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ESWS > DC, CHT, & Ballasting > Flashcards

DC, CHT, & Ballasting Flashcards

1
Q

What is CHT?
What is the communication circuit?

A
  • CHT is the system in which sewage is collected in a tank where it is held on board or transferred overboard or to a sewage facility
  • CHT is the system. Sewage is what flows through the CHT system
  • X52J
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2
Q

What is Soil?
What is Waste?

A
  • Soil: Sewage: Black water. The waste of human origin from water closets (toilets) or urinals
  • Waste: Grey water. Waste water. Discarded water from deck drains, lavatories, showers, dishwashers, laundries, garbage grinders, and medical facilities.
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3
Q

Where are the sewage tanks onboard USS Harpers Ferry located?

A
  • Total of seven tanks
  • Main CHT pump room 5-33-1-Q (14029 gallon)
  • Port CHT pump room 3-107-2-Q (650 gallon)
  • Starboard CHT pump room 3-107-1-Q (650 gallon)
  • One in each main space and aux space (15 gallon)
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4
Q

What are the three modes of CHT?

A
  • Inport: Sewage and grey water are collected in main CHT. Pump Controller switches are placed in Auto for discharge to a shore/ barge facility
  • Transit: While transiting a restricted zone, sewage is diverted to the tank and Grey water is diverted to the overboard position. Pump controller switches are in the OFF position
  • At Sea: Sewage and Grey water are diverted overboard. Pump Controller switches are place in the AUTO position
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5
Q

What is H2S?

A
  • H2S is an odorless and colorless gas that may cause serious injury or death. Poisoning usually occurs from inhalation
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6
Q

Sewage Clean up?

A
  • If a Sewage Spill occurs clean the area with hot potable water, stock detergent and Betadine/Wescodyne/Povidone-Iodine Solution.
  • Personal Protective Equipment (PPE) : Disposable Coveralls, goggles, Faceshield, Rubber Boots, Laundry Bags, Impermeable Rubber Gloves
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7
Q

What is ballasting?
What is deballasting?

A
  • Ballast: to expertly sink the ship for the purpose of Stability due to heavy seas, Amphibious Operations, Low Bridge or we have run a ground
  • DEBALLASTING IS WHEN WE RAISE THE SHIP. PURPOSE FOR RAISING SHIP; SHALLOW WATER, AMPHIB OPS, BETTER FUEL CONSUMPTION
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8
Q

How many Ballast tanks are there? And how are they drained/ filled?

A
  • 85 BALLAST TANKS ONBOARD. 69 FIFTH AND SIXTH DECK TANKS, 16 THIRD DECK TANKS
  • 3RD DECK TANKS ARE FIRE MAIN FILLED AND GRAVITY DRAINED DUE TO BEING ABOVE THE WATERLINE.
  • 5TH AND 6TH DECK TANKS ARE BELOW THE WATERLINE SO THEY ARE GRAVITY FILLED AND BLOW OUT WITH DBAC’S.
  • TO FILL 5TH AND 6TH DECK TANKS YOU NEED TO OPEN SEA VALVE, SHUT BLOW, AND OPEN VENT.
  • TO DRAIN 5TH AND 6TH DECK TANKS TO NEED TO OPEN BLOW, SHUT VENT, OPEN SEA AFTER PRESSURE BUILD UP
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9
Q

How many HPU’s are onboard and where are they?
What is the bullet?
What do HPU’s operate?

A
  • 5 HYDRAULIC POWER UNITS ONBOARD (HPU). 1 ON REFFER DECKS, 2 IS BY MAIN 1’S ESCAPE TRUNK, 3 IS BY DEGAUSSING, 4 IS OUTSIDE REPAIR 3, 5 IS INSIDE STBD MACHINARY ROOM
  • THE BULLET” IS THE SERVICE TANK TO HPU’S AND IT IS LOCATED IN HORSESHOE PWAY STBD SIDE
  • FM FILL, SEA VALVE, AND GRAVITY DRAIN VALVES.
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10
Q

How many DBAC’s are onboard?
Where are they located?
How much PSI?
Can it be started from ballast control?

A
  • 4 DEBALLASTING AIR COMPRESSORS (DBAC) ONBOARD. 1 AND 2 ARE IN FWD AC, 3 AND 4 ARE IN AFT DEBAC (STBD FANTAIL). NEED 8-12 PSI TO BLOW TANK. CANNOT START FROM BALLAST CONTROL ONLY CHANGE MODE OR TURN OFF.
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11
Q

Where is ballast control?
What is a list?

