ML18009A137

NRR E-mail Capture - (External_Sender) Ginna FE Audit Info Needs

ML18009A137
Person / Time
Site:	Ginna
Issue date:	01/08/2018
From:	Distel D Exelon Corp
To:	Lauren Gibson Division of Licensing Projects
References
Download: ML18009A137 (4)

Text

NRR-DMPSPEm Resource From: Distel, David J:(GenCo-Nuc) <David.Distel@exeloncorp.com>

Sent: Monday, January 08, 2018 9:07 AM To: Gibson, Lauren Cc: Wrobel, George:(GenCo-Nuc); Joe Bellini; Lanka, Bradley Franklin F:(GenCo-Nuc)

Subject:

[External_Sender] RE: Ginna FE Audit Info Needs Attachments: BSD26 REV 0.pdf Lauren - responses provided below:

1. Table 7-1: BSD/29F Presray barrier is 3.3 ft. high, flood is 2.7 ft. high. APM is 0.6 ft. BSD/26, 27, 28 Presray barrier is 2.0 ft. high, flood is 1.4 ft., 1.6 ft., and 1.6 ft. high, APM is 0.6 ft., 0.4 ft., and 0.4 ft. Attached is a typical drawing of the Presray door seals.

2. Portable Presray barriers fit into channels at the doors. Sealing surfaces are flexible, and filled with air after installation for a tight fit (i.e., no leakage).

3. The second column is the door designation (or wall). The 3rd column is the flood height. The fifth column is the height of protection (height of Presray door seal, qualification of door or wall). APM is the Available Physical Margin in feet.

4. The screen house is not credited to mitigate the flooding event.

5. The battery rooms and EDG rooms have doors with seals that are approved flood barriers. The Aquafence is provided for defense-in-depth and it is not necessary for the seals to cure to maintain key safety functions. The Aquafence installation procedure GMM-23-99-FLOODBARRIER provides detailed instructions regarding installation.

It is accessed from procedure ER-SC.2, when a rainfall of more than 10 inches over a 24-hour period is forecasted in the next 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. An estimate of the installation time is included in ESR-14-0226. The time is 32 hours3.703704e-4 days <br />0.00889 hours <br />5.291005e-5 weeks <br />1.2176e-5 months <br />, which is controlled by the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> cure time of the silicone foam.

Please let me know if any additional information is needed.

Thanks.

Dave Distel From: Gibson, Lauren [1]

Sent: Thursday, December 21, 2017 4:10 PM To: Distel, David J:(GenCo-Nuc)

Subject:

[EXTERNAL] Ginna FE Audit Info Needs

Dave, As I described on the phone today, I was not able to discern the information I need for the evaluation of the FE (ML17069A004) from the documents in the ePortal. I understand that Ginna is relying on the installation of temporary flood barriers. Here are my information needs:

1

1) Its not clear to me in all cases which barriers are going on which doors or structures, or how high the particular barriers are.

2) It appears from the audit documents that some barriers are around and in front of areas instead of directly on doors; is there expected leakage past the barriers? How much?

3) Also, it would be helpful to get a crosswalk for Table 7-1 and the Flooding Capacity vs. Demand for Ginna Structures calculation in the ePortal. (I was also not clear on the contents of the margin height/flood barrier column- margin between the flood height and the height of the barrier? What do the highlighted terms (ex, F.S.

1.9) refer to?)

4) I also need more clarification on the names of the structures. Is the screen house represented in Table 7-1?

5) Does Ginna have sufficient time to install the AquaFence temporary barriers? If not, then please provide more information on the water-resistant doors at the Battery and Diesel Generator rooms.

I will be out of the office until January 3rd. At that time, we can discuss how to respond to these info needs (documentation on the ePortal, an audit conversation, what may need to be docketed, etc. . . ) and well as address any questions you may have.

Thank you, and Happy Holidays.

Lauren Lauren K. Gibson Project Manager Beyond-Design-Basis Management Branch Division of Licensing Projects Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission (301) 415-1056 This Email message and any attachment may contain information that is proprietary, legally privileged, confidential and/or subject to copyright belonging to Exelon Corporation or its affiliates ("Exelon"). This Email is intended solely for the use of the person(s) to which it is addressed. If you are not an intended recipient, or the employee or agent responsible for delivery of this Email to the intended recipient(s), you are hereby notified that any dissemination, distribution or copying of this Email is strictly prohibited. If you have received this message in error, please immediately notify the sender and permanently delete this Email and any copies.

Exelon policies expressly prohibit employees from making defamatory or offensive statements and infringing any copyright or any other legal right by Email communication. Exelon will not accept any liability in respect of such communications. -EXCIP 2

Hearing Identifier: NRR_DMPS Email Number: 84 Mail Envelope Properties (BY2PR05MB600643488528CC91BD67AC6FD130)

Subject:

[External_Sender] RE: Ginna FE Audit Info Needs Sent Date: 1/8/2018 9:07:25 AM Received Date: 1/8/2018 9:10:28 AM From: Distel, David J:(GenCo-Nuc)

Created By: David.Distel@exeloncorp.com Recipients:

"Wrobel, George:(GenCo-Nuc)" <george.wrobel@exeloncorp.com>

Tracking Status: None "Joe Bellini" <joe.bellini@aterrasolutions.com>

Tracking Status: None "Lanka, Bradley Franklin F:(GenCo-Nuc)" <Bradley.Lanka@exeloncorp.com>

Tracking Status: None "Gibson, Lauren" <Lauren.Gibson@nrc.gov>

Tracking Status: None Post Office: BY2PR05MB600.namprd05.prod.outlook.com Files Size Date & Time MESSAGE 4397 1/8/2018 9:10:28 AM BSD26 REV 0.pdf 521280 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received: