http://www.legislation.gov.uk/uksi/1996/1592/schedule/7/paragraph/3n2/madeThe Construction (Health, Safety and Welfare) Regulations 1996Fire safetyFireFire preventionHealth and safety requirementsKing's Printer of Acts of Parliament2017-05-05HEALTH AND SAFETYThe Construction (Health, Safety and Welfare) Regulations 1996RegulationsThe Construction (Design and Management) Regulations 2007Sch. 4reg. 3reg. 1SCHEDULE 7PLACES OF WORK REQUIRING INSPECTION3iBefore any person carries out work at the start of every shift; andiiafter any event likely to have affected the strength or stability of the cofferdam or caisson or any part thereof.