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13-1-6.4-1 Ch. 3
Oxygen Equipment
| Question | Answer |
|---|---|
| Aircraft oxygen systems installed in naval aircraft fall into one of the following categories: 1. ______ Oxygen systems: a. low pressure (0-500psig), high pressure (0-1800psig), and reduced high pressure 2. ______ oxygen systems | Gaseous and Liquid |
| Diluter demand type regulators are used on ____ oxygen systems, while the automatic positive pressure diluter demand type regulator are used with either gaseous or liquid oxygen systems | Gaseous |
| What is the MIL SPEC for O2 cleaning compound? | MIL-C-81302 |
| Only oxygen conforming to MIL-PRF-______ Type 1 shall be used in aircraft gaseous oxygen systems. | 27210 |
| Aviator's breathing oxygen supply cylinders can be readily identified by their ____ color and ___ inch wide white band around the upper circumference of the cylinder | Green color and 3 inch wide |
| What shall be stenciled in white parralel to the longitudinal axis and on diametrically opposed sides in letters 1 3/4 to 2 inches high. | OXYGEN, AVIATOR'S |
| The pressure in oxygen storage cylinders which service/replenish aircraft oxygen supply cylinders should not fall below ___ psig | 50 psig |
| A fully oxygen cylinder is a cylinder which is charged to its rated pressure. With respect to a high pressure oxygen cylinder, ____ psig is considered full. | 1,800 psig |
| Hydrostatic test interval for P-3 fixed installed oxygen cylinders shall not exceed __ years. In all other cases, a hydrostatic test is good for how long? | 8 / 5 |
| Always assume that frosted or uninsulated parts of liquid oxygen equipment are approximately _____ degrees F | -297 degrees F |
| The expansion ratio of LOX is what? If this evaporation and expansion were to take place in a confined space, explosive pressure will be in excess of _______ psig | 862:1 / 12,000 |
| Only liquid oxygen conforming to MIL-PRF-______ Type II shall be used in aircraft liquid oxygen systems. | 27210 |
| A maximum of ___ LOX converters can be drained at one time | 2 |
| Keep open flames at least ___ feet away from oxygen storage tanks or oxygen equipment. | 100 feet |
| Liquid oxygen containers must be stored apart from containers of other gases or liquids and must not be stored within ___ feet of flammable material of any kind | 50 feet |
| Use only ___-____ ______, Type 1, Class 1, Grade B for purging oxygen systems | Oil-Free Nitrogen |
| Oil Free Nitrogen bottles are ____ in color and have 2 ___ inch wide black bands | Grey / 3 inch |
| When purging, oil-free nitrogen must be heated and passed through the system at maximum pressure which is ______psig and at a minimum temperature of 90 degrees F for ___ minutes | 120 psig / 30 minutes |
| LOX converters have inspection interval dates of what? | 231 days |
| Operation of the Automatic Positive Pressure Diluter Demand Regulator at altitudes up to what? | 28,000 to 32,000 feet |
| How long can it take for an OBOGS caution to occur while holding the pneumatic BIT button? | 65 Seconds |
| Oxygen systems regulate gaseous oxygen from what psi to what safe operating range? | 1,800 psi to 60-70 psi |
| Gaseous Oxygen falls into what three categories? | Low Pressure (0-500 psig) High Pressure (0-1800 psig) Reduced High Pressure |
| Gaseous Oxygen Systems are used in what type aircraft? | Multiplace aircraft where space and weight considerations are less important items |
| What type aircraft are Liquid Oxygen Systems used in? | Aircraft where space and weight consideration is paramount |
| Liquid oxygen systems consist of what parts? | Converter Filler valve Heat exchanger Control valve Releif valve Tubing Regulators and other cockpit instruments |
| Diluter Demand Type Regulators are used in some aircraft with what systems? | Gaseous Oxygen Systems |
| By placing the diluter lever knob to the normal position, an air-oxygen mixture is supplieds upon demand up to what alttitude? A) 32,000-45,000 feet B) 28,000-32,000 feet C) 25,000-32,000 feet | B) 28,000-32,000 feet |
| At approximately _________ feet ambient air is shut off, and the user receives 100% oxygen? A) 25,000 feet B) 45,000 feet C) 31,000 feet D) 32,000 feet | D) 32,000 feet |
