Talk:1998 Esso Longford fire
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New article
Added this new article which was mentioned on the Australian Wikipedians' notice board. If any engineers are reading this and would like to proof read and fact check the technical section about the cause of the accident, please do! -- Canley 05:22, 19 October 2005 (UTC)
- Dude, thats an awesome article, I've added a link to the Coroner's report into the explosion which is still online, but I havn't actually read the report. Agnte 09:26, 19 October 2005 (UTC)
Canley, Any particular technicalities you think need checking? Anything you're not sure of? I can help. opal2.
- Mostly the part about how the heat exchanger operates, I was quite vague as I really didn't understand it. --Canley 23:20, 3 January 2006 (UTC)
Description of the heat exchanger
GP905 was a shell and tube heat exchanger. This is a simple vessel with no moving parts - a horizontal cylindrical vessel, about 10 metres long and 1 metre in diameter.
A diagram of a typical shell and tube heat exchanger can be found in this Wikipedia article "Heat exhanger":
http://en.wikipedia.org/wiki/Heat_exchanger
The purpose of a heat exchanger is to transfer heat from a hot fluid to a cold fluid, without the two fluids mixing.
With GP905, the hot fluid was Rich Oil and the cold fluid was Lean Oil.
During normal operations, the Lean Oil entered the exchanger at 230C, and exited at 120C. The Rich Oil entered at 60C and exited at 100C. Thereby, heat was transferred from the hot Lean Oil to the cold Rich Oil.
The steel cylinder is called the "shell". Inside the shell is a bundle of about 100 steel tubes, running the length of the shell. Hence, it is called a "shell and tube" heat exchanger.
The hot Lean Oil flowed through the shell, passing over the tubes. The cold Rich Oil flowed throught the tubes. Heat was transferred from the hot Lean Oil, through the tubes, to the cold Rich Oil. The internal structure of the exchanger ensured that the the two fluids did not mix.
The shell was closed at each end by a circular plate bolted to a flange.
The heat exchanger was covered with insulation, apart from the pipe connections.
opal2
(I'm not used to Wikipedia - I'm fumblibg a bit with the mechanics of editing.)
Gas Plant One is mainly a natural gas plant
LPG is a side product. Gas Plant One was, and is, a producer of natural gas. In 1998, Longford was essentially the only supplier of natural gas to the state of Victoria.
Although Americans use the term "gas" for what we call "petrol", both countries have a common understanding of "natural gas". Using the term "natural gas" avoids any confusion.
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Explosion or not
The title and lead paragraph for this article refers to an explosion. But the section about the incident states that there was no explosion, it was a vapour cloud deflagration and jet fire. This apparent contradiction should be resolved (by someone who has more info on the actual event).--Pakaraki (talk) 02:19, 15 May 2021 (UTC)