Sunday, December 28, 2025



Hazard and Risk Basics
Hazard and Risk Basics
What are the Hazard and Risk basics? So, what is this risk analysis stuff all about? What is 'risk'? How do you define or describe it? How do you measure it? When? Why? Who...?

In this free session, I explain the basic terms and show how they link together, and how we can break them down to perform risk analysis. I understand hazards and risks because I've been analyzing them for a long time. Moreover, I've done this for aircraft, ships, submarines, sensors, command-and-control systems, and lots of software!

Everyone does it slightly differently, but my 25+ years of diverse experience lets me focus on the basics. That allows me to explain it in simple terms. I've unpacked the jargon and focused on what's important.  

This post is part of a series:

- Intro to System Safety Risk Assessment

- Start of System Safety Risk Assessment

- This post is SSRAP Module 1

- System safety risk analysis (SSRAP Module 2)

-

https://youtu.be/dd30bczHlaI
Recap: Risk Basics

Topics: Hazard and Risk Basics

- Risk & Mishap;

- Probability & Severity;

- Hazard & Causal Factor;

- Mishap (accident) sequence; and

- Hazards: Tests & Example

Transcript: Hazard and Risk Basics

Let's get started with Module One. We're going to recap some Risk basics to make sure that we have a common understanding of risk. And that's important because risk analysis is something that we do every day. Every time you cross the road, or you buy something expensive, or you decide whether you're going to travel to something, or look it up online, instead.

You're making risk analysis decisions all the time without even realizing it. But we need something a little bit more formal than the instinctive thinking of our risk that we do all the time. And to help us do that, we need a couple of definitions to get us started.

What is Risk?

First of all, what is Risk? It's a combination of two things. First, the severity of a mishap or accident. Second, the probability that the mishap will occur. So it's a combination of severity and probability. We will see that illustrated in the next slide.

We'll begin by talking about ‘mishap’. Well, what is a mishap? A mishap is an event - or a series of events -resulting in unintentional harm. This harm could be death, injury, occupational illness, damage to or loss of equipment or property, or damage to the environment.

The particular standard we're looking at today covers a range of different harms. That's why we're focused on safety. And the term 'mishap' will also include negative environmental impacts from planned events. So, even if the cause is a deliberate event, we will include that as a mishap.

Probability and Severity

I said that the definition of risk was a combination of probability and severity. Here we got a little illustration of that...

This is Module 1 of SSRAP

This is Module 1 from the System Safety Risk Assessment Program (SSRAP) Course. Risk Analysis Programs – Design a System Safety Program for any system in any application.

The full course comprises 15 lessons and 1.5 hours of video content, plus resources. It's on pre-sale at HALF PRICE until September 1st, 2024. Check out all the free preview videos here and order using the coupon “Pre-order-Half-Price-SSRAP”. But don't leave it too long because there are only 100 half-price courses available!

Meet the Author

Learn safety engineering with me, an industry professional with 25 years of experience, I have:

•Worked on aircraft, ships, submarines, ATMS, trains, and software;

•Tiny programs to some of the biggest (Eurofighter, Future Submarine);

•In the UK and Australia, on US and European programs;

•Taught safety to hundreds of people in the classroom, and thousands online;

•Presented on safety topics at several international conferences.
#howtoriskassessment #howtoriskassessmentanalysis #learnriskassessment #learnriskassessmentanalysis #riskassess #riskassessment #riskassessmentanalysistechnique #riskassessmentanalysistraining #riskassessmentanalysistutorial #riskassessmenteducation #riskassessmentequation #riskassessmentguide #riskassessmentkeypoints #riskassessmentoutline #riskassessmentquestionstoask #riskassessmentskills #riskassessmenttechnique #riskassessmenttraining #riskassessmenttutorial #riskassessmentvideo #riskmanagement31000pdf
Simon Di Nucci https://www.safetyartisan.com/2024/07/31/ssrap-module-1-risk-basics/

Saturday, December 27, 2025



Guide to the WHS Act
Guide to the WHS Act
This Guide to the WHS Act covers many topics of interest to system safety and design safety specialists. The full-length video explains the Federal Australian Work Health and Safety (WHS) Act (latest version, as of 14 Nov 2020). Brought to you by The Safety Artisan: professional, pragmatic, and impartial.

https://youtu.be/Yzkl3vCVYv8
This is the four-minute demo of the full, 44-minute-long video.

see the full-length video here

Recap: In the Short Video...

... which is here, we looked at:

- The Primary Duty of Care; and

- Duties of Designers.

Topics: Guide to the WHS Act

In this full-length video, we will look at much more…

- § 3, Object ;

- § 4-8, Definitions;

- § 12A, Exclusions;

- § 18, Reasonably Practicable;

- § 19, Primary Duty of Care;

- § 22-26, Duties of Designers, Manufacturers, Importers, Suppliers & those who Install/Construct/Commission;

- § 27, Officers & Due Diligence;

- § 46-49, Consult, Cooperate & Coordinate;

- § 152, Function of the Regulator; and

- § 274-276, WHS Regulations and CoP.

Transcript: Guide to the WHS Act

Click here for the Transcript
Hi everyone and welcome to the Safety Artisan. Where you will find instructional videos like this one with professional, pragmatic and impartial advice which we hope you enjoy. I’m Simon and I’m recording this on the 13th of October 2019. Today we’re going to be talking about the Australian Federal Work Health and Safety Act. I call it an unofficial guide or system or design safety practitioners (whatever you want to call yourselves). I’m looking at the WHS Act from the point of view of system safety and design safety.

 As opposed to managing the workplace although it does that as well. I recorded a short video version of this. In that, we looked at the primary duty of care and the duty of designers. We spent some time looking at that and that video is available. It’s available at safetyartisan.com and you can watch it on YouTube. So just search for safety artisan on YouTube.

Topics

So, in this video, we’re going to look at much more than that. I say selected topics we’re not going to look at everything in the WHS Act. As you can see there are several hundred sections of it. We’ll be here all day. So, what we’re going to look at are things that are relevant to systems safety to design safety. So, we look very briefly at the object of the act, at what it’s trying to achieve. Just one slight of definitions because there’s a lot of exclusions because the Act doesn’t apply to everything in Australia.

