Industrial Hygienist Role on MEGA Construction Projects

8/19/2023

Industrial Hygienist Role

An industrial hygienist is a professional who specializes in identifying, evaluating, and controlling workplace hazards that can affect the health and well-being of employees. Their primary goal is to ensure that working environments are safe, healthy, and conducive to employee well-being. Industrial hygienists play a crucial role in preventing workplace-related illnesses, injuries, and long-term health effects.

Here are some key ways industrial hygienists can help employers:

Hazard Identification

Industrial hygienists are trained to recognize various types of workplace hazards, including chemical, biological, physical, ergonomic, and psychological hazards. They conduct thorough assessments to identify potential risks to employee health.

Risk Assessment

After identifying hazards, industrial hygienists assess the level of risk associated with each hazard. This involves evaluating factors such as exposure levels, duration of exposure, and potential health effects on employees. WHS Occupational Hygienist can assist with risk assessments for confined spaces and with the development of Exposure Control Plans.

Exposure Monitoring

Industrial hygienists often conduct monitoring and measurement of environmental factors like noise, dust, chemicals, and other pollutants to determine if exposure levels are within acceptable limits. This data helps in understanding the extent of exposure and its potential impact on employee health.

Control Strategies

Based on their assessments, industrial hygienists develop control strategies to minimize or eliminate hazards. They may recommend engineering controls (e.g., ventilation systems, barriers), administrative controls (e.g., work rotation, signage, exposure control plans, code of practice etc), and personal protective equipment (PPE) to reduce exposure risks.

Regulatory Compliance

Industrial hygienists are well-versed in occupational health and safety regulations and standards. They help employers ensure that their workplaces comply with relevant regulations to avoid legal issues and penalties. Industrial hygienists play a critical role in ensuring regulatory compliance in workplaces. Here's how they contribute proactively and reactively in this aspect:

Proactive Compliance:

Regulatory Interpretation: Industrial hygienists stay updated with the latest occupational health and safety regulations and standards. They interpret these regulations to help employers understand their obligations and responsibilities.
Assessment and Audit: They conduct regular assessments and audits of workplaces to identify any areas of non-compliance with regulations. This proactive approach helps employers address issues before they become major problems.
Program Development: Industrial hygienists help develop comprehensive health and safety programs that align with regulatory requirements. These programs outline protocols, procedures, and guidelines for maintaining compliance.
Documentation: Industrial hygienists assist in maintaining accurate records related to exposure monitoring, risk assessments, control measures, and training. These records serve as evidence of compliance during inspections.

Reactive Compliance:

Incident Response: If an incident or violation occurs, industrial hygienists investigate the root causes and help develop corrective actions to prevent similar incidents in the future.
Regulatory Reporting: In case of accidents, exposures, or other incidents, industrial hygienists help with reporting to regulatory authorities as required by law.
Legal Support: In cases of regulatory violations, industrial hygienists can assist in providing expert testimony and documentation to support employers during legal proceedings.
Remediation Plans: If compliance issues are identified, industrial hygienists can help design and implement remediation plans to rectify the situation and bring the workplace back into compliance.

In both proactive and reactive scenarios, the expertise of industrial hygienists is invaluable for employers. They help organizations maintain a safe and compliant working environment, thereby minimizing legal risks, avoiding penalties, and promoting a culture of safety and well-being.

Incident Investigation

In the event of accidents, illnesses, or near-misses, industrial hygienists can investigate the root causes and provide recommendations to prevent similar incidents in the future.

Risk Communication

Industrial hygienists play a crucial role in communicating potential hazards and control measures to both employers and employees. Effective communication helps ensure everyone is aware of risks and understands how to mitigate them.

Program Development

Industrial hygienists assist in developing comprehensive occupational health and safety programs tailored to the specific needs of the workplace. These programs outline strategies, procedures, and protocols for maintaining a safe and healthy environment. The industrial hygiene plan compliments the site specific safety management plan.

