ML23241A002
| ML23241A002 | |
| Person / Time | |
|---|---|
| Site: | Perry, Harris, North Anna, Turkey Point  |
| Issue date: | 08/25/2023 |
| From: | Knott R Paragon Energy Solutions |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| P21-08032023-FN, Rev. 0 | |
| Download: ML23241A002 (1) | |
Text
Date: 8/25/2023 To: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555 Fax Number (301) 816-5151 10CFR Part 21 Final Notification: P21-08032023-FN, Rev. 0
Subject:
Defect with Eaton/Cutler Hammer Size 4 and 5 Freedom Series Contactors Modified by Paragon with Special Coils and/or with RTV to Improve the Securing of Shading Coils Pursuant to §10CFR 21.21 (d)(3)(ii), Paragon Energy Solutions, LLC is providing this final notification of a potential defect with Eaton/Cutler Hammer Size 4 and 5 Freedom Series Contactors that have been modified to include either a special coil and/or to improve the securing of shading coils. These contactors may have been supplied integral to a motor control center (MCC) cubicle or as spare parts. This condition, if left uncorrected, could potentially cause a substantial safety hazard.
The following information is required per §10CFR 21.21 (d) (4).
(i) Name and address of the individual or individuals informing the Commission.
Richard Knott, Vice President Quality Assurance Paragon Energy Solutions, LLC 7410 Pebble Drive Ft. Worth, TX 76118 (ii) Identification of the facility, activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect.
Eaton/Cutler Hammer Size 4 and 5 contactors with base part numbers including:
Size 4:
CN15NN3, AN16NN0 Size 5:
CN15SN3, AN16SN0 These effected full part numbers will have the Prefix of NLI and suffixes including MOD, M, Paragon Energy Solutions 7410 Pebble Drive
- Fort Worth, Texas
- 76118 817-284-0077
- Fax 817-590-0484
or MOD-M. See attached list.
(iii) Identification of the firm constructing or supplying the basic component which fails to comply or contains a defect.
Components were originally supplied by:
Nuclear Logistics, LLC or Paragon Energy Solutions, LLC 7410 Pebble Drive, Fort Worth Texas 76118 (iv) Nature of defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply.
Paragon completed the final evaluation of a failure of a Size 4 Freedom Series contactor (PN:
NLI-CN15NN3A-T16-MOD-M) supplied to Perry Nuclear Power Plant. The reported failure occurred 26 days following installation into its associated MCC Cubicle. Perry identified the screws holding the contact bar to the push bars had fallen out and were laying in the bottom of the molded base. This allowed the movable contact bar to sit on the stationary contacts and significantly degrade due to arcing and then fail in the energized position. This condition could prevent the contactor from performing its safety function to either energize or de-energize the attached load.
The loose hardware is most likely a workmanship error since the contactor must be disassembled to complete the special coil and RTV modifications to the shading coils. In the fully re-assembled condition, inspection of this hardware for tightness is not possible.
(v) The date on which the information of such defect or failure to comply was obtained.
8/1/2023 (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.
See attached list for items previously supplied.
P21-08032023-FN, Rev. 0
(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.
- 1. Paragon Electrical Engineering revised the test inspection procedure directing the modification of these contactors to install special coils and improve the shading coil retention to specify appropriate inspection steps to ensure hardware tightness during contactor reassembly. COMPLETE
- 2. All projects containing these items currently being worked at Paragon have been identified, and appropriate inspections have been completed or assembly travelers have been updated to ensure the latest procedure issued per action 1 above is used for modification.
COMPLETE
- 3. Paragon Vice President of Engineering has restricted use of test inspection procedures issued prior to 8/2/2023 until a formal review is completed that verifies appropriate technical content and inspection steps are specified. Should these reviews find issues, the document will either be retired, and a new procedure issued, or the document may be revised to include the required instructions. COMPLETE
- 4. Paragon Electrical Engineering has issued a Technical Bulletin (TB-Starter-2023-01 Rev 0) which provides detailed instructions for clients included in the attached listing to utilize to inspect for the noted condition. COMPLETE (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.
