ML20023C621
| ML20023C621 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 05/06/1983 |
| From: | Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, 22178, 82-10-3, NUDOCS 8305170489 | |
| Download: ML20023C621 (12) | |
Text
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Colisumers power Jernes W Cook Vice President - Projects, Engineering and Construction General offices: 1945 West Parnell Road, Jackson, MI 49201 * (517) 788-0453 May 6, 1983 82-10 #3 Mr J G Keppler, Regional Administrator US Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, IL 60137 MIDLAND NUCLEAR C0 GENERATION PLANT -
DOCKET NOS 50-329 AND 50-330 UNDERRATED MOTOR CONTROL CENTER CONTROL CIRCUIT TRANSFORMERS FILE:
0.4.9.66 SERIAL: 22178
Reference:
J W Cook letter to J G Keppler, Same
Subject:
Serial 19088, dated November 10, 1982 Serial 20679, dated January 28, 1983 The referenced letters were interim 50.55(e) reports concerning deficiencies in underrated control circuit transformers supplied by Gould-Brown Boveri for the 460 volt motor control centers. This letter is our final report on this subject.
The enclosure to this letter provides an analysis of the deficiency and the corrective actions that were taken with regard to this matter.
WRB/cd
Enclosure:
MCAR-61, Final Report, dated April 15, 1983.
CC: Document Control Desk, NRC Washington, DC RJCook, NRC Resident Inspector Midland Nuclear Plant 8305170489 830506 PDR ADOCK 05000329 S
PDR MAY 9 P3 OC0483-0017A-MP01
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I S; rial #22178 2
82-10 #3 CC: CBechhoefer, ASLB Panel FPCowan,-ASLB Panel JHarbour, ASLB Panel AS&L Appeal-Panel MMCherry, Esq MSinclair BStamiris CRStephens, USNRC WDPaton, Esq, USNRC FJKelley, Esq, Attorney General SHFreeman, Esq, Asst Attorney General WKMarshall GJMerritt, Esq, TNK&J INPO Records Center 4
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OC0483-0017A-MP01
1 Bechtel Power Corporation Ii2067 777 East Eisenhower Parkway Ann Arbor, Michigan u,, Address: P.O. Box 1000. Ann Arbor, Michigan 48106 April 15, 1983 BLC-16531 Consumers Power Company 1945 Parnall Road i
Jackson, Michigan 492G]
Attention: Mr. J.W. Cook Vice President Projects, Engineering and Construction
Subject:
Midland Plant L' nits 1 nad 2 Ccesuntrs Power Company Bechtel Job 7120 MCAR 61 - fit'AL REPGET The Final Report for MCAR 61, Undere.11ed Star.ter Transforuers in ITE-Could Suppliad MCCs, is attached for your icformation and use.
Very truly yours,
[ John A.
ers Project Manager JAR /DNR/ mad
Attachment:
MCAR 61 - Final Report cc:
R.C. Bauman Ke ey
)
B.W. Marguglio p~~
3, R.A. Wells (all w/a)
R 191983 (UAUTY ASSUllA!!CE Written Response Requested:
No
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Bechtel Associates Professional Corporation Ii1906 li2067 unnagement Corrective Action Report (MCAR)
SUBJECT:
MCAR 61 (Issued 10/13/82)
FINAL REPORT DATE:
April 15, 1983 PROJECT:
Consumers Power Company Midland Plant Units 1 and 2 Bechtel Job 7220 Introduction This report provides fdnal status and the course of corrective action required pursuaat to MCAR 61.
I rescription of Deficiency 50 VI Seventy-three Size 1 starte.s here been identified as having(Q),
control power transfomers (':PF s).
Specification 7220-E-7
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Appendix A, Section 2 3 requires e.11 CPT's to be one size larger than standard with a mirimum size of 100 VA.
Gould Drawings (Bechtel Vendor Print 7220-E7-11, 12, 13, 19, 20, 25, 26, 27, 28, 29, and 30) also indicate that the.se CPT'e are 100 VA.
Summary of Investigation and Histo.-ical Back round 6
This deficiency was discovered during field modifications of the Class 1E motor control centers (MCC's) and was documented in Bechtel NCR 4509 and Consumers Power Company NCR M-01-9-3-010.
Analysis of Safety Implications An investigation was conducted to determine the effect of using 50 VA CPT's in Size 1 starters assuming minimum utilization voltage on the MCC bus. The results indicate that a voltage potentially below the limits for proper operation of the MCC starter coils could result. If this minimumdesign voltage (414 volts) condition were to occur, Class 1E equipment necessary to safely operate the plant may fail to operate.
