Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here


turbine wreck from "Lightning Strike"

turbine wreck from "Lightning Strike"

turbine wreck from "Lightning Strike"

Just wondering if any one heard of this and had some details on how it happen and the extent of damages

Back in September a 300 MW power plant in Dominica wrecked. I learned about from another news report related to the quick installation of some combustion turbines to help while the wreck is being repaired.

this article implies over speed due to valves not responding. I wonder if surge disabled electronic governor.

RE: turbine wreck from "Lightning Strike"

G'day byrdj,

> this article implies over speed due to valves not responding.

I didn't see this in the linked article, perhaps I missed it, but...

> I wonder if surge disabled electronic governor.

This alone does not explain the failure. On a machine that size there will be mechanical overspeed protection.


RE: turbine wreck from "Lightning Strike"

Just the photo showing a piece of the turbine "thrown" outside of the casing implies over speed to me.

Mechanical OS devices were being removed when I left the field decades ago.

RE: turbine wreck from "Lightning Strike"

In the mid-1990's operator error motorized the generator on one of our units, 270 MW coal-fired. Believe the machine was on turning gear at the time; vibration from acceleration destroyed the turbine, pulled anchor bolts out of the T-G pedestal, caused a lube oil fire and a hydrogen explosion. Generator was fried in the fire. Damage resembled the photos in this thread. I participated in recovery, which took about 18 months. Maybe a lighting strike could start a similar chain of events.

www.SlideRuleEra.net idea

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


eBook - Mastering Tolerances for Machined Parts
When making CNC machined parts, mastering tolerances can be challenging. Are general tolerances good enough? When does it make sense to call out for tighter tolerances? Do you need a better understanding of fits, datums, or GD&T? Learn about these topics and more in Xometry's new e-book. Download Now
eBook – How to Choose the Correct Corrosion Testing Method
When designing a metal component, engineers have to consider how susceptible certain alloys are to corrosion in the final product’s operating environment. In a recent study by NACE (National Association of Corrosion Engineers), it was estimated that the direct and indirect costs of corrosion in the United States is approximately 6.2% of the GDP. In 2016, that cost exceeded $1 trillion dollars for the first time. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close