NICET ITWBS key terms

The standard that sets minimum requirements for inspecting, testing, and maintaining water-based fire protection systems, including sprinklers, standpipes, and fire pumps. It defines frequencies, procedures, and recordkeeping duties for system owners and inspectors.

The organization, office, or individual with legal authority to enforce fire code requirements, approve equipment and plans, and interpret standards. Inspectors report deficiencies and obtain acceptance from this authority when required.

The installation standard for automatic sprinkler systems. It covers design, spacing, pipe sizing, and component requirements, and inspectors use it to judge whether field conditions match approved installation criteria.

The installation standard for standpipe and hose systems. It addresses pipe sizing, outlet locations, pressure limits, and hose valve requirements that inspectors verify during acceptance and periodic testing.

The installation standard for stationary fire pumps. It covers pump selection, drivers, controllers, and accessories, and provides the basis for evaluating pump performance during flow tests.

The national fire alarm and signaling code. It governs initiating devices, notification appliances, and monitoring circuits, including waterflow and supervisory signals connected to fire protection systems.

Equipment or materials included in a published list by an organization acceptable to the authority having jurisdiction, indicating the product has been tested and meets a recognized standard.

A condition in which a fire protection system or part of it is out of service because of a shutdown, damage, or deficiency. Impairments require notification, alternate protection, and prompt restoration.

A shutdown scheduled in advance so building occupants, the fire department, and the authority having jurisdiction can be notified and temporary protection or a fire watch arranged before work begins.

A safety procedure that isolates hazardous energy sources, such as electricity or pressure, with locks and warning tags before maintenance. It prevents accidental startup or release of stored energy while work is underway.

Personal protective equipment, such as safety glasses, gloves, hard hats, and hearing protection, worn to reduce exposure to jobsite hazards during inspection, testing, and maintenance activities.

A space large enough for a person to enter, with limited entry or exit, and not designed for continuous occupancy. It may contain hazardous atmospheres, so entry often requires permits, testing, and attendants.

A pump, usually electric motor or diesel driven, that supplies water at adequate pressure and flow to sprinkler, standpipe, or other fire protection systems. It is tested periodically to confirm performance.

Pump operation at zero flow with the discharge valve closed. Churn pressure is the highest pressure the pump produces and is checked during flow tests against the manufacturer's curve.

The flow rate, in gallons per minute, at which a fire pump is designed to deliver its rated pressure. Tests compare actual flow and pressure at this point with the pump's nameplate data.

A performance test that measures a fire pump's suction and discharge pressures at churn, rated flow, and peak load. Results are compared with the manufacturer's curve to detect wear or problems.

The pressure in a water supply or piping system measured when no water is flowing. It serves as a baseline for flow tests and helps estimate available pressure.

The pressure remaining in a system while water is flowing during a flow test. The drop from static pressure indicates how much water the supply can deliver.

A test that records static pressure, flowing pressure, and flow rate at hydrants to estimate the available water supply for fire protection. Results help evaluate sprinkler and pump performance.

A test comparing static and residual pressure at the main drain to detect restrictions, closed valves, or deterioration in the water supply. Results are compared with previous readings.

A valve at the end of sprinkler piping that opens to simulate one sprinkler operating. It tests waterflow alarms, pressure switches, and alarm signaling without damaging a sprinkler.

A cabinet stocked with spare sprinklers of each type and temperature rating used in the system, plus a sprinkler wrench. It must be accessible and properly located.

The pipe that directly serves sprinklers, connected to a cross main. Inspectors verify support, spacing, and condition of branch lines during periodic inspections.

A vertical pipe that supplies water from the main supply to upper floor levels or to a system. Risers often carry control valves, gauges, and alarm devices that inspectors check.

An internal examination of piping and certain valves required at five-year intervals to identify corrosion, sediment, or obstruction. It may require draining, opening, or flow testing.

A fixed piping system with hose outlets and valves, installed in buildings so firefighters can connect hoses and get water on upper floors or large areas.

A valve at a standpipe outlet that controls water flow to a fire hose. Inspectors verify it operates freely, opens fully, and is not leaking or damaged.

A hose valve designed to reduce outlet pressure to a level safe for hose use. It must be tested periodically to confirm the outlet pressure stays within limits.

A location with a standpipe connection, hose, and nozzle, often in a cabinet or rack. Inspectors check that the hose is intact, properly racked, and the valve operates.

A valve that turns water on or off to a fire protection system or portion of it. It must be kept open, supervised, and inspected to confirm proper position.

An outside screw and yoke valve whose stem and yoke are outside the body. The rising stem shows whether the valve is open or closed, which makes inspection easier.

A device that senses water movement in sprinkler piping and sends an alarm signal. It is tested with the inspector's test valve or main drain to confirm alarm operation.

A device that monitors abnormal conditions, such as a closed control valve, low air pressure, or low water level, and sends a supervisory signal. It is not a fire alarm.

A switch that detects movement of a control valve away from its normal open position and sends a supervisory signal. It is checked during valve inspections.

A valve that separates air pressure in a dry pipe system from water supply pressure. When a sprinkler opens and air escapes, the valve trips and admits water.

A valve in a wet sprinkler system that allows water to flow into the system in one direction and provides a connection for alarm devices when water moves.

A condition found during inspection, testing, or maintenance that could impair the performance of a fire protection system. It must be reported and corrective action should be tracked.

A tag attached to a system, valve, or component that records inspection or test dates, results, and the inspector's name. It provides a quick reference between formal reports.

A written record summarizing inspection and test results, deficiencies found, and actions taken. It is provided to the owner and may be reviewed by the authority having jurisdiction.