Underwater Welding & Cutting Training Course

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COURSE OVERVIEW

Underwater welding and cutting is one of the most specialized disciplines in the commercial diving industry, widely applied in offshore oil & gas, marine construction, ship repair, subsea maintenance, and underwater infrastructure projects.

The work requires not only diving competence but also a solid understanding of welding processes, cutting techniques, equipment operation, and strict safety procedures in underwater environments.

The Underwater Welding & Cutting Training Course is designed to provide participants with both theoretical knowledge and practical skills in surface welding and underwater welding/cutting operations. The program combines classroom instruction with extensive hands-on practice, enabling trainees to perform underwater welding and cutting tasks safely, efficiently, and in accordance with industry requirements.

COURSE OBJECTIVES

Knowledge

Upon completion of the course, participants will be able to:

  • Understand welding standards, symbols, terminology, and welding procedures
  • Understand dry and underwater arc welding and cutting processes
  • Understand grinding techniques and the safe use of hand-held mechanical equipment
  • Recognize hazards associated with welding, cutting, grinding, and underwater operations
  • Understand accident prevention measures, risk assessment techniques, and safety requirements for welding and cutting activities

Practical Skills

Participants will be able to:

  • Prepare welding and cutting equipment, consumables, and materials
  • Identify different types of welding electrodes and grinding discs
  • Inspect, maintain, and properly store welding equipment and consumables
  • Assemble and dismantle welding and cutting equipment safely and correctly
  • Select appropriate welding and cutting techniques according to material type and welding position
  • Perform butt joints, T-joints, lap joints, corner joints, and cruciform joints in various welding positions
  • Perform metal cutting operations on different types of steel
  • Evaluate weld quality and identify acceptable and unacceptable weld conditions
  • Apply acquired skills effectively in real working environments

Professional Attitude

Participants will develop:

  • Self-discipline and responsibility toward learning and work
  • Professional work ethics and safety awareness
  • A proactive and efficient working attitude

CAREER OPPORTUNITIES

After successful completion of the course, participants may:

  • Perform welding and cutting operations on onshore and underwater construction projects
  • Work independently or as part of a commercial diving and subsea operations team
  • Pursue career opportunities in offshore oil & gas, marine construction, shipyards, underwater maintenance, and industrial fabrication sectors

TARGET PARTICIPANTS

This course is designed for:

  • Personnel who have graduated from a commercial diving training program
  • Personnel with basic welding training or limited welding experience
  • Individuals possessing fundamental safety awareness regarding mechanical hand tools and equipment

COURSE DURATION

200 training hours (equivalent to 25 days)

  • Practical training duration: 23 days
  • Theory review, final examination & practical assessment: 2 days

TRAINING LANGUAGE

Vietnamese

PVD Training can arrange interpretation services when participants are foreign nationals.

TRAINING METHODOLOGY

  • Classroom-based theoretical instruction
  • Extensive practical welding training at PVD Training’s welding workshop
  • Continuous instructor guidance and performance monitoring
  • Final theoretical and practical competency assessment

CERTIFICATION

Participants who successfully complete the course and meet the assessment requirements will receive:

Underwater Welding & Cutting Certificate

Issued by PVD Training

Certificate Validity

No expiry date

The certificate is recognized nationwide.

MINIMUM CLASS SIZE

Minimum 8 participants

COURSE CONTENT

Part 1: Basic Surface Welding & Cutting Training (Positions 1F to 3G)

Theory

  • Review of welding safety requirements, equipment, and accessories
  • Welding principles and welding processes
  • Welding materials and consumables
  • Welding positions and welding defects
  • Setting welding current for different electrode types
  • Base materials and filler materials
  • Characteristics and properties of welding consumables
  • Metallurgical structure of welds
  • Welding symbols and weld leg dimensions
  • Types of fillet weld joints
  • Welding distortion and deformation
  • Types of butt weld joints
  • Theoretical examination

Practical Training

Welding practice in the following positions:

  • 1F
  • 2F
  • 3F
  • 4F
  • 1G
  • 2G
  • 3G

Part 2: Basic Underwater Welding & Cutting Training (3G Position)

Theory

Introduction to Underwater Welding

  • Definition, characteristics, and applications of underwater welding technology
  • Fundamentals of underwater welding
  • Underwater welding principles
  • Characteristics of underwater welding operations
  • Advantages of underwater arc welding
  • Limitations of underwater arc welding

Underwater Welding Equipment

  • Introduction to underwater welding equipment
  • Introduction to underwater welding consumables
  • Applications of underwater welding

