AFFF FIREFIGHTING SYSTEMS

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AFFF FIREFIGHTING SYSTEMS
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AFFF SYSTEMS

• HIGH CAPACITY SYSTEMS

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AFFF FACTS

• CLEAR TO SLIGHTLY AMBER APPEARANCE
• INDEFINITE SHELF LIFE
• STORE AT TEMPERATURES gt320F (if AFFF freezes, it
  may be used after thawing)
• 94 WATER / 6 FOAM MIX

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AFFF FACTS

• MIXES WITH WATER TO FORM AN AQUEOUS FILM WHICH
  EXCLUDES OXYGEN FROM THE SURFACE OF THE FUEL
• COOLS DUE TO WATER CONTENT
• EXCELLENT PENETRATING CHARACTERISTICS / SUPERIOR
  TO WATER ON CLASS A FIRES

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AFFF FACTS

• GENERAL PRECAUTIONS
• 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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AFFF FACTS

• GENERAL PRECAUTIONS
• SOME FORMATION/COLLECTION OF H2S MAY OCCUR IN
  PIPING/AREAS WHERE AFFF STANDS STAGNANT FOR A
  PERIOD OF TIME, PARTICULARLY IN THE BALANCED
  PROPORTIONING SYSTEM

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AFFF SYSTEM COMMON ITEMS

• OVERBOARD DISCHARGE REQUIREMENTS
• lt3 NM FROM LAND - NO OVERBOARD DISCHARGE
• 3 - 12 NM FROM LAND - DISCHARGE PERMITTED IF
  SHIP SPEED IS 10 KTS OR HIGHER
• gt12 NM FROM LAND - DISCHARGE AS REQUIRED

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AFFF SYSTEM COMMON ITEMS

• DC DECK RE-ENTRY HOSE REELS
• 125 NON COLLAPSIBLE RUBBER HOSE WITH 11/2 INCH
  95 GPM VARI NOZZLE (100 ON MHC)
• HOSE REEL CUTOUT VALVE NORMALLY CLOSED

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AFFF SYSTEM COMMON ITEMS

• ENGINEERING SPACE HOSE REELS
• 50 NON COLLAPSIBLE RUBBER HOSE WITH 11/2 INCH 95
  GPM VARI NOZZLE
• HOSE REEL CUTOUT VALVE LOCKED OPEN.

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AFFF SYSTEM COMMON ITEMS

• ENGINEERING SPACE HOSE REELS
• 27 LB PORTABLE PKP CYLINDER LOCATED NEAR EACH
  AFFF HOSE REEL

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AFFF SYSTEM COMMON ITEMS

• SERVICE VALVE TEST CASTING
• ALLOWS FOR TESTING OF BILGE SPRINKLING SYSTEM
  WITHOUT SPRINKLING THE BILGES
• AFFF CONCENTRATE TANKS
• MANUFACTURED FROM 9010 CUNI OR STAINLESS
• VENT/VACUUM BREAKER .05PSIG/.05Hg

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BILGE SPRINKLING SERVICE VALVE
TEST FITTING
INLET
INLET
SERVICE VALVE TEST CAST FITTING
CHAIN
TEST CONNECTION
CAP
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AFFF SYSTEM COMMON ITEMS

• PLANNED MAINTENANCE
• DAILY INSPECTION OF VALVE ALIGNMENT AND FLUID
  LEVELS
• MONTHLY PUMP MAINTENANCE CHECKS
• SEMI ANNUAL CHECK FOR SEAWATER CONTAMINATION

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AFFF SYSTEM COMMON ITEMS

• PLANNED MAINTENANCE
• SEMI ANNUAL SYSTEM OPERATION CHECK FROM ALL
  REMOTE LOCATIONS
• ANNUAL FOAM ANALYSIS
• NUMEROUS SITUATIONAL REQUIREMENTS

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FIXED EDUCTOR SYSTEM

• HIGH POINTS
• FOUND ON MHC / MCM
• MCM
• FORWARD TANK CAPACITY 50 GL
• AFT TANK CAPACITY 200 GL
• MHC
• TANK CAPACITIES 75 GL FWD / AFT

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FIXED EDUCTOR SYSTEM

• TANKS ARE REFILLED VIA GRAVITY FROM STORAGE TANK
  LOCATED NEAR STACKS
• PMS CHECK FOR AFFF CONCENTRATE SEAWATER
  CONTAMINATION IS DONE QUARTERLY
• OVERHEAD SPRINKLERS INSTALLED IN MHC CLASS SHIPS

