(2) When the safety valve is used to vent flammable liquid, the outlet of the safety valve shall be connected to the accident storage tank. When the vented material is high temperature combustibles, the receiving container should have corresponding protective facilities. (3) The general safety valve can be emptied on the spot, and the vent should be higher than the operator's position of 1 m (m) or more, and should not be directed to the open fire location, sparking place and high temperature equipment within 15 m (m). The safety valve vents of indoor equipment and containers shall be led out of the roof and raised more than 2 m (m) above the roof. (4) When the safety valve inlet has a block valve, the block valve should be in a normally open state and sealed to avoid errors.
The reflex hammer is used for testing reflexes in regards to an orientating neurological examination. Testing of the individual reflexes can help provide conclusions as to nerve damage on the spinal cord. Depending on specification, a reflex hammer can also contain other neurological diagnostic instruments, such as brushes or needles. In addition to the reflex hammer, there is also a percussion hammer, which is used to asses organs via resonance waves.
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A valve used to prevent damage to equipment or piping such as boilers and pressure vessels due to overpressure. When the fluid pressure in the protected body reaches a certain value slightly higher than the normal working pressure (ie, the valve opening pressure), the safety valve automatically opens to discharge part of the fluid to lower the pressure. When the pressure drops to a value slightly below the normal working pressure (ie, the valve return pressure), the safety valve automatically closes, stopping the discharge of fluid and maintaining a seal.
Pay attention to the following points when setting up the safety valve:
(1) When there are gas and liquid two-phase materials in the container, the safety valve should be installed in the gas phase.
The four main points of setting up the safety valve
Safety valve