Classification of Underwater Welding

Wet Welding

  • Definition of wet welding
  • Wet welding principles
  • Characteristics of wet welding
  • Limitations of wet welding

Dry Welding

  • Definition of dry welding
  • Characteristics of dry welding
  • Limitations of dry welding

Dry Welding Methods

  • Hyperbaric welding techniques
  • Dry habitat welding methods
  • Applications and operational considerations

Risks Associated with Underwater Welding

  • Electrical hazards
  • Explosion and fire risks
  • Diving-related hazards
  • Gas generation and entrapment risks
  • Environmental and operational challenges

Practical Training

  • Underwater welding practice in the 3G position
  • Underwater metal cutting practice
  • Equipment handling and operational exercises
  • Practical competency assessment

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Fire Protection Equipment and System Services

Service Overview

In the oil and gas, heavy industry, and offshore sectors, the risk of fire and explosion is ever-present due to the presence of flammable fuels, high-power electrical systems, and harsh operating conditions. Ensuring that fire protection equipment and systems are always ready for operation is a mandatory requirement to protect people, property, and maintain the continuity of production activities.

PVD Training provides inspection, maintenance, repair, and technical support services for fire protection equipment and systems, serving oil and gas projects, industrial plants, and offshore projects. These services are implemented to ensure that fire protection systems meet technical requirements, safety standards, and current legal regulations throughout their operational lifecycle.

Scope of Services

PVD Training’s Firefighting Equipment & System Services comprehensively cover all items related to firefighting equipment and systems used in industrial and offshore environments.

We inspect, maintain, and repair portable and fixed fire extinguishers, including powder extinguishers, CO₂ extinguishers, clean agent extinguishers, and other specialized firefighting equipment. Inspections are conducted to assess the technical condition, operational capability, and safety compliance of each device.

In addition, PVD Training provides maintenance and inspection services for fixed firefighting systems, including water-based firefighting systems, foam (AFFF) systems, gas firefighting systems such as FM200, and equivalent systems. The work includes inspecting the condition of pipes, valves, nozzles, activation devices, and related components to ensure the system can operate effectively in the event of a fire or explosion.

Additionally, the service includes inspection and maintenance of breathing and rescue equipment, such as SCBA and escape aids, to ensure readiness for use in emergency situations.

Service implementation process

PVD Training’s fire protection equipment and system services are implemented according to a strict control process to ensure quality, safety, and compliance.

First, the technical team surveys the current status of the fire protection and firefighting system, assessing the condition of the equipment, the degree of wear and tear, operational capabilities, and any points that do not meet technical requirements or safety regulations. Based on this, we develop a maintenance and repair plan appropriate to the actual conditions of each project.

During implementation, maintenance, repair, and inspection work is carried out in accordance with technical procedures, with safety supervision and quality control. After completion, the system and equipment are re-inspected to confirm their operational status and level of compliance with safety requirements before being handed over to the customer.

Technical standards and safety compliance

Throughout the entire service provision process, PVD Training strictly adheres to occupational safety requirements and technical standards applicable to fire protection systems in the oil and gas and industrial sectors. Inspection and maintenance activities are carried out in accordance with the investor’s internal regulations, industry technical standards, and relevant legal requirements.

Compliance with safety standards and procedures not only ensures the effective operation of fire protection and firefighting systems but also supports customers in safety inspections, assessments, audits, and compliance with relevant parties’ regulations.

Value and benefits

PVD Training’s fire protection equipment and system services provide tangible value in enhancing the overall safety of buildings and workers. Properly inspected and maintained fire protection systems help minimize fire and explosion risks, limiting damage to people and property in the event of an incident.

In addition, regular maintenance and technical control of the system helps customers maintain operational readiness and avoid production interruptions due to safety-related issues. The service also contributes to extending the life of equipment and optimizing long-term operating and maintenance costs.

Application Areas

    • PVD Training’s Firefighting Equipment & System Services are suitable for various types of projects and facilities, including:
    • Oil and gas drilling rigs and offshore projects
    • Industrial plants and manufacturing facilities
    • Warehouses and storage areas for flammable materials
    • Oil and gas service vessels and marine structures

Industrial Valve System Inspection, Assessment, and Maintenance Services

Service Overview

Valves are core components in the technological systems of industrial plants, piping systems, and offshore oil and gas projects. They regulate the flow, pressure, and volume of media such as oil, gas, water, chemicals, and other industrial substances. Due to continuous operation under high loads, high pressures, and harsh environments, valve systems are prone to wear, performance degradation, or failure if not properly maintained.