Probable Cause Gould has stated that the 50 VA CPT's were inadvertently supplied -
(reference letter from Brown-Boveri Electric, Inc. dated 12/22/82, Com 99297). Bechtel supplier quality has stated that during the final inspection process the supplier quality representative misinterpreted the specification requirements and inadvertently released the equipment for shipment.
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Bechtel Associates Professional Corporation lil906 li2067 MCAR 61 i
Final Report Page 2 Corrective Action The corrective actions to resolve this MCAR are as follows:
1.
The following steps were taken to cause replacement of the undersized CFT's:
a) The vendor has been contacted and has agreed to furnish replacements for all undersized CPT's.
b) The first partial shipment is scheduled for April 22, 1983, with the balance of shipment scheduled for May 27, 1983 Bechtel field precurement is following up on this action
- item, c) Bechtel construction will follow-up on the installation of the replacement CPT's as they are received from the vendor and Q-activitieri resume. The forecast completion date for completion of installstion of these transformers is liecember 31, 1983 d) NCR 450$' sud t!-01-9-3-010 sere iscued to identify these discrepant CPT's and vill be used to track the installation of thest: items.
2.
All the etartars listed on Attachments 1 and 2 have been icapectt;d. Attachment 3 lists all locations where incorrectly aited transformers were found.
3 Gould has stated that they have made all affected personnel aware that they should check all documentation before supplying spare parts on existing projects. Bechtel has revised the hold points for Purchase Order 7220-E-7(Q) to include verification of the control power transformer rating.
4 Bechtel project supplier quality has made all affected supplier quality personnel aware of this deficiency and has revised the inspection criteria to assure compliance to the specification requirements.
Reportability Based on the safety implications this deficiency is considered reportable in accordance with Title 10 of the code of Federal Regulation Part 50 55(e).
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Bechtel Associates Professional Corporation lilS06 Ii2067 MCAR 61 Final Report Page 3 Submitted by:
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In J.G. Kovaelt Electrical Group Supervisor i
Approved by:
[M k 2
/E.M. Hughes f
Project Engineer Concurrence by:
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.L.~ Ca.stleberry F
Electrical Ch' f Concurrence by:
E.H. Smith "
Engineering Manager Concurrence by:
g M.A. Dietrich J
Project Quality Assurance I:ngineer JGK/SB/se(E) 4/4/3(S) i Attachments:
1.
Location of All Class 1E Size 1 Starters Supplied by Gould 2.
Location of All Class 1E Size 2 and Larger Starters Supplied by Gould 3
Location of Starters with Incorrectly Sized Transformers i
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Bechtel Associates Professional Corporation i iI906 is..weo,1 Page 1 of 3 LOCATION OF ALL CLASS 1E SIZE 1 STARTERS SUPPLIED BY GOULD (CPTs SIZE 100VA)
MOTOR CONTROL CENTERS:
