ML093220423

RAI, Diesel Fuel Oil Storage and Testing Technical Specification on Changes

ML093220423
Person / Time
Site:	Columbia
Issue date:	11/18/2009
From:	Nicholas Difrancesco Plant Licensing Branch IV
To:	Humphreys M Energy Northwest
DiFrancesco Nick, NRR/DORL/LP4, 415-1115
References
TAC ME2121
Download: ML093220423 (4)

Text

From: DiFrancesco, Nicholas Sent: Wednesday, November 18, 2009 11:38 AM To: Humphreys, Michael C.

Cc: Walli, Lori A.

Subject:

DRAFT Request for Additional Information (RAIs) Re: Diesel Fuel Oil Storage and Testing Technical Specification Changes (TAC ME2121)

Mike, Below is the draft request for additional information (RAI) from the Component Performance and Testing Branch regarding the proposed diesel generator fuel oil storage and testing technical specifications changes. The lead reviewer for the draft questions is available through Dec 3 and Dec 14 - 18 if you are interested in a conference call to discuss the staff questions.

Regards, Nick DiFrancesco Project Manager Nuclear Regulatory Commission Division of Operating Reactor Licensing nicholas.difrancesco@nrc.gov Tel: (301) 415-1115 Fax: (301) 415-1222 DRAFT DRAFT REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST FOR CHANGES TO TECHNICAL SPECIFICATIONS RELATING TO DIESEL GENERATOR FUEL OIL STORAGE AND TESTING COLUMBIA GENERATING STATION DOCKET NO. 50-397 TAC NO. ME2121 RAI 001 On Page 5 of 16 of the Enclosure, it is stated that The level equivalent to a 7 day supply is 330 gallons for Division 1 or 2 DG, and 165 gallons for Division 3 DG. Please confirm that these 7 day supplies are for a lube oil that the EDG manufacturer has confirmed is compatible with ULSD fuel, and that these quantities are derived from consumption rates applicable to the EDG operating with ULSD fuel.

RAI 002 On Page 8 of 16 of the Enclosure, it is stated that Following the calculation method outlined in Reference 4, utilizing actual consumption rates determined by testing Are these consumption rates determined by testing with ULSD fuel? If not, please explain why these rates are conservative compared to testing with ULSD fuel.

RAI 003

On Page 10 of 16 of the Enclosure, it is stated that Energy Northwest currently allows a range of API Gravity values at 60°F of greater than 27 degrees but less than or equal to 38 degrees.

Please explain what happens if you receive a shipment of fuel oil that has an API Gravity of greater than 38 degrees.

RAI 004 On Page 11 of 16 of the Enclosure, it is stated that The corresponding updated ANSI standard, ANS/ANSI-59.51-1997 (Reference 5), Section 5.51, Tanks, contains the same requirements while providing more specific details as regards to the tank capacity being sufficient to maintain at least 60 minutes of operation after reaching the low level alarm setpoint (at 110% of continuous rated load) based on the minimum quality fuel oil that is acceptable. In the next paragraph it is stated that From the above it can be ascertained that the principle safety concern with the volume of stored diesel fuel oil in the day tank is that there is an equivalent supply of fuel oil in the day tank is that there is an equivalent supply of fuel to support one hour of operation at 110% of full load. The staffs interpretation is that the minimum day tank capacity is an amount of fuel oil to support 60 minutes of operation at 100 percent continuous rated load plus a minimum additional margin of 10 percent. Please explain how a supply of fuel to support one hour of operation at 110 percent of full load is conservative as compared to the staffs interpretation.

RAI 005 On Page 15 of 16 of the Enclosure, Reference 6 is listed as ASTM D975-08. Please explain why ASTM D975-08a is not used as the reference.

RAI 006 ASTM D975-08a allows fuel oil to contain up to 5 percent biodiesel. Please explain how your fuel oil calculation will be affected if your fuel oil contains 5 percent biodiesel.

RAI 007 Please confirm that the volumes shown in Table B 3.8.3-1 include an unusable volume for vortex prevention and for water and sediment at the tank bottoms.

RAI 008 Section 5.4 of ANSI/ANS-59.51-1997 states that the usable fuel oil storage requirements calculation shall include an explicit allowance for fuel consumption required by periodic testing.

Please discuss how this allowance is incorporated into your seven day fuel oil quantities.

DRAFT E-mail Properties Mail Envelope Properties (0046140293E11F408991442DB4FE25CA01EB57168A)

Subject:

DRAFT Request for Additional Information (RAIs) Re: Diesel Fuel Oil Storage and Testing Technical Specification Changes (TAC ME2121)

Sent Date: 11/18/2009 11:38:27 AM Received Date: 11/18/2009 11:38:27 AM From: DiFrancesco, Nicholas Created By: Nicholas.DiFrancesco@nrc.gov Recipients:

MCHUMPHREYS@energy-northwest.com (Humphreys, Michael C.)

Tracking Status: None LWALLI@energy-northwest.com (Walli, Lori A.)

Tracking Status: None Post Office:

HQCLSTR01.nrc.gov Files Size Date & Time MESSAGE 15174 11/18/2009 Options Expiration Date:

Priority: olImportanceNormal ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received: