Boiler Pressure Change on Class J's

[NW Mailing List]

Thanks for the info!

Dave Stephenson

--- On Sun, 1/2/11, NW Mailing List <nw-mailing-list at nwhs.org> wrote:


> From: NW Mailing List <nw-mailing-list at nwhs.org>

> Subject: Re: Boiler Pressure Change on Class J's

> To: "NW Mailing List" <nw-mailing-list at nwhs.org>

> Date: Sunday, January 2, 2011, 4:32 PM

> Dave,

> 

> The date for the change in the Classification Books was

> October 4, 1945. That is good enough for me.

> 

> Bud Jeffries

> 

> ----- Original Message ----- From: "NW Mailing List" <nw-mailing-list at nwhs.org>

> To: "NW Mailing List" <nw-mailing-list at nwhs.org>

> Sent: Sunday, January 02, 2011 11:54 AM

> Subject: Boiler Pressure Change on Class J's

> 

> 

> > Is there a record of when the BP of Class J's 600-610

> was raised from 275 psi to 300 psi?  I've always

> used  "after 8/45" because of the 275/300 comparison

> tests run during that month.  I may need to be more

> specific so I'm looking for better info.

> > 

> > Dave Stephenson