78.If the reservoir is not being constructed or restored to use, this section requires the reservoir manager of high and medium risk controlled reservoirs to appoint a supervising engineer to supervise the reservoir in accordance with section 50 and notify SEPA of the appointment within 28 days. A supervising engineer must be in place at all times unless the reservoir is being constructed or restored to use. Subsection (2) makes it clear that a reservoir manager does not need to appoint a supervising engineer before a final certificate is issued for the reservoir where it is being constructed or restored to use. Subsection (3) requires the supervising engineer to be a member of a panel of reservoir engineers established under section 27 who is eligible to be appointed under this section. Unlike inspecting engineers, there is nothing to prevent a supervising engineer being an employee of the reservoir manager or having previously been a construction engineer in relation to the reservoir.