FDNY Final Study Guide SCBA CBRN – Chemical Biological Radiation Nuclear Confined Spaces – defined as any space not designed for continual habitation, limited mean for entry and exit, large enough so a person can enter and work. eg basements, Sub basements, crawl spaces, cocklofts, ship holds etc. Limits of protection Anywhere the mask is not covering, example ruptured eardrum; it’s not a hazmat suit. Do Not use underwater Actual Working time will vary from person to person – if out of air member should remove the regulator from the facepiece. Carbon Monoxide Odorless / colorless Tasteless Cumulative Explosive Non-irritanting, Toxic Gas Lower Explosive Limit (LEL) – 12.5% PPM Upper Explosive Limit (UEL) – 74% PPM 1128F – ignition Temperature Hemoglobin in the blood is 210 times more attracted to CO than Oxygen CO poisoning is Cumulative Parts of the SCBA Backframe and Harness Assembly Check welds and straps during inspection Breathing Air cylinder Holds Purified breathing air 4500PSI Service Life – 15 years Hyrdostatic tested every 5 years SOC escape cylinders need to be tested every 3 years 30 min cylinder = ~1200 liters 45min cylinder = ~1800 liters 60min cylinder =~2400 liters End of service time indicator (EOSTI) alarms (Vibalert and Hud) when 25% air is remaining. Working time varies by physical condition, physical activity, atmospheric pressure, degree of training, fear, excitement, improperly fitted facepiece Training Cyclinders have a blue top and are NOT to be used in the field. High Pressure Hose and Coupling Never tighten with a wrench UAC (Universal Air Connection) Permits emercency air replenishment Do not use to Charge Cylinder PRA (Pressure Reducer Assembly) Steps pressure to 100PSI for Primary, 150PSI for Secondary, and if both fail will dump pressure until 185PSI Low Pressure Hose Regulator Assembly Positive Demand Regulator HUD( Heads up display) 4 lights on the HUD for volume 1 light for battery (all the way to the right) 1 red light – 25% full 1 yellow light – 50% full 1 green light – 75% full 2 green lights = Full Spraybar – 9 holes Vibalert Alarm Activates during the following: 25% Left in the cylinder PRA failure Initially when the cylinder is opened. Remote Console with PAK Alert SE7 ( PASS Alarm ) Pre Alarm – motionless for 20 seconds / Clear by hitting the yellow reset button or moving. Full Alarm – 12 seconds after 20 seconds of prealarm (32 seconds) or you hit the red button / clear by hitting the yellow reset button TWICE Turn off by – hitting reset Twice with no Alarm and no air in the system Inspection of SCBA At 0900 and 1800 hour roll call After Each Use Before the start of a Multi-Unit drill Procedure Check Backframe Harness Assembly Facepiece Seals, rubber, voicemitter, 5 Screws Present Cylinder inspection High Pressure Hand Coupling and RIC UAC PRA Low Pressure Hose Regulator Assembly Operation and inspection of PAK Alert Battery Test Full Alarm Test Manual Button Open Cylinder – Check HUD has five lights lit up for 20 seconds then look for full cylinder 2 lights Check PreAlarm Check Pre Alarm Reset Check Full Alarm and Reset Turn off cylinder – use purge valve to release air Turn off PAK Alert Do Personal Adjustments Cleaning ¼ cup bleach to every 1 gallon of water SCBA Emergency Procedures • • When trapped or entangled, give Mayday command first, prior to freeing yourself. Cancel Mayday if you become free and safe Quick Release Escape (If entangled in the rear) • • • • • • • • • • Leave facepiece ON if operating in contaminated area Squeeze alligator clips and fully extend both shoulder straps With the left hands grasp left shoulder strap as high as possible Slip right arm through right strap unbuckle waist belt As left hand continues to grasp shoulder strap member should turn to the their left 180 degrees to face the entangled SCBA With free right hand sweep entire SCBA to locate obstruction Free SCBA, if needed use cutting tool kept in right pocket of bunker coat Place both hands on should straps and back from obstruction Redon SCBA – Waist buckle then shoulders Cancel Mayday when member becomes safe Low Profile Maneuver • • • • • • • Leave facepiece ON if operating in contaminated area Squeeze alligator clips and fully extend both shoulder straps With the left hands grasp left shoulder strap as high as possible Slip right arm through right strap unbuckle waist belt As left hand continues to grasp shoulder strap allow SCBA to swing lover left shouldrer to front of body Lay SCBA down on cylinder (cylinder down/bumper facing away from you), push in front of you Once overhead construction in cleared Redon SCBA Reduced Profile Maneuver • Leave facepiece ON if operating in contaminated area • • • • • Squeeze alligator clips and fully extend both shoulder straps Slip the right arm through the right shoulder strap and grasp waist belt without unbuckling While right hand grasps waist belt buckle and left hand grasp cylinder at the rubber bumper, twist the entire SCBA assembly as far left as you can to clear obstacle Use right hand to guide though obstacle After passing obstacle, redon SCBA SWIM Move • • • Place right knee, right shoulder, and head through studs (place left shoulder though first may cause low pressure hose to get pinched on the object you are trying to pass, cutting off air) Bring left arm over left should in swimming motion Once though continue search for means of egress Damaged Face Piece • • • • Leave Face piece ON to provide respiratory protection Conserve as much Air as possible by covering damaged area with one hand If leak is more than can be controlled with one hand • Continue to cover • Press the manual shutoff switch after each breath to further limit the loss of air • If damage is too large use purge valve in an ON and Off motion for each Breath Notify Officer and leave contaminated Area – MUST be Accompanied to a safe area by another member donning SCBA Face Piece Sharing • • • • • SHARING FACE PIECE WITH OTHER MEMBERS OR CIVILIANS IS PROHIBITED! Remove member from Area immediately if not possible then For trapped members utilize nearest available Fast Pak For civilians utilize Fast Pak other than the one assigned to the the FAST unit. Utilize a spare SCBA to provide air strictly to the trapped member or civilian Communication • PLACE the MICROPHONE DIRECTLY ON THE VOICEMITTTER Emergency Touch Signals • When a member strikes another member with 4 distinct blows on the shoulder then pulls that member in a specific direction, he knows of an emergency Emergency Distress • Distressed Members should press Pak Alert – they MUST notify their officer and be accompanied to a safe area by another member using SCBA Emergency HT Communications MAYDAYS and URGENTS • • • Whenever emergency button has been pressed or Mayday or urgent are transmitted all HT communications are to stop except person and incident commander Press emergency alert button (EAB) button to boost power from 2W to 5W – 3 Mayday or Urgents Resume normal HT comms after emergency message • Anytime and building is evacuated units shall account for all members in preparation for a roll call by Incident Commander. Mayday Transmissions MAYDAY TRANSMISSIONS TAKE PRECEDENCE OVER URGENT When a mayday or urgent is transmitted, all HT traffic ceases except for member transmitting and IC Mayday Transmissions (I, O, U, My, Life) • Imminent collapse • Collapse has occurred • Unconscious member • Missing member • Lost or trapped member Missing Member Mayday Information (LUNAR) • Last known location • Unit assignment if a detailed member • Name of member • Assignment of member • Resources needed Member Trapped or Lost • Number/identity of members involved • Location or last reference point • Imminent conditions which may impact trapped member Urgent Transmissions (DCWIFE70) • • • • • • • Discontinue interior attack, begin exterior attack Change in conditions that could affect operations Water Loss (burst length etc.) Injury to member (non life threatening requiring medical attention) Fear of collapse Exposure (fire entering an exposure) 10-70 (cannot find a positive water source) Feedback Assisted Rescue: One member place two radios together and keys mike to create feedback. All other switch channels during operation so that only the endanger members radio sounds the feedback Unconscious FF Removal Webbing is only used for dragging victims, No vertical Lifts Webbing specs – 1” Nylon 20ft in length, breaking strength = 4,000 lbs, Knotted breaking strength = 3,000lbs. Should be inspected monthly and after each use. Transmit Mayday / Urgent, LUNAR, Update IC, get identification of the member to the IC, Secure the Removal Route. Once Member is Located – Follow FAIR – Fire/environment / AIR / Immediate Medical Care / Removal Fast Pak Should be requested to resupply air to member two ways – high pressure or low pressure. High Pressure is done though the UAC, if SCBA is in doubt DO NOT USE High pressure System. Low Pressure is done via – Fast Pak regulator with member's face piece, Hansen fitting, Fast Pak facepiece and regulator. IF NO FAST PAK start Removal procedure. Member in distress should not remove their facepiece. If no air, remove regulator. Removal – two types – horizontal and vertical. Identification Conscious member – Name, Unit working in that tour, assignment. Unconscious member – Activate EAB, position on right side, name on bunker coat, PRA identification number, helmet front piece, engraved Id on handie talkie. Packaging of a member – SCBA straps and personal harness, nylon tubular webbing, stokes basket, SKED stretcher. Fast Board – portable workstation shows members HT ID when communication. Activation of a member’s EAB will Identify them on the EFAS (Electronic Fire-ground Accountability System). Key the mic if you cannot activate EAB to identify them via EFAS. Methods of packaging an unconscious FF are: • Use of SCBA straps and personal harness • Nylon Tubular Webbing • Stokes Basket/Backboard • SKED Stretcher Prior to starting the removal procedure – face the members head toward the exit. ROPES Life Saving Rope Material Nylon Breaking Strength 9000lbs WorkLoad 600lbs Length 150ft – Shrinkage of 8 – 10 feet overtime Inspection/repacking - Engine companies = Every Tuesday 9X6. All other companies inspect/repack on Mondays 9X6 When soaked for 24 hours rope looses 10 – 15 % of its strength. Place Out of Service When Deputy Doubt Tony Two – weight of 2 people Hit Heat – 300 degrees looses strength; 482 melts A Abrasions Home Hockle - one hockle reduces strength by 40-50% Run Rust persistent wash first soap and water Far Frozen Away Acid or Acid Fumes Knots and Hitches Hitch – Temporary method of securing an object; easly undone Bend – tying of two ends together Eg Becket Bend Knot – tying parts of one of more ropes so they will not slip ie Bowline Bight – formed by making a loop in the rope Working End – part of the rope which is used to tie the knot Standing end – long unused port of the rope Binder – Secure a knot Three measured knots include: Bowline and a Bight 1.5 Arm length Rolling Hitch 1.5 Arm Length Bowline 1.5 Arm length with a 12" tail Usage of the Knots: Half Hitch – hoisting and lowering tools and equipment and a binder to secure knots Clove Hitch – hoisting and lowering tools, equipment and hoses. ALWAYS use Binder. Slipover Clove Hitch –hoisting hook, halligan, tools, extinguisher Bowline knot – hoisting ladders UP and IN DOWN and OUT Becket Bend – hoisting portable deluge nozzles over 60 feet Rolling Hitch – secure hose lines that were hoisted outside of the building. Hand Cuff Knot – drag a victim out by either wrists of ankles (Capt Fowler Knot) Bowline on a Bight – Lower FF to rescue people Slippery Hitch – Used in conjunction with Bowline on a bight to lower FF off buildings Clove Hitch and a binder on the Taught Part of the rope or Substantial Object Knot – used to tie off as an anchor point when lowering a member. Figure 8 Knot – tied at the end of a rope and keeps the rope from slipping out. Butterfly Knot – Make a loop in the middle of a rope / used as a tie off point or three dimensional pull Water knot with 1” Nylon - Assist in the removal of an unconscious member / Only be used for DRAGGING victims NO vertical lifts Nylon Specs 1” Nylong tubular webbing Length = 20’ Breaking Strength = 4000 lbs Knotted breaking Strength = 3000 lbs Personal Harness • • • • • • Members MUST attaché the harness snap hook to the waistband “D” ring EVERYTIME they don their bunker pants Personal harness has a minimum breaking strength of 6000 pounds Rappel hook has a triple action lock Belly Strap slide buckle is used only to ensure the proper position of the harness handle and rappel hook. The red waistband slide buckle is used to insure a snug fit. In a situation that dictates the use of the personal safety system only the handle support strap should be released. Snap hook and waistband D ring will be on the left side of the body. Inspection of Harness • • • • • • Start of each Tour and after Each use Look for cuts, abrasions, discoloration damaged stitching, operation of rappel hook gate If any abnormalities exit place out of service If persistent or unknown stains place out of service Do not Repair or modify If grossly contaminated place out of service Maintenance • • IF wet lay out to air dry – DO NOT lay in sunlight When dry re-inspect harness LSR Packing • • • • • • • Coil entire rope in a 4 foot diameter CLOCKWISE circle Place hook of LSR in Left Front Corner of bag Make 2 circles and coil in a COUNTERCLOCKWISE motion Remove 3ft of rope place antichaffing device on this section Tie a bowline on a bight Fold Antichaffing device and bowline on a bight and put it