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The Safety Security Management System is designed to be regularly updated to the latest information by linking with the following computer system to improve the accuracy and effectiveness of information.
- Academic Affair System: Info. on the persons engaged in research activities
- Space management system: Laboratory info., full-time persons who engage in research activities, information on the equipment to manage

The Lock function should be set not to automatically update the laboratory information or informationon the equipmentto manage

Chonnam National University Laboratory Safety Management Center

Machine/apparatus
Note
  • - When using a machine tool or a measuring instrument, use a specified tool.
  • - Wear working clothes and safety shoes during the experiment. Do not wear slippers or sandals.
  • - Be careful when conducting an experiment that needs wiring work. A cable sheath peeled off or a damaged tool may cause injury or electric shock.
  • - Wear protective goggles or protective gear, if necessary.
  • - As the ultraviolet rays have a sterilizing effect and the exposure to strong ultraviolet rays may cause blindness, be careful when handling ultraviolet irradiation equipment.
  • - When handling X-ray generators, follow the instruction of the academic adviser and the radiation safety precautions.
  • - When conducting a long-term experiment, power failure, water leakage, or gas leak may occur when there is no researcher in the laboratory.
      Thus, take measures against such incidents in advance when using electricity, plumbing, steam, and gas.
  • - A laboratory should be kept clean and arranged at all times to improve the work efficiency and secure safety.
  • Work Using Machine/Equipment
    • - General rules of handling machines
    • - Workers should wear clothes proper to their work.
    • - Wear gloves to handle rough work. Do not wear them when operating machine.
    • - Thoroughly check if the machine is normal. Machine malfunction should be notified by attaching a notice, displaying "Breakdown" or "Do Not Use."
    • - While machine is being operated, do not leave the place.
    • - Cover the driving part that may be touched by a emitter by during an experiment.
    • - Machine should always be well maintained. Before cleaning, inspecting, or repairing it, stop the machine.
    • - Do not have too much confidence in the machine. Fully understand the principle of the machine before its operation.
    • - Turn the switch off when the machine operation stops due to power failure.
    • - In principle, do not directly contact with a driving part. Do not place near a machine in operation.
    • - A work piece should be firmly stuck in/attached to a machine. If not, it may be separated from the machine during the operation.
    • - If a work piece is long, use a support and prevent people from accessing the work piece.
    • - Do not touch a machine until its operation completely stops. In addition, do not forcibly stop the machine with hands, tools, or other objects.
  • Do not perform a work in the direction of the rotating object.
    • - Rules on operating machines
    • - Only an authorized person can handle a machine, and a notice of “Staff Only” should be placed to prevent other people from operating the machine.
    • - Check the oil injection status and various levers before machine operation.
    • - Use necessary protective gear before machine operation.
    • - Start the operation of a machine at low speed for a test run before first operating the machine in earnest.
    • - Do not smoke or chat with others during machine operation.
    • - Stop the rotation of a machine to replace a cutting tool during machine operation.
    • - Turn the switch off when an error occurs in the machine.
  • Check the machine condition after the work is completed.
    • - Rules on handling tools
    • - Use the proper tool for the work.
    • - Check the tool before its use. If it is unstable, do not use it.
    • - Carefully handle a tool. If the tool is damaged during use, immediately replace it.
    • - Keep a tool in a certain place so as not to be lost.
    • - Do not throw a tool. Handle it with hands.
    • - Do not apply much force to a tool.
  • If a hand or a tool is wet, wipe the moisture off before using the tool.
    • - Rules on welding and cutting
    • - Before cutting welding or using flames, place a fire extinguisher in the workplace.
        For welding, wear a designated helmet, anti-dazzle spectacles, welding gloves, and welding apron.
    • - Clothes should not be worn with holes or stained with flammable materials such as oil.
    • - In a sealed place, make sure that ventilation is sufficient before welding or cutting.
    • - Only professional staff should handle gas cutters and welding machines.
    • - To handle a welding wire, touch a ground wire to an object to be welded and contact another wire to the top of an electrode bar.
        It is dangerous to ignite a tip again with the heat of a heated part in a narrow and confined space. Thus, ignite from the outside and start the work.
    • - The tip may not ignite immediately and a delayed ignition may cause explosion.
    • - Acetylene should not be used at pressure of 1.3 ㎏/㎠ or higher.
    • - Before using welding devices, check if regulators and hoses are firmly connected. During the check, DO NOT use flames.
    • - Use regulators and tips for proper purposes. DO NOT remodel them.
        If the operation stops for several minutes, remove the gas pressure in a regulator to prevent gas leak.
    • - If a welder leaves the place where there is a welding device, close the cylinder valve and separate the regulator and the hose to remove the gas.
    • - If a cylinder needs to be placed in an upright position, it should be tied up so as not to fall down.
    • - Do not contact an oxygen or acetylene cylinder with a live wire or a ground wire of an electrical appliance.
  • When storing or using an acetylene cylinder, place the edge of the valve up to prevent acetylene leak.
    • - Hazard Work
        Gas container
    • - Gas containers should be fixed by using a strap or chain to a safe object (wall, heavy experimental desk, etc.) before using or storing them.
    • - If they are not used, always cover them.
    • - When transporting a gas container, cover it and use a safe cart.
    • - Do not use flammable articles near gas containers.
    • - Do not apply grease or lubricant to gas containers or various joints. It may explode when mixing with oxygen.
    • - Before using a gas, check if there are no leaks.
    • - Containers should be regularly inspected.
    • - Do not use an adapter to connect a regulator. Use a proper regulator considering the gas characteristics.
  • Use pipes and regulator components proper for the gas to use. In case of hydrogen, an incompletely sealed state may cause a leak or explosion.

