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.
9. to strip or deprive of skin; flay; peel; husk. 10. to remove or strip off (any covering, surface layer, etc.). 11. to scrape or rub a small piece of skin from (a part of the body), as in falling. 12. to urge on, drive, or whip (a draft animal, as a mule or ox).