ML18025A984: Difference between revisions
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[External_Sender] FW: Proposed NRC RAI responsesDate:Tuesday, January 23, 2018 1:20:56 PMAttachments:Scanned from a Xerox Multifunction Printer.pdfimg-119113951-0001.pdfScanned from a Xerox Multifunction Printer.pdfLauren - Ginna Site Engineering provided the responses below as a follow up to the Ginna FloodingFE audit review call held on 1/17/18. Please let me know if any additional information is needed. Thanks.Dave Distel RAI 1 : Please provide details regarding the location and type of doors used as flood barriers in theDiesel generator Building and the Battery/Air Handling Rooms. Response : see attached sketch 1 RAI 2 : Please address dynamic effects on the Diesel Generator and Battery Room/Air Handling Roomdoors, in accordance with NEI 16-05, section B.2.2.2 Response : As you can see from this velocity/vector figure from our flooding analysis, img-119113951-0001, the flow rate at the north face of the DG Building is away from the doors. Thebattery room, air handling room, and south facing doors in the DG rooms are inside the TurbineBuilding, where the water is stagnant. These doors, therefore, are not subject to any dynamiceffects. RAI 3 : Is closing the cam locks on the DG Building doors time-critical actions ? Response : Engaging the door seal cam locks are not time-critical actions. Per ER-SC.2, these camlocks are engaged when entering Protection Level 1 or 2, which occurs long before the precipitationbegins. The large DG doors' cam locks are always engaged .Three of the 8 cam locks on thepersonnel doors are not engaged. Also, for a Flood, only the "B" EDG is credited, so only 3 door camlocks need to be maneuvered, a very short duration action. See attached excerpts from ER-SC.2. This Email message and any attachment may contain information that is proprietary, legallyprivileged, confidential and/or subject to copyright belonging to Exelon Corporation or itsaffiliates ("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 fordelivery of this Email to the intended recipient(s), you are hereby notified that anydissemination, distribution or copying of this Email is strictly prohibited. If you have receivedthis message in error, please immediately notify the sender and permanently delete this Emailand any copies. Exelon policies expressly prohibit employees from making defamatory oroffensive statements and infringing any copyright or any other legal right by Emailcommunication. Exelon will not accept any liability in respect of such communications. -EXCIP | [External_Sender] FW: Proposed NRC RAI responsesDate:Tuesday, January 23, 2018 1:20:56 PMAttachments:Scanned from a Xerox Multifunction Printer.pdfimg-119113951-0001.pdfScanned from a Xerox Multifunction Printer.pdfLauren - Ginna Site Engineering provided the responses below as a follow up to the Ginna FloodingFE audit review call held on 1/17/18. Please let me know if any additional information is needed. Thanks.Dave Distel RAI 1 : Please provide details regarding the location and type of doors used as flood barriers in theDiesel generator Building and the Battery/Air Handling Rooms. Response : see attached sketch 1 RAI 2 : Please address dynamic effects on the Diesel Generator and Battery Room/Air Handling Roomdoors, in accordance with NEI 16-05, section B.2.2.2 Response : As you can see from this velocity/vector figure from our flooding analysis, img-119113951-0001, the flow rate at the north face of the DG Building is away from the doors. Thebattery room, air handling room, and south facing doors in the DG rooms are inside the TurbineBuilding, where the water is stagnant. These doors, therefore, are not subject to any dynamiceffects. RAI 3 : Is closing the cam locks on the DG Building doors time-critical actions ? Response : Engaging the door seal cam locks are not time-critical actions. Per ER-SC.2, these camlocks are engaged when entering Protection Level 1 or 2, which occurs long before the precipitationbegins. The large DG doors' cam locks are always engaged .Three of the 8 cam locks on thepersonnel doors are not engaged. Also, for a Flood, only the "B" EDG is credited, so only 3 door camlocks need to be maneuvered, a very short duration action. See attached excerpts from ER-SC.2. This Email message and any attachment may contain information that is proprietary, legallyprivileged, confidential and/or subject to copyright belonging to Exelon Corporation or itsaffiliates ("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 fordelivery of this Email to the intended recipient(s), you are hereby notified that anydissemination, distribution or copying of this Email is strictly prohibited. If you have receivedthis message in error, please immediately notify the sender and permanently delete this Emailand any copies. Exelon policies expressly prohibit employees from making defamatory oroffensive statements and infringing any copyright or any other legal right by Emailcommunication. Exelon will not accept any liability in respect of such communications. -EXCIP}} | ||
}} | |||
Revision as of 01:14, 18 May 2018
| ML18025A984 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 01/23/2018 |
| From: | Distel D J Exelon Corp |
| To: | Gibson L K Beyond-Design-Basis Management Branch |
| Gibson L K | |
| Shared Package | |
| ML18025A983 | List: |
| References | |
| Download: ML18025A984 (2) | |
Text
From:Distel, David J:(GenCo-Nuc)To:Gibson, LaurenCc:Wrobel, George:(GenCo-Nuc); Joe Bellini; Lanka, Bradley Franklin F:(GenCo-Nuc)
Subject:
[External_Sender] FW: Proposed NRC RAI responsesDate:Tuesday, January 23, 2018 1:20:56 PMAttachments:Scanned from a Xerox Multifunction Printer.pdfimg-119113951-0001.pdfScanned from a Xerox Multifunction Printer.pdfLauren - Ginna Site Engineering provided the responses below as a follow up to the Ginna FloodingFE audit review call held on 1/17/18. Please let me know if any additional information is needed. Thanks.Dave Distel RAI 1 : Please provide details regarding the location and type of doors used as flood barriers in theDiesel generator Building and the Battery/Air Handling Rooms. Response : see attached sketch 1 RAI 2 : Please address dynamic effects on the Diesel Generator and Battery Room/Air Handling Roomdoors, in accordance with NEI 16-05, section B.2.2.2 Response : As you can see from this velocity/vector figure from our flooding analysis, img-119113951-0001, the flow rate at the north face of the DG Building is away from the doors. Thebattery room, air handling room, and south facing doors in the DG rooms are inside the TurbineBuilding, where the water is stagnant. These doors, therefore, are not subject to any dynamiceffects. RAI 3 : Is closing the cam locks on the DG Building doors time-critical actions ? Response : Engaging the door seal cam locks are not time-critical actions. Per ER-SC.2, these camlocks are engaged when entering Protection Level 1 or 2, which occurs long before the precipitationbegins. The large DG doors' cam locks are always engaged .Three of the 8 cam locks on thepersonnel doors are not engaged. Also, for a Flood, only the "B" EDG is credited, so only 3 door camlocks need to be maneuvered, a very short duration action. See attached excerpts from ER-SC.2. This Email message and any attachment may contain information that is proprietary, legallyprivileged, confidential and/or subject to copyright belonging to Exelon Corporation or itsaffiliates ("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 fordelivery of this Email to the intended recipient(s), you are hereby notified that anydissemination, distribution or copying of this Email is strictly prohibited. If you have receivedthis message in error, please immediately notify the sender and permanently delete this Emailand any copies. Exelon policies expressly prohibit employees from making defamatory oroffensive statements and infringing any copyright or any other legal right by Emailcommunication. Exelon will not accept any liability in respect of such communications. -EXCIP