ML18153B792
| ML18153B792 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 06/22/1989 |
| From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 88-788D, IEB-88-010, IEB-88-10, NUDOCS 8906300085 | |
| Download: ML18153B792 (11) | |
Text
'.
e VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 June 22, 1989 U. S. Nuclear Regulatory Commission Attn:
Document Control Desk Washington, D. C.
20555 Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY SORRY POWER STATION UNITS I AND 2 SUPPLEMENTAL RESPONSE TO NRC BULLETIN NO. 88-10 NONCONFORMING MOLDED CASE CIRCUIT BREAKERS Serial No.
SPS/GDM:pmk Docket Nos.
Licensee Nos.
88-7880 50-280 50-281 DPR-32 DPR-37 As discussed in our previous response to the subject bulletin (Letter No.
88-788B, dated April 3, 1989, we have completed additional actions to ensure that only qualified molded case circuit breakers (MCCBs) can be used in safety related applications.
We have taken these actions to ensure a conservative approach was used to disposition the stock and installed MCCBs.
In preparing this supplemental response, we considered the recent discussions between the NRG Staff and the Nuclear Management and Resources Council regarding future guidance in addressing ongoing NRG Bulletin 88-10 activities.
Our revised response is prcivided in the enclosure.
The information contained herein is true and accurate to the best of my knowledge.
If you require additional information, please contact us.
Very truly yours, j?sp--
L. Stewart nior Vice President - Power Enclosure cc:
U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, N.W.
Suite 2900 Atlanta, GA 30323 Mr. W. E. Holland NRG Senior Resident Inspector Surry Power Station
~ 906300085 890622 QDR AD0CK 05000280 PNU
. --- ---.---* -./
COMMONWEAL TH OF VIRGINIA )
)
COUN1Y OF HENRICO
)
The foregoing document was acknowledged before me, in and for the County and Commonwealth aforesaid, today by J. L. Wilson who is Assistant Vice President -
Nuclear, of Virginia Electric and Power Company.
He is duly authorized to execute and file the foregoing document in behalf of that Company, and the statements in the document are true to the best of his knowledge and belief.
Acknowledged before me this ;JJ, day of 9/,1<.<
, 19 3'1.
My Commission Expires:,Jub1,.ua,'tJ :).S, 19-*._.
Ii?*
- V x
__ _(jjcb--4J_~
Notary Public (SEAL)
I i
e Enclosure RESPONSE TO NRCB 88-10 AND SUPPLEMENT 1 Action Requested la)
Identify all molded-case CBs purchased prior to August I, 1988 that are being maintained as stored spares for safety-related (Class IE) applications or co11111ercial grade CBs that are being maintained as stored spares for future use in safety-related applications; this includes CBs purchased from a CBM or from any other source.
Response
The MCCBs being maintained as stored spares for use in safety-related applications have been identified and are listed in Table 1.
A review of stock items was also performed for MCCBs that may have been provided in electrical panels or motor control centers.
No additional MCCBs were identified as a result of this effort.
Action Requested lb)
Verify the traceability of these MCCBs.
Response
The trac~ability of the MCCBs maintained in stock has been reevaluated.
Although correspondence obtained from both intermediate suppliers and circuit breaker manufacturers provided a MCCB procurement chain, actual procurement/
shipping records were not available for review in most instances.
Commercial suppliers stated that they often purchase breakers in bulk to use as their in-house stock; consequently, individual breakers purchased from the suppliers are drawn from their stock and are generally not directly traceable to the CBM through shipping records. Therefore, to be conservative, we consider the MCCBs identified in Table 1 as non-traceable.
Action Requested le Identify the number, manufacturer, model number, and to the extent possible, the procurement chain for all those CBs identified in (la) that cannot be traced to the CBM.
Response
This information is provided in Table 1.
Action Requested 2)
All holders of operating licenses.who identify installed CBs per item I above or item 4 below that cannot be traced to a CBM are requested to prepare, within 30 days of the completion of each item, an analysis justifying continued operation until items 1 through_ 5 of the actions requested in this bulletin have been completed.
e
Response
The installed nontraceable MCCBs have been identified and are currently being tested per the bulletin requirements.
The testing of the Unit 1 MCCBs is complete with no breaker failures.
Five Unit 2 MCCBs have been satisfactorily tested as well, with the remainder to be tested prior to Unit 2 startup. A justification for continued operation is not required.
Action Requested 3)
All addressees who identify 80 percent or more CBs traceable to the CBM per item 1 above are requested to test the CBs that are not traceable to the CBM in accordance with the test program described in Attachment 1.
Any installed CBs that fail any of these tests should be replaced with *CBs that meet the criteria of item 7 of the actions requested or CBs that pass all tests in accordance with the testing program described in Attachment 1.
If more than 10 percent of the CBs tested fail any of the tests described in Attachment 1, continue with item 4; otherwise, proceed to item 6 of the actions requested.
Holders of operating licenses are requested to complete this testing program before startup from the first refueling outage beginning after March 1, 1989.
Response
As discussed in Action lb above, the MCCBs maintained in stock for use in safety-related applications have been conservatively considered as nontraceable.
