Crane Rail Wear Limit

[engineeranonymous]

Hi All,

Is anyone aware of an Australian Standard for allowable wear on crane rail (specifically for a bridge crane)?

 

[RolMec]

Hi,
only indirectly, refer AS 1418.1 2002 clause 7.20.6.1 on lifecycle.
If this is contractual:
As wear is dep. upon environment, the designer / operator must assure that wear shall not impact on serviceability / reliability.
If wear per year would arive at a significant weakening of rail cross section, this may serve as paramenter.
Design as per stress cycles is considered independently from wear.

Regards
R

Roland Heilmann

 

[kingnero]

What kind of wear?
You can get purely vertical wear (loss of metal of the railhead), fatigue cracking (head checking, squats, flaking, shelling, ...), or abnormal geometrical deformation (lipping, burrs, field forming/flowing, ...) on rails.
If you cannot get specific australian information, I might find something in european standards. Most of what I've dealt with, was local railway specifications. I doubt it is regulated for crane wear, however it might get you started.

 

[engineeranonymous]

Hi Kingnero,

I was after a wear in terms of loss in cross-sectional area.
I have found some railway specifications - I believe they have permissible limits anywhere from 10 - 50% loss in cross-sectional area - but I wanted to find a standard for crane rail, preferably an Australian Standard.

 

[racookpe1978]

Corrosion aside, I see almost no way that a crane rail wear can be compared to a railroad track wear standard: The crane is going between zero and walking speed, with no "collisions" and very, very modest accelerations over that range. Lots of stops and starts as the load is eased into position. Vertical forces of course, braking forces as the load is moved, but not hundreds of individual wheel loads under a train running 60-100 kph with 1000-2000-6000 tons around raised curves with loads shifting and wobbling from track edge to track edge.