ION Science Industry Blog

The latest industry news, knowledge and opinion.
Fire Investigation
5 April 2018

Sniffer Dogs for Fire & Arson Investigation?

The principal goal for fire investigators is figuring out how and where a fire started and where foul play is suspected, specially trained arson detection dogs are amongst their ‘tools of the trade’. It is common knowledge that dogs have a keen sense of smell, but the actual degree of sensitivity is amazing.

 

Smell is a dog’s primary sense, and it is 10,000 to 100,000 times more acute than humans.  That analogous to being able to see and recognise something 500 meters away, a dog could see and recognize the same object 5000 kilometres away.  Or, if you could taste a teaspoon of sugar in your coffee, a dog could taste a teaspoon of sugar in over 3.5 million litres of water. Read more! 

Fire Investigation
4 April 2018

5 reasons for using a PID for Arson Investigation

There are several good reasons to use a PID for arson investigation:-
  • PIDs are portable and battery powered making them ideal for field applications
  • PIDs are a quick, simple to use and accurate method for the detection of accelerants at a fire scene
  • PIDs are very sensitive to commonly found accelerants and will detect hundreds of gasses and vapours
  • PIDs are non-destructive and will not affect the air sample which can be captured for further lab analysis
  • PIDs reduce the quantity and cost of lab samples required to reach a conclusion as to the cause of the fire

 

Fire Investigation
3 April 2018

Photoionisation Detector (PID) for Arson Investigation

 

One such tool for the detection of accelerants at fire scenes recommended by investigators3 is the photoionisation detector (PID) which has already proven to be an ideal solution for the detection of relatively low level VOCs for health & safety and environmental applications. 

These devices are battery powered and portable and can be deployed rapidly and safely to test areas between floorboards and under carpets where residual traces of accelerant may remain. 

 

Fire Investigation
29 March 2018

Detecting Accelerants within Arson Investigation: The Size of the Arson Problem

According to the National Fire Protection Association, there were 19,000 intentionally set fires in the US during 2014 accounting for around 4% of all structural fires equating to more than $700m worth of damaged property. UK figures2 would suggest that more than 40% of fires in business premises and more than 20% in residential properties are intentional, whether for profit, revenge or just ‘kicks’.

But despite the fact that fire is a common, everyday phenomenon, it is a very complex chemical, physical, and thermal event.  Investigative work will focus on the ‘fire triangle’ of oxygen, fuel, and source of heat or ignition, and in cases of arson at least one of these will have been tampered with.

16 March 2018

H&S Operational Efficiency: Fugitive emissions

 


During normal operations, leaks can occur from pumps, valves, flanges, storage tanks or during loading and unloading. 

According to the US EPA3, valves and connectors account for more than 90% of emissions from leaking equipment and there are hundreds of pieces of equipment as shown in Figure 3.

15 March 2018

H&S Operational Efficiency: Plant turnaround

 

Hazardous chemicals that pose a risk to humans are normally safely transported within the process but obviously during plant turnaround this is no longer the case.  As lines and reaction vessels are opened they pose a significant risk of over-exposure, without appropriate control measures. 

Concentrations can be several hundred (or even thousand) times higher than the occupational exposure limit (OEL)!

13 March 2018

H&S Operational Efficiency: A vital component of overall business strategy

Operational Efficiency

Generally speaking, health and safety has historically been seen as a barrier to productivity, even the butt of the occasional joke. The worst scenario is people continuing to act in an unsafe manner when no one is looking thinking that in cutting corners they are getting the job done more quickly. However, there is now widespread consensus to the contrary that a strong health and safety (H&S) culture is good for business when viewed as an investment, not a cost and as a vital component of overall business strategy. Creating a sustainable business through continuous improvement leading to operational excellence (OpEx) is a major strategic objective.

 

Benzene
15 February 2018

Benzene Health Issues: Leading & Lagging Indicators

 

Leading and lagging indicators

Health surveillance by conducting a urinary test or blood count can of course show evidence of exposure but these are lagging indicators i.e. after exposure has already taken place by which time damage may have been done.

A preferable leading indicator for benzene exposure would be to monitor using a real-time monitoring instrument such as a photoionisation detector.

These can be fixed, portable or personal devices depending on the application or a combination of all three for maximum worker protection.

Benzene
15 February 2018

Benzene Health Issues: Occupational Exposure Limits

 

Occupational Exposure Limits

The table below shows the existing OELs indicated as an 8-hour time TWA and 15-minute STEL (where stated) for selected EU member states and agencies in the USA.

Recognising the specific concerns over benzene, the EU has turned to the European Chemicals agency (ECHA) to “review and evaluate the information already available and assess the most recent scientific information”. 

Benzene
15 February 2018

Benzene Health Issues: Why It Should Be Monitored

 

Hazardous chemicals that pose a risk to human health are present in many raw materials such as oil. Normally these are safely transported and contained within process pipework and reaction vessels during normal plant operation. However, routine plant repair and maintenance (planned turnaround) or a fugitive release, due to faulty anges on valves for example, can potentially expose workers above the legal occupational exposure limit (OEL).