Forensic Engineers and Consultants

Tag Archive: hydraulic cylinder

  1. Load Holding Valves in Hydraulic Cranes

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    Hydraulic cranes absolutely rely on the integrity of their high-pressure fluid systems for safe operation.  A crane can become out of level when an outrigger cylinder leaks over time, possibly leading to a tip over.  A boom can collapse if a hydraulic hose ruptures.  It is not possible to absolutely prevent hydraulic cylinders from developing leaks or prevent hoses from rupturing during the life of a typical crane, therefore crane manufacturers provide load holding valves at key components to prevent these dangerous incidents.  In fact, ASME B30.5, Mobile and Locomotive Cranes, requires load holding valves or equivalent devices at outrigger cylinders, boom support cylinders, and boom telescoping cylinders. (more…)

  2. Gas Cylinder Leaks: What’s that Odor? Get out quick!

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    Pressurized cylinders filled with various gases are very common, from the propane fuel tank under your barbeque grill to acetylene for welding to fluorine for production of many common products.  A leak from almost any of these can cause damage or significant losses, from a fire to physical injury, or asphyxiation.

    Owner protection against losses and injury can range from nothing to significant, such as storage in ventilated closets or gas detection alarms. In one case the regulator valve on a small CO2 cylinder used in a bar to pressurize beer kegs broke off. The cylinder rocketed around the bar room, causing at least one serious injury. (more…)

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