Safety Shutdown (Lockout) : The safe shutdown of the flame effect in the event of the actuation of any flame effect primary safety control or limit switch
NFPA 160 Standard for Flame Effects Before an Audience, 2001 ed. http://www.nfpa.org/codes-and-standards/document-i nformation-pages?mode=code&code=160, (Std: Flame Effects Before an Audience - Amer) {259 NFC}