the rear of the bag Pass hook though top of bag and place in the pocket on top of the flap Care and maintenance • Clean bag with mild soap and water make sure it's dry • Each time rope is repacked pack shall be checked for dryness and cleanness. Anti-Chaffing device - 3-ply canvas – 5” x 24” inch long PSS System PSS system is a one time use system. PSS Inspection – at the start of each tour and after every structural fire REPACKED - semi-annually. Carbineer to the BOTTOM on the D-Ring Figure 8 stopper knot is used at the end of the 50ft PSS rope. 8” inches of rope must remain between the eye of the hook and EXO 18” inches of rope between the eye of the hook and bag ***MAYDAY must be transmitted prior to deploying PSS**** If conditions permit tying off to a substantial object is preferred. Hook load capacity – 5K at the Tip, 10K at the saddle Rope Type – Kernmantle – material = Technora sheath / core Rope Diameter – 7.5mm Rope Length – 50ft Rope Tensile Strength – 3034 pounds Working Load – 300lbs Anchor to a substatianal object if you can, use a 2 half hitches. Exit window – EXO must be brought to a point beyond the outermost edge of the windowsill. Leading with your right hand will be the most effective way to exit room. The forward roll eliminated the need to straddle the window and keep member in lower portion of the window below high heat. Left hand MUST maintain its grasp on the interior wall until the body is in an upright position. If conditions permit, member shall descend to ground level. High Rise Rescue pickup LSR bag is midway between the substantial object and the roof edge; Snaps facing the substantial object. Use a clove hitch and a binder on the taut part of the rope to secure the LSR to the substantial object. LSR MUST BE PLACED IN THE MIDDLE OF THE WINDOW when doing a high rise rescue pickup. The FIRST stop is at the top of the window - Tell the victim to stay put. The SECOND stop is when the member becomes eye-level with the victim Search Rope White nylon – Snap hooks at both ends Diameter – 5/16 inches or 7.5mm kermantle, Length = 200 feet (175' with all knots tied) • • • • • Rope is packed in a yellow carrying case marked with the unit’s number Rope is used to search large or maze like areas Not an LSR If more than 200 feet is needed a second rope can be snapped to the first One end of the rope is attached to a substantial object – Case is put over shoulder and deployed as you search • Rope may be short 25ft overtime due to shrinkage • The first 25ft distance knot will not have a direction knot, because it’s closer to the tie off. • Directional knots are within 18” of the distance knot. • Distance knots 6” from each other. • Officer plays out the rope. Maintenance: • Inspect after each use • Store in a dry compartment on the apparatus • Repack quarterly from the opposite end Dump bag make 4 foot counterclockwise circle with the entire rope. Snap hook to the bottom of bag. Make clockwise circles into the bag until the bag is packed. Pass hook through covers and snap to ring on the top of bag. Chemistry of Fire Fire Tetrahedron 1) Oxygen 2) Fuel 3) Heat 4) Self Sustaining Chemical Reaction Fuel – may be found as a Solid, Liquid or Gas. ONLY GASES BURN. ***Pyrolysis – a state change from a solid to a gas due to the addition of heat. *** Vaporization – a state change from a liquid to a gas due to the addition of heat. Gaseous fuels are the most dangerous, they are already ready for iginition. Products of Combustion – Heat, Light (flame), Smoke (unburned fuel). Types of Fire Transfer Conduction – heat from on body to another by direct contact. Think – fire in one room heat pipes up and causes a fire in another part of the building. Convection – transfer of heat by movement of air or liquid. Heated air in building will rise; fire spread is mostly in an upward direction. Fire spread though hallways, corridors, shafts in mostly convection. Direct flame contact Radiation – heat transfer by the air. Think - infra-red or the sun. *Heat is ALWAYS transferred from a high heat/high pressure area to a low heat/low pressure area. The Hotter the Smoke the Faster it will Travel Pressure Fire in a confined space will create a smoke flow from a high to a low Factors Affecting Fire Development Combustible content – Fuel load Oxygen Supply – Ventilation opening Size of Room Insulation of Room Phases of fire Incipient phase Earliest phase of the fire – actual ignition Flame temperature above 1,000F Rollover / Flameover Free burning fire Smoke and superheated gases collect at ceiling Superheated vapors ignite Flame rolls across ceiling Only gases are burned Last warning before a flashover Steady State Burning Phase High Oxygen Full fire involvement Thermally balanced Flashover Simultaneous ignition of all combustibles in room Ceiling/ walls stops absorbing heat Smoke and gases reach ignition temp 900 – 1300 FF Must be within 5 feet of an exit Hot Smoldering Phase Oxygen Below 15% Temperature throughout is high CO and carbon may cause backdraft Backdraft Air admitted into a superheated room Low Oxygen High Heat Smoldering fire High Fuel Vapor concentrations Fire Extinguishment theory • • • • Temperature Reduction Fuel Removal Oxygen Dilution Chemical Flame Inhibition Ladder Company Tools Hooks – 2 types Wood – pike end – non conductive Halligan hook – shaft metal or fiberglass Sizes – 6ft, 10ft, 12ft, 15ft, 20ft ----- 6ft is the most common Uses – Pulling ceiling, releasing drop ladders, venting windows Can – 100psi 2.5 gallons of water Axe – 2 types Flathead – used for forcible entry, carried with halligan known as a “set of irons” Pikehead – used by ladder chauffer Uses – cut floor and or roof at a 60 deg angle Halligan Tool – Carried by Forcible Entry or the roof and outside vent FF Pike Adz Fork End Rabbit Tool - 1) Forcible Entry – hydraulic hand pump 2) 25lbs 3) 4 tons (8,000lbs) opening force 4) Uses – Elevator doors and inward doors only NO AUTOS HydraRam - 1) Forcible Entry tool – hydraulic 2) Weight 12 lbs 3) 5 tons ( 10,000lbs) opening force 4) Jaws open ¾” to 4” 5) Inward and Outward door, trunks hoods etc K-Tool – Remove and or pull out lock cylinders Bolt Cutters – SHOULD not be used to cut though case hardened steel Duck Bill – forcing Padlocks Off Torch – Oxygen and MAPP gas Hydrant main shut off – 17 turns shuts off a hydrant - Aerial Ladders carry it Rungs – 14 inches apart Leg Lock – 2 rungs above the position where the member is standing Tormentors – hydraulic supports direct frame attachement Rear mount (100ft ladder) – 2 tormentors adjacent to turntable Tiller (100ft Ladder) – 2 tormentors adjacent to turntable Tower ladder( 75ft, 95ft) – supported at 6 points; each corner and two outriggers. Aerial Ladder USE L – Ladder pipe operations O- Observation post to assess conditions V –Ventilation E – Entry R -Rescue S – Search Aerial Ladder Placement Underside of the beam 2” – 6” inches from objective Roof – at LEAST 5 ft above where ladder comes in contact with the building Window – LESS Than 6” over the sill – recommended distance of the tip from the objective is 2” to 6” – Rescue should use 2” positioning. Alongside Fire Escape – Tip should be 1 -3 ft above balcony railing, against the building (2” out) Aerial Stretch Hose on the left of the aerial ladder. Officer – climbs ladder first enters windows, orders line, and water once enough hose is stretched. Nozzle FF – climbs aerial with nozzle under left arm over right shoulder. Enters window Backup FF – climbs ladder to the top rung of aerial and clips in. secure the hose with a hose strap. Doorman FF – middle of Aerial and snaps life belt hook on rung. Secure the hose with a hose strap. Control FF – positions to feed hose up ladder. FAST TEAMS 1 ENGINE CO (4FF) 1 ENGINE CO (5 FF) 1 LADDER CO (4FF) 1 LADDER CO (5FF) 1 ENGINE AND 1 LADDER (4FF) 1 ENGINE AND 1 LADDER (5FF) 2 ENGINE COMPANIES FAST UNIT O/S 2 FF’S DESIGNATED BY OFFICER CONTROL AND DOOR FF’S LCC & Outside FF designated by the officer LCC & OV CONTROL AND LCC CONTROL AND OV Backup and Control FF of 2nd Arriving Engine ENTIRE UNIT ASSUMES DUTIES OF THE SAFETY TEAM Ladder Company Operations First Due Ladder to arrive responsibilities Ladder company operations on fire floor Determine life hazard and rescue as required Roof ventilation and a visual check of rear and side from this level. Laddering as needed If second Ladder Company will not arrive within a reasonable time, make interior search and removal of endangered occupants above the fire. Second ladder Company to Arrive All Floors above the fire floor for search removal ventilation and to check for fire extension. Confirm roof ventilation. Check rear and sides of buildings Reinforce laddering and removal operations when necessary. Ladder Company Operations Size up ("COAL WAS WEALTH") Time – governs life hazard Life – Most severe factor to life Area – building or occupancy area Height – govern use of aerial,TL or Portable Ladder Construction – Energy Efficient Winodws, non-fireproof contains vertical voids that allow for extension. Fire escapes present? Occupancy – Determines the severity of the life hazard Location and Exterior of Fire – Fire in cellar, shaft or apt determine areas to be searched. Water Supply – hydrant availability Street Conditions – effective apparatus placement. Auxiliary Appliances – Standpipe / sprinklers location of outlets Weather – wind, snow, freezing. Apparatus and Equipment – Be aware of the units on the scene units assigned to the alarm. Exposures – maybe adjoining building or areas within fire building itself (auto exposure). Tenements – No Front Fire Escape – Fire in the Cellar, 1st and or 2nd floor ladder adjacent to and above the fire area. Tenements – Front Fire Escape – Raise ladder to first balcony opposite drop ladder, if more relieve is needed raise to second balcony. Tenements and MD’s with Rear Fire Escapes – relieve overcrowding with a gooseneck ladder to the roof. If Party wall Balcony present and adjoining building is on fire then bring ladders though the 1st floor to rear yard. Utilize 12’ hook ladder to gain access to various balconies. BrownStones – Typically no Fire Escapes – Laddering Front – Ladder should NOT be placed over front stoop, but to the adjoining window of it. Brownstones – Laddering the Rear – Ladder though the second floor of an adjoining brownstone butts facing rear of building. RowFrame transporting typically easier. 4th floor – 35’ extension ladder 3rd floor – 25’ or 35’ extension ladder 2nd floor – 16’ or 25’ extension ladder or 10’ -14’ “A” Frame Place Ladders upwind when Venting a window – placement of tip should be slightly above or level with the top of the window. Fire Proof Multiple Dwellings Tactics / Wind Driven When the Fire Apt door has been left open and the windows fail the Public Hall becomes part of the fire area. When moving down a public hallway of a Fireproof multiple dwelling hallways 2 2.5” hoselines may be needed when wind is opposing the hoseline advance. All efforts should initially be made from one stairway. Variables that affect smoke movement are – Height of building, stack effect, construction, surrounding structures, HVAC and WIND. Generally have 2 fireproof stairways, if smaller (4 – 6 stories) will have 1 fireproof stairway. With two stairways only the attack stairway will be the primary means for vertical ventilation. Only the Ladder Officer shall initiate a request to vent. All members must access the fire floor from the same stairway until the attack stairway has been determined. Flow path of fire will flow toward the stairwell. Height and Area: 4 – 40 or higher stories. Possibly an irregular shape, Double H, Star, Semicircular may have elevators compactors standpipes and sprinklers. First Floor – large stores, supermarkets, day care centers. Cellars and Basements – parking garages, laundry rooms, meeting rooms stock area, compactors, and incinerators. Elevators – only to be used when the fire is on the eighth floor or above. One elevator on standby in the lobby the other two floor below the fire. Take Elevators to at least two floors below the fire apt. Forcible Entry – adjoining apts may be forced for sufficient reasons such has high carbon monoxide reading. Must be on the same side as the fire Apt. Do not chock the door open until a charged hose line is moving into the apt. KO Curtain and WCD (Wind Control Devices) -Immediate reduction in heat and fire intensity. Reduction of visibility, possible autoexposure to floor above, advancing hoseline in fire apt POSITIONS and TOOL ASSIGNMENTS Non-Fireproof MD Positions Position 1st due Can Tools 6ft hook and water extinguisher 2nd due Can Same as 1st except for top floor fire take 2 6ft hooks 1st due Irons Axe and halligan or Maul and hydraRam (rabbit tool) 2nd due Irons Same as 1st due Irons 1st due OV 6ft hook and halligan. Variations: Top floor fire – go to roof with saw and halligan. If company is a TL with no fire escapes operate as basket FF for vent. Store fire – vent the rear of store from exterior. 