These pictures show why it is so important to have your fire suppression system inspected on a regular basis.
This particular cylinder was over due for a 12 year hydro-static test . As a result of neglect , the cylinders began to develop holes , causing the liquid agent to leak out and corrode the cabinet and walls where it was mounted . The system would not have worked no liquid agent agent would have came out upon discharge to extinguish a fire had one occurred