ML19029A155
| ML19029A155 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley, Dresden, Browns Ferry, Oconee, Nine Mile Point, Point Beach, Watts Bar, Grand Gulf, Arkansas Nuclear, Columbia, Surry, Turkey Point, River Bend, Clinton, FitzPatrick, LaSalle  |
| Issue date: | 12/27/2018 |
| From: | Woolard S Engine Systems |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML19029A155 (7) | |
Text
{{#Wiki_filter:ENGINE SYSTEMS, INC. 175 Freight Road Telephone: 252/977-2720 Rocky Mount, NC* 27804 Fax: 252/446-1134 December 27, 2018 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001
Subject:
- 10CFR21 Reporting of Defect~ and Non-Compliance -
Engine Systems, Inc. Report No. 10CFR21-0123,-Rev. 1 EMD Fuel and Soakback Pumps - Potentially Undertorqued Cover Bolts
Dear Sir:
The:enclosed report addresses a revision to reportable notification on EMO fuel and soakback pumps. A copy of the revised report has be~n mailed to our affected nuclear customers. Please sign below, acknowledging receipt of this report, and return a copy to the attention of Document Control at the _address above (or, fax to number 252/446-1134) within 1O working days after receipt. Yours very truly, ENGINE SYSTEMS, INC. Susan Woofard - Document Control Coordinator Please let us know if ANY of your mailing information changes - name of recipient, name of company/facility, address, etc. Mark the changes on this acknowledgment form and send to us by mail or-FAX to the number above. RECEIVED:---'--------- 93_ DATE: I I Quality Performance With Pride
ENGINE SYSTEMS, INC. 175 Freight Road, Rocky Mount, NC 27804 Telephone: 252/977-2720 Fax: 252/446-1134 Report No. 10CFR21-0123 Rev. 0: 11/30/18 Rev. 1: 12/21/18 10CFR21 REPORTING OF DEFECTS AND NON-COMPLIANCE COMPONENT: EMO Fuel and Soakback Pumps - Potentially Undertorqued Cover Bol,ts SYSTEM: Emergency Diesel Generator CONCLUSION: Reportable i.n Accordance With 10CFR21 Prepared By: -+~--+_,__._.;l...,.AM=.-'---------- - VEngineering Manager Date: /Z /21 /18 Reviewed By: ----""~~.____.._@lt __*__*______
- _ Date: _JJ__)J_l_)_J'J_
Quality Manager Quality Performance With Pride
'I " Report No. 10CFR21-0123 Record of Revisions Page: 1 of 1 REV DATE PAGE DESCRIPTION 1 12/21/18 2 In item (iv), added reference to F4B engine application. In item (vii), revised recommended correction action to include a shaft freeness check and provide guidance for reduced bolt torque for previously installed pumps.
Report No. 10CFR21-0123 Revision: 1 Date: 12/21/18 Page: 1 of 2 Pursuant to 10 CFR 21.21(d)C4). ESI is presenting the required information as follows: (i) Name and address of the individual or individuals informing the Commission. Dan Roberts John Kriesel Quality Manager Engineering Manager Engine Systems Inc. Engine Systems Inc. 175 Freight Rd. 175 Freight Rd. Rocky Mount, NC 27804 Rocky Mount, NC 27804 (ii) Identification of the basic component supplied within the United States which fails to comply or contains a defect. EMO fuel and soakback pumps of the following part numbers: Part Number Description 8410219 Fuel Pump, Flanged Connections 8080284 Fuel Pump, Threaded Connections Lube Oil Scavenging and Fuel Pump Assembly (16, 20-645E4, E48), 8417074 includes PIN 8410219 Lube Oil Scavenging and Fuel Pump Assembly (16, 20-645E4), 8252842 includes PIN 8080284 Lube Oil Scavenging and Fuel Pump Assembly (12-645E4, E48), 8417754 includes PIN 8410219 8447715 Fuel Pump and Motor Assembly, includes PIN 8410219 8455818 Soakback Pump and Motor Assemblv 8460815 Lube Oil Soakback and Fuel Pump (iii) Identification of the firm supplying the basic component which fails to comply or contains a defect. Engine Systems Inc. (ES/) / (iv) Nature of the defect or failure to comply and the safety hazard which is created or could be created by such defect of failure to comply. ES/ was notified by a nuclear customer of two instances where a bolt was found loose or backed out of the cover of an EMO engine driven fuel pump PIN 8410219. Following notification, ES/ inspected remaining pumps in inventory and found instances where one or more the pump cover bolts were loose or lightly torqued. See Figure 1 below for a visual depiction of the pump and bolts. 0 Pump Cover Bolts (qty 6) Figure 1: Exploded View of Pump P/N 8410219
