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Instructions on labor protection during the maintenance and technical operation of aspiration installations. Full Document

Occupational Safety and Health / Standard instructions for labor protection

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Safe Operation

1. General safety requirements.

1.1. Persons at least 18 years of age who have previously passed a medical examination, as well as an introductory safety briefing and briefing at the workplace, who have studied this manual and trained in safe working methods at the workplace during the first 12-15 shifts under the guidance of an experienced worker, are allowed to service the suction units. with work experience of at least 3 years, having access to independent work after the internship, certified in TB, having a certificate in TB.

1.2. The employee is obliged to comply with the internal labor regulations of the plant, to exclude the use of alcoholic, narcotic and toxic drugs before work and during work. Smoking is allowed only in specially designated areas, outside industrial buildings and structures. The employee must know and comply with the safety requirements when using the elevator. When walking on stairs, hold on to the railing. Observe safety precautions while on the territory of the plant.

1.3. During the maintenance of aspiration units, the employee may be exposed to dangerous and harmful factors:

• rotating parts;
• drive;
• electric current, static electricity;
• the possibility of an explosion or fire;
• increased dustiness;
• increased vibration;
• insufficient illumination of the workplace.

1.4. According to the standard industry standards for the free issuance of overalls and personal protective equipment (PPE), an employee servicing aspiration plants is provided with: a cotton suit, leather boots, a cotton cotton jacket.

1.5. To ensure fire and explosion safety, the employee is obliged to monitor the condition of the equipment, the heating temperature of the bearings, the serviceability of guards, alarms, interlocks and other devices, protective grounding, protection against static electricity.

If additional lighting is required, portable lighting with a voltage not exceeding 42 V can be used.

Systematically carry out external and internal cleaning of the surface of air ducts, dust collectors, a fan and other units of aspiration installations from settled dust.

Dust collectors must be painted, they must not have protrusions and burrs that could injure maintenance personnel.

1.6. The employee is obliged to inform the shift foreman or shop manager about each accident, keeping, if possible, the situation at the workplace and the condition of the equipment as it was at the time of the accident, if this does not endanger the health and life of others and does not lead to an accident.

1.7. The employee is obliged:

• be able to provide first aid - make artificial respiration, stop bleeding;
• comply with fire safety requirements, know the procedure in case of fire, be able to use primary fire extinguishing means;
• know and follow the rules of personal hygiene, properly use overalls and PPE.

1.8. The employee is responsible for violation of the requirements of this instruction in accordance with the procedure established by the Internal Labor Regulations of the plant and the current legislation.

2. Safety requirements before starting work

2.1. When starting work, the employee is obliged to put on overalls, carefully tuck them in, avoiding hanging ends, and remove the hair under the headgear.

2.2. To get acquainted with the shifter about the operation of all technological, transport and aspiration equipment, malfunctions identified during operation and what measures were taken to eliminate them.

2.3. Before switching on technological routes, check:

• the presence of fences and the reliability of their fastening at the installation sites;
• serviceability of grounding means;
• blocking devices;
• fan mount, el. engine;
• serviceability of air ducts, dust separators
• external inspection serviceability of electrical equipment and wires, signaling means;
• whether equipment is being repaired.

2.4. In cases of malfunctions, inform the shift foreman and act on his instructions.

2.5. Warn workers about the start-up of the equipment with a warning signal and loud-speaking communication.

2.6. The inclusion of aspiration units is carried out in the following order:

1) dust separator sluice;

2) fan;

3) production equipment.

Shutdown in reverse order.

2.7. Electric motors of drives of aspiration installations should be switched on ahead of time by 15-20 seconds. before turning on the technological equipment, and stop 20-30 seconds after stopping.

2.8. Comply with industrial hygiene requirements at the workplace.

3. Safety requirements during work

3.1. Fan maintenance:

• when the fan is running, control:
• no vibration of the impeller;
• condition of the fan casing and tightness;
• bearing heating temperature (not more than 60o);
• belt tension and completeness;
• fastening of all bolted connections;
• condition of protective equipment;
• the presence of lubrication in the bearing assembly;
• after installation, repair or replacement of pulleys, fans are put into operation for verification in the presence of a technical manager (shop manager, chief mechanic) in compliance with safety precautions;
• fans are subject to current repairs 2 times a year and major repairs 1 time in 2 years;
• during repairs, the fan must be turned off in the RP and a poster "Do not turn it on! People are working" should be posted.

