Upon each inspection of a boiler the inspecting authority shall, if the boiler is found safe, issue a certificate of inspection to the owner, who shall post it near the boiler. A certificate of inspection must be posted prior to placing the boiler into service. The certificate shall state its date of issuance, the maximum working pressure or temperature allowable until the next inspection, and such further information as the issuer may deem necessary.

At any time after the issuance of a certificate of inspection it may be removed and canceled by the commissioner or other inspecting authority upon the finding by an inspector that the boiler is defective or that the owner suffers or permits the same to be improperly operated.