Application for permission to deviate from installation standards imposed by the Board's rules must be made in writing to the Board and must document why compliance with a prescribed standard is technically impractical and how the proposed modification would provide an equivalent degree of safety. The Board may request any additional information it deems necessary to assure that the modification provides an equivalent degree of safety. Any modification allowed applies solely to the specific installation described in the application and no other.
02-658 C.M.R. ch. 7, § 2