Report No. 10CFR21-0123 Revision: 1 Date: 12/21/18 Page: 2 of 2 EMO fuel pump, PIN 8410219, is commonly used on all 12, 16, and 20-cylinder EMO model 645E4, E48, and F48 engines. The pump is either mechanically driven from the engine (via the scavenging lube oil pump) or motor driven (as in the case of a backup/redundant fuel pump). The pump transfers fuel oil from the day tank to the fuel injectors to support fuel combustion. Without the supply of fuel oil, the diesel engine is unable to produce power which adversely affects the safety-related operation of the emergency diesel generator set. (v) The date on which the information of such defect or failure to com ply was obtained. October 24, 2018 (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. The extent of condition includes pump PIN 8410219 as well as the part numbers listed in Table 1 in Appendix A. Note that PIN 8080284 is otherwise identical to PIN 8410219 except that the ports are threaded as opposed to flanged. The scavenging pump assemblies listed are upper level assemblies that contain either PIN 8410219 or 8080284. The fuel pump and motor assembly utilizes PIN 8410219. The soakback pump assemblies listed use a pump made by the same manufacturer with similar construction and therefore are included in the extent of condition. Based on ES/'s investigation the issue may extend as far back as 2014. Therefore, any of the pumps supplied from 2014 through 2018 are considered suspect. (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. For all affected customers: ES/ recommends inspecting the bolt tightness for all pumps. The recommended bolt torque is 108 to 120 in-lbs (12 to 13 Nm). After verifying bolt torque, a shaft freeness check is recommended. The pump shaft should be capable of being rotated by hand in either.direction. Due to the small shaft size, this check is commonly performed with a small crescent wrench or with the coupling half installed on the shaft. Inability to rotate by hand indicates loss of end clearance and the pump should be returned to ES/ for rework or replacement. Note: For installed pumps where it is not possible to check shaft freeness, ES/ recommends using a reduced bolt torque of 60 to 70 in-lbs (7 to 8 Nm). This is sufficient to ensure the bolts are snug while safeguarding against loss of end clearance that would otherwise go undetected. This activity should be performed at the earliest opportunity; however, it is more important for the inspection to be performed on newly installed pumps. It is expected that for pumps supplied with low bolt torque, if a problem were to develop it would be in the form of a fuel leak soon after installation. For pumps that have been successfully installed for several months or years with no detectable leakage, it is less likely that bolt(s) are loose and therefore the urgency of this inspection is reduced. For ES/: The dedication procedures for these pumps have been revised or are being revised to add a step to verify proper bolt torque. This will be completed prior to any future shipments. In addition, ES/ is in correspondence with the pump manufacturer to implement corrective actions to prevent reoccurrence. (viii) Any advice related to the potential 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. Verification of bolt tightness is non-invasive and may be performed with the pump installed (and operating). The bolts are external to the pump and the cover is stationary; there is no impact to pump operation or functionality while performing this inspection.
'r Report No. 10CFR21-0123
.-1 Revision: 1 Appendix A List of Affected Customers Page: 1 of 2
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Table 1: List of Affected Customers (continued on next page)
Report No. 10CFR21-0123 ,1 Revision: 1 Appendix A List of Affected Customers Page: 2 of2
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---**---~------***- ' **--*----'-*--**I _______ '
Table 1: List of Affected Customers}}