ML20151P058

From kanterella
Jump to navigation Jump to search
Requests That Util Provide Listed Info Re Emergency Diesel Generator Voltage Dips within 30 Days of Ltr Date,Including Normal Voltage (Steady State) at 4160-volt Bus
ML20151P058
Person / Time
Site: Crystal River Duke Energy icon.png
Issue date: 08/05/1988
From: Silver H
Office of Nuclear Reactor Regulation
To: Wilgus W
FLORIDA POWER CORP.
References
NUDOCS 8808090170
Download: ML20151P058 (2)


Text

. ..

l b August 5, 1988 Docket No. 50-302 DISTRIBUTION i HSilver RNRC N'&~ Local PDRs 0GC-WF SVarga, 14/E/4 Edordan, 3302MN88 Mr. W. S. Wilgus Glainas, 14/H/3 BGrimes, 9/A/2 l Vice President, Nuclear Operations DHiller ACRS(10)

Florida Power Corporation PD22 Rdg. Gray File ATTN: Manager, Nuclear i.icensing FRcsa, 8/0/20 DTondi,6/0/20 P. O. Box 219 Crystal River, Florida 32629

Dear Mr. Wilgus:

SUBJECT:

CRYSTAL RIVER UNIT 3 - EMERGENCY DIESEL GENERATOR VOLTAGE DIPS By letter dated February 29, 1988, you submitted results of the tests performed to validate the calculated voltage dips at the 4160 volt level resulting from the application of successive load blocks to the c nergency diesel generator (EDG). As we noted in our letter of June 15, 1988, the submitted information is not adequate to permit the staff to draw satisfactory conclusions. In order to permit comp'letion of our review, you are requested to provide the following information within 30 days of the date of this letter.

a) What is the normal voltage (steady st 'e) at the 4160V bus? This value should be the selected base value for aalculation of voltage dips in terms of percen'.

b) The original test tracing of time ... voltage uses a conversion formula of 150 mm peak-to-peak = 70V RMS. Describe the calibration of the recorder to arrive at this conversion formula.

c) Provide the voltage measurements that were taken during the tests at the 480V and 120V loads. If no such measurements were taken, submit the voltage analysis, including assumptions and taking into consideration all impedances in the circuits and the bus loadings at the worst case condition, which establish the resulting voltage dips at the 480 and 120V loads.

Sincerely, Original signed by Harley Silver, Project Manager Pro.,ect Directorate II-2 Division of Reactor Projects-I/II Office of Nuclear Reactor Regulation

>[4ep next pagegh PMefb-2 D I-2 SEL HSilver:bd HBerkow FRosa[

08/p88 08/g88 4 08/f/88 [

8808090170 880805 flN POR ADOCK 05000302 P PDC

t e .

Mr. W. S. Wilgus Crystal River Unit No. 3 Nuclear Florida Power Corporation Generating Plant cc:

Mr. R. W. Neiser State Planning and Development Senior Vice President Clearinghouse and General Counsel Office of Planning and Budget Florida Power Corporation Executive Office of the Governor P. O. Box 14042 The Capitol Building St. Petersburg, Florida 33733 Tallahassee, Florida 32301 Mr. P. F. McKee Mr. F. Alex Griffin, Chairman Director, Nuclear Plant Operations Board of County Comissioners Florida Power Corporation Citrus County P. O. Box 219 110 North Apopka Avenue Crystal River, Florida 32629 Inverness, Florida 36250 Mr. Robert B. Borsum Mr. E. C. Simpson Babcock & Wilcox Director, Nuclear Site Nuclear Power Generation Division Florida Power Corporation Support 1700 Rockville Pike, Suite 525 P.O. Box 219 Rockville, Maryland 20852 Crystal River, Florida 32629 Resident inspector U.S. Nuclear Regulatory Comission 15760 West Powerline Street Crystal River, Florida 32629 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street N.W., Suite 3100 Atlanta, Georgia 30323 Jacob Daniel Nash Office of Radiation Control Department of Health and Rehabilitative SeryIces 1317 Winewood Blvd.

Tallahassee, Florida 32399-0700 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

__ _ _ _ ._