Describe Dry-Barrel and Wet-Barrel Hydrants

Firefighter I Water Supply Chapter 12 Test

Name: Date:

Directions: Write the correct letter on the blank before each question.

Objective 1: Describe dry-barrel and wet-barrel hydrants.

______1. Most fire hydrants are made of: (605) A. PVC. B. steel. C. bronze. D. cast iron.

______2. Closing a hydrant too fast may cause a sudden increase in water pressure called: (605) A. water surge. B. water hammer. C. pressure growth. D. pressure increase.

______3. Which type of hydrant is installed in areas where prolonged periods of subfreezing weather are common? (605) A. Dry-barrel B. Wet-barrel C. Open-barrel D. Closed-barrel

______4. Which type of hydrant is usually installed in warmer climates where prolonged periods of subfreezing weather are uncommon? (607) A. Dry-barrel B. Wet-barrel C. Open-barrel D. Closed-barrel

Fire Protection Publications Chapter Test Oklahoma State University 12-1 Firefighter I Water Supply

______5. Which type of hydrant has a horizontal compression-type valve at each outlet? (607) A. Dry-barrel B. Wet-barrel C. Open-barrel D. Closed-barrel

______6. Which type of hydrant has a main valve located below the frost line that prevents water from entering the hydrant barrel? (605-606) A. Dry-barrel B. Wet-barrel C. Open-barrel D. Closed-barrel

______7. The hydrant barrel of a dry-barrel hydrant is usually ___ from the top of the stem down to the main valve. (606) A. open B. closed C. empty D. filled with water

______8. When a dry-barrel hydrant is closed after use, the remaining water empties through a: (606) A. drain hole. B. drain plug. C. gate valve. D. butterfly valve.

______9. When ensuring that a dry-barrel hydrant is draining correctly, close the main valve by turning the step nut clockwise until resistance is felt, then turn it ___ counterclockwise. (607) A. a quarter-turn B. a full-turn C. two turns C. three turns

Fire Protection Publications Chapter Test Oklahoma State University 12-2 Firefighter I Water Supply Objective 2: Discuss fire hydrant marking and location.

______10. According to the NFPA®, orange fire hydrants indicate a flow of: (609) A. less than 500 gpm (1 900 L/min). B. 500 to 999 gpm (1 900 L/min to 3 780 L/min). C. 1,000 to 1,499 gpm (3 785 L/min to 5 675 L/min). D. 1,500 gpm (5 680 L/min) or greater.

______11. According to the NFPA®, ___ hydrants indicate a flow of less than 500 gpm (1 900 L/min). (609) A. red B. green C. orange D. light blue

______12. According to the NFPA®, ___ hydrants indicate a flow of 1,000 to 1,499 gpm (3 785 L/min to 5 675 L/min). (609) A. red B. green C. orange D. light blue

______13. According to the NFPA®, light blue hydrants indicate a flow of: (609) A. less than 500 gpm (1 900 L/min). B. 500 to 999 gpm (1 900 L/min to 3 780 L/min). C. 1,000 to 1,499 gpm (3 785 L/min to 5 675 L/min). D. 1,500 gpm (5 680 L/min) or greater.

______14. Decisions regarding location, spacing, and distribution of fire hydrants are usually made by: (607) A. contractors. B. fire inspectors. C. fire department personnel. D. water department personnel.

______15. In general, hydrants should not be spaced more than ___ feet (m) apart in high-value districts. (607) A. 100 (30) B. 200 (60) C. 300 (100) D. 400 (120)

______16. A basic rule is to locate a hydrant at ___ intersection. (607) A. every B. every other C. every third D. every fifth

______17. Intermediate hydrants may be required where distances between intersections exceed ___ feet (m). (607-608) A. 50 to 100 (15 to 30) B. 250 to 300 (75 to 100) C. 350 to 400 (105 to 120) D. 450 to 500 (135 to 150)

______18. Which of the following is NOT a factor affecting hydrant location and spacing? (608) A. Building densities B. Types of construction C. Types of occupancies D. Amount of pedestrian traffic

Objective 3: Summarize potential problems to look for when inspecting fire hydrants.

______19. Hydrant testing and inspections are the responsibility of: (608) A. contractors. B. fire department personnel. C. water treatment inspectors. D. water department personnel.

______20. Which of the following is NOT something to look for when inspecting fire hydrants? (608-609) A. Painted hydrants B. Missing outlet caps C. Outlets that face the wrong direction D. Insufficient distances between buildings and hydrants

Objective 4: Explain the process of fire hydrant testing.

______21. Which of the following statements about fire hydrant testing is MOST accurate? (609) A. Fire hydrants should be tested on a monthly basis. B. Fire hydrants should be tested on a quarterly basis. C. Fire hydrant testing is always performed by the fire department. D. Many departments are no longer responsible for the testing of hydrants.

