(a) A benefit enhancement provided for by this act shall not be implemented if it would cause the publicly supported retirement system's unfunded actuarial accrued liabilities to exceed an eighteen-year amortization.
(b) A benefit enhancement provided for by this act shall not be implemented by any publicly supported system which has unfunded actuarial accrued liabilities being amortized over a period exceeding eighteen (18) years until the unfunded actuarial accrued liability is reduced to a level less than the standards prescribed by § 24-1-101 et seq.