I went through and inspected my mortars and found 6 or so that have a small piece of the bottom part of the plug missing (see pic below). It still appears to be sealed against the tube with the exception of the small portion at the bottom. The plug is not loose in any way. Also, just curious, are there any safety concerns with plugs not being flush with the bottom of the hdpe? I'm guessing no, it just causes the tubes to not sit completely level (the plug is not completely level). Any info provided would be helpful! Thanks.
I believe the NFPA standard for plug thickness on consumer mortars is 3/4" inch. Someone please correct me if I'm wrong. If I'm correct then those plugs are doubled in thickness so if there is small portion of the plug missing it won't hurt a thing.
You could remove the staples in those mortars and you won't be able to move those plugs with your bare hands. They are pressed in with a machine. You'll need some serious power to move those plugs.
Make sure your mortars are placed on a solid surface, in a rack and you won't have any trouble. The mortar plugs should be flush with the tube or very close to flush. It's not an issue if they are not 100% flush... however, anything above a 1/8" I'd address, but I know that's not the case based on your picture.
PyrogearSteve
April 9th, 2009, 08:32 AM
I believe the NFPA standard for plug thickness on consumer mortars is 3/4" inch. Someone please correct me if I'm wrong.
AFAIK, NFPA only applies to commercial fireworks. There are no NFPA standards for consumer tubes.
Georgie-Tiger
April 9th, 2009, 09:36 AM
AFAIK, NFPA only applies to commercial fireworks. There are no NFPA standards for consumer tubes.
I dont see ANY specification for plugs in NFPA 1123. Only dimensions of tubes.
PyrogearSteve
April 9th, 2009, 12:06 PM
I dont see ANY specification for plugs in NFPA 1123. Only dimensions of tubes.
Yes, unfortunately NFPA leaves much to be desired.