______22. When conducting a flow test on a hydrant, remove ___ outlet cap(s). (609) A. one B. two C. three D. all

______23. After inspecting outlet caps during a flow test, replace all caps except: (609) A. the top outlet cap. B. one 2½-inch (65 mm) cap. C. two 2½-inch (65 mm) caps. D. the outlet cap closest to the pumper.

______24. During a flow test, a cap-type pressure gauge should be connected to: (609) A. the pumper. B. the hose nozzle. C. the hydrant to be tested. D. a second hydrant nearby.

______25. During a flow test, the test hydrant should be turned on to ___ pressure. (610) A. one-quarter B. half C. three-quarter D. full

______26. Residual pressure should be recorded from: (610) A. the pumper. B. the hose nozzle. C. the second hydrant. D. the hydrant to be tested.

Objective 5: Discuss alternative water supplies.

______27. Which of the following is NOT an alternative water supply source? (610) A. Lakes B. Ponds C. Swimming pools D. Water treatment plants

______28. Which of the following is the definition of drafting? (610) A. Drawing water from a pumper to supply a hoseline B. Drawing water from a static source to supply a pumper C. Drawing water from a portable tank to supply a hydrant D. Drawing water from a static source to supply a hydrant

______29. A minimum of ___ inches (mm) of water above and below a hard intake strainer is usually needed for it to function properly. (611) A. 12 (300) B. 24 (600) C. 36 (900) D. 48 (1 200)

______30. Which kind of strainers can draft water from more shallow sources? (611) A. Intake B. Drafting C. Floating D. Underground

______31. Dry hydrants are installed at ___ to increase the water supply available for firefighting. (611) A. static water sources B. water treatment plants C. residential swimming pools D. wastewater treatment facilities

______32. Dry hydrants are constructed of: (611) A. copper. B. cast iron. C. aluminum. D. steel or PVC pipe.

______33. Dry hydrants are designed to supply at least ___ gpm (L/min). (611) A. 500 (2 000) B. 1,000 (4 000) C. 1,500 (6 000) D. 2,000 (8 000)

Objective 6: Discuss rural water supply operations.

______34. Which of the following is the definition of a water shuttle? (612) A. Drawing water from a pumper to supply a hoseline B. Drawing water from a static source to supply a pumper C. Hauling water from a portable tank to the fire D. Hauling water from a supply source to portable tanks

______35. Water shuttles are recommended for distances greater than ___ mile(s) (km) or greater than the fire department’s capability of laying supply hoselines. (612) A. ½ (0.8) B. 1 (1.6) C. 1½ (2.4) D. 2 (3.2)

______36. Which of the following is NOT a critical element of a water shuttle? (612) A. Traffic control B. Hydrant operations C. Fast-fill and fast-dump capabilities D. An Incident Commander at both fill and dump sites

______37. Which of the following is NOT a key component of a water shuttle? (612) A. Fill apparatus at the fill site B. Vacuum tankers at the fill site C. Attack apparatus at the dump site D. Water tenders to haul water from the fill site to the dump site

______38. The dump site of a water shuttle is generally located: (612) A. near the fire or incident. B. near the static water source. C. as close to the station as possible. D. between the fill site and dump site

______39. Portable tanks range from ___ gallons (L) upward. (613) A. 250 (1 000) B. 500 (2 000) C. 750 (3 000) D. 1,000 (4 000)

______40. Portable tanks may use ___ to transfer water from one tank to another. (613) A. drain fittings B. discharge lines C. hard sleeve hose D. jet siphon devices

Fire Protection Publications Chapter Test Oklahoma State University 12-8 Firefighter I Water Supply ______41. Which of the following is NOT a way in which water tenders unload? (615) A. Jet dumps B. Relay pumps C. Apparatus-mounted pumps D. Gravity dumping through large dump valves

______42. According to NFPA® 1901, water tenders on level ground should be capable of dumping or filling at rates of at least ___ gpm (L/min). (615) A. 250 (1 000) B. 500 (2 000) C. 750 (3 000) D. 1,000 (4 000)

______43. Which of the following may be used when the water source is close enough to the fire scene that water shuttles are not necessary? (616) A. Relay pumping B. Water shuttles C. Gravity dumps D. Jet siphon devices

______44. Which of the following is NOT a factor in determining how many pumpers are needed for a relay? (616) A. Size of hose available B. Volume of water needed C. Amount of hose available D. Distance between the station and the fire scene

______45. Which apparatus should be located at the water source? (616) A. Apparatus with largest gravity dump B. Apparatus with largest portable tank C. Apparatus from nearest fire department D. Apparatus with greatest pumping capacity

Fire Protection Publications Chapter Test Oklahoma State University 12-9