Compex Flashcards
(52 cards)
Ex d
Flameproof, 1/2
Ex e
Increased safety, 1,2
Ex n
Non incendive, 2
Ex i
Intrinsic safety, 0,1,2
Ex p
Pressurisation, 1,2
What zones does 0,1 & 2 equate to
1G
What zones does 1 & 2 equate to
2g
What zones does 2 equate to
3G
What is the difference between international standards and British standards?
Nothing, they are the same
What does x mean after certificate number?
Special conditions of use
What gas group is Ethelyne in?
IIB the middle dangerous one
What gas group is propane in?
IIA the least dangerous one
What gas group does hydrogen and acetylene belong to
IIC the most dangerous one
When did atex 153 become fully compliant?
0/07/2006. They were made in 2003 but got 3 years to get sorted for them
What does atex 153 have to do with
The health and safety side of explosive atmospheres. Training, stuff like that
What aspect does atex 114 have to do with
That is product directive, brought in to try and improve the trade between the EU so that everything was to the same standard
Why could the EPL be changed after the risk assessment
due to the potential consequences of a hazard. If in a built up city then the consequences are higher then I if it’s in middle of nowhere
What is symbol for ambient temperature?
TA will be on the equipment. This will mean that it is safe to use in temperature -20 to + 40 degrees
What equipment can go in a IIA gas area
IIA only
If the equipment certification number ends with a U what does this mean?
It means it is an ex component, like a stopper or a gland and cannot provide protection by itself but is an additional thing
What does it mean if the equipment certification has a x at the end
It means it has special conditions of use. Eg terminal blocks, earthing requirements, voltage, gaskets
What is IEC 60079-10 about?
Area classification
What is IEC 60079-14 about?
Installation
What is IEC 60079-17 about?
Inspection
