Due to the increasing interest of the O&G industry on high grade tubulars working at high pressures, the assessment of operational conditions of Oil country Tubular Goods (OCTG) subjected to Sulfide Stress Cracking (SSC) is of particular importance.
AMPP adopts different test methods to evaluate material susceptibility to SSC in wet H2S environments, for which, Method D according to NACE TM0177 determines a quantitative value of material resistance using a Double Cantilever Beam (DCB) specimen that can be used for design and qualification purposes. This is a crack arrest type fracture mechanics test that can be traced back to the work of Heady in 1977 in which the material resistance to propagation of environmental cracks is expressed in terms of a critical stress intensity factor, KIssc.