The OHTA 505 (W505) – Control of Hazardous Substances course is part of the internationally recognized Occupational Hygiene Training Association (OHTA) 500 Series. It focuses on teaching professionals how to design, evaluate, and manage control measures for chemical and physical hazards in the workplace.

Whether dealing with toxic vapors, chemical dusts, fumes, or other airborne contaminants, understanding control strategies is critical to protecting workers’ health and ensuring compliance with global occupational hygiene standards.

What Is OHTA 505 (W505)?

OHTA 505 (W505) provides a deep dive into practical and theoretical approaches for minimizing exposure to hazardous substances. Key topics include:

• Principles of hazard control (elimination, substitution, engineering controls, administrative measures, PPE)

• Design and performance of ventilation systems

• Selection and use of control technologies

• Evaluation and verification of control effectiveness

• Relevant exposure standards and regulatory frameworks

• Case studies on successful hazard control implementation

The course combines technical knowledge with hands-on exercises to ensure participants can apply control principles in real workplace scenarios.

Why Is Controlling Hazardous Substances Essential?

Poor control of hazardous substances can result in:

• Long-term occupational illnesses (respiratory diseases, skin disorders, neurological damage)

• Workplace incidents and costly operational downtime

• Non-compliance with ISO 45001 and international health regulations

• Reputational and legal risks for organizations

This training ensures professionals have the competence to design effective risk reduction programs rather than relying solely on personal protective equipment (PPE).

Who Should Attend W505?

The course is ideal for:

• Occupational hygienists and industrial hygiene technicians

• HSE managers, supervisors, and engineers

• Environmental health and safety consultants

• Professionals pursuing the INTERNATIONAL CERTIFICATE IN OCCUPATIONAL HYGIENE TRAINING ASSOCIATION (ICertOHTA) qualification

Course Structure and Certification

OHTA 505 (W505) is delivered by accredited training providers globally, featuring:

• Interactive lectures and workshops

• Practical exercises evaluating real control measures

• Written and practical assessments to test competency

Upon successful completion, participants earn a certificate that counts toward the ICertOHTA pathway, helping them progress toward becoming internationally recognized occupational hygiene professionals.

Why Train with JAB International Consultancy?

At JAB International Consultancy, we provide OHTA-approved training with expert tutors who bring field experience in designing and auditing hazard control programs. Our courses blend global best practices with practical insights from industrial applications.

To learn more about the OHTA curriculum and standards, visit the Occupational Hygiene Training Association (OHTA).

Conclusion

The OHTA 505 (W505) – Control of Hazardous Substances course equips occupational health and safety professionals with advanced skills to identify risks, implement effective controls, and safeguard workplace health. Completing this module is a key step toward mastering occupational hygiene and achieving ICertOHTA certification.