I couldn't find a good tag for the disabling, neutralization, or passivation of a spacecraft at EOM, or some subsystem thereof when no longer needed, when posting the question Have all of InSight's engines/thrusters been permanently disabled now that it has landed?. Any thoughts?
end-of-life currently has 17 questions.
The description is currently
Questions related to extending the lifetime, and determining when the useful period of a satellite has ended.
In addition to what is written above in this meta question, @uhoh makes a good point that there is no good tag for "EOM-associated activities. EOM is a moment in time, or a system status."
I also think the current definition is too narrowly-written for satellites. Landers and rovers should be fair game.
I am proposing changing the definition of end-of-life to
Questions related to the lifetime or end-of-mission of a spacecraft. This may include determining when the useful period has ended, extending the lifetime, and safely disabling/passivating/disposing it.
I welcome concerns or improvements to this proposed definition. In particular, we want this distinctive from the debris tag, but I'm not sure how to word that.
I'd go for passivation. While a lot of it occurs at EoM, it is a separate process, and could occur to subsystems long before EoM of an object -- e.g Skylon venting it's launch tanks after achieving orbit.
As a downside, it has a different meaning in chemistry, and that meaning may apply to aspects of plumbing.
The early Apollo Applications Program documents talked of passivating between launch and commencement of orbital operations