I think it may be an English abbreviation, barrier-free, i.e. accessible.
•There are a total of 15,364 regular population (rated-capacity) cells within CSC institutions. Of those, CSC provides 428 barrier-free cells, of which 37 are transitional (i.e., health care cells, segregation cells). As such, 391 permanent barrier-free cells represent 2.5% of all accessible spaces across CSC, which is above the 2% requirement in the Federal Correctional Facilities Accommodation Guidelines for CSC as a whole. However, some individual institutions were above the 2% level of accessible cells, whereas others were below.
•Barrier-free cells are provided in maximum, medium, and minimum security institutions, women's institutions, multi-level institutions, healing lodgesFootnote 176 as well as in its RTCs.
http://www.csc-scc.gc.ca/publications/005007-2017-eng.shtml
cellules à accès facile in the French version