PBSP meaning in General ?

Pelican Bay State Prison (PBSP) is the only supermax facility in the state of California. This prison (which is 275 acres (111 ha)) is located in Del Norte County, California. The prison takes its name from a shallow bay on the Pacific coast, about 2 mi (3.2 km) to the west. The prison lies in a detached section of Crescent City, several miles north of the main urban area and just south of the Oregon border. PBSP's primary purpose is to house violent male prisoners from the California state prison system; 40% of Pelican State's inmates are serving life sentences and nearly all have histories of violence at other California prisons which resulted in their transfer to Pelican Bay. The sole exception are the institution's minimum security inmates, who work as part of the prison's outside maintenance and firefighter programs.

Facilities A and B are designated as Level IV, General Population (GP) facilities with two-man cells. Facility-C, Restricted Housing (RH), consist of the only remaining, dedicated long-term Security Housing Units (SHU), C-7 through C-12, in the state. In addition to the supermax population, RH also consist of Administrative Segregation (Ad/Seg) housing units, C-1 through C-6 and Short Term Restrictive Housing (STRH) Facility-D is designated as a Level II Facility. There is also a collocated 400-bed Level I, Minimum Security unit (outside of the secure perimeter) which provides inmate orderlies for general service tasks at and around the main prison.