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Instructions for labor protection when working on a grinding machine

Occupational Safety and Health

Occupational Safety and Health / Standard instructions for labor protection

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Safe Operation

Introduction

Working on grinding machines can be accompanied by a number of harmful and dangerous production factors, including:

  • electricity;
  • abrasive dust and aerosols of cutting fluid;
  • flying pieces of abrasive material and workpieces;
  • high surface temperature of workpieces and tools;
  • increased level of vibration;
  • moving machines and mechanisms, moving products, blanks, materials;
  • insufficient illumination of the working area, the presence of direct and reflected brilliance, increased pulsation of the light flux.

When developing the Standard Instruction, the following labor safety system standards were used: GOST 12.0.003-74. Dangerous and harmful production factors. Classification; GOST 12.1.004-91. Fire safety. General requirements; GOST 12.3.002-75. Manufacturing processes. General safety requirements; GOST 12.3.025-80. Processing of metals by cutting. security requirements, etc.

Sharpeners in the performance of work according to their qualifications are required to comply with the safety requirements set forth in this Instruction.

In case of failure to comply with the provisions of this Instruction, employees may be subject to disciplinary, administrative, criminal and financial liability in accordance with the legislation of the Russian Federation, depending on the severity of the consequences.

1. General safety requirements

1.1. Trained personnel who have passed a medical examination, have been instructed in labor protection at the workplace, are familiar with the rules of fire safety and have mastered safe working methods are allowed to work independently on grinding machines.

1.2. The sharpener is allowed to work only on the machines to which he is admitted, and to perform the work that is entrusted to him by the head of the workshop (section).

1.3. Personnel servicing grinding machines must have: a cotton suit or semi-overalls, goggles, yuft boots.

1.4. If the floor is slippery (doused with oil, emulsion), the worker must demand that it be sprinkled with sawdust, or do it yourself.

1.5. The sharpener is prohibited:

  • use untested abrasive tools;
  • work in the absence of a wooden grating on the floor under the feet along the length of the machine, which excludes shoes from getting between the slats and ensures free passage of chips;
  • it is forbidden to work on the machine with a broken ground wire, in the absence or malfunction of blocking devices;
  • stand and pass under a lifted load;
  • pass in places not intended for the passage of people;
  • enter without permission behind the fences of technological equipment;
  • remove the barriers of hazardous areas of operating equipment;
  • wash hands in emulsion, oil, kerosene and wipe them with wiping ends contaminated with shavings.

1.6. About any accident, immediately notify the master and contact the medical center.

2. Safety requirements before starting work

2.1. Before starting work, the sharpener must:

  • accept the machine from the shifter: check whether the machine and the workplace are well cleaned. Do not start work until the identified deficiencies are eliminated;
  • tidy up overalls, fasten sleeves and jacket, put on a hat;
  • check the presence and serviceability of the protective screen and goggles, safety devices to protect against abrasive dust and coolants;
  • adjust the local lighting so that the working area is sufficiently lit and the light does not blind the eyes;
  • check machine lubrication. When lubricating, use only special tools;
  • securely fasten the handpiece, setting it in such a way that the gap between the edge of the handpiece and the working surface of the abrasive wheel is no more than 3 mm. The working surface of the handrest must be flat, and the edge of the working surface without potholes and workings;
  • check the idle speed of the machine: the serviceability of the controls, the serviceability of the lubrication and cooling system, the serviceability of fixing the control levers;
  • check the condition of abrasive wheels by external inspection in order to determine cracks and potholes;
  • check the passport on the strength test of circles with a diameter of 150 mm and above.

2.2. The installation of abrasive wheels and their fastening on the spindle of the grinding machine should be carried out by persons who have undergone special training and have been instructed on the rules for installing abrasive tools on grinding machines:

  • adjusters install abrasive wheels assembled and balanced with faceplates;
  • sharpeners install only those abrasive wheels that are not balanced.

2.3. The sharpener is prohibited:

  • work in slippers, sandals, sandals, etc.;
  • use faulty and incorrectly sharpened cutting tools and accessories;
  • touch live parts of electrical equipment, open the doors of electrical cabinets. If necessary, contact an electrician.

