IOHA Session Recordings

Stay up to date on the hottest IH/OH topics while earning CM contact hours.​

Did you miss attending IOHA this year? Don’t miss out on the great educational programming that was shared! IOHA session recordings bring the best sessions to your desktop. Access through your computer, tablet or smartphone and choose the sessions that best meet your education needs and interests. 

You have 90 days after purchase to view and submit for credit.

IOHA Sessions

ILO and IOHA Member Collaboration - A Panel Discussion

IOHA represents the global community of occupational hygienists, 20,000 strong members in 32 national organizations dedicated to the discipline and application of the inherent principles of occupational hygiene. International NGOs such as the ILO and WHO are also concerned with worker health. IOHA and its member organizations can offer not only technical expertise to prevent hazardous exposures but also dynamic and creative ideas for education and training particularly in developing economies The panel discussion will explore the needs and possibilities of collaboration between the ILO and IOHA members.


Total Exposure Health: A New Approach to the Exposure Sciences

As global IH/OH professionals, we are positioned to effectively contribute as exposure scientists not only to the occupational health of individuals but to their overall well-being. This education session will demonstrate how the United States Air Force is ushering in a bold solution to capture workplace, environmental, and lifestyle exposures to the individual using advances in science, technology, and informatics called Total Exposure Health (TEH). TEH provides a framework and tools to strengthen prevention and reduce illness and injury through effective early intervention, improved health-related risk assessment decision-making, and risk mitigation. Individual Exposure Health Risk Profiles (IEHRP) attempt to quantitatively evaluate individual health risks based on genetics, occupational, lifestyle, and environmental exposures, medical disposition, protective factors,etc. Participants will have a new view of population-based standards and will explore the potential future of individual occupational exposure standards.


 ​​Nail Salon Worker Exposure

The purpose of this study was to estimate the volatile organic compounds (VOCs) levels of nail polishes used in nail salons through simulating the nail polish application process in a laboratory chamber. Worst case scenario was defined as the worker exposure to nail polish application to one set of fingernails every 15 minutes for an 8-hr. shift and simulated on paper plates in a flow-controlled chamber. Five different nail polishes were sampled for 8 hours using a passive air sampler. Of a total 81 VOCs analyzed, 8 VOCs (1-butyl alcohol, acetone, butyl acetate, ethyl acetate, ethyl alcohol, isopropyl acetate, isopropyl alcohol, and n-propyl acetate) were found in all samples. The arithmetic mean concentration of butyl acetate exceeded the Threshold Limit Value (TLV) of 150 ppm in all nail polish types. The arithmetic mean concentration of ethyl acetate was found to be 440 ppm (TLV = 400 ppm) in one type of nail polish. Formaldehyde was analyzed separately, and the arithmetic mean concentration exceeded the TLV of 0.10 ppm in all nail polish types. 

The nail care industry is a fast-growing industry in South Africa. The formal nail sector comprises of nail salons that are licensed and registered, while the informal nail sector are nail salons that are not licensed or registered. The different methods used during treatments of natural and artificial nails are all associated with potential health hazards. Research in this area has been conducted internationally but little has been done in South Africa. Working with natural and artificial nails involves the use of solvents such as acetone, ethyl acetate, and n-butyl acetate. Nail polish potentially contains formaldehyde, dibutyl phthalate (DBP), and toluene. Artificial nail applications make use of acrylic polymers and monomers like methyl methacrylate (MMA) and ethyl methacrylate (EMA). Exposure to these chemicals is associated with health effects such as skin and eye irritation, respiratory tract irritation, and neurological and reproductive health effects. 

