English to Russian Tech/Engineering Geology IAGC safety manual/explosives

Most surface energy-source vehicles use hydraulic systems. The operating pressure is typically 3,000 psi (2.1 kPa); however, pressures as high as 6,000 psi (4.1 kPa) are not unusual.
Personnel other than the operator must keep a safe distance when the pressure is up. When the system is pressurized, leaks, blow-outs and ruptures can cause seriously disabling or fatal injuries.
Do not attempt to make adjustments or repairs until the system is pressured down. If adjustments must be made and the pressure is not zero, wear eye protection or a face mask. Do not forget the 40 to 100 psi (0.02 to 0.07 kPa) pre-charge in some systems, particularly in the reservoir.