It is required that, based on the plane where the operator's operating position is located, all dangerous components and parts such as transmission belt, rotating shaft, transmission chain, coupling, pulley, gear, flywheel, sprocket, chain saw and dangerous components with a height of less than 2m must be provided with protective devices.
Requirements for protective devices:
A, firm installation, reliable performance, and sufficient strength and rigidity;
B, suitable for the operating conditions of machinery and equipment, and does not interfere with production and operation;
C, durable, does not affect the adjustment, maintenance, lubrication and inspection of equipment. ;
D, the protective device itself should not cause harm to the operator;
E. When the machine is abnormal, the protective device should have the function of preventing danger;
F, the electrical, electronic and mechanical components of automatic protection device require accurate action and stable performance, and there are methods to test whether the line performance is reliable.
The design of mechanical equipment must consider the convenience of inspection and maintenance. When necessary, the equipment shall be provided with special inspection and maintenance tools or devices.
(3) In order to prevent the running machinery, equipment or parts from exceeding the limit position, reliable limit devices shall be provided.
(4) Mechanical equipment shall be equipped with reliable braking devices to ensure effective braking when approaching danger.
Extended data
1. The external safety protection distance of production devices and storage facilities involving "two emphases and one major" does not meet the requirements of national standards.
2. The devices involved in the key supervision of hazardous chemicals process have not realized automatic control, the system has not realized emergency stop function, and the equipped automatic control system and emergency stop system have not been put into use.
3. The emergency shutdown function of hazardous chemicals tank farm, which constitutes a primary and secondary major hazard source, has not been realized; There is no independent safety instrument system in the hazardous chemicals tank farm involving toxic gas, liquefied gas and highly toxic liquid.
4. The side of the control room or cabinet room facing the equipment with fire and explosion hazards does not meet the requirements of the national fire and explosion protection standards.
5. Use the processes and equipment listed in the Catalogue of Processes and Equipment for Eliminating Backward Safety Technologies.
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