Welding gloves

For the defense during welding of high temperature, molten metal, spark burning hand personal protective equipment. Made with cattle, pigs marmoset leather or split leather, according to the type refers to the different divided into finger, three and five fingers. Welding gloves have strict cosmetic requirements. A-one quality requirements leather thickness uniformity, plump and soft and elastic, leather surface villus meticulous, consistent, fast, and the color depth, no greasy feeling. Second: leather body lack full flexibility, leather face down slightly thick, color shades.

Anti-vibration gloves

To contact vibration, such as forestry, mining, construction, transportation and other departments with handheld vibration tools (such as chain saw, drill, etc.) to prevent oscillation caused by vibration of the occupational disease "white" personal protective equipment. Anti-vibration gloves in structure, mainly in the palm of your hand to add a certain thickness of foam, latex and the air interlayer to absorb vibration, etc. Gasket thickness is thicker, the air content, the more the better the damping. But zhang, the point at which the surface is too thick and easy operation.

Fire retardant gloves

The traditional fire fighter gloves made of asbestos materials, divided into two and five fingers, a large, medium and small three kinds of specifications. Because of asbestos fibers are irritating to human skin, is now rarely used. Now in general use flame retardant canvas or other fire flame retardant fabric making refractory glove, suitable for smelting furnaceman or other furnaces type of work.

Welding gloves fire flame retardant gloves for the environment

Anti-static gloves

Fabric composition containing conductive fiber. Another is by long fiber elastic acrylic knitted gloves, and partially in the palm of your hand TieFu polyurethane resin, or in the tip of the finger part TieFu polyamine resin or gloves on the surface of polyethylene coating.

Gloves made of conductive fiber containing accumulated in the hands of the electrostatic disappear soon. With polyurethane or polyethylene coated gloves mainly is not easy to produce dust and electrostatic. These products are mainly used in weak current, precision instruments, printing, assembly, product inspection, electronic industry in various research institutions, etc.

Fire helmet cleaning and maintenance

When on fire helmet shell is clean, use soap and water and soft cloth to clean. Don't recommend the use of grinding sand mold cleaning sponge surface screen and safety goggles, recommend the use of fire helmet supplier sea on offer professional detergent and soft cloth to clean, ensure the cleaning of the surface screen without damage. When clean cap lining, the cap can be lined with about 30 degrees Celsius temperature with mild detergent to clean warm water. As far as possible using tap water rinse cap inside the shell. Note: do not use hydrocarbon cleaning products or solvent cleaning and fire helmet surface screen and goggles.

After cleaning the fire helmet you need for each part, especially all the link of a thorough examination. Mainly check the correct part fixed way fixed parts, secondly whether there is a visible wear parts, helmet whether any damage. Ensure the normal regulation of the fire helmet. If there are parts damaged parts, it is only through the helmets are accredited suppliers to buy parts for installation, in order to ensure that the helmet in conformity with the specifications. Recommendations on a regular basis to qualified institutions to test whether a helmet to use standard.

If fire helmet clean up is completed, you can put on the helmet specific protection bag, or seal, such as closet, cabinets, etc. Storage place as far as possible away from humidity, illumination and exhaust gas. Avoid falling when stored in or knock against, because it may lead to damage of mask, helmet weaken shock absorption system function or damage to the surface protection coating. 

Prevention of occupational poisoning the use and maintenance of personal protective

The first step: According to exist in the form of poison and the main way into the human body , targeted for protection, personal protective equipment , including various types of respirators, safety glasses , goggles, protective visor , protective clothing , protective cap , protective skin protective gloves and painting classes and other supplies .

Step Two: If toxic substances enter the body through the respiratory tract , respiratory protection must be taken ; poisons absorbed through the skin , or operating in direct hand contact poison, should focus on skin protection , including the use of protective gloves and protective clothing ; if toxic irritation of the eyes , or practices lead to toxic spray hurt eyes, face , eyes should be taken , face protection.

The third step: in the workplace toxic substances , but also set the necessary sanitary facilities, such as toilet facilities , showers , changing rooms , etc., can be absorbed through the skin or on the local effects of toxicants great harm , but also with a skin and eye wash facilities .
Two . Use for their own personal protective equipment :

personal protective clothing choose us according to different occasions , the choice of the associated protective equipment and can not use, but according to the degree of occupational hazards and operating environment and other relevant factors , to make comprehensive choices, mainly from the following five aspects of how to select the appropriate their personal protective equipment .