Controls have been implemented to prohibit issue of a MCCB for plant installation until the breaker is tested in accordance with the bulletin testing requirements. A station procedure has been implemented to perform the testing.
General testing or replacement of the MCCBs in stock to eliminate the administrative controls will be accomplished in accordance.with the established schedule *provided in the bulletin.
Action Requested 4)
All addressees who identify less than 80 percent of the CBs traceable to the CBM per item 1 above or who identify a failure rate of more than 10 percent for the CBs tested per item 3 above are requested to perform the following actions:
a)
Identify all molded-case CBs that have been purchased between August 1, 1983 and August 1, 1988, and installed in safety-related applications as replacements or installed during modifications.
Response
The MCCBs installed in safety-related systems between August 1, 1983 and August 1, 1988 have been identified and are provided in Table 2.
b)
Verify the traceability of these MCCBs.
Response
See Table 2.
c)
Identify the number, manufacturer, model
- number, system in which they are/were installed, and to the extent possible, the procurement chain for all those CDs identified in (4a) that cannot be traced to the CBM.
~--1
e
Response
See Table 2.
Action Requested 5)
All addressees who identify installed CBs that cannot be traced to the CBM per item 4 above are requested to replace these CBs with components that meet the criteria of item 7 of the actions requested or to test them in accordance with the program described in Attachment 1; CBs that fail any of these tests should be replaced with CBs that meet the criteria of item 7 of the actions requested or CBs that pass all tests in accordance with the test program described in. Holders of operating licenses are requested to replace or to test at least one-half, or all if the total number is less than 75, of these installed CBs before startup from the first refueling outage beginning after March 1, 1989.
The remaining CBs should be replaced or tested before startup from the second refueling outage beginning after March 1, 1989.
Response
The MCCBs identified in Table 2 are currently being tested.
The testing of the Unit 1 MCCBs is complete with no breaker failures.
Five Unit 2 MCCBs have been satisfactorily tested as well, with the remainder to be tested prior to Unit 2 startup.
Action Requested 6)
Information generated while perfonning the actions requested in items 1, 2, 3, 4 and 5 above should be documented and maintained for a period of 5 years after the completion of all requested actions.
Response
The information collected to satisfy actions 1-5 above will be maintained on site in an auditable fashion for a minimum of 5 years.
Action Requested 7)
With the exception of actions taken in response to items 3 and 5 of the actions requested above, molded-case CBs installed in safety-related applications after August 1, 1988 should be:
- a. Manufactured by and procured from a CBM under a 10 CFR 50, Appendix B,
program; or
- b.
Procured from a CBM or others with verifiable traceability to the CBM, in compliance with applicable industry standards, and upgraded to safety-related by the licensee or others using an acceptable dedication program.
e e
Response
The documents used to procure safety-related MCCBs have been revised to require traceability of the MCCBs to a CBM.
In addition, MCCB purchase orders (POs) issued since August 1, 1988 were reviewed. Outstanding POs were amended to require traceability to a CBM.
Two MCCBs were received after August 1, 1988, but prior to implementation of the new traceability requirements.
These two breakers have been removed from stock.
The existing non-traceable MCCBs in stock as of August 1, 1988 that successfully pass the bulletin testing requirements will be considered acceptable for use in safety-related applications.
MCCBs procured after August 1, 1988 from a commercial supplier and traceable to a CBM will be tested prior to installation until the process is replaced by an enhanced dedication program.
A procurement engineering group has been established to review each purchase requisition to provide assurance that the appropriate traceability, testing and/or dedication requirements have been imposed.
An enhanced dedication program for upgrading commercial grade equipment for safety-related applications is presently under development.
Table 1 NON-TRACEABLE SAFETY-RELATED MCCBS MAINTAINED IN STOCK AS SPARES Item*
No.
Manufacturer Model No.
Probable Procurement Chain
- 1.
12 Square D QOB150 Electrical Suppliers, Inc. from Stock/Square D
- 2.
4 Square D QOB260 Unknown
- 3.
2 Square D A1B130 ECK Supply Co.
- 4.
9 Square D A1B20AMP Electrical Suppliers, Inc. from Square D
- 5.
2 Square D AlB260 ECK Supply Co. from Square D
- 6.
4 Square D A1B50AMP
. ECK Supply Co. from Square D
- 7.
7 Square D QOB130AMP Foster Electric from Square D
- 8.
1 Square D QOB120 Electrical Suppliers, Inc. from Stock/Square D
- 9.
4 Westinghouse EB3060 Electrical Suppliers, Inc. from East Coast Panel board e from Westinghouse
- 10.
6 Westinghouse EBH3070 Westinghouse Electric Supply Co. {WESCO) from Westinghouse
- 11.
9 Westinghouse FB3015 Electrical Suppliers, Inc. from East Coast Panelboard from Westinghouse
- 12.
9 Westinghouse FB3020 WESCO from Westinghouse
- 13.
9 Westinghouse FB3030 WESCO from Westinghouse
- 14.
3 Westinghouse FB3040 WESCO from Westinghouse
- 15.
3 Westinghouse FB3040L WESCO from Westinghouse
Item No.
