Category: chemicals

NZ proposes new exposure levels on formaldehyde

The New Zealand of Department of Labour is continuing its negotiations on new exposure levels for formaldehyde.

The latest proposed exposure levels for formaldehyde are 0.3 ppm (8 hour TWA) and 0.6 ppm (STEL).  Currently the levels in New Zealand are 1ppm (ceiling).

According to US OSHA, it’s exposure standard is

1910.1048(c)(1)

TWA: The employer shall assure that no employee is exposed to an airborne concentration of formaldehyde which exceeds 0.75 parts formaldehyde per million parts of air (0.75 ppm) as an 8-hour TWA.

1910.1048(c)(2)

Short Term Exposure Limit (STEL): The employer shall assure that no employee is exposed to an airborne concentration of formaldehyde which exceeds two parts formaldehyde per million parts of air (2 ppm) as a 15-minute STEL.

WorkSafe BC says

BC‘s current 8-hour TWA of 0.3 ppm is well below levels capable of causing adverse health effects and protects the worker from the pungent, unpleasant odour of formaldehyde.

NZ DoL is also discussing dropping there exposure levels for soft wood dust from 5mg/m3 to 1mg/m3.

The cancer risks of formaldehyde have been investigated over some time and the weight of evidence shows that this chemical is a probable human carcinogen.

Kevin Jones

Man crushed by unstable stack

On 1 September 2009 there were early reports that

“… a man died at Stanhope in northern Victoria when a one-tonne bag of salt fell from a stack and crushed him at a cheese factory.”

Further details were revealed in a media report on 4 September 2009. The media officer for WorkSafe, Michael Birt, discussed the stacking of multiple, one-tonne, bags of salt.

“The improvement notice is requiring them to develop a safer system of work in relation to storing the salt because they can’t stack it three high in these bales which are about a metre tall,” he said.  “It’s symptomatic of what happens in typical cases after this, we look at it and we find the systems need to be further improved.  Our aim is to get safety improvements happening sooner rather than later and if those improvement notices are dealt with promptly everyone’s life moves on.”

WorkSafe informed SafetyAtWorkBlog that the 50-year-old man was at the base of a stack of three bags of salt.  Each bag had been placed in the factory on a pallet, so the stack from the floor was pallet – bag – pallet – bag – pallet – bag.  The bottom bag had leaked and has possibly destabilised the stack.  The stack fell, crushing the man.  There was not racking around the stack.

The bags (similar to the one pictured right) are large bale-type bags with handles.  The bags are used for a variety of contents and are in common use.

There were no witnesses to the man’s death on the Tuesday afternoon.  Gaffer tape was found near the man’s body

WorkSafe has placed a “do not disturb” notice on the fatality site and has formally directed the company to review its bulk handling procedures in the salt store.

WorkSafe Victoria has a range of advice and guidances concerning the bulk handling of raw material, a couple are below.

Kevin Jones

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James Hardie directors face the consequences of their poor decisions

SafetyAtWorkBlog has kept a watchful eye on the long saga involving the directors of James Hardie Industries and their mishandling of a compensation fund specifically established for victims of the company’s asbestos products.  The compensation fund story has been handled well by Gideon Haigh in his book on the company.

The saga has since evolved into one of the duties and actions of the board of directors, moreso than one of compensation.  Today, 20 August 2009, the previous directors will be told of the financial and professional penalties determined by the New South Wales Supreme Court.

The ABC News online has an article about the impending court decision but more relevantly to the OHS and compensation issues is the fact that the existing compensation fund runs out in 2011 and the company says that the current economic climate does not allow for any more funds.  For a company that has earned good profits from asbestos over many decades, two years of poor corporate performance does not seem to balance the scales.

Too many corporations are using the global financial crisis to mask their own management failings.  The United States and England have seen this more than most countries.

The ABC was able to interview the current CEO of James Hardie Industries, Louis Gries, who is not as damning of the past directors’ decisions as some might expect, and the reporter, Sue Lannin, asks many direct questions about the company’s responsibilities to victims of its products.  This interview deserves careful listening.

Company directors around Australia are watching how the court case ends and the size of penalties they may face if they make similar decisions.  The OHS element is oblique to the issue of directors’ responsibilities but it is the hot topic in Australia at the moment and many OHS professionals talk with these same directors.  It may be necessary to adjust one’s language or message when talking safety with them from tomorrow on.