 We’re going to look at the Big Three involved. So really the three principles that will help us understand what the act is trying to achieve is:

- what is reasonably practicable. That phrase that I’ve used several times before.

- What is the primary duty of care so that sections 18 and 19. And if we jump to

- Section 27 What are or who are officers and what does due diligence mean in a WHS setting?

So, if I step back to Sections 22 to 26 you know the duties of various people in the supply chain.  We cover that in the short session. So, go ahead and look at that and then moving on. There are requirements for duty holders to consult cooperate and coordinate. Then there's a brief mention of the function of the regulator. And finally, the WHS Act enables WHS regulations and codes of practice. So we’re just mentioned that so those are the topics we’re going to cover quite a lot to get through. So that’s critical.

Disclaimer

So, first, this is a disclaimer from the website from the federal legislation site. It does remind people looking at the site that the information put up there is for the benefit of the public and it’s free of charge.

 So, when you’re looking at this stuff you need to look at the relevance of the material for your purposes. OK, I’m looking at the Web site. It is not a substitute for getting legal or appropriate professional advice relevant to your particular circumstances. So quick disclaimer there. This is just a way a website with general advice. Hence, this video is only as good as the content that’s being presented okay?

The Object of the Act

So, the object of the act, then. I’m quoting from it because I’m using quotation marks, so the main object of the act is to provide a balanced and nationally consistent framework for the health and safety of workers and workplaces.

 And that’s important in Australia because Australia is a federated state. So, we’ve got states and territories and we’ve got the federal government or the Commonwealth as it’s usually known. The laws all those different bodies do not always line up. In fact, sometimes it seems like the state and territories delight in doing things that are different from the Commonwealth. And that’s not particularly helpful if you’re trying to operate in Australia as a corporation. Or if you’re trying to do something big and trying to invest in the country.

 So, the WHS act of a model WHS Act was introduced to try and harmonize all this stuff. And you’ll see some more about that on the website. By the way and I’ve missed out on some objectives. As you can see, I’m not doing one subset B to H go to have a look at it online. But then in Section 2 The reminder is the principle of giving the highest level of protection against harm to workers and other persons as is reasonably practicable. Wonderful phrase again which will come back to okay.

Definitions

 Now there are lots of definitions in the act. And it’s worth having a look at them particularly if you look at the session that I did on system safety concepts. There I was using definitions from the UK standard. Now I did that for a reason because that set of definitions was very well put together. So it was ideal for explaining those fundamental concepts where the concepts in Australia WHS are very different. If you are operating in Australian jurisdiction or you want to sell into an Australian jurisdiction do look at those definitions. Being aware of what the definitions are will actually save you a lot of hassle in the long run.

 Now because we’re interested systems safety practitioners of introducing complex systems into service. I’ve got the definitions here of plant structure and substance. So basically, plant is any machinery equipment appliance container implement or to any component of those things and anything fitted or connected to any of those things. So, they go going for pretty a pretty broad definition. But bearing in mind we’re talking about plants we’re not talking about consumer goods. We’re not talking about selling toasters or electric toothbrushes to people. OK. There’s other legislation that covers consumer goods.

 Then when it comes to structure again, we’ve got anything that is constructed be fixed or movable temporary or permanent. And it might include things on the ground towers and masks underground pipelines infrastructure tunnels and mining any components or parts thereof. Again, a very broad definition and similarly substance any natural or artificial substance in whatever form it might be. So again, very broad and as you might recall from the previous session a lot of the rules for designers’ manufacturers, importers and suppliers cover plant structure and substances. So hence that’s why I picked just those three definitions out of the dozens there.

Exclusions

 It’s worth mentioning briefly exclusions: what the Act does not apply to. So, first, the Act does not apply to commercial ships basically. So, in Australia, the Federal legislation covering the safety of people in the commercial maritime industry is the Occupational Health and Safety Act (Maritime Industry) 1993, which is usually known as “OSHMI” applies to commercial vessels, so WHS does not. And the second exclusion is if you are operating an offshore petroleum or greenhouse gas storage platform and I think it’s more than three nautical miles offshore.

 But don’t take my word for that if you’re in that business go and check with the regulator NOPSEMA then this act the Offshore Petroleum and Greenhouse Gas Storage Act 2006 applies or OPGGS for short. So, if you’re in the offshore oil industry then you’ve got a separate Commonwealth act plot but those are the only two exceptions. So, where Commonwealth law applies the only things that WHS. does not apply to is commercial ships and offshore platforms I mentioned state and territory vs. Commonwealth. All the states and territories have adopted the model WHS system except Victoria which so far seems to be showing no interest in adopting WHS.

 Thanks, Victoria, for that. That’s very helpful! Western Australia is currently in process of consultation to adopt WHS, but they’ve still got their current OH&S legislation. So just note that there are some exclusions there. OK so if you’re in those jurisdictions then WHS does not apply. And of course, there are many other pieces of legislation and regulation that cover particular kinds of risk in Australia. For example, there’s a separate act called ARPANS that covers ionizing a non-ionizing radiation.

There are many other acts that cover safety and environmental things. Let’s go back one when I’m talking about those specific acts. They only apply to specific things whereas WHS act is a general Act applies to everything except those things that it doesn’t like to write move on.

So Far As is Reasonably Practicable

Okay now here we come to one of these three big ticket items and I’ve got two slides here. So, in this definition of reasonably practicable when it comes to ensuring health and safety reasonably practicable means doing what you are reasonably able to do to achieve the high standards of health safety in place.

 Considering and weighing up all the relevant matters; including, say, the first two we need to think about the likelihood of a hazard or risk. How likely is this thing to occur as a potential threat to human health? And what’s the degree of harm that might result from the hazard or risk? We’ve got a likelihood and degree of harm or severity. If we recall the fundamental definition of risk is that it’s though it’s the factor of those two things taken together. So, in this first part, we’re thinking about what is the risk.

 And it’s worth mentioning that hazard is not defined in the Act and risk is very loosely defined. So, the act is being deliberately very broad here. We’re not taking a position on or style of approach to describing risks, so to the second part.

Having thought about the risk now we should consider what the person PCBU or officer, whoever it might be, ought reasonably to know about the hazard or risk and the ways of eliminating or minimizing the risks. So, what we should know about the risk and the ways of dealing with it of mitigating it of controlling and then we’ve got some more detail on these ways of controlling the risk.