Nail salon workers are exposed to many hazards (e.g., chemical, biological, ergonomic) that may lead to adverse health effects. Since many are immigrants working as independent contractors, they may not benefit from labor regulations afforded to permanent citizens/employees. The Michigan Health Nail Salon Cooperative (MHNSC) has mounted a multifaceted effort to promote health and safety in nail salons. Our group includes IH students and faculty at the University of Michigan (UM), undergraduates in the UM Vietnamese Student Association, and members of the NGO Workplace Health Without Borders (US Chapter). To date, our efforts include: personal air sampling, visits to 35 local salons, and focus groups to identify the workers' concerns and training needs. We have developed brochures spanning several topics (e.g., fungus) because of these focus groups. For this presentation, we report on our latest effort to develop and pilot an online module to train nail salon workers on chemical exposure and safety. 


Exposure and Explosions: Using CFD for Risk Assessment and Emergency Preparedness

During the last few decades, mathematical modeling has found its way into occupational hygiene applications. One of the most powerful modeling tools is computational fluid dynamics (CFD), utilizing computer simulation to reconstruct indoor and outdoor contaminant dispersion. The session will introduce the audience to the unique experience of using CFD models for occupational exposure assessment, for evaluation of vapor cloud blast load analysis and for concentration dispersion of various contaminants. How CFD compares to other approaches, how CFD models are well-validated for occupational health applications, and the limitations of CFD will be discussed via case studies, brought from various countries of the world.​


Indoor & Office Chemical Hazards

3D printing (additive manufacturing) is a manufacturing technique where a physical object is created layer by layer using computer models. Small scale 3D printers are being used in libraries, academies, and office-like environments. Also, many SMEs are developing their businesses utilizing 3D techniques. A common thing among these workplaces is limited knowledge and poor consideration of worker health and safety issues regarding 3D printing. In this case study, our goal was to assess the risks of 3D printing and create guidelines for safe working practices. According to the results, employees may be exposed to dust, nanoparticles, gaseous compounds, and various chemicals during printing, cleaning, and maintenance of the 3D printers. Based on our findings, guidance documents for workplaces and occupational health care were created. 

The use of computer simulations is a powerful tool in Indoor Air Quality (IAQ) studies. Multi-zone modeling is one of the most popular computing methods for IAQ because it can provide information on indoor airflow, temperature, and contaminant concentration distributions. The study presented was conducted in a research house using CONTAM (an indoor modeling program) software developed by US National Institute of Standards and Technology (NIST). The model was developed and calibrated to predict the contaminant distribution in the research house with the intention of having a tool for future research at the University of Texas at Tyler. To validate the results, statistical tools such as correlation coefficient, normalized mean square error, and others were used to evaluate the accuracy of IAQ prediction. Results show the ability of the model to predict satisfactorily gas contaminant distributions in the experimental house. 

The Health Hazard Evaluation Program at NIOSH assessed exposures to lead and copper during a weapons qualifications course at an indoor firing range. The airborne lead and copper concentrations for instructors and officers participating in the course were evaluated and found to be below occupational exposure limits. Lead and copper was found on all surfaces tested. Instructors' skin and footwear had lead on them as they left work to go home. All instructors had detectable blood lead levels. The ventilation system was not operating within NIOSH recommended parameters. Range hygiene practices surrounding debris cleanup and hand washing could lead to increased exposure. The practical recommendations that resulted from this project can help reduce exposures to lead and copper for instructors and shooters at indoor firing ranges. 

Workplace Health Without Borders: Strategies to Prevent Work-Related Disease​​

There are over two billion workers without basic access to Occupational Safety, Health, and Hygiene (OSHH) professionals and the ability to reduce work-related disease risks. Many occupational hygiene professionals around the world are passionate about volunteering to address this gap. The NGO Workplace Health Without Borders aims to build a global network offering training, mentoring, and technical assistance to address these exposure risks. Challenges include the need for culturally-appropriate delivery methods, risk information presented in simplified formats, and regular opportunities for OSHH professionals in developing countries to engage with colleagues throughout the world. This discussion will engage the audience in probing these issues and explore opportunities to increase OSHH professional access to prevent work-related diseases in under-served areas.