Industrial hygienists play a complementary role to the health and safety team on site by bringing specialized expertise in identifying and managing workplace hazards. Here's how industrial hygienists can work together with the health and safety team to enhance overall occupational health and safety efforts.

By working closely together, industrial hygienists and the health and safety team can create a more comprehensive and effective approach to workplace health and safety. Their combined efforts result in a safer work environment, reduced risks to employees, and a stronger commitment to overall well-being.

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Approval of Quebec Model for Adjusting Occupational Exposure Limits in Alberta for Work Shifts Longer Than 8 Hours

8/5/2023

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Occupational health and safety is a paramount concern for any society, as it directly impacts the well-being of workers across various industries. Alberta, Canada, has taken a significant step in ensuring worker safety by granting approval for the use of the Quebec model to adjust Occupational Exposure Limits (OELs) for the substance of respirable crystalline silica during work shifts longer than 8 hours. This blog post delves into the details of this approval, the significance of the Quebec model, and the implications it holds for employers and workers in Alberta.

The approval is subject to certain terms and conditions to ensure its effective implementation. Employers must either use Alberta's Occupational Exposure Limit for respirable crystalline silica when applying the Quebec model (complex method) or use the adjusted Occupational Exposure Limits specified in the approval (simple method). The simple method provides exposure limits based on different average work hours per week, allowing employers to apply the most appropriate limit based on their specific schedules.

Background on Occupational Health and Safety ActTo Add Text

The Occupational Health and Safety Act (OHSA) plays a crucial role in safeguarding workers' health and safety in Alberta. Under subsection 22(1) of the OHSA, a Director has the authority to issue approvals to individuals, provided they meet certain terms and conditions, to maintain the health and safety of all involved parties. Furthermore, under subsection 22(3), the Director has the power to impose additional terms and conditions on such approvals.

IRSST - Quebec Model

The Occupational Health and Safety Code includes provisions for adjusting Occupational Exposure Limits for substances when work shifts exceed 8 hours. The Quebec model, developed and published by the Institut de recherche Robert-Sauvé en santé et en sécurité du travail (IRSST) du Quebec, is a recognized scientific method that uses the Haber method to calculate adjusted exposure limits.

This model holds significant importance as it aligns with the Threshold Limit Values (TLVs) for chemical substances published by the American Conference of Governmental Industrial Hygienists. Moreover, Alberta's Occupational Exposure Limits for chemical substances are largely based on the TLVs, further highlighting the relevance of the Quebec model for the region.

Approval of Quebec Model for Respirable Crystalline Silica

In a groundbreaking move to enhance worker safety, Mark Rice, a designated Director under the OHSA, has granted approval for the use of the Quebec model to adjust the Occupational Exposure Limit for respirable crystalline silica. Respirable crystalline silica, with CAS numbers 14464-46-1 and 14808-60-7, is a substance that poses health risks to workers, especially during extended work shifts.

New Occupational Exposure Limits for respirable crystalline silica

The following adjusted Occupational Exposure Limits for respirable
crystalline silica (based on applying the Quebec model) (“simple method”),

0.025 mg/m3 for work schedules averaging less than 40 hours per week (e.g., three 12-hour shifts followed by four days of rest),
0.025 mg/m3 for work schedules averaging 40 hours per week (e.g., four 10-hour shifts followed by three days of rest),
0.024 mg/m3 for work schedules averaging 42 hours per week (e.g., seven 12-hour shifts followed by seven days of rest, or fourteen 12-hour shifts followed by fourteen days of rest),
0.021 mg/m3 for work schedules averaging 48 hours per week (e.g., six 8-hour shifts followed by one day of rest or four 12-hour shifts followed by three days of rest),
0.020 mg/m3 for work schedules averaging 50 hours per week (e.g., five 10-hour shifts followed by two days of rest),
0.017 mg/m3 for work schedules averaging 60 hours per week (e.g., six 10-hour shifts followed by one day of rest, twelve 10-hour shifts followed by two days of rest, five 12-hour shifts followed by two days of rest, or ten 12-hour shifts followed by four days of rest),
0.014 mg/m3 for work schedules averaging 72 hours per week (e.g., six 12-hour shifts followed by one day of rest, twelve 12-hour shifts followed by two days of rest, or twenty-four 12-hour shifts followed by four days of rest), or
the lower of the two Occupational Exposure Limits specified in this list if the average hours in a work schedule falls between two adjacent items in this list.

