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Permanent Canal Seal Plate

Outage Performance Solutions

Permanent Canal Seal Plate

Improve plant performance

AREVA’s Permanent Canal Seal (PCS) eliminates potential canal seal leakage associated with current temporary seal designs mitigating reactor vessel erosion / corrosion issues, while improving safety, human performance, and schedule.

AREVA also offers a permanent solution for wide and narrow annulus refuel canal — to reactor vessel temporary seals. Our PCS eliminates the risk associated with temporary seals, and may also mitigate nuclear instrumentation and reactor vessel nozzle access cover leakage as well.

PCS enhances personnel safety by:

  • Eliminating handling of temporary canal seal
  • Eliminating open areas between the vessel and canal floor when canal seal is not installed

PCS improves human performance defenses by:

  • Reducing the need for recovery plans and outage plan interruptions experienced when a temporary canal seal leaks
  • Simplifying processes
  • Eliminating the potential for temporary seal leakage masking loss of Reactor Coolant System (RCS) inventory

PCS simplifies the process by:

  • Reducing the complexity of an outage activity
  • Removing a task requiring technical expertise
  • Reducing the amount of fasteners, improving FME

PCS reduces schedule by:

  • Providing outage schedule predictability
  • Eliminating polar crane picks for temporary seal plate installation and removal
  • Eliminating temporary canal seal installation and testing
  • Allowing earlier stud removal setup
  • Allowing parallel RV Head removal activities

Highlights of the AREVA Repair Process

• Thermal Sleeve Removal (If Applicable)

• Roll Nozzle in Repair Region

• Machine Weld Prep & PT Weld Area

• Perform Ambient Temperature Temper Bead Structural Weld

• Prepare Welded Surface For NDE

• Perform Post-Repair UT & PT

• Remediate Rolled and Repaired Areas

• Install Replacement Thermal Sleeve (If Required)

14 Successful Implementations

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Contact Us

Lisa Hawkins
Business Development Manager, CR&R
Tel: 434.832.2858