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Speedy23

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About Speedy23

  • Birthday 04/21/1956

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  • Gender
    Male
  • Location
    South Warwickshire

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  1. Oh dear - breathtaking complacency. No - this is not nonsense. When a propane or butane cylinder is exposed to fire, the contents will heat up and the internal pressure will rise rapidly. This will cause the pressure relief valve to operate and the gas that issues forth will promptly ignite, adding to the fun and heat. As the cylinder heats up, it weakens. It will very rapidly weaken to the point that when the internal pressure is high enough, the weakened cylinder wall WILL rupture explosively, the pressure relief valve simply being unable to vent sufficient gas to moderate the pressure inside the cylinder. When the cylider ruptures, the internal pressure falls to atmospheric and the superheated contents will flash into vapour and immediately ignite, creating a fireball that will incinerate anything unfortunate enough to be nearby. This is the classic BLEVE that other contributors have mentioned.This process is NOT unusual or difficult to provoke. If you put any gas cylinder into a bonfire that is hot enough, it WILL explode with considerable force. It is this explosion that projects the fragments of cylinder (i.e. red-hot shrapnel) at very high speed for 100s of metres, not the comparitively insignificant effect of the jet of gas escaping from the presure relief valve. If the base weld of the cylinder fails, the whole thing can act like a rocket and fly for considerable distances.This is quite sufficient to destroy a building. I have personally seen examples where an aerosol-size can of blowtorch fuel has exploded in this fashion - it was sufficient to lift and move the roof of the building where the explosion occurred. Just in case you're wondering, I have 30 years experience as a Fire Officer and was a specialist Hazmats Officer who dealt with many, many cylinder incidents over the course of my career. So the message is....these things ARE dangerous and they WILL explode if exposed to fire. Do not be complacent, because they WILL bite, and bite hard.
  2. .....Otherwise known as the "Royal Oilfield".....wonder why?
  3. ...Anybody use them? Reason is, we currently (pun intended!) have 4 x 135Ah Banner 95901 domestic batteries and where they are mounted - under the engine room floor - makes it a right PITA to get to them to check the electrolyte levels - you have to dismantle 1/2 of the engine room and take the floor up to get to them and that's before you've done the contortionist act to remove the inspection caps and add distilled water or electrolyte. They seem to have been needing topping up more frequently of late so this is becoming a concern So the theory is to replace them with sealed units, either gel cell or AGM types that will not require such frequent checking, such as the Varta LFD230 etc. Does this sound like a good idea? What are the pitfalls (there are bound to be some!)? Has anyone else done this? Thanks S23
  4. Have a look here .... Thankfully, the model that was created to show what Gas Street would look like in the early 1970s never came to fruition. Cheers S23.
  5. Hi all Just noticed a (hopefully) slight problem with our 2LW - it very occasionally "misses a beat" and there has been a reluctance to pick up revs from idle a couple of times. Could these two symptoms be connected and has anyone got any suggestions as to a likely cause? Your input gratefully received Regards S23
  6. Could anyone suggest a stockist for the filter & gasket? Thanks S23
  7. Thanks for prompt reply... I will have a look around the web.... Cheers Jan
  8. ...Anybody know the part number for this item and a supplier? I was just checking over the engine yesterday and noticed that the sealing ring/gasket was broken and hanging out of the filter body/end cap joint. Probably overtightened when the filter element was last replaced. What size is the gasket - can they be obtained on their own? Cheers S23
  9. Thanks Mike, will check this out. Cheers S23
  10. Sealed system with radiator cap on header tank......
  11. Hi all, thanks for your replies We're going to take the floor up in the engine room to try to see where the coolant's going.....the boat has a skin tank and calorifier.
  12. Hi all, season's greetings..... Here's a problem that's got me racking my brain (doesn't take a lot, though...) When the engine has been standing for a few days, the coolant level in the header tank drops and needs about 1/2 litre to top it up. When the engine is run daily, there is no loss of coolant apparent. I'm thinking that - especially in this cold weather - there is a faulty joint somewhere in the cooling system which opens up when it cools down to ambient temperature, allowing the coolant to leak out. Does this sound feasible? Or is there something obvious that I am overlooking? Your obs & suggestions very welcome. S23
  13. Wonder how Doodle got on with his?
  14. Like 'em or loathe 'em, Dysons are eminently rebuildable..... Have a look at this web site....basically a sort of CWDF for the "vacuuming" community......and you thought it coudn't get much better than here.....
  15. FWIW, The Froggery now lies beneath New Street Station - demolished in 1852. S23
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