NICET Inspection and Testing of Water-Based Systems Level II

For a conventional dry pipe system outside refrigerated spaces, what is the routine trip-test interval under NFPA 25 (2023), with a partial-flow test permitted when a full-flow test is not due?

• AQuarterly
• BEvery 5 years
• CAnnually
• DMonthly

For a conventional dry pipe system outside refrigerated spaces, what is the routine full-flow trip-test interval under NFPA 25 (2023), in addition to testing whenever the system is altered?

• AEvery 3 years
• BAnnually
• CEvery 5 years
• DEvery 10 years

An approved dry-system leakage test procedure specifies an initial pressure of 40 psi and a minimum final pressure of 37 psi after 2 hours with the source isolated. What is the maximum permitted pressure loss for this test?

• A1 psi
• B3 psi
• C5 psi
• D10 psi

Under NFPA 25 (2023) Section 13.4.5.2.1, at what interval must the priming water level in a dry pipe valve be tested?

• ASemiannually
• BMonthly
• CAnnually
• DQuarterly

At what interval must quick-opening devices (QODs) such as accelerators and exhausters on dry pipe systems be tested under NFPA 25 (2023)?

• AMonthly
• BSemiannually
• CQuarterly
• DAnnually

Where a dry pipe sprinkler system is equipped with a low air pressure supervisory alarm, how often does NFPA 25 (2023) Section 13.4.5.2.6 require the alarm to be tested?

• AWeekly
• BAnnually
• CEvery 3 years
• DEvery 5 years

Under NFPA 25 (2023) Section 13.2.4, how often must gauges monitoring air or nitrogen pressure on a dry pipe system be inspected to verify normal pressure?

• ASemiannually at the same time as supervisory switches
• BQuarterly regardless of whether air pressure is supervised
• CAnnually during the warm-weather dry valve trip test
• DMonthly, extending to quarterly with attended supervision

When must auxiliary drains (low-point drum drips) on a dry pipe sprinkler system be drained under NFPA 25 (2023) Section 13.4.5.3?

• AAfter each system operation and before freezing weather
• BOnly once per year after the warm-weather trip test
• COn a fixed weekly schedule during the summer months
• DEvery five years during internal piping assessments

A non-dwelling dry-system test uses the same normal gas pressure, test connection, and timing method as acceptance. All times below start when that connection is fully open. The investigation trigger is a total-delivery increase of at least 25%. Which interpretation is best supported? | Record | Valve trip | Water arrival | | --- | --- | --- | | Acceptance | 12 s | 40 s | | Current | 24 s | 54 s |

• AThe transit increase is 2 seconds, so the delivery comparison passes
• BThe valve-trip increase proves that downstream piping is unobstructed
• CTotal delivery increased 35%; investigate and examine the delayed trip
• DTotal delivery increased 50%; add trip time to each arrival reading

Per NFPA 25 (2023), strainers, filters, and restriction orifices inside dry pipe valves and quick-opening devices must be inspected internally and cleaned at what interval?

• AEvery quarter
• BEvery year
• CEvery 3 years
• DEvery 5 years

Under NFPA 25 (2023) Section 13.10, how must a nitrogen generator serving a dry pipe sprinkler system be maintained?

• AIn accordance with the manufacturer's instructions
• BUsing the quarterly procedure for quick-opening devices
• CBy trip testing the nitrogen unit annually with the valve
• DNitrogen generators are exempt from routine ITM rules

After an authorized dry-system trip test, which restoration plan best accounts for differences among dry pipe valve models?

• AReopen the supply first, then use water pressure to force the clapper into its set positi…
• BDrain and inspect as required, reset the valve and trim per its instructions, restore gas…
• CRemove every valve cover for resetting, even where the manufacturer specifies an external…
• DSet every dry valve to the same gas pressure because differential valves share one operat…

Under NFPA 25 (2023) Section 13.2.4, what is the required inspection schedule for pressure gauges on a wet pipe sprinkler system?

• AWeekly for physical condition and biweekly to verify normal water supply pressure
• BMonthly for good condition and operability, and quarterly for normal water pressure
• CQuarterly for physical damage and annually to verify normal water supply pressure
• DSemiannually for physical gauge operability and every five years for water supply pressure

Per NFPA 25 (2023), pressure gauges must be replaced or compared with a calibrated gauge every 5 years. A gauge passes the comparison if it is accurate to within what tolerance?

• A1% of the full scale range
• B5% of the observed reading
• C3% of full scale
• D10 psi of the calibrated gauge

Under NFPA 25 (2023), which waterflow alarm testing schedule is correct?

• ABoth mechanical water motor gongs and vane-type switches are tested quarterly
• BBoth mechanical water motor gongs and pressure switches are tested semiannually
• CMechanical water motor gongs semiannually; vane-type switches quarterly
• DMechanical water motor gongs quarterly; vane-type and pressure switches semiannually

Two wet risers share an upstream supply. The same verified instruments and drain arrangements were used for these observations; municipal operating conditions were confirmed comparable. Which follow-up best fits the pattern? | Riser | Prior static/residual | Current static/residual | | --- | --- | --- | | A | 80/60 psi | 80/43 psi | | B | 80/61 psi | 80/60 psi | A's control valve was operated during maintenance yesterday.

• AVerify A's valve status and local supply path, then retest and record the findings
• BAttribute both risers' supply to municipal deterioration and request pump replacement
• CAccept A because its static pressure is unchanged and B's drain result is normal
• DReplace A's remote sprinklers because the drain proves branch-line obstruction

An OS&Y valve maintenance instruction calls for annual full-travel operation, then return to its normal open position backed one-quarter turn to avoid jamming. Which field procedure follows that instruction?

• AClosed halfway to check stem movement and immediately returned to the open position
• BClosed completely and left shut for ten minutes to check for gate seating leakage
• COperated through its full range and returned to normal, backed one-quarter turn from full…
• DRotated only one or two turns until initial stem thread friction is felt by hand