GO2-17-086, 10 CFR Part 21 Notification Regarding Size 1 Freedom Series Starters

10 CFR Part 21 Notification Regarding Size 1 Freedom Series Starters

ML17103A545
Person / Time
Site:	Columbia
Issue date:	04/13/2017
From:	Javorik A Energy Northwest
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
52615, GO2-17-086
Download: ML17103A545 (4)

Text

Alex L Javorik ENERGY Columbia Generating Station P.O. Box968, PE04 NORTHWEST Richland, WA 99352-0968 Ph. 509.377.8555 IF. 509.3n.4150 aljavorik@energy-northwest.com April 13, 2017 G02-17-086 10 CFR 21 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001

Subject:

COLUMBIA GENERATING STATION, DOCKET NO. 50-397 10 CFR 21 NOTIFICATION

Dear Sir or Madam:

Transmitted herewith is 10 CFR Part 21 Notification for Columbia Generating Station.

This report is submitted pursuant to 10 CFR 21.21 (d)(3)(ii). This information was initially reported to the NRC Operations Center on March 16, 2017 (Event Notification #52615).

The attachment to this letter provides the information required by 10 CFR 21.21 (d)(4).

There are no commitments being made to the NRC by this letter. If you have any questions or require additional information, please contact Ms. D.M. Wolfgramm, Regulatory Compliance Supervisor, at (509) 377-4792.

Executed on this /2ftt day of 4/fi / , 2017.

Respectfully, A. L. Jav

• Vice President, Engineering

Attachment:

10 CFR Part 21 Notification cc: NRC Region IV Administrator NRC NRR Project Manager NRC Senior Resident lnspector/988C CD Sonoda- BPA/1399 WA Horin - Winston & Strawn

G02-17-086 Attachment Page 1of3 10 CFR Part 21 Notification AZZ/NLI Supplied Buckets DL0-42-7 AA6D and DL0-42-7 AA48 (i) Name and address of the individual or individuals informing the Commission.

Alex Javorik Vice President of Engineering Columbia Generating Station Energy Northwest PO Box 968 Richland, WA 99352 (ii) Identification of the facility, the activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect.

Facility:

Columbia Generating Station PO Box 968 Richland, WA 99352 Manufacturer:

AZZ Nuclear I NU 741 O Pebble Drive Fort Worth, TX 76118 Component: Size 1 Freedom Series Starters Part Type: Motor Control Center Cubicle (Bucket)

Defective P/N: 057018COIL-1 /2, 057018COIL-3, 057018COIL-5 (iii) Identification of the firm constructing the facility or supplying the basic component which fails to comply or contains a defect.

AZZ Nuclear I NU 7410 Pebble Drive Fort Worth, TX 76118 1

G02-17-086 Attachment Page 2 of 3 (iv) Nature of the defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply.

Columbia Generating Station's (Columbia) procurement specification required that the Alternating Current (AC) contactor coils be capable of withstanding continuous operation with 528 volts applied to the primary of the Control Power Transformer (CPT). The specification reads: "AC contactor coils shall be capable of withstanding continuous operation with 528 volts applied to the primary of the control power transformer." NLI supplied a starter design that included a secondary coil with a maximum voltage rating of 132 VAC. The CPT, with a primary coil voltage of 528 VAC, supplied voltage in excess of 132 VAC to the secondary coil. Therefore, the supplied coil's limitation of a maximum voltage rating of 132 VAC constitutes a Deviation from the specification.

The excess voltage supplied to the secondary coil results in coil overheating, with the contactors failing to close resulting in an open circuit. Therefore, the contactor is not able to supply power to the load. This is a safety function of the contactor when used to supply power to a safety related load. In accordance with 10 CFR Part 21 reporting of defects, a loss of any safety function of a basic component is a major reduction in the degree of protection and, therefore, a Substantial Safety Hazard. This deviation, were it to remain uncorrected, would constitute a common mode failure to all continuously energized safety related loads that are supplied power from NLI AC buckets during normal or accident conditions, and that contain this type of contactors/starters.

Therefore, the conclusion is that the deviation is a Defect reportable in accordance with 10 CFR Part 21.

(v) The date on which the information of such defect or failure to comply was obtained.

The potential deviation was entered into Columbia's Corrective Action Program (CAP) on January 30, 2017.

The assessment for Part 21 was completed on March 14, 2017, and determined that the reported deviation constituted a defect in accordance with regulatory definitions.

2

G02-17-086 Attachment Page 3 of 3 An officer of the company was notified of the defect and Part 21 reporting requirement on March 14, 2017.

Notification to the NRC of the defect was completed on March 16, 2017 by Event Notification #52615, by the manager of Regulatory Affairs as delegated by the Vice President of Engineering.

(vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for, being supplied for, or may be supplied for, manufactured, or being manufactured for one or more facilities or activities subject to the regulations in this part.

A review of the part numbers found 148 coils installed, 38 coils in stores activities, and 8 coils on order. Eleven of the installed coils were identified as being installed in continuously energized safety related applications.

(vii) The corrective action which has been, is being, or will be taken; the name of the individual or organization responsible for the action; and the length of time that has been or will be taken to complete the action.

Of the eleven motor starter coils identified for replacement, ten have already been replaced with the same make and model of coil. The remaining starter will be replaced by Columbia Generating Station during the next refueling outage (May-June 2017). The continuously operated coils are on a one year replacement plan until a permanent solution can be developed.

(viii) Any advice related to the defect or failure to comply about the facility, activity, or basic component that has been, is being, or will be given to purchasers or licensees.

Recommend that licensees fully understand procurement specifications provided to the manufacturer, and verify that the manufacturer met the specification through testing.

(ix) In the case of an early site permit, the entities to whom an early site permit was transferred.

Not Applicable 3