ML19256E856

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Forwards Addl Responses to IE Bulletin 79-15 Re Draft Pumps. Pumps Have Only Been Operated During Factory Shop Tests,Not at Plant Site.All Pumps Met Design Specs
ML19256E856
Person / Time
Site: Fermi DTE Energy icon.png
Issue date: 10/25/1979
From: Hines E
DETROIT EDISON CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
IEB-79-15, NUDOCS 7911150419
Download: ML19256E856 (4)


Text

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TK-Edward Hines AssistdSt VCe Pres @fe!

Ovanty Assurance Detro.ti 3331 W B Eciison am>gBeaweeRoad u-October 25, 1979 EF2-50,633 J

Mr. James G. Keppler Regional Director Directorate of Regulatory Operations Region III U.S. Nuclear Regulatory Comm's3sion 799 Roosevelt Road Glen Ellyn, Illinois 60137

Dear Mr. Keppler:

Detroit Edison's Second Response to IE Bulletin 79-15 On October 1,1979, Mr. Frank Jablonski of NRC Region III telephoned Mr. H. A. Walker, Edison EF2 Site QA Engineer, and indicated that Edison's response to NRC IE Bulletin 79-15 (EF2-45,816 of August 16, 1979) required further clarification. NRC IE Bulletin 79-15 requires that all vertical turbine pumps of the " deep draft" type be addressed.

Detroit Edison has investigated this matter again, and our second response to NRC IE Bulletin 79-15 is contained on the attached Edison memorandum (EF2-46,675 of October 15, 1979 " Additional Information on NRC IE Bulletin 79-15").

If you require additional action by Edison in this matter, please advise us.

Very truly yours, t^rvi A HE/Im Enclosure cc: Of fice of Inspection and Enforcement Division of Reactor Inspection Programs U.S. Nuclear Regulatory Commission Washington D.C. 20555 k\a

$ p. N nc @ 9 E

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RECEIVED Nholt ~00T 241979 Edison ENRICO FERMI UNIT 2 PROJECT ENGINEERING

Octeder 15, 1979
F2 - 46,675 TO
R. W. Barr FROM: W. F. Colbert

SUBJECT:

Additional Information on NRC IE Bulletin 79-15 Attached is Engineering's input for Edison's response to IE Bulletin 79-15 questions. It is noted that this bulletin requests a " package" be made up at the site for these pumps including drawings, design specifications, QA manuals, installation procedures, etc. This infor-mation is available at site document control.

Written by: R. C. Anderson Attachment cc w/ attachment: E. Lusis G. J. Butterworth T. C. Wallace Document Control (Clears EF2 - 45,693) e I336 293

IE Bulletin 79-15 Edison submits the following information in response to the quescions in this bulletin.

1. Question: The number of deep draft pumps similar to those shown in Figures 1 and 2 utilized in safety related applications in each facility.

Response: I Fermi 2 utilizes a total of 10 vertical turbine ESF service water pumps similar to Figure 1 in IE Bulletin 79-15. These pumps are not used to pump primary coolant water but service water from the RHR Complex building water reservoir.

2. Question: Manufacturer, model, capacity and plant application.

Response: Fermi 2 utilizes these pumps in three systems, RHRSW, EESW, and DGSW systems. Each system is described separately.

RHRSW - (4 pumps)

Two parallel pumps in each divinion supply the service water to the RHR Heat Exchanges.

Manufacturer: Gould Pumpe Vertical Pump Division Model: VITX-SD, 12 x 18 i;MC - 2 stage Capacity: 4500 gpm each pump.

ETSW (2 pumps)

One pump in each division supplies RHR reservoir water to the EECW heat exchangers. The EECW provides auxiliary cooling water to various ESF s, stems.

Manufacturer: Coulds Pump vertical Pump Division Model: VIT, 8 x 14 JMC - 2 stage Capacity: 1600 gpm.

pisW (4 pumps)

One DGSW pump supplies each Emergency Diesel Generator with cooling water from the RHR Reservoir..

Manufacturer: Goulds Pump Vertical Pump Division Model: VIT - 8 x 12 JMC, 2 stage.

Capacity: 800 gpm.

3. Question: Overall dimensions of pumps.

Response: The overall pimp length (OPL) from the top of the driver to the bottom of the suction bell is given below. In addition, the TPL from the bottom of'the mounting plate to the bottom of the suction bell is included as this dimension is essentially the length of the suction column on figure 1 of this Bulletin,

" M i336 294 RHRSW Pumps 48' - 9 7/8" 40' - 10 k" EESW Pumps 45' - 5 1/8" 39' - 6" DGSW Pumps 43' - 11 5/8" 39' - 4"

4. Question: Summary of Startup, testing, and routine mair.tenance history.

Response: The pu'mps have only been operated during the factory shop tests. They have not yet been operated at the plant site. ,The Factor, tests were conducted on each pump and measured pump head and flow to tal: alate NPSH and Head-capacity vs. flow curves. All pumps met the design specifications and the curves and data sheet are included in the vendors' Type I manual.

J

5. Question: Operational problems and major repair efforts.

Response: There have been no repairs necessary to the pumps or motors as they have not been ope.ated. Upon receipt at the Fermi 2 site the pumps were given an inspection for general workmanship and dimensional correctness and were found to be in compliance. It was also verified that the proper "N" stamp was affixed noting acceptance by an authorized inspector.

, It should be noted that these pumps and motors were built under a QA Level I inspection program and meeting he requirements of the ASME Section III, Class 3 Code. The pressure retaining parts were subject to NDT (non-destructive testing).

6. Question: The longest interval that each pump has been available for operation without corrective maintenance. Identify the number of cycles of operation during this interval, the duration of each cycle and the operating mode (s) (recirculation, rated-flow, etc.) Identify the longest continuous operation at or near rated flow conditions for each pump and the status of the pump operability at the end of the run.

Response: Edison has no operating data on these pumps.

1336 295 s