ML20049A074

Fairbanks Morse Part 21 Re Fm Notification Report Serial Number 20-01 Fairbanks Morse

ML20049A074
Person / Time
Site:	Hatch, Peach Bottom
Issue date:	01/31/2020
From:	Kurr M Fairbanks Morse
To:	NRC/NRR/DRO/IOEB
References
Download: ML20049A074 (5)

Text

2020/01/31 15:28:08 1 /5 Address Line 1 Phone: (555) 555-5555 Address Line 2 Fax: (555) 555-5556 City State Zip Web: www.companyweb.com

• Fax Cover Page To: Fax Number: 913018165151 Company: Date: 1/31/20 From: Fax Number:

Company: No. of pages: 5 (including cover page)

Subject:

Message Details:

2020/01/31 15:28:08 2 /5 FM Notification Report Serial Number 20-01 Fairbanks Morse 10CFR 21.21 {d)(3}{ii) Notification Submitted j_anuary 31; 2020 (i) Name and address of the individual or individuals* informing the Commission.

Mr. Martin T. Kurr Quality Assurance Manager Fairbanks Morse

• 701 White Avenue.

Beloit, WI 53511 USA (H) 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:

1) Emergency Diesel Generator Set for Peach Bottom plant at the Exelon storage facility fn Memphis, TN, USA.

1790 Dock Street Memphis, TN 38106

2) Opposed Piston Engine at the Pooled Equipment Inventory Company

• owned by Southern Nuc*1ear / Georgia Power - Plant Hatch *spare

• 1701 Dunn Ave., Building 925C Memphis, TN 38106 Ba.sic component which fails to comply or contains a defect:

Opposed piston dies*e1 engine camshaft thrust lock washer and lock nut assembly.

FM fonn BFS548 Pagel of 4

2020/01/3115:28:08 3 /5 FAIRSANKS MOHSE FM Notification Report Serial Number 20-01 Fairbanks Morse 10CFR 21.21 (d)(3)(ii) Notification Submitted January 31 1 2020

..:**  ;****~**:. '*.

...... *, .-*** .....:,.*.:.:..i

-:" --~), _*.. ** ,,,*'

f .:* ,:, -~

• .. =~: /** ....

H Ip q,J!i

I .il II UIII

'?:nun,.,~ , ............. :.

t** . / . . J (iii) Identification of the firm constru~ting the facility or supplying the basic component which fails* to comply or contains a defect.

Fairbanks Morse 701 White Avenue Beloit, WI 5351'1 USA FM fom1 .BF5548 Page2 of 4

2020/01/3115:28:08 4 /5 FAJRBANKS MORSE FM Notification Report Serial Number 20-01 Fairbanks Morse 10CFR 21.21' (d)(3)(ii) Notification Submitted January 31 1 2020 (iv) Nature of the defect or failure to comply and the safety hazard which is created or could be cr~ated _by such defect or failure to comply.

Nature of defect; Unknown tightness of cam thrust lock nut assembly.

Safety hazard which could be created by such defect:.

. FM assembled and completed a factory acceptance test on a 1000. rpm new opposed piston diesel. engine generator set. Upon post-test '

inspection it was discovered that the lock nut.and lock washer had fallen off of the camshaft The failure did not prevent the. engine from st_arting, accelerating to rated speed as well as accepting and sustaining rated load. The failure does not result in an immediate engine shutdown or load rejection. The timing chain restrains the cam shaft adequately for the engine to perform its emergency funct"ion. However, it cannot be conclud~d that the engine would continue* to operate for the entire durl;ition of its safety function. Out of an abundance of caution, this Part 21 notificati.on is being issued for subject engines with less than 98" hours of operation since the camshaft lock nut assembly was tightened, to This Part 21 notification is being applied only engines with. less then 98 operating hours since the cam lock nut assembly was tightened for the following two reasons:

• There are no known*occ1,1rences of cam *1ock.nut as.sembly failures on any 900 rpm FM Opposed Piston engines. All FM OP engines in service .as emergency diesel generators in the United States are 900 rpm.

• A laboratory analysis of the failed components. conclusively shows thisJailure is an infant mortality. In the event the earn lock nut is loose, the lock washer will fail very quickly upon engine ope.ration.

FM form Bf 5548 Pftge 3 of 4

2020/01/3115:28:08 5 /5 FAHRSANKS* fi,10RSE FM Notification Report Serial Number 20-01 Fairbanks Morse 10CFR 21.21 (d)(3)(ii) Notification Submitted January '31., 2020 (v) The date on which the information of such defect or failure to comply was obtained.

January 30, 2029 (vi) In the case of a basic component which conta.ins a defect or fails to comply, the number*and location of all such components in use at, supplied for, or being supplied for one or more facUities or activities subJect to th.e regulations in this part.

One FM Oppo.sed Piston engine at each of'the.se two facilities:

1) Emergency Diesel Generator .Set for Peach Bottom plant i;;lt the Exelon storage facility in Memphis, TN, USA

• 1790 Dock Street Memphis, TN 38106

2) Opposed Piston Engine at the. Pooled Equfpment Inventory Company owned by Southern Nuclear I Georgia Power - *Plant Hatch spare*

• 1701 Dunn Ave., Building 925C.

Memphis, TN 38106 (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.

• FM has defined the appropriate tighteni.ng value to the cam lock nut assembly in .Service Information Letter SIL.-40 and has* provid.ed this guidance to an licensees that possess FM OP engines. FM has updated all internal *engineerinig specifications arid manufacturing instructions to include the newly specified tightening requirements. *There are no 10 GFR 50 Appendix B t=M OP engines being newly constructed.

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

• Service Information Letter Slla.40 has been provided to all affected p.arties.

FM fonn. Bf5548