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18:25 Nov 2, 2010 

in Rom-Engleza, de data aceasta:
1. first cycle is English for ... pumpdown; in Romanian = ciclu rapid
Most systems won't hold pump down indefinitely (information found under Pump Down Cycle!)
http://docs.google.com/viewer?a=v&q=cache:oj-O9vZxwAQJ:www.a...
2. Ciclul rapid este cel prin care pompa porneste in "full power" si trage cat mai mult. Pe masura ce mediul de protejat se apropie de vid, deci pe masura ce pompa respectiva isi face treaba, presiunea scazuta in interiorul mantalei actioneaza ca o pierdere de sarcina si debitul (de extras) scade. In acel moment se termina ciclul rapid al pompei. Sper ca acum s-a-nteles.

Asta-i ce am spus eu. Cu alte cuvinte (daca mai era cazul) ciclul rapid la care m-am referit are legatura cu punctul de functionare al pompei pe curba caracteristica si nu se refera la Sequence of Operations

Ca pompa functioneaza simultan cu supapa; alta poveste.

17:56 Nov 2, 2010 

And do not find cycle, full power or anything similar. I understand "combined" as concurrent. At the end of the day, it doesn't matter. The combined effect of pumping down (sucking out the excess fluid) and relieving the same fluid to the atmosphere - will relieve the interspace (jacket) overpressure. When one has an overpressure condition, one has to relieve ASAP, or the "thing" blows (read - explodes). It seems that for some technical reason, the jacket relief port (and associated relief valve) does not have the full capacity (flow rate) to release (fast enough) the fluid that is liable to leak from the inner vessel.

16:27 Nov 2, 2010 

I clearly stated: the first cicle - full power - of the vacuum pump!!! Of the pump. When it (the pump) starts :-) It has abosolutely nothing to do with your comment. Should we switch to Romanian?!? Would that bring about more accurate comments?

15:45 Nov 2, 2010 

It's concurrent - not sequential (no cycles) - the vacuum pump will evacuate the leakage fluid as fast as it can but if the jacket pressure doesn't drop enough, the relief port (relief valve assumed there) will "blow" away the excess

15:34 Nov 2, 2010 

"vacuum pump down" is technical slang for the first cicle - full power - of the vacuum pump; "effect [...] of vacuum pumping down", on the other hand, IS bad English.

08:25 Nov 2, 2010 

"...then the combined effects of vacuum pumping down and of the outer jacket relief port will relieve the interspace overpressure."