate for the remaining life of the facility.
Most of the-information presented was similar to that included in the licensee's letter of March 4, 1991.
l The staff questioned the licensee's basis for determining that the splices are acceptable.
In addition, the staff had que;tions regarding the environmental qualification of the Raychem sleeving and 1 > licensee's response to NRC 1
Information Notice 86-053 on the same subjec;.
The licensee agreed to supply j
additional information to answer the staff's remaining questions.
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The staff indicated that it was providing technical assistance to the Region
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III office and that ultimate resolution of the issue would be handled by the i
Region.
j Original signed by:
Douglas V. Pickett, Senior Project Manager Project Directorate 111-2 Division of Reactor-Projects III/IV/V-i Office of Nuclear Reactor Regulation
Enclosures:
As stated l
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Clinton Power Station Unit No. 1 cc:
Mr. J. S. Perry Illinois Department Vice President of Nuclear Safety Clinton Power Station Office of Nuclear Facility Safety Post Office Box 678 1035 Outer Park Drive Clinton, Illinois 61727 Springfield, Illinois 62704 Mr. J. A. Miller Mr. Donald Schopfer Manager Nuclear Station Project Manager Engineering Department Sargent & Lundy Engineers Clinton Power Station 55 East Monroe Street Post Office Box 678 Chicago, Illinois 60603 Clinton, Illinois 61727 Mr. Frank A. Spangenberg Sheldon Zabel, Esquire Manager - Licensing and Safety Schiff, Hardin & Waite Clinton Power Station f
7200 Sears Tower Post Office Box 678 233 Wacker Drive Mail Code V920 Chicago, Illinois 60606 Clinton, Illinois 61727 Resident Inspector U.S. Nuclear Regulatory Commission i
RR#3, Box 229 A Clinton, Illinois 61727 Ms. K. K. Berry Licensing Services Manager i
General Electric Company 175 Curtner Avenue, M/C 382 San Jose, California 95125 Regional-Administrator, Region III
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799 Roosevelt Road, Building 4 Glen Ellyn, Illinois 60137 Chairman of DeWitt County
.c/o County Clerk's Office DeWitt County Courthouse Clinton, Illinois 61727 Mr. Robert Neumann Office of Public Counsel State of Illinois Center 100 W. Randolph, Suite 11-300 Chicago, Illinois 60601 l
ENCLOSURE 1 APRIL 27. 1993 MEETING ATTENDEES NRC Illinois Power George Hubbard Dick Phares Paul Shemanski Randy Langley Jeff Jacobson Joe Sipek Jim Dyer Mark McMenamin Dave Lynch Timothy Byam Doug Pickett Anne Dummer Jim Lasevnick Tony Gody, Jr.
Vonna Ordaz John Zwolinski
J ENCLOSURE 2 e
e NRC/IP MEETING
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UNRESOLVED ITEM 90024-01
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April 27,1993
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Illinois Power Representatives:
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R. F. Phares
"~ wr Licensing
- 1. R. Langley
- v. rector De:ign & Analysis Engineering J. V. Sipeh Supervisor - Regional Regulatory Interface A
M. G. McMenamin Supervising Engineer Elecincal D&A Engineering l
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IL.L.1 I,.1 MEETING AGENDA
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Background / History
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Problem Description I1
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Illinois Power Analysis and Response to the Unresolved Item i
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Electrical vs Environmental Qualification I:
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ILLINSIS
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POWER I
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'j BACKGROUND / HISTORY 4
.I 3/89 NRC reviewed documentation and identified EQ problems with electrical equipment j
4/89 During review of the issue IP identified additional unqualified terminations and splices
,j 5/89 NRC requested IP to provide corrective actions for 13 EQ issues including terminal blocks used in electrical penetrations.
1 IP responded by committing to replace instrumentation circuit terminal blocks with qualified "Raychemed" splices by the end of j
the second refueling outage (RF-2) 1 NRC issued Notice of Violation and civil penalty of $75,000 for 7/89 above EQ deficiencies.
1/90 IP notified the NRC that control circuit terminal blocks were not
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qualified and that these would also be replaced with Raychemed splices prior to the end of RF-2.
