Blogs about: Intrinsic Safety
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Intrinsic safety in hydrogen/oxygen mixtures
Background Occasionally it is necessary to make measurements in hydrogen/oxygen mixtures. The increased use of fuel cells and the use of hydrogen as a vehicle fuel have increased the frequency with wh… more →
AN-Ex
Intrinsic safety in hydrogen/oxygen mixtures
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mtlinst wrote 1 year ago: Background Occasionally it is necessary to make measurements in hydrogen/oxygen mixtures. The increa … more →
Cable parameters and all that
mtlinst wrote 1 year ago: The intrinsically safe [IS] system standard [IEC60079-25] discusses in detail how to draw up the sys … more →
Thoughts on the design of intrinsically safe junction boxes
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mtlinst wrote 1 year ago: Junction boxes are ‘simple apparatus’ when used in intrinsically safe circuits, and given a little t … more →
Field wiring- Segregation of IS cables and other cables
mtlinst wrote 1 year ago: Recently there has been concern expressed about the possibility of inducing unacceptable levels of e … more →
Intrinsically safe multicores
mtlinst wrote 1 year ago: It is an opportune time to review the use of multicores containing more than one IS circuit because … more →
The use of mechanical tools in hazardous areas
mtlinst wrote 1 year ago: Purpose of note From time to time concern is expressed about the possible risk of frictional sparkin … more →
The future role of the humble paper clip in Hazardous Areas
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mtlinst wrote 1 year ago: Apart from their traditional use of holding the multiple sheets of paper that one is required to hav … more →
Earthing –bonding and all that
mtlinst wrote 2 years ago: The perennial problem of earthing and bonding is raised from time to time. The basic principles that … more →
A non-progress report
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mtlinst wrote 2 years ago: My apologies for the long interval between entries on this blog, but my contemplating time has been … more →
ATEX instructions- a paper chase
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mtlinst wrote 2 years ago: There exists an ATEX working group/ standing committee, which promulgates interpretations of the ATE … more →
The Three Day Expert
mtlinst wrote 2 years ago: It is generally acknowledged that there is a lack of expertise in defining and installing electrical … more →
Ex d – a non solution to a hot problem
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mtlinst wrote 3 years ago: Background Very occasionally someone notices that the IEC apparatus standards usually only consider … more →
A postcard from Rio de Janeiro
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mtlinst wrote 3 years ago: Apologies for the lack of recent additions to this blog, but an IEC meeting in Rio temporarily stemm … more →
Hieroglyphics didn't come to an end after Ancient Egypt
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mtlinst wrote 3 years ago: The marking requirements for electrical equipment for use in hazardous atmospheres has become ludicr … more →
Equipment Protection Levels and all that
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mtlinst wrote 3 years ago: One of the evil side effects of the ATEX Directive is that the IEC feels compelled to follow its mor … more →
AN9003 Revisted
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mtlinst wrote 3 years ago: Back in the days before the Internet, Chris’ main vehicles for publishing his views on what wa … more →
