Playing and working in heat is “hot topic” in the media for at least a few days every year at the Australian Open Tennis. It affects players but also other people working and volunteering at the tennis; umpires, line umpires and children “working” as ball retrievers and ferrying sweaty towels to and fro the players.
Sports Medicine Australia publish heat guidelines summarized below.
Tennis Australia used to publish policies – now it just seems to say that “policies are in place”. Both use the Wet Bulb Globe Temperature index. Tennis Australia also used regular “dry bulb”.
The Sports Medicine Australia guidelines say at 30 WBGT to consider postponement as the risk is extreme. But Tennis Australia raise this to 32.5 WBGT – AND – it has to be above 40C as well.
Moving the goalposts is obviously more convenient for the conduct of the tournament but is it safe/reasonable to operate outside the guidelines?
Image: Herald Sun
|Wet Bulb Globe Temperature
||Sports Medicine Australia:
|Moderate to high risk
Don’t worry mate, act cool?
|High to very high risk
Risk of thermal injury is high/very high. Limit intensity. Limit duration to less than 60 minutes per session.
Don’t worry mate, act cool?
Risk of thermal injury is extreme. Consider postponement to a cooler part of the day or cancellation.
Don’t worry mate, act cool?
|>32.5 WBGT AND >40 celcius
|“Policies are in place”
>32.5WBGT combined with >40C
“Policies are in place”. Whatever they are. The policies used to be public.
The UK Office of Road and Rail released its annual safety report last month.
Signals passed at danger was 247. The number of signals passed at danger has remained thereabouts 250-300 for the last nine years.
The relative risk is measured based on distance exposure. It is referenced at September 2006 – this is “100%”. Again over the past nine years there’s little obvious trend outside the 40-60% range. The latest figure is one of the lowest, but it also looked that way in 2011.
Source: Marked up chart from: Office of Rail and Road, UK 2017, “ORR’s Annual Health and Safety Report of Performance on British Railways: 2016-17, July 2017, p. 41.
Verdict summary – Shane Brown v Pencon Australia Pty Ltd – S CI 2015 05568
I was involved in a case recently about a ride-on stand-up reach fork truck or more often called in Australia a forklift. This type of truck is typically used in warehousing.
“On 6 June 2017, a civil jury of six found that an employer was not liable for an injury … he sustained while operating a stand-up forklift. The plaintiff alleged that his foot slipped from the forklift pedal and became crushed between the forklift and the wall of the employer’s premises….
It was alleged that the employer was liable in both negligence and for breach of statutory duty (the Occupational Health & Safety Regulations 2007) in relation to, among other things, its failure to provide a safe system of work and allowing the plaintiff to operate the forklift in wet conditions.
The jury found that there was no negligence on the part of the defendant which caused injury to the plaintiff. The jury also found that there was no breach of statutory duty on the part of the defendant.”
A jury does not give its reasons. The summary is here.
Among the issues relevant to ride on fork trucks are:
- ride on fork trucks are generally “one wheel drive”
- this wheel also provides the braking
- deceleration is by reversing the motor
- braking is by a conventional brake operated in reverse (normally applied but deactivated by standing on the pedal)
- speed and braking standards of forklifts (e.g. US standard B56.1)
- the trucks generally do not have a door
This morning a plane crashed into a shopping centre built near the end of an airport runway at Essendon Fields, Melbourne, Australia.
This crash area was relatively recently simply a flat area of grass near the end of the runway.
A good outcome crashing into grass is not assured, but it’s usually better than a building.
Before the shopping centre
Images from http://1945.melbourne/
Ardent now say they will demolish the ride in this release to the Australian Stock Exchange.
I see that there may be good reasons for this decision. Perhaps those close to the victims prefer that it be demolished. Perhaps it has no commercial future as a place where patrons could find enjoyment.
But closing the ride while keeping it basically intact for at some time would better. The demolition could be unhelpful in regard to learning from this accident. Losing the ability to review this situation so soon relies on the initial accident analysis being perfect. It might be perfect but then again it might not. Secondly even if it is perfect, a demolition removes the opportunity for anyone else to read the reports on this accident with the benefit of standing in front of the machine in question. In terms of preventing accidents, much more would be gained by others in the amusement ride industry or broader engineering accident analysis community if they have the chance to see the machine. I spend most of my time looking at incidents that are several years old. Still having systems in place is generally a big help.
See Speculation about accidents is helpful, it’s just not enough (e.g. Dreamworld)
“Speculation is not helpful”. Regarding accidents, YES, or NO?
On the NO side. The Safety Institute says no. “Safety Institute of Australia calls for calm in relation to Dreamworld tragedy“. Kevin Jones argues a similar theme.
I say YES. I see the point of the Safety Institute article. I think it is to caution against jumping to a conclusion. But the phrase “speculation is not helpful” caught my attention.
But when trying to work something out, speculation is helpful. More than that, it’s vital. Speculation is where it begins. Possibilities need to be eventually evaluated – tested with science, engineering, logic, facts, analysis – but the process begins with ideas, guesses, hypotheses, questions, hunches – speculation. A narrowing or testing of these possibilities is then needed.
While it is not a good idea to jump to a conclusion, it is a good idea, to consider many possibilities about where to jump in the end. Speculation is what is needed, it’s just not enough on it’s own.
This photo is from The Straits Times @STForeignDesk
“well you’re ?%$* out of luck”*. This is a quote from Bernard Keane of Crikey as per the image below. It’s not a particularly clearly articulated statement. There could be some debate about what it means. My reading is that it was an attempt to convey in the negative Crikey’s opinion of my suggestion that Crikey consider a retraction of this article.
My interest in it began here with a tweet from Kevin Jones. It lead me to the Crikey article. The article sought to create a link between the presence of the ABCC and workplace fatalities. [Side notes: For some worthwhile reading on safety have a look at Kevin Jone’s blog. And see some history about the ABCC here.]
Crikey’s claim seemed to me to be a long bow. This prompted me to conduct some research. The graph below from the latest report from Safe Work Australia illustrates workplace traumatic fatalities across all injuries.
Safe Work Australia 2016, Work Related Traumatic Injury Fatalities, Australia 2015, Safe Work Australia, Canberra.
It shows that the rise in construction fatalities that followed the ABCC’s introduction in 2005 occurred more broadly. It seems to me that the relationship suggested between the ABCC and construction safety may be the result of a confusion between causation and coincidence.
Consideration should be given to retraction of the article in my view for two reasons:
(a) Misdirection about the causes of workplace injuries can never be helpful. It distracts efforts from useful interventions.
(b) And further, these statistics represent real people who lost their lives. They are not a plaything to bolster a political augment with claims that are on shaky if any footing.