I frequently need to run long-term tests which have some potential for damage or harm if e.g. someone disturbs the test apparatus without being aware that it's running a test.
Say for example testing an actuator to see how many cycles it can do before failure.
There are two risks I want to avoid:
1) Harming a bystander who is unaware that the apparatus is performing tests.
2) Accidentally leaving the premises when a long-running test is executing, creating e.g. a fire hazard when the test is left unattended.
What are the traditional ways of indicating that a potentially-dangerous apparatus is running and should be disabled at the end of the day?
A red light next to the apparatus might be sufficient to indicate that it's operating, but I think that would not prevent someone from setting up a long-running test over the weekend and potentially causing some event over the weekend.
I want to acknowledge in advance that this question is subjective, but I believe it meets the criteria for a constructive, subjective question in the sense that it's relevant to this community and likely to generate useful, constructive answers.
This question (IMO) is a better fit for Electronics rather than SQA since SQA is specifically for software, whereas electronics may include electronic testing.