| Automatic Positive Pressure Diluteer Demand Regulators are used in aircraft with what type systems? A) Gaseous B) Liquid C) Gaseous or Liquid | C) Gaseous or Liquid |
| Positive Pressure Regulators at 28,000-32,000 feet are the same as what regulator? | Diluter Demand Regulator |
| Above what alttitude does the Positive Pressure Diluter Regulator add oxygen at a posiutive pressure to the mask? A) 25,000 feet B) 30,000 feet C) 35,000 feet D) 40,000 feet | B) 30,000 feet |
| Service ceiling of the Positive Pressure Diluter Regulator is what altrittude? A) 40,000 feet B) 45,000 feet C) 50,000 feet D) 55,000 feet | C) 50,000 feet |
| Pressure Diluter Regulator shall not be used above what altittude except for short periods? A) 40,000 feet B) 42,000 feet C) 43,000 feet D) 44,000 feet | C) 43,000 feet |
| Miniature Regulators do what? | reduce and regulate supply pressure, and deliver 100% oxygen |
| A safety feature on the Mini Regulator automatically maintains a pressure of what amount? 0 to 2.5 H2O at all altitudes up to and including what altitude? A)34,000 B)35,000 C)54,000 | 34,000 feet |
| In the mini Regulator the pressure breathing feature maintains a positive pressure in the mask of up to what? 20.0 in H2O at altitudes between what and what? A)30,000 and 50,000 B)35,000 and 50,000 C)35,000 and 55,000 | 35,000 and 50,000 feet |
| Miniature Regulators can be used up to how many feet? A) 41,000 B) 43,000 C) 45,000 | 43,000 |
| Only oxygen conforming to ________ shall be used in aircraft gaseous oxygen systems. A) MIL-PRF-27312 Type I B) MIL-PRF-27210 Type I C) MIL-PRF-27215 Type I | MIL-PRF-27210 Type I |
| How can you identify Aviator oxygen supply cylinders? | Green 3 in white band around upper cylinder |
| What shall be stenciled in white letters 1 3/4 to 2 in high | OXYGEN AVIATORS |
| Pressure in oxygen cylinders shall not fall below what amount? A) 50 psig B) 55 psig C) 60 psig | 50 psig |
| All cylinders which have a pressure below _______ shall be removed from service for vacuum and heat drying/hot nitrogen gas drying A) 5 psig B) 10 psig C) 15 psig | 15 psig |
| Hydrostatic test interval for P3 fixed installed oxygen cylinders shall not exceed ______ years. A) 4 B) 5 C) 8 | 8 |
| Never refill a cylinder that has reached what? | 5 year hydro test |
| Always assume that frosted or uninsulated lines are at what temp? A) -197 degrees F B) -235 degrees F C) -297 degrees F | -297 degrees F |
| One volume of liquid oxygen will expand to ______ volumes of gaseous oxygen. If this happens in confined space it can explode. A) 10,000 B) 11,000 C) 12,000 | 12,000 |
| Only liquid oxygen conforming to ___________ shall be used in aircraft liquid oxygen systems. A) MIL-PRF-27211 TYPE II B) MIL-PRF-27210 TYPE II C) MIL-PRF-27205 TYPE II | MIL-PRF-27210 TYPE II |
| LOX storage shelves shall not be less then ______ high and no less then _______ deep? | 17 inch 18 inch |
| LOX shelters shall be painted what color with what color reflective tape? | white paint green tape |
| Letters on LOX shelter shall be no less then _________ high. | 2 inch |
| Purge oxygen systems with what? A) oil free nitrogen type II class I Grade B B) oil free nitrogen type I class II Grade B C) oil free nitrogen type I class I Grade B | oil free nitrogen type I class I Grade B |
| Oxygen test stands and purging equipment use only nitrogen from what color cylinders and marked with what? | gray paint NITROGEN OIL FREE in white letters Two 3-in wide black bands |
| When purging oxygen systems you pass a maximum pressure ___________psig and a minimum temp of _______ degrees for _____ min. | 120 psig 90oF 30 Min |
| Inspections on LOX converters are done how often? | 231 days |
| ARO Lox converters are purged at ambiant temp for a period of ______-min. A) 50 B) 60 C) 70 | 60 |
| Oxygen shops should be kept at what temp? | 65-75F |
| Oxygen is about_________ times densor then air? A) 5% B) 10% C) 15% | 10% |
| Oxygen shops shall be exausted how often for shore and how often for ship | 3 per hour shore 2 per hour ship |
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teaguemonie
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