(1) The chief executive may by written notice given to a licensee suspend a licence to carry out a class of high risk work immediately if the chief executive reasonably believes that—
(a) there is a ground for cancellation under section 134 or section 136; and
(b) the health or safety of the licensee or someone else may be endangered if the chief executive does not immediately suspend the licence.
(2) The suspension—
(a) operates immediately after the licensee is given notice of the suspension; and
(b) continues to operate until the earlier of—
(i) 28 days after the day the notice is given to the licensee; or
(ii) the chief executive advises the licensee in writing that the suspension is revoked; or
(iii) the chief executive cancels the licence under section 135 or section 137.