228 DC Questions Flashcards
General Damage Control
WHAT METHOD OF INVESTIGATION IS USED TO LOCATE DAMAGE IN TANKS AND VOIDS?
ANS: SOUNDING AND USING THE LIQUID LOAD LIST.
- WHY IS IT IMPORTANT TO HAVE AN UP TO DATE LIQUID LOAD LIST?
ANS: TO KNOW THE LEVEL OF TANKS AND VOIDS PRIOR TO DAMAGE.
- HOW ARE AIR TEST FITTINGS USED TO INVESTIGATE FOR DAMAGE?
ANS: LOOSEN AND LISTEN FOR AIR ESCAPING OR WATER AROUND PIPE.
- AIR ESCAPING FROM AN AIR TEST FITTING INDICATES WHAT KIND OF DAMAGE?
ANS: POSSIBLE FLOODING.
WHAT METHOD IS USED TO CHECK FOR HOT DOORS AND HATCHES?
ANS: REMOVE GLOVE AND CHECK WITH BACK OF HAND ½ IN FROM DOOR.
WHAT SHOULD BE USED ON A SOUNDING TAPE WHEN SOUNDING A FUEL TANK?
ANS: WATER INDICATING PASTE.
- WHAT ARE THE FOUR PRINCIPLES OF INVESTIGATION?
ANS: INVESTIGATE THOROUGHLY, CAUTIOUSLY, REPORT QUICKLY AND CLEARLY. REPEAT YOUR INVESTIGATION.
- WHAT SHOULD BE USED ON A SOUNDING TAPE WHEN SOUNDING A WATER TANK?
ANS: CHALK.
- SHOULD YOU SOUND A FUEL TANK AND A WATER TANK WITH THE SAME SOUNDING TAPE?
ANS: NO. THE FUEL RESIDUE ON THE TAPE WOULD CONTAMINATE THE FRESH WATER.
- HOW WOULD YOU CHECK A BULKHEAD FOR FLOODING ON THE OTHER SIDE?
ANS: TAP UP THE BULKHEAD LISTENING FOR A CHANGE IN SOUND.LOOK FOR SWEATING ON THE BULKHEAD.
- WHAT IS THE ACCESS MAN’S JOB? (3)
ENS: TO OPEN DOOPS, HATCHES AND SCUTTLES AND TO CLEAR ROUTES AS NECESSARY TO GAIN ACCESS TO THE AFFECTED SPACE.
2 WHAT EQUIPMENT DOES THE ACCESS MAN CARRY, AS NECESSARY?
ANS: A CROWBAR OR PRYBAR, AND A 10LB SLEDGEHAMMER, BOLT CUTTERS, AND PECU.
- WHEN OPENING AN INDIVIDUAL-DOG WATERTIGHT DOOR OR HATCH, WHICH SIDE IS UNDOGGED FIRST?
ANS: THE HINGE SIDE FIRST.
- WHAT TOOLS ARE USED IN OVERHAULING A FIRE? (3)
ANS: A FIRE AXE, PAKE, AND FIRE HOSE.
- HOW DO YOU OVERHAUL A CLASS ALPHA FIRE?(2)
ANS: BREAK APART ANY SMOLDERING AND UNBURNED MATERIALS. USE A FIRE HOSE WITH SOLID STREAM AND FOG.
- HOW DO YOU OVERHAUL À CLASS BRAVO FIRE? (4)
ANS: SECURE THE SOURCE, COVER THE FUEL WITH A BLANKET OF AFFF, REMOVE FUEL (IF POSSIBLE), AND COOL SURROUNDING AREA.
- HOW DO YOU OVERHAUL A CLASS CHARLIE FIRE?
ANS: ASSIST THE ELECTRICIAN.
- WHEN DOES THE ELECTRICIAN SECURE POWER AND LIGHTING?
ANS: WHEN DIRECTED BY THE ON-SCENE-LEADER PRIOR TO ENTERING THE AFFECTED SPACE.
- WHY DOES THE ELECTRICIAN DE-ENERGIZE ALL ELECTRICAL EQUIPMENT IN A FIRE AFFECTED AREA?
ANS: TO PROTECT PERSONNEL AND PREVENT POSSIBLE EXPLOSIONS OR FLASHBACKS.
- WHY DOES THE ELECTRICIAN BRING A VOLTAGE TESTER TO THE SCENE?
ANS: TO ENSURE THAT CIRCUITS APE DE-ENERGIZED BEFORE ATTEMPTING PEPAIRS.