PVD Training provides valve maintenance services, including equipment inspection, technical condition assessment, and maintenance activities tailored to actual operating conditions. These services help customers maintain equipment performance, minimize unplanned downtime, and extend the lifespan of the entire valve system in plants and offshore facilities.

The role of valve maintenance in industrial operations

In industrial and oil and gas systems, valve-related incidents can have serious consequences such as fluid leaks, loss of pressure control, production line interruptions, and even human safety impacts. Therefore, valve maintenance is not only a routine technical activity but also an important part of asset safety and operation management.

Proper timing and methods of maintenance help:

    • Maintain stable flow and pressure in the system
    • Detect early signs of damage or performance degradation
    • Reduce the risk of technical failures and accidents
    • Limit major repair costs and prolonged downtime

PVD Training’s valve maintenance services play a crucial role in ensuring safe, continuous, and efficient operation for industrial and offshore projects.

Scope of valve maintenance services

PVD Training’s valve maintenance services are implemented flexibly to suit the operational characteristics and technical requirements of each system. The scope of services includes:

    • Comprehensive inspection of valve technical condition
    • Assessment of wear and tear levels and operational performance
    • Scheduled maintenance or maintenance based on actual operating conditions
    • Performing maintenance tasks to restore and maintain equipment performance
    • Technical support during system operation and maintenance

Maintenance activities are performed in accordance with the operating conditions of the equipment, including industrial plant environments and offshore facilities.

Maintenance methods and procedures

PVD Training implements valve maintenance services following strict technical procedures to ensure the quality and reliability of equipment after maintenance.

The process begins with a survey of the system’s current status, collecting information on operating conditions, maintenance history, and technical issues that have arisen. Based on this, the technical team conducts a detailed inspection of each valve, assesses its condition, and determines the items that need maintenance.

After completing the assessment, PVD Training performs appropriate maintenance work to ensure the equipment meets operational requirements. Maintenance results are recorded and reported, serving equipment management and future maintenance planning.

Ensuring system performance and reliability

The goal of valve maintenance services is to ensure that the system always operates stably and meets technical requirements throughout its operating life. Maintaining equipment performance helps the system operate more efficiently, reduces energy losses, and minimizes incidents.

For offshore projects and continuous operation systems, valve reliability is a key factor in ensuring safety and progress. PVD Training’s services help customers proactively control equipment status and maintain stable operating conditions in the long term.

Value and benefits

PVD Training’s valve maintenance services provide customers with many practical benefits in operation and technical maintenance.

Firstly, the service helps minimize downtime, reducing interruptions in production and operation. Additionally, proper maintenance extends the lifespan of the valve system, reduces replacement costs, and optimizes long-term maintenance expenses.

The service also supports customers in technical asset management, enhancing safety and ensuring compliance with technical and safety requirements applicable to offshore plants and structures.

Application areas

PVD Training’s valve maintenance service is suitable for many fields and types of projects, including:

    • Industrial plants and industrial parks
    • Pipeline systems and technological lines
    • Oil and gas projects and offshore drilling rigs
    • Technical operation and maintenance projects

Electrical & Instrumentation Services

Service Overview

PVD Training provides Electrical & Instrumentation (E&I) services for oil and gas, industrial, and marine projects, meeting the requirements for continuous, safe, and stable operation in harsh working environments. The services are designed to support customers throughout the entire technical system lifecycle, from initial installation, operation, and periodic maintenance to system repair and modification.

With a team of engineers and technicians with practical experience in onshore and offshore projects, PVD Training provides E&I solutions tailored to the specific characteristics of each project, ensuring that electrical and control systems meet technical, safety, and environmental requirements.

Scope of Services

E&I services include installation, inspection, connection, and maintenance of low-voltage and medium-voltage electrical systems, electrical cabinets, electrical cables, and measurement and control equipment. In addition, we provide preventive maintenance, repair maintenance, system calibration, and technical support during system commissioning and acceptance testing.

Implementation Process

E&I activities are carried out according to a clear technical process, including site surveys, risk assessments, construction and maintenance planning, work implementation, and inspection and acceptance. All work is supervised to ensure compliance with safety and quality requirements.

Value Delivered

PVD Training’s E&I services help customers maintain stable operating conditions, minimize system failures, optimize energy efficiency, and extend equipment life. This is a critical factor in ensuring long-term occupational safety and production efficiency.