Legal basis: "The Chinese People's **** and the State Law on Prevention and Control of Occupational Diseases" Article 17 The new construction, expansion, reconstruction and technological transformation, technology introduction projects (hereinafter collectively referred to as the construction project) may produce occupational hazards, the construction unit in the feasibility study stage shall carry out occupational hazards pre-evaluation. Medical institution construction projects may produce radioactive occupational disease hazards, the construction unit shall submit to the health administrative department of radioactive occupational disease hazards pre-evaluation report. Health administrative department shall, within thirty days from the date of receipt of the pre-evaluation report, make an audit decision and notify the construction unit in writing. Not submitted a pre-evaluation report or pre-evaluation report without the consent of the health administrative department, shall not start construction. Occupational disease hazards pre-evaluation report shall evaluate the occupational disease hazards that may arise from the construction project and their impact on the workplace and the health of the workers, and determine the categories of hazards and occupational disease protection measures. Construction project occupational disease hazards classification and management by the State Council administrative department of health.