6ft hook and halligan; does not take Saw to roof 2nd due OV 1st due Roof 6ft Halligan Hook, Halligan and LSR 2nd due Roof 6ft Halligan Hook, Halligan; Top floor Fires – saw and the halligan hook are taken. Whatever they want. 1st due Chauffer Duties Door to the fire area via interior stairs, forcible entry, locate fire, search and removal of victims Door directly above fire area via interior stairs, top floor go to adjacent apt. adjacent apt to the one above may be more severely exposed due to OLT Construction. Door to the fire area via interior stairs, forcible entry, locate fire, search and removal of victims Door directly above fire area via interior stairs, top floor go to adjacent apt. adjacent apt to the one above may be more severely exposed due to OLT Construction. Assist chauffer, exterior of fire area for horizontal ventilation after given permission. VEIS fire apt Assist chauffer, exterior of fire area for horizontal ventilation after given permission. VEIS fire apt Adjoining Building, Aerial Ladder, Rear fire Escape. Vent and probe Bulkhead, find way off roof, visually look for fire conditions. Front of building to raise and use aerial or portable 2nd due Chauffer Whatever they want, flashlight. ETC ladders for either rescue or roof access. Front of fire building, if not needed team up with 2nd due OV. Assist laddering with 1st to arrive ladder or vent and search if with 2nd due OV. Brownstone and RowFrame Positions Roof (1st due ) Roof (2nd due ) LSR, Halligan and Halligan Hook Halligan hook, Top Floor Fire: Saw and Halligan hook OV ( 1st due) 6ft hook and halligan OV ( 2nd due) 6ft hook and halligan Aerial, Aerial, Adjoining but not immediate for row frame. Roof of fire building, contact 1st due to determine method of access. Assist and confirm all duties. Assist LCC with laddering provide lateral ventilation for exterior of fire area after permission. VEIS fire Apt. if Basket used wait for completion of roof size up reposition basket to fire floor for vent. Same as first due except position is floor above and do not take saw to roof. Private Dwelling Positions Roof ( 1st due ) Halligan hook, halligan and LSR Roof (2nd due ) OV (1st due ) Halligan Hook and Saw VEIS area most likely occupied when teamed up OV (2nd due) Survey sides and rear. Roof of fire builing, vertical ventilation survey sides and rea Assist 1st due roof Assist the chauffer with any laddering needed vent the fire area when ordered Assist the chauffer with any laddering needed VEIS when teamed up TaxPayer Positions Roof (1st due ) Roof ( 2st due ) OV ( 1st due) 6ft hook and halligan – above cellar take saw and hook Saw and either an axe or halligan Maul and Halligan Vertical Ventilation communicate conditions found Assist and confirm all duties of first to arrive roof. Check rear and side provide OV (2nd due ) Maul and Halligan ventilation at rear enter and search when teameup with another member Assist the 1st arrive OV if not needed proceed to the roof or otherwise directed. FireProof MD Positions Officer ( 1st due) Search rope, CO monitor and TIC Can ( 1st due) 6ft hook and water extinguisher Irons ( 1st due) Axe and Halligan or Maul and Halligan & Rabbit Tool Halligan & 6ft hook or Axe OV ( 1st due) Roof ( 1st due) KO Curtain, Halligan and Rabbit Tool Chauffeur ( 1st due) Halligan and an axe Officer (2nd Due ) Search rope, CO monitor and TIC Can (2nd Due ) 6ft hook and water extinguisher Irons (2nd Due ) Axe and Halligan or Maul and Halligan & Rabbit Tool OV (2nd Due ) Halligan and a 6ft hook or Axe Fire Apt, Search and removal of victims. If wind fire remain in the stairway and follow wind impacted fire procedures. Fire Apt, Search and removal of victims. If wind fire remain in the stairway and follow wind impacted fire procedures. Fire Apt, Search and removal of victims. If wind fire remain in the stairway and follow wind impacted fire procedures. Conduct an outside survey with chauffeur including lettering in your report. If no outside operations take control of an elevator. If no elevator proceed to fire floor to assist inside team. Apt Directly above fire via attack stairway. Make sure stairway door is closed on the floor above. Gain entry into apt above. Check for victims showing at windows on fire floor. Notify officer of apt layout, conditions and wind. Outside survey, then to roof for search and ventilation with 2nd due chauffeur via evacuation stairway. Hallway on the fire Floor, confirm the attack and evacuation stairways, search hallways for five floors above the fire assist 1st due with WCD if needed. Hallway on the fire Floor, confirm the attack and evacuation stairways, search hallways for five floors above the fire assist 1st due with WCD if needed. Hallway on the fire Floor, confirm the attack and evacuation stairways, search hallways for five floors above the fire assist 1st due with WCD if needed. Contact 1st OV/Chauffer via HT, if outside operations in progress team up with 2nd chauffer if no take control of a different elevator if non go to fire floor. Roof (2nd Due ) Forcible Entry Tools, LSR, Life Belt Chauffeur (2nd Due ) Apt Directly above fire via attack stairway. Make sure stairway door is closed on the floor above. Gain entry into apt above. Check for victims showing at windows on fire floor. Notify officer of apt layout, conditions and wind. Assist and confirm all duties of the 1st chauffer if outside operations are in progress team up with 2nd OV. Wind Impacted Fires in Fireproof Multiple Dwellings Directly attack these fires with 1 or 2 2.5” hoselines. Five conditions must be present for a wind impacted fire to occur 1) wind 2) fire in an apt 3) failed or open window in the fire room 4) fire apt leading to the public hall left open or not fully closed 5) an area of low pressure such as an opened stairwell door. Air movement is known as flow path. Prior to advancing to the reported fire floor – all member must access the fire floor from the same stairway until the attach stairway has be determined. Flow of any fire will be towards the stairwell; control of the door is critical. High Rise nozzles greatly improve conditions in a wind driven fire. Flanking Strategy – application of water from inside the fire building to control the main body of the fire via a non frontal attack. Enter an adjoining apt breach a wall and apply the stream to the fire apt. Adjoining apt door must remain closed once operation has started. KO Curtain would normally be the first tactic used due to it’s availability and time it takes to deploy. Door to fire Area must remain closed until a charged hoseline arrives unless know life hazard exists. High Rise Office Fires Command Post – Typically in the lobby – enables the chief in charge of the fire control over evacuation, building systems and units. Fire operations – defined as the fire floor and one floor above Staging area – logistical support o and locate the floors below the operations posts. Search and evacuation post – enables a chief control of all operations above fire operations located if possible on a floor which is not service by the same bank elevators as the fire floor and at least 5 floors above fire operations. 1st Ladder Company to Arrive – Fire Floor to Entry, locate fire search for victims, obtain floor plan, keys evacuation so far. Chauffer and OV – conduct outside operations if fire in on lower floor. Chauffer may also have to remain in the lobby to establish the command post until relieved by the 1st arriving battalion chief. One member to operate the fireman service elevator. 2nd ladder to arrive – augment the first ladder company on the fire floor. 3rd ladder company to arrive – floor above the fire to search for victims. Determine best stairway to be used by occupants for evacuations to lobby command post. 4th ladder to arrive – the roof to determine vertical ventilation points, do not undertake roof ventilation unless ordered to by chief. High Rise Nozzle High rise nozzle to be used in wind driven attacks when interior handlines attacks are not possible (determined by the IC), when fire apartment is not accessible with outside streams ( Tower Ladder, ladder pipes, multiverse, or handlines from windows. ) Specs 1.5inch diameter - 8ft pipe with 68 degree bend and 2ft additional after bend. Supplied with a 2.5” hoseline Shut-off is permentantly attached Tip is 1 1/8 MST – should be checked weekly and during MUD and BEFORE use Will flow 200 – 225GPM at 50psi at the nozzle with standard 2.5” hose and pressure (3L = 70psi: 4L = 80psi) A shutoff should be placed one length back from the nozzle Every 10-77 that is placed should have at least 1 high rise equipped engine assigned 4th due engine is responsible to bring the HRN, Officer will have the engine company bring HRN, each FF grabs a length of 2.5” hose, the standpipe kit and the controlling nozzle and reports to the IC at the lobby command post. Putting the HRN into place will require 2 engine companies and forcible entry tools and a rabbit tool. A spotter on the outside equipped with binoculars, HT and will deliver how effective the HRN is to the IC and members operating. Companies will need to gain access to the fire apt below the fire apt. window bars and child gates should be removed, however it is not necessary to remove the window. Supply line to be attached before the nozzle is slip out the window. The supervising officer will maintain HT communication with the spotter to make sure the nozzle is being operated effectively. Lightweight Standpipe Hose The green 2” hose is only to be used for residential high rise fires and must be the lead length. With a 1” tip (green), may be used with the high rise nozzle. 200 – 210 Gpm at the nozzle Lightweight 2.5” hose is white with a double red stripe - uses a 1 1/8” tip– used with subway standpipe and commercial high rise operations. FDNY threads – you can use normal 2.5” hose to fill in if you do not have enough 2.5” light weight hose. When using the lightweight 2.5” hose, use conventional standpipe pressures (70 psi -3 lengths & 80 psi – 4 lengths) When using the 2” lead lengths utilize the following pressures. 80 psi – for 3 lengths 90 psi – for 4 lengths Engine pressure for 110 psi + 5 psi for every floor above ground level. Basic Construction Tactics Old Law tenements • • • • • • • • Built before 4/12/1901 Class 3 non-fireproof – brick walls wood floors 3 -7 stories Area = width ( 20 – 25ft) x Depth (50 – 85ft) Apts per floor = 2 to 4 Cellar entrance = combustible stairway to cellar is located inside the building beneath interior stairs. Secondary means of Egress – fire escape or party wall balcony Some have 4 apts on a floor – fire escapes on both front and rear New Law Tenements • • • Class 3 – non fireproof wood, masonry, steel 1901 – 1916 – Steel I beams used to carry floor joists 1916 – 1929 – unprotected steel beams used to support wood floor joists; supported by vertical steel columns. • • Floor areas broken up to into units 2500 SQFT of less some have fireproof partitions. After 1929 – cocklofts were downsized H Type Multiple Dwelling • Non fireproof subdivided above the first floor Year Area 1901 – 1916 35 – 50 wide x 85 deep 1916 to 1929 150 x 200 Apts 5–6 Vary – long interior hallways “L” or “T” shape After 1929 • • • Extraordinary dimensions though every 3000 sq ft was required to be enclosed by firewalls. Cellars – exterior entrance only – first floor cellar ceiling is fireproof Secondary means of egress – fire escapes 1 or 2 or all sides Stairways – near the front entrance other will be some distance away. Fire Proof Multiple Dwellings • • • • • • • • • Concrete floors cinder blocks or gypsum block walls Fires in buildings can be very hot – difficult to extinguish Two – 2.5” lines may be required to move down a public hallway to fire apt is open and wind and building air flow are opposing hose line advance all extinguishment efforts shall proceed initially from one attack stairway. 4 – 40 or higher stories Irregular shape clusters of buildings Secondary means of egress – two fireproof stairways Smaller building will have 1 First floor may contain – large stores – supermarkets clinics, daycares, offices Life hazard – no severe of fire apt when door to apt is closed. Rapid fire development potential Ventilation – prominent variables that affect smoke movement are • Height of building • Stack effect temp differential from outside to inside • Construction and configuration • Surrounding structures • Mechanical ventilation • WIND • When the fire apt door has been left open and the windows fail the public hall becomes part of the fire areas Ventilation procedure • • Ladder Officer in fire apt is the only one to initiate the request for additional ventilation Stairways other than the evacuation stair may be used for venting the fire floor, only 2 stairways attack stairway will be the primary means for vertical ventilation. Elevators • • Stairs to be used when fire is below the 7th floor Maintain 1 elevator on standby in the lobby and 1-2 floors below the fire to transport injured. Special considerations • • • • • • Cellar areas used as living quarters with no secondary means of egress Lack of secondary means of egress from upper floor – Control and management of the interior stairs is critical to a successful operation. Stairs to attic found behind small door looks like a closet Fires involving electrical service may energize aluminum siding Central air systems may spread smoke / gas Look under windows closely Three Boards of TaxPayers Older Type – built until 1920’s 1 -2 stores Wood masonry or just wood frame. Decorative metal cornices or small signs sometimes provide access to cockloft Built from 1920 to 1960 Larger in area – 1 tenant occupied supermarkets bowling alley Firewalls may be present: 2nd floor with separate occupants large meeting halls Removing cornice or sign will NOT provide access into cockloft area Built since 1960’s Combustible construction removed Steel bar joists to support the floor and roof instead of wood Floor and roof may be concrete poured on top of metal decking. Marquees • Hollow boxes which fill up with water – 12x24x4 deep can hold 35 tons of water Access to cellar areas • • Outside cellars are usually found in read of taxpayers Windows are normally below grade Cocklofts • • Usually in common area extending over all the sores in the