Hazards in the Mining Industry

An excess of mesothelioma has been observed in iron ore miners in Northeastern Minnesota. The 2007 mesothelioma study evaluated the association between mesothelioma, employment, and EMP exposures from taconite mining. The goal of this study is to re-evaluate this association for four size-specific EMP definitions using our updated study cohort and latest EMP job-exposure matrices. Mesothelioma cases were identified through the Minnesota Cancer Surveillance System and death certificates. Results show that all mesothelioma cases were male, and 72 of the cases had work experience in the taconite industry. Mesothelioma was weakly associated with the number of years employed in the taconite industry. No association was observed with any study-selected definition-specific cumulative EMP exposure. 

There is concern in the Philippines, Indonesia, Africa, and South America related to children's employment in small scale gold mines (SSGM). About 1 million children work in SSGM. The most ethical solutions would be to ban children from mines and gold processing supply lines. However, this issue is more complex. There are risks of traumatic injury, dermatitis, diving risks, lead poisoning, mercury (Hg) intoxication, and Hg contamination. Local governments, NGOs, health providers, and mining companies must: provide funding and schooling, provide jobs to replant trees, certify that no children are involved with gold processing, seek nonHg solutions to separating gold, and ban liquid Hg. Local medical/public health schools should sponsor health studies of children who are now/were engaged in mining. We need leadership in occupational health, local government, and industrial hygiene to reduce the number of children in mining. 

8th International Control Banding Workshop

Control Banding (CB) strategies to prevent work-related illness and injury for 2.5 billion workers without access to health and safety professionals has grown exponentially during the last 20 years. CB applications have broadened into chemicals in general - including new emerging risks like nanomaterials and also into ergonomics and injury prevention. Originally CB is an action-oriented qualitative risk assessment strategy offering solutions and control measures to users through "toolkits". But during the last decade CB has gone beyond its traditional qualitative approach meaning that some chemical CB tools like Stoffenmanager® and EMKG-Expo-Tool additionally offer quantitative assessments. Other chemical quantitative exposure assessments tools like ART, ECETOC TRA and MEASE became available too. Furthermore user needs became more demanding meaning that tools should not only focus on CB itself, but additionally should provide a complete chemicals management platform. 

To be accepted by authorities and other stakeholders like the occupational hygiene community the underpinning of the underlying exposure models with sound data became increasingly important. At the previous 7th CB conference the results of the Eteam study on the validation of lower tier exposure tools used for REACH were presented. Since then several new studies, also on higher tier exposure tools have been published or are underway. But not only the exposure part of the tools was studied. Due to increasing pressure on substitution of CMR(S) chemicals, the validation of different hazard or occupational exposure banding schemes were questioned and the first studies appeared. 

Last but not least it has been shown that just 'offering' a control banding tool, without providing active support, does not automatically result in its use by SMEs, and even less in a 'proper' use. For successful implementation of CB and beyond…. strategies, other aspects than technical reliability model issues need to be covered as well. 

The 8th International Control Banding Workshop aims to discuss the complete picture of success and failure factors of CB and beyond….strategies. You are most welcome to share your experiences!

8th International Control Banding Workshop: Session 3 - HazardBanding/Occupational Exposure Banding

8th International Control Banding Workshop: Session 4 - Evaluation of Quantitative Exposure Models

 ​​Focused Risk Reduction Process in ExxonMobil

ExxonMobil has had success in reducing/eliminating occupational exposure risk through a new process called Focused Risk Reduction (FRR). The FRR process was developed to identify risk exposures via a review of the health effects of the exposure agent, site incident data, and inspection data. Implementation of the FRR process has enhanced risk identification and communication, driven exposure risk reduction, and resulted in cost savings. The FRR Process includes the identification of the exposure risk potential of key exposure agents for tasks and a review of key site data to help drive prioritization of risk reduction. Example site data that is reviewed and incorporated includes: high consequence events, audits, tasks with elevated exposure levels, and control mechanisms. The success of the program lies with the alignment of the business team, industrial hygiene, and site management.

