Kentucky Retirement Systems, Frankfort, issued an RFP for an actuarial consulting firm, said CIO John Krimmel. The contract of the $14 billion fund's current actuary, the Segal Co., is set to expire June 30; the firm will be invited to rebid. The RFP is available on the plan's website at http://www.kyret.com. Proposals are due by 4:30 p.m. EDT April 21. Fund officials plan to interview finalists by May 10 and announce selections May 18.