Okla. Admin. Code § 380:25-3-9
If a Special Inspector, upon first inspection of a new risk, finds that a boiler or pressure vessel, or any appurtenance thereof, is in such condition that his company would refuse insurance, the company shall IMMEDIATELY notify the Chief Boiler Inspector and submit a report on the defects. If, upon inspection, a Special Inspector finds a boiler or pressure vessel to be unsafe for further operation, he shall promptly notify the owner or user and the Chief Boiler Inspector, stating what repairs or other corrective measures are required to bring the object into compliance with these rules and regulations. Until such corrections have been made no further operation of the boiler or pressure vessel involved shall be permitted. If an inspection certificate for the object is required and is in force, it shall be suspended by the Chief Boiler Inspector. When reinspection establishes that the necessary repairs have been made or corrective actions have been taken and that the boiler or pressure vessel is safe to operate, the Chief Boiler Inspector shall be notified. At that time, a certificate of operation, where applicable, will be issued.
Okla. Admin. Code § 380:25-3-9