Pressure testing for buffer tanks

The cut-point that I use at work is 250 bar-litres. We dont register pressure vessels below this level. That may, or may not help this discussion.

Is it possible to get a design/prototype registered, and then multiple copies made and sold without further testing? If so, we have a potential manufacturer in Mario, and a potential salesman in Paul. There is probably a demand for 20+ high pressure buffer tanks.

Of course it needs to weigh significantly less than a CO2 bottle. A single size might be slightly restrictive, but no more so than the myriad RW rules to which we all conform already.

Jeremy

Im confident that my stuff is safe to use, if the users abide the restictions I put upon the stuff. Like always with the 1000psi Relief valve.And only in the robot(except testing,as a free mounted system).
No use after the tanks are damaged in the wars, so no dents or nicks.
Rams have a bigger safetyfactor, and small repairs are possible.If done by a competent person(and preferably me)

The parts are tested at 135 bar, about double the useable pressure in RW.

I know, normaly all the laws must be abided, but as the law gives us the escape route of the prototype please dont dish this in advance.

Testing for salepurposes in Belgiun is very expensive and very restricted. NO welded tanks for use above 30 bar.Bolted tanks are only acceptable for steam purpose.Not gasstorage.
If tanks are tested, 2 prototypes are nessecary, 1 for destruction testing, this series of tests costs 750‚ for a small tank. The other tank is for rntgen and long term test purproses, and this series of tests costs 500‚.
And even then it isnt garantied to pass the PED CE tests.
Is robot wars not expensive enough?

Emm, now you know why people use low pressure stuff.
:)

Paul, shouldnt have said full effect, you are right below the Bar-L limit only S.E.P. applies which is outside of PED. Sorry! Thatll teach me for typing while watching TV!

Ill see you at worthing... with coffee and a laptop... :sad:

I have just constructed a 0.9litre aluminium
buffer tank,from a fire extinguisher , it will be teseted locally just as a fire extinguisher would be tested,same type of test, water type ,it
will then be stamped,

I agree with Tony ......use an in test bottle.

Theres a plethora of sizes / capacities to chose from.

Alan, It all depends on any mods made that may affect the integrity and thus original certification / BS. Buffers are just part of it, its the home made valve assemblies + rams that are also of interest.

Eddy, I know what you are getting for Xmas - its all sorted. (If I knew how to do them smilie face things, I would have done one there)

Paul, Dont know all of them but :) is : + ) together and :proud: is : + O

oh dear, dont tell paul that .. hell think christmas has come early !!!

Oh btw question for paul.....

i would imagine there will be a high majority of people opening up their xmas pressies and finding robot bits....

what does mrs cooper by the man who has every robot bit he wants on the shelf???

jonno

A milling machine and I have already opened it early :)