 We need to think about the availability and suitability of ways to eliminate or minimize the risk. Now I’m probably going to do a separate session on reasonably practicable because there is a whole guidebook on how to do it. So, we’ll go through that and at some stage in the future and go through that step by step about how you determine availability and suitability et cetera. And so, once you get into it it’s not too difficult. You just need to follow the guidelines which are very clear and very well laid out.

 So having done all of those things, after assessing the extent of the risk and the available ways of controlling it the we can then think about the cost associated with those risk controls and whether the cost of those controls is grossly disproportionate to the risk. As we will see later, in the special session, if the cost is grossly disproportionate to the risk reduction then it’s probably not reasonable to do it. So, you don’t necessarily have to do it but we will step back and just look at the whole thing.

So, in a and b we’re looking at the likelihood and severity of the risk so and we’re (quantifying or qualitatively) assessing the risk. We’re thinking about what we could do about it, how available and suitable are those risk controls, and then putting it all together. How much will it cost to implement those risk controls and how reasonably practicable to do so. So what we have here is basically a risk assessment process that leads us to a decision about which controls we need to implement in order to achieve that ‘reasonably practicable’ statement that you see in so many parts of the act and indeed it’s also in the definition itself.

 So, this is how we determine what is reasonably practicable. We follow a risk assessment process. There is a risk assessment Code of Practice, which I will do a separate session on. It gives you a basic minimum risk assessment process to follow that will enable us to decide what is reasonably practicable. Okay, quite a big topic there. And as I say we’ll come back and do a couple more sessions on how to determine reasonably practical. Let's move on to the primary duty of care we covered in the short session.

The Primary Duty of Care

 So I’m not really going to go through this again but basically our primary duty is to ensure so far as is reasonably practicable the health and safety of workers, whether we’ve engaged them whether we’ve got somebody else to engage them or whether we are influencing or directing people carrying out the work. We have a primary duty of care if we’re doing any of those things. And secondly, it’s worth mentioning that the person conducting a business or undertaking the PCBU must ensure the health and safety of other people. Say, visitors to the workplace are members of the public who happen to be near the workplace.

 And of course, bearing in mind that this law applies to things like trains and aircraft if you have an accident with your moving vehicle or your plant you could put people in danger – in the case of aeroplanes anywhere in Australia and beyond. So, it’s not just about the work, the workers in the workplace. With some systems, you’ve got a very onerous responsibility to protect the public depending on what you’re doing. Now for a little bit more detail that we didn’t have in the short session. When we say we must ensure health and safety we’re talking about the provision and maintenance of a safe work environment or safe plant structures or safe systems of work talking about safe use handling and storage of structures and substances.

 We’re talking about adequate facilities for workers that are talking about the provision of information, training, instruction or supervision. Those workers and finally the health of workers and conditions of the workplace are monitored if need be for the purpose of preventing illness or injury. So, there should be some general monitoring of health and safety-related incidents. And if you’re dealing with certain chemicals or are you intentionally exposing people to certain things you may have to conduct special monitoring looking for contamination or poisoning of those people whatever it may be. So, you’ve got quite a bit of detail there about what it means to carry out the primary duty of care.

 And this is all consistent with the duties that we’ve talked about on designers, manufacturers, importers, and suppliers and for all these things there are codes of practice giving guidance on how to do these things. So, this whole work health and safety system is well thought through, put together, in that the law says you’ve got to do this. And there are regulations and codes of practice giving you more information on how you can fulfil your primary directive and indeed how you must fulfill your primary duty.

 And then finally there’s a slightly unusual part for at the end and this covers the special case where workers need to occupy accommodation under the control of the PCBU in order to get the job done. So you could imagine if you need workers to live somewhere remote and you provided accommodation then there are requirements for the employer to take care of those workers and maintain those premises so that they not exposed to risks.

 That’s a big deal because she might have a remote plant, especially in Australia which is a big place and not very well populated. You might be a long way away from external help. So if you have an emergency on-site you’re going to have to provide everything (not just an emergency you need to do that anyway) but if you’ve got workers living remotely as often happens in Australia you’ve got to look after those workers in a potentially very harsh environment.

And then finally it’s worth mentioning that self-employed persons have got to take care of their own health and safety. Note that a self-employed person is a PCBU, so even self-employed people have a duty of care as a PCBU.

The Three Duties

OK, sections 22 to 26. Take that primary duty of care and elaborate it for designers and manufacturers, importers and suppliers and for those installing constructing or commissioning plant substances and structures. And as we said in the free session all of those roles all of the people BCBS is doing that have three duties they have to ensure safety in a workplace and that includes you know designing and manufacturing the thing and ensuring that it’s safe and meets Australian regulations and obligations.

 We have a duty to test which actually includes doing all the calculations analysis and examination that’s needed to demonstrate safety and then to provide needed information to everybody who might use or come into contact with the system so those three duties apply consistently across the whole supply chain. Now we spent some time talking about that. We’re going to move on OK, so we are halfway through. So, a lot to take in. I hope you’re finding this useful and enjoying this. Let’s move on. Now this is an interesting one.

Officers of the PCBU

Officers of the PCBU have additional duties and an officer of the PCBU might be a company director. That’s explicitly included in the definition. A senior manager somebody who has influence. Offices of the PCBU must exercise due diligence. So basically, the implied relationship is you’ve got a PCBU, you’ve got somebody directing work whether it be design work manufacturing operating a piece of kit whatever it might be. And then there are more senior people who are in turn directing those PCBUs (the officers) so the officers must exercise due diligence to ensure that the PCBUs comply with their duties and obligations.

Sections 2 to 4 cover penalties for offices if they fail. I’m not going to discuss that because as I’ve said elsewhere on the Safety Artisan website, I don’t like threatening people with penalties because I actually think that results in poor behavior, it actually results in people shirking and avoiding their duties rather than embracing them and getting on with it. If you frighten people or tell them what’s going to happen to them, they get it wrong. So, I’m not going to go there. If you’re interested you can look up the penalties for various people, which are clearly laid out. We move on to Section 5.