structure Can vary in height from 4 inches to more than 6 feet Columns • • Made from wood,cast iron, lally columns, masonary Cast iron columns are unpredictable and fail on the average of 30 minutes Collapse • • Backdraft blowing out walls or floors Weakened for burned structural support • • • • • Heating unprotected steel Large amounts of water on floor or ceiling Impact load Water ice or snow on the roof Vibrations in or near structure Warning signs of collapse • Cracks, movement, rumbling noises, presence of heavy equipment, spongy floor • Sagging or bilging walls, heavy body of fire burning more than 20 min New type of constructions • Better than traditional or older type from a fire protection standpoint Exit Facilities • Older and new taxpayer exit facilities are poor Fire Extension Horizontal spread • Common cockloft • Flimsy partitions • Between the beams in ceiling • Via hanging ceiling • Via AC/ Heating ducts • Butted joists • Common ceiling • I Beams • Party Walls Vertical Spread • • • • • • • • • Via Ducts Pipe Recesses Through ceilings Via concealed spaces between furred plaster and brick walls Via voids Via open stair or trap door Convection Shafts light ventilation shafts from interior offices or bathrooms Stock conveyer belts or chutes High rise Office • • • • 75 feet or more Area = 2k to over 300k sqft Class 1 – non combustable Class E when used for transcating business – office space Heavy Weight – built before 1945 Medium Weight 20 – 23 pounds per cubic feet; structural steel encased in concrete 10-20 pounds per Floor were constructed of reinformed concrete Plenum type ceiling are generally not found Fire towers in all of Normally steam heated no centrally aired Exterior windows were open-able between 1945 1968 Light Weight cubic floor f these building 8 – 10 pounds per cubic foot Lack of compartmentalization structural steel usually protected by fireproofing Extensive plenum ceiling: have HVAC PORTABLE LADDERS • Sizes and types of Portable Ladders in use Extension Ladders Closed Length Weight Capacity 35’ 20’ 135lbs 600lbs 24’ 14’ 80lbs 500lbs 16’ 10’ 70lbs 500lbs Straight Ladders Weight Capacity 20’ 55lbs 500lbs 20’ with hook 50lbs 500lbs 12’ with hook 35lbs 500lbs Special Ladders Closed length Weight Capacity 14' 'A' Frame 7' 35lbs 300lbs 10' Folding 11' 16lbs 300lbs • LEG LOCK: LEG IS PLACED OPPOSITE OF THE WORKING SIDE AND TWO RUNGS ABOVE THE RUNG IN WHICH THE MEMBER IS STANDING ON. BUTTMAN REPOSITIONS HIS FOOTING. • Portable Ladder capacities: • Collapsible ladders: up to 300lbs load • Roof, straight, and extension ladders: (26' or less) up to 500lbs load. • Extension ladders: (27' – 35') up to 600lbs load • 65-75 DEGREE ANGLE OR ¼ WORKING LENGTH. • Do not climb higher than the 3rd rung from top in either straight or extension ladders. • Rungs are 14” apart (same as aerials) • DO NOT REPOSITION LADDER THAT HAS BEEN USED BY A MEMBER TO GAIN ACCESS TO A FLOOR. THAT MEMBER MAY NEED LADDER TO RETREAT. Only remove if needed for a rescue. • PORTABLE LADDER PLACEMENT: • AT A WINDOW TIP SHALL BE LEVEL WITH THE WINDOW SILL AT A ROOF AT LEAST 2' ABOVE THE ROOF OR PARAPET ALONGSIDE FIRE ESCAPE ON A BLDG WALL 1' – 2' ABOVE THE FIRE ESCAPE RAILING PLACE AGAINST A FIRE ESCAPE SLIGHTLY ABOVE THE FIRE ESCAPE RAILING FOR VENTING A WINDOW TIP ALONGSIDE TOP OF WINDOW Pros and Cons of aluminum ladders: Pro Con Lighter and stronger than wood Readily conduct electricity and heat Long life expectancy If subjected to excessive heat exposure, it may have lost its heat treatment AND will not show any changes on the surface. A discoloration may indicate a loss of structural strength. Will dent but not break • • Marking of portable ladders: • Straight ladders: ladder length shall be marked on each end of rails • Extension ladders: ladder length shall be marked at the butt end only of each rail of the bed ladder. Unit designations shall be marked within 18 inches of each butt end. Other uses for portable ladders: • Used to bridge a fence • Used as a barrier to protect civilians or members from injury • Used in a tower ladder basket. Used in extreme emergency situations to gain extra height in a life saving operation. • Forcible entry. • Ventilating Lexan windows. • Remove exterior screen • Place butt of ladder on window in corner adjacent to window frame • 3 or 4 members apply gradual pressure until forced inward. • If section of window snaps off, continue forcing around window perimeter until sufficient opening has been made. • Used a brace for partial collapse of floor area. • To shore excavations • For the rescue of victims who have fallen through ice in body of water. Ladder is lad flat on the ice (redistributes weight of rescuers over larger area) • Member performing rescue should be secured with life safety rope. • Elevator emergencies PLACING PORTABLE LADDERS AT FIRES • Tenements and M.D. • Tenements without a front fire escape: When the fire is in the cellar, 1st floor, or 2nd floor; raise the portable ladder adjacent to and above the fire area even if the aerial ladder will be used on the upper floors. • Tenements and M.D. with front fire escape: • First portable ladder on first balcony opposite of drop ladder. Second ladder on second balcony, same side as drop ladder. • Attempt to keep ladder away from panicked victim’s reach while raising and positioning ladder. • Tenements and M.D. with fire escapes on the rear of the building: • Overcrowding relieved by removing victims via gooseneck ladder on roof. • Brownstones (front of building) • Place ladder on adjoining window above entrance stoop. • Brownstones (rear of building) • Butt of ladder facing rear of building, using adjoining building (faster). Go through parlor floor and our to rear window. • Floor and ladder working length are: • 4th floor – 35’ extension ladder • 3rd floor – 25’ or 35’ extension ladder • 2nd floor – 16’ or 25’ extension ladder • Rowframes • Butt facing the rear through the first floor (this floor has a front and rear exit) VENTILATING VIA PORTABLE LADDER • Member mounted on ladder • Ladder is placed upwind from the window being ventilated. • Member’s eye shield in down position • Preferable to use 6’ Wooden Hook. Extend arms upward and slant the tool downward to strike the glass. • Using portable ladder to smash glass. • Full PPC donned. • Ladder should be positioned so that it will break desired window glass area when dropped against the window. • When ladder strikes the glass, there should be no contact between the member and the ladder (window glass may slide down rails of ladder). Care should be taken to insure that no other personnel are in the ‘danger area’ • As soon as the glass sections have fallen or are clear of the ladder, the member must stabilize the ladder to prevent its falling to the ground. SAFETY • Extension ladders should not be taken apart and used as single section ladders. • Never use upside down. • Never place ladder against windowpanes window sashes, or loose boxes, barrels, or other surfaces that may break or collapse. • DO NOT climb higher than the third rung from the top on either straight or extension ladders. • Resist temptation to overreach. Get down and reposition ladder instead. • Electrical current can arc and reach aluminum ladder. Watch for overhead obstructions. • Do not lower ladder by moving butt away from building. Doing so will: • Reduce load capacity • Possibility that locking assembly will fail. Always lower the fly ladder below the desired level and re-raise it in order to insure a safe 65-75 degree climbing angle. • When placing metal portable ladder against building with aluminum exterior, member shall release ladder prior to contact with the building. (Faulty electrical service connections due to fire) • When operating at electrical generating stations or substations, NEVER take metal ladders or tools inside. MAINTENANCE OF PORTABLE ALUMINUM LADDERS • At beginning of each tour, they shall be inventoried, slid out, and make sure halyards are properly fastened. • Visual inspection of portable ladders shall be made weekly and after each use. • Apply candle wax or paraffin every 3 months to all contacting surfaces. • 1 or 2 drops of oil once a year for pulleys. The rungs are always 14” apart • The longest ladder used is the 35” extension. It and the 20’ straight ladder require 20’ clearance to remove from back of rig. Leave at least 20’ behind rig to allow these ladders to come off. • Wood Ladders are carried by marine units. They are painted black with white hooks. The bottom 18” is also painted white. The hooks do not pivot like they do on an aluminum ladder. • Two Construction Types: Solid beam (Solid side rails) and Truss (Top and bottom rails connected to rung assemblies. Allows for greater load capacity without massive side beams) Advantages of Aluminum Ladders • • • • • Lighter in weight and stronger than wood ladders Long life expectancy – will not weaken with age Will not fail suddenly – will bend, but not break No protective finish is required Extension ladders can be adjusted to exact height required for accurate positioning and safety Disadvantages of Aluminum Ladders • • • • • • Conducts Electricity Conducts heat rapidly May weaken when exposed to heat May show NO signs of excessive heat exposure, or Discoloration may indicate a loss of structural strength If either occurs-notify Tech Services – OOS Ladder Climbing Angle Angle should be 65-75 degree for maximum strength. Ladders angled steeper than 75 degrees increases chance of falling. Angle less than 65 degrees require reduction in maximum loading. ¼ the working length = 65-75 degrees Working Length: Distance from butt end of the ladder to point where ladder is supported Ladder Placement Roofs – At least 2 feet above roof or parapet wall. Aerial Ladder – 5 feet above roof or parapet. Window – Tip shall be level with the window sill. Along side fire escape railing – Tip shall be 1 to 3 feet above the fire escape railing. Against the fire escape – Tip shall be slightly above the fire escape railing. Marking Portable Ladders Straight – 12 inches from each end on both sides of the ladder Extension Ladders – 12 inches from end of both sides, butt end only. Straight & Extension Ladders Unit # – 18 inches from end of both sides, butt end only Ladder length marking shall be visible when ladders are stored on the apparatus Portable Ladder Uses Rescue, Access and/or egress, Ventilation Hose Line advancement, Forcible entry, Bridging, Barriers, Salvage, and Transport of injured. Climbing Climb on balls of feet, Carry tool on outside of beam. When icy, climb on arch of feet, feet close to beams. Do Not climb higher then the 3rd rung from the top. Butt Ladder With left foot in center of bottom rung, right foot behind. If left unattended, ladder should be secured by 1st member to climb Halyard Rope used to extend ladders • • • • • • • • To get to rear of brownstone: take ladder, butt end first, through parlor floor of an adjoining building To get to the rear of a row frame, take ladder through ground floor of fire building Under no circumstances are aluminum ladders to be brought into a electrical generating plant Never place aluminum ladders against metal superstructure Butt man has his back to the building when raising and lowering ladder Raising man controls ladder when the butt man raises the fly with the halyard Stops: Limiting device on extension ladders to prevent fly from extending past bed section Ladder Locks: Locking mechanism that secures an extension ladder in the desired extended position by engaging the beams of the fly ladder to the rungs of the bed ladder Portable Ladders at Multiple Dwellings Fire in cellar, 1st or 2nd floor: Raise portable ladders adjacent to and above fire area Ladders at fire escapes If overcrowed raise ladder to the 1st balcony opposite drop ladder. If more relief is required, raise another ladder to 2nd balcony, opposite 1st ladder Operation From Ladder • • • • Place upwind from fire. Always butt the ladder if possible Safety • Always face ladder when climbing/descending • Do not climb higher than 3rd rung from top • Tie off halyard when extension raised • Extension ladders are not to be taken apart to make two straight ladders • Extension ladders are not to be used upside down • Don’t place ladders against breakable surfaces Maintenance • Wash with warm soapy water • Nicks/burrs can be removed with a fine file • Oil pulleys once a year (1 or 2 drops) • Remove/reapply grease on extension ladders • Apply paraffin every 3 months on extension ladders Inspection • Visually inspect after every use • Visual inspect weekly • Thorough monthly inspection Visual Inspection • Loose, bent or cracked rungs • Beams in alignment not twisted • Gusset plates tight and secure • Halyard not cut or frayed • Pulley operates freely / check ladder locks • Discoloration – sign of excessive heat exposure Carrying the Ladders • Fly section is always away from you • Suitcase carry – Short distances • Shoulder carry – Long distances Other Information • • • • • • • Ambulatory victims should descend ladder on their own When lowering a victim, stand one rung below the rung they are on. Descend in unison If victim panics, press them against ladder Victims should be looking up or straight ahead: not beams Unconscious victims: carry down with legs over shoulders. Hold beams of ladder Always carry small children down ladders. Maintain control with one hand on ladder at all times Small adult/large child can be carried down ladder Building Construction Bearing Wall: Wall that carries any load other than its own weight. Failure will cause a full or partial collapse Non-Bearing Wall: Wall that carries no load