The review opinions of the construction unit are generally concerned about: whether the types of occupational hazards and the severity of harmful consequences have been considered in the engineering design, whether there are corresponding measures to avoid or reduce the hazards, and whether the degree of hazards after taking measures is within an acceptable range.
If the degree of harm is acceptable, then this design is feasible. If it is not acceptable, then the design will be changed, and the protection investment involved may increase. If the investment increases a lot, perhaps the construction unit should consider whether to carry out the construction? Or change the construction plan, etc.