Due Diligence

 We’re now talking about what is due diligence in the context of health and safety. OK, I need to be precise because the term due diligence appears in other Australian law in various places meaning various things, but here this is the definition of due diligence within the WHS context. So, we’ve got six things to do in order to demonstrate due diligence.

So, officers must acquire and keep up to date with knowledge of work health and safety matters obligations and so forth. Secondly, officers must gain an understanding of the nature of the operations of the piece and risks they control.  So, if you’re a company director you need to know something about what the operation does. You cannot hide behind “I didn’t know” because it’s a legal requirement for you to do it. So that closes off a whole bunch of defenses in court.
#arehealthandsafetypolicieslegallyenforceable #AustralianWHS #Guidance #Guide #healthandsafetyandriskassessment #healthandsafetyandworkact #healthandsafetyhazardsintheworkplace #healthandsafetykeypoints #healthandsafetylegislationisdesignedtoprotect #healthandsafetyvocabularypdf #healthorsafetyissues #howhealthandsafetylawaffectbusiness #howhealthandsafetyrulesaffectyou #riskassessment #riskmanagement #safetytraining #whatarehealthandsafetyguidelines #whathealthandsafetylegislation #WHS #workhealthsafety2011
Simon Di Nucci https://www.safetyartisan.com/2023/04/26/guide-to-whs/


Intro to Work Health and Safety
Intro to Work Health and Safety
This Intro to Work Health and Safety (WHS) video looks at Australian legislation that is relevant to System Safety.

When I moved from the UK to Australia in 2012, I had to learn a new legal framework as a safety engineer. I was delighted to find that Australia had taken the principles of UK health and safety law, and crafted a simple, elegant, and readable set of legislation.

In Australia, WHS law applies not just to the workplace, but to designers, manufacturers, importers, and suppliers of plant, substances, and structures. In other words, it covers design and product safety as well.

This short video, and the full-length version, should be helpful to system, functional, and design safety practitioners.  It looks at the three classes of 'upstream' safety duties of designers, that also apply to manufacturers, importers, suppliers those who install/commission plant substances and structures. 

Intro to Work Health and Safety: so What?

Many people think the WHS Act only applies to the management of safety in the workplace. They’re wrong – it does much more than that. In this short presentation, I am going to show you why the WHS Act is relevant to those with 'upstream' safety responsibilities such as designers.

Intro to Work Health and Safety: Topics

- The primary duty of care;

- Safety duties of designers (Section 21); and

- Similar duties apply to others, such as:

- Manufacturers (Section 23);

- Importers (Section 24);

- Suppliers (Section 25);

- Those installing, constructing or commissioning (Section 26);

- Officers (Section 27); and

- Workers (Section 28).

Intro to Work Health and Safety: Transcript

Click Here for the Transcript
Hi everyone and welcome to the Safety Artisan where you will find Professional, pragmatic And impartial Instruction on safety. Which we hope you enjoy. So today we’re talking about the Work Health and Safety (WHS) Act in Australia. Which is surprisingly relevant to what we do in Fact. Let’s see how surprising and relevant it is.Were going to look at the WHS Act. And its relevance to what we’re talking about here on the Safety Artisan. And it’s important to answer that question first, The “So what” test. Many people think that the WHS Act is only applicable To safety In the workplace. So they see it as purely an occupational health and safety Piece of legislation.

And it isn’t!

It does do that, but it does so much more as well.And in this short presentation, I’m going to show you why The WHS act is relevant. To system safety, functional safety, design safety, Whatever we want to call it.

Now I’m actually looking up some information On the work Health and Safety Act, from The Federal Register of Legislation. And, (In blue letters.) And if we go down to the bottom left-hand side of the screen. We will seeA little map of Australia with a big red tick on it. And in green, it says ‘in force latest version’. So I looked at the Website Today, the 6th of October. And this is the latest version. Which is just to make sure that We’ve got the right version. In Australia the Jurisdiction of which version of the act is in place Is complex. I’m not going to talk about that in the short session but I will in the full video version.

The Primary Duty of Care under the WHS Act

The Primary Duty of Care under the WHS Act is as follows. So a person Conducting a business or undertaking and – a Person Conducting a Business or Undertaking is usually abbreviated to PCBU. A horrible, horrible, clunky term! What it’s trying to say is whether you’re doing business or it is non-profit. Whether you work for the government. Or even if you’re self-employed. Whoever you are and whatever you do. If it’s to do with work, being paid for work. Then this applies to you.

Those people doing this stuff Are responsible For ensuring the health andsafety Of workers, who are engaged or paid by the person, by the PCBU. Workers whose activities are influenced or directed by the PCBU while they’re at work. And also the PCBU must ensure the health and safety of Other people. So in the vicinity of the workplace let’s say, or Maybe visitors.

As always the caveat on this ‘ensuring’ Health and Safety is ‘So Far As is reasonably Practicable’. Again we’re not going to be talking about So far as is reasonably practicable in this session, we’ll talk about it in the longer session; and, in fact, I think I’m probably going to do a session Just on the how to do So far as is Reasonably Practicable Because A lot of people Get it wrong. It’s quite a different concept. If you’re not used to it.

Designer Duties under the WHS Act

Moving on. We’ve jumped from Section 19 to Section 22. And we’re now talking about the duties of designers. Well, this doesn’t sound like occupational health and safety does it? So we look at the designer duties of PCBUs who design Plant, Substances, Or structures. So we’re talking industrial plant we’re not talking about commercial goods. There are otherActs that apply to stuff that you would buy in a shop. So this is industrial plant, Chemical substances and the like. And structures and those might be buildings. Or they might be ships, floating platforms, whatever they might be. Aircraft. Cars.

The First WHS Duty of a Designer

So here we have The First Duty of a designer. And there are three groups of duties. First of all, The designer Has to ensure The health and safety of People in the workplace. If they’re designing plant. If they’re designing or creating. A substance, or A structure. That is to be used, Or might reasonably be expected to be used At a workplace. This duty applies to them. So they’ve got to do whatever it takes. To ensure Health and Safety So far as is reasonably practicable.

