ESFR system materials tend to cost more than control mode systems (larger pipe sizes, more expensive sprinkler heads). Also, in most cases an ESFR system will require the installation of a fire pump, which is not always required for a control mode system. sprinkler systems are not required.
Definition of flay. 1 : to strip off the skin or surface of : skin The hunter flayed the rabbit and prepared it for cooking. 2 : to criticize harshly : excoriate He was flayed by the media for his controversial comments.
past participle of slay. transitive verb. 1 : to kill violently, wantonly, or in great numbers; broadly : to strike down : kill. 2 : to delight or amuse immensely slayed the audience. intransitive verb.