Effective Date

This approval comes into effect on July 12, 2023. This approval shall be effective for a
period of ten (10) years from the effective date, unless varied, suspended or revoked under subsection 22(6) of the Occupational Health and Safety Act.

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How Can an Industrial Hygienist Help?

An industrial hygienist plays a crucial role in ensuring the health and safety of workers in industrial settings. Their expertise lies in identifying and controlling workplace hazards that could adversely affect the health and well-being of employees. Here are some ways in which an industrial hygienist can help:

Hazard Identification: Industrial hygienists conduct thorough assessments of the workplace to identify potential hazards such as chemical exposures, dust, noise, ergonomic issues, and biological agents. They use various monitoring and sampling techniques to measure the levels of contaminants in the air, soil, or water.
Risk Assessment: After identifying hazards, industrial hygienists evaluate the risks associated with exposure to these hazards. They analyze exposure levels, review health effects data, and determine if workers are at risk of injury or illness. Based on the assessment, they propose appropriate control measures.
Exposure Control: Industrial hygienists develop and implement control strategies to minimize or eliminate exposure to workplace hazards. These controls may include engineering solutions (e.g., ventilation, enclosure), administrative controls (e.g., work schedules, training), and personal protective equipment (PPE).

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Understanding the Health Effects of Asbestos FOllowing Accidental Exposure

7/1/2023

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The Silent Threat: Understanding the Health Effects of Asbestos

The Danger Lurking Within: What You Need to Know about Asbestos

1. What is Asbestos and Where is it Found?

Asbestos is a naturally occurring mineral fiber that was widely used in various industries due to its heat resistance and durability. It can be found in building materials such as insulation, roofing shingles, flooring, and cement, as well as in automotive parts, textiles, and other products. Unfortunately, prolonged exposure to asbestos can have severe health consequences.

2. The Health Hazards of Asbestos Exposure

When asbestos fibers are inhaled or ingested, they can become trapped in the body, leading to long-term health issues. The primary health risks associated with asbestos exposure include:

Mesothelioma: A rare and aggressive form of cancer that affects the lining of the lungs, abdomen, heart, or testicles. It has a long latency period, often taking decades to develop.
Lung Cancer: Asbestos exposure increases the risk of developing lung cancer, particularly among smokers.
Asbestosis: A chronic lung condition characterized by scarring and inflammation of lung tissue, leading to breathing difficulties and reduced lung function.
Pleural Plaques: Non-cancerous thickened areas in the lining of the lungs, which can cause chest pain and breathing problems.

3. Recognizing Symptoms and Seeking Medical Attention

Recognizing the symptoms of asbestos-related diseases is crucial for early detection and effective treatment. Common symptoms may include persistent coughing, chest pain, shortness of breath, unexplained weight loss, and fatigue. If you have been accidentally exposed to asbestos, it is essential to seek medical attention promptly. Inform your healthcare provider about the exposure history to ensure appropriate monitoring and potential early interventions.

4. Immediate Steps After Accidental Exposure

In the event of accidental asbestos exposure, follow these steps:

Step 1: Remove yourself from the contaminated area to minimize further exposure.
Step 2: Avoid shaking or brushing off your clothes, as this can release additional fibers into the air.
Step 3: Wash or shower with mild soap and water to remove any fibers from your skin and hair.
Step 4: Contact your supervisor or employer to report the incident and document the details.
Step 5: Consult with a medical professional to evaluate the level of exposure and discuss potential monitoring or preventive measures.

5. Legal and Compensation Considerations

Workers who have been accidentally exposed to asbestos may have legal rights and be entitled to compensation. It is crucial to consult with an experienced attorney specializing in asbestos-related cases to understand your rights and explore available options for seeking compensation, medical expenses, and potential damages.

