What is meant by runaway reaction?
An exothermic reaction can lead to thermal runaway, which begins when the heat produced by the reaction exceeds the heat removed. The surplus heat raises the temperature of the reaction mass, which causes the rate of reaction to increase. This in turn accelerates the rate of heat production.
What is a catastrophic expression?
Catastrophic backtracking is a condition that can occur if you’re checking a (usually long) string against a complex regular expression. The problem usually occurs if something towards the end of the string causes the string to not match.
What causes thermal runaway?
Thermal runaway begins when the heat generated within a battery exceeds the amount of heat that is dissipated to its surroundings. If the cause of excessive heat creation is not remedied, the condition will worsen.
What is runaway nuclear fusion?
Runaway thermonuclear reactions can occur in stars when nuclear fusion is ignited in conditions under which the gravitational pressure exerted by overlying layers of the star greatly exceeds thermal pressure, a situation that makes possible rapid increases in temperature through gravitational compression.
How do you stop a runaway reaction?
A runaway reaction, if caught early, can sometimes be halted by adding chemicals to cancel the effect of the catalyst. Common measures include neutralization, quenching with water or other diluent, or dumping the contents into another vessel which contains a quench liquid.
What is runaway polymerization?
A runaway polymerization is a potentially dangerous reaction in which chemical products form with excessive speed, producing heat that may lead to an explosion or other hazards.
Does catastrophic mean death?
An injury that is considered catastrophic is typically more severe than other types of personal injuries. While many types of trauma will heal and allow for a complete recovery, when catastrophic, the result is often significant disfigurement, permanent disabilities, or death.
What is catastrophe and example?
The definition of a catastrophe is a large, often sudden, disaster or ending. The Japan Earthquake of 2011 is an example of a catastrophe. The story of Romeo and Juliet is an example of a catastrophe.
How do you stop thermal runaway?
One of the simplest ways to prevent thermal runaway is to store batteries at safe temperatures. The ideal storage temperature for most lithium-ion batteries is between 40-70 degrees Fahrenheit (5-20 degrees Celsius).
Is Cold Fusion theoretically possible?
There is currently no accepted theoretical model that would allow cold fusion to occur.
Why fusion is not possible?
Normally, fusion is not possible because the strongly repulsive electrostatic forces between the positively charged nuclei prevent them from getting close enough together to collide and for fusion to occur.
Is exothermic reaction Bad?
Exothermic reactions are more dangerous than endothermic reactions as they have the potential of creating temperature runaway situations.
What is thermal hazard?
Thermal hazard means an article which, in normal use or when subjected to reasonably foreseeable damage or abuse, because of its design or manufacture presents an unreasonable risk of personal injury or illness because of heat as from heated parts, substances or surfaces.
What is violent polymerization?
A hazardous polymerization is a chemical reaction that produces a very high and dangerous amount of heat due to how rapidly the reaction takes place. Polymerization is a chemical reaction where one or more small molecules combine together to form a larger molecule.
What is styrene used for?
Styrene is a chemical used to make latex, synthetic rubber, and polystyrene resins. These resins are used to make plastic packaging, disposable cups and containers, insulation, and other products. Styrene is also produced naturally in some plants. People may be exposed to styrene by breathing it in the air.
What is another word for catastrophic?
In this page you can discover 15 synonyms, antonyms, idiomatic expressions, and related words for catastrophic, like: destructive, fatal, disastrous, cataclysmic, crippling, disaster, catastrophe, devastating, devestating, fateful and calamitous.
What is catastrophe leave?
The Catastrophic (CAT) Leave program allows employees who have exhausted their leave credits and must miss work due to a prolonged illness or injury (including that of an eligible family member), or due to a natural disaster, to request CAT leave.
Does catastrophe mean disaster?
A catastrophe is a disaster. If a wedding reception is disrupted by a fistfight between the bride and her new mother-in-law, you could call the occasion a catastrophe. Catastrophe comes from a Greek word meaning “overturn.” It originally referred to the disastrous finish of a drama, usually a tragedy.
What temperature do batteries explode?
Never store batteries at temperatures higher than 170°F (76°C) as this can potentially result in self-combustion.
What voltage does thermal runaway start?
current with varying voltage/temperature Each box started at 27 volts as a float voltage. The results showed that thermal runaway would not happen at 27 volts in any of the batteries regardless of the temperature.