coated preparation process.
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- open the top flue cover;
- erect the oven tube and ignite the oven tube with a torch (the ignition procedure is the same as the ignition);
- According to the oven heating curve requirements.
7.5.4.8 In the gas working area, a warning sign should be hung.
7.5.4.9 A gas leak automatic alarm device shall be installed in the duty room and work place where personnel are gathered in the gas working area. The alarm device should be in good condition and should be verified at least once every ten days.
7.5.4.10 The operators of the gas operation area should have knowledge of the on-site first aid of gas poisoning.
7.5.4.11 Gas workers should be familiar with the use of gas masks and oxygen breathing apparatus. Gas masks should be checked regularly to ensure they are in good condition.
7.5.4.12 When a gas leak is discovered, it shall be reported to the relevant personnel immediately; the relevant personnel shall immediately deal with it after receiving the report.
7.5.4.14 The top of the roasting plant's moving out span shall be provided with a foggy skylight.
7.5.4.15 When the rotary kiln is ignited, the gas pipeline system should be first steamed to remove the residual gas, and the exhaust fan is activated for 10 minutes, then the gas burner is ignited by the torch (first ignition, then open the valve); If you can't point it, you should find out the reason, and then wait 10 to 15 minutes later.
7.5.4.16 Gas burst test shall be carried out before ignition. If the test fails, it shall not be ignited.
7.5.4.17 The kiln should be equipped with a pedal, and the safety light (low pressure, explosion-proof) should be used in the kiln; when the kiln rotates, there should be no insiders; when repairing, you should apply for a work ticket.
7.5.4.18 When repairing bricks in the kiln, it should be played from the inside out and should be supervised.
7.5.5 Leaching 7.5.5.1 The leaching workshop shall be provided with a certain amount of antidote and anti-virus equipment, and shall be properly kept and regularly checked for effectiveness. Every employee should learn how to use antidote and anti-virus equipment and first aid measures.
7.5.5.3 When entering the toxic container such as the leaching tank for maintenance, the detoxification should first be discharged to the specified safety value, and the gas mask and protective equipment should be put on and under the supervision of the person.
7.5.6 Storage, use and management of drugs (agents) 7.5.6.1 Chemicals should be classified and stored according to their nature (very toxic, explosive, flammable, damp, light, etc.), liquids and Solids should be stored separately.
7.5.6.2 Flammable and explosive drugs should be kept away from fire sources and stored in low temperature and dry places.
7.5.6.3 Take the medicine from the large bottle. The remaining part should not be returned to the original bottle. The small bottle should be stored and labeled.
7.5.6.4 For flammable and foamy drugs, they should not be shaken vigorously in a closed condition to avoid explosion.
7.5.6.5 Drugs should be stored in an obvious label. Special signs should be given for toxic and explosive drugs. Labels should not be arbitrarily removed to avoid the risk of misuse of drugs.
7.5.6.6 For drugs that are unlabeled and of unknown nature, they should be tested and confirmed before they can be used.
7.5.6.7 Flammable, explosive or toxic drugs frequently used in the studio should be properly stored in the medicine cabinet, marked with the red label on the name of the drug, and marked with “flammable†and “explosive†"Poisonous" and other words.
7.5.6.8 Highly toxic drugs should be strictly managed and approved by the relevant departments for signature and limited use; after the use, the recipients should go through the formalities of returning to the library in person or hand over to the designated person.
7.5.6.9 For the use of drugs that are toxic, flammable, explosive, volatile, narcotic and pungent, the following provisions shall be observed:
——In advance, understand its chemical properties, methods of use and precautions, and master the method of operation;
——The opening of the bottle should be facing no one to prevent the product from collapsing and hurting people;
- for highly toxic, irritating and narcotic and volatile drugs, should be operated in a well-ventilated fume hood;
—— When using toxic or highly toxic liquid medicines, pipettes should be used, and the mouth should be taken directly without using the mouth;
- When heating or formulating flammable or explosive drugs, they should be carried out in a safe place;
——When using toxic and highly toxic drugs, the operation should be finished. The utensils should be rinsed off immediately and the test bench should be wiped clean.
