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Intelligent Internals Asset ManagementYour Integrated Services Provider

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Leveraging our global experience and innovative methodologies, AREVA is at the forefront of industry initiatives to utilize risk-informed decision making to manage nuclear assets. As such, we have developed a Reactor Internals Asset Management approach that allows you to cost-eff ectively meet the challenges posed by the emergent baffl e-to-former bolt (BFB) degradation issue.

As the world leader in nuclear innovation, AREVA is the only vendor with a proven risk-based solution for robust asset management. Our analytical method incorporates deterministic models, a statistical model for bolt failure, award-winning inspection capabilities, and extensive replacement experience into a probabilistic framework. Using this road map,you can intelligently and pro-actively plan examination intervals, replacement bolt patterns, and outage duration to eff ectively control cost through end of life (EOL).

Delivering Intelligent Internals

Asset Managementfor Your Plant

AREVA’s Road Map for

BFB Evaluation

• AREVA has been at the forefront of risk-informed decision-making with our probabilistic methodology fi rst implemented in 2008

• AREVA has replaced over 8,700 internals bolts worldwide

• AREVA has inspected over 6,500 baffl e bolts, including recent MRP UT inspections

• AREVA’s methods for analysis and bolt qualifi cation can be performed independent of OEM input

Did you know...

AREVA is uniquely qualified to provide proven, effective solutions for managing bolt degradation

The only road map that enables you to proactively manage your asset

Probabilistic framework

Baffl e platespecifi c treatment of uncertainty in BFB degradation

ResultsCharacterization of risk profi le for BFB functionality as a function of time

Characterization of risk profi le to inform utility decisions for proactive planning: NDE, replacements

Deterministic models

Statistical model for bolt failure

Inspection

Replacement

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In an industry challenged by lower-priced electricity options, new approaches are needed to remain viable.This is what the Nuclear Promise Initiative is designed to deliver, and AREVA is staying ahead of the curve to meet this challenge for the BFB issue. With the analytical methodology for BFB re-examination intervals (WCAP-17096) being challenged, and repair campaigns slow and hard to economically justify, there is a clear need for risk-informed decision-making rather than more costly shotgun approaches. AREVA’s probabilistic analytical method is the only approach that is proven, accepted, and eff ective in delivering optimized bolt replacement patterns, re-examination intervals, and bolt examination sampling schemes.

• Structural analysis determines if a specifi c bolting pattern maintains the structural integrity of the core barrel assembly

• Once performed, minimum bolting patterns will be provided as part of AREVA’s Asset Management program.

Our Solution Enables Proactive

Asset Management

To support the probabilistic method, AREVA can perform the structural analysis necessary for OEM independence moving forward.

Criteria Deterministic Probabilistic

AREVA Experience X X

OEM Experience X

Approach Reactive Predictive

Solution Duration Short Term Long Term

Outage Impact Unpredictable Predictable

Cost High Moderate

Cumulative Unbounded Bounded

Upfl ow Modifi cation Likely Less Likely to None

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AREVA’s Award-Winning Vessel Inspection Technology Provides Proven Baffle Bolt Inspection Capability

• Extensive MRP-227 baffl e bolt examination experience in all plant designs, including 4-loop Westinghouse plants

• Industry-leading innovation — NEI TIP “Best of the Best” Awards fi ve consecutive years, including VT and UT examinations and our 2012 baffl e bolt exam and engineering analysis at Ginna

• Baffl e bolt UT and VT is performed by our proven, robust Submarine System for Inspection (SUSI)— Examine more than 20 bolts/hour— Remotely operated from outside containment

• Data acquired and digitally recorded

• Real-time analysis and dispositioning

Intelligent, Proven

Baffle Bolt Inspection

AREVA has the experience and the tools — ready to deploy for your outage

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• Replaced more bolts than any other vendor

• Recent bolt replacements include— Clevis bolts in 2013— Baffl e bolts in 2011

• Production rate— ~10 bolts per day with single mast— ~15 bolts per day with dual mast

• Less setup and teardown time than other baffl ebolt replacement technologies

• Improved bolt design for lower stress concentrations — no qualifi cation necessary

• Crimp cup locking mechanism — no welding required for installation

• Mast extension allows replacement withcore barrel in the vessel

• Compact tool heads do not requirehoists for removal

• Improved EDM fi lter system design for lower dose and water clarity

• Extensive EDM experience for reliableproduction rates— Eliminates risk of FME vs conventional machining— Eliminates machining issues with embrittled materials

AREVA Has Replaced Over

8,700 Internals BoltsOther technologies

Average 5 days to set up

Average 5 days teardown/demobilize

Machined chips in lower internals

Continuous polar crane utilization suspends outage activities

Mechanical tapping for contingency

AREVA’s approach

Average 1 day to set up

Average 3 days teardown/demobilize

EDM machining in lower internals leaves no highly radioactive debris

Intermittent polar crane utilization allows outage activities to continue

EDM tapping for contingency

EDM eliminates FME risks and provides proven, reliable performance at a lower cost.

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• Extensive relevant worldwide experience &proven technology

• The only proven probabilistic analytical method to predict bolt degradation behavior and reduce costs

• An alternative for structural analysis withoutOEM input

• Award-winning baffl e bolt UT and VT inspection techniques with proven production rates

• Repair tooling and processes based on existing bolt replacement equipment used in over 8,700 previous applications

• EDM process is used for all machining operations to avoid FME concerns

• Improved bolt design for lower stress concentrations

Why AREVA for Intelligent Internals

Asset Management

AREVA is committed to safely addressing baffle bolt degradation while minimizing operational risk and costs.

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AREVA in North America (AREVA Inc.) combines U.S. and Canadian leadership to supply high added-value products and services to support the operation of the commercial nuclear fl eet. Globally, AREVA is present throughout the entire nuclear cycle, from uranium mining to used fuel recycling, including nuclear reactor primary circuit design and fabrication, and operating fl eet engineering and services. AREVA is recognized by utilities around the world for its expertise, its skills in cutting-edge technologies, and its dedication to the highest level of safety. AREVA Inc.’s 4,100 employees are helping build tomorrow’s energy model: supplying ever safer,

cleaner and more economical energy to the greatest number of people.

us.areva.com

For more information, contact:

The AREVA Engineering Control CenterTel: 434.832.3722Email: EngineeringControlCenter@areva.com

The AREVA Outage Control CenterTel: 434.832.3777Email: OutageControlCenter@areva.com

Heshan GunawardaneEngineering Sales Manager — Installed Base ProjectsTel: 434.832.2304Email: Heshan.Gunawardane@areva.com

AREVA Inc. Corporate Headquarters7207 IBM Drive, Charlotte, NC 28262

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