ML100750424

From kanterella
Jump to navigation Jump to search
Email W/Internal Newsletter
ML100750424
Person / Time
Site: Crystal River Duke Energy icon.png
Issue date: 10/07/2009
From: Thomas Morrissey
Progress Energy Florida
To: Marvin Sykes
NRC/RGN-II/DRP/RPB3
References
FOIA/PA-2010-0010
Download: ML100750424 (3)


Text

Sykes, Marvin From: Morrissey, Thomas Sent: Wednesday, October 07, 2009 7:37 AM To: Sykes, Marvin

Subject:

FW: Emailing: 10.5.09.pdf Attachments: 10.5.09.pdf

Marvin, Attached internal communication regarding concrete crack etc. Please limit distribution of attached file Thanks Tom From: Morrissey, Thomas [1]

Sent: Wednesday, October 07, 2009 7:35 AM To: Morrissey, Thomas

Subject:

Emailing: 10.5.09.pdf 1

October 5, 2009 Crystal River 3 refueling outage newsletter Outage Update: A Message from the SOM -John D er While filling the fuel transfer canal last night, a leak of approximately 0.5 gpm was discovered Site Level HU on one of the four nuclear instrumentation (NI) covers and the fill activity was suspended.

Performance Events After review and discussion, we followed the operational decision making principles and decided to drain back down the refueling canal to repair the Goal: o leaking cover.

Actual: o While it is undesirable to return the Reactor Coolant System (RCS) level to reduced inventory conditions at the reactor vessel flange, it prevents the potential of experiencing significant RCS leakage while irra-OSHA diated fuel movement is in progress. Our nightshift exhibited great leadership and commitment to nu-Recordable Events clear safety by taking the necessary steps to secure the leak. Remember, safety is our top priority!

Goal: o All four of the NI cover gaskets were replaced to- The first gasket is replaced on one of f Actual: 1 day at 12:30 p.m. The new gaskets will take 24 the four Nuclear Instrumentation (NI) hours to cure, which will allow us to begin refilling covers.

the transfer canal tomorrow at 12:30 p.m. Critical path remains through core offload and we are now 5 shifts behind schedule. Don't get distracted Radiation by this setback and stay focused on completing your work safely and error-free. Continue to work the schedule and keep looking ahead.

Goal: From a nuclear safety perspective, we continue to be in the most risk significant portion of the out-

<=297 -rem age. The plant risk will remain YELLOW until the fuel transfer canal has been flooded up, which is n scheduled to be complete by 2:00 p.m. tomorrow afternoon. Please use caution, honor protected Actual: 25.343rem train signs and be aware of changing plant conditions throughout the next 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

Reactor Containment Concrete Update Production A message from Jon Franke, with Sargent & Lundy and MPR associates to Schedule : Site Vice President determine what this defect will have on the strength of the building. They have advanced

<= 85days In Saturday's Outage Times, we discussed an computer models of the structure and can indication we found showing a crack in the determine what affect, if any, these indica-Acttual: Reactor Building containment concrete. tions have on the ability to both transfer the As we have continued the hydro-demolition, steam generators over the containment wall Five Shifts _Bein~ we are getting a better understanding of the and to contain the effects of design basis nature of the crack. The degradation ap- events when at power.

pears to be limited to the very outer area of We believe these indications existed prior to the containment where the structural tendons our last Integrated Leak Test which success-are set. fully demonstrated the containment's ability Cracks in reactor containments are not uncom- to withstand design basis pressures.

mon in the nuclear industry. In general, our As always, we will place nuclear safety first containment strength is derived by the force and fully evaluate these indications before of those tendons inward holding the concrete using the wall for a structural member of the backing to the liner plcte. steam generator transfer system.

Initial review of the condition indicates good Additionally, before re-start the full impact of

  • asof13oo concrete for the area between the tendons the defect will be known on future plant and the liner plate. We are currently working operation.

Out & Ab out Matt Hinman, performs a test fit of the nozzle dams in one of the two new Once Through Steam Generators (OTSG).

CR3 Mechanical Instructor Kirk Correll takes pictures of a secon-dary services closed cycle pump at the 95 foot elevation of the Turbine Building on Monday. Correll will incorporate the photos into future pump training courses.

Off-site Parking Improvements A new core donut is getting ready to be installed into In an effort to reduce the amount of dust and debris at the off->

site parking lot, water trucks will wet down the area daily between 2 a.m.- 4 a.m. and 1:30 p.m. -3:30 p.m.

S~afety Corner i

the turbine generator.

A DZ Atlantic crew works on the heat exchanger piping.