other then its own weight. Failure will not cause collapse Fire Wall: Wall erected to resist passage of fire from one portion of building to another or from one structure to another structure Bulkhead: Enclosed structure above roof level Parapet Wall: Portion of wall that extends above the roof Veneer Wall: Single thickness of brick, masonry for decorative purposes Beam: horizontal member that carries load perpendicular to its length Girder: Large beams Fire Cut Beam: Beveled cut at end of beam to allow beam to fall without damaging wall: No collapse danger Column: Vertical member used to transfer floor and roof loads to the foundation Joist: Closely spaced beams support floor or ceiling Cockloft: Space between ceiling of top floor and roof. Vary in size from 4” to 6’ Bays: Area between studs Old Law Tenement (OLT): • • • • • • • • • • • • Built up to April 12, 1901 Converted to railroad flats Rear and/or front fire escapes Cellar access through interior stair: Not always true Usually 20 to 25 feet wide 4-7 stories tall 50’ to 85’ deep Class 3 non-fireproof construction 2-4 apartments per floor Dumbwaiter shafts Possible SRO single room occupancy Collapse usually not a problem due to short width. Collapse usually occurs on building with prior fire damage New Law Tenement (NLT): • • • • • • • • • • • • Un-pierced cellar of masonry to prevent spread of fire Uses steel for construction: allows for larger buildings Cellar only accessible from outside Generally 6 to 7 stories 35’ – 50’ width 85’ depth 5-6 apartments per floor Large cockloft area Buildings after 1916 Steel beams and steel columns Dumbwaiter shafts Elevators Railroad Flats: • Apartment that spans the length of building • Can enter in from and travel to rear of building in same apartment Returns: • • Four walls that surround the scuttle/skylight. Open up to check for fire. Do not open returns remote to fire as it can extend fire Brownstones: • • • • • • • • • • • • 12” of masonry between buildings Front stairs lead to Parlor level (2nd floor) 1st floor is the basement Skylight on stairs Also have cellars Do not generally have fire escapes Average 25’ wide Average 60’ deep Majority are flat roof with no rear parapet Access to roof via interior scuttle No bulkheads Fire are generally contained to one building due to masonry between buildings H-Type Buildings: • • • • • Large buildings, steel skeleton Inverted roof Built 1920’s through 1930’s Class “A” non-fireproof building Stairs in H Type • Transverse: Covers both wings. Hallway across throat • Wing: Only services one wing. No access across throat • Isolated: Service individual apartments Row Frames Characteristics: • • • • • • • • • • • • Types: 3 windows (Brownstone type) or 4 windows (OLT type) Biggest problem is the common cockloft Built in rows of as many as 20 or more buildings 2-5 stories in height 40’ to 60’ deep Constructed in 1800’s and early 1900’s No fire stops Balloon or brace framing Possible dumbwaiter Cellars may be common among buildings Common cornices may be present: adds to fire travel Access to roof via scuttle Horizontal Extension in Row Frame: • • • • Common cockloft (5’ to 6’) Common cornice Thin and flimsy walls between buildings Common basement Collapse Danger in Row Frame: • • • • • Brick and veneer facing Whole rear wall can pull down and collapse Side wall collapse Fire escape could fall off Heavy fire in cockloft can lead to roof collapse Steel I-Beams: • • • 100’ Length will expand 9 ½” when heated to 1000 degrees Will return to original size when cooled Can sag when heated as well High Rise Office Height – 75 ft or more Construction – Class 1 non combustable Three types of construction Heavy weight – built before 1945 20-23 pounds per cubic foot Steel encased in concrete Floor constructed of concrete Exterior windows are openable Exterior walls are masonry No Central HVAC Medium Weight construction 1945 – 1968 10-20 pounds per cubic foot Fire towers required in all of the building Construction is a mix Lightweight construction built after 1968 8 – 10 pounds per cubic foot Lack of compartmentation Steel protected by fireproofing material sprayed on Curtain exterior walls made of glass and metal Central HVAC Floors use lightweight concrete – Q decking Exterior windows unable to open Class E Communication Systems System required for all class E building to alert and direct occupant in the event of a fire, also to transmit an alarm to the FDNY. Fire Command station – location in lobby near elevators public address servicing all floors. Floor warden station on each floor with 2 way communication Manual fire alarm sending stations on each floor. Core Construction – elevators stairways and building support systems are grouped together in one are of the building, typically in the center or one of the sides. Second hose line may be used to prevent fire from wrappoing around the core which would endanger the operation of the first line. Curtain Wall – A non load bearing wall built between two piers or columns. Q – Decking – corrugated steel is used to support a concrete floor. Fire safety director – certificate of fitness from FDNY, knowledge of the Class E system and evacuation routes, must be present when more than 100 people are present in a building at one time. Is a civilian. Inverted Roof: Lightweight structure over roof to aid in drainage. Spongy when stepped on Scuttle Covers: At top of stairs leading to roof. Can be sealed shut Party Wall Balcony Fire Escape: Spans two buildings. No way up or down. Escape only to other building. Cannot be used to stretch hoseline Truss: • • • Bowstring truss Parallel cord truss Open web steel truss • • • • • • • Heavy timber – about 20 fee apart Lightweight wood truss If serious fire involves roof, firefighters should not cut the roof Steel trusses can fail in 5 to 10 minutes in fire Lightwood truss could fail as fast as 1:20 Held together with gusset plates Gusset plates penetrate wood no more than 3/8” Gypsum Roof: • If after inserting hook into roof you see white powder, gypsum roof. Inform officer and get off roof Types of Buildings: • • • • • • Class1: Fireproof – Concrete and steel Class 2: Fire protected – Wood lathe and plaster interior, masonry exterior Class 3: Non-fireproof – Class 4: Wood Class 5: Metal or fire-resistive wood Class 6: Heavy timber • Dumbwaiter shafts Voids: • • • • • • • Created by framework around steel I-beams Pipe recesses throughout structure Larger recesses in kitchens and bathrooms due to waste pipe Dumb waiter shafts used for new pipes and wiring Closets in MD constructed back to back and on top of each other Poor workmanship in closets allow for vertically and horizontal travel Unusual shaped buildings: voids created by squaring off rooms and hallways Balloon Framing: Void between floors allow for fire travel. Found in Queen Anne’s Platform Construction: Floor on top of floor eliminates voids. Natural firestop Brace Framing: Limits vertical extension by use of a girt Truss Construction: If one truss fails, it will likely cause failure of others Row Frame: Private Dwellings: wood construction with common cockloft created from inverted roof. Rapid and extensive fire travel Peak Roofs: Do not go to roof. Venting not a primary consideration Search Theory • • Most firefighter killed in flashover were actually lost and disoriented in smoke prior to flashover 70% of fire deaths occur in private dwelling fires. Most by smoke inhalation Primary Search (PRST) • Immediate search for life, Rapid but thorough and systematic, Dictated by room conditions • Primary, Rapid, Systematic, Thorough Fire Apartment • Conducted from floor level (low), Always check behind doors, Search to find the fire, then confine it • Communicate fire location to engine, then search from fire Floor Above and Adjoining Apartment Apartment directly above fire is given priority, search by 2nd due truck, primary search begin immediately upon entry Search Techniques • • Search to a secondary means of egress. Vent while searching unless it will have an adverse affect in the area Secondary Search • • • • • • • A thorough and painstakingly complete search to insure that no possible victims are overlooked May take days or even months for disasters Immediate fire area and floor above require both a primary and secondary search Truck that performs primary search cannot perform secondary search on same area Search thoroughly, down to floorboards Time not as important as accuracy Listen to civilians pleas Portable Extinguishers Class A Fire – Wood Cloth Paper and many Plastics – cool with water or dry chemical – Green Triangle Class B Fire – flammable liquids, gases, greases – smothering most effective – Red Square Class C Fire – live electrical equipment – non conductive agent must be used –Blue Circle Class D Fire – involve burning metals, magnesium – dry powder carried by special units – Yellow Star Types of Extinguishers Pump tank Extinguisher – Class A fires, 5 Gallons, recharge after each use, range 30 – 40ft, pressure source – pump. Pressurized water extinguisher – Class A Fire, 2.5 gallons, range 30-40ft Recharge after each use, Examine Each Tour, pressure source compressed air 100psi. Pressurized AFFF Foam – Class A & B Fires, 2.5 gallons, range 30-40ft, Recharge after each use, Examine each tour. If not used within 1 year should be removed and used for drilling. 10 oz of 3% Foam CO2 – Class B, C &A (small surface only), Examine Each tour, Range 4ft, Recharge when expended loss of 10lbs of weight check every 6 months. Dry Chemical – Class B, C &A (small surface only), range 4-12 ft, recharge after use or leakage of air below operable, examine each tour. Purple K – Class B (particular effective at combating methanol fire), range 19-20ft, examine each tour, recharge send to RT-2 Forcible Entry Inward Opening Doors • Bevel side of the halligan next to door • Go past interior door jam • Apply driving force toward the door Outward Opening Doors • • • • Concave side of the fork halligan toward the door Drive between the jamb and door Force ADZ end away from the door Pry downward and out with fork end of he tool Forcing Locks • • • • • Attack locks 6” above or below For multiple locks, go for the middle between them Bevel end of fork to the door: Halligan wraps around door jamb Hand position of Halligan: Palm down at fork end, palm up at adz end Hydra Ram: Cannot be used on wooden doors, only with metal jambs • Steel doors with chain: Use bolt cutters if available. If not, go for hinges, top first • Outward opening door: Force with adz end Multi-Lock Door • Has 4 pins on each side of door for lock. Cut inverted triangle in bottom right quadrant, reach in to trip lock Fox Lock • Plate with 4 bolts around keyway • Use Halligan with axe • Using adz end, chisel three bolts, let faceplate hang by bottom bolts • Remove lock with k-tool • Turn lock to side with the two lower bolts Roll Down Security Gates • Electric: Motors drives gates. Pull access panel and short wires to operate • Mechanical: Chain used to operate gate. Cut padlock to operate chain • Manual: Gates raised and lowered by hand. Cut padlock to access American Series Locks (Hockey Pucks) • • Cut with saw (aluminum oxide blade) 2/3 from the key way If there are no side metal pieces protecting the Lock then you can open using a pipe wrench Curtain Cut (Vertical Cut) on Roll Down Gates • Two long cuts with one short cut in center. Pull out slats from middle and curtain will drop Triangle Cut • Cut triangle in gate. When starting second cut, leave 2 slats at top so that top of triangle do not fall and interfere with cutting. When second cut finished, cut the 2 remaining slats and the triangle will fall Four Steps for Forcing Doors • • • • Check: Try before pry Sound: Hit with Halligan to hear how many locks are locked Gap it: Ram with adz end of Halligan to make a spot for the fork end of Halligan Set: Place the fork end of the Halligan with the bevel side to the door Hydrant and Hookups Hydrants and Hookups Yellow 35FT soft connection 5inch hose 4.5inch butts Black 10ft soft suction 4.5inch hose 4.5 inch butts Black 10ft small suction 4.5inch hose 4.5inch butts White 50ft length 3.5inch hose 3inch butts Discs White – OOS Yellow – Frozen BLUE –Siamese Types of Hydrants Smith low pressure Black/silver 4.5 x 2.5 Indicates main size – underline = dead end main Dresser low pressure Black/silver 4.5 x 2.5 10-15% more water Chapman and eddy Yellow 2.5 x 2.5 Opens counterclockwise phased out Parkway and Expressway Yellow 4.5 x 2.5 Curb valve shutoff Air Cock Red 4.5 x 2.5 30” main or larger Satellite Water System Red 4.5 x 4.5 Avoid High Pressure Black/silver Multiple OOS SEARCH: • Flow path: the movement of heat and smoke from the higher air pressure within the fire area to all other lower air pressure areas both inside and outside of a fire. • Heat Release Rate: the rate at which energy (heat) is released by the burning of a fuel and oxygen mixture. HRR is a measure of the size of the fire compared to the thermal hazard or effects of the fire. • Ventilate, Enter (isolate), Search: • Ventilate: opening or removing a window creating a potential flowpath for fire. • Enter: via the open window which is now a flowpath for smoke, heat, and fire; isolate the room entered by closing the door to eliminate the flow path. Before closing the door, the member should check behind the door for life hazards. • Search: conduct the search of the room after isolating the from the flow path. • Ventilation Limited Fire: a fire in which the HRR or growth of the fire is being slowed because the fire is consuming the available oxygen and no new oxygen is entering the fire area. Note: Hydrocarbon