March 2008

Bonus Report: Heat Transfer Developments

Case 43: Containing a failed impeller

A quick analysis can help direct further efforts

Sofronas, A., Consulting Engineer

Containing failed rotating parts can be a real safety concern. When a production diesel engine turbocharger impeller came apart the fragments were contained in the housing. Management was concerned that if the high-speed impeller failed again it could burst through the housing and cause injuries. The following analysis was performed to determine how close the impeller was to breaking through the housing.1 If the analysis indicated it could break through, the design group said it would do the recommended expensive burst testing. Flywheels, rotors and impellers usually fail at the bore into three or more pie-shaped fragments. High-speed photography shows that the pieces tend to move in the

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 email Peter Ramsay or call +44 20 3409 2240*.

*Access will be granted the next business day.

Related Articles

From the Archive

Comments

Comments

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