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On Sep 16, 11:16 pm, John Doe wrote:

1. Consider that PMA2 can possibly be used as an airlock. If you have
some
primitive pressure suits stored in node2, then the stranded crewmembers
could ingress PMA2, close the hatch to the station, then depressurise
(equalise with the ship on other side which happens to be "vacuum" :-)
and open hatch to outside and then move towards a waiting Soyuz ship and
ingress through its airlock. (attach line to PMA2, then propell yourself
towards the nearby soyuz, if you fail to latch on to the soyuz, you pull
yourself back to station and try again).

2. If NODE2 has no spare suits, then someone in the soyuz would have to
EVA
with spare suits, place them in an already depressurised PMA2, close
the hatch, let the crew then repressurise it, put the suits on and then
egress.

3. If a crewmember went from 14.7 to 5psi with only O2 pre-breathe for a
few minutes+ whatevcer time it takes for a PMA2 to equalise to vaccum,
how long before "the bends" symtoms would appear ? Could they go for say
30 minute at 5psi in pure O2 and then repressurise in the soyuz and be
relatively OK ?

1. Not viable. The crew can't just "jump" to the Soyuz.


Umm, sure they can. It's ill-advised and no one in their right mind would
do it given a choice, but again, emergency situations dictate slightly
different procedures than non-emergency ones.



2. Not viable, it would take at least 2 Soyuz crew members and so
where is the room for the 'rescued" crew


Sure there is. Again, in John D's scenario, you're simply using the Soyuz
to ferry them to a viable part of the station.

Again, against all protocols currently, but again, the point is to think
outside the box and way the risk.




3. immediately.


True, but again, is it worth it?



None of your ideas are viable