July 2009

Engineering Case Histories

Case 51: Phantom failures

Why some are very elusive

Sofronas, A., Consulting Engineer

While I would like to say all of my troubleshooting efforts have been successes, this wouldn't be true. Those who say they have always found the true cause of failures haven't tried to solve many problems. There are those failures that haunt us, which I call phantom failures, because they are so elusive. Although we perhaps make changes so the problem doesn't recur, we often have not found the true cause. Here are a few examples: 1. A mixer/reactor vibrated excessively; however, when it was opened and inspected, no cause was found. 2. A pipe fell out of the pipe rack and ruptured for no apparent reason. 3. A pipe failed due to fatigue at a weld, but there appeared to be no vibratio

Log in to view this article.

Not Yet A Subscriber? Here are Your Options.

1) Start a FREE TRIAL SUBSCRIPTION and gain access to all articles in the current issue of Hydrocarbon Processing magazine.

2) SUBSCRIBE to Hydrocarbon Processing magazine in print or digital format and gain ACCESS to the current issue as well as to 3 articles from the HP archives per month. $409 for an annual subscription*.

3) Start a FULL ACCESS PLAN SUBSCRIPTION and regain ACCESS to this article, the current issue, all past issues in the HP Archive, the HP Process Handbooks, HP Market Data, and more. $1,995 for an annual subscription.  For information about group rates or multi-year terms, contact J'Nette Davis-Nichols at Jnette.Davis-Nichols@GulfEnergyInfo.com or +1 713.520.4426*.

*Access will be granted the next business day.

From the Archive

Comments

Comments

{{ error }}
{{ comment.comment.Name }} • {{ comment.timeAgo }}
{{ comment.comment.Text }}