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Rescue Swimmer Lanz 14 > LRU-25 and LRU-33 > Flashcards

LRU-25 and LRU-33 Flashcards

1
Q

Raft inspections LRU -25

A
  1. visual inspect every 6 months
  2. leak check 2.0psi
  3. 15 min stab
  4. 1hr leak test on boarding and support tube
  5. 2hr leak test on upper and lower tube
  6. 60 second to inflate fully on functional
  7. functional every 36 months or every 3rd leak test
  8. shop air 40psi
  9. after packing allow to sit min 1 hour max 72 hours
  10. leak test every 360 days

CGTO PG-85-00-310-A 2-31

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2
Q

Raft bottle specs

A
  1. hydro date 3 years M13520.1C
  3. torque seal in 2 places: F900 swivel junction on Y-fitting and inflation valve bottle/body junction point.
  4. pressure in bottle 3160 psi+- 100psi at 70 F +- 5 F
  5. CO2- 2.5lbs in cyl. after it should be 2.2+- .01 lbs record weight
  6. fill nitrogen to 3300-3400psi do not exceed 3400psi
  7. after 3 hr cooling period 3160+- psi

M13520.1C 2-15,16

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3
Q

How much pull force is required to actuate the inflation valve both rafts

A

6-15 lbs

CGTO PG-85-00-310-A 2-32

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4
Q

What is the normal and overload capacities

A

Normal- 6 persons
Overload- 9 persons

M13520.1C 2-13

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5
Q

How many pounds of CO2 can pass through the purifier cartridges before they shall be replaced

A

250 lbs

M13520.1C 2-16

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6
Q

What are the normal and overload capacities for the LRU-33 raft

A

Normal- 20 persons
Overload- 30 persons

13520.1C 2-5

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7
Q

What do the C-130J and H use for wing installation cable assembly for the LRU-33

A

C-130J- left wing: red color code right wing: green
C-130H- left wing: red/white right wing:green/white

13520.1C 2-5

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8
Q

How much pull force is required to actuate the inflation valve

A

6-15 lbs

CGTO PG-85-00-310-A 2-32

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9
Q

What is the normal and overload capacities

A

Normal- 6 persons
Overload- 9 persons

M13520.1C 2-13

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10
Q

How many pounds of CO2 can pass through the purifier cartridges before they shall be replaced

A

250 lbs

M13520.1C 2-16

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11
Q

What do you cover up with black pen in the rectangle on the LRU 25 raft container

A

over load capacity 9 persons and rotary wing

MPC 256204.0 p. 7

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12
Q

What is a caution when removing the Liferaft from the container

A

Inadvertent inflation

MPC 256204.0 p. 7

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13
Q

What size wrench is used to unscrew the chain connector attached to the inflation lanyard

A

7 mm

MPC 256204.0 p. 8

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14
Q

What is wrapped on the inflation hose attachment points on the inflation assembly discharge y fitting

A

black electrical tape

MPC 256204.0 p. 8

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15
Q

What do you apply to the swivel junction point on the inflation assembly discharge Y fitting and the inflation valve bottle fitting/body junction point

A

Thin bead of Torque seal F-900

MPC 256204.0 p. 8

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16
Q

Where do you place the heaving ring for the LRU 25

A

On top of a Hank and on top of INFERIOR life line(blue color)

MPC 256204.0 p. 9

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17
Q

What do you apply to the lower half of the threads of the hand pump

A

Anaerobic single-component adhesive
Loctite 242 blue type 2

MPC 256204.0 p. 10

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18
Q

What do you tighten the topping off valve of the hand pump with

A

27 mm wrench

MPC 256204.0 p. 10

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19
Q

What do you attach to the survival items equipment retaining line

A

A locally manufactured streamer marked “tie to survival equipment bag” using a bowline

MPC 256204.0 p. 15

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20
Q

What do you secure the cylinder in while not attached to the life raft

A

Chain vise

MPC 256204.0 p. 8

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21
Q

How many inches of the survival equipment retaining line should be left in the survival equipment compartment

A

12 in

MPC 256204.0 p. 17

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22
Q

What can the shop air be regulated to temporarily to open the check valve in the inflation hose?

