本文件规定了熔合操作员的培训、评估和批准，旨在建立和保持其在根据ISO16486？6.它涵盖了对接熔合和电熔合焊接技术，并考虑了制造高质量熔合接头所需的理论和实践知识。

This document specifies the training, assessment and approval of fusion operators, with the aim of establishing and maintaining their competency in the construction of unplasticized polyamide (PA-U) piping systems for the supply of gaseous fuels in accordance with ISO？16486？6. It covers the butt fusion and electrofusion fusion jointing techniques and considers both the theoretical and practical knowledge necessary for making high-quality fusion joints.