Crossrail’s Non-Conformance (Defect) Reporting System
Summary
The construction industry has historically been reluctant to proactively identify defects due to fear of cost and reputational impact, which unfortunately resulted in latent defects being discovered far too late. Crossrail acted upon lessons learned from the Channel Tunnel Rail Link project and ensured defects were identified and dealt with in an open and transparent way.
Crossrail introduced standard contract clauses which encouraged its Contractors to proactively raise defects when they were discovered and deal with them appropriately. This forward-thinking approach helped Crossrail’s rework costs to be less than 1% of the project cost.
Since the Elizabeth Line opened in May 2022, a very low level of defects has emerged. This is testament to the world leading Defect reporting culture and processes implemented, which ensured that the completed railway is fully technically compliant and safe to operate. This paper sets out in more detail how this achievement was realised.