Asbestos and other airborne fibres pose significant health risks in industrial, construction, and demolition environments. The OHTA 504 (W504) – Asbestos and Other Fibres course provides occupational hygiene professionals with the knowledge and skills to recognize, evaluate, and control exposure to these hazardous materials.

This module is part of the internationally recognized Occupational Hygiene Training Association (OHTA) 500 Series, designed to build technical competence for those managing occupational health risks in workplaces worldwide.

What Is OHTA 504 (W504)?

OHTA 504 (W504) focuses on understanding asbestos and synthetic mineral fibres, including:

• Types of fibres and their properties

• Health effects of asbestos and fibre exposure (e.g., asbestosis, lung cancer, mesothelioma)

• Sampling and analytical methods (air sampling, PCM/PLM/SEM/TEM techniques)

• Exposure assessment and interpretation of results

• Control measures (engineering controls, encapsulation, removal procedures)

• Standards and regulations (ISO, ACGIH TLVs, WHO guidance)

The course combines theory with practical exercises to ensure participants can assess and manage risks effectively.

Why Is Fibre Awareness and Control Training Important?

Even with global restrictions and bans on asbestos use, legacy asbestos-containing materials still exist in many facilities. Similarly, man-made mineral fibres (MMMFs) like glass wool, rock wool, and ceramic fibres can present respiratory hazards when airborne.

Proper training helps to:

• Identify asbestos-containing materials (ACMs) in buildings and industrial sites

• Prevent uncontrolled fibre release during renovation or demolition

• Ensure compliance with workplace health regulations

• Protect workers from chronic respiratory diseases

• Support risk assessment and safe removal operations

Who Should Attend W504?

This course is ideal for:

• Occupational hygienists and HSE managers

• Industrial safety engineers

• Environmental consultants

• Asbestos surveyors and analysts

• Professionals working toward the INTERNATIONAL CERTIFICATE IN OCCUPATIONAL HYGIENE TRAINING ASSOCIATION (ICertOHTA)

Course Delivery and Certification

OHTA 504 (W504) is delivered through accredited training providers worldwide and includes:

• Classroom or virtual lectures

• Practical demonstrations of sampling methods

• Case studies on asbestos management in real-world settings

• A written assessment and practical evaluation

Upon successful completion, participants receive an internationally recognized certificate that counts toward the ICertOHTA qualification.

Training with JAB International Consultancy

At JAB International Consultancy, we deliver expert-led OHTA 504 (W504) training programs designed to meet global standards. Our experienced instructors ensure participants gain both theoretical knowledge and practical skills for asbestos and fibre exposure assessment.

For international asbestos control standards, refer to the World Health Organization (WHO) guidelines on occupational exposure to asbestos.

Conclusion

The OHTA 504 (W504) – Asbestos and Other Fibres course is essential for professionals committed to controlling fibre-related health hazards in workplaces. Completing this training equips you with the technical competence to protect workers, comply with regulations, and move closer to achieving the ICertOHTA qualification.