The invention belongs to a
prefabrication process, and particularly relates to a
nuclear power carbon steel small
pipe prefabrication process and an
assembly line. The invention discloses a
nuclear power carbon steel small
pipe prefabrication process. The
nuclear power carbon steel small
pipe prefabrication process comprises the following steps of S1, material receiving, S2, material codes, needing to trace items, of prefabricated materials, S3,
elbow prefabrication, S4,
pipe fitting polishing, S5,
assembly welding, S6, pipeline marking, S7, detection, S8, surface treatment and S9, pipe section warehousing and ex-warehousing. The method has the remarkable effects that 1) the work type
subdivision of the workshop is defined, so that the personnel structure is reasonably matched; secondly, the
layout of a workshop is improved, the process spacing is adjusted, and secondary carrying can be avoided by arranging a flat car; 3) a traffic light
system is arranged, so that the quality development progress can be clearly understood; (4) 30 persons are needed in a small workshop before improvement, only 23 persons are needed after improvement, the number of the persons is reduced by 7, and the number of the persons is reduced by 23.33%; the workshop efficiency is not 17.44 inches per person per day before improvement, the workshop efficiency is not 41.44 inches per person per filling after improvement, and the efficiency is obviously improved by 137.61%.