y on TAV to tell them, Motherwell staff equally should have known better. The
elements of Motherwell’s failure were:
■ The process for ascertaining and then specifying the requirements of switches
they supplied and/or installed was not adequate.
■ They did not obtain the necessary data from the manufacturer and it follows that
they did not provide such data to their customers.
■ They did not understand the vulnerabilities of the switch or the function of the
padlock.
■ There was a reliance on TAV, which was not justified given the lack of information
provided and the critical role that Motherwell had in installing safety critical
equipment.