ML21175A035

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Rulemaking: Proposed Rule: Advanced Reactor Physical Security, Email from D. Young, NEI to D. Andrukat, NRC Follow-up Questions on NRC Response to NEI Question Concerning Proposed Eligibility Criterion 10 CFR 73.55(a)(7)(i)(A)
ML21175A035
Person / Time
Site: Nuclear Energy Institute
Issue date: 04/15/2021
From: Young D
Nuclear Energy Institute
To: Dennis Andrukat
NRC/NMSS/DREFS/RRPB
Andrukat, Dennis
References
NRC-2017-0090, RIN 3150-AK04
Download: ML21175A035 (1)


Text

From: YOUNG, David To: Andrukat, Dennis

Subject:

[External_Sender] Follow-up questions on NRC response to NEI question concerning proposed eligibility criterion

§ 73.55(a)(7)(i)(A)

Date: Thursday, April 15, 2021 6:32:24 PM

Dennis, Good afternoon.

See our follow-up questions below.

1. Does a technical analysis for criterion (A) assume that decay heat removal systems are disabled at T=0 (start of scenario)?
2. How is a passive decay heat removal system and/or structure addressed? For example, say a reactor is located in a very large pool of water that is below grade. Is the applicant to assume the water is not there at T=0 or is it credited for some period of time?
3. How are possible breaches in physical structures determined? Is the applicant to look at the physical processes resulting from the loss of decay heat removal systems and determine where breaches would occur?

Hopefully, these questions can be addressed in next Wednesdays meeting.

David Young l Technical Advisor Nuclear Security and Incident Preparedness Nuclear Energy Institute (202) 739-8127 This electronic message transmission contains information from the Nuclear Energy Institute, Inc. The information is intended solely for the use of the addressee and its use by any other person is not authorized. If you are not the intended recipient, you have received this communication in error, and any review, use, disclosure, copying or distribution of the contents of this communication is strictly prohibited. If you have received this electronic transmission in error, please notify the sender immediately by telephone or by electronic mail and permanently delete the original message. IRS Circular 230 disclosure: To ensure compliance with requirements imposed by the IRS and other taxing authorities, we inform you that any tax advice contained in this communication (including any attachments) is not intended or written to be used, and cannot be used, for the purpose of (i) avoiding penalties that may be imposed on any taxpayer or (ii) promoting, marketing or recommending to another party any transaction or matter addressed herein.

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