Formaldehyde upgraded to human carcinogen

On 4 November 2009, the United States’ National Toxicology Program (NTP) upgraded formaldehyde to a “known human carcinogen”.  This widely used chemical, principally in wood products, has been suspected of being carcinogenic for some time.

The suspicion was a major reason why, in Australia, Comcare issued a cautionary safety alert on using some shipping containers as converted accommodation.  But the Comcare advice was based, and reasonably so, on a manufacturers’ material safety data sheet (MSDS).

One such MSDS selected at random from the Australian internet sites has this to say about formaldehyde:

Reported fatal dose for humans: 60-90 mL

Oral LD50 (rat): 800 mg/kg

Inhalation LC50 (rat): 590 mg/m3

Low concentrations of formaldehyde may cause sensitisation by skin contact. Formaldehyde vapour is irritant to mucous membranes and respiratory tract. Asthma like symptoms have occasionally been reported following inhalation.

Animal studies have shown formaldehyde to cause carcinogenic effects. In particular, chronic inhalation studies in rats have shown the development of nasal cavity carcinomas at 6 and 15 ppm. These cancers developed at concentrations which produced chronic tissues irritation and would not be voluntarily tolerated by humans. [IPCS Environmental Health Criteria 89, Formaldehyde, World Health Organisation [WHO], Geneva, 1989.]

Some positive mutagenic effects have been reported for formaldehyde. Available animal data do not show embryotoxic or teratogenic effects following exposure to formaldehyde.

The NTP notes that formaldehyde effects have now been identified as having a role in leukaemia and not just localised inhalation-related cancers.

The MSDS is dated 2004 and Australian OHS legislation only requires MSDS to be updated at five-yearly intervals.  Of course they can be updated more frequently should the employer chose or, perhaps if the manufacturer advises them of a reclassification.

It is interesting that a 2004 MSDS still refers to WHO data that is fifteen years old and that the reference is to a non-Australian criterion.  It is accepted that chemical reclassification and research are long processes but what should the updating timeline be now that the US has made this significant re-categorisation?

Perhaps the Australia classifications will gain speed given that the more compatible European re-categorisation of formaldehyde, and other chemicals, was announced overnight.  The EU-OSHA website states

“Formaldehyde was confirmed as carcinogenic to humans. There is sufficient evidence in humans of an increased incidence of nasopharyngeal.”

However the human leukaemia issue was discusses in the evaluation summaries:

“The Working Group was almost evenly split on the evaluation of formaldehyde causing leukaemias in humans, with the majority viewing the evidence as sufficient for carcinogenicity and the minority viewing the evidence as limited.  Particularly relevant to the discussions regarding sufficient evidence was a recent study accepted for publication which, for the first time, reported aneuploidy in blood of exposed workers characteristic of myeloid leukaemia and myelodysplastic syndromes with supporting information suggesting a decrease in the major circulating blood cell types and in circulating haematological precursor cells.  The authors and Working Group felt this study needed to be replicated.”

Given that wood products that contain formaldehyde are used frequently in cabinet-making it is fair to expect MSDSs and OHS guidances on hazardous substances and wood dusts would be reissued and databases updated fairly quickly.  Just as important is the fact that particle boards are commonly sold in hardware and timber outlets in Australia and that Spring and Summer is often the DIY peak.

It is not hard to picture an unscrupulous media outlet generating a panic about the presence of formaldehyde in these products regardless of how the chemical is bound or whether inhalation risks are minimised.

Kevin Jones

Recent WorkSafe Victoria prosecutions

Over the last two weeks, WorkSafe Victoria has released over a dozen reports and summaries about prosecutions over OHS breaches.  Some have been highlighted in SafetyAtWorkBlog posts but there are too many for us to cover in detail or to expand upon.

Below is a list of those prosecution summaries

A Bending Company Pty. Ltd. – 8/12/09
Summary: Crush injury

Compass Recruitment Australia Pty Ltd – 8/12/09
Summary: Unguarded Plant/Labour Hire

McCain Foods (Aust) Pty Ltd – 7/12/09
Summary: Lack of isolation procedures, instruction and training

Barro Group Pty. Limited – 7/12/09
Summary: Fatality (crush injury) and a failure to provide and maintain for its employees, a safe working environment that was without risks to health.

Alan Mance Motors (Melton) Pty Ltd – 1/12/09
Summary: Explosion

Victorian State Emergency Service Authority – 30/11/09
Summary: Fatality, Volunteers, Employer, Drowning

Dynamic Industries Pty Ltd – 25/11/09
Summary: Fall from height – Fatality

The Inflatable Event Company Pty Ltd – 25/11/09
Summary: Failure to inform, instruct, train and supervise

Transglobal Shipping & Storage (Vic) Pty Ltd – 25/11/09
Summary: Forklifts, Failure to comply with a Prohibition Notice

Andrew Irvine – 25/11/09
Summary: Fall from height – fatality

Canningvale Timber Sales Pty Ltd – 25/11/09
Summary: Unguarded Plant

John Mavros – 25/11/09
Summary: Unguarded Plant

Shane Grigg -v- The Precast Company Pty Ltd – 16/11/09
Summary: Fail to provide suitable employment

A good book of safety solutions case studies

Australia has many safety awards programs.  SafetyAtWorkBlog has reported on some of the practical solutions from the awards and lamented how the prominence of such solutions fades quickly as the mainstream media ignores them.  The blog has also shown examples of a hard copy solutions database that existed in Victoria and Australia for a couple of decades.