I 4/90 PO-3; IP replaced some terminal blocks in circuits with qualified j
splices 10/90-RF-2; IP completed replacement of control and 3/19 instrumentation circuits in electrical penetrations and junction boxes with qualified splices (A total of approximately 5000' splices were installed using AMP splices w/Rahchem insulating material) i 11/90-During RF-2 the NRC reviewed installation of AMP splices in 12/90 electrical penetrations and junction boxes including an identified non conformance regarding the use of oversize splice lugs.
Unresolved item 90024-01 was issued. (Report dated 1/11/91)
.i 3/91 IP responded to unresolved item 90024-01 and addressed issues identified in the inspection report and other questions asked by j
l NRR and Region III personnel.
ILLIN SIS i
POWER I' _
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i PROBLEM DESCRIPTION y
DESCRIPTION OF PROBLEM Oversized AMP parallel splices were used during the conversion of electrical connections from terminal strips to an in-line splice SCOPE OF PROBLEM (Splices designated use-as-is per Condition Report disposition) 51 splices assembled using an AMP #34138 parallel splice (vice an AMP #34137 splice) to connect a #16 AWG stranded wire to a #16 AWG solid wire.
126 splices assembled using an AMP #34318 parallel splice (vice an AMP #34138 splice) to connect two #12 AWG wire in the following configurations I
86 solid to stranded 39 stranded to stranded 1 solid to solid ASSEMBLY DEMONSTRATION ELLENMis POWER-
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{b ILLINOIS POWER ANALYSIS AND RESPONSE TO UNRESOLVED ITEM
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l ANALYSIS OF #16 AWG CONDUCTOR SPLICES g
Circular Mil area comparison Crimping tool used resulted in a high deformation "W" crimp j
Total area of copper inside splice larger than splice area after crimping g
Full compression of conductors is achieved 1
CONCLUSION I
Splices are adequate and will function for the life of the plant.
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ILLIN915
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ILLINOIS POWER ANALYSIS AND RESPONSE TO THE UNRESOLVED ITEM i
1 ANALYSIS OF #12 CONDUCTOR SPLICES Two configurations (stranded to stranded and solid to solid) met underwriters acceptance criteris of 70 pounds pullout force.
Solid to stranded configuration exhibited a pullout force of 60 pounds.
IP evaluated location and function of splices against test results achieved Location r
The splices are located inside enclosures having no internal moving parts and mounted to building walls protected from random external objects.
The penetrations are seismically qualified.
i Thejunction boxes and conduits are seismically mounted The maximum force that could be exerted against the splice is limited to seismic acceleration of the splice assembly.
Electrical Integrity verified using millivoit drop test.
Thermal Effects are bounded by Millivolt drop test results.
Function of the Circuits Indicating light circuits and computer point inputs are at milliamp levels and are not concerns.
Motor operated valve circuits which actuata ILLINSIS contactor coils and solenoid valve circuits have POWER
ILLINOIS POWER ANALYSIS AND RESPONSE (cont.)
Function of the Circuits (cont.)
an inrush current ofless than 2 amps, while the holding current is under.25 amps.
Relay coils involved with these circuits have lower current requirements than contactor coils.
Ilydrogen igniter circuits are subject to an energized value of.9 amps. Estimating the inrush current as 10 times the energized value of.9 amps subjects the splice to 9 amps, a value well within the capabilities of the splice.
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Evaluation of Longevity Environment seal provided by Raychem material ensures no degradation of the splice
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from moisture or corrosion Splices are metallic with no organic materials
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that are subject to age related degradation Size of parallel splice has no impact on the qualification of the Raychem material as long as Raychem is installed with its use range.
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CONCLUSION
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Splices are adequate and will function for the life of the plant.
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ILLINSIS
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POWEtt t
O ELECTRICAL VS ENVIRONMENTAL QUALIFICATION All splices are sealed with Raychem WCSF-N heat shrink tubing.
Splices were within the use-range specified by Raychem Raychem provides an environmentally qualified seal over the splice Review of Raychem Test Reports demonstrate suitability to protect circuits as long as products are used within their specified ranges.
Splices are metallic with no organic materials that are subject to age related degradation Metallic Splice material has no affect on Raychem material based on installation within use range.
ILLINSIS FOW~cR l
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