Learn Sub-System Hazard Analysis

Learn Sub-System Hazard Analysis.

In this video lesson, The Safety Artisan looks at Sub-System Hazard Analysis, or SSHA, which is Task 204 in Mil-Std-882E. We explore Task 204’s aim, description, scope, and contracting requirements. We also provide value-adding commentary and explain the issues with SSHA – how to do it well and avoid the pitfalls.

Topics: Sub-System Hazard Analysis

  • Preamble: Sub-system & System HA.
  • Task 204 Purpose:
    • Verify subsystem compliance;
    • Identify (new) hazards; and
    • Recommend necessary actions.
  • Task Description (six slides);
  • Reporting;
  • Contracting; and
  • Commentary.


Hello, everyone, and welcome to the Safety Artisan, where you will find professional, pragmatic, and impartial instruction on all things system safety. I’m Simon – I’m your host for today, as always and it’s the fourth of April 22. With everything that’s going on in the world, I hope that this video finds you safe and well.

Sub-System Hazard Analysis

Let’s move straight on to what we’re going to be doing. We’re going to be talking today about subsystem hazard analysis and this is task 204 under the military standard 882E.

Previously we’ve done 201, which was preliminary hazard identification, 202, which is preliminary hazard analysis, and 203, which is safety requirements hazard analysis.

With task 204 and task 205, which is system has analysis, we’re now moving into getting stuck into particular systems that we’re thinking about, whether they be physical systems or intangible. We’re thinking about the system under consideration and I’m really getting into that analysis.

Topics for this Session

So, the topics that we’re going to cover today, I’ve got a little preamble to set things in perspective. We then get into the three purposes of task 204. First, to verify compliance. Secondly, to identify new hazards. And thirdly, to recommend necessary actions. Or in fact, that would be recommended control measures for hazards and risks. We’ve got six slides of the task description, a couple of slides on reporting, one on contracting, and then a few slides on some commentary where I put in my tuppence worth and I’ll hopefully add some value to the basic bones of the standard.

It’s worth saying that you’ll notice that ‘subsystem’ is highlighted in yellow and the reason for that is that the subsystem and system hazard analysis tasks are very, very similar. They’re identical except for certain passages and I’ve highlighted those in yellow. Normally I use a yellow highlighter to emphasize something I want to talk about. This time around, I’m using underlining for that and the yellow is showing you that these are different for subsystem analysis as opposed to system hazard analysis. And when you’ve watched both sessions on 204 and 205, I think you’ll see the significance of why I’ve done it.

Learn Sub-System Hazard Analysis – this educational product is TAX-FREE!

By the way, you can get this lesson as part of a 12-lesson bundle, with a 50% discount – just click here!