ASSIGNMENT 4 Textbook Assignment: “JP-5 Afloat Below Deck Systems and Operations (continued),” and “JP-5 Afloat Flight Deck Systems and Operations,” chapters 4 and 5, pages 4-65 through 5-16. 4-1. 4-2. 4-3. 4-4. What type of gage is normally installed on the suction side of a pump? 1. Simplex 2. Compound 3. Differential 4. Duplex Which type of tanks, located between voids, are an integral part of the ship’s underwater protective system? 1. Wing 2. Deep centerline 3. Double-bottom 4. Peak Why are twin wing tanks emptied and filled as a unit? 1. The rate of flow is increased 2. To preserve the list and trim of the ship 3. The rate of flow is decreased 4. To lessen the chance of contamination The top of a double-bottom tank is also the 1. outer shell of the ship 2. vertical bulkhead of the pumproom 3. inner skin of the ship 4. deck of the bilge 4-5. 4-6. 4-7. 4-8. The JP-5 storage tanks are used for bulk storage of JP-5. What is the difference, if any, in JP-5 in a service tank compared to JP-5 in a storage tank? 1. It passed through a filter or centrifugal purifier 2. It was filled directly from the refueling station downcomer 3. It contains clean JP-5 defueled from defueled aircraft 4. None What device prevents air pressure from building up or a vacuum from forming in a JP-5 tank when the tank is being emptied or filled? 1. A service suction pipe 2. A transfer suction pipe 3. An air escape riser 4. An overflow line Why should you be concerned about ship’s side cleaners spray painting near tank air escape vents? 1. The paint could get in the line and contaminate the fuel 2. The paint will mix with the JP-5 and lower its flash point 3. The paint could clog the flame arrester and block the flow of air 4. The paint will dissolve the grease applied during PMS What device is installed in the overflow line to prevent overflow from the overflow tank going into another storage tank? 1. Globe valve 2. One-way check valve 3. Gate valve 4. Butterfly valve 24