A code of compliance is the first objective when it comes to fire prevention system designing. There are some basics that needs to be observed and put in the system, so that other advanced detection system is carried on with precision. Nidhi fire service follow fire load calculation, egress time, total coverage of system, NFPA-NATIONAL BUILDING CODE-local authority code compliance. Alarms and notifications are one of the elements in the system design. Suppression systems and maintaining safety are part of installation of prevention system designing which must be based on test data, field experience and sound engineering principles.