2. When the construction enterprise undertakes the deepening design of the ventilation and air conditioning engineering construction drawing, its deepening design document shall be confirmed by the original design unit.
3. Before the construction of ventilation and air conditioning engineering, the construction unit shall organize the design, construction and supervision units to make disclosure and joint examination of the design documents, and form a written record, which shall be signed and confirmed by all parties participating in the joint examination.
4. Before the construction of ventilation and air conditioning project, the construction unit shall prepare the construction organization design (scheme) of ventilation and air conditioning project, which shall be implemented after the technical director of the unit has passed the examination and the supervision (construction) unit has approved it. The construction unit shall carry out technical disclosure and necessary operation guidance training for the construction personnel of ventilation and air conditioning engineering.
5. Construction drawing changes involving ventilation and air conditioning engineering use effect and energy saving effect, need to be approved by the original design unit. This change should be reviewed by the original construction drawing design document review institution, and can be implemented only after going through the change procedures, and confirmed by the supervision and construction unit.
6. Before the system detection and testing, trial operation and debugging, the construction unit shall prepare the corresponding technical scheme, which shall be approved.
7. The new technologies, new processes, new materials and new equipment adopted in ventilation and air conditioning engineering shall be reviewed, appraised and put on record according to relevant regulations. Before construction, a special construction technical scheme shall be formulated for the new or first-time adopted construction technology.
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