Answer
CO2 system pressure testing have been mentioned in 2,5,10,15yearly tests.
CO2 bottle -58 bar,20 deg
Bursting disc-117 bar at 67 deg
Cylinder.press.testing-228 bar
Free volume -0.56
CO2 room temp -max 55 deg.
CO2 bottle wt-72.80kg
Siphon tube -1.4kg
CO2 g as wt-45.4 kg