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If you work with or near hazardous chemicals, you should know the appropriate safety precautions to take to work safely and avoid injury. However, accidents can happen - and when a corrosive chemical gets into your eyes or on your face or body - the first few seconds are the most critical for preventing injury. If treatment is delayed, even for a few seconds, serious injury may be caused.
That's where emergency showers and eyewash stations come in, providing workers with on-the-spot decontamination and the ability to flush hazardous substances away, and minimize the effects of accidental exposure to chemicals.
There are different types of units available - emergency showers, eyewash stations and combination units. The type of protection selected should match the hazard, and the chemicals that are used at the workplace. Conducting a job hazard analysis will help you identify this information.
Emergency showers are designed to flush the user's head and body. These are NOT for flushing the eyes, because the water pressure may be too great and could damage the eyes.
Eyewash stations are designed to flush the eye and face area only.
Combination units contain both an emergency shower and an eyewash station and enable any part or all of the body to be flushed. They are the most protective emergency devices and should be used wherever possible.
The American National Standards Institute (ANSI) Standard for Emergency Eyewash and Shower Equipment (ANSI Z358.1-2009) recommends that the affected body part must be flushed immediately and thoroughly for at least 15 minutes using a large supply of clean fluid under low pressure. Water does not neutralize contaminants -- it only dilutes and washes them away. This fact is why large amounts of water are needed.
Other references recommend a minimum 20-minute flushing period if the nature of the contaminant is not known, however, the time can be modified if the identity and properties of the chemical are known. For example:
Alerts & Bulletins
Saw mills are just one of the many workplaces that generate large amounts of wood dust. Others include construction sites, wood floor refinishing and installation, pulp and paper manufacturers, carpentry shops and logging sites.
Wood dust is combustible, and must be safely removed before it builds up and causes a fire or combustible dust explosion. Using vacuum trucks can be a safe and effective method of removing wood dust from buildings, machinery, and equipment.
Static electricity is one of the hazards that employers and vacuum truck operators need to be aware of when vacuuming wood dust. Static electricity discharges can ignite wood dust, and therefore must be eliminated or adequately controlled during vacuuming.
WorkSafeBC issued a bulletin with some important steps that vacuum truck operators can take to minimize the hazards of static electricity discharges when they are removing wood dust, as well as advice on the right equipment and safe work procedures to use. Employers who hire vacuum truck operators to remove wood dust from their premises should also be aware of this information.
Choose suitable hoses, nozzles, and connectors
When vacuuming wood dust or other dry combustible materials, use only conductive hoses, nozzles, and connectors that are designed to be used with those types of materials.
When wood dust is vacuumed through a hose (or pipe) the friction between the dust and the hose can generate static electricity. Hoses made of material that conducts electricity and which are properly grounded are safe to use. However, hoses that are made of plastic or other materials that don't conduct electricity are unsafe to use unless they are embedded with a grounding wire to prevent static build-up.
Also, hoses with ridged or corrugated surfaces inside the hose should not be used for vacuuming wood dust. The ridged interior surfaces cause more physical interaction between the dust particles, and between the dust particles and the hose, and increase the risk of igniting the dust.
Ensure proper grounding and bonding
Before vacuuming starts, trucks should be grounded directly to the earth or another verified ground, and the hoses and all other parts of the truck and vacuum system should be properly bonded to each other. Take extra care that the bond between the truck's air pollution control device (baghouses) and its filter cages is adequate because the large volumes of dust and air that flow through them increase the risk of ignition.
Inspect and maintain equipment
Regularly inspect and properly maintain vacuum trucks, giving extra attention to hoses, baghouses, vacuum pumps, collection boxes, and filtration systems. Test the conductive hoses regularly and stop using them if they have lost their conductivity.
Follow safety requirements to protect workers
Vacuum truck operators and employers who hire vacuum truck operators to remove wood dust should take these safety precautions:
Health and Safety To Go
This month's Health and Safety To Go! podcasts discuss ATVs in the workplace with tips on how to prevent injuries and feature an encore of summer sun safety with the Canadian Cancer Society.