A

50 psig

MPC 256204.0 p. 26

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23
Q

What pressure should the opening pressure of the PRV valve not exceed

A

2.9 psi

MPC 256204.0 p. 26

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24
Q

What pressure should the PRV fully close

A

No less than 2.1 psi

MPC 256204.0 p. 26

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25
Q

How many times can a PRV fail and what must be done afterwards

A

After the 2nd failure return raft and inflation assembly condition code F to ALC

MPC 256204.0 p. 26

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26
Q

What tool is used to remove the PRV valve

A

Mirada valve, B-51025

MPC 256204.0 p. 27

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27
Q

There shall be no seam lifts over ___ on new rafts

A

3/16 in

MPC 256204.0 p. 29

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28
Q

What is the max air pressure for leak test and what is the min air pressure it can drop to

A
  1. 0 max
  2. 8 min

MPC 256204.0 p.28-30

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29
Q

What size on the vernier caliper should the battery thickness measure

A

0.438 in +- 0.010

MPC 256204.0 p. 30

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30
Q

What goes inside the 10 in food saver bag

A

4 repair plugs, pliers, and instruction card

Vacuum seal on setting 3

MPC 256204.0 p. 31

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31
Q

How do you wash the Life raft container

A

Shall not be machine washed

Use a solution of clear ivory brand detergent and water(1 oz to 1 gal of water), brush with soft bristle brush

MPC 256204.0 p. 33

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32
Q

Wha size crow foot is used to remove an inflation valve

A

1-1/8 in with a 6 in extension and ratchet

MPC 256204.0 p. 34

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33
Q

What do you lube the cylinder head o ring with

A

Dow Corning Molykote, DC-55M

MPC 256204.0 p. 36

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34
Q

What do you use to screw inflation assembly onto cylinder

A

1-1/8 in crow foot, 6 in extension with ratchet and torque to 252-276 in pound or 21-23 foot pounds

MPC 256204.0 p. 36

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35
Q

What aircrafts is the raft used on

A

65, 60, 25, 144

M13520.1C P 2-13

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36
Q

What is the hydro date intervals for the raft bottle

A

Hydro every 3 years M13520.1C p. 2-15

The cylinder shall have a service life of 3 hydrostatic tests or a life limit of 15 years from the date of manufacture, whichever comes first

MPC 256204.0 p 24

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37
Q

What is the breaking strength of the week link attaching the mooring/retention line to the liferaft webbing when equipped on the C-144A

A

300 lbs

CGTO 1C-144A-1 p 1-150

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38
Q

What is the volume of the LRU-33

A

86.3 cubic ft

M13520.1C p 2-5

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39
Q

What is the operating pressure of the LRU-33

A

1.5-3.6 psi

M13520.1C p 2-5

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40
Q

What color cable assembly does the C-130H use

A

Left wing- red/white color
Right wing- green/white color

M13520.1C p 2-5

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41
Q

What color cable assembly does the C-130J use

A

Left wing- red
Right wing- green

M13520.1C p 2-5

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42
Q

How many subsystems make up the LRU-33

A

5

M13520.1C p 2-5

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43
Q

What pressure will the LRU-33 bottle rupture disc rupture at

A

4500-4950 psi

M13520.1C p 2-7

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44
Q

What is the combination weight for the bottle of CO2 and nitrogen

A

CO2- 3.06 lbs
Nitrogen- 5.7 lbs

M13520.1C p 2-7

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45
Q

What is the volume of the LRU-25

A

26.8 cubic ft

M13520.1C p 2-13

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46
Q

What is the operating pressure of the LRU-25

A

1.3-4.7

M13520.1C p 2-13

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47
Q

How big is the rubber toss ring

A

6 in

M1520.1C p 2-13

48
Q

How often is the LRU-25 cylinder due for a hydro test

A

3 years

M13520.1C p 2-15

5

PG 85-00-310A p 2-31

49
Q

To ensure a minimal amount of moisture input to inflation assemblies, all CO2 shall pass through ____ purifier assemblies connected in series. The purifier cartridges in each assembly shall be replaced after ____ pounds of CO2 have passed through cartridges

A

2
250 pounds

M13520.1C p 2-16

50
Q

What is the max pressure for compressed air dryer

A

150 psi

M13520.1C p 2-16

51
Q

Approximately every ____ minutes, the two columns (desiccant material) automatically reverse in function. At change over,the air in the desorption column is vented to the atmosphere.

A

2

M13520.1C p 2-16

52
Q

The compressed air dryer desiccant material typically exceeds 10,000 hours (3½ years, 8 hours per day). The primary indication that the desiccant requires changing is the CO2/N2 pump freezing during operation. The dryer filters typically last how long? Before the system is used, check for debris or liquid in the filter bowls and clean as required to assure proper operation.

