Occupational Safety Training for Transformer Manufacturing

1. Overview of transformers

a. What is a transformer?

• A transformer is a device used to change the voltage and current of a power source to a different voltage and current level for use in electrical systems. The transformer is an important device in industrial and civil electrical systems, used to supply power to electrical equipment such as machines, lighting, computers, air conditioners, solar power systems, and other electrical equipment.
• Transformers are designed to change the voltage and current, including both input and output voltages, and can be configured into many different types depending on the needs of use. Typically, transformers are divided into two main types: potential transformers and power transformers.
• Potential transformers are used to reduce electrical pressure in large electrical systems, while power transformers are used to increase or decrease voltage for specific devices. Transformers can be controlled manually or automatically, depending on the usage requirements and application environment.
• The transformer products of Vietnamese companies are manufactured with modern technology, meet international standards, and have been tested and certified to meet quality and safety standards. In addition, Vietnamese transformer products also have competitive prices and are favored in domestic and foreign markets.
• However, there are still some challenges in transformer manufacturing in Vietnam, such as fierce competition from foreign manufacturers, inadequate production techniques, and product quality that does not meet requirements and needs to be improved. However, with the efforts of transformer manufacturing companies, it is hoped that this industry will continue to develop in the future.

b. Types of transformer manufacturing machines

The types of machinery and equipment for manufacturing transformers include:

• Metal cutting and processing machines: Laser cutting machines, mechanical cutting machines, milling machines, lathes, grinding machines, planing machines.
• Measuring equipment: Metal thickness measuring machine, thermal measuring machine, hardness measuring machine, durability measuring machine.
• Welding machines: TIG welding machine, MIG welding machine, CO2 welding machine, stick welding machine.
• Testing equipment: Insulation testing equipment, voltage measuring machine, current measuring machine, transformer efficiency measuring machine.
• Painting equipment: Paint spraying equipment, paint drying machine.
• Assembly equipment: Core pressing machine, circuit pressing machine, transformer lid pressing machine, component assembly machine.
• Other equipment: Balancing machine, oil pump, powder grinding machine, part washing machine.

These machines and equipment are all used to manufacturing components and parts for transformers. In addition, these machines and equipment are also used in the process of testing, maintaining, and repairing transformers.

c. Typical transformer manufacturing enterprises in Vietnam

Currently, Vietnam has a number of typical transformer manufacturing companies as follows:

• Trung Quoc Viet Nam Manufacturing and Trading Co., Ltd: This is the leading company in Vietnam in transformer manufacturing. This company manufactures transformers from 50KVA to 5,000KVA and has been certified ISO 9001:2015.
• Phuc Dien Manufacturing and Trading Co., Ltd: This company specializes in manufacturing transformers from 25KVA to 2500KVA and is certified ISO 9001:2015.
• Dai Nam Transformer Co., Ltd: This company specializes in manufacturing transformers from 25KVA to 2500KVA and is certified ISO 9001:2015.
• Quang Minh Electrical and Mechanical Co., Ltd: This company specializes in manufacturing transformers from 50KVA to 3,150KVA and is certified ISO 9001:2015.
• Dien Quang Manufacturing and Trading Co., Ltd: This company specializes in manufacturing transformers from 25KVA to 5,000KVA and is certified ISO 9001:2015.

These companies all use modern technology to manufacture transformers, ensuring quality and safety for users.

d. Specific jobs in a transformer manufacturing factory

Group 1

• Executive director, deputy executive director, head of department in a transformer manufacturing factory.

Group 2

• Safety officer: manages safety in the factory, designs safety procedures, supervises and urges employees to comply with safe working procedures.

Group 3

• Mechanical manufacturing: The mechanical parts of the transformer such as cabinets, core pipes, doors, frames, and cooling systems will be manufactured with mechanical machines.
• Assembly: Mechanical, electrical, and control parts will be assembled to create a complete transformer.
• Quality control: Each transformer will go through quality control procedures to ensure that they meet technical standards and operate correctly.
• Painting: After quality control, the transformers will be painted to protect them from corrosion and other environmental factors.
• Transportation: After manufacturing is completed, the transformers will be packaged and transported to customers or distribution agents.

Group 4

• Office work, service, sales, marketing.
• Manufacturing management, quality management, human resource management, material management, financial and accounting management.
• Research and development of new products.
• Design: Design engineers will create technical drawings and 3D models of transformers based on customer requirements and technical standards.

2. Overview of the work safety training course for transformer manufacturing

Within the scope of this article, we focus on issues related to group 3, because group 3 is the group directly participating in the manufacturing process, bearing the highest risk of work safety. See more about other groups here

a. What is group 3 work safety training?

• Work safety training for group 3 is a training session to equip workers with awareness of how to prevent work accidents.
• The work safety training course will help workers recognize and prevent dangers, and limit the risk of work accidents while working.