( A ) the employer may respond to workplace occupational hazards identification, and workers may be exposed to a comprehensive assessment of the risks , in accordance with national regulations and standards requirements with a safe and effective personal protective equipment .

( 2 ) operating personnel using personal protective equipment shall meet the national standards, belonging to special labor protection supplies , to obtain special labor protection supplies safety certification mark , product packaging must be green LA certification mark.

( 3 ) use of personal protective equipment must be suitable for the user characteristics and operating environment requirements, to provide the necessary comfort and operating convenience.

( 4 ) various types of personal protective equipment when used in conjunction with each other can not interfere with each other .

( 5 ) without the use of effective , appropriate personal protective equipment is prohibited workers into high- hazard workplaces or rescue operations .

Equipped with personal protective equipment

personal protective clothing reserves each have the opportunity to participate at all levels of emergency treatment should reserve a certain amount of personal protective equipment , regular maintenance tasks to the scene of all staff are trained annually fit test . Regular or irregular organization drills. Filtration and adsorption ( tank ) should be at least more than the total number of C-level guards doubled , the choice of species should be able to cope with toxic substances that may be encountered amount needed , at least not less than 6 per class right, to replenish and updates.

   ( Two ) unexplained sudden public health incidents rescue package in dealing with individual protective equipment unexplained sudden public health incidents , at least two field staff to enter the scene , it should prepare two sets of rescue packages. Each should have the following equipment : ① closed airtight chemical protective clothing , ② portable gas operated full-face respirators , ③ chemical resistant gloves , ④ anti-chemical protective boots , ⑤ helmet , ⑥ portable gas analyzer .

   ( Three ) individual protective devices and the ability to respond to emergencies reserve is the basic guarantee of a public health emergency contingency plan clearly states the corresponding state of the individual protection requirements. According to the relevant laws and regulations, health administrative departments at all levels and disease control , medical treatment agencies to develop contingency plans, other public health emergencies occur the unit should also develop appropriate plans. In the plan -making process , to the tasks of the unit, and the presence of harmful factors , the development of a personal protection content contingency plans . Plans to deal with emergencies is to prevent a programmatic document , to have a strong operability in the plan , there should be a practical personal protection type, model , and enable mode . Public health emergencies have a greater chance occurrence , causative agent of emergencies caused by many kinds of emergencies in the actual investigation and handling of a variety of factors are often mixed . In the early stages of emergencies causative agent is not clear, thus increasing the protection of individuals handling emergencies difficulty . Disease control agencies and institutions in the Clinical Hospital after the occurrence of unexpected events bear rescue scene , investigation , and clinical management functions , so in all kinds of contingency plans in the individual protection work should have specific requirements, so disease control agencies at all levels , health supervision departments and clinical treatment units should have the corresponding reserves.

One , emergency field staff equipped with protective devices

   ( A ) the management and use of protective equipment training as an emergency response plan , equipped with personal protective equipment is only one part . On protective equipment management, and requires the use of protective equipment for staff training , etc., are also plans an indispensable component. Personal protective equipment only in the proper use and maintenance , based on to be fully protective effect. Protective equipment should be equipped with a tissue after use of the product for all users to accept training in the understanding of protective gear selection method , protection and use restrictions under the premise , to achieve a proper and workmanlike use . Personal Protective Equipment recommended various agencies at all levels should establish appropriate management mechanisms that regulate all aspects including the selection , purchasing, personnel selection , staffing, training in the use , maintenance, decontamination and disposal . When necessary, should also need to enter the dangerous field staff provide health checks , on the one hand to determine their ability to use protective equipment ( for SCBA and some air-purifying respirator for people with heart and lung function and physical requirements ) , and the other On the one hand timely detection of their health status , to facilitate early detection , early treatment.

