Most igniters in gas turbine applications are electrical spark igniters, similar to automotive spark plugs. Hot-surface igniters are commonly used in cooking ovens, boilers, and modern gas furnaces. Once ignited, rocket chambers are self-sustaining and igniters are not needed. In ensuing year, gas igniters, thermostats, and small d.c. motors were added. When the afterburner is turned on, fuel is injected and igniters are fired. This system used a waste-spark design, and the coils had integrated igniters. For added reliability of restart, the engine has dual redundant pyrophoric igniters (TEA-TEB). Raptor uses "dual redundant torch igniters". Many of the grenades retained their original black powder loads and igniters. In this case, they are sometimes referred to as flame igniters. The Igniters, with whom he began his recording career. The Faraday's club of Electrical Igniters. In 1982 Pengilly became involved in a one-off EP project with the band, The Igniters. Ems-Patvag develops and produces igniters (ei.