based products burn at twice the rate as ordinary combustibles and generates 4 to 10 times the smoke production as ordinary combustibles. • Fires involving synthetic materials create new challenges. An area can become untenable in as little as 1 ½ minutes after entry (ventilation) • Primary Search: • Rapid but thorough and systematic • The responsibility for primary search on the fire floor or in the fire area lies with the first due truck. On the floors above the fire, in a NFP tenement, the second due truck has the responsibility for the primary search. • Secondary Search: • Thorough and painstakingly complete search, to ensure that no possible victims are overlooked. • • • This secondary search must include the perimeter of the building and all shafts, basements, and cellars, etc.. A secondary search must be performed by a different company than the company which performed the primary search. Where and when to search? • All buildings should be searched, within the limits of safety. • Searching through a door: • If the engine company has a charged hoseline, the door to the fire area shall be left open with a door chock. • If the engine company does not have a charged hoseline, the door to the fire area shall be closed. Vertical Ventilation – Opening of existing roof covers, skylights, bulkheads doors or scuttle covers and or cutting a hole in the roof. • • 3) Allows for more extensive search above fire area. Relieves public halls and stairs of smoke and heat to allow for aggressive interior attack. Limits horizontal spread and control easier Lateral (Horizontal) Ventilation – Opening of windows of fire area to; • • • Permit rapid advance of the attack line to the immediate fire area Reduces danger of heat and or flame passing over or around the attack line Makes search easier on upper floors as well on the fire floor. Vent for Extinguishment – Controlled and coordinated ventilation tactic with Engine, Water must be on the fire. Vent for Search –Horizontal Ventilation tactic to help allow search for life hazard; inherit risk to pull fire toward the ventilation point. Do Not Perform Lateral Ventilation without permission from your officer Ventilation operational procedures – • Windows should not be opened in or around the fire area until partial or complete extinguishment as begun. • When venting fire escape never vent a windows that could allow fire to off line of retreat. Cutting the Roof • • • • • • • • Prior to cutting the roof initital ventilation should start with windows, skylights ETC. Cut a hole directly over the fire area determine location by looking for soft spots, melting snow or ice, steam or dry spots, since of touch on vent pipes, HT communications and knowledge of fire location. Use Saw with carbide blade Wind should be at your back Leave remove pieces next to hole. On Flat Non Fire-Proof Roofs with the exception of Tax-Payers a 3x6 Coffin cut should be used. Tax-Payers use an 8 x 8 Peaked Roofs cutting and opening the roof is usually not considered an initial operation. Basic Standpipe Operations Primary Factors that affect standpipe operations are Height and Area. Standpipe Systems are needed over 75ft All standpipes are 2.5” use a 1 1/8MST Standpipe always supplied with 3.5” Always remove PRD (Pressure Reducer Device) if found on the standpipe. 1st and 2nd due engine will always operate together one first hose line 3rd and 4th due engine operate the second hose line Inline pressure gauge should ALWAYS be used 2nd hose line needed on fire floor should be stretched from two floors below. Pump Discharge pressure each hose attached is 100psi + 5psi per floor Officer and Control FF from the 2nd due engine company should relieve the first due control FF at the hose outlet and communicate with the first due engine officer. 3 lengths = 70Psi 4 Lengths = 80Psi Use Pressure Position for standpipe operations If 1st due to supplying both standpipe and sprinkler systems the second and third due engine companies must stretch additional to augment both systems. Sprinklered building is not equipped with standpipe system – first line stretched should be handline Sprinkler system control valve should only be shut down from the IC Red – Standpipe Green – Automatic Sprinkler System Aluminum – Non-automatic sprinkler or perforated pipe Yellow – Combination Sprinkler / Standpipe Methods to overcome difficult Siamese connections • • • • Twist hose 4-5 turns insert and turn to right Insert double 3” male, attach 3” double female swivel and insert Insert Siamese 3” x 3” x 3” Tap Swivels to loosen paint dirt StandPipe Kit G – Gauge C – Chocks I – Increaser A – Adapter N – Nozzle P – Pipe wrench (18”) O – operating Wheel S – Spammer Wet Pipe – contain Water in the riser and piping at all times Dry Pipe – filled with Air or nitrogen is under pressure, installed due to danger of freezing. Deluge – opens upon an electrical signal received from smoke or heat. Found in aircraft hangers. Combination – sprinkler / standpipe can be either wet or dry Sprinkler System control Valves may be one of the following, • • • • Outside Stem & Yoke Post Indicator Valve Wall indicator Valve or Wall post Indicator Valve Butterfly Type Indicating Value ECC – Connect pumper to hydrant and charge pump Control FF – proceed to floor below or in hallway adjacent to stairway door containing standpipe with straps facing up and mal and female hose butts adjacent to each other, the fire with a folded length of 2.5” hose and the standpipe kit. Nozzle FF – connects hose butts between lead length and second length Backup FF – connects hose butt between second and third lengths Fire Escape Stretch Used when the interior stairs to a building are in doubt like in a vacant building with damaged interior stairs. Methods to hoist hoseline – utility Rope / 6ft hook Hook hose strap floor below then every other floor after that Utility Rope Stretch Nozzle FF – Directly to the Fire floor Control FF – Ties off nozzle to utility rope and the nozzle FF pulls up the hose to the fire floor. Engines should carry 75ft of 3/8 inch nylon Use Utility Rope Stretch when • Roof of Low building Ie brownstones, taxpayers, three story frames. • Vacant building with interior stairs missing, • Building with winding staircase around an elevator shaft • Fires requiring three lines • Non standpipe project building • When CIDS or previous knowledge indicates its use. Officer will determine this type of stretch would be beneficial. The line is stretch as followed, • Officer proceeds to the floor below the fire with rope selects the window to be used and communicates this information to the control FF. Rope is deployed from this window. • Lengths must be brought into the lobby and the folds arrange near the window selected by the officer. The nozzle FF attaches the rope to the nozzle places the nozzle outside the window then proceeds to the floor below the fire. • Backup FF will join the nozzle FF when relieved by the control FF. The Control FF must remain at the window until enough line is hoisted to ensure that the line does not get hung up. Once the line is charged the control FF will check for kinks and join the nozzle team. 6ft hook hose stretch method. Control FF – Placed nozzle on the hook and pass it up to the first balcony (the Door FF). Will Always remain on the ground in both cases. Nozzle FF – to the upper balconies and awaits for the nozzle to be passed up. Once nozzle gets to the Fire floor nozzle man secures the hose with a hose strap and tell the rest of the FF to secure their hose lines. Door FF – on the lowest balcony and pass the hook with the hose up to the backup FF. helps lighten up the hoseline as its being hoisted. Can also secure to fire escape with a hose strap. Backup FF - positioned right below the nozzle FF. Once positioned below the fir floor he Pulls up the extra hose to operate within the fire area. Notes Hose line to be secured with hose straps beginning with floor below the fire and continues with every other. Hose strap is passed around the hose and though loop of the rope, pulled taught and brought over and under the fire escape railing and then hooked on the strap. Fire Below the 4th floor and the line is stretched up the well of the fire escape. Prior to charging the line members must position themselves between the dry line and the building not the dry line and fire escape. Car Fires / Alt Fuel fires Car Fire – 1 engine and 1 truck from EACH DIRECTION , unless fuel spill on a grade. Flashlights are mandatory at night Car engine fire – do not operate hand line though front grill, Always approach from the sides. Magnesium parts on fire use a coarse stream. Always wear high visibility vests, unless operating near a fire then proper PPE should be worn. Methods of opening a trunk are – Bam Bam tool, drive out cylinder with a halligan and turn with screwdriver, cut around the bezel rink, entry via rear seat, extinguish from the tail light. Always cool hybrid high voltage battery pack(144V – 330VDC). Do not cut HV cables (Orange/ Blue). Hydrogen Gas near all Batteries. Never position yourself in-front of the front or rear bumpers due to shock absorbing bumbers that could become projectiles. OZ-12 for Air conditioning is flammable. One engine, one ladder and a battalion chief will be assigned to all express highway incidents in EACH DIRECTION. All Members must wear high visibility vests, day or night. Unless donned with bunker gear in close proximity to fire. Always disconnect negative terminal first. Always connect last. NEVER Cut orange high voltage cables on a hybrid. Always cool down gas tanks and high voltage battery case. Dry pavement fully loaded tractor trailer to stop from 50Mph = 500ft after driver perceives danger. Passenger car at 70Mph needs 500ft to stop as well. Apparatus placement – Usually to rear of the incident unless accident involves with flammable liquid tanks on a grade. Ladder should always block the engine to provide safety for members working. If needed close down roadway. BLEVE = Boiling Liquid Expanding Vapor Explosion / propane powered passenger car. Flares • Furthest flare should start 2’ from the edge of the roadway moving inward 2’ from the last until lane is closed. • Only use Flares when there was is no flammable liquid spills • Formula Example = (60MPH x 6 ) + 60 = 420 Note: Always PLUS 60 • 4-6 flares to block 1 lane Opening the hood / trunk • Stand to side NOT in front • Charged hoseline should be in operation • Use a 6ft hook to open and keep open. Methods of opening a trunk • • • Drive in cylinder with a halligan Pull out the cylinder with a Bam-Bam tool Cut around the bezel ring on the cylinder, then turn the cylinder with a screw driver. COMPACTORS / INCINERATORS Compactor – Put the fire out, plastic bags on sidewalk indicate compactor. Found in apt building. Incinerator – Clear the blockage, steel cans filled with ash indicate incinerator. Found in hospitals and govt building. Incinerator operations Officier, FE Team, and OVM – operate inside building to VEIS and locate blockage. Search floors above and below blockage. Roof FF – Chocks lobby door, opens bulkhead door on roof. Vent stairways and check spark arrester for blockage. Chauffer – duties vary, check incinerator room, operate fans to improve ventilation. Engine company – stand fast in lobby with masks, roll ups and standpipe kits. Compactor Operations Compactor room – should be fire resistive, have a fire door, and an automatic sprinkler. Chute Fire – 1st engine goes one level above burning material, stretch a line and operate into the chute to extinguish the fire. Ladder OV - works with Engine to look for extensions. Officer, can and irons - operates in the compactor room. Shutoff will be on the wall in the compactor room. Roof FF - to the roof to vent. Fire in Compactor Unit – Engine stretch a line to the first floor and operates into chute. OV – operates with engine to provide access to the chute Roof FF – proceed to the roof for vent, search and vent stairways floor. Officer, can and irons - operates in the compactor room. Shutoff will be on the wall in the compactor room. Types of compactors – Electrical (210V), Mechanical 50K packing force), and Hydraulic. Foam How foam stops fire - Smothering, Suppressing, Separates, Cools Typically used on all types of flammable/combustible liquid incidents. Types of Foam Fluroprotein (Brown) – 3% foam -not suitable for polar solvent, compatible with dry chem extinguishers. Adheres to metal surfaces, resists breakdown, superior in preventing re-ignition. Alcohol – Fluropolydol (Green) – 3% used for hydrocarbons (Gas) and 6% used for polar solvents (alcohols). Has superior flashback and burnback resistance. Good in all weather. Corrosive to steel. Hi – Expansion (Yellow) – used to control fires that are inaccessible or difficult to approach, indorr class A fires. Should not be used on alcohol or polar solvents, short drainage, poor burnback, bubbles large than low expansion foam, uses only 60GPM high pump pressure is needed (200psi – 220psi). AFFF (Black) – Faster Knockdown than protein based foam, can be used though a fog nozzle, rapid drainage time causes poor resistance to flashback and burn-back. No suitable for use on reformulated gasoline or polar solvents. Used in can – 3% concentrate 10oz with 2 gallons of water. Foam Proportioning 500 gallon booster – uses 3; 5 gallon cans of concentrate produces 3% solution, pumper should not be connected to hydrant. Ladder Companies – carry at least 3 – 5 gallon cans Engine Companies – carry 2 – 5 gallons of fluroprotein foam concentrate. Methods of applying foam • • • • Direct stream against side or back of the burning area Direct stream skyward in a slow back and forth motion (rain method) Directed at the ground in front of the tank in such a manner as to bounce the foam onto the burning surface. Direct stream on the ground ahead of the fire. Foam Carrier Apparatus 10 foam carriers in service, they carry no water, booster tanks filled with 1000 gallons of alcohol or protein based foam. Foam Educator – most common way to produce foam, 200 psi at educator inlet, must be placed at least 1 length from pump panel, up to 4 lengths between nozzle and educator. Flows between 95 – 120 GPM. Supply with 2.5” hose. BurnBack resistance – the ability to resist direct flame contact. Stages of foam creation Water + foam concentrate = Foam Solution (done typically by foam educator). Foam Solution + Air = Finished Foam (air is introduced by the aerator on the foam nozzle) Air Bags Avoid sharp objects and if over 225 degrees unless protected. Uses – Lift and move heavy objects, excellent on cylindrical and odd shaped objects, works well with hurst tool, saw, torch and air chisel. Requires only and inch for insertion. Two bags may be used for greater height, never more than two thou. Airbags have lifespan of 10 years Never work under a load unless its blocked and shored. Components – Air Cylinder (painted green), 3 – 16ft long hoses 1- yellow 2-red Can be changed during operation. 