A

2 to 3 years

M13520.1C p 2-16

53
Q

What do you place the life raft manual in

A

10 x 10 in plastic bag

MPC 256204.0 LRU-25 p 8

54
Q

What do you place the sponge in

A

6 x 6 in plastic bag

MPC 256204.0 LRU-25 p 8

55
Q

How big is the piece of black electrical tape wrapped around the sharp edge of the tie wrap where it attaches to the nylon cord

A

2 in

MPC 256204.0 LRU-25 p 8

56
Q

How many wraps around the inflation handle do you wrap the nylon cord

A

3 times

MPC 256204.0 LRU-25 p 9

57
Q

What torque seal is used on the raft

A

F-900(primary) or VT202

MPC 256204.0 LRU-25 p 15

58
Q

What are signs of deteriorating fabric

A

Sour smell or signs or hardness or brittleness

MPC 256204.0 LRU-25 p 15

59
Q

How many pieces of retro are attached to raft

A

Upper tube- 6
Support tube- 6
Ramp- 3

MPC 256204.0 LRU-25 p 16

60
Q

Shop air may be temporarily adjusted to what psi to open check valve in the inflation hose

A

50 psi

MPC 256204.0 LRU-25 p 16

61
Q

What are the acceptable pressures for opening and closing pressure relief valve

A

1.1-2.9 psi

MPC 256204.0 LRU-25 p 16

62
Q

When inflating lower or upper tube for lower external POV test, pressure in lower tube will exceed what psi

A

5

MPC 256204.0 LRU-25 p 17

63
Q

What is the locator light battery thickness

A

Shall not exceed 0.438 in +- 0.010

MPC 256204.0 LRU-25 p 21

64
Q

What do you place the 4 repair plugs, pliers, and instruction card inside of

A

10 in length of food saver bag and seal on setting 3

MPC 256204.0 LRU-25 p 21

65
Q

What is the service life of cylinder of LRU-25

A

3 tests or 15 years from the DOM

MPC 256204.0 LRU-25 p 23

66
Q

What type of tools should be used for removing o rings

A

Brass or plastic

MPC 256204.0 LRU-25 p 24

67
Q

What is proper pressure

A

3160 +- 100

MPC 256204.0 LRU-25 p 25

68
Q

When taping the Y coupler in no case will the tape be permitted to extend beyond what thread

A

First thread

MPC 256204.0 LRU-25 p 26

69
Q

When charging the cylinder the CO2 flow rate shall not exceed what

A

0.05 pound per second

MPC 256204.0 LRU-25 p 27

70
Q

Rate of charge shall not exceed what when charging cylinder with nitrogen

A

50 psi

MPC 256204.0 LRU-25 p 29

71
Q

Fill cylinder with N2 not to exceed what psi

A

3400 psi

MPC 256204.0 LRU-25 p 29

72
Q

What is the cooling time period after cylinder is charged

A

3 hours

MPC 256204.0 LRU-25 p 30

73
Q

When topping off the cylinder what psi do you regulate shop air to

A

100-105 psi (the cart should read 100 psi)

MPC 256204.0 LRU-25 p 30

74
Q

What is the shelf life of a chemlight

A

48 months

Qty- 6: 6 in

MPC 256204.0 LRU-25 p 31

75
Q

What is the shelf life for survival rations

A

6.5 years

Qty- 3

MPC 256204.0 LRU-25 p 31

76
Q

How many water packs are installed in the raft

A

18 4.5 oz packs with 5 year shelf life

MPC 256204.0 LRU-25 p 31

77
Q

What is the shelf life for the Mariner F-20 MD3

A

6 years

MPC 256204.0 LRU-25 p 32

78
Q

What size sunburn preventive is installed in the raft

A

4.5 oz spf-30 secured in a 6 x 6 in interlocking seal bag

MPC 256204.0 LRU-25 p 32

79
Q

How many chapsticks are installed in raft LRU- 25

A

3, 6 x6 in bag

MPC 256204.0 LRU-25 p 32

80
Q

What size interlocking seal bag is the Mylar space blanket placed in

A

12 x 12 in

MPC 256204.0 LRU-25 p 32

81
Q

For LRU- 25 use in the H60 the survival pack should be what size LRU- 25

A

4 high x 22 in long roll the opening of the bag 3-4 times

MPC 256204.0 LRU-25 p 32

82
Q

What size hank is the sea anchor line faked into LRU-25

A

18 in then fold anchor in half length wise

MPC 256204.0 LRU-25 p 34

83
Q

How many handles are attached to boarding ramp

A

3

MPC 256204.0 LRU-25 p 35

84
Q

What is the width of the 25 when it is ready to be stowed in the box

A

22 in +- 1

MPC 256204.0 LRU-25 p 37

85
Q

How much below the packing container should the raft be after being ratcheted

A

1 in

MPC 256204.0 LRU-25 p 40

86
Q

How many angle brackets are used under the packing straps

A

MPC 256204.0 LRU-25 p 40

87
Q

What is the wait time after packing the raft in the packing container before getting it into the raft container

