What are the service years and tests that should be done for electrical safety helmets?

Generally, the service life of electrical safety helmets shall not exceed three years.

The following principles should be paid attention to when using hard hats:

1. Before wearing, check whether the accessories of the helmet are damaged, whether the assembly is firm, whether the adjustment part of the cap lining is tightened, whether the socket is firm, whether the rope strap is tight, etc., if the distance between the hat lining and the cap shell is not between 25 50mm, the top rope should be adjusted to the specified range. Make sure that all parts are in good condition before use.

2 According to the size of the user's head, adjust the length of the cap band to the appropriate position (appropriate tightness). The safety helmet worn by high-altitude workers should have a chin strap and a back neck band and should be fastened to prevent the hat from slipping and taking off.

3. After the helmet is subjected to a large impact during use, regardless of whether the shell is found to have obvious fracture marks or deformation, it should be stopped and the damaged helmet should be replaced. Generally, the service life of the helmet shall not exceed three years.

4. The helmet should not be stored in a place with acid and alkali, high temperature (above 50), direct sunlight, humidity, etc., to avoid being squeezed by heavy objects or punctured by sharp objects.

5. The cap shell and liner can be washed with cold water and warm water (less than 50). Do not bake on a radiator to prevent the shell from deforming.

Expiration date: plastic years, glass cap years.

The helmet test items mainly include impact test and puncture test: impact test, less than 4900N; In the puncture test, the steel cone does not touch the surface of the headform.

Head protection helmet.

gb2811-2019；GB T30041-2013 "Head Protection Safety Helmet Selection Specification".

Electrical insulation performance: AC 1200V withstand voltage test.

1 minute, leakage current.

should not be exceeded. Safety helmets that meet the requirements of electrical insulation performance, and make a "D" mark on the cap;

Electric power construction construction site.

The hard hats worn by the workers are mainly used to protect their heads from injury. It can protect a person's head from injury or reduce the degree of head injury in the following situations.

1) When a flying or falling object hits the head;

2) When the operator falls from a height of 2m or more;

3) When there is a risk of electric shock to the head;

4) When walking or working in a low area, and the head is likely to collide with a sharp, hard object.

Electrical helmets are generally mostly blue.

A helmet is a piece of protection against impacts that hurt the head. It consists of a cap shell, a cap liner, a cheek strap and a back hoop. The cap shell is hemispherical, strong, smooth and elastic, and the impact and puncture kinetic energy of the striking object is mainly borne by the cap shell.

There is a space between the shell and the liner to cushion and disperse the instantaneous impact.

This avoids or mitigates direct injury to the head. Impact absorption performance, puncture resistance, lateral rigidity, electrical insulation, and flame retardancy are the requirements for the basic technical performance of safety helmets.

1. The service life of the helmet: calculated from the date of completion of manufacturing, the branch knitting cap cannot exceed two years, the plastic paper plastic cap cannot exceed two and a half years, and the FRP cap cannot exceed three and a half years.

2. The helmet is a shallow yinter hat made of steel or similar raw materials worn to protect the top of the head to prevent the impact from injuring the head.

Summary. The service life of the helmet, the latest standards and the precautions that should be taken in use are as follows:

1. Before use, check whether the appearance of the helmet has cracks, bruises, unevenness, and wear, whether the cap lining is complete, whether the structure of the hat lining is in a normal state, and if there are obvious defects on the helmet that affect its performance, it should be scrapped in time so as not to affect the protective effect.

2. The user cannot disassemble or add accessories to the helmet at will, so as not to affect its original protective performance.

3. The user can not adjust the size of the helmet lining at will, which will directly affect the protective performance of the helmet, once the impact of falling objects occurs, the helmet will fall out due to poor wearing or directly injure the wearer due to the impact of touching the top.

4. The wearer must wear the safety helmet correctly and firmly when using it, and cannot shake it, fasten the chin strap, and adjust the back hoop to prevent the safety helmet from falling off.

5. Do not punch holes in the helmet without permission, do not collide with the helmet at will, and do not sit on the helmet as a bench, so as not to affect its strength.

6. The helmet that has undergone an impact or has been tested should be invalid and cannot be used again.

5. The service life of the helmet, the latest standards and what should be paid attention to in use? (

The service life of the helmet, the latest standards and the precautions in use are as follows: (1. Before use, check whether the appearance of the helmet has cracks, bruises, unevenness, wear, whether the cap lining is complete, whether the structure of the cap lining is in a normal state, and if there are obvious defects on the helmet that affect its performance, it will be scrapped in time, so as not to affect the protective effect of the liquid cavity. 2. The user cannot disassemble or add accessories to the helmet at will, so as not to affect its original protective performance.

