http://www.legislation.gov.uk/id/uksi/1995/3163

SCHEDULE 2DANGEROUS OCCURRENCES

PART VDANGEROUS OCCURRENCES WHICH ARE REPORTABLE IN RESPECT OF AN OFFSHORE WORKPLACE

Collapses

76.

Any unintended collapse of any offshore installation or any unintended collapse of any part thereof or any plant thereon which jeopardises the overall structural integrity of the installation.