A

No wait time

MPC 256204.0 LRU-25 p 41

88
Q

What size are the 2 type 3 nylon cords used for lacing the outside of the container

A

16 ft

MPC 256204.0 LRU-25 p 43

89
Q

LRU-25 should inflate to shape in how long

A

60 seconds or less

MPC 256204.0 LRU-25 p 46 Note

90
Q

How much does the LRU-25 cylinder weigh

A

17.05 lbs

MPC 256204.0 LRU-25 p 47 chart

91
Q

How many places on the cylinder inflation assembly do you apply torque seal

A

4 places

MPC 256204.0 LRU-25 p 53

92
Q

What size is the grommet on the pull test cable webbing

A

0 spur

MPC 256420.0 LRU-33 p 6

93
Q

How often is the functional test due on the LRU-33

A

60 months

MPC 256420.0 LRU-33 p 6

94
Q

How long is the fluorescent survival equipment retaining line

A

15 ft

MPC 256420.0 LRU-33 p 8

95
Q

How long do allow adhesive to dry after applying to retro attached to tubes and underside of floor

LRU-33

A

Dry for 10 minutes, reapply and let cure for 4 hours

MPC 256420.0 LRU-33 p 16

96
Q

What is the leak test time period

A

4 hours

MPC 256420.0 LRU-33 p 17

97
Q

What is the shelf life of the inflation reservoir (cylinder)

A

5 hydro tests or 25 years

MPC 256420.0 LRU-33 p 18

98
Q

LRU-33

How many MK-124 are installed

A

4 each

MPC 256420.0 LRU-33 p 20

99
Q

LRU-33

How many 6 in chemlights are installed

A

4 orange each

MPC 256420.0 LRU-33 p 20

100
Q

LRU-33

How many survival rations are installed

A

10 each

MPC 256420.0 LRU-33 p 20

101
Q

LRU-33

How many signal mirrors are installed

A

2 each

MPC 256420.0 LRU-33 p 19

102
Q

LRU-33

How many MK-79 kits are installed

A

2 each

MPC 256420.0 LRU-33 p 19

103
Q

How many water packs are installed

A

24 each

MPC 256420.0 LRU-33 p 20

104
Q

LRU-33

What is the shelf life of the SEAPAK crew

A

5 years

MPC 256420.0 LRU-33 p 21

105
Q

LRU-33

How many water storage bags

A

4 each

MPC 256420.0 LRU-33 p 21

106
Q

How many spf 30 sunburn preventatives

A

2 each

MPC 256420.0 LRU-33 p 21

107
Q

LRU-33

How many chapsticks

A

10 each

MPC 256420.0 LRU-33 p 21

108
Q

LRU-33

How many combat casualty blankets

A

6 each

MPC 256420.0 LRU-33 p 21

109
Q

LRU-33

How many sponges are installed

A

2 each

MPC 256420.0 LRU-33 p 21

110
Q

LRU-33

How many first aid kits are installed

A

3

MPC 256420.0 LRU-33 p 22

111
Q

LRU-33

To prevent chaffing how much black electrical tape is wrapped on inflation hose fittings

A

2 turns 6 total

MPC 256420.0 LRU-33 p 23

112
Q

LRU-33

Upper and lower tubes shall have a vacuum of at least ____ inches of mercury

A

22 (max 25)

MPC 256420.0 LRU-33 p 23

113
Q

How long do you allow the life raft to remain undisturbed before removing from the packing box to place in container

A

Minimum 24 hours not to exceed 72 hours

MPC 256420.0 LRU-33 p 26

114
Q

How quickly should the LRU-33 inflate to shape

A

60 seconds

MPC 256420.0 LRU-33 p 29

115
Q

How often shall reconditioning go the cylinder valve head be accomplished

A

60 months

MPC 256420.0 LRU-33 p 31

116
Q

Raft modifications and components

A
  1. inflation lanyard 12ft 10in+- 1in. MPC 256204.0 p. 9
  2. 75ft tether line. MPC 256204.0 p. 9
  3. 15ft type 3 survival bag retaining line
  4. 50ft sea anchor kept in 18in hanks
  5. retaining strap is a 3 part system: made up of a frangible link, short and long strap
  6. retro tape- 6 2x12in upper tube. 6 2x12in support tube. 3 2x9in boarding ramp
  7. canopy contains 18 (2x12in) pieces of retro

Rescue Swimmer Lanz 14 (55 decks)

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