Featured Podcast: Tips for a Safe Ride: ATVs and Work
With oversized, deep tread, low-pressure tires, relatively light weight, and easy manoeuvrability, all-terrain vehicles (ATVs) can go where other heavier, larger vehicles cannot. In this podcast, CCOHS explores using ATVs in the workplace and shares tips on how to prevent injuries.
The podcast runs 4:33 minutes. Listen to the podcast now.
Encore Podcast: Summer Sun Safety
Will you be working or playing outdoors this summer? Gillian Bromfield of the Canadian Cancer Society sheds some light on summer sun safety.
The podcast runs 3:44 Listen to the podcast now.
CCOHS produces free monthly podcasts on a wide variety of topics designed to keep you current with information, tips, and insights into the health, safety, and well-being of working Canadians. You can download the audio segment to your computer or MP3 player and listen to it at your own convenience... or on the go!
See the complete list of podcast topics. Better yet, subscribe to the series on iTunes and don't miss a single episode.
Workplace Health & Safety Matters
Fresh back from presenting at the Singapore Workplace Safety and Health Conference 2014, Steve Horvath, President and CEO of the Canadian Centre for Occupational Health and Safety shared his reflections in a recent blog post on the event and the theme, "Integrating Safety and Health: Towards A Holistic Approach".
I applaud the commitment by the most senior government officials in Singapore for showing leadership and enabling a whole nation to achieve a common goal of eliminating injury and illness in the workplace through political engagement. It not only provides a lot of momentum, but also confidence to health and safety practitioners when progressive policies are promoted by all levels of government and supported by labour and industry.
Government, labour and employers were present at the Singapore Workplace Safety and Health Conference 2014 to promote and understand the challenges and were committed to make this happen.
I am impressed by the broad level of commitment demonstrated by world-class health and safety organizations like the Workplace Health and Safety Institute (WHSI) and the Workplace Safety and Health Council. Their support comes from clear and consistent leadership from the highest levels of the national government. During various times of the ASEAN-OSHNET meetings and the conference, the Deputy Prime Minister and Minister of Finance, Senior Minister of State and Minister of Health and Manpower, and the Senior Parliamentary Secretary and Minister of Education and Manpower delivered addresses, while other senior Ministry officials were also in attendance. It is refreshing to see all of them speak of a singular vision for a Singapore without workplace injuries and illnesses and their support for the country's "Vision Zero" action plan for achieving their goals.
In his opening remarks, the Deputy Prime Minister and Minister of Finance for Singapore, Tharman Shanmugaratnam, acknowledged the challenge ahead but reaffirmed the government's resolve in achieving the OSH goals of the nation. He spoke of the need to integrate worker health issues with workplace safety, and for industry to take a holistic approach to OSH if they were going to eliminate injuries and illnesses in Singaporean workplaces - a problem that is costing the country 3.2% of their GDP. Consequently, OSH prevention strategies are recognized as part of the overall growth strategy for the region. A trade deal to be completed within the year with all the other ASEAN countries will include common standards on health and safety that are based on global best practices.
Other Ministers reiterated the key concept of adopting a holistic approach to protecting the safety, health and well-being of employees. Hawazi Daipi, the Senior Parliamentary Secretary for Manpower and Education noted that with Singapore's aging population and increasing life expectancy, all organizations have to put in place holistic intervention programs to ensure health and safety and a sustainable workforce.
With CCOHS recognized as a global leader whose expertise, infrastructure and capacities are viewed as true strengths, I was there to present evidence and data supporting the integration of health and safety with the business processes of an organization. It is always encouraging to see the enthusiasm that other countries show in learning about CCOHS' experiences and approach to prevention programs. It is a competitiveness issue for organizations. For a robust management system to exist, you have to consider OSH as part of the normal decision-making process with all employees. If it is seen as a separate program, it will not result in a cultural shift in the workplace because it will not become part of the normal decision-making process of the organization and will be perceived by management as part of the problem instead of part of the solution. What is necessary is worker engagement through leading by example, communication, coaching and management commitment.
Read Steve's blog, Workplace Health and Safety Matters.
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The Health and Safety Report, a free monthly newsletter produced by the Canadian Centre for Occupational Health and Safety (CCOHS), provides information, advice, and resources that help support a safe and healthy work environment and the total well being of workers.
© 2017, Canadian Centre for Occupational Health and Safety
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