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b. Training duration

Initial safety training duration

• The total training duration is at least 24 hours, including the examination time.
• 8 hours of theoretical study on the system of policies and laws on work safety and hygiene
• 8 hours of theoretical study on basic knowledge of work safety and hygiene
• 4 hours of theoretical study on specialized training content
• 2 hours of practical study on specialized training content
• 2 hours of theoretical examination at the end of the training course

The safety training center will allocate the time into many training sessions depending on the time arrangement for employees. But usually, there will be 6 training sessions, and the course will last for 3 days, on the condition that the manufacturing enterprise can arrange continuous study time.

Periodic safety training duration

• Before the work safety card expires, if an employee wants to renew it, they must undergo a periodic work safety training course, with a periodic safety training duration of at least 50% of the initial safety training duration.

Explanation: The total periodic work safety training duration is at least 12 hours, including the examination time. After completing the periodic training course and passing the examination, the employee will be re-issued or have their work safety card renewed.

c. Content of the training course

See more training content of the 6 groups

d. Work safety card

After completing the work safety training course and passing the examination, the employee will be issued a work safety card (in practice, it is often called a group 3 work safety certificate ).

In which, the group 3 safety card will clearly show information such as: full name, date of birth, specific job and working environment. At the same time, it also has the training time, red stamp and signature confirming the completion of the training course.

According to the regulations on issuing safety cards specified in clause 2 article 24 of decree 44/2016/ND-CP, it is divided into 2 cases:

• Case where the employer and the employee have a labor contract with each other, the employer must sign, stamp and seal the safety card for the trained person in group 3 after undergoing the training course from the work safety training unit and passing the examination.
• In the case of freelance, seasonal employees, who do not have a labor contract, the training unit must sign, stamp and seal the safety card for the employee after undergoing the training course from the work safety training unit and passing the examination.

3. Identifying dangers affecting workers when manufacturing transformers

The potential dangers affecting workers when manufacturing transformers include:

• Transformer manufacturing involves electrical equipment, so the risk of electric shock, fire, or conflagration is very high.
• Some toxic chemicals may be used in the transformer manufacturing process, so manufacturing employees need to wear full personal protective equipment and comply with the correct procedures for using and storing chemicals.
• The operation of transformer manufacturing machinery can cause work accidents such as cutting, breaking, crushing, stabbing, leading to injury or death for workers.
• During the manufacturing process, materials such as steel, aluminum, copper, and paper can have toxic effects on the health of workers if not handled correctly.
• Transformer manufacturing machines and equipment often generate high noise that can cause hearing problems and stress for workers.
• Strong light and reflections from metal surfaces can cause glare and affect the vision of workers.

4. Types of work accidents that commonly occur to workers when manufacturing transformers

Some work accidents that commonly occur during the transformer manufacturing process include:

• Injury from machinery: The machines in a transformer manufacturing factory can cause accidents such as cutting, breaking, crushing, stabbing, leading to injury or death for workers.
• Electric shock: Electricity is an important factor in transformer manufacturing. The risk of electric shock and other electrical dangers is very high if the equipment is not operated correctly.
• Chemical poisoning: In the process of transformer manufacturing, toxic chemicals such as insulating oil, epoxy resin, and solvents may be used. If not used correctly or if personal protective equipment is not worn, workers can suffer from chemical poisoning.
• Accidents caused by forklift drivers: Forklifts are an important part of the transformer transportation process. Accidents caused by forklifts can occur if the driver is not experienced enough or does not comply with safety rules.
• Accidents caused by using tools: Hand tools and mobile equipment can cause accidents if not used correctly or if they are damaged.

5. Safety measures when participating in transformer manufacturing

To ensure the safety of workers during the transformer manufacturing process, the following safety measures should be implemented:

• Use personal protective equipment: Workers need to wear full personal protective equipment such as helmets, protective glasses, masks, gloves, anti-puncture shoes, anti-static gowns, etc.
• Periodic equipment inspection: Equipment and machinery in the transformer manufacturing factory need to be inspected periodically to ensure they operate well and safely.
• Comply with working procedures: Workers need to comply with working procedures, work safety regulations, and are not allowed to go through restricted areas or use equipment incorrectly.
• Work safety training: Employees need to be trained in work safety to understand the risks and preventive measures to avoid accidents.
• Use chemicals correctly: Toxic chemicals such as insulating oil, epoxy resin, and solvents need to be used correctly and according to the correct procedures to avoid chemical poisoning.
• Use electrical operating equipment correctly: Electricity is an important factor in transformer manufacturing, and electrical operating equipment needs to be used correctly to avoid electric shock.
• Ensure safety when transporting: Forklifts and mobile equipment need to be used correctly to avoid accidents when transporting.
• Periodically organize work environment monitoring in factories and enterprises, collect and analyze harmful factors for employees, thereby adjusting to reduce the level of harm to prevent occupational diseases for them.

6. Benefits of work safety training for transformer manufacturing

An Toan Nam Viet provides your enterprise with the following great benefits after completing work safety training courses in accordance with the regulations in Decree 44/2016/ND-CP on work safety and hygiene, for companies, factories, and enterprises.

