(A) This chapter does not apply to:

(1) boilers under federal control or under regulations of Title 49 of the Code of Federal Regulations, Parts 192 and 193;

(2) hot water supply boilers equipped with ASME-National Board approved safety relief valves which are directly fired with oil, gas, or electricity when none of the following limitations are exceeded: heat input of 200,000 BTU per hour; water temperature of 210 degrees Fahrenheit; nominal water-containing capacity of 120 gallons;

(3) boilers in the care, custody, and control of research facilities and used solely for research purposes which require one or more details of noncode construction or which involve destruction or reduced life expectancy of those vessels so long as a timely inspection report is filed pursuant to Section 41-14-120;

(4) boilers operated and maintained for the production and generation of electricity so long as a timely inspection report is filed pursuant to Section 41-14-120;

(5) boilers operated and maintained as part of a manufacturing process so long as a timely inspection report is filed pursuant to Section 41-14-120;

(6) boilers that are subject to OSHA standards of compliance so long as a timely inspection report is filed pursuant to Section 41-14-120;

(7) boilers operated and maintained by a public utility or the Public Service Authority including, but not limited to, boilers operated and maintained for the production of electricity so long as a timely inspection report is filed pursuant to Section 41-14-120.

(B) The following boilers are exempt from the requirements of Sections 41-14-120 and 41-14-130:

(1) boilers that are located on farms and used solely for agricultural or horticultural purposes;

(2) heating boilers that are located in private residences or in apartment houses of less than six family units.

(C) All pressure vessels are exempt from regulation under this chapter.