Real-Time Exposure Measurement​

NIOSH strives to publish new and improved sampling and analytical methods covering emerging chemical hazards. NIOSH Draft Method 3706, VOCs by Portable Thermal Desorption-Gas Chromatography-Mass Spectrometry (TD-GC-MS) using Passive Sampling, is being developed to address onsite monitoring of toxic industrial chemicals for protection of workers and emergency responders. The method will allow onsite testing on the day of release to determine exposure levels. There have been some challenges in intra-instrument variability. Discussion of these results and possible internal standard addition schemes that may improve resultant measurement variability in the NIOSH method will be discussed.

Routine health risk assessments at AF Combat Arms firing ranges involve periodic monitoring of instructor exposure to total metals and chemicals. Advances in direct reading instruments provide the opportunity for real-time monitoring, which could be used to reduce cost, time, and provide immediate feedback to mitigate exposures. Immediate feedback of exposure levels can help individuals understand activities that lead to hazardous exposure levels. However, real-time monitors produce large data sets that can be cumbersome to analyze. Video monitoring technology is a tool that can enhance exposure assessments by facilitating the correlations between activities and real-time data. 

Mental fatigue represents a decrease in brain activity and performance. Fatigue is the result of a lack of rest and/or high mental workload. Because it can lead to production error, reduced production, accidents, degraded situational awareness, and reduced physical and cognitive ability, fatigue is a costly industrial issue. Notable industrial accidents due, at least in part, to operator fatigue include the Exxon Valdez, Three Mile Island, and the Chernobyl accidents. Research has demonstrated that fatigue can be measured by changes in the power of the alpha, theta, gamma, and delta bands of an electroencephalogram (EEG). Real-time measurements of fatigue could be used to predict and prevent fatigue events before they happen. While mobile, real-time measurement of fatigue is possible, current monitoring methods tend to be inconvenient, expensive, and/or suffer from false positives. 


Framewor​ks and Methodologies from Around the Globe

The NIOSH Mining Program has worked on the development of a new monitoring approach for the quantification of respirable crystalline silica (RCS) in dust samples directly at the mine site. The new approach will allow the generation of RCS exposure data within a few minutes of sample collection. The approach is built on the use of commercially available portable FTIR instruments and respirable samplers. The overall approach is the result of multiple laboratory and field investigations and mathematical models to quantify the RCS. As a final element of this approach, the NIOSH Mining Program identified the need for a new software tool to support the professionals in conducting this field-based protocol. 

There was no official PEL value when the first suspected case of 1-bromopropane (1-BP) exposure related occupational disease was reported in 2013. The Taiwan Occupational Health Hazard Evaluation team was asked to verify the workers' exposures in a golf club head manufacturer. The club head surfaces were cleaned when workers manually dipped a basket with club heads in a 1-BP solvent tank. The Institute of Labor, Occupational Safety and Health, Ministry of Labor initiated the exposure survey of 1-BP in Taiwan and proposed a recommended exposure limit (REL) based on a scientific review document. At workplaces using 1-BP as a metal surface cleaning solvent, personal and area air samples were taken. Meanwhile, the biological exposure index, 1-BP metabolite in workers' urine samples, were measured. Engineering controls and hand protection to mitigate exposures were recommended to the employers. The 1-BP REL document was drafted and verified by the technical committee of ILOSH. The 1-BP REL for 8-hr TWA was proposed to be 0.1 ppm with skin notation and announced through the public hearing process in 2017.

The workplace is changing, moving toward virtual working conditions, contingent employment, and robotics. Through these changes, there is a growing focus on worker safety, health, and well-being. In the global economy, employers can attract and retain workers by demonstrating a commitment to enhancing the well-being of employees. NIOSH and the RAND Corporation have collaborated to develop and operationalize a framework for worker well-being. This session will present the multidisciplinary literature review, key conceptual issues, and the proposed framework that defines worker well-being. Based on this framework, a survey tool was developed to enable OSH professionals and management to understand the issues facing their workforce and identify areas for potential intervention. 

