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Instructions for labor protection when working on anodizing baths

Occupational Safety and Health / Standard instructions for labor protection

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Safe Operation

1. General safety requirements

1.1. On the basis of this instruction, labor protection instructions are developed for workers employed in the processes of applying metal plating when working on anodizing baths (hereinafter referred to as workers employed in anodizing baths).

1.2. To perform work on anodizing baths, workers are allowed at least 18 years of age who have mastered safe methods and techniques for performing work, methods and techniques for the correct handling of mechanisms, devices, tools, as well as with loads.

1.3. To work on hoisting machines controlled from the floor, to hang the load on the hook of such machines, workers are allowed at least 18 years old, trained in a special program, certified by the examination committee of the organization and having a certificate for the right to use hoisting machines and hooking loads.

1.4. When performing work, it is necessary to comply with the accepted technology. It is not allowed to use methods leading to violation of labor safety requirements.

1.5. In case of any questions related to its safe performance in the process of work, you must contact your immediate or higher manager.

1.6. Employees employed in anodizing baths are required to comply with the internal labor regulations of the organization.

1.7. When working on anodizing baths, a worker may be exposed to dangerous and harmful production factors:

• increased gas contamination with vapors of harmful chemicals;
• elevated surface temperature of the part;
• increased voltage in the electrical circuit, the closure of which can occur through the body of the worker;
• fire and explosion hazard;
• moving mechanisms and machines;
• splashes of acids and solution.

1.8. Workers employed in anodizing baths must be provided with personal protective equipment.

1.9. The room in which work is carried out on the anodizing baths must be isolated from other production areas and equipped with a supply and exhaust ventilation system with air purification.

Supply and exhaust shop and exhaust ventilation from workplaces in the form of side suction should be checked daily and maintained in good condition.

1.10. The analysis of the state of the air environment in the production room must be carried out in accordance with the schedule approved by the employer.

1.11. Baths for anodizing should be installed so that the upper sides are at a distance of 1 m from the floor, and workers do not have to bend over the baths when loading and unloading parts.

1.12. Hanging devices (traverses, baskets and others) must be durable and comfortable, made of a material resistant to acids and alkalis.

1.13. Baths for anodizing must be equipped with onboard suction.

1.14. Baths of deep anodizing must be equipped with refrigeration units and special covers that turn off the electric current during their raising.

1.15. Baths for anodizing containing substances of 1,2 hazard classes, as well as solutions accompanied by the formation of fog with a high concentration of acid vapors during operation, must be equipped with lids and pouring devices,

1.16. When not in use, the anodizing bath must be switched off.

1.17. The internal surfaces of baths for aggressive substances, as well as pipelines to them, should be made or coated from corrosion-resistant materials.

Electrical equipment must be explosion-proof.

1.18. Devices installed near anodizing baths must be protected from electrolyte ingress, magnetic fields, temperature, chemical effects of the environment and mechanical damage.

1.19. In the event of an accident, a worker working on anodizing baths must stop work, notify their immediate or superior supervisor and seek medical attention.

1.20. An employee employed in anodizing baths must observe the rules of personal hygiene: before eating and after finishing work, wash their hands with warm water and soap. Food must be taken in rooms specially equipped for this purpose.

1.21. Workers employed in anodizing baths must be able to provide first aid to the victim.

1.22. Workers employed in anodizing baths who do not comply with the requirements of this manual are held liable in accordance with applicable law.

2. Safety requirements before starting work

2.1. Inspect the workplace, put it in order, clear the aisles and do not clutter them up.

2.2. Inspect, tidy up and put on all personal protective equipment provided for by the standards.

2.3. When working at anodizing baths, lubricate the mucous membrane of the nose, hands, face with petroleum jelly or lanolin.

2.4. Do not work with electrolytes if the skin on the hands and face is damaged.

2.5. Make sure that the exhaust ventilation is turned on, the side suctions are installed at the sides of the anodizing baths and that they are in good order.

It is forbidden to work with faulty or inoperative ventilation.

2.6. Make sure that the floor is dry and that the foot grate near the anodizing bath is stable and in good working order. The grate should have a dielectric rubber mat.

2.7. Prepare the necessary tools and fixtures for work in accordance with the requirements of the technological documentation.

2.8. Check availability and serviceability:

• guards and guards for all rotating and moving parts;
• current-carrying parts of electrical equipment (starters, transformers, buttons and other parts);
• grounding devices;
• protective interlocks;
• fire extinguishing means.

2.9. Lay parts in accordance with the requirements of technological documentation.

2.10. Check the illumination of the workplace. The voltage of local lighting should not exceed 50 V.

2.11. When working with lifting mechanisms, check their serviceability and comply with the requirements of the relevant labor protection instructions.

3. Safety requirements during work

3.1. Keep the work area clean and free from clutter.

3.2. It is not allowed to check the fastening of parts on hangers by shaking them over the anodizing bath.

3.3. Loading and unloading should be carried out with the current turned off, carefully, in order to avoid electrolyte splashing.

3.4. During the removal of parts from the bath for anodizing with electrolyte, ensure that the electrolyte drains from the parts before transferring them to another bath.

3.5. Measure the electrolyte temperature before turning on the electric current.

3.6. Do not touch live parts while working on anodizing baths.

3.7. Observe the anodizing regime, especially the temperature of the solution and the duration of exposure of parts in the anodizing bath, in accordance with the requirements of the technological documentation.

3.8. When working on baths for anodizing magnesium and its alloys, take measures to protect against electric shock:

• loading and unloading of baths should be carried out with the power off;
• process control from a remote control located in a separate room;
• carefully isolate the hoses from the sides of the bath.

3.9. When the ventilation is turned off, stop work.

3.10. Before unloading the parts from the anodizing bath, switch off the electric current.

3.11. Check the serviceability of the interlock system, alarm, limit switches, devices for hanging parts and the reliability of their fastening.

4. Safety requirements in emergency situations

4.1. When ventilation is turned off, work must be stopped. Workers must leave the premises immediately and tightly close doors leading to other premises.

4.2. If acid gets on an open part of the body, wash the affected areas with water, and then neutralize with a solution of bicarbonate of soda.

4.3. In case of poisoning with acid vapors, the victim must be taken to fresh air and freed from clothing that restricts breathing, medical personnel with an oxygen bag should be called. Artificial respiration in this case is contraindicated.

4.4. In case of injury, poisoning and sudden illness, the victim should be provided with first (pre-medical) aid and, if necessary, his delivery to a healthcare facility should be organized.

4.5. In case of electric shock, take measures to release the victim from the action of the current as soon as possible.

4.6. When rotating parts of machines, slings, load hooks and other equipment capture parts of the body or clothing, it is necessary to immediately give a signal to stop work and, if possible, take measures to stop the machine (equipment). You should not try to free yourself from the grip if it is possible to attract others.

5. Safety requirements at the end of work

5.1. Switch off the current on the anodizing bath.

5.2. Tidy up the workplace, put the tools and fixtures in the tool box.

5.3. Before handing over the shift, check on the anodizing bath:

• the presence and condition of the fences;
• protective interlocks;
• alarm;
• grounding;
• lighting and ventilation systems.

Record the results of the check in the shift acceptance and delivery log, inform the foreman about malfunctions.

5.4. Take off overalls and other personal protective equipment and hang them in a specially designed place.

5.5. Wash hands and face with warm soapy water, rinse mouth and shower.

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