No. 9 Boiler Jacket

[Dave Crow]

Folks,

I'd like to find a copy of the NRHS report as well as links to here on the Forum or in the newsletters concerning the chemical treatment of No. 9's boiler jacket.

Thanks in advance,
Dave Crow

[Benjamin Richards]

There is a link in the following forum thread, but it is dead due to website updates 

https://forum.wwfry.org/index.php/topic,2669.0.html

[John Kokas]

I wish we could have a Russian Iron boiler jacket for #10 and #11.  It just looks so sharp on our equipment.

[Ed Lecuyer]

I have created a replacement page on the new website to host the NRHS report on the development of #9's jacket.

It can be found at:
https://wwfry.org/special-projects/

@John - I think the plan is to have some sort of planished iron style jacket on 10 and WW&F 11.

[John Kokas]

So happy to hear that.  After rereading the NRHS report, it gave me pause as I put my Engineering hat on, that magnetite is a waste product of gold mining and if available in power form, is there somewhere where one can develop an electro-chemical process to deposit magnetite directly into the surface of low carbon steel sheet?   Might be an alternative to examine for follow on orders.  BTW, did we clearcoat #9 sheets after forming and before assembly on the locomotive as a preservative measure?  I know, a lot to chew here................

[Dave Crow]

Ed, thank you for posting the NRHS report for all to read.

Dave Crow

[Benjamin Richards]

BTW, did we clearcoat #9 sheets after forming and before assembly on the locomotive as a preservative measure?  I know, a lot to chew here................

No. The whole point of the exercise is that planished iron/Russian iron is naturally corrosion-resistant. The finish held up well for a long time, nearly 10 years, far longer than any coating would in this environment. Something happened last year which caused significant corrosion near the stack. Steam crew could comment further on the cause of this incident.

[Dante Lakin]

The smokejacks in the engine house caused it

In reality though, the working theory is that acid(s) are formed by the mix of soot and steam, which is now rained onto the jacket during fire up. Those acids react with the black oxide coating and turn it into red oxide (rust).

[John Kokas]

Is it possible to replace only the sheet affected by the smokestack drips or can it removed and the process reversed?  Would clear coating help protect the jacket surfaces?