| The Breakroom > The Water Cooler |
| Boiler Explosion |
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| DaveH:
Yawellnofine, Any moronic idiot can do that. This is why bad things happen to stupid people. :beer: DaveH |
| GWRdriver:
--- Quote from: NickG on July 27, 2011, 01:45:05 PM ---Surprised nobody posted this, . . . --- End quote --- For some reason unknown to me some folks think that posting such things, which has no relation to or is in no way indicative of what is strived for and what is going on the in the mainstream live steam community, helps the safety situation. Yes such things CAN happen, but they don't, for very good reason. After viewing such a video there are some folks who would never be convinced we are not ALL like that. The same goes for those who describe model boilers in terms such as bomb, missile, shrapnel, death, dismemberment, and other similarly extreme or even hysterical terms. The problem I have with that is, one never knows who might be listening or reading your post or letter, perhaps an official or administrator, an inspector, a legislator, or or a parent, who is now aware of a serious threat to the health and safety of the public and which now must be stamped out. Poof! Out go the fires. The amount of harm that can be done by these exaggerations far outweighs any potential benefits. |
| PTsideshow:
--- Quote from: crabsign69 on July 27, 2011, 12:57:32 PM ---i was gonna say everybody wrote something but nobody answered the question until gwr came on board . all round the darn thing with out a answer . wtg gwrdriver. thank you for a answer i like straight answers no b/s. --- End quote --- I can only answer what I know and had dealing with. As GWR said I have heard all the same stories he has and it is always the cousin of the uncle twice removed. I can even begin to verify any of the ones that have wiped out large numbers or injured the same. Since I don't do model loco boilers no point commenting on model locomotives. All I can say is you don't like my posts, Then don't read them! in the future. And I have to agree with what GWR has said about people using words and descriptions of problems that only apply to Hollywood. And the hammer is going to drop as GWR says a lot sooner than later. |
| DennisWA:
Regarding miniature boilers, I would also like to commend GWR Driver for a very clear answer. My own researches last year in the realm of live steam (up to 7 1/4" gauge ) agree with his findings - I searched in the model engineering press plus I asked fellow live steamers, all men of long experience and high standing in terms of their construction and running record. They were all aware of failures as GWR Driver described, typically described as "a loud click followed by some escaping steam", but as GWR Driver says there were no reported incidents of "catastrophic failure". On the subject of safety valves for miniature locomotive and traction engine boilers, the experts stress that (with the exception of the very smallest boilers) at least 2 safety valves be provided, designed to never allow the pressure in the boiler to exceed 110% of normal working pressure, no matter how hard the boiler is worked. A nomogram compiled by the late J.Greenly Steel is used to find the diameter of safety valve orifice for the combination of 1. a given working pressure and 2. the heating surface area of the boiler in question. As an example, a boiler working at 70psi with a 500 square inch heating surface needs 1 safety valve with an orifice of 0.35" diameter, or 2 safety valves, each with an orifice of 0.25" diameter. Nothing in the construction of those safety valves should reduce this area. A good example is the classic ball-type safety valve with an adjusting nut with holes in it for the steam to pass through - these holes are often too small. Like the vast majority of live steamers / model engineers, I am NOT a technical expert in this field. There are books by well-known designers and codes published by statutory bodies and national associations to provide guidance. Sticking to published and proven designs is always sensible. If in doubt certainly in the UK, RSA, Australia and New Zealand all clubs have boiler testers, who can provide good advice. I am happy to help DaveH should he wish to construct a boiler. Dennis |
| Ronkh:
Hi ya, Could someone/anyone please reply to my question regarding whether a model boiler-engine,etc, could blow regarding my previous question? I do not mean to come across as being arrogant or bossy but I feel it could be pertinant to beginners such as myself and other guys who wish to start in the steam world. Again, many kind regards, Ron. |
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