1 scope
This standard specifies the provisions that coal preparation plants (including screening plants) should abide by when it comes to safety in production, operation and management.
this standard is applicable to all kinds of screening plants, coal preparation plants and coal water slurry plants.
2 normative citation documents
The clauses in the following documents become clauses of this standard through the citation of this standard. For dated reference documents, all subsequent revisions (excluding errata) or revisions are not applicable to this standard. However, parties who have reached an agreement according to this standard are encouraged to study whether the latest versions of these documents can be used. For undated reference documents, the latest edition is applicable to this standard.
Chinese coal law
Chinese coal production safety law
Chinese mine safety law
Chinese environmental protection law
Chinese air pollution prevention law
coal mine safety regulations
3 terms and definitions <
3.1 accident potential
can lead to the dangerous state of the accident, unsafe behavior of people and management defects.
3.2 command against rules in violation of regulations
the act of forcing employees to work in violation of national laws, regulations, rules and regulations or operating procedures.
3.3 illegal operation against rules
the behavior of employees who do not abide by rules and regulations and take risks in operation.
3.4 occupational diseases
diseases caused by occupational harmful factors, which are stipulated by the state in the form of laws and regulations and diagnosed by medical institutions designated by the state.
3.5 protective measures
Measures or means such as isolation, shielding, safe distance, personal protection, etc. taken to prevent employees from straying into dangerous areas or contacting with harmful substances during operation.
3.6 Hazard factors hagard
Factors that may cause personal injuries, occupational diseases, property losses and damage to the working environment.
3.7 moving sieve jig ROMJIG
A jig that supports the jig sieve plate of the bed of the material to be treated and can move up and down in the water.
3.8 numerical control air valve
is also called electrically controlled pneumatic air valve. Electronic numerical control device and solenoid valve are used to control the air inlet and exhaust of jig, and its frequency and characteristic curve can be adjusted at will.
3.9 flotation column columned pneumatic flo fate machine
There is no stirring impeller, and air enters the flotation equipment from the bottom of the cylindrical body through the aerator to mix with coal slurry to form mineralized foam.
3.1 flocculant
A drug that is added to a liquid with dispersed solids to aggregate fine particles to form flocs. It is suitable for all kinds of sewage purification treatment.
3.11 deep cone thickener
The height of the machine body is greater than the diameter, the upper part is a cylinder, and the lower part is an inverted conical clarification and concentration device with a small cone angle.
3.12 Closed water circuit of washing water
After the coal slurry is fully concentrated and clarified, the coal slurry is recovered in the factory and the clarified water is completely recycled.
3.13 tailings pond
is also called tailings yard. It is a structure for treating tail coal water.
3.14 pressure filter of pressure filter
The filter is installed in a special closed pressure container, and compressed air is charged to generate pressure difference on both sides of the filter medium for filtering.
3.15 coal water mixture CWM
It is a fluid fuel prepared by mixing coal with a certain particle size, water and a small amount of additives. Generally, 3% ~ 35% water and 1% additive are added.
3.16 fishing pit
also known as Bucket fishing pit. The water tank, which constitutes one of the washing water circulation systems, is continuously discharged with the dewatering bucket elevator, and the periphery or side of the water tank is provided with overflow weirs to allow clear water to flow out.
3.17 land reclamation by covering soil
the process of covering soil on the gangue layer or subsidence area to construct land. The coal gangue discharged from coal preparation plant fills the subsidence pit or discharges it to the ditch and depression, and then covers the soil to achieve the purpose of planting.
3.18 numerical control wireless shunting system dispatching car
The locomotive driver, shunting engineer and dispatcher in dispatching room use walkie-talkies to direct shunting operation. Replace the long-term use of light and flag signal shunting operation.
3.19 warning board
a sign to watch out for moving vehicles colliding with vehicles parked on the station line.
3.2 shunting winch dispatching winch
The coal preparation plant is used to dispatch vehicles under the coal pit and loading bin.
3.21 undervoltage release protection device low voltage protection
under-voltage protection device is a relay protection device that can automatically cut off the power supply when the power supply voltage is as low as the specified limit value.
3.22 dust dust
solid material particles with fine particle size enough to be suspended in the air.
4 General Provisions
4.1 In order to standardize the safe production of coal preparation plants, ensure the safety and health of workers, and prevent and reduce accidents, this regulation is formulated according to the Coal Law, the Safety Production Law, the Mine Safety Law and the Environmental Protection Law.
