Question 182General Subjects - Assistant Engineer
70% to passA precharged bladder-type accumulator used in a hydraulic system, can be potentially dangerous if _______________.
Athe bladder contacts the top of the poppet
Bthe inert gas is exposed to hydraulic oil
Cit is precharged with dry nitrogen
Dthe charging valve stem breaks while at normal working pressure
AI Explanation
The correct answer is D) the charging valve stem breaks while at normal working pressure. A precharged bladder-type accumulator can be potentially dangerous if the charging valve stem breaks while at normal working pressure. This is because the high-pressure inert gas (typically nitrogen) within the accumulator will rapidly escape, potentially causing the accumulator to become a dangerous projectile. The other options are incorrect because: A) the bladder contacting the poppet is not inherently dangerous, B) exposure of the inert gas to hydraulic oil is not a safety concern, and C) using dry nitrogen as the inert gas is a common and safe practice.
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