For any existing construction, as of the date of this standard, shall meet, at a minimum, NFPA 101 Life Safety Code, current edition. In the event of the construction of a new PPEC center or substantial modification of an existing facility, any subsequent edition of NFPA, Life Safety Code may be used, provided the licensing agency approve the use of such edition and that all construction and/or modifications meet the requirements of the approved edition.
15 Miss. Code. R. 16-1-2.20.1