Precautions for Using Eye Shower
Jul. 27, 2020
The temperature of the water from the eyewash
According to the ANSI Z358-1-2004 standard, the temperature of the outlet water of the eye wash station and shower equipment should be lukewarm, so that the human body feels comfortable. However, if the temperature of hot water can make or accelerate a few substances in water and human body produce chemical reaction, should consult the opinion of medical expert, in order to ensure the most suitable temperature, and water temperature cannot change too big, or can cause bigger harm to human body.
To ensure that the temperature of the outlet water from the eyewash and shower equipment is constant, the manufacturing and installation of the equipment increase the difficulty. The simplest method is to divide the water supply into cold water and hot water systems, and install a composite valve to make the composite water temperature meet the normal needs. But when using this system, it is also very troublesome. Once an emergency occurs, there is no more time to adjust the water temperature.
The water outlet speed of the eyewash and shower equipment.
The water outlet speed of eyewash and shower equipment should be as stable and balanced as possible. The water flow from the sprinkler should be soft and present a water mist state to prevent excessive water flow. In this way, the flushing area can be enlarged, and the uncomfortable sensation of the eyes caused by the rapid water flow can be avoided.
The water flow of the shower is generally determined by the specific emergency equipment. According to the ANSI Z358-1-2004 standard, the water flow speed needs to pass the 15min test.
Specific requirements are as follows:
Separate emergency showers and shower nozzles need to ensure that the water flow rate is at least 75.7L/min (20 gallons min), and the system can continuously supply water for more than 15 minutes.
For a separate emergency eyewash, the water flow rate is relatively low, the minimum is not less than 1.5L/min (0.4 gallon min), and the system can continuously supply water for more than 15 minutes.
For the eyewash system of the compound eyewash, the water flow rate is at least 11.4L/min (3.0 gallons min), and the system can continuously supply water for more than 15 minutes.
The requirement for water pressure should not be lower than 206.84kPa, which can basically be met by current domestic water sources.
There should be a dust cap on each nozzle of the eyewash. When using the eyewash, the water flow will automatically open the dust cover. The dust cover is connected to the eyewash by a stainless steel wire chain. When the eyewash is not in use, the dust cap should be covered on the nozzle to ensure that the nozzle of the eyewash will not be blocked by dust or other substances. The valve of the eyewash should be easy to operate, and the opening time should not exceed 1s. The valve should have anti-corrosion function. Because the nozzle of the eyewash is equipped with a filter, it can prevent the sundries in the water from causing damage to the human eyes.
The above information is provided by emergency eye wash manufacturer.