Now, carrying on from that. We get a bit more detail. So the designer has got to ensure, so far as is reasonably practicable, that plant, substance or structure Is designed To be without risks. The risks are To the health and safety of persons, who Are At a workplace. Who might, Use it For the purpose for which it was designed, Who might Handle the substance. Who might store the plant or substance? And who might construct a structure? Or, and here’s the catch-all, who might carry out any reasonably foreseeable activity At a workplace In relation to this plant, substance, or structure.

And then if we go on to Part (e)(i) And we now get a long list of stuff. Any reasonably foreseeable activity Includes manufacture, assembly, Use, Proper storage, decommissioning, dismantling, disposal, Etc. We run out of space there. But the bottom line is that the scope of this act is cradle to grave. So from the very first time that we Design A plant, substance or structure. Right through to final disposal of said, Plant Substance and structure. The Designer has safety responsibilities. Thinking about the whole lifecycle of This stuff.

The Second WHS Duty of a Designer

Now we move on to the other Two duties that a designer has. So in subsection 3. The designer has a duty to carry out testing. That’s what it says in the guide. Actually, if you look at the words in the act it says the designer must carry out or arrange for Calculations, analysis, testing, Or examination. Whatever is necessary for the performance of the duty that We just described In Subsection 2. You recall Subsection 2, cradle to grave, from creation to final disposal. Calculations, analysis, testing or examination Might be needed. The designer has got to Carry that out Or arrange it. In order to ensure safety SFARP.

The Third WHS Duty of a Designer

And then, our Final Duty Is having done all of that work. Having designed this stuff to be safe and done all the Calculations and testing. The designer must give Adequate information to each person provided with the design. And the purpose of doing so, We’re not just providing information for the sake of it, or because we felt like it. It’s provided for a specific purpose. So each Purpose, Which the plant, substance or structure was designed. So we need all the information associated With its design purpose.We’ve got to provide the results of those calculations, analysis, testing andexamination.

And, Probably this is also equally Crucial from a hazard analysis point of view, Any conditions necessary to ensure that the plant, substance or structure Is without risk to health and safety. When it is used for the purpose for which it was designed, Or, (All the other stuff If we go back toSection 2.)

So Section 4, Does actually say this applies to Section 2(a-e). But we ran out of space on the page, so the designers got to provide all the information necessary. for people to use this stuff and for the life cycle of whatever it is from cradle to grave. Now, If we look at Section 4(a-c), We can say that’s the kind of information we generate from Hazard Analysis from safety analysis. So, yeah, Absolutely We need system safety In order to meet these duties, to satisfy these duties.

A Consistent set of Duties Across the Supply Chain

And these duties are not just on designers, because the WHS Act Is actually Very, very clever. Because it applies Much the same duties, those three duties that we heard of. The duty to ensure health and safety. The duty to test and analyze. And the duty to provide information. If we look at Sections 22, Through 26, We find that very similar duties applyTo designers.To manufacturers.To importers.To suppliers.And to those installing, constructing, Or commissioning. Substances andStructures.And the duties in these sections are all consistent. Basically, it recognizes that there is a supply chain. From design right through to installation and commissioning. And Everybody in that chain Has duties To do their part correctly, or to test what they have to. Pass on information, To the next set of stakeholders.

And then, In addition to that, If we looked in Section 27 we would see the Officers Of the PCBU, so Company directors and the like, People with, major influence, Who are able to direct operations and that kind of thing. So senior management and directors of companies and the equivalent in the public sector Have special requirements applying to them. Again, We’re going to talk about that in the Main Video, Not in this one. And then workers have Duties to Comply with reasonable instructions, That are intended to keep safe And other workers . So that if we go to Section 28 you get the kind of thing that you would expect to see in work-place safety.

Copyright and Attribution

So that’s it In the short video. Just to mention that I have Shown you information From the Federal Register of Legislation. I’m entitled to do that under the Creative Commons license. And I’m making the required attribution statement. You can see it in the middle of the Screen. And for the full information on these terms on copyright and attribution, Please go to that page On my website. And you will find full details of the terms and conditions, under which this video was created. And if you want to see the full version of the introduction to the WHS Act, which is going to cover a lot more ground than this then please go to the Safety Artisan page On www.Patreon.com.

That’s the Presentation. And it just remains for me to say, Thanks very much for listening. I look forward to meeting you again. Cheers now.

The Full Version is Here…

If you want more, if you want a wider and deeper view of the WHS Act, then there’s a longer version of this video. Which you can get at my Patreon page.

I hope you enjoy it. Well that’s it for the short video, for now. Please go and have a look at the longer video to get the full picture. OK, everyone, it’s been a pleasure talking to you and I hope you found that useful. I’ll see you again soon. Goodbye.

The full-length ‘Guide to WHS’ post and video is here.
#atworkhealthandsafety #guidetowhsact #howdoeswhswork #howtoworkinhealthandsafety #projectworkhealthandsafetyrequirements #whatarewhsstandards #whatisthemeaningofworkhealthandsafety #whatiswhsandwhyisitimportant #whatmustemployeesdoforhealthandsafety #whatwhsmeans #whatwhsstandfor #WHS #whs2011regulations #whsdutyofcare #whshazardsandrisks #whyarewhspoliciesimportant #WorkHealthandSafety #workhealthandsafety2012 #workhealthandsafetybill #workhealthandsafetybill2011 #workhealthandsafetyemployerresponsibilities #workhealthandsafetyguidelines #workhealthandsafetyobjectives #workhealthandsafetypurpose #workhealthandsafetyquestions #workhealthandsafetystrategy
Simon Di Nucci https://www.safetyartisan.com/2023/02/01/introduction-to-australian-work-health-safety/


The 2024 Blog Digest - Q3/Q4
The 2024 Blog Digest - Q3/Q4
The 2024 Blog Digest - Q3/Q4 brings you all of The Safety Artisan's blog posts from the first six months of this year. I hope that you find this a useful resource!

The 2024 Blog Digest - Q3/Q4: 18 Posts!

Meet the Author

Learn safety engineering with me, an industry professional with 25 years of experience. I have:

•Worked on aircraft, ships, submarines, ATMS, trains, and software;

•Tiny programs to some of the biggest (Eurofighter, Future Submarine);

•In the UK and Australia, on US and European programs;

•Taught safety to hundreds of people in the classroom, and thousands online;

•Presented on safety topics at several international conferences.