   ( Two ) clinical emergency personnel protective device is equipped with multiple clinical emergency personnel should be equipped with C-level personal protection devices. For the treatment of victims of the contamination has been out of the emergency personnel , even if the victim carried insufficient inflicting poison threatening situations , also need to reach C-level protection standards . Levels of hospital emergency department or outpatient receives not only in the field of pollution has been removed by the patient , but also to seek treatment without receiving their decontamination treatment of the patient. Therefore, the hospital emergency department have a dedicated space to suspicious patients with decontamination of pollutants , while also equipped with a small amount of Class B protective clothing . Note that , C-level protective masks used filter element is the need to regularly updated over time can not play an effective protection. Protection of each of the filter element at different times, and poison this kind, concentration , and other relevant activities of the user . Right as emergency response operations use respiratory protective equipment, in order to ensure maximum protection performance , it is recommended to use as a disposable filter element generally , replaceable visor should be safe decontamination after repeated use is permitted .

   ( Three ) public emergency field personnel protective equipment with public emergency occurs, the first to enter the scene of the rescue personnel are police or firefighters generally . The former ( police ) present in our country is not equipped with dedicated anti-chemical personal protective equipment , so their responsibility is to the observed situation to give the latter ( firefighters ) . In case of fire , firefighters routine use of the " cut fire " or " from fire ," the device is intended to fire and to increase the heat resistance , in other harmful gases , liquid leakage , or in chemical fires, but also to take measures to control leakage , plugging leaks vent. Therefore, the fire agencies in addition to a certain amount of equipment, respiratory protection should also be equipped with a systemic protective equipment for its on-site with the fastest speed to complete rescue the injured, the task of controlling hazards .

Fire protective clothing standards

Fire protective clothing (hereinafter referred to as protective clothing) refers to the firefighters during fire fighting to protect their jobs and are usually dressed in clothes.

Performance requirements

Structure

Protective clothing for the imitation safari style, composed by the upload and download.

Protective clothing is divided into conventional-type protective clothing and cold-protective clothing two kinds.

Conventional flame retardant firefighter clothing should be moisture-resistant housing and detachable water permeability of the inner components.

Cold-protective clothing should be flame retardant and moisture resistant jacket detachable water permeability of the inner layer, warm layer, lining layer.


Main material properties

Protective clothing should be used with cover and logo has served the function of fabric, should have flame moisture resistance.

Housing of flame retardant, according to section 5.1 of this standard test method now, its damage length not greater than 12cm, continued burning time shall not be greater than 2s, smoldering time not more than 10s, may not have financial drop phenomenon.

Housings moisture resistance, according to Section 5.2 of this standard test method specified in its wet grade not lower than GB4745 in three requirements.

Resistant housing washing performance, according to the standard method specified in Section 5.3 the corresponding test, the flame retardant is damaged not be longer than 15cm, continued burning time shall not be greater than 5s, smoldering time not more than 20s, may not have financial drop phenomenon, its moisture resistance rating of not less than GB4745 to wet the two requirements.

Cover the tear strength, according to Section 5.4 of this standard test method specified, the warp and weft of the tear strength of not less than 32N.

Housings dry breaking strength, according to Section 5.5 of this standard test method specified in its warp and weft of the breaking strength of not less than 450N.

Cover wear resistance, according to Section 5.6 of this standard test method specified, worn 100 times, warp and weft dry breaking strength of not less than 200N.

Cover against radiant heat permeability, according to the standards specified in Section 5.7 of the test method, upon completion of an irradiation cycle, the temperature rise of the inner surface of the housing should not exceed 15 ℃.

Use protective clothing impervious water has served the function of the inner fabric is made of the performance of its water permeability according to the standards specified in Section 5.8 of the test method, and its resistance to hydrostatic pressure of not less than 4000Pa.

Cold-warm layer of protective clothing, the use of polyester or acrylic flakes made of artificial fur.

Cover seam breaking strength according to Section 5.5 of this standard test method specified, shall not be less than 360N.

Firefighters personal protective equipment and protective clothing standards of ordinary

Clothing protective equipment mainly refers to avoid firefighters subjected to high temperatures, drugs and other harmful environmental damage clothing, helmets, boots, hats, glasses and so on. There are fire-fighting suits, insulated clothing, avoid the fire service, disaster relief and clothing.