7.5.6.10 When handling and using strong acid and alkali, the following provisions shall be observed:
——The strong acid and alkali in the barrel or altar should be carried by two people;
- use a dedicated shelf or vehicle for handling and should be placed securely and should not be shouldered, recited or carried by hand;
——The tools and materials used should be inspected before handling, and should not be used if damaged.
—— Labor protection products are fully worn; [next]
——When using altars, barrels of concentrated acid and concentrated alkali, it should not be poured directly, and the siphon method should be used to inject into the vessel;
——When heating concentrated acid and concentrated alkali, it should be carried out in a well-ventilated fume hood, and the operator should not approach;
—— When preparing the acid-base solution, the concentrated acid and concentrated alkali should be slowly poured into a good amount of water, and the water should not be poured into concentrated acid or concentrated alkali.
——If concentrated acid and concentrated alkali are splashed on the eyes or on the skin, they should be quickly dried with cotton yarn and rinsed with plenty of water. If it is serious, it should be sent to the hospital for emergency treatment.
7.6 Dewatering 7.6.1 Operation The filter should be kept evenly fed, and the distribution box and pipeline should be unblocked.
7.6.2 Safety devices shall be provided for the sidewalks in large internal filter vacuum filters.
7.6.3 Railings shall be provided for the bridges and up and down ladders leading to the center plate of the peripheral drive concentrator.
7.6.4 Check the central drive or switch chute ram of the peripheral drive concentrator at night, and it should be well lit and under the supervision of others.
7.6.5 The outer edge of the overflow tank of the thickener shall be at least 0.4 m above the ground; otherwise, safety railings shall be provided near the roadside.
7.6.6 Before the concentrator is shut down, the ore should be stopped and the slurry should continue to be output for a certain period of time; before returning to normal operation, care should be taken to prevent the concentrator from being overloaded.
7.6.7 Super-size, super-specific gravity minerals, various industrial wastes, etc., should not enter the slurry concentration tank.
7.6.8 The tailings slurry to be concentrated and not concentrated shall not be arbitrarily sent to the pumping station and the tailings pond unless it is required for accident handling.
7.6.9 The grids and baffle devices at the inlets of the concentrate tanks and the outlets of the overflow tanks, as well as the discharge pipes (grooves and trenches), which are prone to tailings deposits, should be washed and cleaned regularly.
8 Tailings facilities 8.1 Tailings transportation 8.1.1 Sand pumping stations (especially high-pressure sand pumping stations) should be equipped with necessary monitoring instruments, and volumetric sand pumping stations should be equipped with overpressure protection devices. Pump stations with higher hydrostatic pressure should be equipped with safety valves or waterproof hammers after the sand pump check valve.
8.1.2 Accident tailings ponds should be cleaned regularly and often have sufficient storage capacity. The accident tailings overflow shall not be arbitrarily arranged. If it is necessary to temporarily discharge, it shall be approved by the relevant department.
8.1.3 Check valves and other safety protection devices on the tailings conveying system of indirect series or long-distance direct series shall be inspected and maintained frequently to ensure good and effective.
8.1.4 The grille set in the mine silo and the water level indicating device installed in the silo should be cleaned and maintained frequently.
8.1.5 Tailings conveying pipes, troughs, ditches, canals and caves shall be fixed to patrol inspection and maintenance management to prevent accidents such as siltation, blockage, pipe bursting, shotcreting, leakage and collapse; It should be disposed of in time, and the discharged slurry should be properly disposed of.
8.1.7 In cold areas, the maintenance and management of pipes, gates and valves should be strengthened and anti-freezing measures should be taken.
8.2 Design 8.2.1 Tailings car tailings shall comply with the provisions of "beneficiation plant tailings facility design norms".
8.2.2 The construction and acceptance of the tailings pond and its ancillary facilities shall be carried out in accordance with the relevant construction acceptance specifications and design requirements.
8.2.3 The production management of tailings ponds shall comply with the provisions of the “Management Regulations for Metallurgical Mine Tailings Facilitiesâ€.
9.1.2 The following provisions shall be observed for rollover operations:
——Check and confirm the unmanned and unobstructed objects in and around the dumper and the mine car before you can roll over the mine;
- Reliable safety measures should be taken when overhauling the dumper (especially when working in a dumper or mine tank);
——The empty car should run smoothly and there should be a reliable stop device;
——With dump trucks for unloading, there should be a strong retaining wall. The height of the retaining wall should not be less than two-fifths of the diameter of the tire.
