How to prevent the construction of the "big five"

How to prevent the construction of the "big five"
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According to the characteristics of the "five big damage" accident, serious to take the following precautions:
(1) operating the outer layer must have double fence, outside with dense mesh net shelf totally enclosed, interface seal.
(2) the operating layer scaffold board must spread, no probe plate, twisted board cannot use, had better use steel springboard, shelf spacing is not more than 20 cm from the wall.
(3) the steel pipe scaffold every four steps in the frame consists of a layer of safety net, to prevent falling objects.
(4) suffering from high blood pressure, heart disease, anemia, epilepsy, color blindness, is allowed to set up operations.
(5) scaffolder must by the professional security technology training, show certificates. Not allowed to climb up and down shelves, and are not allowed to be drunk.

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