What does upper flammable limit mean?
What does upper flammable limit mean?
The highest concentration of a vapor or gas (the highest percentage of the substance in air) that will produce a flash of fire when an ignition source (heat, arc, or flame) is present. See also Lower Flammable Limit. At concentrations higher than the UFL, the mixture is too rich to burn.
What are upper and lower flammability limits?
The upper flammability limit is defined as the concentration of the most concentrated mixture that is flammable and the lower flammability limit as the concentration of the most dilute fuel-air or fuel-diluent mixture that is flammable.
What is the flammable range of a substance?
Flammable range is defined as the percent of vapor in air necessary for combustion to occur and is referred to as the explosive limit. It is expressed on a scale from 0 to 100%. Explosive limits consist of an upper explosive limit (UEL) and a lower explosive limit (LEL).
What are the flammability limits of natural gas?
It is reported that the flammability region is from 5.0% to 15.6% of NG by volume at ambient conditions, for quiescent NG–air mixture with spark igniter, which is comparable with that of pure methane in air.
What does LEL gas mean?
Lower Explosive Limit
What is LEL UEL?
The minimum concentration of a particular combustible gas or vapor necessary to support its combustion in air is defined as the Lower Explosive Limit (LEL) for that gas. The maximum concentration of a gas or vapor that will burn in air is defined as the Upper Explosive Limit (UEL).
What is Lel in confined space?
An LEL Confined Space refers to Lower Explosive Limit within the confined space, which will be a percentage of combustible material in a gas or vapor state, that if mixed in the right proportion with air can create a hazardous fuel/air mixture that can be ignited and explode.
What level of H2S is dangerous?
100 ppm
What is the LEL of oxygen?
Normal Oxygen Level 21% in air. LEL and UEL will change as oxygen level changes. FLAMMABLE RANGE. Flammable Range of Selected Gases and Vapors. Flammable Vapor or Gas LEL UEL.
What is the full form of LEL?
The minimum concentration of a particular combustible gas or vapor necessary to support its combustion in air is defined as the Lower Explosive Limit (LEL) for that gas. Below this level, the mixture is too “lean” to burn.
What does Kek mean?
Kek is an online term with similar meanings to LOL or haha, used especially by gamers. Since the 2016 US presidential election, the Egyptian god Kek, portrayed as Pepe the Frog, has become a symbol of the so-called “alt-right.”
What is Lel in chat?
What does lel mean? Lel is a playful or ironic variation of the common internet acronym LOL or lol, for laugh out loud.
What is Lel LOL?
“Lel,” for example, is a form of “lol.” As the Urban Dictionary helpfully explains: Unlike what many people think lel is not an acronym in the same fashion that LOL is (it does not mean laughing extremely loud, laughing extra loud or similar). The word however, in essence, still means LOL.
What does Kek mean in GTA?
Kek has 2 meanings. WoW Orcish laugh. Korean laugh.
What is top Kek?
Top kek is a reaction, similar to the acronym LOL, only with a lot more layers around it. It is the ultimate height of being hilarious; it’s more powerful than saying “most funniest”.
Is Hmm rude?
‘Hmm’ is condescending. It is disrespectful. It is a waste of time. And it means you should not be having this conversation in the first place.
How do you respond to K?
Whether you spell it okay, OK, 10-4, or just K, it means the same thing: it means the person you just spoke to heard you and agrees. It’s a positive response. The great response to K is to say nothing and be happy that things are going okay. The word okay is a relatively modern one.
What should I reply instead of OK?
Synonyms & Antonyms of OK
- agreeable,
- all right,
- alright,
- copacetic.
- (also copasetic or copesetic),
- ducky,
- fine,
- good,
What should I reply after OK?
Informally, yes, you can reply “it’s okay/ok” to “thank you”. There is no difference between “okay” and “ok”, they are just variations in spelling.