9.1.3 For the treatment of tank-type mining machine blockage and shed mine, the following provisions shall be observed:
——When the mine is mine, it should be in a safe position on one side of the equipment to prevent the ore from rolling out and hurting people;
——When the blasting method is used, it should be handled by a special person and strictly enforce the relevant provisions of GB 6722.
9.1.4 When checking the ore supply, ore position and troubleshooting, the safety belt should be fastened (the length is limited to the working point). It should not stand on the ore slope and should be guarded. The lower part should stop discharging. [next]
9.2 Belt conveyor 9.2.1 Belt conveyor transportation shall comply with the relevant provisions of GB/T 14784.
9.2.3 The distance between the corridor wall and the conveyor is usually not less than 1.0m on the pedestrian side and not less than 0.6m on the other side. When the slope of the sidewalk is greater than 7°, a step should be set.
9.2.4 Belt conveyors shall have corresponding measures to prevent reversal, tape tearing, rope breakage, broken belt, deviation and grooving, and shall have brake devices and devices for cleaning tape and rollers, on the line. There should be signals, electrical interlocks and parking devices.
9.2.5 The material conveyed by the belt conveyor shall not exceed 120 °C.
9.2.6 The operation of the belt conveyor shall comply with the following regulations:
——The personnel should not ride, cross or drill the belt conveyor, and the belt conveyor should not transport other materials than the specified materials;
——The ore should not be rubbed by hand from the running belt conveyor (except for hand-selected belts);
——The debris on the conveyor belt, transmission wheel and reversing wheel should be cleared in time; it should not be cleared under the running conveyor belt;
——The belt conveyor in operation should not be inspected, cleaned and oiled. The rotating parts such as the roller and the front and rear wheels should not be touched by hand.
9.2.7 Belt conveyors with unloading trolleys shall have a travel limit switch on their tracks.
9.2.8 Replace the fence, cleaner (scraper) and rollers, stop, cut off the power supply, and should be guarded by special personnel.
9.2.9 When the belt conveyor cannot be started or slipped, it should not be treated by pedaling, pushing or pressing the bar by hand.
9.3 Vehicle transportation 9.3.1 Vehicle transportation shall comply with the relevant provisions of GB 4387.
9.3.2 Motor vehicle drivers should pass the safety technical training assessment and be certified to work. Interns driving motor vehicles, operating signals, and driving operations should be carried out under the supervision of official values ​​and on-duty personnel.
9.3.3 crossing railway (or road) and in its construction (maintenance) in the vicinity, should inform the transport sector, and to take protective measures; the use of instruments and materials should not impede traffic safety.
9.3.4 Stations, turnouts, stockyards, loading and unloading lines and the import and export of buildings shall have good lighting facilities.
9.3.5 Mine cars should not be used.
9.3.6 Should not walk or stay on the railway, should not rob, rig and rest under the vehicle.
9.3.8 When loading and unloading, the driver should not extend the head and arms out of the cab and should not inspect the maintenance vehicle.
9.3.9 Driving on the factory floor and in the workshop shall follow the prescribed roads and shall not pass under conveyor belts, engineering scaffolding and low-hanging wires.
9.3.10 Should not be overweight, extra long, extra wide, and ultra-high shipment, the loaded items should be bundled securely. Trucks should not be mixed with passengers and cargo.
9.4 Lifting 9.4.1 The use and management of metal structures, main components, electrical equipment and safety guards of lifting machinery shall comply with the relevant provisions of GB/T 6067.
9.4.2 The operating personnel of the lifting machinery shall pass the safety technical training assessment and be certified to work.
9.4.3 Hoisting machinery shall be equipped with over-winding, overload, limit position limiter and start-up and accident signal devices, and safety interlock protection devices shall be provided.
9.4.4 The operating mechanism of the orbital crane shall have a travel limit switch and a buffer. There should be stops or posts at the end of the track. When there are more than two cranes running on the same track, anti-collision devices should be provided.
9.4.5 In areas where there is a possibility of a crane component colliding accident, the relevant personnel should be contacted in advance and monitored.
