For the purposes of §§ 1-24-11 to 1-24-17, inclusive, a pool arrangement is any joint power agreement, pool, consortium, or other arrangement or collection of public agencies, whether or not formed under or pursuant to chapter 1-24 and whether or not a separate legal entity, by which one or more public agencies have provided for the payment of claims, liabilities, or other expenses or otherwise provided for or obtained coverage for property, personal injury, and workers compensation claims or group life, health, or accident coverage, general liability, public official and professional liability, or other coverage as authorized by the director of the Division of Insurance. A pool arrangement may only obtain excess insurance or reinsurance with insurance companies approved for such business by the director of the Division of Insurance.