We have a complete deluge system on our coker. We deluge around each bottom head, and walkways in this area. the switch deck valves are also deluged. along with the top head deck . The deluge systems have multiple push buttons that the operators can activate. There are buttons located on both sides of the coker at the stairways Each level is equipped with a by-pass valves for testing that is done 2 times per year. The operators have a camera link to all deck levels. This deluge system is tied directly to the fire dept, where once activated we have immediate responce.