4.2 engaged in coal preparation production and coal preparation plant construction activities, must abide by this regulation.
4.3 the coal preparation plant must abide by the national laws, regulations, rules and regulations on safety production, as well as national standards, industry standards and technical specifications, and have legal conditions for safety production to realize safety production.
4.4 the coal preparation plant must establish and improve the responsibility system for production safety of leaders at all levels, the responsibility system for production safety of functional institutions, the responsibility system for production safety of post personnel, the system of rewards and punishments for production safety, the system of office meetings for production safety and other rules and regulations.
the director of the coal preparation plant is the first person responsible for the safety production in this plant. The chief engineer (or technical director) shall take technical responsibility for the safety work of the factory. The heads of various functional departments are responsible for the safety work within their own scope. The workshop director and team leader are directly responsible for the safety work within their jurisdiction.
the director (manager) and mine manager of the Mining Bureau (group company) must supervise the safety production of the coal preparation plant, implement the safety investment, and bear relevant responsibilities for the safety production of the coal preparation plant.
4.5 the coal preparation plant must set up a safety production management organization, equipped with safety production personnel and equipment to meet the needs of the work.
4.6 coal preparation plant must implement safety target management and decompose indicators layer by layer. Safety in production must be included in the economic contract responsibility, and regular inspection and assessment.
4.7 The coal preparation plant must regularly organize safety inspection, and the problems found in the inspection shall be dealt with immediately; If it cannot be handled, it shall promptly report to the relevant person in charge of the unit; The relevant person in charge shall organize the functional institutions to formulate safety measures and make rectification within a time limit.
4.8 coal preparation plant must prepare safety technology development plan and safety technical measures plan at the same time as preparing long-term development plan and annual production and construction plan. The expenses required for safety technical measures must be included in the enterprise's financial and supply plans and shall not be used for other purposes.
4.9 the design of new construction, reconstruction and expansion projects must comply with the provisions of this regulation. Designs that do not meet the requirements of safety production and labor protection shall not be approved; Projects that do not meet the design requirements shall not be accepted and put into production.
4.1 The coal preparation plant must prepare annual plans for disaster prevention and treatment such as flood control, fire prevention, lightning protection, explosion prevention and freezing prevention, and organize their implementation.
4.11 the trade union shall organize employees to participate in the democratic management and supervision of the work safety of the unit according to law, and safeguard the legitimate rights and interests of employees in the work safety.
4.12 after an accident in a coal preparation plant, the mine manager (mine coal preparation plant) and the director of the coal preparation plant must immediately take measures to organize rescue and report it in a timely and truthful manner according to relevant regulations.
5 industrial plant and workplace
5.1 industrial plant
5.1.1 carriageways, sidewalks and rescue lines in the plant should be smooth and smooth, and there should be sufficient lighting at night. At the intersection of roads and tracks, there must be obvious and unified traffic signs, signal devices or pole dropping.
5.1.2 pits, wells, trenches and pools required for production must be provided with fixed cover plates or fences. Warning signs must be set at dangerous places. Warning red lights must be set at night.
5.1.3 buildings must be solid and safe. The factory building structure shall be free from inclination, crack, weathering and collapse.
5.2 Handrails (height 15cm) must be added to the lifting ports, large and small holes, stairs, platforms and walking bridges in the workplace
5.2.1. At the entrance and exit, railings should be easy to disassemble and can be restored in time after use. It is forbidden to throw things down from a height.
the covers of wells, holes and ditches in the factory building must be flush with the ground. When it is really necessary to punch holes in the floor due to installation and maintenance, it must be examined and approved by the relevant technical departments before construction. After the completion of construction, it should be restored to its original state.
5.2.2 cables and pipes shall not be located on the floor where people often pass. The height of chutes, pipes and cables suspended in the workshop shall not be less than 2m.
5.2.3 The width of the main passage in the factory building shall not be less than 1.5m, and the width of the secondary passage shall not be less than .7m. Where the machine is crossed, a bridge or a platform should be set up. The road surface should be non-slip.
5.2.4 the light in the workplace should be sufficient, and the lighting parts should not be covered. Lighting of passages, corridors and workplaces must meet the operating requirements.
5.2.5 during the freezing period, outdoor pipes should be bandaged. Dumpers should be added with antifreeze. Frozen workplaces should be paved with anti-skid materials. The ice slip of high-rise buildings should be removed or covered and protected at pedestrian walkways.
