The pressure equipments departments, were created in french nuclear power and fossil plants to improve the safety of the operators and the installations and to preserve the environment. They hold the responsability of the survey and the inspections of the pressure equipments (pipes and vessels) subject to the 15th march 2000 ministerial order.

        Among the degradations that can occur on these equipments the FAC must be particulary watched because of the gravity of the failure it can cause. FAC damage is not restricted to piping and piping components, it can occur on any components in the stream: LP and HP feedwater heaters, Desaerator, MSR, etc., which are not taken in account in predictive softwares such as BRT-CICEROTM.
    
       The goal of this paper is to present the FAC control strategies, used by the pressure equipments departments to control FAC on the pressure vessels of NPP and Fossil plants:

1. Criticity study of FAC degradation on specific parts of the pressure vessels;
2. Determination of the inspections periodicity;
3. Type of controls performed on the pressure vessels;
4. Actions taken by the pressure equipments departments when FAC is detected.

This paper includes some examples about pressure vessels from Chinon and Cordemais .

Independant company, founded in 2002 and based in Orleans (France).
Oakridge activities are mainly realized in the nuclear industry field.

satisfy its client needs by :

1. providing technical know-how ;
2. evaluating the nuclear installation safety ;
3. realizing some technical & reglementary studies ;
4. realizing some economical & faisability studies.
   

The company provides a wide range of skills :

1. through the technical jobs of the generalist engineering :mechanical, materials, metallurgy, thermic, thermohydraulic,command and control, electricity, electrotechnic...
2. through the technical jobs of the interactions of radiations with matters : neutronical, criticity, radioprotection...
3. through the project management jobs : business management, shedulation process, reporting, quality training, market analysis...

Oakridge participated in the elaboration of the inspection plans for several french nuclear plants and fossil plants (such as Belleville, Saint Laurent, Chinon, Chooz, Fessenheim, Chinon, Cordemais...).

Oakridge realised, on behalf of the SEPTEN and the CNEN/CAO, the study of the data migration from BRT-CICERO 2.2.b to BRT-CICERO 3.0.a for the NPP of Saint Alban.

1. Oakridge is involved in the EPR design project (France and Finland) on the behalf of SOFINEL:
2. Technical inputs and general data analysis;
3. Mechanical and thermal hydraulic systems engineering;
4. System instrumentation and control studies;
5. Control management and supplier follow up;
6. Radioprotection in the civil engineering department;