Kevin Jones

Forest not required – indoor air quality and plants

Ever since modern offices have relied on air conditioning for ventilation, indoor air quality has been a contentious occupational issue from other people’s smells to thermal comfort to photocopier toner dust.

The prominence of air quality in offices as an OHS issue can be illustrated by a paragraph from the 1997 edition of Officewise when cigarette smoke remained a real hazard.  No mention was made of plants.

Air in offices may be contaminated by several different
sources, including odours and micro-biological and
chemical contaminants. In an office environment, the
quality of the air is often controlled through an air
conditioning system. A building’s air conditioning
system may be considered as its lungs. The function
of such a system is to draw in outside air, filter, heat,
cool or humidify it and circulate it around the building.
The system expels a portion of the air to the outside
environment and replaces this expelled portion with
fresh or outside air.

“Air in offices may be contaminated by several different sources, including odours and micro-biological and chemical contaminants. In an office environment, the quality of the air is often controlled through an air conditioning system. A building’s air conditioning system may be considered as its lungs. The function of such a system is to draw in outside air, filter, heat, cool or humidify it and circulate it around the building. The system expels a portion of the air to the outside environment and replaces this expelled portion with fresh or outside air.”

Continue reading “Forest not required – indoor air quality and plants”

OHS harmonisation – chemicals draft

As part of the Australian government’s program of national OHS harmonisation, Safe Work Australia has released “Proposed revisions to the workplace chemicals regulatory framework“.  This has been a long time coming.

This is not yet open for public comment but is a great indication of what Australian workplaces that handle chemicals may be in for.  Not being experts in dangerous goods, SafetyAtWorkBlog will let the document speak for itself.

“This National Standard marks a significant change in the approach to the classification and communication of chemical hazards in the workplace. The National Standard adopts the principles of the Globally Harmonised System of Classification and Labelling of Chemicals (GHS) published by the United Nations.  The adoption of the GHS in the workplace chemicals framework serves two important purposes:

  • it represents best practice in the classification of chemicals and the communication of hazards using a standardised approach that will allow harmonisation amongst international trading partners; and
  • it allows the promulgation of a streamlined framework for identifying, assessing and controlling chemical hazards in the workplace, where hazards may be related to health or physical effects.

The previous national framework for managing chemical hazards in the workplace was based on a distinction between hazardous substances and dangerous goods. Hazardous substances were associated with human health effects (for example acute toxicity or carcinogenicity) and dangerous goods were predominantly associated with physical effects (for example corrosivity, flammability). In many cases, a single chemical would be classified as both a dangerous goods and a hazardous substance, triggering the need to comply with two distinct regulatory frameworks.

This National Standard provides a consolidated basis for the control of health hazards and physical hazards arising from the presence of chemicals in the workplace. In this framework chemical substances, mixtures and articles can be classified as “hazardous chemicals”― a term that includes both health hazards and physical hazards.”

From a brief look, it is noted that MSDS loses a letter to become SDS, Safety Data Sheets.  The principal reference codes and guidelines such as those below are now being reviewed and the public comment period began on 31 July 2009.

  • Approved Criteria for Classifying Hazardous Chemicals.
  • National Code of Practice for the Labelling of Workplace Hazardous Chemicals
  • National Code of Practice for the Preparation of Safety Data Sheets
  • National Standard for the Synthetic Mineral Fibres
  • National Standard for the Control of Inorganic Lead at Work

Because Australia will follow the guidelines of the Globally Harmonised System of Classification and Labelling of Chemicals, the issue of environmental impact of work-related chemicals will also become relevant.  The proposal says

“A full implementation of the GHS would require the provision of appropriate information on labels and safety data sheets (SDS) where a chemical is classified as an environmental hazard.”

All of this sounds like a big shake-up for many Australian businesses and safety advisers but there is still time for the government and Safe Work Australia to provide enough information to minimise its impact.  The release of the proposed revisions prior to public comment is a positive sign.

Kevin Jones

Nanotechnology safety – literature review

Earlier in June 2009 The European Agency for Safety and Health at Work released a literature review entitled “Workplace exposure to nanoparticles”

Pages from Workplace exposure to nanoparticles[1]The EU-OSHA says

“Nanomaterials possess various new properties and their industrial use creates new opportunities, but they also present new risks and uncertainties. Growing production and use of nanomaterials result in an increasing number of workers and consumers exposed to nanomaterials. This leads to a greater need for information on possible health and environmental effects of nanomaterials.”

The report is available for download by clicking on the image in this post.