Hi, everyone, and welcome to The Safety Artisan. I’m Simon, and I just wanted to share with you briefly why I started this enterprise. I’ve had a career in safety, engineering, and safety consulting for over 25 years now. And in that time, I’ve seen customers make one of two mistakes quite often. First of all, I’ve seen customers not do some things that they should have been doing. This was usually because they were just ignorant of what their legal obligations were.

And I guess that’s a fairly obvious mistake. That’s what you would expect me to say. But more often, I’ve seen customers do too much to try and achieve safety, which is surprising! I’ve seen people waste a lot of time, energy, and money doing things that just didn’t make a difference. Sometimes it actually got in the way of doing good safety work.

And I think the reasons for those mistakes are, first of all, ignorance.

Secondly, not knowing precisely what safety is and therefore not being able to work out how to get there. That’s why I started The Safety Artisan. I wanted to equip people with the knowledge of what safety really is and the tools to get there efficiently. To neither do too much nor too little. We want Safety, Just Right.
#coursesafetyengineering #ineedsafety #knowledgeofsafety #learnsafety #safetyblog #safetydo #safetyengineer #safetyengineertraining #safetyengineeringcourse #safetyprinciples
Simon Di Nucci https://www.safetyartisan.com/2024/12/26/the-2024-blog-digest-q3-q4/


Introduction to System Safety Risk Assessment
Introduction to System Safety Risk Assessment
In this 'Introduction to System Safety Risk Assessment', we will pull together several key ideas.

First, we'll talk about System Safety. This is safety engineering done in a Systems Engineering Framework. We are doing safety within a rigorous process.

Second, we're talking about Risk Assessment. This is a term for putting together different activities within another process. This process may be basic, or it might be quite sophisticated, as illustrated, below.

The Risk Assessment Process

Third, and finally, we will put all this together into a System Safety Program. This is hinted at in the diagram, above, but a real system safety program needs to do a lot more than this. It needs to tie into the project it supports, to systems engineering, to resources, quality, V&V, etc. Designing such a program is complex, so we typically follow a standard, like Mil-Std-882E.

You can hear more about this in the introductory video, below.

https://youtu.be/80irBJjmzxI
Introduction Video

This post is part of a series:

- This Post is the Intro to the System Safety Risk Assessment Programs Course.

- Start of System Safety Risk Assessment

- Hazard & Risk Basics (SSRAP Module 1)

- System safety risk analysis (SSRAP Module 2)

Transcript:

Introduction

Hello,

Welcome to this course on Systems Safety Risk Analysis Programs. I'm Simon Di Nucci, The Safety Artisan, and I've been a safety engineer and consultant for over 20 years. I've worked on a wide range of safety programs doing risk analysis on all kinds of things. Ships, planes, trains, air traffic management systems, software systems, you name it.

I've worked in the U.K., in Australia, and on many systems from the U.S. I've also spent hundreds of hours training hundreds of people on safety. And now I've got the opportunity to share some of that knowledge with you online.

So, what are the benefits of this course?

First of all, you will learn about basic concepts. About system safety, what it is and what it does. You will know how to apply a risk analysis program to a very complex system and how to manage that complexity. So, that's what you'll know.

At the end of the course, you will also be able to do things that you might not have been able to do before. You will be able to take the elements of a risk analysis program and the different tasks. You can select the right tasks and form a program to suit your application, whatever it might be. Whether you might:

- Have a full, high-risk bespoke development system,

- Be taking a commercial system off the shelf and doing something new with it, or

- Take a product and use it in a new application or a new location.

Whatever it might be, you will learn how to tailor your risk analysis program. This program will give you the analyses you need. And to meet your legal and regulatory requirements. Once you've learned how to do this, you can apply it to almost any system.

Finally, you will feel confident doing this. I will be interpreting the terminology used in the tasks and applying my experience. So, instead of reading the standard and being unsure of your interpretation, you can be sure of what you need to do. Also, I will show you how you can get good results and avoid some of the pitfalls.

These are the three benefits of the Course

- You will know what to do.

- You will be able to perform risk program tasks, and

- You'll feel confident doing those tasks.

At the end of the course, I will also show you where to find further resources. There are free resources to choose from. But there are also paid resources for those who want to take your studies to the next level. I hope you enjoy the course.

This is Module 1 of SSRAP

This is Module 1 from the System Safety Risk Assessment Program (SSRAP) Course. Risk Analysis Programs – Design a System Safety Program for any system in any application.

The full course comprises 15 lessons and 1.5 hours of video content, plus resources. It's on pre-sale at HALF PRICE until September 1st, 2024. Check out all the free preview videos here and order using the coupon “Pre-order-Half-Price-SSRAP”. But don't leave it too long because there are only 100 half-price courses available!

Meet the Author

Learn safety engineering with me, an industry professional with 25 years of experience, I have:

•Worked on aircraft, ships, submarines, ATMS, trains, and software;

•Tiny programs to some of the biggest (Eurofighter, Future Submarine);

•In the UK and Australia, on US and European programs;

•Taught safety to hundreds of people in the classroom, and thousands online;

•Presented on safety topics at several international conferences.
#AdvancedSafetyRiskAnalysis #ComprehensiveSafetyEngineeringCourse #DesigningaRiskAnalysisProgram #ExpertSafetyManagementTraining #HazardAnalysisTasks #LearnSystemSafetyRiskAnalysis #OnlineTraininginSystemSafety #ProfessionalSafetyRiskAnalysisCourse #RiskAnalysisProgramDesign #RiskAnalysisProgramforComplexSystems #RiskAnalysisTraining #SafetyEngineeringCourses #SafetyManagementTraining #SafetyProgramStandardTraining #SafetyRiskAnalysisforBeginners #SafetyRiskAnalysisPrograms #SystemSafetyRiskAnalysis #SystemSafetyTrainingOnline #TailorYourRiskAnalysisProgram #UnderstandingSystemSafetyStandards
Simon Di Nucci https://www.safetyartisan.com/2024/07/10/introduction-to-system-safety-risk-assessment/


System Hazard Analysis with Mil-Std-882E
System Hazard Analysis with Mil-Std-882E
In this 45-minute session, I look at System Hazard Analysis with Mil-Std-882E. SHA is Task 205 in the Standard. I explore Task 205's aim, description, scope, and contracting requirements.

