Popular hydraulic systems must store fluid under high pressure. Three kinds of hazards exist: burns from the hot, high pressure spray of fluid; bruises, cuts or abrasions from flailing hydraulic lines and hydraulic injection of fluid into the skin. Safe hydraulic system performance requires general maintenance.
What are the hazards of hydraulic work?
The fluid, under tremendous pressure, is also hot. The worker then is exposed to three kinds of hazards: burns from hot, high-pressure fluid; bruises, cuts or abrasions from flailing hydraulic lines and hydraulic injection of fluid into the skin. Many systems store hydraulic energy in accumulators.
Is hydraulic fluid combustible?
Hydraulic fluid is combustible and when high-pressure leaks form a fine air mist close to heat sources then fire becomes an increased risk that must be addressed by using appropriate guarding or fire-resistant fluid. Hydraulic hoses tend to be one of the components within a hydraulic system that are most likely to fail.
Is it safe to use a hydraulic system?
Each user must have a safe and adopted approachto the use of hydraulic systems. You may be burned or suffer bruises, cuts or abrasions, even worse, a septicemia due to an injection of high-pressure oil. If this happens, take it seriously even if you do not feel pain. You do not have the magic regeneration powers of Deadpool.
How many terms are in Chapter 2 of the hydraulics exam?
Chapter 2 Fluid Power Systems 31 terms DasiaRose8 Hydraulics chapter 6-8 117 terms christian_massie8 Hydraulics Final Exam 158 terms burntrider Other sets by this creator Motors Control Ch. 35,36,37 45 terms angela_highley7PLUS Motors Ch. 32,33,34
What are the dangers of hydraulic systems?
Three kinds of hazards exist: burns from the hot, high pressure spray of fluid; bruises, cuts or abrasions from flailing hydraulic lines and hydraulic injection of fluid into the skin. Safe hydraulic system performance requires general maintenance.
Why are hydraulic systems important?
Hydraulic systems are popular on many types of agricultural equipment because they reduce the need for complex mechanical linkages and allow remote control of numerous operations.
What happens when you have a pinhole in a hydraulic hose?
A person may notice a damp, oily, dirty place near a hydraulic line. Not seeing the leak, the person runs a hand or finger along the line to find it. When the pinhole is reached, the fluid easily can be injected into the skin as if from a hypodermic syringe.
Why do hydraulic accumulators store oil?
These accumulators are designed to store oil under pressure when the hydraulic pump cannot keep up with demand, when the engine is shut down, or when the hydraulic pump malfunctions. Even though the pump may be stopped or an implement disconnected, the system is still under pressure.
How much pressure does hydraulic fluid need to be stored?
To do their work, hydraulic systems must store fluid under high pressure, typically 2,000 pounds or more per square inch. One hazard comes from removing or adjusting components without releasing the pressure. The fluid, under tremendous pressure, is also hot. The worker then is exposed to three kinds of hazards: burns from hot, ...
How to insure control of a hydraulic unit?
To insure control of the unit, keep the hydraulics in proper adjustment.
How to tell if a pinhole is a leak?
Not seeing the leak, the person runs a hand or finger along the line to find it. When the pinhole is reached, the fluid easily can be injected into the skin as if from a hypodermic syringe. Immediately after the injection, the person experiences only a slight stinging sensation and may not think much about it.
What is the flash point of hydraulic fluid?
A heated petroleum based hydraulic fluid presents a considerable fire hazard, particularly in those processes where ignition sources are usually present. A typical petroleum based hydraulic fluid has flash point that range from 300 to 600 degrees fahrenheit and an auto ignition temperature of 500 to 750 degrees fahrenheit. However, when hydraulic fluid is accidentally discharged under high pressure an easily ignited fine oil mist is sprayed over the surrounding area. When the mist reaches an ignition source the result can be a torch-like ball of fire. [1] If the oil mist is confined, a violent explosion can occur.
What is a modification on a hose?
Evidence of excessive abrasion or scrubbing on the outer surface of a hose, rigid tube, or hydraulic fitting. Modification must be made to eliminate the interference of the elements in contact, or otherwise protect the components. [2]
Do hydraulic hoses need to be inspected?
All hydraulic hoses, tube lines and fittings should be periodically inspected. Any deterioration must be carefully examined to determine whether further use of the component would constitute a hazard. Conditions such as the following should be sufficient for consideration of replacement:
Why is hydraulic control dangerous?
Hydraulic control is unbeatable for its power density and flexibility of use. It makes equipment move faster, with more power and more articulation than any other technology, and for that reason, it can be extremely dangerous.
Why is it important to have a retaining wall around hydraulic equipment?
It's good practice to provide a retaining wall around hydraulic equipment to ensure no fluid can leak onto walkways or into the environment. Physical barriers should be provided to prevent fluid jets coming into contact with the workforce.
How to prevent whiplash from a hose?