Globally, chemical flame retardants are added to consumer goods. Polybrominated diphenyl ether (PBDE) flame retardants were phased out due to environmental and human health concerns and replaced with alternative flame retardants. Research suggests that these alternative flame retardants may also impact human health. Gymnastics studio employees handle foam and can be exposed to flame retardants. A gymnastics studio replaced older, uncovered foam with foam certified free of some flame retardants and performed intensive cleaning. NIOSH evaluated the impact of this change. Before the pit foam was replaced, we found that employees had significantly higher levels of PentaBDEs on their hands at the end of the workshift. After the pit foam was replaced, one of five detected individual PentaBDEs on their hands was higher at the end of the workshift. We found that the across shift increases remained significantly higher for three alternative flame retardants, two of which were measured in the replacement foam.  


Safety Training for Marijuana Cultivation Workers

Marijuana cultivation is a significant emerging industry with many job hazards. As in most emerging industries, occupational accident and injury surveillance is lagging behind worker needs. Although some safety guidance exists for indoor grow facilities, it is not well disseminated. In 2017, the Center for Health, Work and Environment at the Colorado School of Public Health produced several safety training events. This session will share the training framework and curriculum, discuss safety partnerships and capacity building, discuss training results, and behavior change among cultivation workers. A robust group strategy session will discuss how to identify which components of the training and research can be applied to other emerging agricultural environments.


Global OHS Challenges and Opportunities: Be Part of the Solution

Despite the significant growth in funding for global public health programs over the past 20 years, there has been no increase in funding for occupational and environmental health. There are few resources dedicated to addressing this growing need and even fewer resources directed toward harnessing the synergistic potential that the collective efforts represent. Many grassroots organizations have arisen throughout the world to improve worker health. This presentation will capture an overview of the present landscape, existing targeted efforts, potential intersections, and areas of need. This session will engage in harnessing audience feedback to identify opportunities to leverage partnerships and influence efforts to join in dynamic solutions.


ISO 45001: New Occupational Health and Safety Management System

Occupational injuries and diseases have widespread impact on individuals, employers, and economies. To help organizations manage these outcomes, ISO is developing ISO 45001, Occupational Health and Safety Management Systems (OHSMS). This presentation will provide information for OHS professionals who need to develop, implement, or manage an OHSMS within the framework of the ISO 45001 standard. Understanding ISO 45001 will help participants gain the knowledge needed to implement a fully functioning OHSMS suited to any organization in any industry. The presentation covers the following topics: introduction, the value of risk management through OHSMS, a systems approach to health and safety, the key elements of ISO 45001, and what ISO 45001 has in common with OHSAS 18001, ANSI Z10, the ILO OHSMS and ISO 14001.


Right Sensors Used Right: Respirable Dust Monitoring

The exposure of workers to respirable dust is common in every country of the world: mining, construction, manufacturing, oil and gas, and general industry. Real-time monitors have become increasingly popular for the assessment of this exposure. The NIOSH Center for Direct Reading and Sensor Technologies has launched a new initiative called Right Sensors Used Right. This session will focus on 1) how selection of the right sensor is essential to enable hazard-informed and exposure-informed hazard assessments, 2) the correct use of the respirable dust monitors, 3) a field study on the use of real-time dust monitors, and 4) the potential and limitation of very low-cost dust sensors to be used as real-time respirable dust monitors.


Occupational Hygiene Initiatives and Innovations in the Mining Industry

Respiratory hazards in the mining industry can be a source of significant health risks for workers. Identifying and assessing these risks is an important component of a comprehensive OEHS program. The experiences of a global mining company in reconciling crystalline silica standards between various countries, as well as between different regulatory agencies in the US, will be discussed. Hazard and risk assessment methodologies will be demonstrated as a key to prioritizing assessment and solutions for respiratory hazards. Utilization of computational fluid dynamic (CFD) models will be shown as an effective instrument for engineering control design. The use of Positive Displacement Ventilation Protocols to control exposures in a metal refining facility will be presented.​