- WHAT DO YOU LOOK FOR WHEN CHECKING FOR ELECTRICAL DAMAGE?
WIRES THAT MAY BE CUT, GROUNDED, SHORTED OR DESTROYED.
- WHY MUST AN ELECTRICIAN’S RUBBER GLOVES BE INSPECTED FOR CRACKS OR HOLES?
ANS: TO PREVENT ELECTRICAL SHOCK.
- HOW DO YOU REPAIR DAMAGED WIRING IN A VITAL CIRCUIT? (2)
ANS: SPLICE NON-VITAL WIRE OF THE SAME GAUGE OR LARGER INTO VITAL CIRCUIT AFTER ENSURING THAT BOTH CIRCUITS ARE DEENERGIZED. ALWAYS WORKING FROM THE LOAD TO THE SOURCE.
- WHEN DOES THE ELECTRICIAN SECURE LIGHTING?
ANS: WHEN DIRECTED TO BY THE ON SCENE LEADER.
- HOW IS THE VOLTAGE TESTER, (WIGGINS) TESTED?
ANS: FROM A KNOWN SOURCE.
- WHAT IS THE PRESSURE DIFFERENCE, IN POUNDS, ALLOWED BETWEEN THE BOTTLE PRESSURE GAGE AND THE REMOTE PRESSURE GAGE?
ANS: NO MORE THAN 500 LBS.
- WHAT IS THE PURPOSE OF THE SCBA?
ANS: TO SUPPLY OXYGEN INDEPENDENT OF THE SURROUNDING ATMOSHPERE.
- HOW ARE SIZES RECOGNIZED FOR THE FACE PIECES?
ANS: SCOTT USES COLORED RUBBER SEALS AND MA USES COLORED LENS OUTLINES
- WHAT ALERTS YOU TO LOW PRESSURE IN YOUR BOTTLE?
ANS: SCOTT HAS A VIBRAL ALARM AND BELL THAT SOUNDS UPON BREATH INTAKE AND MSA HAS A BELL LOCATED ON THE BOTTLE.
- WHY SHOULD YOU CHECK YOUR REMOTE PRESSURE GAGE OFTEN?
ANS: A DRASTIC PRESSURE DROP COULD BE A LEAK WITH THE BOTTLE OR AIRPACK.
- WHAT ARE THE TWO SIZES OF SCBA BOTTLES USED ONBOARD USS LASSEN?
ANS: 30 MINS AND 45 MINS
- WHICH LOCKER PERSONNEL USE THE 30 MIN SCBA BOTTLE?
ANS: INVESTIGATOR, AND ELECTRICIAN
- HOW IS PKP USED TO EXTINGUISH FIRES IN CONFINED SPACES?
ANS: SHORT BURSTS AS NECESSARY.
- WHERE SHOULD PKP BE DIRECTED?
ANS: AT THE BASE OF THE FLAMES IN A RAPID SWEEPING MOTION.
- WHAT IS THE EFFECTIVE RANGE OF AN 18-POUND PKP EXTINGUISHER?
ANS: APPROXIMATELY 16 TO 20 FEET.
- FOR WHAT CLASS OF FIRES IS PKP MOST EFFECTIVE?
ANS: CLASS BRAVO.
- HOW WOULD YOU PROTECT YOURSELF FROM THE INTENSE HEAT OF FIRE WITH PKP?
ANS: SHORT BURSTS OF PKP IN THE AIR WILL SERVE AS A HEAT SHIELD.
- HOW LONG DOES AN 18LB PKP BOTTLE LAST UNDER CONTINUOUS USE?
ANS: 10 SECONDS
- HOW LONG DOES A 27 LB PKP BOTTLE LAST UNDER CONTINUOUS USE?
ANS: 11 SECONDS.
- WHAT IS THE MAXIMUM EFFECTIVE RANGE OF A 15 LB CO2 EXTINGUISHER?
ANS: 4 TO 6 FT FROM THE TIP OF THE HORN.
- WHY IS CO2 RECOMMENDED FOR CLASS CHARLIE FIRES?
ANS: IT’S NON-CONDUCTIVE, NON-CORROSIVE, LEAVES NO RESIDUE, AND DOES NOT DAMAGE EQUIPMENT.
- HOW DO YOU DIRECT THE CO2 WHEN FIGHTING A CLASS CHARLIE FIRE?
ANS: AT THE BASE OF THE FLAME WITH A SWEEPING MOTION.
- HOW DOES CO2 EXTINGUISH A FIRE?
ANS: REMOVES THE OXYGEN TO THE EXTENT THAT COMBUSTION CAN NOT BE SUSTAINED.
