ML18317A219

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NRR E-mail Capture - (External_Sender) RAI EP 11.06.18-Question
ML18317A219
Person / Time
Site: Pilgrim
Issue date: 11/08/2018
From: Lampert M
Pilgrim Watch, Town of Duxbury, MA
To: John Lamb
Special Projects and Process Branch
References
Download: ML18317A219 (7)


Text

NRR-DMPSPEm Resource From: Mary Lampert <mary.lampert@comcast.net>

Sent: Thursday, November 8, 2018 10:45 AM To: Lamb, John

Subject:

[External_Sender] RAI EP 11.06.18-Question Attachments: RAI aircraft fuel considered in calculations heatup 11.08.18.pdf; RAI 11.06.18 ML18310A021.pdf Hello John:

Pilgrim Watch and the Town of Duxbury Nuclear Advisory Committee have two questions regarding the RAI discussed in the attachment.

We look forward to your timely response.

Enjoy the day.

Mary 1

Hearing Identifier: NRR_DMPS Email Number: 661 Mail Envelope Properties (011501d47779$fcb0f270$f612d750$)

Subject:

[External_Sender] RAI EP 11.06.18-Question Sent Date: 11/8/2018 10:44:50 AM Received Date: 11/8/2018 10:45:05 AM From: Mary Lampert Created By: mary.lampert@comcast.net Recipients:

"Lamb, John" <John.Lamb@nrc.gov>

Tracking Status: None Post Office: comcast.net Files Size Date & Time MESSAGE 217 11/8/2018 10:45:05 AM RAI aircraft fuel considered in calculations heatup 11.08.18.pdf 72584 RAI 11.06.18 ML18310A021.pdf 155593 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received:

TO: John Lamb DATE: November 8, 2018

SUBJECT:

RAI - Pilgrim EP Exemption [ML18310A021]

Mr. Lamb:

The RAI says that:

Issue Attachment 2 of Entergys submittal contains the Adiabatic Heatup Analysis for Drained Spent Fuel Pool. In the attachment, Table 2 Fuel Bundle Inputs for GNF2 Fuel lists the geometry inputs for the GNF2 fuel bundles evaluated in the analysis.

The mass of the upper and lower plenums, 13.217 and 14.612 lbms respectively, are listed. These values are then added to the calculated mass of zircaloy-2, which are used to calculate the total heat capacity of the fuel assembly. This heat capacity was used to demonstrate that a 10 hour1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> heat up time to the ignition temperature (900°C) would be available with a 10-month decay time, assuming the fuel assembly heats uniformly.

Request for Additional Information Based on the construction of a GNF2 fuel assembly, describe how the heat up rates of the plenums would be the same as the rest of the fuel assembly. Specifically, describe how the heat originating in the fuel gets to the upper and lower plenums under the assumed adiabatic conditions (when temperatures within the fuel bundle are assumed to maintain uniformity).

Pilgrim Watch and the Town of Duxbury Nuclear Advisory Committee have two questions:

1. Was the threat of terrorism considered in the calculations?
2. Was the potential of an aircraft fuel fire considered in the calculations?

If either of these was not considered, for each we want to know on what basis and for what reasons the NRC considered that it was acceptable to ignore it. The terrorism threat is not going to go away, and any scenario involving an aircraft attack must consider aircraft fuel.

If either of these was considered, please tell us which, and provide all specific information, data and calculations provided by Entergy, and NRCs assessment of the accuracy of that data and information.

Thank you and we look forward to a timely response.

Mary & Jim Lampert Pilgrim Watch/Town of Duxbury Nuclear Advisory Committee 148 Washington Street, Duxbury MA 02332 Tel. 781.934.0389/Email mary.lampert@comcast.net

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