Contents
- 1 How does a flame arrester work?
- 2 When should a flame arrestor be installed?
- 3 What is the purpose of a flame proving device?
- 4 Where are flame arrestors used?
- 5 What is a Marine flame arrestor?
- 6 What is a flame arrestor on a boat?
- 7 What are the 4 types of gas furnace airflow patterns?
- 8 How are flame arresters tested for detonation?
- 9 What is the safe gap for flame arresters?
- 10 What are the guidelines for a detonation test?
How does a flame arrester work?
A flame arrester functions by absorbing the heat from a flame front traveling at subsonic velocities, thus dropping the burning gas/air mixture below its auto-ignition temperature; consequently, the flame cannot survive. The heat is absorbed through channels (passages) designed into an element.
When should a flame arrestor be installed?
A flame arrester may be installed to keep an external flame out of a tank or vessel or to ensure that a flame burning within a pipeline does not propagate to other equipment.
What is the difference between a flame arrestor and a detonation arrestor?
In short, the deflagration Flame Arrester is designed to stop the initial phase of the explosion and is shorter and lighter than the unstable detonation arrestor, but the Deflagration Flame Arrester has restrictions on its placement within the pipework regarding distance from the source of ignition.
What is the purpose of a flame proving device?
When the fuel / air mixture reaches the ignition source, flame will become established. One of the very important safety features of modern gas burner ignition systems is known as “Flame Proving”. This is a method whereby the ignition controller is able to recognize that the burner flame has been safely established.
Where are flame arrestors used?
Flame arrestor technology is widely used across the process industries: … including refining, pharmaceutical, chemical, petrochemical, pulp and paper, oil exploration and production, sewage treatment, landfills, mining, power generation, and bulk liquids transportation.
Is a flame arrestor a valve?
The Valve reduces emissions and product loss, while the flame arrester protects the tank from flames in the atmosphere during venting of flammable gases.
What is a Marine flame arrestor?
$149.99 USD. The K&N Flame Arrestor makes the best air-filtration technology available for marine engine use. Marine application owners can experience the increased horsepower and engine protection provided by K&N’s oiled cotton gauze and epoxied screen filter element.
What is a flame arrestor on a boat?
Because boat engines may backfire, all powerboats (except outboards) that are fueled with gasoline must have an approved backfire flame arrestor on each carburetor. Backfire flame arrestors are designed to prevent the ignition of gasoline vapors in case the engine backfires.
What is deflagration flame?
Deflagration – A flame front propagating through a flammable gas or vapor at a velocity less than the speed of sound in that gas or vapor. Detonation – (Also “Stable Detonation”) A flame front propagating through a flammable gas or vapor at a velocity equal to the speed of sound in that gas or vapor.
What are the 4 types of gas furnace airflow patterns?
90 Cards in this Set
| The four types of gas furnace air flow patterns are_________, ________, _________ and___________ | up flow, down flow, low boy and horizontal |
|---|---|
| Two gas valve physically in series but wired in parallel are A : Series valves B : Redundant valves C : Parallel valves D : None of the above | B : Redundant valve |
How are flame arresters tested for detonation?
Detonation flame arresters protecting such systems must be tested with appropriate media (the same vapor or a media having a MESG no greater than the vapor). Various gases and their respective MESG are listed in attachment 1.
What should be included in a flame arrester order?
Ordering Information 6.1 Orders for detonation flame arresters under this specification shall include the following information as applicable: 6.1.1 Type (I or II). 6.1.2 Nominal pipe size. 6 1.3 Each gas or vapor in the system and the corresponding MESG. 6.1.4 Inspection and tests other than specified by this standard.
What is the safe gap for flame arresters?
For all tests, the test media defined in 14.1.1 can be used except where detonation flame arresters protect systems handling vapors with a maximum experimental safe gap (MESG) below 0.9 millimeters.
What are the guidelines for a detonation test?
9.2.2 A corrosion test shall be conducted. In this test, a complete detonation flame arrester, including a section of pipe similar to that to which it will be fitted, shall be exposed to a 20% sodium chloride solution spray at a temperature of 25 °C for a period of 240 hours, and allowed to dry for 48 hours.