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随着国民经济的快速发展,能源需求的增长及能源结构的调整,我国油气长输管道敷设量与日剧增,与之配套的站场建设也随着增加,管道建设由于管径、壁厚相对固定,管径、壁厚变化小,便于现场采用焊口数量直接核算劳动定额,焊口数量比较直观,由于站场工艺复杂,材质、管径、壁厚变化较大,单一凭借焊口数量考核操作工人劳动定额不够合理,如果对各种管径分别对工人考核劳动定额较为繁琐,不利于现场管理,并且对整个工艺站场焊口工作量和劳务分包计算较为困难,如何准确控制焊接当量尤为重要,进而采用国外达因数乘以焊口数量考核,完全做到焊接工作量事先控制、生产组织和焊接过程中的日焊接量控制。
With the rapid development of the national economy, the growth of energy demand and the adjustment of energy structure, the amount of oil and gas pipelines laid on the pipeline has increased rapidly with the increase of the number of stations in the country. Pipeline construction has been expanded due to pipe diameter and wall thickness Relatively fixed, diameter, wall thickness changes small, easy to use on-site direct calculation of the number of welding mouth labor quota, the number of welding mouth more intuitive, due to complex process station, material, diameter, wall thickness changes, The labor quota of the assessment workers is not reasonable enough. If the labor quotas of workers are appraised by different pipe diameters, it is not tedious to manage the work quotas, and it is difficult to calculate the welding work load and labor subsidence of the entire craft station. How to control the welding precisely Equivalent is particularly important, and then multiplied by the number of welding up to the number of tests abroad, fully prior to welding workload control, production and welding organization in the welding process control.