- HOW CAN YOU TELL WHEN A CO2 BOTTLE IS EMPTY?
ANS: WHEN THE EXTINGUISHER MAKES A HOLLOW SOUND.
- HOW LONG WILL A 15 LB CO2 EXTINGUISHER LAST UNDER CONTINUOUS OPERATION?
ANS: APPROXIMATELY 45 SECONDS.
- WHAT IS THE MIXING RATIO FOR AFFF AND WATER?
ANS: 94% WATER, 6 AFFF CONCENTRATE.
- CAN AFFF BE USED ON CLASS ALPHA FIRES?
ANS: YES, BECAUSE OF THE COOLING EFFECT OF THE WATER.
- WHAT IS THE SHELF LIFE OF AFFF?
ANS: INDEFINITE.
- WHAT CLASS OF FIRE IS AFFF NORMALLY USED FOR?
ANS: CLASS BRAVO.
- CAN YOU USE AFFF IN CONJUNCTION WITH PKP?
ANS: YES.
- WILL AFFF FLOAT ON TOP OF FUEL?
ANS: YES.
- AFFF NOZZLES (BELOW DECKS) SHOULD BE PRESET AT HOW MANY GALLONS PER MINUTE?
ANS: 95 GPM.
- HOW MANY AFF STATIONS ARE ONBOARD THE USS LASSEN AND WHAT ARE THE TANK CAPACITIES?
ANS: 2/ WITH 600 GALLON CAP (EACH)
- HOW LONG DOES. AN AFFF BOTTLE LAST UNDER CONTINUOUS USE?
ANS: 55-65 SECONDS
- WHICH TYPE OF NOZZLE SHOULD BE USED WITH THE INLINE EDUCTOR?
ANS: A 95 GPM VARI-NOZZLE.
- WHAT SHOULD THE FIREMAIN PRESSURE BE AT THE INLET SIDE OF THE INLINE EDUCTOR?
ANS: 100 PSI.
- HOW MANY LENGTHS OF HOSE MAY BE ADDED TO THE DISCHARGE SIDE OF THE INLINE EDUCTOR AND STILL MAINTAIN AN EFFECTIVE AFFF\WATER MIXTURE?
ANS: 3 LENGTHS OF 50 FT HOSE FOR SAME DECK OR UP ONE DECK LENGTHS TO GO DOWN ONE DECK.
- HOW LONG WILL A 5 GALLON CAN OF AFFF LAST UNDER CONTINUOUS USE WITH THE INLINE EDUCTOR?
ANS: APPROXIMATELY ONE MINUTE.
- WHAT ACTIVATES HALON RELEASE?
ANS: CO2.
- HOW MANY HALON CYLINDER STORE ROOMS ARE ONBOARD LASSEN? WHERE ARE THEY LOCATED?
ANS: BY REPAIR 5, AND BY THE SS02 OFFICE.
- ONCE THE HALON SYSTEM IS ACTIVATED, HOW IS THE VENTILATION SECURED?
ANS: AUTOMATICALLY THROUGH INSTALLED PRESSURE SWITCH.
- THE HALON SYSTEM TAKES APPROXIMATELY HOW LONG TO COMPLETELY DISCHARGE?
ANS: 10 SECONDS.
- WHAT IS THE PRIMARY FUNCTION OF THE HALON SYSTEM?
ANS: TO EXTINGUISH MAIN SPACE FIRES WHICH ARE BEYOND THE CAPABILITIES OF OTHER EXTINGUISHING’ SYSTEMS.
- WHAT WARNINGS ARE GIVEN WHEN THE HALON SYSTEM HAS BEEN ACTIVATED?
ANS: VISUAL AND AUDIBLE ALARMS.
- WHAT IS THE REQUIRED “SOAK” TIME BEFORE ENTERING A SPACE AFTER HALON DISCHARGE?
ANS: MINIMUM 15 MINUTES SOAK. 15 MINUTES FOR VENTLIATION = 30 MINUTES TOTAL.
- HOW LONG IS THE TIME DELAY, FOR THE HALON 1301 FLOODING SYSTEM?
ANS: 60 SEC FOR A MANNED SPACE, 30 SECONDS FOR AN UNMANNED SPACE.
- WHAT ARE THE TYPES OF PORTABLE EDUCTORS?
ANS: S-TYPE, PERI-JET, ESP (electrical submersible pump) AND P-100.
- WHAT IS THE PRIMARY PURPOSE OF EDUCTORS?
ANS: TO REMOVE WATER.