3. Safety requirements during work

3.1. During work, the sharpener must:

  • turn on the exhaust ventilation and check its operation;
  • lay out the tool issued for sharpening on a workbench without cluttering up the workplace and aisles;
  • check the reliability of the fastening of the abrasive wheel, the presence of cardboard gaskets between the clamping flanges and the circle, the reliability of the fastening of the nuts clamping the flanges;
  • check the correct operation of the machine at idle for 3 - 5 minutes, being away from the danger zone of a possible rupture of the abrasive wheel;
  • before installing the workpiece and fixture on the machine, clean them from chips and oil;
  • when sharpening or finishing, securely fasten the tool in the fixture or use a handy tool. It is forbidden to hold the tool on weight when sharpening;
  • sharpening of the axial tool processed in the centers should be carried out only with serviceable center holes, do not allow the top of the centers to rest against the bottom of the center holes: the tool must fit tightly into both centers of the entire conical surface of the center holes;
  • when manually feeding, feed the wheel or tool onto the wheel smoothly, without jerks and sudden pressure;
  • it is not allowed to work with the side surfaces of the circle, if the circle is not designed specifically for this type of work;
  • sharpening and finishing of the tool with diamond wheels should be carried out only with cooling;
  • when sharpening a tool with a coolant, make sure that the liquid washes the abrasive or diamond wheel over its entire working surface and is drained in a timely manner;
  • when switching from dry to wet sharpening, in order to avoid rupture, allow the wheel to pre-cool (cool down) and only after that start sharpening the tool with coolant;
  • edit abrasive wheels only with diamonds, diamond-metal pencils or special diamond substitutes in accordance with the established dressing technology;
  • remove diamond and metal dust from the machine with a special brush - sweep or scraper: it is forbidden to do this work directly with your hands. Do not allow the cleaner to clean the machine during its operation;
  • protect the circle from bumps and shocks.

It is necessary to stop the machine and turn off the electrical equipment in the following cases:

  • leaving the machine even for a short time;
  • temporary cessation of work;
  • interruption in the supply of electricity;
  • when cleaning, lubricating, cleaning the machine;
  • upon detection of any malfunction that threatens danger;
  • when tightening bolts, nuts and other fasteners.

3.2. While working on the machine, it is prohibited:

  • work on the machine in mittens or gloves, as well as with bandaged fingers without rubber fingertips;
  • take and feed any objects through the working machine, tighten nuts, bolts and other connecting parts of the machine;
  • sharpen cutting tools on faulty equipment;
  • to slow down the rotation of the spindle by pressing the hand on the rotating parts of the machine;
  • use local lighting with a voltage higher than 42 V;
  • lean on the machine during its operation, and do not allow others to do it;
  • work in circles that have cracks or potholes;
  • use levers to increase pressure on the circle;
  • during operation of the machine, open and remove guards and safety devices;
  • leave keys, fixtures and other tools on a running machine.

4. Safety requirements in emergency situations

4.1. In the event of a breakdown of the machine, failure of the control panel, turn off the machine and inform the foreman about it.

4.2. In case of fire of rags, equipment or a fire, immediately turn off the machine, inform the administration and other workers of the workshop about the incident and proceed to eliminate the source of fire.

4.3. In the event of an emergency, a danger to one's health or the health of those around them, turn off the machine, leave the danger zone and report the danger to the immediate supervisor.

5. Safety requirements at the end of work

After completion of work, the sharpener must:

  • turn off the machine and the electric motor;
  • tidy up the workplace: remove diamond and metal dust from the machine, clean the machine of dirt, carefully fold the workpieces and tools in the allotted place, lubricate the rubbing parts of the machine;
  • hand over the machine to the shifter or foreman and report all machine malfunctions;
  • Take off your overalls and hang them in the closet. Wash face and hands with warm water and soap, take a shower.

 We recommend interesting articles Section Standard instructions for labor protection:

▪ Machinist-borer. Standard instruction on labor protection

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See other articles Section Standard instructions for labor protection.

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