ML20040D121

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Forwards Request for Addl Info Re Seismic Qualification of Auxiliary Feedwater Sys.Response Required within 30 Days
ML20040D121
Person / Time
Site: Crystal River Duke Energy icon.png
Issue date: 01/07/1982
From: Stolz J
Office of Nuclear Reactor Regulation
To: Hancock J
FLORIDA POWER CORP.
References
GL-81-14, TAC-43647, NUDOCS 8201300259
Download: ML20040D121 (5)


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DISTRIBUTION:

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!!r. John A. Hancock D

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Manager, Nuclear Licensing.

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P. O. Box 14042,11.A.C. H-2 St. Petersburg, Florida 33733 4

Dear !!r. Hancock:

Fron our review of the information provided in your July 14, 1931 response to our Generic Letter 81-14 dated February 10, 1981 regarding the seisnic qualification of the Auxiliary (Emergency)

Feedwater Systens, we find that we require additional infomation.

The infornation required is o_utlindd in the enclosure.

In order to provide for a timely coinpletion of our review effort on the seismic design of your Emergency Feedwater System we require your responses within 30 days aftr.r receipt of this letter.

This request for infomation is part of Generic Letter 81-14 irhich was approved by GAO under a blanket clearance nurber R0072 which expires flovember 30, 1983 Sincerely, pcgicn:E SICAG M Jomi 7. SIOM' John F. Stolz, Chief t

Operating Reactors Branch #4 Division of Licensing

Enclosure:

Request for Additional l

Inforrution

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onep NRC FORM 318 00-80) NRCM 0N0 OFFICIAL RECORD COPY us e mi-m aa

Cryctal River Unit No. 3 50-302 Florida Power Corporation cc w/ enclosure (s):

Mr. S. A. Brandimore Mr. Robert B. Borsum Vice President and General Counsel Babcock & Wilcox P. O. Box 14042 Nuclear Power Generation Division St. Petersburg, Florida 33733 Suite 220, 7910 Woodmont Avenue Bethesda, Maryland 20814 Mr. Wilbur Langely, Chairman Board of County Commissioners Mr. Tom Stetka, Resident Inspector Citrus County U.S. Nuclear Regulatory Commission Iverness, Florida 36250 Route #3. Box 717 Crystal River, Florida 32629 Regional Radiation Representative Mr. Dan C. Poole EPA Region IV Nuclear Plant Manager 345 Courtland Street, N.E.

Florida Power Corporation Atlanta, Georgia 30308 P. O. Box 219 Crystal River, Florida 32629 Bureau of Intergovernmental Relations 660 Apalachee Parkway Crystal River Public Library Tallahassee, Florida 32304 668 N. W. First Avenue Crystal River, Florida 32629 Administrator Department of Environmental Regulation Power Plant Siting Section State of Florida 2600 Blair Stone Road Tallahassee, Florida 32301 Attorney General Department of Legal Affairs The Capitol Tallahassee, Florida.32304 J

Enclosure f.

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REQt.EST FOR ADDITIONAL INFmMATION ON EISMIC QUALIFICATION OF TE AUXILIARY FEEDWATER SYSTEM CRYSTAL RIVER NLCLEAR PLANT UNIT 3 Question 1 Define the emergency feedwater system (EFWS) boundary from '

suction to discharge (including the water source and heat sink).

(a) Provide a schematic sketch of the EFWS boundary.

(b) Include description of those portions of the system required to accomplish the EFWS function and connected brarch piping up to and including the second valve which is normally closed or capable of automatic closure when the safety function is required.

(c)

Include any portion of branch piping that is structurally coupled to the EFWS boundary such that the seismic rssponse of the branch piping transmits loads to the EFWS. As a minimum, include the branch lines outside the EFWS boundary to a point of three orthogonal restraints.

l (d)

Include all mechanical equipment and piping which are necessary or contain items which are neceissary for the-operation of the EFWS.

(e) All structures housing or supporting the EFW conponents.

Identify any branch pip'ing associated with the EFW system that does not fully meet the boundary requirements specified in items s

(b) and (c) above.

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_2-Question 2 Provide the following information for the EFWS:

(a) Whether the EFW system was included'within the scope of IE Bulletins 79-02, 79-04, 79-07, 79-14, 80-11, and IE Information Notice 80-21.

~(b) Hention what vertical seismic ' input was used for floors with fundamental frequency less than 25 cps.

(c) Provide a description of load combinations (including safe l

shutdown earthquake (SE)), acceptance criteria, allowable stresses and/or engineering evaluations for the structures supporting or housing the EFWS items.

(d) Provide proposed corrective actions for the folloving walkdown items:

1)

A 12" drain line routed to turbine-driven EFW pump is supported for dead weight only by rod-type supports.-

11) Suction line from condensate hotwell is routed close to emergency feedwater suction line from condensate storage tank; there appears to be no clearance between the two lines.

iii) Branching off the turbine-driven pump steam exhaust line was another line not appearing on drawings.

Question 3 Provide the completion date(s) of seismic upgrade proposals for the EFWS.

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Question 4 Table 1 of your response indicates that certain power supplies and the initiation and control system for the EFW system are not seismically qualified:

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(a)

Identify those non-seismically qualified items.

(b)

Describe your program and schedule for their upgrading.

or justify why upgrading is not required.

(c) Describe the results of your walk-downs of these items, along with the scope and schedule of any resulting corrective actions which were identified.

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