• Employees can recognize the potential risks of work accidents and take preventive measures to avoid them.
• Your Enterprise can establish risk prevention measures in the manufacturing, operation, and maintenance process.
• Minimize costs when work safety risks occur.
• Uninterrupted manufacturing will help increase labor productivity and product quality.
• Comply with work safety laws, avoiding legal risks.
• Create credibility and professionalism in all aspects, thereby enhancing your enterprise’s brand.

Nam Viet’s training courses are the solution to prevent and combat external factors affecting each individual so that they can avoid dangers that can lead to injury or, more seriously, death.

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7. Customer feedback after completing the work safety training course for transformer manufacturing

An Toan Nam Viet has many years of experience in the mission of accompanying many enterprises in Vietnam in general and in the southern provinces in particular. And that responsibility is something extremely precious to Nam Viet, which is why Nam Viet’s Work Safety Training is always focused on becoming more and more professional. And the motivation for An Toan Nam Viet to grow strong to this day comes from the positive feedback and suggestions from enterprises. Below are the feedback from our partners that we have served.

KOSIA E&C Co., Ltd

“I am very satisfied with Nam Viet’s safety training service, the teaching quality meets the standards we set. It helps our company reduce a problem that needs to be handled, so we can focus more on our expertise.”

Lee Ki Hwa / General Director

Bac Nam E&C Construction and Investment Joint Stock Company

“The first time I used the service at An Toan Nam Viet, I was very surprised by the enthusiastic 24/7 support of the consulting team. The class organization was very fast and convenient for our company, thank you very much for Nam Viet’s service!”

Nguyen Thanh Binh / Director

Hoa Dat Construction and Trading Joint Stock Company

“Nam Viet’s service has helped us a lot in simplifying work safety and the work of completing safety records to serve the working process. The consulting team is enthusiastic and timely with our questions. 5 stars for Nam Viet”

Truong Ba Ngoc Minh / Chairman of the Board of Directors

See more customer interviews after using An Toan Nam Viet’s services

8. An Toan Nam Viet’s Work Safety Training Capacity

An Toan Nam Viet is a reputable and quality work safety training center in Vietnam today. With work safety training sessions taking place continuously at manufacturing workshops, factories, or construction sites across the country (63 provinces and cities in Vietnam).

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Work safety training license

• An Toan Nam Viet has been checked and issued a certificate of eligibility for work safety and hygiene training by the Department of Work Safety of the Ministry of Labor – Invalids and Social Affairs. This further solidifies our work safety training capacity.

Documents and lectures

• Before work safety training documents are put into the WST training courses, they have been reviewed and approved to ensure that the lectures are correct in terms of knowledge and effective when applied.
• The teaching method of the lecturers is synchronized according to An Toan Nam Viet’s teaching standards, which is a method that experts in work safety and hygiene training have researched and drawn from the teaching process to bring the highest knowledge acquisition efficiency for trainees.

Facilities

• Controlling the factors in the classroom that affect the training process will increase the teaching performance and the knowledge acquisition efficiency of trainees.
• The facilities supporting our training course always arrange spacious classrooms that meet standards for area, lighting, training equipment, etc.

9. Reputable and quality national safety training center

At An Toan Nam Viet, we always prioritize the professional passion for work safety training. For us, conveying knowledge to workers about how to protect themselves so that they have a safe journey on their path to a livelihood is a contribution to building the country.

To ensure effective training, we carefully and meticulously prepare every little detail, no matter how small. From preparing tools, equipment, teaching devices to curricula, documents, sound, and lighting.

Our work safety training lecturers are experts with many years of experience in the field. They even have research projects to identify dangers in all occupations and how to prevent them.

The lecturers’ lectures are drawn from practice and conveyed in a vivid and easy-to-visualize way to workers. These factors help workers feel comfortable during their study time and absorb our teaching knowledge well. Of course, the knowledge conveyed always closely follows decree 44/2016/ND-CP.

From there, they grasp many measures to prevent dangers and how to protect themselves. At the same time, they also apply it in the most appropriate way in their actual work.

Our safety training center is proud to be a unit that provides reputable, professional work safety training services with the following advantages:

• Competitive training costs but training quality is still ensured.
• Flexible training schedule with the manufacturing situation of the Company and enterprise.
• Fast and legally compliant procedures for issuing work safety training certificates.
• Training lecturers are people with many years of experience in the profession.
• The classroom is controlled for factors affecting the training process to increase teaching performance and the knowledge acquisition efficiency of trainees.
• The lectures are compiled to be suitable for work safety at enterprises.
• An Toan Nam Viet works with dedication and professionalism to support customers accurately and quickly.

10. Refer to more work safety training documents for transformer manufacturing

• Work safety documents for transformer manufacturing (Power transformer)
• Set of work safety training documents
• Set of work safety training examination questions
• Multiple-choice work safety examination for transformer manufacturing (Power transformer)
• Lecture slides for work safety training for transformer manufacturing (Power transformer)