(1) Where a share of a pension is payable to a non-member spouse under this Part, the Board is to commute that share to a lump sum if that non-member spouse predeceases the member spouse in respect of whom the pension is being paid.(2) For the purposes of subregulation (1) , the commutation factors are to be determined by the Board on the advice of the Actuary.(3) A share of a pension paid or payable to a non-member spouse under this Part does not revert to the widow or widower of that non-member spouse on the death of that non-member spouse.(4) A lump sum payment calculated under subregulation (1) is to be paid to the legal personal representative of the non-member spouse and is to be made in accordance with Part VIIIB of the Family Law Act.(5) A share of a pension payable to a non-member spouse under this Part ceases (a) on the death of the relevant member spouse; or(b) where a reversionary pension is payable in respect of a member spouse, on the cessation of that reversionary pension.