Where the member spouse is an active member of the defined benefit scheme concerned at the date of the order and subsequently receives or commences to receive retirement benefit on termination of reckonable service as a result of incapacity (within the meaning of that term under the requirements of the Revenue Commissioners for approval of an occupational pension scheme under Chapter II of Part I of the Finance Act, 1972) prior to normal pensionable age, the designated benefit payable from that pension scheme shall be calculated in accordance with the formula in article 7 (2) except that:
A = the amount of retirement benefit payable in accordance with the rules in force in relation to retirement on incapacity excluding: any such benefit secured by additional voluntary contributions; any such benefit which represents a transfer of accrued rights from another pension scheme; and any additional benefit granted under the rules of the pension scheme specifically on account of retirement on
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