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127 Cards in this Set
- Front
- Back
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WHAT ARE SOME OF THE DIFFERENT TYPES OF HIGH CAPACITY AFFF STATIONS?
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BALANCED PRESSURE PROPORTIONER
2 SPEED INJECTION SYSTEM SINGLE SPEED INJECTION SYSTEM |
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GENERAL PRECAUTIONS
AS AFFF IS EXTREMELY CORROSIVE |
ENSURE SYSTEM IS PROPERLY ALIGNED FOLLOWING EACH USE
AVOID INADVERTENT CONTACT WITH ELECTRICAL EQUIPMENT WHEN SYSTEM MAINTENANCE IS BEING PERFORMED ENSURE YOU ARE KEPT ABREAST OF FIRE FIGHTING CAPABILITY |
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DESCRIBE THE ACTIVATION SEQUENCE IN A 2 SPEED INJECTION SYSTEM WHEN THE LOW FLOW RATE DEMAND CIRCUIT IS ENERGIZED.
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THE MASTER SOPV IS ENERGIZED, STARTING THE AFFF CONCENTRATE PUMP ON SLOW AND OPENING THE HYCHECK AND POWERCHECK VALVES AS WELL AS ENERGIZING THE SOPV FOR THE LOW FLOW RATE GROUP (MINUS HOSE REELS)
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WHAT RULES APPLY WITH RESPECT TO THE DISCHARGE OF AFFF INTO THE SEA WHEN INPORT / 3NM FROM LAND?
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PROHIBITED
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WHAT RULES APPLY WITH RESPECT TO THE DISCHARGE OF AFFF INTO THE SEA WHEN 3 -12 NM FROM LAND?
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ONLY IF SHIP'S SPEED IS > 10 KTS
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WHAT RULES APPLY WITH RESPECT TO THE DISCHARGE OF AFFF INTO THE SEA WHEN 12 NM FROM LAND?
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DISCHARGE AT WILL
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List the 3 Material Readiness Conditions
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X-ray, Yoke, and Zebra
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What is the purpose of DCC?
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Ships at sea are isolated from shore help and usually help from other ships; therefore, the crew must be capable of handling any damage the ship may encounter
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List 3 fire fighting agents
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AFFF
CO2 PKP Water |
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William (W):
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William (W): Sea suction valves and fittings which serve vital systems’ cooling water, and other fittings and equipment necessary for fire protection and mobility. They are closed only to prevent further damage.
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Circle W:
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Letter within a black circle. Signifies ventilation fittings that are normally open and operating, but may have to be closed to prevent contamination from CBR attack or smoke. When closed, the habitability of the ship decreases rapidly. Should be closed for only very short periods
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Dog Z:
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Dog Z: Fittings marked with a red “Z” inside a black “D” are closed to darken the ship. (Accesses to weather decks not equipped with light traps or door switches; porthole covers, etc.)
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FIRE FIGHTING TECHNIQUES ISOLATE EQUIPMENT/SYSTEMS/SPACES
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Mechanical Isolation
Firefighting Equipment Electrical Isolation Lighting / Ventilation Magazines Flammable Liquid Store Rooms Compressed Gas Store Rooms Additional hazards to firefighters |
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FIRE FIGHTING TECHNIQUES CONTAINMENT (SMOKE BOUNDARIES)
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A closed fitting is the best smoke boundary!
Must be established immediately to prevent evacuation of the area Primary normally coincides with the primary fire boundary Area between primary and secondary smoke boundaries is designated the “Smoke Control Zone” |
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5 VENTILATION OPTIONS
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-Vari-nozzle Technique
-Natural Ventilation -Portable Ventilation -Active Desmoking -Installed Ventilation |
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TYPICAL DIFFICULTIES IN FIRE FIGHTING
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EXTREME Heat
Firefighter Fatigue Limited Access Communications Breakdowns Limited Visibility Personnel Management |
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CLASS C FIRE SCENARIO
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INITIAL ACTIONS (Fire in propulsion plant)
Report EOOW order all sources of power secured to affected equipment Attempt to extinguish / control fire using portable extinguishers |
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WHAT CONSTITUTES A PRIMARY FIRE BOUNDARY? WHAT IS THE GOAL BEHIND SETTING THEM?
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ANY SOLID PHYSICAL BOUNDARY IMMEDIATELY SURROUNDING ALL SIX SIDES OF THE FIRE AFFECTED SPACE
PREVENT THE SPREAD OF FIRE |
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WHERE CAN YOU GET ADDITIONAL PERSONNEL TO ASSIST IN SETTING FIRE BOUNDARIES?
