Hot Spot FprEN 1591- 4: 2012

By BVAA’s Technical Consultant, Peter Churm

FprEN 1591-4: 2012 “Flanges and their joints — Part 4: Qualification of personnel competency in the assembly of the bolted connections of critical service pressurized systems”

This document (FprEN 1591-4:2012) has been prepared by Technical Committee CEN/TC 74 “Flanges and their joints” and is currently submitted to the Formal Vote. It will supersede CEN/TS 1591-4:2007. Changes to the CEN/TS 1591-4: 2007 document can be seen in the comments and observation sheets.

This European Standard is applicable to the bolting technicians, and their supervisors, the responsible engineers, who disassemble, assemble and tighten the bolted connections of whatever shape of critical service pressurised systems where the failure of a connection would endanger personnel, plant or the environment.

A route for achieving competency in the skills required to safely and successfully disassemble, assemble and tighten pressurised bolted joints of any shape to a design bolt load using documented work instructions, thereby establishing a joint capable of maintaining a leak-free status throughout its’ service life, is given in the document.

This European Standard provides a modular training syllabus and an assessment process that can be used to determine the competency of personnel who disassemble, assemble and tighten bolted connections, whatever their shape, fitted to pressurised equipment containing a medium at any combination of temperature and pressure.

Published in Valve User Magazine Issue 24


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