This chapter shall not be construed as in any way preventing the use, sale or

This chapter shall not be construed as in any way preventing the use, sale or reinstallation of a boiler or pressure vessel referred to in subsections (1) and (2) (45-23-13) provided it has been made to conform to the rules and regulations of the board governing existing installations and provided, further, it has been found upon inspection to be in a safe condition and that an inspection certificate can be issued.