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AT SEA: REPAIR LOCKERS
INPORT: MUSTER POINT (MESS DECKS) “ON BOARD ON DUTY” |
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LIST THREE PRIMARY ACTIONS TO BE TAKEN BY A CREW MEMBER WHO DISCOVERS A FIRE.
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REPORT THE FIRE
EVACUATE PERSONNEL FROM THE AREA ISOLATE / CONTAIN ATTACK FIRE WITH AVAILABLE EQUIPMENT |
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WHAT ACTIONS SHOULD BE TAKEN BY A BOUNDARYMAN TO PREVENT THE SPREAD OF FIRE?
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REMOVE COMBUSTIBLES
PROVIDE LOCAL COOLING |
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WHO AUTHORIZES OPENING THE ENCLOSURE COVER OF A PIECE OF FIRE AFFECTED ELECTRICAL EQUIPMENT?
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The repair electrician or person in charge at the scene. (CO’s permission is not required as extinguishing the fire to minimize further damage is paramount)
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WHAT ARE THE DCA’s RESPONSIBILITIES WITH REGARD TO VENTILATION SYSTEMS WHILE FIGHTING A FIRE IN A CBR ENVIRONMENT ?
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RESPONSIBLE FOR ORDERING SYSTEMS SECURED BASED ON LOCATION AND STATUS OF FIRE, STATUS OF CBR BOUNDARIES AND PROTECTION ZONE INTEGRITY.
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NAME SOME OF THE SERVICES PROVIDED BY THE FIREMAIN SYSTEM.
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CMWD
FLUSHING MAGAZINE SPRINKLING BALLASTING EMERGENCY ELECTRONIC COOLING DECON STATION EDUCTOR OPERATION |
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WHAT ARE THE FOUR TYPES OF FIREMAIN SYSTEMS?
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SINGLE MAIN
HORIZONTAL LOOP VERTICAL LOOP COMPOSITE |
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CONTENTS OF THE DC CLOSURE LOG
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Listing of all DC fittings OOC
Prevents relogging of inoperative fitting Allows DCA to track maintenance & repairs |
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DARKEN SHIP BILL
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Smoking lamp: out
White lights: not visible (turn on red lights inside ship) Weather deck accesses: light locks or cutout switches installed and working Light lock screens: installed Navigation lights out |
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RESPONSIBILITIES - DCA
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Assigns responsibilities to divisions for maintaining and closing DOG-ZEBRA fittings
Supervises darken ship Trains DCPO’s in proper PMS procedures for WT doors, light ports, and light screens Responsible for Darken Ship Bill |
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RESPONSIBILITIES - DIVISION OFFICERS
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Ensure that:
All DOG-ZEBRA fittings in division are closed DCPO inspects fittings periodically Ensure darken ship reports are made to DCC/Bridge Paint light traps dull black DOG-ZEBRA fittings are stenciled |
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WHAT ARE THE TWO SECTIONS OF THE DC CLOSURE LOG?
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VIOLATION OF MATERIAL CONDITION LOG
OOC LOG |
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Investigators
1. What method of investigation is used to locate damage in tanks and voids? |
Ans: sounding and using the liquid load list.
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Why is it important to have an up to date liquid load list?
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to know the level of tanks and voids prior to damage.
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How are air test fittings used to investigate for damage?
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: loosen and listen for air escaping or water around pipe.
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Air escaping from an air test fitting indicates what kind of damage?
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possible flooding
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What method is used to check for hot doors and hatches?
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remove glove and check with back of hand ½ in from door.
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What should be used on a sounding tape when sounding a fuel tank?
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Ans: water indicating paste
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What are the four principles of investigation?
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1 investigate thoroughly,
2 investigate cautiously, 3 report quickly 4 report clearly Repeat your investigation. |
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What should be used on a sounding tape when sounding a water tank?
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Ans: chalk.
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Should you sound a fuel tank and a water tank with the same sounding tape?
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The fuel residue on the tape would contaminate the fresh water.
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How would you check a bulkhead for flooding on the other side?
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tap up the bulkhead listening for a change in sound. Look for sweating on the bulkhead.
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Access and overhaul man
1. What is the access man's job? |
Ans: to open doors, hatches and scuttles and to clear routes as necessary to gain access to the affected space.
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What equipment does the access man carry, as necessary?
