What precautions should you take when working near an open flame?

What precautions should you take when working near an open flame?

1) Tie back long hair and roll up long sleeves when working near an open flame. Confine loose clothing. 2) Do not reach across an open flame. 3) Know the location and proper use of fire blankets and fire extinguishers.

What safety precautions should be used when flame testing metals?

Safety Considerations Students should wear chemical splash goggles and avoid contact with solutions when performing this experiment. Wash hands after handling materials used to prepare for or perform this experiment. Caution should be taken around open flames (Bunsen burner or propane torch).

What are the three main safety rules when working with open flames?

Personal Safety Participants with long hair should secure it away from the face so it doesn’t fall down into the flame. Remove any long jewelry that might reach the flame. Safety gear is also key. Wear goggles when using the flame, especially if you’re heating a glass container or using chemicals.

What precautions should be taken when using a Bunsen burner?

Procedure

1. Place the Bunsen burner away from any overhead shelving, equipment or light fixtures by at least 12 inches.
2. Remove all papers, notebooks, combustible materials and excess chemicals from the area.
3. Tie-back any long hair, dangling jewelry, or loose clothing.

Why is the safety flame not good for heating?

To light the burner and when it is not being used to heat anything because is easy to see and will not readily set fire to clothing etc. This flame is unsuitable for heating as it coats surfaces with soot (carbon).

Is safety Flame open or closed?

air hole closed (safety flame used for lighting or default), 2. air hole half-open, 4. air hole fully open (roaring blue flame).

What Colour is the safety flame?

yellow

Which flame is the hottest?

Despite its icy hue, the hottest color of flame is violet. At over 1,650 degrees Celsius, violet flames’ high temperatures can slice through nearly any metal, glass, or rock with ease. For this reason, you can often spot violet and blue flames at the end of welding torches.

How hot is a safety flame?

The yellow flame, commonly known as the safety flame, is the coolest flame at almost 300 degrees. The blue flame, can reach temperatures of approximately 500 oC and is almost invisible in a bright room.

Is white fire hotter than blue fire?

The part of the flame closest to the candle or the wood will usually be white, since the temperature is usually greatest near the fuel source. The color blue indicates a temperature even hotter than white. Blue flames usually appear at a temperature between 2,600º F and 3,000º F.

Is yellow flame hotter than blue?

“Blue flames burn hotter than orange flames, with temperatures reaching up to 3,000 degrees Fahrenheit.” So, blue fire is hotter than yellow or orange fire.

Why is a blue flame preferred over a yellow?

A blue flame from a Bunsen burner transfers more energy than a yellow Bunsen flame as complete combustion gives a blue flame. … This is because a yellow flame produces a lot of soot. Carbon monoxide, soot and water vapour are produced as well as carbon dioxide.

What does a yellow flame mean?

A yellow flame indicates improper adjustment and a possibility of excessive carbon monoxide. Do not use the oven as a source of heat.

What causes a blue flame in a wood fire?

If you look into a wood fire, then up in the night sky, you might see the same colors in the flames as you see in the stars. The blue in wood flames comes from carbon and hydrogen, which emit in the blue and violet. Copper compounds make green or blue, lithium makes red.

Is blue the hottest flame color?

While blue represents cooler colors to most, it is the opposite in fires, meaning they are the hottest flames. When all flame colors combine, the color is white-blue which is the hottest. Most fires are the result of a chemical reaction between a fuel and oxygen called combustion.

Why is our sun not blue?

Since shorter wavelength blue light is scattered more efficiently than longer wavelength red light, we lose some of the blue tint of the sun as sunlight passes through the atmosphere.