First, the battle suit and its supporting apparatus

Fire fighting services are firefighters put out the fire into the general fire fighting to protect themselves while wearing protective clothing, suitable for the fire "normal" state of use. Fire fighting services sub eighty-five style to the 1997 ceremony. Currently fire squadron equipped mostly eighty-five type fire fighting services, the clothing is divided into winter clothing, Xiafu, fireproof and waterproof clothing long fire suits four types, suitable for general fire fighting, does not apply near the fire and rescue operations help. 97 combat clothing is the latest successful research as a fire fighting service, with fire, flame, heat insulation, anti-virus and other functions, suitable for fire fighting and rescue work part.

1, fire on the human body

Burns, radiation, steam burns, frostbite, fatigue

2, fire fighter clothing work status

"Normal" state corresponds eleven firefighters operation in the face of the fire with water, or leaving the fire state a certain distance, the radiation heat flux 1.5kw/m2 below the temperature at below 60 ℃.

"Dangerous" state - the equivalent outside the room in a burning, or burning in a small building outside of the case with its radiant heat flux 1.5kw/m2 ~ 13.6kw/m2, temperature at 60 ℃ ~ 300 ℃ range.

"Critical" state - equivalent to similar violent burning in the vicinity of the crashed plane, or the occurrence of flashover situation encountered, the radiant heat flux 13.6kw/m2 ~ 200kw/m2, the temperature of 300 ℃ ~ 1100 ℃ range.

3, fire fighting services should have the protection and the associated measurement method

(1) Flame retardant (vertical burning test)

The 12-inch long strips of cloth placed in a propane flame to burn after 12 seconds, remove and measure the flame continued burning time, fire-retardant cloth carbonization time and length.

(2) Thermal Protective Performance (TPP)

① Thermal Protective Performance (TPP) Test: the fabric is placed convection and radiant heat source, the time required for recording two burns.

Time X heat source heat = TPP value

② TPP test method

TPP test is a 6 square inches of fabric placed on the total energy 2cal/cm2.sec thermal convection and radiant heat source, and then recording the time required to achieve the second degree burns, TPP value that is multiplied by the time cal/cm2. sec value. And vertical burning test different, TPP test can tell us simulate human skin through a variety of different fabrics to achieve two burns the amount of energy to be absorbed, ie the higher the value of the TPP fabric for the body exposed to high temperatures and the heat of the flame under the protection of the higher, the unit value of the TPP is the most direct thermal protective performance body connection.

③ hot human instrument thermal protection test (Thermo-man?)

To further simulate the actual extent of the flame burns the body, used to test the actual set of clothes in a simulated fire conditions, the degree of protection offered by the clothes. With this test, we can predict the body burns suffered two and three degrees, the body burns degrees lower, the greater the chance of survival.

Human body model test is to contain 122 temperature testers made from special glass-epoxy six inches high mannequin wearing fireproof suits, and make it the exposure to 12 propane flamethrower set synthetic 2cal / cm2.sec heat, the computer according to the temperature testers from 122 collected data to simulate human skin may be affected by the two and three degree burns and location.

4, protective performance

1) with a permanent protective function;
2) does not melt and does not have the function of combustion;
3) having the function is not broken;
4) resistance to chemical corrosion features;
5) durability;
6) comfort.