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a crowbar or prybar, and a 10lb sledge hammer, bolt cutters, and PECU.
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When opening an individual dog watertight door or hatch, which side is undogged first?
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the hinge side first
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What tools are used in overhauling a fire?
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Ans: a fire axe and rake.
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How do you overhaul a class Alpha fire?
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break apart any smoldering and unburned materials. Use a fire hose with solid stream and fog.
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How do you overhaul a class Bravo fire?
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secure the source, cover the fuel with a minimum 1/2" blanket of AFFF, remove fuel (if possible), and cool surrounding area.
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How do you overhaul a class Charlie fire?
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assist the electrician
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When does the electrician secure power and lighting?
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when directed by the on scene leader prior to entering the affected space.
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Why does the electrician de energize all electrical equipment in a fire affected area?
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: to protect personnel, and prevent possible explosions or flashbacks.
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Why does the electrician bring a voltage tester to the scene?
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to ensure that circuits are de energized before attempting repairs
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What do you look for when checking for electrical damage?
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wires that may be cut, grounded, shorted or destroyed.
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Why must an electrician's rubber gloves be inspected for cracks or holes?
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to prevent electrical shock.
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How do you repair damaged wiring in a vital circuit?
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Ans: splice non vital wire of the same gauge or larger into vital circuit after ensuring that both circuits are de energized. Always working from the load to the source.
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When does the electrician secure lighting?
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when directed to by the on scene leader.
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What is the maximum effective range of a 15 lb CO2 extinguisher?
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Ans: 4 to 6 ft from the tip of the horn.
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Why is CO2 recommended for class charlie fires?
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it's non conductive, non corrosive, leaves no residue, and does not damage equipment.
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How do you direct the CO2 when fighting a class charlie fire?
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at the base of the flame with a sweeping motion.
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How does CO2 extinguish a fire
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removes the oxygen to the extent that combustion can not be sustained.
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How can you tell when a CO2 bottle is empty?
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when the extinguisher makes a hollow sound
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How long will a 15 lb CO2 extinguisher last under continuous operation?
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approximately 40 to 45 seconds.
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What is the mixing ratio for AFFF and water?
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94% water, 6% AFFF concentrate.
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Can AFFF be used on class alpha fires?
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yes, because of the cooling effect of the water.
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What is the shelf life of AFFF?
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: indefinite.
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What class of fire is AFFF normally used for?
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class bravo.
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Can you use AFFF in conjunction with PKP?
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yes
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Will AFFF float on top of fuel?
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Ans: yes
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Afff nozzles (below decks) should be preset at how many gallons per minute?
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95 gpm.
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Which type of nozzle should be used with the inline eductor?
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a 95 gpm vari nozzle
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What should the firemain pressure be at the inlet side of the inline eductor?
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100 psi.
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How many lengths of hose may be added to the discharge side of the inline eductor and still maintain an effective AFFF\water mixture?
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3 lengths of 50 ft hose for same deck or up one deck, 6 lengths to go down one deck.
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How long will a 5 gallon can of AFFF last under continuous use with the inline eductor?
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approximately one minute.
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Which mode should the NFTI be used in?
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chop.
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NFTI
A battery pack with fresh batteries has a life of approximately how long? |
: 60 to 90 minutes.
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How many L.E.D. lights will be illuminated in the lower left hand corner of the viewing screen with fresh batteries?
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L.E.D. lights.
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Why is it important for the NFTI operator to stay low?
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to avoid hot gases high in the space and to maintain a clear image with the NFTI
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What is the power source for the fire finder?
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Ans: 2 standard 9-volt batteries.
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Can the fire finder be used if it fails the self-test?
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no
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What is the maximum range the fire finder is sensitive to?
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15 ft
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Can the fire finder be used for overhaul?
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yes.
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What is the primary purpose of the fire finder?
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to locate fires or hot spots.
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How many bail positions does the vari-nozzle have?
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two. Open and closed.
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What is the widest fog angle achieved by the vari nozzle?
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90 degrees.
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How should the vari nozzle be stowed?
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bail handle in closed position and nozzle set to narrow 30 degrees angle.
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2. Does the amount of water discharged from the vari nozzle change
From straight stream to wide angle fog? |
no, it remains the same regardless of water pattern.
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What are the flow rates for the 1½ in vari nozzle?
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Ans: 95 and 125 gpm.
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1. How long will the EEBD m-20.2 last?
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10 minutes.
