An operation certificate issued pursuant to § 34-29A-39 is valid for not more than fourteen months from its date in the case of power boilers and high pressure, high temperature water boilers and twenty–six months in the case of heating boilers and hot water supply boilers. In the case of those boilers covered by subdivisions 34-29A-26(1), (2), and (3), for which the chief inspector has established or extended the operating period between required inspections, the certificate is valid for a period not more than two months beyond the period set by the chief inspector.

Source: SL 1973, ch 229, § 15; SL 1978, ch 257, § 5; SL 1982, ch 18, § 64.