MCC CUBICLE LOCATION 1B23 20, 2D, 2E, 3B, 3D, 4A, 4B, 4D, 4E, 6B, 60, 6D, 7B, 70, 7D, 8A, 8B, 8D, 8E, 9A, 9B, 9D, 9E, 10A, 10B, 10C, 10E 1B24 20, 2D, 2E, 3B, 3D, 4A, 4B, 6B, 60, 6D, 7B, 70, 7D, 8A, 8B, 80, 8D, BE, 9A, 9B, 90, 9D, 10A, 10B, 100, 10D, 10E, 110, 11D 1B53 1B, 2A, 3B, 30 1B54 1B*, ID, 1E, 3B 1B55 1D, 1E, 20, 3A, 3B, 30, 3D, 4A, 4B, 40, 4D, 5A, 53, 50, 5D, 6A, 6B, 60, 6D, 7B, 70, 7D, 8A, 8B, 80, 10A, 10B, 100, 10D 1B56 ID, IE, 2A, 2B, 20, 2D, 3A, 3B, 30, 3D, 4A, 4B, 40, 4D, 5B 50, SD, 6A, 60, 6D, 7A, 7B, 70, 7D, 8A, 8B, 8D, 8E, 9A, 9B, 11B, 11C IB43 1D, 30, 3D 1B44 10, 1D, IE, 2A, 2B, 3A, 3B, 30 1B63 2C' 1B64 20*
IB89 1E, 20, 2D, 2E 1B90 1E, 20, 2D, 2E l
2B23 20, 2E, 2E, 3B, 3D, 4B, 4D, 4E, 4A, 6B, 60, 6D, 7B*, 70, 7D, 8A, 8B, 80, 8D, BE, 9A, 9B, 9D, 9E, 10A, 10B, 10C*
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f Bechtel Associates Professional Corporation Iil906 Ii2067 ist.ca.ent 1 P.ge 2 of 3 2B24 20, 2D, 2E, 3B, 3D, 4A, 4B, 4E*, 6B, 60, 6D, 7B*,
70, 7D*, 8&, BB, 80, 8D, 8E, 9A, 9B, 90, 9D, 10A, 10B, 100*, 10D, 10E, 11B*, 110, 11D 1B53 1B*, 1D, 1E, 20 2B54 1B*, 10, 2A, 20, 2D, 3B, 30 2B55 1D, 1E, 2B*, 20, 2D, 3A, 3B, 30, 3D, 4A, 4B*, 40, 4D*, SA, 5B, 50, SD, 6A, 60*, 6D*, 7B, 70, BA, 8B, 8D*, 9D, 10B, 10E 2B56 1D, 1E, 2A, 2B*, 20, 2D*, 3A, 3B, 30*, 3D, 4A, 4B*, 40, 4D, 5B, SC', SD, 6A, 60*, 6D*, 7A*, 7B, 70, 7D, BA, BD, BE, 9A, 90, 100, 10D, 10E, 11D 2E43 10, 1D, 1E, 2A, 2B, 3B, 30 2B4A 10, 1D, 1E, 2A, 2B, 3A., 3E, 30 0345 1D*, 2B, 20, 3A, 3B, 3E, 4A, 4B, 4C', 4D, 5B, 50, SD, 6A, 6B, 60, 7C OB46 1D*, 2D, 20, 3A, 3B, 3E, 4A, 4B, 40*, 4D, 5B, SC, 5D, 6A, CE l
2B63 20*
2B64 20' OB65 1D*
OB66 1D*
OB68 1B*, 1D*, 1E*, 2B*, 2C' OB69 1B*, 1D*, 1E*, 2B', 20*
2B89 1E, 20, 2D, 2E 2B90 1E, 20, 2D, 2E l
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r Bechtel Associates Professional Corporation 20B7 III806 Page 3 of 3 Note:
This listing is based on Drawings 7220-E-17(Q),
Rev 18 and 7220-E-18 (Q) Rev 17 LOCAL CONTROL STAT ONS 1NM03856 2NM03956 1NM03893Al 1NM03893A2 INM03893B1 INM03893B2 1NM03868A 1NM03868B 2NM03968A 2NM03968B 2NM03993Al 2NM03993A2 2NM03393B1 2.iM03953B2
- Indicates this equipment is turned over to Consumers Power Company JGK/SB/se(E) 4/4/3(S)
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f Bechtel Associates Professional Corporation Ii1906 Ii20.67 ista w.at 2 Page 1 of 2 LOCATION OF ALL CLASS 1E STARTERS SIZE 2 AND LARGER SUPPLIED BY GOULD MOTOR CONTROL CENTERS:
MCC CUBICLE LOCATION Size 2 Starter (100VA) 1B23 2B, 30, 6A, 7A 1B24 2B, 30, 6A, 7A 1B55 2A, 9E, 10E 1B56 5A, 10D, 11D 1B63 10, 2B 1B64 10, 2B Size 3 Starters (150VA)
IB53 2B, 3A 1B54 2D, 3D 2B53 2A, 3A 2B54 2E, 3D OB45 7D
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'li2067 i i I906 Page 2 of 2 Size 4 Starters (250VA) 1B23 10, 5B 2B24 10, 5B 1B53 2D, 3D 1B54 2A, 30 1B56 9D 1B43 2D 1B44 2D 2B23 30, 5B 2B24 10, 5B 2B53 2D 2B54 3A 2b56 9D 2B43 2D OB45 6L 2B44 2D OB46 6D Note:
1.
This listing is based on Dravitgs 7220-E17(Q), Rev 18 and 7220-E18(Q), Rev 17 2.
There are no Class lE local control stations with Size 2 of larger starters JGK/SB/se(E) 4/4/3(S) 1
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I Bechtel Associates Professional Corporation IiiS06 Ii2067 i,,,,,,,, 3 Page 1 of 1 LOCATION OF STARTERS WITH INCORRECTLY SIZED TRANSFORMERS MCC CUBICLE LOCATION OB45 6B, 6C OB46 6B 1B55 7D, 10A, 10B 1B56 40, 11B, 11C 2B23 60, 9B 2B55 5A, 8B, 10E 2B56 40, 90, 11D 1B43 1D, 30 1B44 1D, 30 2B43 1D 2B44 30 OB65 1D i
~0B68 1D, 1E l
0E69 1D, 1E In addition to those listed above there are 45 spare starters with incorrectly sized transformers located in the warehouse.
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