- WHAT ARE SOME OF THE ADVANTAGES OF THE PERI-JET EDUCTOR?
ANS: 1 IT WILL PASS SMALL OBJECTS. 2 WILL REMOVE CONTAMINATED WATER. 3 SAFE BECAUSE OVERHEATING AND SPARKS ARE ELIMINATED.
- WHAT IS THE MAXIMUM LIFT THAT A P-100 PUMPS CAN TAKE A SUCTION FROM?
ANS: 20 FT.
- HOW IS THE P-100 COOLED WHILE IN USE?
ANS: AIR.
- WHAT IS THE PRIMARY USE OF THE P-100?
ANS: FIRE FIGHTING, DEWATERING AND MANY UTILITY FUNCTONS.
- WHAT TYPE OF FUEL DOES THE P-100 UTILIZE?
ANS: (DIESEL) JP5 OR DEM
- DOES THE P-100 REQUIRE THE USE OF A FOOT VALVE?
ANS: YES.
- WHAT IS THE GALLON PER MINUTE AND PSI RATING OF THE P-100?
ANS: 100 GPM 83 PSI
ELECTRIC SUBMERSIBLE PUMP. SUBMERSIBLE PUMPS ARE NOT DESIGNED FOR PUMPING WHAT TYPES OF LIQUID?
ANS: GASOLINE, HEAVY OILS, OR HOT WATER.
- WHY IS A STRAINER USED WITH A SUBMERSIBLE PUMP?
ANS: TO PREVENT DEBRIS FROM ENTERING THE PUMP.
- HOW MANY GALLONS OF LIQUID WILL THE SUBMERSIBLE PUMP DELIVER?
ANS: 200 GPM AT A 50 FT DISCHARGE HEAD: 140 GPM AT A 70 FT DISCHARGE HEAD.
- WHAT SIZE DISCHARGE HOSE IS USED WITH THE SUBMERSIBLE PUMP?
ANS: A TWO AND ONE HALF INCH.
- WHEN MUST THE SUBMERSIBLE PUMP BE PRIMED?
ANS: WHEN A SUCTION HOSE WITH A FOOT VALVE IS ATTACHED TO THE PUMP.
- WHAT TYPE OF BLOWERS ARE USED TO DESMOKE A COMPARTMENT CONTAINING EXPLOSIVE GASES?
ANS: 1) PNEUMATIC OR AIR DRIVEN. 2) RAM FAN
- HOW MANY CUBIC FEET OF AIR CAN BE REMOVED (PER MINUTE) BY A PNEUMATIC BLOWER?
ANS: 750 CUBIC FEET PEP MINUTE WITH 45 FT OF 8-INCH HOSE ATTACHED.
- HOW ARE BLOWERS USED TO AID THE ATTACK TEAM IN FIRE FIGHTING?
ANS: THEY MAY BE USED TO VENTILATE SMOKE, TOXIC GASES, STEAM AND HEAT AWAY FROM THE ATTACK TEAMS OUTSIDE OF THE FIRE SPACE.
- HOW MANY CUBIC FEET OF AIR CAN BE REMOVED BY THE BOX FAN?
ANS: 3200 CFM
- WHAT SAFETY PRECAUTIONS MUST BE FOLLOWED PRIOR TO ENERGIZING THE RAM FAN?
ANS: GROUND CLAMP MUST BE ATTACHED TO HULL STRUCTURE TO PREVENT THE BUILD-UP OF STATIC ELECTRICITY.
- WHOSE PERMISSION MUST BE OBTAINED PRIOR TO DESMOKING USING THE INSTALLED VENTILATION SYSTEM?
ANS: CHIEF ENGINEERING OFFICER.
- WHICH SYSTEM CAN BE CONVENIENTLY USED TO CLEAR A SPACE DIRECTLY OPEN TO THE WEATHER?
ANS: EXHAUST SYSTEM.
- HOW MANY CUBIC FEET OF AIR PER MINUTE WILL THE RAMFAN PRODUCE AT 150 PSI?
ANS: 2000 CFM.
- WHAT IS THE BOX FAN POWERED BY?
ANS: ELECTRICITY 115 VOLTS
- WHAT IS THE ACTUATING SOURCE OF THE RAMFAN?
ANS: A 1 1/2-INCH FIREHOSE AT 50 TO 200 PSI.
- WHAT EQUIPMENT IS PRIMARILY USED IN SETTING A FIRE BOUNDARY?
ANS: 1½-IN HOSE AND NOZZLE OR SOME OTHER CONTINUOUS MEANS OF COOLING, (A GARDEN HOSE).