Fire insulation services security issues

Fire insulation services, sometimes referred to (fire protective clothing) is mainly for firefighters or other work in places of high temperature operating personnel compartment (anti-) thermal protection garments. According to Fu Jie fire equipment is understood that it is generally made from flame retardant fabric with vacuum aluminum composite materials are mixed together and made into, fire insulation services features: Asbestos, light weight, high strength, flame retardant , high temperature, thermal radiation, waterproof, abrasion, folding, and harmless to human body and so on, put on the garment can effectively protect the firefighters, hot places workers will not be even close to a heat source heat, flames, steam And burns a protective clothing.
According to the nature of disasters, each equipped with 8 sets of firemen combat uniforms. In addition, each firefighter is also equipped with F1 helmet, protective gloves, safety boots, breathing apparatus and other basic equipment.
Fire insulation services, sometimes referred to (fire protective clothing) is mainly for firefighters or other work in places of high temperature operating personnel compartment (anti-) thermal protection garments. According to Fu Jie fire equipment is understood that it is generally made from flame retardant fabric with vacuum aluminum composite materials are mixed together and made into, fire insulation services features: Asbestos, light weight, high strength, flame retardant , high temperature, thermal radiation, waterproof, abrasion, folding, and harmless to human body and so on, put on the garment can effectively protect the firefighters, hot places workers will not be even close to a heat source heat, flames, steam And burns a protective clothing.
According to the nature of disasters, each equipped with 8 sets of firemen combat uniforms. In addition, each firefighter is also equipped with F1 helmet, protective gloves, safety boots, breathing apparatus and other basic equipment.
A full range of personal protective equipment, but firefighters against dangerous magic. In addition, the detector type of equipment, lifting type of equipment, psychotherapy and disaster monitoring and early warning system for the scene, but also the necessary safety measures.
firefighting clothing is made from a special material, which can effectively cut off slightly firepower. Clothes with eye-catching reflective warning bar. Battle dress has two layers, according to different climate detachable lining is also a certain fire and high temperature capabilities of the material.
Chemical protective clothing for firefighters simple chemical products in the disposal of chemical spills in wearing costumes, but because of simple chemical warfare suits thin convenience features, can not enter the heavily polluted areas, usually in or around the use of chemical products used in decontamination.
Chemical protective clothing firefighters wear heavy heavy chemical warfare suits like astronauts in general, rely on air respirator to breathe. Dressing, it must be both collaborate. Heavy Chemical protective clothing can effectively resist corrosion, prevent inhalation of toxic gases firefighters, so you can enter into chemical poisoning rescue work area. The suit worth 20 million yuan.
Oil dazzling orange dress clothes, is the body from head to toe suit, can effectively prevent oil-contaminated gloves by a non-slip material, crawling oil contaminated items will not slip.
Insulated clothing clothes, masks, glasses and gloves as one of the silver costume. Able to resist at 800 ℃, 1111 ℃ when the temperature of the object up to the amount of radiation produced to protect the firefighters will not be burned at high temperatures.

Manual fire fighting services

firefighter suits are firefighters wearing fire fighting protective clothing. For fire operations has prevented nearly wearing the human body against heat, fire fighting operation is the most basic and appropriate personal protective equipment. The clothing is not in the following hazardous environments to provide protection to the wearer.

Through the fire zone or similar hazardous environments
Chemical spills Environment
Contact with large quantities of flammable liquids live in the environment
First, the structure
1, the inner and outer garments using detachable structure, four material combinations. From the surface layer, waterproof breathable layer, insulation layer and comfort layer, and the upper and lower clothing obvious place reflective signs.
2, set of clothing including tops, overalls. The clothing worn body protection just to enter the job site should also wear other personal protective equipment to protect the wearer other parts of the body, such as the feet, hands and head.
Second, the technical characteristics
1, the main performance: a perpetual flame burning compartment, waterproof, breathable, flexible, suitability and other functions in the nearby fire operations can effectively prevent heat conduction.

2, the main technical parameters

 Flame retardant: Damaged length ≤ 10cm; continued burning time ≤ 2s; without droplet phenomenon.
Breaking strength: warp and weft ≥ 650N.
Tear strength: warp and weft ≥ 100N.
Thermal stability: 260 ℃, 5min, shrinkage ≤ 10%, no surface change.
Hydrostatic pressure: ≥ 17Kpa.

Third, the method of dress clothing

Only in jacket and trousers were worn and proper closure to ensure the performance of clothing, dress according to the following methods must be properly dressed.

1, will be set into the fire boots trousers, put together with the pants, pull the zipper, buttoned waistband buckle, adjust the straps.

2, put on the jackets, fasten all enclosed area.

3, if necessary, ruffled collar and buckle clasp around the palate shelter together.

Four, clothing washing method

1, because the clothing is detachable and outside, we recommend that you only have to wash the outer layer, the outer washing, can be washed can be dry cleaning, washing when the water temperature is not greater than 40 ℃, use a neutral detergent.

2, such as the inner layer to be washed, preferably dry, use should be washed with soap wash, and finally use the shower and dry drying, breathable layer to prevent clogged pores, affecting the ventilation effect. NEVER use thump washing method. Inappropriate clothing washing method back to change the appearance and level.

Five, maintenance and repair

1, after wearing the protective clothing should be hung in a ventilated and dry place, not placed in a humid environment.

2, such as clothing hook small area appears timely to mend broken, damaged large areas can play a protective role is not allowed to enter the fire scene.