6. Resourse

In Alberta contact OH&S
Phone: 780-415-8690 (Edmonton)
Toll free: 1-866-415-8690
TTY: 780-427-9999 (Edmonton)
TTY: 1-800-232-7215
Or online at Alberta OH&S

In BC contact WorkSafeBC - they have a dedicated form and website to track worker exposure to any hazardous substance. Details can be found on their website:
www.worksafebc.com/en/claims/report-workplace-injury-illness/types-of-claims/occupational-diseases

In the US contact - Lanier Law Firm in Houston Texas
lanierlawfirm.com/mesothelioma/asbestos-exposure/

Contact WHS Today

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Industrial Hygienist Assitance During Wildfire Season

6/12/2023

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AQI Versus AQHI

Air pollution is a serious public health issue that affects millions of people around the world. In Canada, the Air Quality Health Index (AQHI) is a tool that is helping to raise awareness about the risks associated with air pollution and to provide the public with accurate and timely information about air quality.

Compared to other air quality indices, such as the Air Quality Index (AQI) used in the United States, the AQHI takes into account the effects of multiple pollutants on human health. While the AQI focuses on individual pollutants and their associated health risks, the AQHI provides a single measure of air quality that reflects the overall impact of the air pollution mix.

The AQHI is calculated using data from air quality monitoring stations across Canada, and it is updated hourly to provide the most up-to-date information about air quality. The AQHI is also designed to be easy to understand, with a scale ranging from 1 to 10+ and associated health messages that provide advice on how to reduce exposure to air pollution.

Compared to the AQI, which uses a scale ranging from 0 to 500, the AQHI is more sensitive to moderate levels of multiple pollutants, which is one of the objectives of this new formulation. The AQHI is also more accurate in reflecting the overall impacts of the air pollution mix and the occurrence of effects at low levels of exposure.

AQHI

Overall, the AQHI is an important tool for protecting public health and promoting awareness of the risks associated with air pollution. By providing accurate and timely information about air quality, the AQHI empowers individuals to make informed decisions about their exposure to air pollution and take steps to protect themselves and their families.

One of the key strengths of the AQHI is its ability to communicate air quality information in a way that is easy to understand and act upon. The AQHI scale ranges from 1 to 10+ and is accompanied by health messages that provide advice on how to reduce exposure to air pollution. This makes it easier for individuals to understand the risks associated with air pollution and take appropriate action to protect their health.

What is PM2.5

Relative Particle Size - source EPA

PM stands for particulate matter (also called particle pollution): the term for a mixture of solid particles and liquid droplets found in the air. Some particles, such as dust, dirt, soot, or smoke, are large or dark enough to be seen with the naked eye. Others are so small they can only be detected using an electron microscope.
Particle pollution includes:

PM10 : inhalable particles, with diameters that are generally 10 micrometers and smaller; and
PM2.5 : fine inhalable particles, with diameters that are generally 2.5 micrometers and smaller.
- How small is 2.5 micrometers? Think about a single hair from your head. The average human hair is about 70 micrometers in diameter – making it 30 times larger than the largest fine particle.

AQI

AQI uses a scale ranging from 0 to 500, and is easier to use by Industrial Hygienist since it can be calculated with one parameter such as PM2.5. If you're interested in learning more about air quality and the AQI, the website airnow.gov is a great resource. The website provides information about the AQI and how it is calculated, as well as real-time air quality data for cities across the United States.

How to Access Air Quality using AQI and AQHI

Direct reading instruments such as particulate monitors can be used by industrial hygienists to determine the AQHI and AQI at a job site. These instruments measure the concentration of specific pollutants in the air in real-time, allowing for immediate assessment of air quality.