A
  • BALLAST CONTROL IS NEAR STBD QUARTERDECK.
  • LIST IS DEGREE FROM PORT TO STBD. TRIM IS FROM FWD TO AFT. 5 DEGREES IS ABNORMAL
  • Both are read from a clinometer. just depends on position
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12
Q

What is draft?

A
  • How deep the ship sits in water and can be read on the pier with numbers on the side of the ship. bottom of the number is 6 inches. Top of the number to bottom of the next number is 6 inches
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13
Q

How much water does an LCU need?

A
  • 6-8 feet on the well
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14
Q

How much water does an LCAC need?

A
  • 0-6 inches
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15
Q

How much water does an AAV (recovering) need?

A
  • 3-5 feet
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16
Q

How much water does an AAV (launching) need?

A
  • 1 foot
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17
Q

What are the four pipe patching methods?

A
  • EWARP
  • Soft patch
  • Jubilee
  • Banding Patch
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18
Q

What does EWARP stand for

A
  • Emergency water actuated repair patch
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19
Q

What PSI can EWARP hold?

A
  • 150psi
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20
Q

What systems cannot be patched with EWARP?

A
  • Potable water
  • Fuel
  • Steam
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21
Q

What does the soft patch consist of?

A
  • Wedge
  • Gasket
  • Marlin
  • Oakum
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22
Q

What PSI can a soft patch hold?

A
  • 150psi
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23
Q

What PSI can a jubilee patch hold?

A
  • 100psi
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24
Q

What’s unique about the jubilee patch?

A
  • Can be applied to pressurized systems
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25
Q

What are the components of a banding patch?

A
  • Gasket
  • Steel shole
  • banding
  • banding clip
  • cutter
  • banding tool
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26
Q

What PSI can a banding patch hold?

A
  • 150psi
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27
Q

What is the minimal number of bands required?

A
  • 3
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28
Q

What are the 5 portable dewatering equipment?

A
  • S-type
  • peri jet
  • derbishire
  • ESP
  • P-100
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29
Q

What portable educators are operated by firemain?

A
  • S-type
  • peri jet
  • derbishire
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30
Q

What type of power is used to operate the ESP?

A
  • 440v
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31
Q

Who is authorized to activate the ESP?

A
  • Repair electrician
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32
Q

What cannot be passed through the ESP?

A
  • Fuel
  • Hot water
  • Debris (Strainer)
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33
Q

How many P-100 pumps do we have?

A
  • 3
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34
Q

Where are the P-100 pumps located?

A
  • Boat deck, STBD & Port quarterdeck
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35
Q

What type of pump is the P-100?

A
  • Centrifugal pump
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36
Q

What is the fuel tank capacity on the P-100?

A
  • 1.45 Gallons
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37
Q

What is the rated capacity of the P-100?

A

-20ft suction lift, 100 gpm@83psi

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38
Q

What is the primary purpose of the P-100?

A
  • Primary: Firefighting
  • Secondary: Dewatering
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39
Q

How many spaces are covered by halon?

A
  • 10
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40
Q

What spaces are covered by halon?

A
  • AMR1, AMR2, MMR1, MMR2, FLAM1, FLAM2, PAINT MIX, TROOP FLAM, JP-5 Pump room, Hazardous material ready issue
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41
Q

What actuates halon?

A
  • 5Ibs CO2 bottle
42
Q

What the pressure switches that’s actuated by C02?

A
  • Lights and horns, Ventilation and dampeners, time delay
43
Q

What are the three colors of lights used by halon?

A
  • White (power available)
  • Amber (actuated)
  • Red (Halon discharged)
44
Q

What state is halon in the bottles?

A
  • Liquid state pressured with nitrogen (600psi)
45
Q

What are the time delays for halon?

A
  • 30+/-5 sec (unmanned)
  • 60+/-10 sec (manned)
46
Q

What is the purpose of the time delay?

A
  • To allow for the vent damners to close
  • for personnel to evacuate the space
47
Q

how long does it take halon to cover the space?

A
  • Within 10 seconds
48
Q

What is the scientific name for halon?

A
  • bromotrifluoromethane
49
Q

What type of firemain do we have?

A
  • Double horizontal loop
50
Q

What deck are the loops on?

A
  • 2nd deck
  • 03 level
51
Q

How many zebra valves isolate the system?

A
  • 4
52
Q

Where are the zebra valves located?

A
  • repair 2
  • AFT of armory 2nd deck
  • 03 marine berthing
  • FWD repair 4
53
Q

How many fire pumps do we have?

