ML20053A207
| ML20053A207 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 05/19/1982 |
| From: | Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, SBN-277, NUDOCS 8205250080 | |
| Download: ML20053A207 (4) | |
Text
c PUBLIC SERVICE sum STATION Engineering Office:
Companyof New Hampshire 1671 Worcester Road Framingham, Massachusetts 01701 (6171 - 872 - 8100 May 19,1982 SBN-277 T.F. Q 2.2.2 United States Nuclear Regulatory Commission Office of Inspection and Enforcement Region I 631 Park Avenue King of Prussia, PA 19406 Attention:
Of fice of Inspection and Enforcement Re f e re nce s :
(a)
Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b)
Telecon of 4/21/82 between J. Wiggins (NRC) and J. DeVincentis (YAEC)
Subject:
10 CFR 50.55(e) Reportable Item; Could Supplied-Motor Control Starters
Dear Sir:
On April 21, 1982, we reported a deficiency associated with motor control starters supplied by Gould, Inc. [ Reference (b)]. These motor control starters may experience binding or seizure of the contact carrier assembly (which would preclude motor start) if the space between the contact carrier post and support housing is less than 10 mils (0.010 inches). This deficiency applies to NEMA size 1 and 2 Could unitized starters manufactured between May 11, 1981 and March 11, 1982. Could had previously reported this deficiency to Region I on March 12, 1982, as a 10 CFR 21 item.
Could unitized starters are utilized for safety and non-safety functions in the Seabrook design. The failure of a safety-related drive motor to start when required would prevent the driven equipment from performing its safety function.
We have attached a listing of motor control center starters with possible binding contact carriers for Class IE and non-Class IE starters.
By the end of June, 1982, Gould will provide supervision for Seabrook's electrical contractor to check and modify (if required) each of the starters on the attached listing. Gould will supply retrofit kits to accomplish the required modifications. The check point will be between the contact carrier post and the support housing with a 10 mil (0.010 inch) feeler gauge.
If the feeler gauge does not " bottom out" f reely, the contact carrier will be replaced.
8205250080 820519 pyl PDR ADOCK 05000443 S
PDR l.
r --
United States Nuclear Regulatory Commission May 19, 1982 Attention: Office of Inspection and Enforcement Page 2 Future recurrence of this problem will be prevented as follows:
Contact carrier P/N 408417 will be manufactured to the correct dimensions.
Contact carrier P/N 408415 will be manufactured with captive spacers.
Very truly yours, YNNKEE A_ TOM C ELECTRIC COMPANY r/.
~~&
John DeVincentis Project Manager JDV: dad Attachment
r ATTACIMENT SHEET 1 0F 2 CLASS 1E MCC STARTERS WITH POSSIBLE BINDING CONTACT CARRIER
- TEM MCC NO.
UE&C NODE NO.
1.
1-EDE-MCC-514 CRS, CR6, CR7, CT9, CR4, 2 EA. SIZE 1 SPARE & 1 EA SIZE 2 SPARE.
2.
1-EDE-MCC-614 CRO, CS1, CS2, CR9, 2 EA. SIZE 1 SPARE & 1 EA. SIZE 2 SPARE.
3.
2-EDE-MCC-614 CWS, CW4, CW2, 1 EA. SIZE 1 SPARE & 1 EA. SIZE 2 SPARE.
4 2-EDE-MCC-514 CVO, CW1, CY3, CV8, 2 EA. SIZE 1 SPARE & 1 EA. SIZE 2 SPARE.
I i
l
r ATTACHMENT SHEET 2 0F 2_
NON 1E MCC STARTERS WITH POSSIBLE BINDING CONTACT CARRIER TEM MCC NO.
UE&C NODE NO.
1 1-2D-MCC-242 BU2, BU3, EU4, D80, D79, BU8, BJ6, B3F, B3E, BU6, D77, D76, Bil, 3 EA. SIZE 1 SPARE & 3 EA. bsze 2 SPARE.
2 1-ED-MCC-271 B1U, CU1, CU2, CZ4, DZ3, CT2, CU7, CUS, CT3, CS6, CS7, CS8, CS3, CS4, CSS, CSO, CT1, CS9, CU9, CU0, DZ4, CT,6, CT4, CTS, CVS, CV6, CV7, 5 EA. SIZE 1 SPARE & 2 EA. SIZE 2 SPARE.
3 1-ED-MCC-123 BK6, BK9, BKO, BK7, BK8, & 1 EA. SIZE 1 SPARE.
4 1-ED-MCC-151 BCO, B3A, B97, BH5, BH1, BH4, BG6, B3B, BV2, BH7, BG5, BG8, BG4, BH3, BH2, D19, BV1, BV4, BV3, 2 EA. SIZE 1 SPARE & 3 EA. SIZE i
2 SPARE.
5 1-ED-MCC-273 CWO, CYS, CZ7, CZ5, CX1, CX2, CX6, CYO, DT9, B1V, BlW, CX4, CX5, CY4, CX3, DX9, DX0, CX7, CX8, CW7, CW8, CW9, CX9, 5 EA SIZE 1 SPARE &
1 EA. SIZE 2 SPARE.
l 6
1-ED-MCC-241 BG1, BX9, BF8, BS2, BV8, BF9, 33G, BV6, BV5, BH8, BJ1, BG2, BS1, BZO, BH9, BJ3, BSS, BHO, 7 EA. SIZE 1 SPARF & 2 EA SIZE l
2 SPARE.
7 1-ED-MCC-152 BS7, BUS,.BT4, BT3, BJ5, P.TO, BT2, BT1, BSB, BS9, B67, D81, B05, D78, 3 EA. SIZE 1 SPARE & 1 EA. SIZE 2 SPARE.