7 bags – from 12 tons (8.2”) – 74 tons (20”) rated height is based on the bags ability to lift ½ the maximum tonnage to a given height. Ie 12 tons bag can only lift 1 inch & 6 tons to 8.2”. When high pressure gauge falls below 200psi change air cylinder. When gauge reading reaches the vicinity of the red mark the safety relief will open (118psi) and start venting. Air pressure above 118psi inside the bag will vent. Normal working pressure is 135psi Hurst Tools Inspect Daily and after Each use Power unit Fuel valve Lever Must be in the OFF position 5-10-20 Rule – 5in from side airbags – 10in from driver airbags and 20” from passenger airbags First arriving officer must immediately notify the dispatcher when a person is pinned. Size up – Additional units, 1075 should be considered for several vehicles, downed electrical wires, gas spills. Types of vehicles, number of injuries, other hazards. Disentanglement – removal of wreckage from around the victim Extrication – physical removal of the victim from the vehicle. Do not CUT – Airbags, Airbags sensors and gas cylinders. Never Right a vehicle with a victim inside. Vehicles are stabilized the way they are found. Weight Length Width Height Max Operating Pressure Fluid Reservoir Mini Mate Simo Power Unit 60.4lbs 18.11 in 12.4 in 17.4 in 5,000 psi Hurst MOC II Cutter 47 lbs 30.9 in 9.06 in 8.9 in 5,000 psi Hurst MLT-32 Spreader 59 lbs 15.5 in 8.25 in 27.5 in 5,000 psi 0.92 Gal - - Cutting Force Cutter Opening / spreading distance Spreader Force Pulling Force - Up to 152,870 lbs 7 in 32 in - - Up to 31,500 lbs Up to 16,500 lbs Hurst MLT -32 Spreader – Used to Crush, Spread, Pull Lift, Pinch and Pry Objects • • Has an interchangeable tip system accepts a variety Dead man control valve reverts back to the neutral position if the users hands slips from the control MINI Mate SIMO Power Unit– is a 3hp motor that can power up to 2 tools at the same time without power loss. To Operate SIMO Power Unit Position. 1) Place Pressure / Dump Valve in the dump (HORIZONTAL) 2) Fuel valve must be placed in the on position 3) Place Choke lever in the closed position, Engine Throttle to max. 4) On/off Switch to the ON Position – Pull starter chord and move choke to open position. 5) Connect Tools place Pressure / Dump valve in the vertical position 6) To shut down place pressure dump valve in the dump position turn the switch to OFF. WHEN STORING PUT FUEL LEVER to the OFF POSITION. HURST MOC II CUTTER – Star Control valve permits toll actuation from almost any gripping position. Dead mans grips – no grip = neutral position. Engine company – Officer divide the company into two teams Officer and two CFR trained FF. Ladder Company – Officer and inside team proceed to the scene of accident to initiate a perimeter survey. Roof and OV – bring hurst tool to accident Chauffer – position apparatus to block off traffic Officer – ensure the disconnection of the battery Door Removal – Attack either the nader pin or hinge side; protect victim; with newer cars attach hinge side. Third Door Removal – make 4 cuts – top of B post, Bottom of B post, vertical cut rear of quarter panel, horizontal cut rear quarter panel at the rocker panel. Roof removal – Cut low on the A post, High on the B,C,D Posts and cut some portion of the windshield. Do not cut entire windshield. Dashboard Displacement – 1st cut on lower A post below hinge parallel to rocker panel, 2nd cut 6-8” above first cut, 3rd cut on the upper portion of the A post. Insert spreaders into void and spread. A relief cut in the front fender may assist the dashboard displacement. Vehicle on side – access via front or rear windows or cutting the roof with an air chisel. Vehicle on roof – access via front or rear windows or door removal, attach hinge side. Windshield removal - is done with either a windshield saw, a sawzall or an axe. Side/Rear windows – center punch or halligan to break tempered glass. Fast Radio Form Unit Type 1 – Rescue 2 – Command 5 – Engine 6 – Spare 7 – Truck 8 – Squad Unit Number Engine Truck Rescue Squad 1 – Officer 2 – Chauf 3 – Nozzle 4 – Backup 5 – Control 6 - Door 1 – Officer 2 – Chauf 3 – Roof 4 – OV 5 – Irons 6 – Can 1 – Officer 2 – Chauf 3 – Roof 4 – Hook 5 – Irons 6 - Can 1 – Officer 2 – Chauf 3 – Nozzle 4 – Backup 5 – Control 6 – Door PAC – Tracker Inspect at the start of each tour and after each use. Low battery = 20% will operate for 1 hour after low battery goes off. Rechargeable battery. 2 hours to charge. Battery charger flashes red = defective battery; Yellow light = standby mode; fully charged = solid green. Do not douse the Pak-tracker with liquids. Pac-tracker is used to locate an SCBA whose PASS device is in Full Alarm. Is currently carried by Rescue and squad companies, Rescue battalions and safety battalions. Shall be Max Range of the personal transmitter to Pac-tracker receiver is approx 950 ft dependant upon environmental conditions that may cause interference or reflection. Turn on Pac-tracker by hold both the Enter(right) and Scroll(Left) buttons at the same time. Can Store up to 36 SCBA Identities, LCD screen can display two. Once locked onto a signal it cannot receive any additional PASS alarms. Once Pac-tracker receives a signal member monitoring must notify the IC with the identity of the member and unit. When IC decides to use Pac-Tracker only trained members will be used. To Track a member press the Enter Button ONCE. If multiple PASS alarms go off press and hold the scroll button for 3 seconds and hold until the person you want to track appears. Release the Scroll Button and press Enter to Track. To change which SCBA to track Press and hold Scroll button for 3 seconds. Sweep Pac Tracker in a horizontal direction first then if suspected sweep vertically. Pac-tracker Signal will pass though – windows, gaps, holes, elevator shafts, wood light building materials. Pac-Tracker signal will NOT pass or Reflect though – Metals, structural framework, concrete walls or floors, brick or concrete block construction. It will however attempt to pass around these objects. Mass Decon Purpose of Decon • Removal of the agent from the victims skin and clothing to prevent any additional exposure. • Protecting responders and medical personnel from cross contamination. • Providing psychological comfort to the victims by removing contamination. Exposed people need to be removed from the area of release to a safe refuge (But Still in the HOT ZONE). A Safe Refuge is an area that is physically removed from any contamination. Establish a “Gross Decontamination Corridor” – Processed contaminated victims from the hot zone or safe refuge will go to the cold zone. The corridor purpose is to remove the contamination on the skin and clothing by removing clothing and washing skin with water and soap if available. For a FF wearing full PPE the percentage of contaminationed that is eliminated by removing clothing is higher than 90%. When removing Bunker gear the last piece to be removed is the facepiece. Factors that will affect which decon procedure is used are, impact of weather conditions on the water spray for decontamination, PPE available to members. • 2 - 2.5” handline equipped with aguastream fog nozzle (operated with a fog stream). Pressure Range is 50 – 80 psi, distance apart is 25ft – 30ft. • 2 pumpers – each facing the opposite way from each other (passenger side facing each other). 25ft apart. Aguastream Fog nozzle is attached to the discharge gate. 50 – 80psi is the pressure range. • The third option is to utilize – 2 pumpers and either a Tower Ladder with a turbomaster fog nozzle or an aerial ladder with a ladder pipe and aguastream fog nozzle at the edge of the water spray. If no ladder than a 3rd pumper can be used. Water spray with this config is 20ft wide by 30ft long. Quick Decon with immediate life threathing exposure – fog nozzle can be attached to the multiversal on an engine or TL. When victims exit water spray they meet EMS HAZ-TAC who will evaluate them. Primary route of expose is from inhalation – SCBA should be adequate protection. If Decon officier deems necessary than operating members must wear Chemical protective clothing Secondary / Personal Decon Secondary Decon is more complete, time consuming, requires brushes,soap, water (sometimes heated). FDNY Special ops/Haz-Mat deploys several different shower systems. CPC Ladder companies,HMC1 ,HMTU carry water containment tubs and garden hoses Air inflatable tents with designed in shower hoses and portable water heaters are carried by HMTU and SOC. Thermal Imaging Camera Inspect at each Roll Call and after each use. Shiny surfaces will Reflect IR – creating a mirror effect Does not See though clear glass or plastic Depth perception is normally NOT 1:1 RFI – will cause TIC malfunction Shall be carried and used at all structural fire operations by all units equipped with the tool. Carried by Ladder,Rescue, Squad, and Hazmat Companies The TIC is a tool and shall be used as an adjunct to not a replacement for the established firefighting procedures and practices already in use. Black - indicates the least amount heat. White - indicates the most heat in the surrounding area. Red/Oranage – shows specific temperature ranges. LOW CONTRAST – occurs in cooler area where images maybe difficult to view. Overall area by have little or no contrast appear darker. HIGH CONTRAST – higher heat will show a sharper image as everything in that area absorbs the heat. Change in thermal contrast – as conditions change from cooler to hotter. Changing thermal contrast may indicate close proximity to the fire. Convected heat – will appear at White swirling waves or smoke by the ceiling because heat rises. Uses • Interior - search and rescue operations • Fire suppression operations – handline placement, • Roof operations – ventilation, extension, navigation, FF accountability. • Overhaul operations – location and extension • Odor of smoke/evaluations – chimneys, flues, duct fires, brush fires • FAST Truck Operations – follow hoselines, locate missing or downed member • Emergencies – Electrical, motors, circuits, Ballast, person in water, woods, • HAZMAT – spilled liquids, some vapor clouds, liquid level in container. Tactical Applications Initial size up – fire locations, fire extension and location of people at windows obscured by smoke. Interior Search and rescue – stay low and slowly scan the area start at the ceiling and go side to side. CARBON MONOXIDE Visual (1sec red light) and low audible warning (every 1 sec) with a slow vibration (every 1 sec) is give off when concentration of CO Exceeds 35PPM Visual (1/2 sec) and high audible warning(every ½ sec) with a fast vibration (every1/2 sec) is given off if the concentration of CO exceeds 100PPM The left button is the only button to be used by the field units – all other buttons for fire tool and equipment use. To turn off monitor press and hold circular button on left for 5 seconds. Units is water resistant with a concussion proof housing. Calibration is done every 6 months. Low Battery – 1 beep every 5 seconds, 1 flash every 5 seconds, 1 quick vibration every minute – screen will display low batt on it. RAD 50 Radalert should be in the audio position for proper operation. Mode needs to be in the mR/Hr position Alarm level should be SET at 1.00 mR/Hr Backround radations is normally .02 - .05 millirems per hour. Maintenance – every 3 months battery (9v) should be changed – January 1st, April 1st, Oct. 1st All reports should be communicated to the IC or Hazmat group to be determined if it’s a radiological incident or a radiological emergency. Above 1.00mR/Hr a circular pattern should be used to determine the size of the isolation zone, the Hotline or Hot zone should be established at a rate of 2 mR/Hr and marked with a red “hazardous material” barrier. All elevated levels ( .05 - .9 mR/Hr ) should be reported by the officer on duty to the hazmat operations. Elevators Incident – A stuck elevator with trapped passengersd not in immediate danger and no evidence of injury. Emergency – A stuck Elevator with passengers either being endangered from fire, injured or panicking. All initial techniques are the same for emergency and incidents, although additional removal techniques are acceptable in lieu of waiting for assistance of an elevator mechanic. Ventilation opening is the Smoke Hole Do