I work for a natural gas utility and we have designed a building that has 3 seperate "rooms". One of the rooms is classified as a Class1Div2 and the other two are unclassified. The wall between the classified and unclassified rooms are constructed of 2 layers of 6mil vapor barrier,1/2"FPR over 2 layers Fire rated, staggered, 5/8" drywall with fiber mesh tape and non sanded mud.
Conduit containg 24volt dc circuits will be piercing the wall between the classified and unclassified area. I realize seals are required, but I am unable to find any articles relating to what is required when piercing the wall. Are seals all that is required? My concern is that natural gas could communicate from the classified to the unclassified area through the pierced area around the conduit.
Thank You
Conduit containg 24volt dc circuits will be piercing the wall between the classified and unclassified area. I realize seals are required, but I am unable to find any articles relating to what is required when piercing the wall. Are seals all that is required? My concern is that natural gas could communicate from the classified to the unclassified area through the pierced area around the conduit.
Thank You