Validity of inspection certificate for boilers

1. A certificate of inspection, issued in accordance with this article, is valid until expiration unless some defect or condition affecting the safety of the boiler is disclosed and if all inspection fees have been paid. A certificate of inspection is valid for the following time periods: a. Thirty-six months for power boilers over one hundred thousand pounds [45359.24 kilograms] of steam per hour as allowed by North Dakota Century Code section 23.1-16-07. b. Twelve months for steam traction engines. c. Twelve months for all other power boilers. d. Thirty-six months for hot water heating and hot water supply boilers. e. Twenty-four months for low-pressure steam boilers. 2. A certificate issued for a boiler inspected by a special inspector is valid only if the boiler for which it was issued continues to be insured by a duly authorized insurance company, covered by a written inspection agreement with an authorized inspection agency, or inspected by an accredited owner/user inspection organization. A two-month grace period must be extended for any certificate.