The European Union’s Agency for Safety and Health at Work has recently released, online, a publication in support of its risk assessment campaign that shows how safety solutions can be presented and shared without worrying about commercial-in-confidence or intellectual property.

Jukka Takala, Director of EU-OSHA, says in his foreword

“This report supports the campaign by providing information on successful interventions in the workplace illustrating how the hazards identified after a risk assessment can be eliminated or controlled. The report is aimed at those who are responsible for carrying out risk assessments in the workplace and for preparing decisions on risk elimination or control measures.”

The report, “Assessment, elimination and substantial reduction of occupational risks“, also provides a list of some very useful elements for preventative safety

“The employer shall implement the measures (necessary for the safety and health protection of workers) on the basis of the following general principles of prevention:

(a) avoiding risks;
(b) evaluating the risks which cannot be avoided;
(c) combating the risks at source;
(d) adapting the work to the individual;
(e) adapting to technical progress;
(f) replacing the dangerous by the non-dangerous or the less dangerous;
(g) developing a coherent overall prevention policy;
(h) giving collective protective measures priority over individual protective measures;
(i) giving appropriate instructions to the workers”

The report is very useful in its clarification of the role and potential benefits of risk assessment.  Each solution is described, in detail, as a case study and the report includes guarding issues, manual handling and psychosocial hazards.  On the latter category, here is the summary for psychosocial hazards in hospitals

“Stress in hospitals – assessment of psychosocial and physical risks

Hospital work is known to be physically and psychologically demanding.  A pilot project was therefore set up in a hospital with 470 employees to assess workplace risks and organisational aspects.  The workers were exposed to physical strain, risks from chemical and biological agents and psychosocial strain.  They were also stressed by administrative tasks. After the assessment the results were analysed, action plans drawn up and measures implemented.  Risk assessment became a standard part of quality and health management systems, including training.”

One of the particularly interesting element in this program was that one of the first sources of information it used was quality management documentation.  Quality management is one of the most under-utilised sources of OHS and strategic planning data.  As long as quality managers do not perceive quality as a business element above that of safety, environment or any other, as long as they accept that each element is of equal importance in integration of management system, the quality data will be indispensable.

The quality data is followed up by interviews with middle- or line managers, questionnaires and observations.

Of all of the control measures, this organisational change was very clever:

“The administrative tasks, in particular, were perceived by the nurses to be distracting and onerous.  They felt that paperwork kept them away from important care work.  Consequently, administrative tasks were delegated to the night shifts, where there was more time to devote to them as the amount of care work fell at night.”

This looked at workload in a peak/off-peak context that fits with the natural rhythm of the clients.  The paperwork night-shift may be a suitable solution for other workplaces and the night-shift workers may have increased productivity due to the lack of distractions.

EU-OSHA keeps producing reports and publications that call out for a broader readership than Europe and this is a great example.

Kevin Jones

OHS for volunteers is still not working

Most Australian States’s OHS laws have encompassed workplace risks fro those who enter the enter the workplace and for volunteers.  The issue came up again with the recent review process on model OHS laws.  However a recent national survey by Volunteering Australia found that

“30% of [over 1400 volunteer] organisations surveyed have not been able to access adequate information about the protection of volunteers under occupational health and safety legislation.

Although individual volunteers overwhelmingly see OHS resources as having been positive.

“467 (26%) volunteers reported that OHS had a positive impact on them in the past 12 months, while only 130 (7%) reported that it had a negative impact.”

The positive position was slightly lower than the 2008 survey results (30%)

Volunteering Australia should be applauded for considering OHS in its survey.  Many organisations, particularly community organisations, are not so upfront on the issue.

Volunteering Australia is aware of the national OHS model review and are preparing for the additional overt relevance of volunteers in OHS law, but Volunteering Australia tells SafetyAtWorkBlog that they chose not to make a submission on the OHS model laws.

Kevin Jones

Contradictions on endosulfan in fish hatchery

Earlier in 2009, SafetyAtWorkBlog reported on concerns over a possible cancer cluster near a fish hatchery in Queensland.

The final report of the Queensland Government’s inquiry, Noosa Fish Health Investigation Taskforce, is not due until February 2010 but the Federal Government’s Australian Pesticides and Veterinary Medicines Authority has released a statement entitled “Endosulfan Ruled out as a Potential Cause of Noosa Fish Health Issues”.  In that article APVMA states

“The Noosa Fish Health Investigation Taskforce has at this point eliminated endosulfan as a potential cause of deaths and deformities at a commercial fish hatchery at Noosa in the six events being investigated.  Endosulfan was not used by the neighbouring macadamia property during the period under investigation.  There was also some suggestion that because the commercial hatchery uses river water and fish from the river in its operations, pesticides in the Noosa River may have been involved in the incidents reported.  However, environmental monitoring of water from the Noosa River and its feeder lakes has not indicated that endosulfan is present at concentrations that would be harmful to aquatic life.”