Manufacturer Model No.
Probable Procurement Chain
- 16.
6 Westinghouse FB3050 Westinghouse
- 17.
4 Westinghouse FB3070 WESCO from Westinghouse
- 18.
6 Westinghouse JA3175W WESCO from Westinghouse
- 19.
1 Westinghouse JA3125W Jarrett Electric
- 20.
1 Westinghouse JA3225W WESCO from Westinghouse
- 21.
4 Westinghouse FB3100 Electrical Suppliers, Inc. from East Coast Panel board or Westinghouse
- 22.
13 ITE Q130 Peebles from ITE Electrical Products
- 23.
2 Heinemann 000222001 Gammametrics from POCO Sales from Heinemann
- 24.
1 Westinghouse KA3225 Electrical Equipment co. from Westinghouse
- 25.
1 Westinghouse 2341D87H27 Westinghouse TOTAL NUMBER:
123
. i
Table 2 INSTALLED NON-TRACEABLE/TRACEABLE MCCBS Item No.
Manufacturer Model No.
Installed Location Probable Procurement Chain
- 1.
16 Square D QlB2100VH Vital Bus Panels' Electrical Suppliers, Inc.
Feeder Breakers from Square D (VBI-1,lA; 1-4)
(VBII-1,lA; 1-4)
- 2.
2 Westinghouse EHB2020 EOG Control Panel (DC lA CKTll)
Electrical Suppliers, Inc.
(DC 2A CKT6)
- 3.
2 Westinghouse HFB3070 Alternate Power Supply Electrical Suppliers, Inc.
for Semi-Vital Bus (lHl-1211; 2Hl-1211}
- 4.
1 Westinghouse FB3015 Charging Pump Electrical Suppliers, Inc.
Suction Line MOV from Electrical Panelboard or e (01-CH-MOV-1286A)
- 5.
2 Square D AIB120 Semi-Vital Bus Panel (16)-ECK Supply Co. from Square D (2SVB1-CKT-16, 26)
(26)-Electrical Suppliers, Inc.
from Stock/Square D
- 6.
1 Westinghouse FB301.5 RX Side Fuel Assembly El ectri ca 1 Suppliers, Inc. from Upender Cabinet (02-FH-BKR-NA)
Electrical Panelboard or Westinghouse
- 7.
1 Westinghouse FB3015 Heat Trace Panel #5 Electrical Suppliers, Inc. from (01-CH-HTT-CKT-2)
Electrical Panelboard or Westinghouse
- 8.
1 Square D QOB120 Heat Trace Panel 2A2 El ectri ca 1 Supp_l i ers, Inc. from (Ol-CH-HTT-CKT-36)
Stock/Square D
Item No.
Manufacturer Model No.
Installed Location Probable Procurement Chain
- 9.
1 Westinghouse FB3040 Emergency Switchgear WESCO from Westinghouse Room Ventilation Equip.
(02-EP-BKR-1248)
- 10.
2 Westinghouse KA3225 Control Room Ventilation Electrical Equipment Co. from Chillers (Ol-VS-E-48,C)
- 11.
1 Westinghouse EHB3070A Pressurizer Heater WESCO from Westinghouse e
(02-RC-BKR-44)
- 12.
1 Square D AIB215 Main Steam Trip Valve Electrical Suppliers, Inc.
(DC Panel 2-1-CKT-8) from Stock/Square D (02-EPD-PNL-2-1-8)
- 13.
1 Square D AIB220 (DC Panel 1-2-CKT-B)
ECK Supply, Co. from Square D (Ol-EPD-BKR-PN-1-2)
- 14.
1 Westinghouse JA3150W Control Rod Drive WESCO from Westinghouse Mechanism Shroud Cool-ing Fan (1-VS-F-60C)
- 15.
1 Square D QOB120 Heat Trace Panel 2Al Electrical Suppliers, Inc.
(01-CH-HTT-2A154) from Stock/Square D e
- 16.
1 Square D QOB120 Heat Trace Panel 283 Electrical Suppliers, Inc.
(02-CH-HTT-283-03) from Stock/Square D
- 17.
1 Square D QOB120 Heat Trace Panel 281 Unknown (01-CH-HTT-281-16)
(1)
- 18.
6 Westinghouse Five Star Motor Control Center w/
Public Service of Indiana 480V MCC (6) 20 Amp Breakers from Westinghouse (6) HFB 20A (DCP 88-33}
Notes:
- Traceable
- Installed after 8/88
Item No.
Manufacturer
- 19.
- 20.
3 Westinghouse 9
Westinghouse 15 Westinghouse 6
- 21.
1 Westinghouse Total: Non-Traceable - 20 Traceable
- 60 TOTAL NUMBER:
Note:
- Traceable 80 Model No.
Installed Location Probable Procurement Chain FD3150L EDG Excitation BKR Spectrum Technologies from (EWR 88-578)
Westinghouse HFB2100 DC Panels 1A/2A Systems Control from HFB2050 Westinghouse HFB2030 HFB2020 JD3200 Alternate Power Supply Spectrum Technologies from to 1-VS-E-48 Westingho~se