Table of Contents
- 1 How often should a personnel platform trial lift be performed?
- 2 How often must a competent person inspect hoisting machinery?
- 3 What is hydraulic testing?
- 4 What are the 5 basic components of a hydraulic system?
- 5 What should the test pressure be for hydrostatic testing?
- 6 How is hydrostatic testing used in pipeline verification?
How often should a personnel platform trial lift be performed?
The load must be evenly distributed and held suspended for five minutes. A trial lift (above) must be conducted for each location the platform will be lifted to. This trial lift must also be repeated each time the crane is moved to a new position.
How do you test a hydraulic system?
Hydraulic Pressure Testing Circuit
- Filling the circuit with working fluid.
- Pressurizing the pressure line to the pressure line test pressure.
- Releasing the Pressure of the pressure line.
- Pressurizing the return and drain line to their respective test pressures.
What are the minimum components needed in a functioning hydraulic system?
Basic components to be used in hydraulic systems are categorized as follows. (1) Energy converters (hydraulic pumps, motors, and cylinders) (2) Energy controllers (directional, pressure, and flow control valves) (3) Accessories (reservoirs, filters, accumulators, sensors, etc.)
How often must a competent person inspect hoisting machinery?
Section 1926.550(a) requires a competent person to inspect the crane annually, prior to each use, and during use.
What is the minimum distance you should keep the aerial lift away from energized power lines?
10 feet
Maintain a minimum clearance of at least 10 feet, or 3 meters, away from the nearest overhead lines. Always treat powerlines, wires and other conduc- tors as energized, even if they are down or appear to be insulated.
When lifting personnel What is the minimum wire rope diameter?
All sheaves used in the boom hoist reeving system must have a rope pitch diameter of not less than 18 times the nominal diameter of the rope used. The operating design factor for the boom hoist reeving system must be not less than five.
What is hydraulic testing?
Hydraulic tests are used to evaluate the behaviour of equipment under real conditions of use by applying hydraulic stresses to it: Mechanical resistance under high pressure (burst and proof pressure) Behaviour under brief pressure increases (water hammer) Resistance to hydraulic fatigue.
Which two tests would you perform on a hydraulic system?
Often the only tests and actions performed on a hydraulic system involve changing the filters, sampling the oil and checking the oil level. As long as the system is operating, the mentality of “if it ain’t broke don’t fix it” frequently prevails.
What are the 6 basic components required to build a hydraulic system?
The primary components of the “plumbing” portion of the hydraulic system include the following:
- Reservoir.
- Filters.
- Shut Off Valves.
- Control Valves.
- Pressure Relief Valve.
- Hydraulic Fuses.
- Accumulators.
What are the 5 basic components of a hydraulic system?
Name the five components that make up a hydraulic system. Selector valve, hydraulic lines, actuating units, reservoir, and pump.
How often should a hoist be inspected?
every six months
Your ceiling track hoist system, mobile hoists, and any accessories should be serviced once a year and LOLER tested every six months. This will keep it in good condition and give you peace of mind that everything is in good working order.
How often should hoists be inspected OSHA?
OSHA requires that all active cranes must be inspected once a year at the minimum. However, depending on the cranes usage, additional inspections will be required. Crane inspections fall under two general categories based on the intervals between inspections.
What should the test pressure be for hydrostatic testing?
Hydrostatic testing is used to test the strength and leak resistance of the pipe and vessels by internally pressurizing with a test liquid. Test pressure is 1.5 times the pipe design pressure but should not exceed 85% of the pipe’s minimum yield.
What are the requirements for Gulf of Mexico hydrostatic testing?
Design and hydrotest requirements in the Gulf of Mexico are specified in 30 CFR 250.1003 and require testing with water at a stabilized pressure of at least 1.25 times the minimum acceptable operating pressure for at least 8 hours when installed, relocated, uprated, or reactivated after being out of service for more than 1 year.
How are cracks tested in a hydro test?
In a full-scale hydrotest study [ 39 ], cracks previously growing in a simulated soil environment were subject to a full hydrotest load spectrum, and then these cracks were tested again under lower pressure with some degree of pressure fluctuation.
How is hydrostatic testing used in pipeline verification?
Hydrostatic testing has been used to determine and verify pipeline integrity. Innumerable information can be obtained through this verification process; however, it is essential to identify the limits of the test process and obtainable results. There are several types of flaws that can be detected by hydrostatic testing: