If I were allowed to draw a parallel, the first great iron ships to be built , like the SS Great Eastern, back in the 1850s, were not only engineering marvels, but also cutting in terms of safety equipment- watertight partitioning both transverse and lengthwise, automatic watertight doors, full double hull, steam cutoff valves, the works.
By comparison, by the time Titanic came along, less than 50 years later, ship construction on this scale was the norm and economic factor prevailed over safety equipment .
Titanic herself, although partitioned in 16 watertight compartments had the cross bulkheads only going up to E deck instead of A deck (as with the Great Eastern) and only double bottom instead of double hull, which would both be the deciding factors that led to her sinking.
Ironically, Great Eastern herself suffered a collision with a rock that opened a gash at least 60 times the size of the damage that that sank the Titanic, yet she arrived safely in port with her passengers none the wiser…

Can it be that this is also the case with spaceships of the Hiawatha’s generation? Maybe starship construction and operation has become so routine that proper safety equipment is thinned down in places where the risk is perceived as lminimal and where there haven’t been this kind of incidents (catastrophic fires) until now, because normal ship operations can not, under any circumstance, overload the systems to such a degree.

In a way, we can argue that placing the warp engine on any existing starship is a bit like strapping a high grade rocket motor on a rowboat – you are up for a terrifyingly fast ride into uncharted territory.

Sorry about the above and previous walls of text, but I’ve been told that not only am I to verbose for my own good, but also overly pedantic and needlessly interested in bringing to light all the little technical details.
So, in the end, I might just as well live up to my reputation then…

On Earth we are surrounded by 15psi of Nitrogen-Oxygen atmosphere (other gasses, too). However, NASA discovered it could reduce the pressure in a space capsule to 5psi if they used pure oxygen. This meant they could reduce the amount of air they carried with them (saving valuable weight) and a capsule wouldn’t have to be built as strongly (building a 5psi pressure vessel is easier than building a 15psi one).

Unfortunately, testing the pressure vessel for leaks on the ground meant pressurizing it to about 20psi (5psi of difference). They used pure oxygen for this test and that created a very hazardous environment (things that normally don’t burn suddenly do).

I can’t help but think the space vessels in Galaxion all use Nitrogen-Oxygen atmosphere at 15psi (maybe a little less). Fires are still dangerous, but not as much. If an oxygen line burst or an emergency oxygen tank exploded, that would up the oxygen content a bit (not to Apollo 1 levels, but maybe enough to overwhelm the fire suppression system). The latter case might also prevent the crew from donning oxygen masks and using halon to put out the fire.

I would like to see a bit more interaction between Zandarin and Aria since their names are at opposite sides of the alphabetical spectrum…