Free NICET Inspection and Testing of Water-Based Systems Level II Exam Practice Questions

Sample Practice Questions

Try these 10 sample questions from the NICET Inspection and Testing of Water-Based Systems Level II Exam practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1A technician uses rubber insulating gloves for an electrical hazard encountered during water-based system maintenance. The gloves are already in service, and no damage incident or repair has occurred. What is OSHA's maximum routine interval between electrical retests?

   1. A.3 months
   2. B.6 monthsCorrect answer: B
   3. C.12 months
   4. D.24 months

   Explanation: OSHA Table I-5 requires rubber insulating gloves to be tested "Before first issue and every 6 months thereafter". The six-month interval governs these issued gloves; additional event-triggered tests can be needed sooner.

   Reference: OSHA Electrical Protective Equipment — 1910.137, Table I-5, Rubber insulating gloves row

2. 2A contractor can replace a branch line by shutting either one sprinkler zone or the entire building. Both approaches allow the same repair. What should be agreed with the customer when defining the outage scope?

   1. A.Shut every zone on the same building supply main
   2. B.Shut the smallest area that allows the repairCorrect answer: B
   3. C.Shut every zone throughout the affected building wing
   4. D.Shut every zone throughout the affected building floor

   Explanation: The guidance says to "Limit the scope and duration of the impairment". When the stated repair can be isolated in one zone, broader supply-main, wing or floor outages unnecessarily remove protection.

   Reference: FM Data Sheet 10-7 — Fire Protection Impairment Management — 2.2.2.3

3. 3A wet-pipe antifreeze system contains legacy propylene glycol and serves ordinary sprinklers rather than ESFR sprinklers listed for a higher concentration. Under the cited NFPA 25 (2023) guidance, what is the maximum permitted propylene glycol concentration by volume?

   1. A.30 percentCorrect answer: A
   2. B.38 percent
   3. C.40 percent
   4. D.50 percent

   Explanation: The laboratory states, "For propylene glycol solutions, the concentration cannot exceed 30% by volume". Its separately identified exception concerns premixed solutions with ESFR sprinklers listed for that use; the stem excludes that exception.

   Reference: NFPA Global Solutions/Dyne Antifreeze Testing — Listed and Legacy Solutions — Legacy solution concentration limits and ESFR exception paragraph

4. 4An electric fire pump is ready for its automatic-start test. Which method actually tests the automatic starting function?

   1. A.Create the initiating pressure drop with the controller in AUTOCorrect answer: A
   2. B.Press the manual start button with the controller in AUTO
   3. C.Use the emergency run mechanism with the controller in AUTO
   4. D.Switch the controller from AUTO to manual operation

   Explanation: The guidance says, "Test the pump in automatic mode via pressure drop or waterflow alarm". A manual or emergency start bypasses the initiating function being evaluated.

   Reference: FM Data Sheet 2-81 — Fire Protection System Inspection, Testing and Maintenance — 2.9.2.1.2(A)

5. 5A sprinkler system has been maintained alternately wet and dry over several years. Which obstruction mechanism deserves particular attention?

   1. A.Accumulation of internal pipe scaleCorrect answer: A
   2. B.Accumulation of construction debris
   3. C.Accumulation of raw-water sediment
   4. D.Accumulation of biological growth

   Explanation: The guidance identifies systems "maintained wet or dry alternately" as particularly susceptible to pipe scale. The wet/dry history points to that internal corrosion mechanism rather than establishing a construction, raw-water or biological source.

   Reference: FM Data Sheet 2-81 — Fire Protection System Inspection, Testing and Maintenance — 3.1.3.1(A), Pipe Scale

6. 6Before a day's work near an electrical hazard, a water-based system technician visually examines rubber insulating gloves. Which additional test must accompany that inspection under OSHA's in-service care rule?

   1. A.Hydrostatic test
   2. B.Ultrasonic test
   3. C.Air testCorrect answer: C
   4. D.Dye-penetrant test

   Explanation: OSHA states, "Insulating gloves shall be given an air test, along with the inspection." This daily integrity check is separate from the scheduled electrical retest.

   Reference: OSHA Electrical Protective Equipment — 1910.137(c)(2)(ii)

7. 7The customer has approved an outage for replacing a sprinkler section, but the replacement pipe has not arrived. How should the technician sequence the work?

   1. A.Isolate the system before confirming the delivery
   2. B.Drain the system while the material is being ordered
   3. C.Confirm the material is onsite before impairing protectionCorrect answer: C
   4. D.Close the control valve while the delivery route is arranged

   Explanation: Pre-outage preparation includes having "all piping and sprinklers needed for a job onsite and available." Waiting until material is available prevents avoidable time without protection.

   Reference: FM Data Sheet 10-7 — Fire Protection Impairment Management — 2.2.2.6(C)

8. 8When planning the routine annual test of an in-service wet-pipe antifreeze solution, which seasonal timing follows the laboratory's NFPA 25 (2023) guidance?

   1. A.At the end of the heating season
   2. B.Before the onset of freezing conditionsCorrect answer: B
   3. C.During the hottest part of the summer
   4. D.After the first sustained winter freeze

   Explanation: The guidance places annual testing "toward the beginning of heating season prior to the onset of freezing conditions." This timing allows the actual solution condition to be evaluated before freeze protection is needed.

   Reference: NFPA Global Solutions/Dyne Antifreeze Testing — Listed and Legacy Solutions — Opening paragraph on annual test timing

9. 9An electric fire pump with packed seals is running during a churn test. What observation is required at those seals?

   1. A.A completely dry packing gland throughout operation
   2. B.Adequate controlled waterflow through the pump sealsCorrect answer: B
   3. C.A heavy continuous spray from the packing gland
   4. D.Water leakage appearing only after the pump is stopped

   Explanation: The operating check is to "Verify waterflow through the pump seals is adequate". Packed seals need appropriate water leakage during operation; a dry gland, excessive spray or leakage only after stopping does not establish that condition.

   Reference: FM Data Sheet 2-81 — Fire Protection System Inspection, Testing and Maintenance — 2.9.2.1.2(B)(2)

10. 10Mud and small stones are found in piping supplied from an open reservoir. Which supply feature should be investigated as a likely entry path?

    1. A.The check-valve clapper's hinge
    2. B.The pump's intake arrangement and screeningCorrect answer: B
    3. C.The sprinkler branch-line slope
    4. D.The main-drain valve's stem packing

    Explanation: The guidance associates raw-water debris with "poorly arranged or inadequately screened intakes". Intake position and screening can explain how the observed material entered the supply.

    Reference: FM Data Sheet 2-81 — Fire Protection System Inspection, Testing and Maintenance — 3.1.3.1(C), Raw Water Sources