A
  • 7
54
Q

What does AFFF stand for?

A
  • Aqueous Film Forming Foam
55
Q

How many AFFF stations do we have?

A
  • 4
56
Q

Where are the AFFF stations located?

A
  • 2nd deck (1-AFT A/C, 2–AFT MMR1 escape trunk, 3-FWD armory, 4FWD ships laundry)
57
Q

how large are the AFFF tanks?

A
  • 800 gallons
58
Q

Where are the AFFF refill stations located?

A
  • 1st deck above the AFFF stations
59
Q

What is the purpose of the AFFF proportioners?

A
  • To maintain concentrate ratio
60
Q

What is the concentrate ratio?

A
  • 94% sea water to 6% AFFF
61
Q

How do you activate the AFFF station?

A
  • electrical: manual control valve
  • hydralic: SOPV
62
Q

Where can you activate the AFFF station?

A
  • pushbutton at each AFFF station
63
Q

What is SOPV?

A
  • Solenoid operated Pilot Valve
64
Q

What does AFFF provide to?

A
  • VSA, VTA, well deck, flight deck, machinery room bilges (AMR&MMR only), JP-5 pump room, hose reels
65
Q

What is the purpose of AFFF bilge sprinkling?

A
  • To create a foam blanket, vapor lock over fuel or oil
66
Q

How many main eductors do we have?

A
  • 4
67
Q

What are the eductors rated at?

A
  • 650gpm
68
Q

where are the eductors located?

A

-Main and aux spaces

69
Q

What does PECU stand for?

A
  • Portable Exothermic Cutting Unit
70
Q

What is the PECU primary use?

A
  • Accessing spaces to rescue personnel
71
Q

What is the range of a 15Ib CO2 bottle?

A
  • 4-6 feet from the horn
72
Q

What is the 15Ib bottle length of time?

A
  • 40 seconds
73
Q

What is the primary class of fire for the C02 bottle?

A
  • Class C
74
Q

What does PKP stand for?

A
  • Potassium Bicarbonate
75
Q

What are the sizes of the PKP bottles?

A
  • 18 and 27Ib
76
Q

What is the range of the PKP bottles?

A
  • 18: 19
  • 27: 21
77
Q

What is the range of the PKP bottles?

A
  • 18: 10
  • 27: 11
78
Q

What does PKP do to electronic components?

A
  • It’s corrosive
79
Q

What class of fire does PKP combat?

A
  • B
80
Q

What is the range of a aportable 28Ib AFFF extinguisher?

A
  • 15 feet
81
Q

How long will the bottle last with continuous use?

A
  • 55-65 seconds
82
Q

What class fire does AFFF combat?

A
  • A and B
83
Q

How many gallons does AFFF produce?

A
  • 16
84
Q

What does NFTI stand for?

A
  • Nava Fire/fighting Thermal Imager
85
Q

What overhaul gear is in the repair locker?

A
  • Rake, Shovel, Halogen, Axe, NFTI
86
Q

What does CBR stand for?

A
  • Chemical, Biological, Radiation
87
Q

A chemical agent is what?

A
  • A substance through chemical reactions within the human body produces lethal or damaging effects on personnel
88
Q

What are chemical agents used for?

A
  • Weapons of mass destruction to kill, injure, or incapacitate opposing forces
89
Q

What chemical detector do we have?

A
  • M256A1
90
Q

What does it detect?

A
  • Nerve, blister, and blood agents
91
Q

What paper tests for agent?

A
  • M8 & M9
92
Q

What does M8/M9 paper detect?

A
  • liquid nerve and blister agents
93
Q

What is the response time for M8/M9 paper?

A
  • 20 seconds (M8), 10 seconds (M9)
94
Q

How does the paper identify agent?

A
  • it changes color
95
Q

What color can the M8 turn into?

A
  • Yellow/ green (nerve), red (blister)
96
Q

What color can M9 turn into?

A
  • some shades of red, more sensitive than M8
97
Q

What does MOPP stand for?

A
  • Mission Oriented Protective Procedure
98
Q

What installed chemical detector does harpers ferry have?

A
  • IDPS-LR
99
Q

What portable agent detector do we have?

A
  • dry filter unit
100
Q

How long do we have to deliver sample to shore facility?

A
  • 24H
101
Q

What gas mask do we have?

A
  • M-50
102
Q

What radiological detector do we have?

A
  • AN-PDQ-1(IM-265) & (DT-680)

ESWS (6 decks)

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