9.4.6 Operating cranes are subject to the following regulations:
——The smoke is too thick, the line of sight is unclear or the signal is unknown, and the operation should be stopped;
——The slanting crane should not be slanted, the object should be dragged, and the object buried in the ground and unidentified;
——The wire rope for lifting should be consistent with the fixed iron card specifications, and the number of iron cards used should be determined according to the lifting requirements;
- the object being lifted should not pass over the person;
- should not use the limit position limiter to park; [next]
——When the crane is working, a certain distance should be maintained between the hook and the pulley to prevent over-winding;
- more than one crane operation, the minimum horizontal distance of two adjacent protruding parts of the crane shall be not less than on the same track
- lifting the object should not be adjusted when the brake, the brake pad wear or abnormal wear than half should be replaced immediately;
- the lowest position when the crane hook, wire rope on the drum should be at least three times;
- Do not use electric disks instead of cranes.
9 . 4 . 7 Staff members should climb the crane at the designated location and should not walk along the track.
9 . 4 . The 8 bridge crane cab should be placed on the side of the non-conductive bare wire and set up a ladder to climb the cab. If it is placed on the same side of the conductive bare wire, a safe conductive sliding wire should be used, and a protective plate should be provided between the ladder leading to the crane and the walking platform and the sliding wire. The factory building is equipped with double-layer cranes, and the lower-level crane power supply sliding line should be equipped with protective devices along the length.
9 . 4 . 9 should not cross from one crane to another. Do not use one crane to bump another crane.
10 electrical safety
10 . 1 general provisions
10 . 1 . 1 The power plant of the beneficiation plant shall meet the requirements of GB 50070 and other relevant codes and regulations.
10 . 1 . 2 Electrical workers should undergo special safety technical training assessment and be certified to work.
10 . 1 . 3 Electrical workers should be proficient in electric shock emergency methods.
10 . 1 . 4 All electrical equipment and wiring should be clearly marked according to the degree of harm to people, protective nets and safety barriers.
10 . 1 . 5 Electrical workers should wear protective equipment and protective equipment when working. Repair and commissioning of electrical equipment and wiring shall be carried out by electrical operators.
10 . 1 . 6 The exposed parts of the electrical equipment that may be touched by the person shall be provided with a safety shield or a fence and a warning sign.
10 . 1 . 7 The power outage and power transmission of power supply equipment and lines shall strictly implement the operating ticket system.
10 . 1 . 8 In the operation of the power-off line, the power switch handle pulled down should be locked or specially guarded, and the signboard “ someone is working, no power transmission †should be hung; the electroscope should be used to verify that there is no electricity, and The grounding wire can be installed at each end of all possible incoming lines to operate.
10 . 1 . 9 There should be no heat source that damages electrical insulation or causes electrical fire near live conductors, equipment, transformers, and oil switches.
10 . 1 . 10 Steel tape measures and wire rulers with wire should not be used around live equipment.
10 . 1 . 11 fuses, fuses, fuses, thermal relays and other safety devices, should be checked before use, should not be replaced or substituted.
10 . 2 power supply, substation facilities
10 . 2 . 1 The power supply and distribution system of the plant area should be reduced as much as possible; the power distribution system of the same voltage should not exceed two levels.
10 . 2 . 2 Substation should have an independent lightning protection system and measures to prevent fire, moisture and small animals from entering the live parts.
10 . 2 . 3 The oil-immersed transformer room is of Class I fire resistance grade. It should be constructed of refractory materials. The door should be made of flame retardant material and should be opened outward.
10 . 2 . 4 The oil-immersed transformer room shall be provided with an appropriate oil storage pit. The pit shall be covered with pebbles, and the ground shall be inclined to the side of the pit; ventilation holes shall be provided below the wall of the oil-immersed transformer, and vent holes shall be provided on the wall or roof; ventilation holes Wire mesh should be provided for the venting holes.
10 . 2 . 5 The door of the transformer room should be locked and the sign of “ high voltage danger †should be hung outside. The outdoor transformer should be no less than
10 . 2 . 6 The switching operation shall be carried out by the person in charge of duty or the person in charge of the shift, and shall be executed by the respondent. The operation of the switching operation is completed by the operator. The operation should be performed by one person and one guardian; if in doubt, the report should be dispatched to the duty to find out the situation and then operate.
10 . 2 . After the 7 line trips, power transmission should not be forced; the dispatch should be reported immediately, and the user should be contacted to find out the cause and troubleshoot before sending power.