If people cannot be kept outside the range of loose hoses then end fittings should also be physically restrained to prevent whiplash from the flying, broken hose ends.
What are some examples of unacceptable risks?
Some examples include: Unacceptable risks - Any working environment where no risk assessment has been carried out or the people involved are not adequately or appropriately trained.
Is it safe to start up hydraulic equipment?
Starting up , or when shut down can be some of the most dangerous times for working near hydraulic equipment. Particularly first off start-up or after large systems have been shut down for maintenance. It's vital to read and understand the equipment's safe start up and shut down isolation procedures, before completing any work.
Do hydraulics fall under PED?
With the exception of accumulator safety blocks that always need a certified relief valve, hydraulic systems do not generally fall under the PED, although always check if you are not certain with new designs. With Pneumatics the compressibility of air creates a real risk of uncontrolled movements or unsafe release.
Can high pressure exceed life?
Continued working at high-pressure, particularly if the loads are cyclic, may eventually exceed the recommended, and actual life of a component.
What can destroy buildings and cause fatalities?
Explosions of steam systems can destroy buildings and cause fatalities
How many gallons of MCHM was spilled in a tank?
According to a CSB report, in January 2014 a tank near Charleston, WV developed two small holes, and the bottom of the tank broke open, spilling 10,000 gallons of MCHM, mixed with propylene glycol phenyl ethers, onto the soil and gravel under the facility and into a nearby river. The slow development of these holes was probably the result of
What happens if 50% acetic acid is mixed with ethylene glycol?
T or F: In a process where 50% acetic acid solution could accidentally come into contact with ethylene glycol, hazards that should be given careful consideration include the possibility of polymerization, heat generation, and pressure build-up.
What is hydraulic oil?
A hydraulic system uses lubricating oil for lubrication.
Why do hydraulic cylinders have to be retracted?
Hydraulic cylinders that are not in service must have their rods retracted to prevent contaminants from settling on any exposed metal and entering the system when the rod is moved.
What type of switch is used to control fluid power?
T/F. True. Automatically operated switches are the most common type of switch used for electrical control of fluid power systems.
How to keep air out of hydraulic system?
Air can be kept out of a hydraulic system by maintaining the correct hydraulic fluid level in the reservoir.
What happens when you escaping air from a pneumatic system?
In addition to the noise, escaping pressurized air from a pneumatic system can create a clean area and wear grooves in surrounding surfaces.
What happens if viscosity is incorrect?
If viscosity is incorrect it can damage components, causing sluggish operations and serious operating problems.
Can a hose be used in another application?
Hoses that are designed for one application should never be used in another.
What is hydraulic system?
Hydraulic systems on agricultural equipment are used to complete such maneuvers as lifting the buckets on skid steers or adjusting the position of combine headers. Hydraulic fluid moves through very small openings within an operating system, and it is under tremendous pressure that can exceed 2,000 pounds per square inch (psi). Some newer and larger pieces of equipment have hydraulic systems with pressures that exceed 3,000 psi. (Running water from a household faucet typically measures 40 psi.)
What happens if you release hydraulic pressure?
Release the hydraulic pressure in an operating system prior to removing or adjusting components. The hot fluid in the system is under extreme pressure. If a worker is exposed to hydraulic fluid while removing or adjusting components, he or she may sustain burns, bruises, cuts, abrasions, or injection of fluid into the skin.
How to locate a hydraulic leak?
When trying to locate a leak in a hydraulic line, wear eye protection and gloves. Run a piece of paper, wood, cardboard, or Plexiglas along the hydraulic line (as shown below) to determine the location of the leak. Always relieve the hydraulic pressure in an operating system before detaching or attaching a hydraulic line to make necessary repairs.
How to relieve hydraulic pressure on a machine?
Before leaving the machine, lower the hydraulic work unit to the ground and relieve hydraulic pressure by moving the control valve back and forth several times .
How to operate a hydraulic cylinder?
Follow these recommendations when using equipment with hydraulic systems: 1 Before leaving the machine, lower the hydraulic work unit to the ground and relieve hydraulic pressure by moving the control valve back and forth several times. 2 Park the machine in an area where children are unlikely to come into contact with it. 3 To keep the machine in place during transportation, lock the cylinder stops. 4 Use cylinder stops, locks, or blocks for raised equipment or components when servicing hydraulic components or performing maintenance. 5 To reduce the risk of escaping oil, make sure all the line connections within the system are tight. 6 Use a nonvolatile cleaning solution when washing parts. 7 Keep hydraulics properly adjusted for better control of the machine.
What is PPE in hydraulics?
Wear personal protective equipment (PPE) when performing maintenance on hydraulic systems, including gloves and eye protection. Do not rely solely on the hydraulic lift if you must work on hydraulic components with the system raised. Set the working unit on blocks as a precautionary measure.
Why should hydraulics be properly adjusted?
Keep hydraulics properly adjusted for better control of the machine.
