GNRO-2011/00086, HI-STORM 100 Cask System Supplemental Cooling System (Scs) Validation Test

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HI-STORM 100 Cask System Supplemental Cooling System (Scs) Validation Test
ML112870571
Person / Time
Site: Grand Gulf, Holtec  Entergy icon.png
Issue date: 10/14/2011
From: Perino C
Entergy Operations
To:
Document Control Desk, NRC/NMSS/SFST
References
GNRO-2011/00086
Download: ML112870571 (6)
v • d • e


Text

......."....... Ope-ratilons, Inc.

Entergy Christina L Perino GNRO-2011/00086 UCltoDE~r 14, 2011 u.s. Nuclear Regulatory Commission AnN: Document Control Desk nraj....Tnr Division of Spent Storage and Transportation Office of Nuclear Material Safety and Safeguards Washington, DC 20555-0001

Subject:

HI-STORM 100 Cask System Supplemental Cooling System (SCS) Validation Test Grand Gulf Nuclear Station, Unit 1 Docket Nos. 50-416 and 72-50 License No. NPF-29

Dear Sir or Madam:

Section 9, Special Requirements for First Systems in Place, of the Holtec HI-STORM 100 System Certificate of Compliance (CoC), requires a report of the Supplemental Cooling System (SCS) validation test and analysis for each first time user of a HI-STORM 100 Cask System SCS that uses components or a system that is not essentially identical to components or a system that has been previously tested. The SCS was tested at Grand Gulf Nuclear Station, Unit 1 (GGNS) on July 13, 2011, during the loading of Holtec Cask 534 which had a measured decay heat load of 18.74 kW.

Cask Data:

Cask Certificate Number: 1014 Amendment 5 Cask Model Number: HI-STORM 100S-B Cask Identification Number: Holtec Cask 534 Date of Test: July 13, 2011 Cask Heat Load: 18.74 kW The results of the SCS testing are contained in Attachment 1, Thermal Validation of Grand Gulf (GGNS) Supplemental Cooling System (SCS). These results show that system performance limits the coolant temperature to below 180 degrees Fahrenheit under steady-state conditions for the design basis heat load at an ambient air temperature of 100 degrees Fahrenheit as required by the Final Safety Analysis Report for the HI-STORM 100 Cask System, revision 7.

If you have any questions or require additional information, please contact Christina L. Perino at 601-437-6299.

Attachments: 1 Thermal Validation of Grand Gulf (GGNS) Supplemental Cooling System (SCS) cc: NRC Senior Resident Inspector Grand Gulf Nuclear Station Port Gibson, MS 39150 U.S. Nuclear Regulatory Commission AnN: Mr. Elmo Collins, Jr.

Region Administrator, Region IV 612 East Lamar Blvd, Suite 400 Arlington, 76011-41 U. S. Nuclear Regulatory Commission AnN: Mr. Alan Wang, NRR/DORL Mail Stop OWFN/8 B1 Washington, DC 20555-0001 U. S. Nuclear Regulatory Commission Director, Division of Spent Fuel Storage and Transportation Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001 U.S. Nuclear Regulatory Commission AnN: Mr. Blair Spitzberg RSFS Branch Chief, Region IV 612 East Lamar Blvd., Suite 400 Arlington, TX 76011-4125 to 1

1 of 4 Attachment 1 GNRO-2011/00086 Thermal Validation of Grand Gulf (GGNS) Supplemental Cooling System (SCS) to GNRO-2011/00086 2 of 4 Holtec 555 Lincoln Drive West Marlton, NJ 08053 Telephone (856) 797*0900 HOLTEC INTERNATIONAL Fax (856) 797*0909 September 30, 2011 Mr. David Ellis Senior Project Manager, Dry Fuel Storage Entergy Operations, Inc. (Grand Gulf)

P. O. Box 756 Port Gibson, MS 39150

References:

GGNS SCS Thermal Validation Test Request letter, 8/4/2011

Subject:

Thermal Validation of Grand Gulf (GGNS) Supplemental Cooling System (SCS)

Dear Mr. Ellis:

In accordance with the above referenced letter, Holtec was requested to review the operating performance data for the Supplemental Cooling System (SCS).

HI-STORM FSAR Revision 7 section 2.C.2 states:

0 If the system uses water as the coolant, the system is sized to limit the coolant temperature to below 180 P under steady-state conditions for the design basis heat load at an ambient air temperature of 1OOoF. Active components (Le., pump or air cooler fan) are powered by electric motors with a backup power supply for uninterrupted operation.

After review of GONS SCS performance data, Holtec has confirmed that the SCS is operating in accordance with Appendix 2.C of the HI-STORM FSAR.

Please feel free to contact us with any questions or concerns.

~.~"

Debu Mitra-Majumdar cc: Suzanne Leblang (Entergy) John Griffiths (Holtec) Pankaj Chaudhary (Holtec) Kevin Cuthill (Holtec)

Doc. J.D.: 2005-001 to GNRO-2011/00086 3 of 4 Date: 4 11 To: Larry Project Manager, Holtec International From: David Senior Project Manager, Dry Fuel Storage Grand Gulf Nuclear Station Operations, Inc.

Certificate of Compliance 1014 Amendment 5 Condition 9 Mr.

This letter is sent to transmit operating performance data for equipment subject to the above referenced CoC license condition, and to request that your firm, as the certificate holder, perform a thermal validation test based on the provided data and provide the results of the test to Entergy.

Included in this letter is the data set from the first use of the Supplemental Cooling System (SCS) under conditions which were required by the certificate, and a copy of the Component Completion Record for the SCS supplied to Entergy by your firm.

If further information is required, please do not hesitate to contact me at 601.437.2489 or via email to =~~=-='::~~'-"-='

Thank you, David Ellis cc: Susan Leblang Dennis Coulter Jerrell Campell to GNRO-2011/00086 Grand Gulf Nuclear Station Page 4 of4 Cycle 18 Dry Fuel Storage Supplemental Cooling System First Time Use Data Set for Certificate of Compliance 1014 Amendment 5 License Condition 9 Hour SCS Inlet SCS Outlet Flow (F degrees) (F degrees) (Gal/min)

GGN SCS Performance Data 0 154 133 18 1 142 128 16 160 2 138 125 17 3 138 124 17 4 134 120 17 150 5 132 120 17 6 130 118 17 \

7 128 116 17 u..

140 8 123 117 17

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9 122 117 16  ;:, 130

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10 11 121 121 116 110 16 16 8-E 120

.. . . - .. llttt _ ..

12 120 109 16 {:!.

13 118 108 16 .. ..

14 118 108 16 110 15 117 103 16 16 115 102 16 100 17 113 102 16 18 112 102 16 90 19 110 102 16 ~

" '? I>- '0 'b 'l> ,,<:c> ,," ,,~ ,,'? "I>-

20 108 100 16 21 108 100 15 - - - SCS Inlet (F - - S C S Outlet (F MPC Backfill Pressure = 51.5 PSIG Cask Heat Load = 18.74kW

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