Labor protection instructions for working on a stone crushing plant

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Labor protection instructions for working on a stone crushing plant

Occupational Safety and Health

Occupational Safety and Health / Standard instructions for labor protection

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Safe Operation

1. General requirements for labor protection

1.1. Persons at least 18 years of age who have passed a medical commission, trained in the prescribed manner, and who have been instructed at the workplace are allowed to work on servicing a stone crushing plant.

1.2. The workers serving the stone crushing plant must monitor the health of all the nodes of the mechanisms and promptly inform the master about the problems with the installations.

1.3. Workers servicing a stone crushing plant should know:

stone crushing plant;
malfunctions and defects of the equipment;
safe operating practices of the installation;
rules for providing first aid to victims;
internal labor regulations.

1.4. Do not touch electrical equipment and electrical wires (especially beware of bare or broken wires), do not remove guards and protective covers from live parts of the equipment.

1.5. Do not repair electrical faults yourself.

1.6. Perform only assigned work.

1.7. Work on a stone crushing plant is prohibited when:

absence of protective barriers;
loosening the keys on the gears or flywheel, as well as loosening the fixing bolts;
spring tension damage in auger crushers;
weakening of the crushing plates.

1.8. The receiving hopper must be fenced from 3 sides (from the side and from the side opposite to unloading) with flow railings 1 m high.

2. Labor protection requirements before starting work

2.1. Put on overalls and tuck them in so that they enclose the body sufficiently, and also do not have untucked ends and unbuttoned cuffs.

2.2. Clean the work area and passages around the unit.

2.3. Conduct:

serviceability of the drive, actuators of the installation and its starting equipment;
availability, serviceability and reliability of fixed protective guards on rotating parts of the equipment;
availability and reliability of grounding of the motor housing and starting apparatus;
serviceability of insulation of electric power wiring to the electric motor and starting device;
the presence of a thrust beam in front of the receiving hopper, which limits the movement of the dump truck;
the operation of sound and light alarms to warn of the approach of vehicles, to supply the rock mass to the bunker.

3. Labor protection requirements during work

3.1. When starting the stone crushing plant, you should first turn on the unloading conveyors, then the vibrating screen (cylindrical screen), crusher and unloading conveyor (feeder).

3.2. When unloading crushers, the loaded material must match the size of the crusher's feed opening.

3.3. It is necessary to sell material for crushing only after the engine picks up (working) speed.

3.4. The discharge gap should be adjusted after the crusher is completely stopped and cleaned of crushing material.

3.5. It is forbidden to push a stone into the feed opening by hand, as well as with a shovel or crowbar. For this purpose, special hooks and screws should be used, while it is forbidden to bend over the receiving hole or remove jammed pieces of stone with your hands.

3.6. When vehicles approach the bunker receiver, turn on the light and sound alarms, and the workers move aside at a distance of at least 2 meters, and before loading, make sure that there are no people in the bunker and on the feeders.

3.7. The operation of the screen before loading must be checked by idling.

During the operation of the screen, it is necessary to monitor the condition of the desired suspension and the tension of the drive belts. In case of abnormal operation of the screen, it is necessary to stop and eliminate the malfunction.

3.8. Descent of people into the bunker for cleaning and repair is allowed only after the conveyor and feeder are stopped, the voltage is removed from the electric motor, with the direct control of the foreman or shift supervisor.

When descending, it is necessary to use brackets or metal ladders and safety belts. For one worker in the bunker, two spotters upstairs.

4. Labor protection requirements in emergency situations

4.1. If equipment defects are found that pose a danger to human life and the integrity of the equipment, immediately stop work, if possible, disconnect the electrical equipment from the mains, take measures to eliminate the accident, report the incident to the foreman.

4.2. In emergency situations (strong vibration of the vibrating screen cradle, in case of disruption of the normal operation of the stone crusher), stop work, leave the danger zone, if necessary, disconnect the electrical equipment from the mains. If there is a danger of an accident, take measures to prevent it. Provide first aid to the injured and notify the work manager.

5. Labor protection requirements at the end of work

5.1. The stop of the stone crushing plant should be carried out only after the processing of all the loaded material.

5.2. After finishing work on processing the material, the worker must:

make sure that the installation is disconnected from the mains and lock the starting switch;
clean the surfaces and mechanisms of the stone crushing plant from dirt;
clean up the workplace, clear the aisles of foreign objects;
Report any problems to the master.

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