It is suggested that the landlord study GB 150, GB 15 1 and TSG R0004-2009 "Safety Technical Supervision Regulations for Fixed Pressure Vessels" before learning the standards and regulations of your industry and company.

As for the assistant worker you mentioned, you don't need an exam. Need to fill in a resume, summarize the work of one year, and affix the seal of the unit, the competent personnel department and the personnel bureau. If you are in a large unit, your unit can evaluate it. It's easy.