5.2.6 reliable protective devices must be installed for the transmission parts of various equipment. The mesh of the mesh protection device shall not be greater than 5 mm× 5 mm. The selection of various transmission belts must meet the technical requirements, and the installation tightness is moderate.
5.2.7 if the equipment fails in operation, it must be stopped for treatment. When overhauling equipment or entering the machine to clean up sundries, the system of power failure and listing must be strictly implemented, and special personnel shall be assigned for supervision.
5.2.8 when cleaning the workplace, electrical equipment, cables, lighting, signal lines and transmission parts of equipment shall not be washed with water. Do not pour water on the bearing bush to cool down.
5.2.9 it is forbidden for anyone to cross the running equipment, conveyor belt, wire rope and chain. Pedestrians crossing the railway should take the safety lane or the safety bridge. When it is really necessary to cross the railway because of work, you must do "one stop, two looks, three passes". It is forbidden to climb, drill or pass between two cars.
5.2.1 operators must wear labor protection articles according to regulations. Long hair should be coiled in a hat. It is forbidden to wear skirts, shorts, scarves, high heels, slippers and barefoot in the field.
Safety helmet must be worn when the equipment is overhauled, hoisted or enters the bottom of the equipment and the machine to clean up sundries, and when working in other low and narrow workplaces.
5.3 Fire prevention, waterproof, explosion-proof and lightning protection
5.3.1 Factory, production workshop and warehouse must be equipped with necessary fire-fighting equipment and facilities. Drying, flotation, dry separation, raw coal preparation workshop and all kinds of coal bunker, grease warehouse, oxygen warehouse, garage, machine garage, power distribution room, centralized control room and other key fire prevention areas must be equipped with a corresponding number of fire hydrants, hoses, fire extinguishers, sand boxes and other fire fighting equipment, equipment and facilities. Fire fighting equipment and equipment must be managed by special personnel, and checked and replaced regularly.
all units shall set up voluntary fire brigades or voluntary firemen for the masses as required.
5.3.2 warehouses storing inflammable and explosive articles must meet the requirements of safety, explosion prevention and fire prevention. It is forbidden to store inflammable and explosive articles in the workplace. A small amount of lubricating oil, daily grease and oil gun must be stored in a special isolation room.
5.3.3 open flames and smoking are prohibited in key fire prevention areas. When electric and gas welding is really necessary for maintenance or other work, it must be approved by the fire department and necessary preventive measures must be taken before construction.
5.3.4 coal bunker, raw coal preparation, dry separation, drying workshop and other places with relatively concentrated coal dust must comply with the following provisions:
a) regularly clean the ground and equipment to prevent coal dust accumulation.
b) electrical equipment must be explosion-proof or explosion-proof measures must be taken.
c) Do not work with naked flame (in special circumstances, relevant procedures must be handled) and smoke.
d) the coal dust content in the air shall not exceed 1mg/m3.
5.3.5 Coal bunkers with large gas volume (raw coal bunker, clean coal bunker and buffer bunker) and rooms and corridors connected with them must abide by the following provisions:
a) Establish a three-shift patrol inspection system and draw up inspection charts.
b) The coal bunker is provided with a gas discharge port higher than the roof.
c) use electromechanical equipment and lighting that meet explosion-proof requirements.
d) When the Nevas concentration of the coal bunker reaches 1.5%, the electrical equipment within 2m nearby will stop running immediately.
e) When the Nevas concentration in rooms and corridors reaches .5%, all non-intrinsically safe power supplies (including lighting power supplies) shall be cut off immediately.
5.3.6 it is forbidden for anyone to bring inflammable and explosive materials into the workshop or mix them with coal. Once the coal is found to be mixed with detonators and explosives, it must be carefully taken out immediately and sent to the relevant departments for treatment.
5.3.7 underground pump rooms, underground corridors and underground buildings must be equipped with water collecting tanks and corresponding drainage pumps. The drainage capacity of the drainage pump must exceed 2% of the maximum water inflow in rainy season.
5.3.8 drainage ditches should be dug around underground coal bunkers and other buildings, and kept smooth.
5.3.9 lightning protection devices must be installed in high-rise buildings of coal preparation plants and other buildings and facilities that need to be protected from lightning strikes. Lightning protection devices must be inspected and determined regularly.
5.3.1 tank of flotation reagent storehouse