3.2. Servicing battery cyclones 4BTsSh:

• battery installations do not allow: dents or protrusions welding of the walls of the cyclones with an overlap against the air flow. Gaskets of flange connections must not protrude into the internal section;
• inspection hatches must be closed during operation of the aspiration system;
• clean the crosses of the inlet pipe from fibrous particles and dust once every 1-10 days;
• dust and other sediments from battery cyclones are continuously removed by a sluice;
• when the fan is running and the sluice valve is running, it is impossible to clean with wire through the hatch in order to prevent the wire from being caught by the sluice rotor;
• battery cyclones are subject to current repairs 3 times a year, capital - 1 time in 2 years.

3.3. Maintenance of RCIE filters:

• maintenance and repair of the drive mechanism for blowing and shaking the suction filter sleeves during the operation of the mechanism is not allowed;
• conduct general monitoring of the filter operation on a daily basis;
• during filter operation, control:
• operation of the back blowing mechanism and shaking of the sleeves;
• tightness of the manhole cover;
• the operation of the sluice gate and the removal of dust;
• when inspecting the filter, check:
• tightness of fastening sleeves;
• the fabric of the sleeves should not have damage and breakdowns in the places of fastening;
• the filter sleeves are suspended and pulled so that when shaken, they do not break off the nozzles and do not tear. It is not allowed to operate the filter with damaged sleeves or an incomplete set of them;
• it is forbidden to open the hatch of the suction filter and clean it during operation of the suction unit.

3.4. Maintenance of sluice gates.

• sluice gates must be airtight and rotate freely at a speed of 15-40 rpm;
• during rotation of the section, the impellers of the gate should pass by the purge plugs without product;
• end caps in the valve body must be installed with a tight fit;
• monitor the presence of lubrication in the bearing unit (heating not more than 60°C);
• glands under the end caps are pressed against the impeller without hindering its rotation;
• it is forbidden to clean the sluice gate with a wire through the hatch when the gate is in operation.

3.5. Duct maintenance:

• joints and connections of air ducts must be tight, connected using rubber gaskets;
• Worn sections of air ducts are subject to repair or replacement;
• hatches for cleaning should be installed on horizontal sections at a distance of 3-4 meters, cleaning should be carried out at least 1 time in 10-15 days;
• when cleaning, it is strictly forbidden to stand on the horizontal sections of the air ducts, put ladders on them;
• for those working at height, as well as for the stability of ladders and step-ladders, continuous monitoring is established;
• when working at height from ladders or ladders, people are not allowed under the place of work;
• during repairs, measurements and adjustments at height, personnel must have a safety belt with a cable and carabiners;
• holes and fittings for aerodynamic measurements are located so that their use is safe and does not interfere with the maintenance of the equipment during operation. Openings for aerodynamic measurements must be closed during operation of the aspiration unit.

4. Safety requirements in emergency situations

4.1. The dust of grain storage and processing enterprises is flammable and explosive. The maximum permissible content of grain dust in the working area is 4 mg/m3, flour dust is 6 mg/m3.

4.2. In case of excessive dust, immediately turn off the process equipment and aspiration installations until the reasons are clarified.

4.3. Situations that can lead to an accident or accident:

• sparking in process equipment, overheating of bearings over 60°C;
• heating of fan bearings and sluice gate above 60°C;
• imbalance of the fan impeller;
• excessive heating of the rotary valve drive gearbox;
• destruction of air ducts of the aspiration network;
• lack of fan drive guard and sluice gate.

In all the above cases, the employee must immediately turn off the technological and aspiration equipment, inform the shift foreman or the head of the workshop.

4.4. In case of signs of fire, immediately stop all equipment with the emergency shutdown button, inform the shift foreman, report the fire detector to the plant’s checkpoint, and if necessary, to the city’s fire station by phone 01, take part in the elimination of the fire.

4.5. In cases of injury, it is necessary to immediately inform the shift foreman, the head of the workshop, contact the medical center of the plant, if necessary, call an ambulance by calling 03.

5. Possible malfunctions of ventilation systems and ways to eliminate them.

5.1. Repair of aspiration installations should be carried out with a complete shutdown of the aspiration equipment and the technological and transport equipment it serves.

5.2. The service personnel must inform the shift supervisor about the identified malfunctions, who takes measures to eliminate them, makes an appropriate entry in the log.

6. Safety requirements at the end of work

6.1. At the end of the shift, the employee must put his workplace in order.

6.2. Report all detected safety violations to the foreman, transfer the workplace, tools and fixtures to the shifter, informing him of the malfunctions that have occurred and the measures taken to eliminate them.

6.3. Before changing into personal clothes, take a hygienic shower, put the overalls in the wardrobe.

6.4. It is not allowed to remain in the workshop or on the territory of the plant after the end of the shift without the knowledge of the shift foreman or the head of the workshop.

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