430 ILCS 75/15
Any owner or user of boilers or pressure vessels subject to Section 10 of this Act who maintains and operates, under the supervision of one or more regularly employed engineers who meet the experience and education requirements of the Board, an inspection or maintenance program in which one or more inspectors are regularly employed on inspection of boilers or pressure vessels operated by the owner or user shall, upon application to the Board showing that fact and showing that the owner or user has the financial ability to bear any loss and to pay all final judgments or awards obtained against the owner or user by reason of the operation of the boilers or pressure vessels, be authorized to act as a self-insurer of his or its boiler and pressure vessel risk in this State; and when so authorized, the owner-user shall employ special inspectors to supervise inspections performed at the owner-user's facilities. The owner-user and the regularly employed special inspectors shall be entitled to all the rights and privileges and shall be subject to all the requirements, duties, and obligations provided in this Act respectively for boiler and pressure vessel insurance companies and special inspectors.
430 ILCS 75/15