Monthly Archives: April 2013

Gaining wisdom

I have written on a few occasions in the past about how engineering is not absolute and requires a sensible attitude to rules, the ability to be comfortable with uncertainty and some degree of professional wisdom.  That was all just … Continue reading

Posted in Eng'g philosophy, Research | Leave a comment

Arkansas failure – PHMSA information

When I wrote yesterday about the Arkansas failure the PHMSA website was down.  It’s now available again and has a page devoted to the Arkansas incident.  Of greatest interest is the Corrective Action Order, which contains a whole lot of interesting … Continue reading

Posted in Incidents | 3 Comments

Arkansas failure

A couple of weeks ago (29 March) there was a significant failure of an ExxonMobil oil pipeline in Mayflower, Arkansas.  It attracted a lot of attention because it occurred in a suburban area – you are guaranteed to get lots … Continue reading

Posted in Incidents | 2 Comments

Test pressure factor

Pipeline engineers are familiar with the requirement that the hydrostatic test pressure of a pipeline must be at least 1.25 times the MAOP – see AS 2885.1 Clause 4.5.4 and Equation 4.5.4(1).  What seems to be not so well known … Continue reading

Posted in Pipeline design, Research, Standards | Leave a comment