Pressure-Temperature Curves & RPV Material Surveillance
Reactor pressure vessel (RPV) material surveillance programs are required for all U.S. PWRs and BWRs. The results of these surveillance programs are used to develop pressure-temperature (P-T) limit curves that incorporate appropriate safety margins to protect against brittle fracture of RPVs, particularly in the irradiated beltline region. These P-T limit curves must be re-evaluated using new surveillance data in situations such as license renewal, power uprates, or when revised fluence calculations affect adjusted reference temperature values. Structural Integrity Associates, Inc. (SI), well-experienced in P-T curves and vessel integrity for both PWRs and BWRs, can provide utilities with technical support including materials reviews, P-T curve development, P-T limits reports (PTLRs), reactor vessel integrity/P-T limit curve training, vessel fluence evaluations via TransWare Enterprises, Inc., and many other areas.For information, please contact This e-mail address is being protected from spambots. You need JavaScript enabled to view it