1. The chief boiler inspector shall inspect each boiler used or proposed to be used within this state. The inspection must be thorough as to the construction, installation, condition, and operation as provided by the rules adopted to implement this chapter. An exempt boiler may be inspected by the chief boiler inspector when the owner, the owner's agent, or the user of the boiler makes written request for inspection to the department. 2. Each boiler of one hundred thousand pounds [45359.24 kilograms] per hour or more capacity, used or proposed to be used within this state, which has internal continuous water treatment under the direct supervision of a graduate engineer or chemist, or one having equivalent experience in the treatment of boiler water when the water treatment is for the purpose of controlling and limiting serious corrosion and other deteriorating factors, and with respect to which boiler the chief boiler inspector has determined the owner or user has complied with the prescribed recordkeeping requirements, must be inspected at least once every thirty-six months internally while not under pressure, and at least once every twelve months externally while under pressure. If a hydrostatic test is necessary to determine the safety of a boiler, the test must be conducted by the owner or user of the equipment under the supervision of the chief boiler inspector. The owner or user of a boiler of one hundred thousand pounds [45359.24 kilograms] per hour or more capacity desiring to qualify for thirty -six-month internal inspection intervals shall keep available for examination by the chief boiler inspector accurate records showing the date and actual time the boiler is out of service and the reason for being out of service, and the results of the chemical and physical analysis of the boiler water, whether from laboratory analysis of samples taken at regular intervals of not more than forty-eight hours or from continuous online analyzers, which will adequately show the condition of the water and any other elements or characteristics of the water capable of producing corrosion or other deterioration of the boiler or its parts. If an inspection discloses deficiencies in equipment or in operating procedures, inspections may be required once every twelve months.
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