10 . 2 . 8 The outer casing of transformers and other transformer and distribution equipment shall be reliably grounded. For the low-voltage system that protects the zero connection, the neutral point of the low-voltage side of the transformer should be directly grounded; for the system that protects the ground, the neutral point should be grounded through the breakdown fuse.
10 . 2 . 9 The width of the operation and maintenance passages at the front, rear and ends of the power distribution cabinet (screen) of the high and low voltage distribution room shall meet the relevant provisions of GB 50053 .
10 . 2 . 10 length is greater than
10 . 3 power machinery control
10 . 3 . 1 The crushing equipment should be interlocked and started according to the direction of the reverse production process. [next]
10 . 3 . 2 The crusher and the ball mill can be pre-started without participating in the interlock, but if the parking is stopped due to an accident, the mining machine and other related equipment should be stopped immediately.
10 . 3 . 3 The motor should be provided with short circuit protection, overload protection and phase loss protection. Motors that are easily overloaded (such as thickeners) should be equipped with overload protection signals; high-voltage motors such as crushers and grinding machines should also have time-delay and low-voltage protection.
10 . 3 . 4 interlocked local operation of the belt conveyor exceeds the length
10 . 3 . 5 belt conveyor, emergency line pull switch should be set on the side.
10 . 3 . 6 Equipment that runs through the multi-layer operating platform should be able to stop at all levels; if the interlocking device is driving or the parking sequence is wrong, it should also be able to brake and automatically stop.
10 . 3 . 7 The device that starts the machine should be located at a place where the situation around the machine can be seen. The parking switch should be located near the machine; if the machine is not activated at the starting device, there should be a start warning signal (bell or indicator) ), and should be driven before the signal is allowed to drive.
10 . 3 . 8 Highly conductive, easy-to-fly minerals (such as graphite ) that are prone to short circuit in transmission systems and motors. Closed motors and starters should be used in the processing workshop.
10 . 3 . 9 If there is a gas or dust that is dangerous to explosion in the plant, an explosion-proof motor should be used.
10.4.3 For places with electric shock hazard, the lighting should use a safe voltage of 36V or less.
10.5 Lightning protection and grounding 10.5.1 The lightning protection design of the ore dressing building shall be in accordance with the requirements of the third type of lightning protection, and take corresponding measures according to the lightning activity, terrain and features of the location of the concentrator. .
10.5.2 For buildings, in addition to measures to prevent direct lightning strikes, measures to prevent high potentials from being introduced into various pipelines should also be considered. The protection of direct lightning strikes generally adopts key protection methods.
10.5.3 In order to prevent lightning strikes caused by high-potential introduction, the insulator legs and neutral wires of all phase conductors should be grounded at the low-voltage overhead line to the building branch line or directly at the incoming line. The insulator iron feet in the incoming line segment should be grounded, and the grounding resistance should be no more than 30Ω. In the light lightning activity area, only the insulator legs of the building entrance line can be grounded.
10.5.4 The metal frame or outer casing of the electrical equipment and equipment, and the metal sheath of the cable shall be reliably grounded, and the grounding resistance shall not exceed 2 Ω.
10.5.5 The grounding wire should be connected in parallel. The grounding wire of each electrical equipment should not be grounded in series.
10.5.6 Grounding should be repeated at the following locations:
——The zero line of the power receiving station of the low voltage distribution room cable with transformer;
- the neutral line of the power distribution box cable of the building;
——The zero line of the terminal at the terminal of the overhead line;
——The zero line of the entrance to each branch of the overhead trunk line.
Repeated grounding resistance should not exceed 10Ω.
10.5.7 The grounding resistance should be measured once a year, and the measurement should be carried out in the lowest water table in the region and the season with the driest climate. [next]
11 Fire prevention 11.1 The construction and large-scale equipment of the mineral processing plant shall be equipped with fire-fighting equipment and equipment in accordance with the relevant national fire protection laws and regulations and GBJ 16 regulations.
11.2 The fire resistance rating of the building should be reasonably selected according to the fire hazard of production, and corresponding fire prevention measures should be taken.
11.3 Factory buildings, warehouses, station houses and basements shall be provided with appropriate quantities of safety exports in accordance with relevant state regulations. The safe evacuation distance and the width of the stairs, walkways and doors shall comply with the fire protection regulations, and the safety evacuation doors shall open outwards.
