In modern industrial and chemical processing environments, controlling workplace health hazards requires far more than handing out respirators or disposable gloves. True worker protection demands a rigorous, scientific approach—identifying exposure sources, evaluating exposure pathways, designing effective Local Exhaust Ventilation (LEV), and implementing physical containment strategies at the source.
Gradi Health & Safety Limited is excited to announce enrollment for our upcoming, internationally recognized cohort: OHTA 505: Control of Hazardous Substances, holding live online this September and October 2026.
Whether you oversee chemical processing lines, conduct workplace exposure assessments, or manage plant-wide EHS compliance, this comprehensive module equips you with the technical capability to design, evaluate, and maintain legally defensible exposure control systems.
💡 Why Control at Source Matters: Relying on Personal Protective Equipment (PPE) as a primary line of defense is often costly, uncomfortable for workers, and legally risky. OHTA 505 teaches you how to implement engineering solutions that eliminate or suppress hazardous chemical exposures before they reach the worker’s breathing zone.
What You Will Master: Key Learning Outcomes
The OHTA 505 curriculum goes well beyond basic safety theory. Through interactive lectures, practical engineering calculations, real-world case studies, and hands-on guidance, you will gain practical expertise across five critical pillars:
1. Advanced Application of the Hierarchy of Controls
Learn how to prioritize elimination, substitution, process modification, and engineering controls over secondary procedural or PPE solutions to satisfy ACGIH, OSHA, HSE, and ISO standards.
2. Design, Evaluation & Testing of LEV Systems
Gain deep technical knowledge of hood dynamics, capture velocities, duct transport velocities, fan static pressure testing, and air cleaning technologies (fabric filters, cyclones, scrubbers).
3. High-Potency Chemical & Pharmaceutical Containment
Explore cutting-edge isolators, glove boxes, split butterfly valves, continuous liners, and negative/positive pressure regimes for handling highly potent active pharmaceutical ingredients (APIs) and toxic chemicals.
4. Science-Backed RPE & CPC Selection Programs
Master the selection protocols for Chemical Protective Clothing (CPC) and Respiratory Protective Equipment (RPE) using breakthrough times, permeation rates, degradation data, and quantitative fit-testing standards.
5. Administrative Controls & Secondary Exposure Prevention
Design effective work scheduling, decontamination procedures, change-room layouts, and personal hygiene facilities that prevent secondary cross-contamination into administrative areas or workers’ homes.
Who Should Attend?
This module is specifically engineered to accelerate technical competency for:
- Occupational Hygienists & IH Technicians seeking ICertOHTA international credentialing.
- OSH / HSE Managers, Advisors & Coordinators responsible for chemical risk assessments.
- Chemical, Mechanical & Process Engineers involved in plant design, LEV procurement, or ventilation testing.
- Plant Managers & Operations Supervisors overseeing high-hazard manufacturing processes.
- Occupational Health Nurses & Physicians evaluating chemical exposure risks and health surveillance data.
Course Logistics & Registration Details
- 🗓️ Course Dates: September 26th & 27th | October 1st, 3rd & 4th, 2026
- 💻 Delivery Format: Live Interactive Online Training (Zoom)
- 🎓 Certification Pathway: Internationally Recognized ICertOHTA Certification
- 🏢 Organized By: Gradi Health & Safety Limited (Powered by OHTA)
Ready to Elevate Your Industrial Hygiene Career?
Don’t miss this opportunity to build high-value, practical expertise that protects worker health and secures regulatory compliance in chemical-intensive work environments.
👉 Click Here to Register for OHTA 505
📞 Phone / WhatsApp: +234 816 471 0175
✉️ Email: info@gradihs.com
🌐 Website: www.gradihs.org
Gradi Health & Safety Limited — Technical Excellence in Industrial Hygiene.