FIELD: machine building.
SUBSTANCE: helium is added into composition of working gas during charging of the pneumatic block cylinder in the amount determined by its partial pressure in the cylinder, tightness of the pneumatic block is controlled after charging of the cylinder by working gas, by means of measurement of helium leak with a mass spectrometry helium leak detector, and pneumatic blocks are put in service, if helium leak from them does not exceed the permissible value.
EFFECT: simplified operation of a pneumatic block and increased reliability of its operability preservation during long-term operation.
2 dwg
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