The ABC reports on 7 December 2009 that

“…aquaculture veterinarian Associate Professor Matt Landos says there is new evidence that endosulphan may be a factor.

“The early reports from the task force did not identify endosulphan in any residue testing and as such it was considered a less likely potential cause,” he said.  “However, recent testing has identified the break-down product of endosulphan in the middle of Lake Cootharaba – in the middle of the Noosa system.”

Matt Landos is a member of the Queensland Government’s taskforce.

Kevin Jones

Workplace skin cancer risk remains high

The July 2004 edition of SafetyATWORK magazine contained an interview with Sam Holt the CEO of Australian company Skin Patrol.  The fascinating service of Skin Patrol was that they travelled the outback of Australia with a mobile skin cancer testing unit.  That is a big area to cover but with the increasing incidence of skin cancer and the acceptance of ultraviolet exposure as an OHS problem, the service seemed timely.

(The interview is available HERE)

SafetyAtWorkBlog was contacted by Skin Patrol in early December 2009 as it was releasing the findings of a survey of 1,000 outdoor workers.  Its survey has these key findings:

  • 2.5 times the national reported incidence of malignant melanoma
  • One in 10 patients had a lesion highly suspicious of skin cancer
  • 26% of patients were diagnosed with moderate to severe sun damage
  • 70% of patients diagnosed with a lesion suspicious of skin cancer were aged 40 years or greater
  • Over 90% of workers who attended the Skin Patrol clinic because they were worried about a particular spot or the condition of their skin had not had their skin checked in the past 12 months prior to the onsite clinic.

The company’s media release also states:

“The incidence of melanoma for all Australians currently sits at 46 in 100,000, however for those that work outdoors that figure jumps to 100 in 100,000.”

The risks from exposure to ultraviolet are well established and our understanding of the risks have changed considerably within one generation.  The Australian culture has changed to one of sun-worshipping to one where the wearing of hats is enforced at school, hard hats have wide brim attachments, and outdoor work is undertaken in long pants and long-sleeved shirts.  Occupational control measures have been introduced.

Of course, particularly in the construction industry, principle contractors still struggle in a getting compliance with the UV-protection policies but that’s the case for many OHS policies.

Skin cancer risks through high UV exposure are well-established OHS Issues but the reality still does not mean that controlling the hazard is easy to manage.  Culturally we still want to have a tanned complexion even if it is sprayed on.  Tanned skin is still synonymous with good health even though the medical evidence differs.

Skin cancer risks in the workplace are simply another of those workplace hazards that are ahead of the non-workplace culture and that safety professionals need to manage.  The attraction with this hazard is that there is no disputing the evidence.

Kevin Jones

Australian OHS statistics just released

Safe Work Australia has released a couple more of its annual statistical reports about workplace injuries and fatalities.

The report that covers 2006/07 ( Work-Related Traumatic Injury Fatalities, Australia 2006-07) included this information in the Summary of Findings

“[In 2006–07]…a total of 453 work-related traumatic injury fatalities in Australia during 2006–07.   In 2006–07, just over half (237) of all work-related injury fatalities resulted from road crashes.

Of the 453 people who died of work-related injuries, 295 (65%) died of injuries sustained while working, …a 9% increase over the previous financial year.

In addition to the Working fatalities; 93 workers died from an injury sustained while travelling to or from work … and 65 people died of injuries received as a result of someone else’s work activity.”

There was also a report on notifiable incidents which covers 2008/09.  There are disparities in these statistics so it is important to read the reports and the research limitations, by the summary includes the following:

“In 2008–09 there were 177 notified work related fatalities — 151 workers and 26 bystanders.

  • Most fatalities were of men — 158 in total. There were 17 fatalities of women (including 11 bystanders) and sex was unknown for 2 other fatalities.
  • Four industries accounted for seven out of every ten notified work-related fatalities — 26% of fatalities occurred at a workplace primarily engaged in Agriculture, forestry & fishing; 18% in Construction; 15% in Transport & storage; and 9% in Mining.
  • The most common causes of the fatalities were Vehicle accidents (54 fatalities); Being hit by moving objects (34 fatalities); Falls from a height (20 fatalities); Being hit by falling objects (16 fatalities); and Drowning/immersion (14 fatalities).”

This report also includes details of “bystander fatalities” which are defined as “deaths of members of the public, such as passers-by or visitors to workplaces — including children — who die as a consequence of another person’s work activity.”  The report provides a good amount of details on these, and other, fatalities:

There were 26 bystander fatalities notified in 2008–09. These included:

  • 9 bystander fatalities caused by vehicle accidents, of these 6 occurred when cars and trucks collided.
  • 6 bystander deaths due to drowning. Of these, 3 occurred while white-water rafting and 2 occurred while snorkelling or diving.
  • 4 bystander deaths that occurred when the person was hit by a vehicle, of these, 2 deaths occurred while the vehicle was reversing.

Kevin Jones

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