11.4 Fire-fighting water piping systems and fire hydrants shall be provided in the factory, factory buildings and warehouses. The fire hydrants shall have sufficient water volume and water pressure.
11.5 The items in the warehouse should be stored in categories and fire-fighting measures should be taken according to different requirements.
11.6 For the use, storage and transportation of flammable and explosive materials, safety management regulations for inflammable and explosive materials shall be implemented.
11.7 In places with fire hazards, open flames should not be used; when an open flame must be used, the approval procedures should be handled in advance with the competent department and strict precautions should be taken before proceeding.
11.8 Fire-fighting equipment and fire-fighting tools should not be used for any purpose by any unit or individual.
11.9 Fire safety education and training should be conducted regularly for employees to use fire-fighting equipment.
12 Industrial Hygiene 12.1 Recruitment of new employees shall be subject to health inspection, and personnel not suitable for mineral processing in accordance with relevant state regulations shall not be employed.
12.2 Workers exposed to dust and toxic and hazardous substances should undergo regular health checks. According to the occupational disease range and diagnostic criteria prescribed by the Ministry of Health, the occupational disease identification and review should be carried out on the employees regularly, and the employee health records should be established. Physical examination and identification of occupational diseases or occupational contraindications, if the diagnosis is not suitable for the original work, should be promptly transferred.
12 . 3 The concentration of dust and toxic and hazardous substances in the air at the working place shall not exceed the provisions of the Industrial Hygiene Standard for Industrial Enterprises and shall be measured in accordance with relevant state regulations.
12 . 4 For dust-producing operations, comprehensive dust-proof measures such as closed dust removal, spray watering, and wet operation should be taken.
12 . 5 Dust, toxic and hazardous substances and workplaces with severe noise exceeding the standard should be provided with an observation room that is isolated from the working environment and has air conditioning and air purification facilities.
12 . 6 Plants that emit toxic and harmful gases, steam and a large amount of waste heat should be mechanically ventilated.
12 . 7 The noise of the workplace should not exceed 85dB ( A ); otherwise, comprehensive noise prevention measures should be taken.
12 . 8 Plant drinking water and sanitary water production, water source selection, water source sanitation protection and water quality standards, should comply with the relevant provisions of GB 5749 and "Industrial Enterprise Design Hygiene Standards".
Water quality inspection should be carried out once a month. Water quality should not be used as a source of drinking water.
12 . 9 The production workshop should have a drinking water station to provide timely drinking water for workers to meet sanitary standards. Personnel working outdoors should send a kettle that they carry with them.
12 . 10 The concentrator away from the hospital should have a health station or clinic, and be equipped with telephone, emergency medicine and stretcher.
12 . 11 should take measures to prevent heatstroke or freeze and avoid cold according to the characteristics of the climate.
12 . 12 radiation protection
12 . 12 . 1 Radiation management and protection of workplaces shall comply with the relevant provisions of GB 4792 and GB8703 ; concentrators with associated radioactive minerals (such as uranium and thorium ) shall abide by the relevant provisions of the Regulations on Radiation Protection of Uranium Mining and Metallurgy.
12 . 12 . 2 Personnel engaged in radioactive work shall undergo special safety technical training assessment and be certified to work.
12 . 12 . 3 The concentrator shall formulate methods for the use and management of radioactive sources and clarify the responsibilities of personnel at all levels.
12 . 12 . 4 The radioactive source used in the production of the concentrator shall be stored in the radioactive source library in a special container, and shall be kept by a special person to establish a file for the use of the radioactive source.
12 . 12 . 5 In the field of high-activity radioactive materials, it should be operated in isolation mode. In the workplace where radioactive hazards exist, the staff should be equipped with the necessary personal protective equipment and radiation monitoring equipment. Corresponding emergency measures and treatment methods should be formulated for accidents that may occur during the operation of the radioactive source.
12 . 12 . 6 In radioactive workplaces, effective measures should be taken to prevent unrelated personnel from entering.
12 . 12 . 7 The installation, disassembly and use of radioactive sources shall be carried out by a special person. Others shall not disassemble, repair or adjust the radiological device without authorization. It should be ensured that the radiation device with the interlock device is intact and the interlock device should not be removed without authorization. The radiation device with the interlocking device problem should be repaired before use.
