GENERAL PRECAUTIONS Gas and electric cutting and welding operations are important adjuncts to petroleum operations and require a high degree of skill. Personnel engaged in these operations should be well qualified and properly instructed to ensure that they will be safety conscious and have a working knowledge of the duties they are to perform. as well as a thorough understanding of the potential hazards to be guarded against. In all welding and cutting operations. The welder and other personnel related to the Job should be briefed on the safety aspects of their specific jobs before any work is started.