Six, storage conditions

1, Do not mix with oil during storage or corrosive materials in contact.

2, beware of hooking and prevent mildew.

3, stored in a dry and ventilated room and avoid rain, moisture, exposure.

The use of standard safety shoes

Firefighter boot are shoes and protective safety class class shoes collectively , but also a labor supplies . Protect feet and legs from foreseeable harm footwear.

PPE European standard EN344: 1997 " special security , protection , and work shoes ."

The standard safety shoes models design, the entire shoe uppers, shoe , tongue , insole , outsole and other structures and performance indicators were provided . Each item specified in the standard test methods and other similar standards similar to its principle of the method is also generally applicable to most safety shoes , the main indicators are:

a. Baotou impact resistance steel with a prescribed weight impact test hammer , Baotou Baotou upon impact should be less than the clearance height of the specified value , and Baotou in the axial direction of the test should be no penetrating cracks. It is noteworthy that the national standards of the hammer weight , size , height and impact testing machine structure different from the requirements such as the actual test should be distinguished.

b. puncture resistance test machine is equipped with a plate, nail plate is equipped with a test , the test is a truncated tip of the nail head , nail head should be greater than the hardness of 60HRC. The sole sample is placed on the test machine 's chassis , the position can test for nail piercing through the outsole , the test nails to pierce the speed 10mm/min ± 3mm/min soles until penetrate far, record the maximum required force . Each four points selected on the sole test ( of which at least one point of the heel ) , each point distance of not less than 30mm, and the distance from the inner bottom edge than 10mm. A non-slip bottom block , between the blocks should be pierced. 4 points in the two points should be located away from the implant bottom corner edge line distance of 10-15mm for testing. If the humidity will affect the results , soles should be soaked before testing plus 20 ℃ ± 2 ℃ deionized water 16 ± 1h.

c. conductive anti-static shoes, shoes and shoes like electrical performance through in the dry and wet atmospheric adjustment , will be filled with people clean the ball and put it inside the shoe metal probe device, using a predetermined resistance testing instruments, measuring the first two probe between probe and the third resistor. Under normal circumstances, conductive shoes required resistance should not exceed l00K ohms ; Anti-static shoes should be required 100K ohm resistor to 100M ohms.

d. insulation performance with a shoe as a sample , the inner end of the thermocouple installed at the center of the connection area , and the person filling ball shoes . Adjusting the temperature of the sand bath pot to 150 ℃ disabilities 5 ℃, the shoe placed thereon , so that the sand contacts the shoe outsole , with the temperature of the thermocouple connected to the testing apparatus , measuring the temperature inside the end of the corresponding time , given the increase in the temperature curve . Calculated from the sample placed on a sand bath after 30min from the increase in temperature . General requirements insulated shoes inner bottom surface temperature increase is less than 22 ℃.

e. heel portion of the energy absorption performance test instrument's maximum compression load 6000N, with a record load / deformation characteristics of the device. The shoe will take place with a steel plate , the test punch in the center portion of the inside of the heel against the inner sole . 3mm/min with disabilities speed 10mm/min load is applied . Draw the load / compression curve and calculate the absorbed energy E, expressed in joules .

f. slip outsole for the standard specifies requirements for non-slip soles coefficient test , but the skid block designs, specifications , etc. made ??provisions, such as the thickness of the sole , skid block height , the distance between the edge of the sole , etc. are required .

Helmet is to prevent physical damage to the head impact protection products

 Helmet is to prevent physical damage to the head impact protection products . By the cap shell , cap liner , and rear lower cheek with hoop components. Hemispherical cap shell , firm, smooth and have a certain flexibility , impact and puncture combat substance mainly composed of the cap shell to withstand the kinetic energy . Cap shell and leave some space between the cap liner can be buffered , dispersing instantaneous impact, so as to avoid or mitigate the direct damage to the head . Absorption of the impact properties, puncture resistance , lateral stiffness , electrical insulation , flame resistance is a helmet basic technical performance requirements.

