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.
flake. n. 1. a small thin piece or layer chipped off or detached from an object or substance; scale. 2. a small piece or particle: a flake of snow. 3. a thin layer or stratum. 4. (Archaeology) archaeol. a. a fragment removed by chipping or hammering from a larger stone used as a tool or weapon.