12 . 12 . 8 Pregnancy, breastfeeding and unmarried female employees and employees under the age of 18 shall not be arranged to carry out radioactive source maintenance work.
12 . 12 . 9 Personnel engaged in radioactive source work shall establish a personal dose monitoring file, which shall be examined at least once a year, and shall be immediately examined in case of an emergency.
12 . 12 . 10 For radioactive waste, it should be disposed of in accordance with the national regulations on radioactive waste.
12 . 12 . 11 Protective equipment and work clothes after radiation shall be properly kept and disposed of as required.
12 . 12 . 12 After the radioactive source is used, it is detected by an instrument to ensure that the radioactive source is stored in a storage container.
12 . 12 . 13 The transportation of radioactive sources shall be carried out in accordance with the provisions of GB 11806 .
12 . 12 . 14 When transporting or temporarily not using the radioactive source (before inspection and disassembly), the gate should be placed in the closed position and locked.
12 . 12 . 15 When installing or disassembling the radioactive source, the safety gate should not be used to lift the whole source of the radio source to avoid damage to the safety control gate.
12 . 12 . 16 Repair the probe, avoid the radioactive device in the “ ray on †position; and avoid the probe window directly facing any part of the repairer; after work, apply soap to clean the exposed parts of the body.
12 . 12 . 17 The maintenance personnel who disassemble the Cs-137 source shall not exceed 8 hours in one month. The maintenance personnel who disassemble and decompose the 238Pu and 241Am sources shall not exceed 50 hours in one month.
12 . 12 . 18 Remove the radiation device, the radiation surface should be facing down, placed under the metal plate or in the open can, away from the activities of people
12 . 12 . 19 Once the probe window immersed in the slurry is broken, the probe should be immediately raised out of the slurry and shielded to prevent the water in the source box from leaking and leaking, causing the radioactive material to spread and pollute.
Mineral processing safety regulations (2)
- should the tube into the furnace ignition oven, reducing coal gas injection column (the temple);
7.5.4.13 The water seal cover of the roasting shaft furnace shall be firm, complete, complete and tightly closed, and personnel shall not rest or warm on it.
7.5.5.2 The leaching workshop shall be provided with ventilation and detoxification facilities and keep them in good condition.
8.1.6 metal pipe wall thickness should be checked periodically, and maintained, to prevent leakage of mine accidents.
9 Transportation and lifting 9.1 Mine silos and feeders 9.1.1 Surroundings of mine silos (except for entry and exit), protective railings shall be provided.
9.2.2 Belt conveyor operators should be trained in safety technology and certified to work.
9.3.7 When foggy days and dust concentration are large, the warning light should be turned on; when the line of sight is unclear, the vehicle should be decelerated; when cornering, ramping and picking up, it should not be overtaken. 2m When the two-layer crane is working at the same time, the lower layer shall obey the upper layer; 1.7m The fence or fence and keep a certain distance from the transformer. 7m The distribution room shall be provided with two outlets and shall be arranged at both ends of the distribution room; the length is greater than 60m When it is time to add an exit. 40m When there should be a start signal. 10.4.2 Step-down transformers For applications with double coils, autotransformers should not be used. The outer casing, core and secondary coil of the transformer should be grounded or connected to the security neutral. 2m outside. For the 238Pu and 241Am radioactive sources, the lead plug shall be used to shield the window, and the lead plug thickness shall not be less than 6mm Or thick 6mm The lead plate is used for container storage.
10.4 Factory lighting 10.4.1 The production workshop of the concentrator should have sufficient illumination. The illumination of artificial lighting should not be less than that specified in Table 1. Explosion-proof lamps should be used in the flammable and explosive sections.
Table 1 Illumination requirements for artificial lighting in the production workshop of the concentrator
Lighting location
Minimum illumination, 1x
Room, ladder, and profile above the middle mine bin
10
Room above the storage bin, fixed screen, dry mill, belt conveyor, sand pump
15
Vibrating screen, crusher, grinding machine, classifier, washing machine, belt conveyor transmission, pharmacy storage
20
Jig, shaker
25
Magnetic separator
30
Flotation machine, vacuum pump, blower
35
Laboratory, laboratory
50
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