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BPPS AFFF System
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AFFF FILL CONN
LOW FLOW RATE DEMAND (WEAPON, ELEVATORS, PUMP
ROOMS)
POWERTROL W/ TEST CASTING
OPTIONAL AFFF FILL CONN
HIGH FLOW RATE DEMAND (HANGAR SPRINKLER SYSTEM)
TO HOSE STATION OUTLETS
VENT
MANUALLY OPERATED BUTTERFLY VALVE
AFFF CONCENTRATE STORAGE TANK
BUTTERFLY VALVE
2 SPEED INJECTION SYSTEM
RECIRC CUTOUT
POWERCHECK
SUCTION LINE
DRAIN
CUTOUT
SEAWATER HUDRAULIC CONTROL LINES
SOPV
AFFF CONCENTRATE TWO SPEED AFFF PUMP
SEAWATER HYDRAULIC CONTROL LINE
SOPV
CONCENTRATE PRESSURE GAGE
SOPV
SOPV
HYCHECK
FIREMAIN
STRAINER BLOWDOWN
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2 SPEED INJECTION SYSTEM

• HIGH POINTS
• PUMPS RATED AT 27/65 GPM _at_175 PSI
• 27 GPM - LOW FLOW RATE DEMAND USER (HOSE LINE,
  ELEVATOR SRINKLER, etc)
• 65 GPM - HIGH FLOW RATE DEMAND USER (HANGAR
  SPRINKLER, etc)
• POSITIVE DISPLACEMENT ROTARY VANE TYPE PUMP
• MOTOR CONTROLLER POWERED FROM ABT
• START LOCAL/ REMOTE. MUST BE STOPPED LOCALLY

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Single Speed Injection AFFF System
MAIN DECK
600 GALLON AFFF CONCENTRATE TANK
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DECK EDGE NOZZLES
FLUSH DECK NOZZLES
PRESSURE SWITCHES
POWERTROL TYPE VALVE
FIREMAIN
03 DECK
SOPV
CHECK VALVE
SINGLE SPEED AFFF SYSTEM
MAIN DECK
TO TRANSFER SYSTEM
ALTITUDE GAGE
VENT
PUMP DISCHARGE GAGE
600 GALLON AFFF TANK
AFFF PUMP
2ND DECK
HYDRAULIC CHECK VALVE
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SINGLE SPEED AFFF SYSTEM

• HIGH POINTS
• SERVICES HANGAR AND FLIGHT DECK AREAS, PUMP ROOMS
• FLUSH DECK NOZZLES
• DECK EDGE NOZZLES
• ELECTRIC PUSHBUTTON AT EACH HOSE OUTLET

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HIGH CAPACITY AFFF SYSTEM

• HIGH POINTS
• TYPES INSTALLED IN NAVY SHIPS
• BALANCED PRESSURE PROPORTIONER
• ELECTRIC 2 SPEED AFFF PUMP SYSTEM
• HIGH CAPACITY SINGLE SPEED PUMP

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SUMMARY

• FOAM GENERATING SYSTEMS
• 2 SPEED INJECTION SYSTEM
• HIGH CAPACITY SYSTEMS

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REVIEW QUESTION

• WHAT RULES APPLY WITH RESPECT TO THE DISCHARGE OF
  AFFF INTO THE SEA WHEN
• INPORT / 3NM FROM LAND?
• PROHIBITED
• 3 -12 NM FROM LAND?
• IF SHIP SPEED IS gt 10 KTS
• gt12 NM FROM LAND?
• DISCHARGE AT WILL

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REVIEW QUESTION

• DESCRIBE THE ACTIVATION SEQUENCE IN A 2 SPEED
  INJECTION SYSTEM WHEN THE LOW FLOW RATE DEMAND
  CIRCUIT IS ENERGIZED.
• 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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REVIEW QUESTION

• WHAT ARE SOME OF THE DIFFERENT TYPES OF HIGH
  CAPACITY AFFF STATIONS?
• BALANCED PRESSURE PROPORTIONER
• 2 SPEED INJECTION SYSTEM
• SINGLE SPEED INJECTION SYSTEM

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INSTALLED FIREFIGHTING SYSTEMS