Encyclopedia
Zaboina
Zaboina - damage arising as a result of dynamic interaction between the pipe surface and a solid object with sharp edges, without tangential movement relative to the pipe wall surface and noticeable residual local bending of the pipe body
Source: "Instruction on the Assessment of Defects in Pipes and Connecting Parts During Repair and Diagnostics of Main Gas Pipelines (with Amendment No. 1)"
(Approved and introduced into force by JSC "Gazprom" 18.11.2008)