Instruction on labor protection for a cupola operator

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OCCUPATIONAL SAFETY AND HEALTH
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Instructions on labor protection for the cupola operator. Full document

Occupational Safety and Health

Occupational Safety and Health / Standard instructions for labor protection

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1. General safety requirements

1.1. Personnel not younger than 18 years of age, who have passed a medical commission, special technical training, and have passed a safety knowledge test in the commission of the enterprise, may be allowed to work as a cupola operator. Admission to independent work is issued in writing in the briefing log at the workplace. Before being allowed to work, the drifter must undergo introductory and on-the-job briefings. Refresher training must take place at least once every 3 months.

Re-testing knowledge of safety rules is carried out once every 1 months.

1.2. The 6th category cupola operator must comply with:

rules of internal labor regulations;
fire protection regulations.

1.3. Know how to provide first aid for injuries.

1.4. Do not stand under a lifted load.

1.5. Do not go beyond the hazardous area fences.

1.6. The working parts of pneumatic tools (hammers, drills) must meet the following requirements:

the impact end of the tool must not be damaged;
the tail, as a result of spontaneous falling out, must correspond to the size of the sleeve;
the side edges of the tool should not have sharp edges.

1.7. It is forbidden to work with a defective tool.

1.8. In the process of work, the cupola operator must use the following PPE:

heat-resistant suit;
leather boots;
combined gloves;
goggles;
protective helmet.

1.9. At each facility, it is necessary to allocate a room or place for placing a first-aid kit with medicines, a stretcher, fixing splints and other means for providing first aid to the victims.

1.10. The cupola operator is responsible for violating the requirements of this instruction, the written instructions of the head of the workshop, the requirements of the work permit for the performance of work with increased danger.

2. Safety requirements before starting work

2.1. Put on the appropriate overalls, shoes and a protective helmet.

2.2. Get a targeted briefing on the safe conduct of work from the foreman.

2.3. Check and make sure that the tool is in full working order, that the nozzle of the hammer, sledgehammer, ax, shovel is correctly set, whether the metal is not split along the edges of the hammer, sledgehammer. Crowbars should be straight with drawn and pointed ends.

2.4. Inspect the condition of the cupola, centrifuge, mechanisms, fans, start-up equipment, instrumentation, signaling equipment.

2.5. Check the cleanliness of the workplace.

2.6. Ensure that guards, grounding and safety devices are in place and in good working order.

2.7. Check the correctness and sufficiency of lighting.

2.8. Check the operation of the supply and exhaust ventilation and turn it on.

2.9. Learn from the shift worker about the operation of the cupola, centrifuge, oil mist installation, changes in the technological process, the composition of the charge.

2.10. Check the condition of the lances, the operation of the cupola cooling system, the serviceability of spare centrifuges.

2.11. Check the serviceability of the ladders so that they are equipped with several supports. The design of the ladders must comply with the requirements of GOST 268.8-7-86.

2.12 If you find faults and malfunctions at the workplace, inform the foreman.

3. Safety requirements during work

3.1. The worker performs only the work assigned by the work manager.

3.2. Turn on the centrifuge only when it is installed in the blower ring, in order to avoid an explosion.

3.3. Before turning on the centrifuge, make sure that there are no people in the fiberization chamber and turn on the suction fan.

3.4. When punching a notch, use dry scrap, at least 1 m long and a serviceable sledgehammer.

3.5. Clean the tuyeres, remove deposits from the grid and observe the melt flowing out of the taphole, only in protective glasses.

3.6. Knocking out the "goat" should be carried out in compliance with all precautions, work with a serviceable tool, wear a protective shield and gloves.

3.7. Weaken a strong sintered hearth with a crowbar, destroying the bream along the edges, carefully monitor its condition. As soon as the bream starts to collapse, move to a safe place.

3.8. Pour the remaining melting residues with water, pour from the edges to the center to avoid pops and explosions.

3.9. When leaving the cupola on the coke tuyere, keep it open.

3.10. Before sealing the hearth under the cupola, close the opening with a shield.

3.11. When loading the cupola, open the hearth only with pneumatic shutters in the presence of the foreman.

3.12. Disconnect the pneumatic cylinders with a hook no less than 2 meters long.

3.13. The filling of the cooling hearth should be carried out with the hearth open, tuyeres and only through the loading window.

3.14. Knock down build-ups carefully, do not allow them to fall on the mesh of the fiber settling chamber.

3.15. When carrying out repair and cleaning work inside the cupola, work in a protective helmet with the installation of a protective shield

3.16. To avoid burnout when unloading the cupola, operate with the settling chamber fan turned on.

3.17. It is forbidden:

leave the workplace or transfer the cupola to another person who does not have the right to do so.
open the hearth using a sledgehammer, wedges without the special permission of the master;
keep the tuyeres closed when the cupola is stopped;
roll in and roll out the centrifuge during its operation;
knock down piles on the mesh at the fiber settling chamber;
pour water into tuyeres;
stand against the notch when punching it and do this work without protective devices;
wash down the cupola, walls, ceilings when the equipment is running;
touch broken electrical wires, change fusible links, carry out welding work;
store flammable liquids at the workplace;
allow overheating of the cooling water above 85 degrees;
work on faulty equipment, without guards, with faulty tools, with broken grounding.

4. Safety requirements in emergency situations

4.1. Water does not flow to cool the centrifuge rolls, drip tray

It is necessary to switch to feeding the water supply system p-1 kg per cm2 and then switch to a spare pump

4.2. Water is not supplied to replenish water in the correction tank.

In the event of a water shutdown, the cupola can operate for 4 hours.

4.3. Oil mist not working

Notify the compressor engineer and foreman. Go to work with another installation, and audit this one. Pour in oil.

4.4. With an increase in pressure in the cupola at a constant air flow.

Clean out the lance. Reduce the amount of additives. Replenish the idle galosh, pre-burn the cupola.

4.5. When water leaks from the cupola water jacket:

remove the blast into the cupola, turn off the fan;
close the tap hole and prevent air from entering the cupola;
close the valve for supplying water to the cupola;
make sure that the burning of coke in the cupola is over;
drain the water from the water jacket and proceed to unload it.

4.6. Stopping the water supply to auxiliary equipment:

connect emergency cooling from the basement;
with a lack of water in the cooling systems, it is necessary to remove the blast and remove the centrifuge from under the melt.

4.7. In the event of a power outage:

manually roll the centrifuge out from under the melt;
develop a hole

5. Safety requirements upon completion of work

clean up the workplace, remove unnecessary items and collect tools;
make entries in the shift log about malfunctions and malfunctions in the operation of equipment;
register the acceptance and delivery of the shift in a shift journal with a personal signature
in case of non-appearance of the shift, stay at the workplace overtime for no more than 2 hours before the arrival of the replacement.
take a shower.

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