Media Center

It is difficult to identify the low flaw tolerance locations in nuclear power plant (NPP) systems.


AREVA NP’s Leak-before-break Analysis (LBBA) uses advanced numerical methods to find leading locations and to assess the propagation of uncertainties by means of probabilistic methods and margin estimation.
 The LBBA is based upon charpy V-notch impact and tensile testing for determination of critical crack size in ductile materials, sub-critical crack growth and leak rates.
 

Your benefits

  • Reduces risk at leading locations for which break-before-leak can not be excluded
  • No J-R curves are required for this screening avoiding time consuming assessment of each location 
     

Interested in Leak-before-break Analysis?

AREVA NP Germany