On the “Slip-On” Buckle Arrestor for Offshore Pipelines

Abstract

If a pipeline buckles in the presence of sufficiently large external pressure a propagating buckle is initiated. The buckle propagates along the pipeline until it encounters a region of adverse conditions—low pressure or an arresting device. This paper describes a complete experimental analysis of the parametric dependence of the so-called “slip-on” arrestor. An empirical formula is derived for the efficiency of this arrestor. It was also found that quasi-static design criteria underestimate the arrestor efficiency under dynamic conditions. Any gap between the arrestor and the pipe greatly affects the efficiency.