Why include requirements on plate or coil quality when operating at a higher alternative MAOP?
All steel pipes are made from either plates or coils. If these steel plates or coils are of superior quality, then the pipe should also be of superior quality if properly rolled. Assuring quality requires that the steel mill that made the plate or coil to have an inspection and quality control program to limit variation and to improve the quality of its final product. 49 CFR 192.112 requires operators to verify that such a quality assurance program was in place and was followed at the steel mill and pipe rolling mill.