Kevin Jones

Corporate health adviser’s recommendations on swine flu

Recently SafetyAtWorkBlog wondered why the ACT OHS Commissioner referenced a commercial website instead of a government authority.  The commercial website was www.fluthreat.com operated by HSA Group which since early April 2009 is part of Medibank Private.

Fluthreat.com.au provides information on its Flu At Work page that is very flimsy and seems to be  intended to generate further enquiries to its commercial advisory service.  We’re not comfortable with that or the lack of badging from the parent company but…….

SafetyAtWorkBlog put some questions to HSA Group/Medibank and received the following responses from their media advisor over a week later.  We could be picky but we have decided to let the responses speak for themselves.

The questions were based on the bulletpoints listed on the Flu At Work page in order to flesh out the advice to a more practical level.

What does HSA Group recommend for basic personal respiratory hygiene methods?

HSA’s fluthreat website covers basic respiratory hygiene considerations.  Personal habits that we all should adopt include covering mouths when coughing and sneezing, using tissues and disposing of them properly, and regularly washing of hands.

In this time of swine flu, is the old way of throwing tissues in a waste basket no longer the right option?

Using a waste basket is fine.  The important thing is the waste is disposed of appropriately, and the waste basket does not require excessive handling in the disposal process.

Handwipes and gel have issues of their own – should they be applied after handwashing or instead of, should they be used after each sneeze or cough? What does HSA recommend?

Considerations of personal  hygiene should be a regular occurrence – not just simply after each sneeze or  cough.  Handwipes and gels are for occasions when you can’t wash your hands – it is not necessary to use both.  Handwipes and gels should be alcohol based, which has been shown to be effective in killing influenza type viruses.

Regarding adequate cleaning of surfaces and equipment, should this be undertaken by the users of the equipment or should cleaning contractors be contacted in order to upgrade their processes?

Unfortunately there is no one simple answer to this question.  Every business operates differently, and therefore will require a different response to a pandemic.  We encourage all businesses to have a pandemic plan, which will guide the business wide response.

Certainly cleaning of surfaces and equipment should be considered in the context of an organisation’s pandemic plan, and may include having staff take additional care for hygiene and cleaning, or having cleaning contractors upgrade their processes.  The appropriateness of such considerations are linked to the pandemic phase & an organisation’s response strategy in the context of their pandemic plan.

Regarding telephones, which are the closest item most office workers have to their mouths, years ago there were phone cleaners who  physically came to the office to clean and disinfect  handsets. Would HSA recommend this service be reinstated?

These services are still available for businesses who want them.  Alternatively staff can be trained to do it themselves with alcohol based wipes.  Again the specific needs of businesses will vary, and cleaning of telephone handsets should be set out in the pandemic plan.

In a closed environment, such as an office, where possible, should ventilation be increased by opening a window?  Some office buildings turn off they ventilation overnight even when nightshift workers are in the building.  Does HSA believe that nightshift workers could be at increased risk of contracting influenza?

Ventilation is important in workplaces, and not just due to swine flu. Where windows can be opened without affecting the air-conditioning flow this will help with ventilation. Air conditioning should remain on if people are present in the building.  However there is no evidence that nightshift workers are at an increased risk of contracting influenza – it is the behaviour of workers and their levels of personal hygiene that are the strongest influence on this.

Regarding encouraging sick persons to stay at home, why only “encourage”, when  employers have the legislative obligation to not place their employees at risk? What if the employee has shown no symptoms of influenza but may be infectious due to contact with a family member who is sick?

Employers should have policies in place that articulate how staff should  behave in such circumstances, and ideally a plan that covers pandemics specifically.  There is only a very small risk of people being infectious prior to symptoms appearing.

Sending workers home after the illness has appeared is an acknowledgement that illness is already present in the workplace.  In this instance, what would HSA advise the employer to do?

Employers should continue to activate their pandemic plan, which will trigger workplace specific staff communications and contingency plans.

Does HSA recommend the wearing of facemasks as a suitable control measure for anyone who may come to work sneezing (for whatever reason)?

Facemasks can be very helpful in controlling the spread of respiratory diseases.  However it should be noted that a sneeze does not necessarily equate to H1N1 or seasonal influenza.  A diagnosis of suspected H1N1 or seasonal influenza requires consideration of a number of other factors.

Regardless of the further information from HSA Group/Medibank, SafetyAtWorkBlog still recommends that the best advice is available from the relevant health authorities in your State or country.

Kevin Jones

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