16.—(1) The Board may, having regard to—
(a)the economical, effective and efficient management of its functions; and
(b)the costs likely to be incurred in the particular case,
determine that a firefighter member who is aged 55 but under normal retirement age should be retired from the service.
(2) The pension of a person in respect of whom a determination is made under paragraph (1) shall be calculated in accordance with article 11.