Safety helmets are widely used on construction sites, and helmets protect our heads and reduce some injuries. But now all kinds of products have an expiration date, and helmets are no exception. There is nothing on the helmet, so I do n't know how to look at the helmet . In fact, the helmet also has a special way to see the expiration date. Let's take a look at it.
How to see the effective period of the helmet on the construction site:
There are 2 digital wheels on the inside of the brim. One of them is the annual ring with an arrow pointing to a certain year. The other is the moon wheel, and the arrow points to a certain month. The combination is the production year and month. There are three concentric circles on the helmet. The number in the smallest circle represents the year of production. For example: 05 stands for 2005; the area between the big circle and the small circle corresponding to each year is divided into 12 small blocks, each of which represents In a month, the small black dots represent the production month, and there are several small black dots in the corresponding area of ​​each year, and the helmet is produced for which month. The safety helmet is valid for 30 months, which is 2 and a half years.
The effective period of the helmet is different depending on the materials used in its manufacture, and the validity period is also different. The validity period is calculated from the date when the product is manufactured. Plant branches and braided hats are not more than two years old. Plastic caps and paper plastic caps are not more than two and a half years. FRP (Vylon steel) rubber caps are no more than three and a half years.
Hard hats should not be stored in places such as acid, alkali, high temperature, sun, moisture, etc., and should not be placed together with hard objects.
According to the requirements of the effective period of the helmet, the helmets that have expired should be tested by the safety management department of the use unit. After passing the test, they can continue to use them. After the test is performed once a year, if the test fails, the helmets will be tested. scrapped.
If you want to know how to look at the effective period of the helmet , you can know by reading the above. The helmet can only reduce our harm and can't prevent us from being injured. Therefore, we must pay attention to safety when using it on the construction site.
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