The construction schedule plan is based on the construction scheme, according to the specified period and various resources supply conditions to determine the reasonable construction sequence, construction time and lap relationship of each process, usually expressed in the form of charts. It is the basis for formulating the resource requirement plan and preparing the construction

preparation plan, and the basis for controlling the construction schedule and completion deadline. A construction schedule in line with the actual, can make the construction process methodically.

The construction progress plan expressed in the form of charts reflects the whole construction process from the start to the completion of the clean room construction process, reflecting the cooperation between civil engineering, decoration, purification air conditioning, water, electricity, fire fighting and other professional work. The scientific preparation of the construction progress plan is conducive to the overall planning in the construction process, the reasonable arrangement of manpower and material resources, is conducive to the professional, various types of technical personnel clear goals, targeted, is conducive to the coordination of the cross types of work.

The preparation principle of clean room construction schedule:

(1) It should be prepared in strict accordance with the construction sequence and adapt to the established construction technical scheme.

(2) First arrange dusty operations and high-altitude operations, and do not allow the cross arrangement of dusty operations and dust-free operations.

(3) Attention should be paid to the protection of clean room decoration projects.

(4) The installation of the purification air conditioning unit should be able to cooperate with the "air blowing" of the clean room system in time.