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2. How long can the EEBD m-20.2 be belt worn?
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5 continuous years, then it is used as a racked EEBD.
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3. What are some factors that affect time duration of breathing air?
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: amount of work, physical fitness, breathing rate, and familiarity of escape routes.
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4.What indicates the EEBD m-20.2 is bad?
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the needle is out of the green
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5.What is the recommended shelf-life of the EEBD m-20.2?
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15 years.
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What is the burn rate of the fuel rods used with the PECU?
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approximately 30 inches per minute.
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What should not be cut with the PECU?
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pressurized piping that contains flammable fluids or energized electrical cables.
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PECU is used to cut through what types of material?
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steel, aluminum, laminates, piping and cables.
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What provides the power to initially ignite the fuel rod?
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a 12 volt battery internal to the PECU.
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Whose permission is required prior to cutting holes in watertight bulkheads or decks, fire zone bulkheads or decks, strength deck, or hull plating?
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the commanding officer
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How is the fuel rod extinguished?
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release the oxygen lever and turn off oxygen bottle.
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Why is the PECU used to cut holes in the bulkheads, decks, and overhead?
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to fight fires, vent smoke and heat, and drain fire fighting water.
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What are the two types of portable eductors?
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s type and peri jet.
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. What is the primary purpose of eductors?
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to remove water
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What are some of the advantages of the peri jet eductor?
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Ans: 1) it will pass small objects. 2) will remove contaminated water. 3) safe because overheating and sparks are eliminated.
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How is the p 250 mod 1 or 2 cooled?
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it is water cooled.
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What action should be taken if the p 250 mod 1 or 2 pump fails to create water pressure after 45 seconds?
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stop pump, tighten all hose connections and prime again.
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What size reducer is used if an eductor is used on the suction side of a p 250 mod 1 or 2 pump?
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4 inch to 3 inch.
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What are the primary purposes of the p 250 mod 1 or 2 pump?
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firefighting and dewatering
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What is the suction lift of the p 250 mod 1 or 2 without utilizing an eductor?
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20 ft.
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Submersible pumps are not designed for pumping what types of liquid?
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: gasoline, heavy oils, or hot water.
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Why is a strainer used with a submersible pump?
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to prevent debris from entering the pump.
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How many gallons of liquid will the submersible pump deliver?
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200 gpm at a 50 ft discharge head; 140 gpm at a 70 ft discharge head.
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What size discharge hose is used with the submersible pump?
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a two and one half inch
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When must the submersible pump be primed?
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when a suction hose with a foot valve is attached to the pump.
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Can the s-type eductor be used with the p-250 mod 1or 2?
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yes, both 1 and 2
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What type of blowers are used to desmoke a compartment containing explosive gases?
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1) pneumatic blowers or air driven blowers. 2) ramfan.
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How many cubic feet of air can be removed (per minute) by a pneumatic blower?
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750 cubic feet per minute with 45 ft of 8-inch hose attached.
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How are blowers used to aid the attack team in fire fighting?
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they may be used to ventilate smoke, toxic gases, steam, and heat away from the attack teams outside of the fire space.
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How are portable blowers rigged when desmoking a space?
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they are set on a weather deck rigged to take air out of the affected space.
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What size hose is used with the ramfan
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Ans: 8 inch
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What is the actuating source of the ramfan
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Ans: a 1½ inch firehose at 50 to 200 psi.
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How many complete space volume of air changes are required in a compartment?
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Ans: 4 (95% of the smoke laden air removed).
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How many cubic feet per minute of air will the super vac remove?
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Ans: 3200 CFM.
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What is the order of atmospheric tests to be conducted after a fire?
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) oxygen, 2) explosive, 3) toxic gases
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What is the percentage of oxygen required to consider a space safe?
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19.5 to 22%
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Explosive gas tests should be below what percentage of l.e.l. to be considered safe?
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below 10% l.e.l.
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What is done if a space tests above 10% of the l.e.l. for explosive gases?
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continue to desmoke and retest.
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Who may conduct post fire atmospheric tests?
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Ans: gas free engineers, gas free engineering petty officers ( e-5 or above )
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What equipment is primarily used in setting a fire boundary?
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Ans: 1½ in hose and nozzle or some other continuous means of cooling, (a garden hose).
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What are primary fire boundaries?
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Ans: fwd, aft, port, stbd, top and bottom of the affected space.
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What is the maximum pressure allowable on a soft patch?
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Ans: 150 psi.
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