显示标签为“fire fighter clothing”的博文。显示所有博文
显示标签为“fire fighter clothing”的博文。显示所有博文

2014年2月18日星期二

Chemical protective clothing categories

According to Use Class is divided into:
1.Civilian typeFactory job type:
 firefighter suits using various chemical protective clothing
Rescue Type:
 Various chemical suits contingency environments , such as the fire brigade , rescue teams , EPA , health .Health Bureau

, Inspection and Quarantine and other emergency teams equipped with chemical warfare suits
2 .Military and defense Isolated type protective clothing:
 The airtight Antivirus material, to prevent agents, biological warfare agents and radioactive dust Damage clothing. War

against mustard gas and other chemical poisons have higher protection. Usually Siamese Type .
The air-permeable protective clothing:
 Breathable anti-virus material, to prevent agents, biological warfare agents and radioactive dust injuries Harm clothing

; war against mustard gas and other chemical poisons have higher protection. Usually split
3 .Chemical protective clothing for police Emergency rescue type:
 In the event of major chemical accidents , the order arrived on site maintenance , evacuation organization , delivery
Pass command when wearing chemical warfare suits .
Counterterrorism type:
 Major terror against organized crime environment crackdown on terrorists , hunt wearing when Paul Protect their chemical

warfare suits . Requires the ability to protect such VX.Industrial gas mass destruction and nerve gas , sarin , tabun and

other military warfare agents and terrorists easily accessible , such as chlorine , ammonia , hydrogen cyanide , etc.

Clothing has also asked.There are tight , flexible, easy to aim and movement.

2014年1月18日星期六

What is Fire avoid the fire service

Fire avoid the fire service fire when firefighters entered the venue vicious fire fighting and rescue wear HENGDA firefighter clothes , is one of the special protective equipment for firefighters . Fire avoid the fire service has good flame resistance , heat insulation performance , and has a light material, softness , etc.. The clothing is not only applicable to firefighters put out the fire in the fire fighting and rescue the flame zone , also apply to glass, cement, ceramics and other industries in the high temperature wear repairs , wide range of uses , has significant social benefits.
Fire avoid the fire service constitutes
Fire avoid the fire service by the HENGDA fire hood, jacket, pants , boots , gloves and other protective components.

2014年1月3日星期五

Effect of firefighters extinguishing protective clothing breathable performance

1. The physiological effects

Human thermoregulation center at hypothalamus, under its control, produce heat and cooling in dynamic equilibrium, can maintain the normal body temperature. In movement in the environment of high temperature such as fire, the body's metabolism speeds up, heat production increases, the fireman body will use skin vasodilation, blood flow speed, increased sweat gland secretion, respiration, etc., will be in the heat generated by the multilayer structure to surface through the fire fighters clothing, by radiation, conduction, convection and evaporation heat, to keep the temperature within the normal range. According to research, the circulatory system at the same time, the peripheral tissue thermal conductivity value can increase 5-6 times, this is called the heat stress. Biology has this kind of stress ability, to ensure the survival under thermal environment. But there is a limit to people's ability to heat stress, but also has great individual differences. If firefighters extinguishing protective clothing breathable heat dissipation performance is bad, and in a hot environment movement time is too long, more than heat stress ability of the individual, will appear below the thalamus sweat central obstacles, the body does not through perspiration evaporation heat, make the accumulation of excessive heat in the body and lead to body temperature, sweat, firefighters shortness of breath, heart rate, pulse quickened. If not timely relief and recovery will make firefighters, dizziness, headache, flustered, nausea, vomiting, environment in hot summer, and may cause a fireman syncope or shock.

According to research, the influence of heat stress on firefighters also embodied in the accumulation of heat inside the firefighting clothing, a large number of sweat will cause the decrease of blood flow, especially the decrease of the amount of plasma. At the same time, increased body temperature cause vasodilation, blood vessel diameter increased, make more blood sedimentation in the venous system, the return of the heart blood is reduced, resulting in blood flow and blood pressure decrease quickly, the heart is unable to provide enough health at the same time meet the needs of muscle, myocardial and brain blood supply, easy to cause chest and heart attack. Firefighters is heart disease one of the leading causes of death, the United States each year from heart disease death firefighters more than accounted for about 40% of all deaths.

2. The psychological impact

Heat mass inside the fire protective clothing, can make the firefighters fatigue degree increase rapidly, power, a big drop in excitatory declined obviously, confusion, depression and other negative emotions rise, higher operating error count, right decline, mental decline, velocity, decreased sensitivity and so on, seriously affect the operational efficiency.

2013年10月25日星期五

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.