3. The user can not adjust the size of the helmet lining at will, which will directly affect the protective performance of the helmet, once the impact of falling objects occurs, the helmet will fall out due to poor wearing or directly injure the wearer due to the impact of touching the top. 4. The wearer must wear the helmet properly and firmly when using it, and should not stare at the lack of shaking, fasten the chin strap tightly, and adjust the hoop to prevent the helmet from falling off. 5. Do not punch holes in the helmet without permission, do not collide with the safety helmet at will, and do not sit on the helmet as a bench, so as not to affect its strength.

6. The helmet that has undergone an impact or has been tested should be invalid and cannot be used again.

7. For example, the helmet cannot be stored in an environment polluted by acid, alkali or chemical reagents, and cannot be placed in a high-temperature, sun-exposed or humid place to avoid aging and deterioration. 8. It should be noted that the safety helmet should be used within the validity period, the safety helmet woven by plant branches has a slag staring bridge validity period of 2 years, the effective period of plastic safety helmet is 2 and a half years, and the effective period of glass steel (including vinylon steel) and rubber safety helmet is 3 and a half years, and the safety helmet that exceeds the validity period should be scrapped.

It depends. The shelf life of a helmet varies depending on the material used in its manufacture, and the shelf life is calculated from the date the product is manufactured. The woven cap of plant branches shall not be more than two years, the plastic cap and paper plastic cap shall not exceed two and a half years, and the rubber cap of glass fiber reinforced plastic (vinylon steel) shall not exceed three and a half years.

A helmet is a hat that protects a person's head from injuries caused by falling objects and other specific factors. The helmet consists of a shell, a lining, a chin strap and accessories.

Protection mechanism: cushioning and shock absorption: there is a gap of 25 50mm between the cap shell and the cap lining, when the object hits the helmet, the cap shell will not directly affect the top of the head due to force deformation.

Dispersion of stress: the cap shell is oval or hemispherical, the surface is smooth, when the object falls on the cap, the object can not stay and slide off immediately; Furthermore, the force to bear at the point where the cap shell received a blow transmits to the circumference. The force reduced by the cushioning of the cap lining can reach more than 2 3, so that the force of the mountain is turned into a force surface, so as to avoid the stress concentration of the impact force at a certain point on the cap shell, and reduce the force per unit area.

Biomechanics: The standard stipulates that the helmet must be able to absorb 4900N, one is because of the biological test, the maximum limit of the human cervical spine when stressed, and the cervical spine will be injured if it exceeds this limit, causing paralysis in the light case, and endangering life in the heavy case.

The service life of the helmet: calculated from the date of completion of the manufacture of the product.

Plant twigs braided caps do not exceed two years.

Plastic caps and paper plastic caps are not more than two and a half years old.

FRP (vinylon steel) rubber cap is not more than three and a half years.

If it is exceeded, it can be used if it is qualified, but it is still necessary to test it regularly, the cycle seems to be a month, if there is a test failure, the batch will be scrapped in batches.

Calculated from the date of completion of manufacturing, the branch knitting cap shall not exceed 2 years. The plastic paper plastic cap is not more than a year. FRP caps are not over the years.

It is a mandatory standard.

The protective effect of the helmet: 1) to prevent the object from hitting and harming; (2) Prevent falling from a height and injuring the head; (3) Prevent mechanical damage; (4) Prevent pollution from hair damage.

Precautions for the use of safety helmets: (1) There should be a chin strap and a back hat hoop and tie it firmly to prevent the hat from slipping and falling off; (2) The thermoplastic helmet can be rinsed with clean water, not soaked in hot water, and cannot be baked on the radiator or stove to prevent the hat from deforming; (3) The use of the helmet exceeds the specified limit, or after being subjected to a more serious impact, although the crack is not visible to the naked eye, it should also be replaced. Generally, the service life of plastic safety helmets is three years; (3) Before wearing the safety helmet, check whether the accessories are damaged, whether the assembly is firm, whether the adjustment part of the cap lining is tightened, whether the rope strap is tightened, etc., and make sure that the parts are in good condition before use.

Hope it helps, dear