I also provide commentary, based on working with this Standard since 1996, which explains SHA. How to use it to complement Sub-System Hazard Analysis (SSHA, Task 204). How to get the maximum benefits from your System Safety Program.

Using Task 205 effectively is not just a matter of applying it in number order with the other Tasks. We need to use it within the Systems Engineering framework. That means using it top-down, to set requirements, and bottom-up to verify that they are met.

https://youtu.be/F70fhSGsyLk
This is the seven-minute-long demo. The full video is 47 minutes long.

get the course 'system hazard analysis': click here

System Hazard Analysis: Topics

- Task 205 Purpose ;

- Verify subsystem compliance;

- ID hazards (subsystem interfaces and faults);

- ID hazards (integrated system design); and

- Recommend necessary actions.

- Task Description (five slides);

- Reporting;

- Contracting; and

- Commentary.

Transcript: System Hazard Analysis with Mil-Std-882E

Introduction

Hello, everyone, and welcome to the Safety Artisan, where you will find professional, pragmatic, and impartial safety training resources and videos. I’m Simon, your host, and I’m recording this on the 13th of April 2020. And given the circumstances when I record this, I hope this finds you all well.

System Hazard Analysis Task 205

Let's get on to our topic for today, which is System Hazard Analysis. Now, system hazard analysis is, as you may know, Task 205 in the Mil-Std-882E system safety standard.

Topics for this Session

What we're going to cover in this session is purpose, task description, reporting, contracting, and some commentary – although I'll be making commentary all the way through. Going back to the top, the yellow highlighting with this (and with Task 204), I'm using the yellow highlighting to indicate differences between 205 and 204 because they are superficially quite similar. And then I'm using underlining to emphasize those things that I want to bring to your attention and emphasize.

Within Task 205, Purpose. We've got four purpose slides for this one. Verify subsistent compliance and recommend necessary actions – fourth one there. And then in the middle of the sandwich, we've got the identification of hazards, both between the subsystem interfaces and faults from the subsystem propagating upwards to the overall system and identifying hazards in the integrated system design. So, quite a different emphasis to 204, which was thinking about subsystems in isolation. We’ve got five slides of task description, a couple on reporting, one on contracting – nothing new there – and several commentaries.

System Requirements Hazard Analysis (T205)

Let's get straight on with it. The purpose, as we've already said, there is a three-fold purpose here; Verify system compliance, hazard identification, and recommended actions, and then, as we can see in the yellow, the identifying previously unidentified hazards is split into two. Looking at subsystem interfaces and faults and the integration of the overall system design. And you can see the yellow bit, that's different from 204 where we are taking this much higher-level view, taking an inter-subsystem view and then an integrated view.

Task Description (T205) #1

On to the task description. The contract has got to do it and document, as usual, looking at hazards and mitigations, or controls, in the integrated system design, including software and human interface. We must come onto that later.

All the usual stuff about we've got to include COTS, GOTS, GFE, and NDI. So, even if stuff is not being developed, if we're putting together a jigsaw system from existing pieces, we've still got to look at the overall thing. And as with 204, we go down to the underlined text at the bottom of the slide, areas to consider. Think about performance, and degradation of performance, functional failures, timing and design errors, defects, inadvertent functioning – that classic functional failure analysis that we've seen before.

Again, while conducting this analysis, we’ve got to include human beings as an integral component of the system, receiving inputs, and initiating outputs.  Human factors were included in this standard from long ago...

The End

You can see all the Mil-Std-882E Analysis Tasks here.

Get a free pdf of the System Safety Engineering Standard, Mil-Std-882E, here.

Learn safety engineering with me, an industry professional with 25 years of experience, I have:

•Worked on aircraft, ships, submarines, ATMS, trains, and software;

•Tiny programs to some of the biggest (Eurofighter, Future Submarine);

•In the UK and Australia, on US and European programs;

•Taught safety to hundreds of people in the classroom, and thousands online;

•Presented on safety topics at several international conferences.
#Milstd882Technique #Milstd882Training #Milstd882tutorial #Milstd882Video #MilStd882E #Milstd882eTechnique #Milstd882eTraining #Milstd882etutorial #Milstd882eVideo #SafetystandardTechnique #SafetystandardTraining #Safetystandardtutorial #SafetystandardVideo #SHA #systemhazardanalysis #systemhazardanalysisTechnique #systemhazardanalysisTraining #systemhazardanalysistutorial #systemhazardanalysisVideo #SystemsafetyengineeringTechnique #systemsafetyengineeringtraining #Systemsafetyengineeringtutorial #SystemsafetyengineeringVideo #Task205
Simon Di Nucci https://www.safetyartisan.com/2025/06/30/equipped-system-hazard-analysis/


Functional Hazard Analysis with Mil-Std-882E
Functional Hazard Analysis with Mil-Std-882E
In this video, I look at Functional Hazard Analysis with Mil-Std-882E (FHA, which is Task 208 in Mil-Std-882E). FHA analyses software, complex electronic hardware, and human interactions. I explore the aim, description, and contracting requirements of this Task, and provide extensive commentary on it. (I refer to other lessons for special techniques for software safety and Human Factors.)

This video, and the related webinar 'Identify & Analyze Functional Hazards', deal with an important topic. Programmable electronics and software now run so much of our modern world. They control many safety-related products and services. If they go wrong, they can hurt people.

I've been working with software-intensive systems since 1994. Functional hazards are often misunderstood or overlooked, as they are hidden. However, the accidents that they can cause are very real. If you want to expand your analysis skills beyond just physical hazards, I will show you how.

https://youtu.be/f4jDnnqYhus
This is the seven-minute demo; the full version is 40 minutes long.

clikc here to get the course: Identify & analyze functional hazards

Functional Hazard Analysis: Context

So how do we analyze software safety?

Before we even start, we need to identify those system functions that may impact safety. We can do this by performing a Functional Failure Analysis (FFA) of all system requirements that might credibly lead to human harm.

An FFA looks at functional requirements (the system should do 'this' or 'that') and examines what could go wrong:

- Does the function work when needed?

- Does the function work when not required?

- Does the function work incorrectly? (There may be more than one version of this.)

(A variation of this technique is explained here.)