This is the first operational failure in this manner reported to Paragon. Paragon considers this condition is most likely not present in units that have been installed and operating for significant periods of time. It is likely routine surveillance or preventive maintenance activities would have identified this condition. Paragon recommends affected licensees, listed in the attached table, perform the steps contained in Technical Bulletin TB-Starter-2023-01 Rev 0 to verify this condition is not present as part of their next routine maintenance outage associated with the affected in use equipment, and at the earliest opportunity for stock spares.
P21-08032023-FN, Rev. 0
Any questions or concerns related to this issue can be directed to me at the contact information below.
Sincerely, Richard Knott Vice President Quality Assurance Paragon Energy Solutions LLC 817-284-0077 rknott@paragones.com cc: Douglas VanTassell - CEO Daniel Dale - COO P21-08032023-FN, Rev. 0
Plant Name Customer PO Number Part Number Serial Number(s)
Energy Harbor - Perry Nuclear 45671097 NLI-CN15NN3A-T16- 012739-02-00001 thru -
Power Plant MOD-M 00005 Energy Harbor - Perry Nuclear 45677159 NLI-CN15NN3A-T16- 016168-01-00001 thru -
Power Plant MOD-M 00004 Energy Harbor - Perry Nuclear 45655916 NLI-CN15NN3A-T16- 003630-01-00001 thru -
Power Plant MOD-M 00005 003630-02-00002 and -
00003 Energy Harbor - Perry Nuclear 45655916 NLI-CN15NN3A-T16- 006077-01-00002 Power Plant MOD-M Dominion Energy - North 4500639059 NLI-CN15NN3A-MOD-M 002427-01-00001 thru -
Anna 00004 Dominion Energy - North 4500597117 NLI-CN15NN3A-MOD-M 108645-02-00001 thru -
Anna 00004 Dominion Energy - North 70370116 NLI-CN15NN3A-MOD-M 108720-02-00001 thru -
Anna 00003 Energy Harbor - Perry Nuclear 45536394 NLI-CN15NN3A-T16- 96080-001-00001 thru -
Power Plant MOD-M 00004 FP&L - Turkey Point 2449459 NLI-AN16NN0A-MOD-M 87833K2-01-0002 FP&L - Turkey Point 2439558 NLI-AN16NN0A-MOD-M 014190-01-00001 Duke - Harris 3141335 Line 0002 NLI-AN16NN0A-T16- 010651-02-00001 and -
MOD 00002 Duke - Harris 03137359 Line 0003 NLI-AN16NN0A-T16- 011669-01-00001 MOD Dominion Energy - North 4500502779 NLI-AN16NN0A-MOD-M 100603-01-00001 and -
Anna 00002 FP&L - Turkey Point 2384743 NLI-AN16NN0A-MOD-M 97816-010-00001 FP&L - Turkey Point 2387804 NLI-AN16NN0A-MOD-M 98136-001-00001 Dominion Energy - North 4500357157 NLI-AN16NN0A-MOD-M 84443-003-00001 thru -
Anna 00005 Duke - Harris 3026166 NLI-AN16NN0A-T16- 78083-001-00003 and -
MOD 00004 Duke - Harris 3026166 NLI-AN16NN0A-T16- 78083-001-00001 MOD Duke - Harris 3026166 NLI-AN16NN0A-T16- 84724-001-00001 MOD Dominion Energy - North 4500326973 NLI-AN16NN0A-MOD 80429-002-00001 Anna Dominion Energy - North 70312551 NLI-AN16NN0A-MOD 351020827-ST8-1 Anna FP&L - Turkey Point 2350487 NLI-AN16NN0A-MOD 76176-002-00001 Dominion Energy - North 70381436 NLI-AN16NN0A-MOD-M 005195-04-00007 Anna P21-08032023-FN, Rev. 0
Dominion Energy - North 70381436 NLI-AN16NN0A-MOD-M 005195-04-00001, -
Anna 00003 and -00006 Duke - Harris 3131229 CN15SN3A-T16-MOD 010856-01-00001 Duke - Harris 3155631 NLI-AN16SN0AB-T16- 018463-01-00001 thru -
MOD 00003 Duke - Harris 3138555 NLI-AN16SN0AB-T16- 012541-01-00001 thu -
MOD 00003 P21-08032023-FN, Rev. 0