Helmet can withstand the pressure is mainly used three principles : 1. Buffer damping effect : cap shell and cap liner between 25 ~ 50mm gap , when the object hit the Fire helmet , the cap shell deformation is not due to a direct impact to the head at the top . 2 . Dispersing stress : cap shell is oval or hemispherical , smooth surface , when the object fall on the cap shell , the object can not stay immediately fall ; And cap shell hit points to withstand the force transmitted to the surroundings through the cap lining cushioning to reduce the force of up to 2 /3 of the rest of the force through the cap liner gives the entire area of ??the skull to pass , so put the focus on the surface becomes a focal point , thus avoiding the impact force to a point on the cap shell stress concentration and reduce the force per unit area . 3 . Biomechanics : GB forth helmet must be able to absorb the 4900N. This is because the biological tests , the force in human cervical maximum limit , exceeding this limit will be harmed cervical spine , the light causing paralysis , severe life-threatening.

Use of protective clothing

Personal protective clothing including hats, clothing, pants, aprons, skirt, shoe covers, etc., to prevent or mitigate the thermal radiation, X-rays, microwave radiation and chemical contamination the body. Mainly in the following four categories:
Heat protective clothing: heat protective clothing should have insulation, fire-retardant, solid performance, but should be breathable, comfortable and easy to wear off; divided into non-adjustment and air conditioning two.
Anti-chemical contaminants Clothing: general there are two types: one is coated with chemicals on the anti-impermeable synthetic polymers or penetration of small and made of natural fabrics, and after some padding or waterproof coating additives layer processing, in order to improve its anti-through capabilities such as spraying pesticides personnel protective clothing; other is polypropylene, polyester and other fabrics made with prevent acid. These protective clothing, the state has some breathable, moisture permeability, oil and water repellent, anti-acid and anti-poison through specific criteria.
Microwave shielding Fire fighter clothing: There are two types: ① microwave shielding wire cloth clothes; ② metallised fabric microwave shielding clothing. This service has a shield coating flaking relatively soft and comfortable, and light weight.
Dust-proof clothing: general use denser cotton, linen or canvas production. Need to have good air permeability and dust resistance, form a one-piece style and spare type two, cuffs, leg openings shall be fastened with double buckle, and then sew on the outside buckle buckle Gaibu Jia, to prevent dust enter.

Personal protective clothing is configured

(1) Head Protection: Wear a helmet, suitable for the environment down there is the danger of an object attached; environment exists the danger of hitting objects.
(2) With fall protection: wear seatbelts, for applications that require climbing time (2 meters less); when there is danger of falling.
(3) Eye Protection: Wear safety glasses, goggles or face shield for the presence of dust, gas, vapor, mist, smoke or flying debris irritation of the eyes or face, wear safety glasses, goggles or face shield against chemicals (need to consider the overall eye and face protection while demand); welding operations, to wear out wearing welding goggles and masks.
(4) Hand protection: Wear an anti-cutting, anti-corrosion, anti-infiltration, insulation, insulation, thermal insulation, anti-skid gloves may be exposed to sharp objects or rough surface mirror, anti-cutting; possible exposure to chemicals, the selection of anti-chemical corrosion, chemically impermeable protective equipment; may surface when exposed to high temperature or low temperature, good thermal protection; may be exposed live parts, the choice of insulating protective equipment; possible exposure slick or slippery surfaces, use non-slip protective equipment, such as non-slip shoes.
(5) Foot protection: Wear an anti-smashing, anti-corrosion, anti-penetration, anti-skid, fire protection flowers shoe for Zala place objects that may occur, wear anti-smashing Firefighter boot; may be exposed to chemical liquids operating environment To prevent chemical liquids; attention in a particular environment or wear non-slip insulation or fire flower shoes.
(6)Personal protective clothing: thermal insulation, waterproof, anti-chemical corrosion, fire-retardant, anti-static, anti-radiation, etc., suitable for high temperature or low temperature operation to be able to heat; moisture or immersion environment to be waterproof; may be exposed to chemical liquids with chemical protective use; attention in a special environment retardant, anti-static, anti-rays.
(7) Hearing Protection: According to the "industrial enterprise workers hearing protection norms" optional ear protection; provide for communications equipment.
(8) Respiratory Protection: According to GB/T18664-2002 "respirator selection, use and maintenance of" choice. To consider whether hypoxia, whether there is flammable gas, the existence of air pollution, types, characteristics and concentration factors, select the appropriate respiratory protective equipment.