Definition(s)
Anti-freeze System
A wet pipe sprinkler system employing automatic sprinklers attached to a piping system containing an anti-freeze solution and connected to a water supply. The anti-freeze solution is discharged, followed by water, immediately upon operation of sprinklers opened by heat from a fire.
Source: Resolution A.800(19), Revised Guidelines for Approval of Sprinkler Systems Equivalent to that Referred to in SOLAS Regulation 11-2/12, 23 November 1995, International Maritime Organization. Regulatory Guidance