Armory Sponsor
Posted: 10/29/2016 6:52:18 PM EDT
|
I am building a wooden box to store my primers in (as per the fire code). I am making it *not* air tight with a loose-fitting hinged door and a small gap at the top and bottom of the door.
I have heard people talk about adding vent holes. Any feedback on this? How big and how many? The inner dimensions on my box are 11x11x13", so about 1 sq foot or so. A Google search turned up an archived thread on here about primer/powder boxes, and a reference to some boxes that Dryflash3 made, but the search function on this can be finnicky, and I could not find the Dryflash3 thread. Here is the other thread I found: http://www.ar15.com/forums/t_6_42/405654_Primer___Powder_storage_boxes___where_.html |
|
Quoted:
Personally, I store my primers in Walmart plastic bins. With good stacking one of the $5 ones can hold 30k primers... Not air tight, but with some gorilla tape they tuck away nicely. Thanks for your reply... The fire code in Indiana says I cannot store more than 10K primers in one room, and that another set of 10K primers must be in another room and at least 15 feet away from the first set. The fire code also specifies wooden boxes of 1" thick wood. I also think you do not want them to be air tight, otherwise, they become bombs, and you want them to vent instead. Same principle as gun powder: alone it burns and goes "whoooosh", but sealed in cartridge, it goes "BANG" due the pressure buildup from the gas release (which is what gun powder does when it burns). |
|
Quoted:
Thanks for your reply... The fire code in Indiana says I cannot store more than 10K primers in one room, and that another set of 10K primers must be in another room and at least 15 feet away from the first set. The fire code also specifies wooden boxes of 1" thick wood. I also think you do not want them to be air tight, otherwise, they become bombs, and you want them to vent instead. Same principle as gun powder: alone it burns and goes "whoooosh", but sealed in cartridge, it goes "BANG" due the pressure buildup from the gas release (which is what gun powder does when it burns). Quoted:
Quoted:
Personally, I store my primers in Walmart plastic bins. With good stacking one of the $5 ones can hold 30k primers... Not air tight, but with some gorilla tape they tuck away nicely. Thanks for your reply... The fire code in Indiana says I cannot store more than 10K primers in one room, and that another set of 10K primers must be in another room and at least 15 feet away from the first set. The fire code also specifies wooden boxes of 1" thick wood. I also think you do not want them to be air tight, otherwise, they become bombs, and you want them to vent instead. Same principle as gun powder: alone it burns and goes "whoooosh", but sealed in cartridge, it goes "BANG" due the pressure buildup from the gas release (which is what gun powder does when it burns). Primer boxes should be air tight. Primers don't burn, they detonate. The wood box is to prevent the heat from a house fire getting to the primers and setting them off. A vent hole will let the heat in. You do want to have a loose top on them. |
|
For those not up to speed on primer magazines, http://www.saami.org/specifications_and_information/publications/download/SAAMI_ITEM_201-Primers.pdf What it says if you read it, wooden box constructed with 1 inch thick wood with a "weak" side. Weak side to vent if necessary.  What mine looks like. The boards that make up the bottom, sides and top are glued up. I used finish nails and no glue to hold it together. (finish nail has no head, so weak joints) A strong joint would be glued and screwed, and not what you want here..  Powder mags are constructed the same. Look close and notice box is made up up 3/4 inch boards, then lined with 1/4 inch boards to get to 1 inch thick. So no need to mill 1 inch thick lumber like I was doing. Here is the link for powder storage, http://www.saami.org/specifications_and_information/publications/download/SAAMI_ITEM_200-Smokeless_Powder.pdf Local codes can be more stringent than SAMMI. DO Not drill vents, or leave gaps in your box. The 1 inch thick construction is to insulate the contents from the heat of a fire so don't defeat this feature. |
|
Unlike smokeless powder (a flammable solid) primers ARE small cups full of relatively higher order explosives.
All sorts of things are used in them besides the typical lead styphnate initiator. Lead Styphnate is a very sensitive explosive so even adding TNT and similar compounds makes the mixture work better. Using the bare minimum of the sensitive component is a desirable goal. |
|
From what I'm reading the powder storage limit of 20 lbs without a magazine is only limited in R-3 residences? I would imagine most here live in R-1?
Does that apply to primers as well? Edit: after a little more reading the 10k limit on primers seems to be in all residences 
What the heck? I guess I'll have to store some at my parents house or something 
10k limit is laughable especially if you load multiple Calibers I do have an outbuilding but it's not heated or cooled and pretty humid I don't think it would be wise to store them there Edit: R-3 is what most of us have I read it wrong R-3 is single or 2 family dwelling |
| I never heard about this NFPA stuff before this thread. Looking at the site and without reading the whole thing, I'm curious. Is this law or just safety regulations recommended by this organization?...or a template used by some other organizations as law or regulatory control where required? |
|
Quoted:
I never heard about this NFPA stuff before this thread. Looking at the site and without reading the whole thing, I'm curious. Is this law or just safety regulations recommended by this organization?...or a template used by some other organizations as law or regulatory control where required? Looks like most states adopt it for as written for fire code Insurance might deny your claim if your house burned |
|
Quoted:
Apparently so Also 25k limit for transporting in a vehicle... But 50k comes in one shipment Quoted:
Quoted:
10k limit, but you can order 50k on one hazmat ticket? Apparently so Also 25k limit for transporting in a vehicle... But 50k comes in one shipment Commercial shipments are under a different set of rules, but I can't remember the limit for that. |
|
Quoted:
Looks like most states adopt it for as written for fire code Insurance might deny your claim if your house burned Quoted:
Quoted:
I never heard about this NFPA stuff before this thread. Looking at the site and without reading the whole thing, I'm curious. Is this law or just safety regulations recommended by this organization?...or a template used by some other organizations as law or regulatory control where required? Looks like most states adopt it for as written for fire code Insurance might deny your claim if your house burned Yep, Indiana adopted the NFPA standards: 3306.1 General. Indoor storage and display of black powder, smokeless propellants and small arms ammunition shall com- ply with this section and NFPA 495. 3301.1.1 Explosive material standard. In addition to the requirements of this chapter, NFPA 495 shall govern the manufacture, transportation, storage, sale, handling and use of explosive materials. |
|
Quoted:
Apparently so Also 25k limit for transporting in a vehicle... But 50k comes in one shipment Quoted:
Quoted:
10k limit, but you can order 50k on one hazmat ticket? Apparently so Also 25k limit for transporting in a vehicle... But 50k comes in one shipment Yeah, I've wonder that too... they'll even let you pick it up at the UPS hub hehe. |
Armory Sponsor