UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close
Already an Engineering360 user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your Engineering360 Experience

close
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

LUL - T0431

Flash butt welding of rails

active, Most Current
Organization: LUL
Publication Date: 1 April 2012
Status: active
Page Count: 8
scope:

This specification covers the requirements for flash butt welding in the following situations:

a) Depot, to form welded rail strings using the following rail types:

I. 56E1 rail in grades R220, R260 and R350HT;

II. 95RBH rail in grades R220, R260 and R350HT;

III. Section 75 conductor rail.

b) Mobile (i.e. on-site), using the following rail types:

I. 56E1 rail in grades R220, R260 and R350HT;

II. 95RBH rail in grades R220, R260 and R350HT;

III. Section 75 conductor rail.

c) Welding of leg-ends to cast crossings, using 56E1 rail in grade R260.

Notes:

1. The rail grades listed above are defined in EN 13674-1; other grades may be introduced following current trials

2. Although grade R220 is included in the scope of this specification, it is unlikely that there will be a need to weld it in a depot situation as it is no longer purchased;

3. The conductor rail listed above is defined in BS 7865;

4. The requirements in this specification regarding Section 75 conductor rail may be applied to Section 65 conductor rail in the event that that rail is to be welded.

This specification covers the entire flash butt welding process, i.e.

a) approval of welding contractor or organisation;

b) procedure and machine approval;

c) approval of other profiles and grades following procedure and machine approval;

d) production welding;

e) production weld testing and acceptance criteria;

f) weld identification and records.

Purpose

This specification sets out the requirements for flash butt welded rail joints for installation in the LU infrastructure.

Document History

T0431
April 1, 2012
Flash butt welding of rails
This specification covers the requirements for flash butt welding in the following situations: a) Depot, to form welded rail strings using the following rail types: I. 56E1 rail in grades R220,...

References

Advertisement