    Use pipes and regulator components proper for the gas to use. In case of hydrogen, an incompletely sealed state may cause a leak or explosion.
    When handling a combustible substance with a vacuum device, if the material is leaked from a pressure device, it is mixed with the air and an explosion may occur.
    A gas should be discharged to a hood or an outlet. If pump oil is contaminated, replace it.

    • The waste oil collected should be treated in a specified waste storage.
      • - Check if the vacuum system has a cooling trap.
      • - Use a container that can withstand internal pressure. Install a protective film to prevent container rupture.
      • - Before shutting off a pump, close the valve between the pump and the container to prevent the pump oil from flowing back into the system.
      • - Cover moving parts of a pump (belts, shaft connection, etc.).
  • Vacuum oven

    A dry oven is used in various ways such as removing water or solvents from samples ad drying laboratory glassware. If a solvent is not properly discharged or
    not used in the hood, the volatile substance may be released into the laboratory and the toxic gas may accumulate. A small amount of vapor may accumulate in the oven and
    form an explosive mixture with the air. When a toxic, volatile, or explosive chemical is dried in the oven, special measures should be taken to discharge it to the hood.
    In order to prevent the oven from exploding and destroying an object in the oven, it is recommended to use an oven in which the fuse blows.
    In addition, it is proper to use a bimetal or alcohol thermometer for the oven rather than a mercury thermometer.

  • Rolling mill

    Be careful when working near a machine that requires strong power. Do not wear loose clothes, rings, jewels, etc., but
    have your hair tidy and wear safety glasses. Do not put a specimen into a rolling mill by hand, but use wooden sticks or tongs.
    Do not work alone as much as possible. Workers should be able to easily operate the stop and reverse emergency switches at all times.

  • Overhead traveller crane (Hoist)

    An overhead traveller crane (hoist) is a convenient cargo handling gear that anyone can easily operate. However, a forcible operation may cause its malfunction. As it usually handles heavy objects,
    risk factors exist around the machine. In addition, it is installed on the ceiling, even a screw separated from the hoist may lead to disaster.
    However, most of these malfunctions or accidents can be prevented by extra care in handling or regular inspection of the machine.

    • Precautions
      • - Do not load more than the specified size.
      • - Move the hoist just above the center of gravity of the load, and lift it.
      • - Operate the hoist quietly and avoid sudden stops.
      • - Do not hoist a load with a person.
      • - Regularly inspect an overhead traveller crane (hoist).
  • Oil-hydraulic press

    An oil-hydraulic press itself is highly hazardous. Thus, before its use, regularly inspect it.
    When using an oil-hydraulic press that crushes or casts an object, wear protective suits and face shield and install a synthetic resin shield on the press.

    • Precautions
      • - Check the surroundings before work and check if the brake is well operated.
      • - When replacing or installing the mold, firmly set in the correct position.
      • - Do not remove the safety devices.
      • - When leaving the workplace, stop the machine operation.
  • Grinder

    A grinder causes accidents mainly because the grindstone is shattered, or the grinding power is splattered to the eyes, or the hand touches the grinder. In particular, the first and second cases are very risky.<br />The main cause of grindstone breakage is the stone itself. The stone is cracked or its balance or the diameter of its holes is not matched with the shaft.
    The main cause of grindstone breakage is the stone itself. The stone is cracked or its balance or the diameter of its holes is not matched with the shaft.
    To prevent damage caused by the rotation or breakage of a grindstone, use a strong cover to absorb the energy of stone debris.

    • Precautions
      • - Use a cover proper for the grinder type. The cover strength should be enough to withstand the impact of the breakage of the grindstone.
      • - The cover should have a proper exposure angle according to the grinder type.
      • - The diameter of the flange should be a third or longer than the diameter of the grindstone.
      • - Attach a transparent plant to prevent spit splashing.
  • Furnace

    As a furnace is hot inside and outside, wear heatproof clothes and heat-resistant gloves. Use tongs and wear safety glasses and face shield.
    When a specimen is cooled in the air, a warning sign that says "Very Hot" should be placed in front of the specimen. Keep first aid equipment in place. If a person is burned, take emergency measures.

  • Laser unit

    As laser emits a powerful laser beam, if you directly look at the ray, your retina may be burnt and you may become blind. In addition, you may suffer from severe burns.

    • Precautions
      • - When handling the laser, WEAR safety glasses for shading.
      • - Unexpected reflected lights may come into your eyes. Thus, pay attention to the direction of the light emission and check if there is a wall that reflects the rays.
      • - It is recommended to cover the entire body of a laser unit.