If the function could lead to a hazard then it is marked for further analysis. This is where we apply the FHA, Task 208.

Functional Hazard Analysis: The Lesson

Topics: Functional Hazard Analysis

- Task 208 Purpose;

- Task Description;

- Update & Reporting

- Contracting; and

- Commentary.

Transcript: Functional Hazard Analysis

Introduction

Hello, everyone, and welcome to the Safety Artisan; Home of Safety Engineering Training. I'm Simon and today we're going to be looking at how you analyze the safety of functions of complex hardware and software. We'll see what that's all about in just a second.

Functional Hazard Analysis

I'm just going to get to the right page. This, as you can see, functional hazard analysis is Task 208 in Mil. Standard 882E.

Topics for this Session

What we've got for today: we have three slides on the purpose of functional hazard analysis, and these are all taken from the standard. We've got six slides of task description. That's the text from the standard plus we've got two tables that show you how it's done from another part of the standard, not from Task 208. Then we've got update and recording, another two slides. Contracting, two slides. And five slides of commentary, which again include a couple of tables to illustrate what we're talking about.

Functional Purpose HA #1

What we're going to talk about is, as I say, functional hazard analysis. So, first of all, what's the purpose of it? In classic 882 style, Task 208 is to perform this functional hazard analysis on a system or subsystem or more than one. Again, as with all the other tasks, we use it to identify and classify system functions and the safety consequences of functional failure or malfunction. In other words, hazards.

Now, I should point out at this stage that the standard is focused on malfunctions of the system. In the real world, lots of software-intensive systems cause accidents that have killed people, even when they're functioning as intended. That's one of the shortcomings of this Military Standard - it focuses on failure. But even if something performs as specified, either:

- The specification might be wrong, or

- The system might do something that the human operator does not expects.

Mil-Std-882E just doesn't recognize that. So, it's not very good in that respect. However, bearing that in mind, let's carry on with looking at the task.

Functional HA Purpose #2

We're going to look at these consequences in terms of severity – severity only, we'll come back to that – to identify what they call safety-critical functions, safety-critical items, safety-related functions, and safety-related items. And a quick word on that, I hate the term ‘safety-critical’ because it suggests a sort of binary “Either it's safety-critical. Yes. Or it's not safety-critical. No.” And lots of people take that to mean if it's “safety-critical, no,” then it's got nothing to do with safety. They don't recognize that there's a sliding scale between maximum safety criticality and none whatsoever. And that's led to a lot of bad thinking and bad behavior over the years where people do everything they can to pretend that something isn't safety-related by saying, “Oh, it's not safety-critical, therefore we don't have to do anything.” And that kind of laziness kills people.

Anyway, moving on. So, we've got these SCFs, SCIs, SRFs, SRIs and they're supposed to be allocated or mapped to a system design architecture. The presumption in this – the assumption in this task is that we're doing early – We'll see that later – and that system design, system architecture, is still up for grabs. We can still influence it.

COTS and MOTS Software

Often that is not the case these days. This standard was written many years ago when the military used to buy loads of bespoke equipment and have it all developed from new. That doesn't happen anymore so much in the military and it certainly doesn't happen in many other walks of life – But we'll talk about how you deal with the realities later.

And they're allocating these functions and these items of interest to hardware, software, and human interfaces. And I should point out, when we're talking about all that, all these things are complex. Software is complex, human is complex, and we're talking about complex hardware. So, we're talking about components where you can't just say, “Oh, it's got a reliability of X, and that's how often it goes wrong” because those types of simple components are only really subject to random failure, that's not what we're talking about here.

We're talking about complex stuff where we're talking about systematic failure dominating over random, simple hardware failure. So, that's the focus of this task and what we're talking about. That's not explained in the standard, but that's what's going on.

Functional HA Purpose #3

Now, our third slide is on purpose; so, we use the FHA to identify the consequences of malfunction, functional failure, or lack of function. As I said just now, we need to do this as early as possible in the systems engineering process to enable us to influence the design. Of course, this is assuming that there is a system engineering process – that's not always the case. We'll talk about that at the end as well.

Also, we're going to identify and document these functions and items and allocate and it says to partition them in the software design architecture. When we say partition, that's jargon for separating them into independent functions. We'll see the value of that later on. Then we're going to identify requirements and constraints to put on the design team to say, “To achieve this allocation in this partitioning, this is what you must do and this is what you must not do”. So again, the assumption is we're doing this early. There's a significant amount of bespoke design yet to be done....

Then What?

Once the FFA has identified the required 'Level or Rigor', we need to translate that into a suitable software development standard. This might be:

- RTCA DO-178C (also know as ED-12C) for civil aviation;

- The US Joint Software System Safety Engineering Handbook (JSSEH) for military systems;

- IEC 61508 (functional safety) for the process industry;

- CENELEC-50128 for the rail industry; and

- ISO 26262 for automotive applications.

Such standards use Safety Integrity Levels (SILs) or Development Assurance Levels (DALs) to enforce appropriate Levels of Rigor. You can learn about those in my course, Principles of Safe Software Development.

Meet the Author

My name’s Simon Di Nucci. I’m a practicing system safety engineer, and I have been, for the last 25 years; I’ve worked in all kinds of domains, aircraft, ships, submarines, sensors, and command and control systems, and some work on rail air traffic management systems, and lots of software safety. So, I’ve done a lot of different things!
#functionalhazard #functionalhazardindigitalelectronics #functionalriskassessment #functionalriskexample #functionalsafety #functionalsafetyanalysis #functionalsafetycourse #functionalsafetyonlinecourse #functionalsafetyppt #functionalsafetyrequirements #functionalsafetystandards #functionalsafetytechniquelearnfunctionalsafety #functionalsafetytraining #functionalsafetytrainingAustralia #functionalsafetytutorial #functionalsafetyvideo #hazardfunctiondefinition #howtodofunctionalsafety #Milstd882Technique #Milstd882Training #Milstd882tutorial #Milstd882Video #MilStd882E #whatisfunctionalrisk
Simon Di Nucci https://www.safetyartisan.com/2024/03/20/functional-hazard-analysis-task-208/

The 2023 Digest The 2023 Digest brings you all The Safety Artisan's blog posts from last year. I hope that you find this a useful resou...