To determine the AQHI, the industrial hygienist would need to measure the concentrations of nitrogen dioxide (NO2), ozone (O3), and particulate matter (PM2.5) using direct reading instruments. The readings would then be used to calculate the AQHI using the formula provided by the Canadian government. The formula for the AQHI based on PM2.5 is:

AQHI Calculation for PM2.5

The formula below is the AQHI is available on line https://www.airnow.gov/aqi/aqi-calculator-concentration/ and interprets the results and provides recommendations without having to look them up manually.

Screenshot AQI Calculator

What's the Air Quality In My Neighborhood

Click the link below to see the AQI levels in Western Canada. The map is interactive and can be used to look up the AQI around the world.

Current Air Quality - Western Canada

Interpreting PM2.5 Readings

AQHI Tables

AQHI Risk Rankings - Source Environment Canada

AQI Tables

AQI Risk Rankings - Source Airnow.gov

How to Protect Workers

In Canada the Occupational Health and Safety Regulations do not specifically address how to protect worker with respect to wildfire smoke. However other parts of the regulations do apply such as:

Controlling Worker Exposure – hazard assessments and implementing controls
Personal Protective Equipment
Emergency Preparedness and Response

WHS Occupational Hygienist can assist employers in conducting a risk assessment and implementing an exposure control plan to minimize worker exposure to wildfire smoke. Also check out the services WHS can provide following a wildfire in your area or fire in your home or business.

Check Out WHS Disaster Response Services

Contact WHS Occupational Hygienist

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CDC's New Building Ventilation GuidELINE

5/18/2023

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CDC's New Building Ventilation Guidance Calls for 5 ACH and Upgraded Filters: Creating Healthier Indoor Environments

Recently, the Centers for Disease Control and Prevention (CDC) released new building ventilation guidance that emphasizes the importance of adequate airflow and upgraded air filtration systems in reducing the transmission of airborne pathogens. The guidance highlights the target of achieving at least 5 air changes per hour (ACH) and utilizing enhanced filters to improve indoor air quality. This development has significant implications for building owners, managers, and individuals concerned about their health and well-being. In this blog post, we will explore the key takeaways from the CDC's new guidance and its importance in creating healthier indoor environments.

The Importance of Ventilation and Filtration

The Importance of Ventilation and Filtration:
Proper ventilation and filtration play a crucial role in reducing the concentration of airborne contaminants, including viruses, bacteria, and other pollutants. The CDC's guidance underscores the need to increase the rate of air exchange in indoor spaces, aiming for a minimum of 5 ACH. This means that the volume of air within a space should be completely exchanged five times per hour, effectively diluting and removing potential pathogens.

Furthermore, the CDC recommends upgrading air filtration systems to MERV 13 filters or higher, as they are more effective in capturing smaller particles. Upgraded filters can help trap a greater number of airborne particles, including respiratory droplets that may contain viruses, thus reducing the risk of transmission.

Benefits of the CDC's Guidance

Adopting the CDC's building ventilation guidance offers several benefits. First and foremost, it can help minimize the spread of airborne diseases, including respiratory infections like COVID-19, influenza, and others. Improved ventilation and filtration systems can effectively reduce the concentration of viral particles in enclosed spaces, providing a safer environment for occupants.

Implementation Challenges and Considerations

Moreover, implementing the recommended guidelines can enhance overall indoor air quality, benefiting the health and well-being of building occupants. Good indoor air quality has been linked to improved cognitive function, productivity, and overall comfort. By prioritizing ventilation and filtration, building owners and managers demonstrate a commitment to occupant health and create spaces conducive to optimal performance.
Implementation Challenges and Considerations: While the CDC's guidance provides a valuable framework for improving indoor air quality, it is important to acknowledge that implementation challenges may arise. Upgrading ventilation systems and filters may require financial investment and technical expertise. Building owners and managers should carefully evaluate their existing systems and consult with HVAC professionals to identify the most suitable solutions for their specific circumstances.

Additionally, balancing increased ventilation rates with energy efficiency is a crucial consideration. It is important to strike a balance that ensures adequate air exchange without causing excessive energy consumption or compromising thermal comfort.

Industrial Hygiene Discussions

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Don Fillion, CIH, ROH, CRSP