ML062200308

RAI, Liquid Control Pumps

ML062200308
Person / Time
Site:	Duane Arnold
Issue date:	09/28/2006
From:	Richard Ennis, Spaulding D NRC/NRR/ADRO/DORL/LPLIII-1
To:	Vanmiddlesworth G Nuclear Management Co
D. Spaulding LPL3-1 X2928
References
TAC MD1844
Download: ML062200308 (4)

Text

September 28, 2006 Mr. Gary Van Middlesworth Vice President Duane Arnold Energy Center 3277 DAEC Road Palo, Iowa 52324-9785

SUBJECT:

DUANE ARNOLD ENERGY CENTER - REQUEST FOR ADDITIONAL INFORMATION RELATED TO THE REQUEST FOR RELIEF CONCERNING FLOW MEASUREMENT FOR THE STANDBY LIQUID CONTROL PUMPS (TAC NO. MD1844)

Dear Mr. Van Middlesworth:

Your letter of May 8, 2006, submitted a request for relief concerning flow measurement for the standby liquid control pumps. We are reviewing this information, and find that additional information is needed as shown in the enclosed request for additional information (RAI). A telephone conference call was held on July 25, 2006, to discuss this RAI. Deirdre Spaulding, former Project Manager, spoke with Tony Browning of your organization on August 10, 2006, and he agreed to respond within 30 days of receipt of this RAI. If you have any questions, please contact Karl Feintuch at (301) 415-3079.

Sincerely,

/RA/

Richard B. Ennis, Senior Project Manager Plant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-331

Enclosure:

As stated cc w/encl: See next page

Mr. Gary Van Middlesworth September 28, 2006 Vice President Duane Arnold Energy Center 3277 DAEC Road Palo, Iowa 52324-9785

SUBJECT:

DUANE ARNOLD ENERGY CENTER - REQUEST FOR ADDITIONAL INFORMATION RELATED TO THE REQUEST FOR RELIEF CONCERNING FLOW MEASUREMENT FOR THE STANDBY LIQUID CONTROL PUMPS (TAC NO. MD1844)

Dear Mr. Van Middlesworth:

Your letter of May 8, 2006, submitted a request for relief concerning flow measurement for the standby liquid control pumps. We are reviewing this information, and find that additional information is needed as shown in the enclosed request for additional information (RAI). A telephone conference call was held on July 25, 2006, to discuss this RAI. Deirdre Spaulding, former Project Manager, spoke with Tony Browning of your organization on August 10, 2006, and he agreed to respond within 30 days of receipt of this RAI. If you have any questions, please contact Karl Feintuch at (301) 415-3079.

Sincerely,

/RA/

Richard B. Ennis, Senior Project Manager Plant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-331

Enclosure:

As stated cc w/encl: See next page DISTRIBUTION:

PUBLIC LPL3-1 R/F RidsNrrPMREnnis RidsNrrLATHarris RidsNrrDorlLple RidsOgcRp RidsAcrsAcnwMailCenter RidsRgn3MailCenter RidsNrrDorlDpr TLiu YWong KFeintuch ADAMS Accession Number: ML062200308 OFFICE NRR/LPL3-1/PM NRR/LPL3-1/PM NRR/LPL3-1/LA NRR/LPL3-1/(A)BC NAME KFeintuch REnnis:ca THarris MMurphy DATE 09/21/06 09/21/06 09/21/06 09/28/06 OFFICIAL RECORD COPY

REQUEST FOR ADDITIONAL INFORMATION RELATED TO THE FLOW MEASUREMENT FOR THE STANDBY LIQUID CONTROL PUMPS DUANE ARNOLD ENERGY CENTER DOCKET NO. 50-331

1. Please provide isometric diagram of the standby liquid control (SBLC) System including details such as the length of piping and system components.

2. The licensee stated that portable ultra-sonic flow meters were installed on the common SBLC pump discharge piping to determine the practicality of using later technology ultra-sonic flow meters to measure flow. The flow meter transducers were installed at three different locations on the discharge piping. However, each location resulted in significantly different measured flow rates compared to the other locations and the test tank level method. Please provide the data on the measured flow rates at different locations using the ultra-sonic flow meters and compare them to those using the test tank level method.

3. Paragraph ISTB-3510(a) of the American Society of Mechanical Engineers Operation and Maintenance Code specifies that the flow rate determination shall be accurate to within +/-2 percent actual. Please provide the flow rate determination methodology that meets this Code requirement. Also, include the correlation curve conversion from test tank level to water volume.

ENCLOSURE

Duane Arnold Energy Center cc:

Mr. J. A. Stall Regional Administrator, Region III Senior Nice President, Nuclear and Chief U.S. Nuclear Regulatory Commission Nuclear Officer Suite 210 Florida Power & Light Company 2443 Warrenville Road P. O. Box 14000 Lisle, IL 60532-4351 Juno Beach, FL 33408-0420 Mr. M. S. Ross Mr. M. Warner Managing Attorney Vice President, Nuclear Operations Florida Power & Light Company Support P. O. Box 14000 Florida Power & Light Company Juno Beach, FL 33408-0420 P. O. Box 14000 Juno Beach, FL 33408-0420 Mr. R. E. Helfrich Senior Attorney Mr. D. A. Curtland Florida Power & Light Company Plant Manager P. O. Box 14000 Duane Arnold Energy Center Juno Beach, FL 33408-0420 3277 DAEC Rd.

Palo, IA 52324-9785 Mr. W. E. Webster Vice President, Nuclear Operations Mr. R. S. Kundalkar Florida Power & Light Company Vice President, Nuclear Engineering P. O. Box 14000 Florida Power & Light Company Juno Beach, FL 33408-0420 P. O. Box 14000 Juno Beach, FL 33408-0420 John Bjorseth Site Director Daniel McGhee Duane Arnold Energy Center Utilities Division 3277 DAEC Road Iowa Department of Commerce Palo, IA 52324 Lucas Office Buildings, 5th Floor Des Moines, IA 50319 Steven R. Catron Manager, Regulatory Affairs Chairman, Linn County Duane Arnold Energy Center Board of Supervisors 3277 DAEC Road 930 1st Street SW Palo, IA 52324 Cedar Rapids, IA 52404 U. S. Nuclear Regulatory Commission Resident Inspectors Office Rural Route #1 Palo, IA 52324