Originally posted by DeputyMarshal
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The ONLY arguement I see for wanting an OEM cylinder is if there is a concern on the physical dimesions of the tank. IE - can it fit into the scba harness.
The Valve - is OEM. It is designed to mate with a cylinder made to a specific exemption standard (DOT paperwork).
The cylinder itself, irregardless of who makes it, must conform to the standard defined in the exemption paperwork. This governs things such as testing pressure, working pressure, hydro test procedures, threading and valve attachment, thread inspection and valve torque specs. There is lots more governing the working temperature, inspection procedures, defect tolerances etc but you get the jist of it.
Also - as a standard matter of maintence, valves are removed, inspected, serviced and replaced. This work is usually done by a Hydro shop so unless you explicitly ship everything back to the SCBA manufacturer - your arguements regarding this aspect are moot as well.
I am sorry - there a LOT of other industries using high pressure gas cylinders that don't have this requirement. Many understand that the key component to a high pressure gas cylinder is: A - the working pressure, B - the proper valve assembly and C - the physical dimensions. Manufacturer or reseller is not a criterea.
Many seem to take the NIOSH tested configuration to be absolute gospel and never to be altered without any common sense. As I said - you do realize that SCI is manufacture of almost all composite tanks in the US. You do realize who foolish it sounds to say only the SCI tanks who are branded and sold by XXX are safe to use. Its like saying the only light bulbs you can use in your Ford vehicle are the ones sold by Ford dealerships. If you want to stick to tanks - do you think hospitals only get tanks from the OEM for some of thier equipment or do you think they understand an AL 'D' tank is interchangeable irregardless of who you bought it from. Oh wait - most of those tanks are handled by gas suppliers who mix Luxfer and Catalina O2 tanks and don't worry about the stickers that may have been put on a tank for its 'certification' for use with a peice of equipment.
To those who don't see this - I pose this one more question. What battery do you use in your PASS device? Do you ensure that you use only the battery spec'd by the manufacture or do you use the commonly available 9V you can get readily? The NIOSH paperwork and SCBA paperwork (at least for MSA) requires the use of Duracell Procell batteries. If you don't use those, aren't you also in violation of the NIOSH rating???
You are right in one thing - as many people interpret the NIOSH test standards, using a tank outside the OEM stickered ones can make it a 'Non NIOSH' tested device. For many departments, mine included, the excess cost for meeting this is not worth it. An SCI tank is half the price of the MSA tank. For 20 tanks, that is 10,000. While some departments may not see that as a major cost, for many it is.
This is even further reinforced when you read the condition that says its OK to use a non-OEM tank under 'emergency' conditions. If its safe to do then, why is it not safe to do all of the time. I mean this is the case where we KNOW the user will enter an IDLH atmosphere right. This is the worst case scenario for its use and its safe enough then.
I don't fear this in a court of law. I believe you would have a VERY big uphill battle stating the brand of cylinder used in an SCBA was a causal factor. I don't believe the Jury would neccessarly agree with the SCBA manufacturers that the cylinder being SCI rather than MSA (and SCI) would in fact invalidate the NIOSH test - provided the the cylinder was made to spec. Again, we are talking cylinder only not cylinder and valve.
You are free to disagree and I don't personally care. I would expect to see this 'standard' adjusted in the next year or three as SCI is now selling tanks on the open market. Since they are the manufacturer, they have a lot of leverage with this. Honestly, if they wanted to be devious, they could move the MSA markings from the hydro label and it then it would be 'as tested' by MSA.
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