FIRE EXTINGUISHER CLASSIFICATIONS

Watch, and read the transcript below:

 

 


Transcript:

 

In this tutorial, we will explore the foremost common classifications of fire extinguishers.

The first, and most common type of extinguisher is used for a Class A fire. These are fires fueled by ordinary combustible materials such as paper, wood, carbon, most plastics. The Class A fire extinguisher uses the water to smother the fire.

Class B fires are fueled by flammable liquids such as gasoline, kerosene, grease, and oil. Remember this classification extinguisher – think « B » for Boil, or oil. Class B extinguishers typically use liquid foam agent to smother the fire. You never want to use water on a Class B fire, as the water can cause the flammable liquids to spread like we accidentally drip water on a frying pan, and the grease pops, and in boiling liquid into the air.

Class C fires are fueled by electrical current traveling to wires, circuits, and outlets. Class C extinguishers most commonly use a dry chemical powder to smother the fire. In more sensitive environments such as a recording studio, a Class C extinguisher may use a halon gas that does not leave a residue. These are often referred to as clean agents. You would also never want to use water on a Class C fire for obvious reasons.

Most household extinguishers are a combination of Class A, B, and C ratings. These extinguishers can be used on ordinary combustible fires, liquid fires, and electrical fires.

The last of the four common classifications of fire is the Class D fire. The Class D fires fueled by combustible metals such as magnesium, potassium, and sodium. Class D fire extinguishers are used exclusively for Class D fires, and use materials such as sand, and dry chemical powders to smother the fire.

 

Special thanks to RVTCDEN who shared this video on Youtube.

 

And… Thank you Vince for your help! 😉

Facebooktwitterpinterestlinkedinmail

SPECTACULAR CROSSWIND LANDINGS at Bilbao Airport


Agrandir le plan

Some pilots experienced very difficult conditions at Bilbao Airport a few days ago as strong crosswinds – up to 60 miles per hour – swept the runway from starboard (in French: tribord) ie from their right handside, forcing several of them to go around (in French: remettre les gaz):

Facebooktwitterpinterestlinkedinmail

Jan. 23 – 1st flight anniversary of both BLERIOT XI & TU-126

Thanks to the new Twitter technology, we can now embed some Twitter posts. A great aviation history’s tweep – @OlePrimdahl – pays tribute to both the Russian Airborne Early Warning and Control (AEW&C) Tupolev Tu-126 Moss (January 23, 1962), and the famous French Blériot XI (January 23, 1909) flown by Louis Blériot to cross the Channel for the first time ie 6 months later:

Facebooktwitterpinterestlinkedinmail

PEARL HARBOR ATTACK & WWII

The Pearl Harbor Attack(called Hawaii Operation or Operation AI by the Japanese Imperial General Headquarters – Operation Z in planning – and the Battle of Pearl Harbor) happened on Sunday December 7, 1941 ie 70 years ago. Here is a video of remembrance of the infamous day which dragged the United States of America into World War II:

 

Pearl Harbor: A Landmark in History, part 5 from Pacific Historic Parks on Vimeo.

Facebooktwitterpinterestlinkedinmail

SAAB GRIPEN wins tender in Switzerland

11/30/2011 – The news broke today : The Swiss Air Force is to acquire 22 Sweedish SAAB GRIPEN fighter aircraft. The Swiss government had warned that they were compelled to squeeze their budget for this $3.36 billion bid as they could not afford to purchase the 33 fighter aircraft planned for the replacement of their F-5 Tiger fleet.

In spite of its outstanding performance during the tests as well as over the battlefields in Afghanistan, and in Libya, the Dassault Rafale was not chosen. Moreover, like the EADS Eurofighter/Typhoon, it was deemed too expensive for Switzerland could not buy as many aircraft within the budget allocated.

The Gripen is a good option for Switzerland since it is the cheapest one. The version to be delivered – JAS 39E/F or Gripen Demo/NG – is believed to be an excellent one – IRST (InfraRed Search and Track); ES-05 Raven AESA (Active Electronically Scanned Array) radar & SAR (Synthetic Aperture Radar); Electronic Warfare (EW) systems; Helmet Mounted Sight and Display (HMSD)…

However, this new-generation Gripen NG is a single engine fighter aircraft. It was tactically outperformed by its opponents, and last but not least, it has not yet been produced. As a matter of fact, the Swiss should be involved in the R&D works.

Facebooktwitterpinterestlinkedinmail