ML092430517

Notice of Meeting on AFW Modifications, Questions to Be Discussed

ML092430517
Person / Time
Site:	Monticello, Point Beach
Issue date:	08/31/2009
From:	Tam P Plant Licensing Branch III
To:	Flentje F, Stanley Gardocki Florida Power & Light Co, Office of Nuclear Reactor Regulation
Poole Justin/DORL/LPL3-1/ 301-415-2048
References
TAC ME1081, TAC ME1082
Download: ML092430517 (3)

Text

Accession No. ML092430517 From:

Tam, Peter Sent:

Monday, August 31, 2009 3:54 PM To:

Gardocki, Stanley; 'Flentje, Fritzie' Cc:

Poole, Justin

Subject:

Point Beach - 9/3/09 Meeting on AFW Modifications (TAC ME1081, ME1082)

Steve Hale Fritzie Flentje Stan Gardocki of our Balance-of-Plant Branch has generated the following questions to be discussed in the 9/3/09 meeting. Please be sure you share these questions with technical personnel before the meeting.

1. Upon a loss of instrument air (2.5.4.5-6) AFW has a back up IA source that can last for four hours. Powers the mini flow recirc valve (fails closed on loss of IA), and the flow control valve to SG which fails open on loss of IA. Describe the operator action is required to control flow if IA is lost and back up runs out. Procedures? Communication?

2. DC supply, describe the DC component associated with the MDAFWP and how they are diverse from the TDAFWP

3. Describe how DC is diverse and still be used to isolate a faulted SG

4. U1 and U2 will be separate DC trains. Some re-powering of DC supplies will be necessary on the TDAFW pumps. Describe? (2.5.4.5-24)

5. States each pump systems will have two ways using opposite trained power to stop AFW flow (2.5.4.5-24) Describe?

6. Explanation of the power supply and instrumentation the operates each of the SW supply valves to each of the AFWPs and SSG

7. If SSG pumps are feeding the SGs and an accident occurs, the pumps trip off the bus, is there an automatic action to close the associated valves so as to not continue to feed a ruptured SG when the sw pumps start and the SG blows down?

8. Describe procedures and steps for operator actions to isolate AFW to faulted generator

9. What are AFW start logics on lo lo SG level

10. What are AFW starts on loss of 4.16 kv bus, is it breaker or voltages

11. Describe the AFW mod for local controls of AFW for decay heat removal following control room evacuation

12. Is the new AFW system exposed to HELB failures EPU

13. Mod will verify adequate cooling is provided to ensure operability of the MDAFW pumps and licensing basis of the PAB is met. (PAB is NSR) (2.5.4.5-25) Describe and new Tech Specs? The heat generated by the addition of these new AFW pumps and any impact on the primary auxiliary building ventilation system, VNPAB, will be addressed as part of the AFW system modification process. (2.7.5-4 )The VNPAB has one non-safety related, Non-QA function, which is to maintain the building within its design range of 65°F-85°F. Safety-related equipment in the PAB is not affected by a loss-of-HVAC for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> thus indicating that the ability to maintain an 85°F design temperature during normal operation is not critical.

14. Discuss Tech Spec if one steam supply is inop, and then the MDAFWP goes inop. The TSTF does not apply because they dont have 2 MDAFWPs, Should be something very conservative.

These questions do not constitute a Request for Additional Information at this time. You should discuss with the NRC staff regarding dispositioning these questions during the meeting.

Peter S. Tam Senior Project Manager (for Kewaunee and Monticello)

Plant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Tel. 301-415-1451 E-mail Properties Mail Envelope Properties ()

Subject:

Point Beach - 9/3/09 Meeting on AFW Modifications (TAC ME1081, ME1082)

Sent Date: 08/31/2009 3:36:31 PM Received Date: 08/31/2009 3:53:00 PM From: Tam, Peter Created By: Peter.Tam@nrc.gov Recipients:

Stanley.Gardocki@nrc.gov (Gardocki, Stanley)

Tracking Status: None Fritzie.Flentje@fpl.com ('Flentje, Fritzie')

Tracking Status: None Justin.Poole@nrc.gov (Poole, Justin)

Tracking Status: None Post Office:

Files Size Date & Time MESSAGE 21245 08/31/2009 Options Expiration Date:

Priority: olImportanceNormal ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received: