2. “Emergency Eyewash and Shower Equipment” (CNS 14251 T2048)
This standard is basically formulated in Taiwan with reference to ANSI Z358.1 in the United States, and specifically requires the showering range of emergency shower eyewash devices: “The emergency shower device should cover the entire shoulder width, and the emergency eyewash device should be able to cover both eyes at the same time. Width, and the distribution within the spray range should be uniform.”, made specific requirements for the height of the emergency shower eyewash and the width of the water curtain. At the same time, very specific requirements are also made for water pressure, water quality, water temperature, setting space, and marking.
(4) European and American standards
1. ANSI Z358.1 in the United States
This guarantee is no longer cumbersome. Anyway, in this standard, you can find the original source of GBZ/T 225 requiring workers to get flushed within 10 seconds. In addition, detailed requirements are also made for the spray range, water quality and water temperature of the emergency spray eyewash.
2. Other countries
Others such as Australia’s AS4775 standard and the old EU standard DIN 12899-3 are more detailed standards, so I won’t list them one by one.
(5) Common mistakes in practice
1. Random instructions to set up simple flushing facilities
Some small and medium-sized enterprises may indeed have not set up professional emergency shower eyewashes in order to save money. At this time, whether our coders or department experts are out of sympathy, we ask enterprises to set up a low-end version of “the so-called emergency shower eyewashes”. “. Generally, the eyewash is made to install the faucet upside down, and the shower is called a household shower (generally plastic). The editor thinks it is very, very unreliable. After reading the Taiwan standard, it is clear that the water curtain produced by you flipping a faucet can cover the flushing requirements of two eye burns at the same time. Can the radius of the water curtain of ordinary shower shower cover both shoulders? Can a whole body burn ensure that the whole body is washed for a long time at the same time? In the final analysis, it is because there is no standard for the equipment parameters of emergency shower eyewash in the mainland.
2. All places are required to follow the emergency shower eyewash
For example, the 4S shop requires an emergency shower eyewash, which is a bit too much. Of course, it is worth thinking about whether to install an eyewash, which will be mentioned later.
(6) Which substances need to be set?
1. Referring to the practice in Taiwan, set up emergency shower eyewashes with Class C Class I and Class D specific chemicals.
Figure 2 Screenshot of the list of burn substances in Taiwan
2. Refer to the substances listed in the appendix of the domestic occupational chemical eye and skin burn diagnostic criteria.
Let’s go back to the 4S store here. According to Appendix Table A1 of GBZ 54 “Occupational Chemical Eye Burns”, toluene in organic solvents can cause eye burns. If this diagnostic standard is reliable, then it is required to set up emergency eye washers. necessary.
Figure 3 List of substances that can cause eye burns
Figure 4 List of substances that can cause skin burns
(7) Write at the end
Whether it is necessary to install an emergency shower eyewash, where and how much should be installed should be evaluated. China can also refer to ANSI Z358.1 of the United States to formulate corresponding standards for emergency shower eyewashes, which not only reflects the advantages of socialism, but also meets the practical needs of enterprises and coders.