Re: 3801 - IT'S BLACK ..... WHY????

["Trevor Edmonds" <tedmonds@tmx.com.au>]

My understanding is that the tube plates were designed to the then current
boiler code, which necessitated a recalculation of the boiler pressure, and
that this was a pragmatic decision at the time, rather than a 'clever dick'
stuff up. I will have a chat to our esteemed boiler inspectors at Eveleigh
on the weekend and get the story straight!

Trevor

Bill McNiven wrote in message ...
>I think I sense an urban railway myth here.
>
>Certainly, 3801's 1986 overhaul involved a new welded inner firebox, as
>nobody was going to roll plates to the original design.
>
>There were endless discussions in 1983/86 as to how the refurbished 3801
>would be managed, with senior SRA staff playing a key part.  As I recall
it,
>the 220psi boiler pressure was a bright idea from the then SRA Mechanical
>Branch to prolong the boiler life, not a design limitation.  3642 ran with
>reduced pressure for the same "reason".
>
>Regards,
>
>Bill
>
>PS:  The loco looks terrific in the colours it carried for at least half of
>its regular service life (i.e. 1943 - 1962).  Keep it like that!
>
>Dave Malcolm wrote in message ...
>>In article <7q0qlk$miu$1@news.tmx.com.au> "Trevor Edmonds"
><tedmonds@tmx.com.au> writes:
>>>From: "Trevor Edmonds" <tedmonds@tmx.com.au>
>>>Subject: Re: 3801 - IT'S BLACK ..... WHY????
>>>Date: Wed, 25 Aug 1999 23:15:24 +1000
>>
>>>Rob Kearey wrote in message...
>>
>>>>Does 3801 still have the downrated boiler?
>>
>>
>>>Yes, it was restored (12 years ago) according to the current boiler code.
>>>3830 was done to the original boiler code, which gave it the full 245psi.
>>
>>>Trevor
>>
>>Wasn't that only because some clever dick decided it would be better to
>>use a thicker inner fire box than it was built with, which is a major
>>modification and there for requires the modification to come under the new
>>boiler code rather than the one it was built and opperated under for 30
>years.
>>
>>Dave Malcolm
>>
>
>