not step on it. Members should be equipped with the FE tools and HT Location of the car • Locate the car by lobby panel – check floor indicator • Communication with the passengers via the following methods, elevator car telephone, intercom, yelling up hoistway or though car doors. Make sure emergency bell is deactivated. • Open the hoistway door and look up the shaft for the approx floor. • Couterweight location – 6 story building with service to the elevator, if the counterweight is on the 1st floor the car would be on the 5th floor. • Enter a car in the same bank and open the top hatch • Look at the floor selector in the machinery room to find the exact position of the elevator car. Primary Removal Procedure This is be the start on all emergency and incidents. This is a simple approach without turning off the elevator power. Electrical is the most common cause of problems, most common are car or hoistway door contacts open, blown fuses, shorting of electrical cables. The following can be expected with electrical problems, elevator will be suspended on hoistway cables and brakes applied. • Check elevator contacts, deactivate emergency stop button. • Passenger – press door open button if car is level with the landing. • Press lobby call button • Passengers – check door to make sure they are fully closed, push towards close position • Have members physically close all hoistway door on the shaft. Check hoistway doors in the vicinity of the stuck car. • Activate Firemen Service – this will override the emergency stop button. The key is a 1620 key • Deactive the firemen service when the car return to the lobby. • Call the Elevator mechanic – move on to secondary removal procedures. Secondary Removal procedures. • Power Removal is done for all secondary and emergency removal procedures. • Two members to the elevator machinery room to shut off power • Determine which shaft and power switch to cut. • Remain by the power switch throughout the operation to insure the power is not restored. • Upon completion DO NOT restore power to the stalled CAR. • Prior to removal of passengers the power must be off. • Between floor – take them UP AND OUT. • Memebers operating in the shaft should be secured by the LSR • DO not go in the shaft below the car or jackup in an upward direction or adjust breaks. • If breaks are doubtful place heavy timber or iron bar in the elevator spokes of hoisting drum to secure or secure to structural member via utility ropes, chains or shoring. Secondary Removal Operation • Remove passengers via elevator car and hoistway door using elevator key • Passengers of the stuck can help by attempting to open the door by extering force on the open position. • If elevator has two speeds (building over 10 stories) system can be reset by shutting down and restoring the power. It the car is to restart it will do so in 10 seconds. Deactivation of Estop button should have been done prior to PRIMARY PROCEDURES. • If car is stuck in a multicar hoistway – POLING can be used. Types of Elevator hoistway Doors • Center Opening Doors • Swing Doors • Single Slide Doors • Two Speed Elevator Doors Emergency Removal Procedures Primary and secondary procedures are faster than emergency removal procedures Power to stuck elevator must be off when you use Emergency removal procedures. Top Hatch Removal • Lower ladder – no more than two FF at a elevator roof of the car at one time. • All member working in the shaft are to be secured with the LSR • Member remain in physical contact with trapped persons while they are being removed. Side Exit Removal • Members must work from a car in the same elevator bank and is adjacent to the stuck car. • Remove power to rescue car – place planks 6ft of longer to bridge cars • Member are secured to HT and LSR • Secure All passengers with LSR • After rescue is done restore power to only the rescue car. • Forcible Entry is the last resort Hinge Door • Knockout glass breach shaft • Push down roller – open hoistway door than elevator. Slide Type Doors • Maxi force air bags – preferred forcible entry less likely to push doors off track Elevator Pit Operations Types of Pits – Jump pits & Walk In Pits Jump Pits – 4 - 6ft from the lowest landing Walk in Pit – 6-10ft access to pit is via a door located at the bottom of the shaft, door will not have an interlock switch. Fireman Service Fireman Service – 1620 key or a 2642 key – located within 4ft of the lobby call button. Key Switch - 1) On lobby floor – Normal and FF Service • All other floors – Normal, FF Service, Door Open Hold Position – permits FF to remove 1620 key from the switch, leave car without danger of an individual moving it. Moving a car with the 1620 key must inform all FF operating on the floor Lobby keyed switch must be in the FF service prior to placing the car keyed switch to fireman service. Recall Phase – All elevator in the bank will go to their home position Estop button do not work during a recall. When elevator car reaches its floor using the 1620 key the elevator doors will remain open for at least 8 seconds and no more than a minute. To test Fireman service – hit close door button, select a floor, once car moves press call cancel button to verify operation. If it does not work abandon elevator at the next floor. When an elevator car is in fireman service it shall be operated with a FF equipped with a HT and forcible entry tools. Fire on the 7th floor or below units should avoid the use of elevators. Do not use an elevator in a bank which services the fire floor if a lower level elevator comes within 5 floor of the fire. When using an elevator put into fireman service – go at least two floors below the fire floor. Service elevator shall not be used until it is declared safe for use by the officer in command of the fire. No more than 6 members shall be permitted in any elevator car Elevators should be stopped every 5 floors to confirm that the elevators will respond to the selected floor. In extreme emergency FD hose can be used to slide down to the floor below if more than 1 length tie off then couple together. If an elevator does not have a fireman service installed use the elevator in manual mode. Members should never take a fireman service elevator which services all floors to go above the fire. Use a fire tower or a stairway other than the attack stairs. Subway Emergencies FD Personnel will never be permitted to operate on track area unless assured that the power is off, unless there is a known life hazard. If power is not needed to be shut off, only the officer and the FF (operating as a team), will be permitted to use Catwalks and platform, but tracks shall not be entered. Until the fire is located engine companies shall not connect to a hydrant. All efforts must be made to place the initial handline before starting any backup handlines. Fire under the platform – 1) Power need to be removed 2) Confirmation of power removal by FD Dispatcher 3) Safety Members at each end of platform 4) Alt area of refugee is assured in case of train movement. Whenever FF are committed to a Track area FF shall be assigned in pairs to act as warning guards officer to ensure that they are posted at the perimeter. To halt traffic – use a light at chest height and move in a wide horizontal motion. Activation of the Power Removal box does not alleviate he officer in command of the responsibility of requesting and confirming the removal of power via the Department Radio with the Borough Communication Office. Handie-Talkie Relay Truck Chauffer – Bottom of the subway entrance stairs, If token clerk booth is within 50 yards of the stairs contact train dispatcher though the clerk. OV FF – The foot of the staris leading to the platform if it is within 50 yards of the chauffer. Roof FF – Approx 50 yards from the stairs on the platform for relay. Officer – Approx 100 yards from roof FF on platform. Truck Officer – to the fire location, gets the token booth telephone number. If another phone in the fire area will call the LCC and the LCC will relay to the Chief Officer. Additional HT equipped members every 100 yards. Colored Light Globes Green Post light – stairway open 24 hours a day, token booth clerk on duty or a high entry turnstile access with a 1620 key. RED Post light – token booth may NOT be on duty or stairway may be closed. Construction Blue Light – should have a telephone, Fire extinguisher and power removal box. Power Removal Box – If used, contact the Desk supervisor via the telephone and let him know that the FD is on seen. If no immediate call power will be restored. If there is no answer or phone is OOS station a man at the power removal box to continue to shut off the power. After 3 times someone should come to investigate. Cut Outs – Areas of refuge for a person to stand while a train passes by, Members are required to do the low profile maneuver for their masks. No Clearance signs – marked with diagonal red and white stripes on the wall. Subway Emergency Exits – A prism shaped sign or a cluster of 5 white lights identifies Emergency Exits. These exits will lead up to the street. Emergency Evacuation Device Located – at ground and grade stations at the first blue light located south of the southbound platform. At elevated stations – it is located in the area of the full time token booth, keys are in token 7ft long with steps on the front and a flat backside, is yellow. When positioned against the side or end doors the EED will reach the roadbed at approx. 70 degrees. Nolan ATS Inspected periodically based on the company commanders. Each cart is marked with the unit designation to ensure proper identification. Weight – 48lbs, 2 handles and 2 bases. Any Engine company may be called to transport a rail cart from the quarters where it is stored to the scene of an incident. One wheel is provided with a wheel lock – a red square is painted on the surface of the rail cart to denote the location of the wheel lock. Connector plate- used to connect multiple rail cars. Deployment – when the IC wants it and upon transmission of signal 7-5 (All Hands) “Doubtful” or greater alarm. Stretches and stokes basket should extend over the front and rear of the car. Multiversal Nozzle Range of elevation is – 15 degrees below the horizontal or 90 degrees above the horizontal. Safety stop is at 35 degrees – do not use unless mounted or tied down with ropes. Horizontal Friction Lock – holds the multiversal in place permits 180 degree travel horizontally. Safety Chain to Fire Do no operate at more than 800 Gpm, use the below chart. Stacked Tips – 1 ¼” – 100 psi 1/ ½” – 70 psi 2” – 50 psi Siamese – two 3” clapper swivels to supply the multiversal. 15ft of hose from the Siamese should be kept straight and parallel to each other. After each use the spikes hall be inspected, if they exceed 1/16 they will need to be sharpened or replaced. If unable to secure in the portable ground base the unit shall be placed out of service. The Max pressure to which any part should be subjected is 200psi. Vacant Building Definition – a structure that is completely unoccupied and all efforts to maintain the building in a livable condition have been abandoned by the owner. A vacant does not mean no live hazard – it could have trespassers, derelicts, children, workmen etc. Indication of tenants – lights, curtain, shades, plants, window gates, electric extension wires from utility pole, holes, forced entry. IC may implement an interior attack if, • Current structural stability of the building • Any known life hazard • Size and location of the fire • Verification of safe access to fire area. Members must adjust to a “no rush” approach. HUD Windows – are sealed up windows with boards of wood bracing them from inside and large lag screws though the boards. Vacant Marking – 18” x 18” SQUARE Box lines 2” wide with Reflective Lime Yellow Paint. Typically on the Front entrance – can also be fire escapes, roof, bulkhead if deemed advantageous. RO – indicates Roof Open Chain Saws 1. Except for pier fire operations, the chain saw is not to be used for the ventilation or overhauling of structural fires. 2. While operating the chain saw, the operator and control person shall wear the following NFPA compliant and FDNY approved protective equipment: Long sleeve work duty shirt or bunker coat, helmet, eye protection, ear protection, saw protected gloves, bunker boots, and saw protected chaps. 3. Keep body to the left of the chain. Never straddle the saw or lean across chain 4. Properly position yourself for cutting. Hold saw near log and throttle up to full speed just before allowing chain to touch wood. 5. Pull-in: 1. Pull-in occurs when the chain on the bottom of the bar is suddenly stopped. The chain on the bottom of the bar stops when it is pinched, caught or encounters a foreign object in the wood. The reaction of the chain pulls the saw forward and may cause the operator to lose control. 2. Pull-in frequently occurs when the bumper spike of the saw is not held securely against the tree or limb and when the chain is not rotating at full speed before it contacts the wood. Warning: Use extreme caution when cutting small size brush and saplings which may easily catch the chain and pull you off balance. 3. To avoid pull-in: 1. Always start a cut with the chain rotating at full speed and the bumper spike in contact with the wood. 2. Pull-in may also be prevented by using wedges to open the kerf. 6. Saw is to be operated only by members trained in its proper use. 7. 6.2 Saw shall not be operated from a ladder. 8. 6.3 While operating the chain saw, the operator and control person shall wear the following NFPA compliant and FDNY approved protective equipment: Long sleeve work duty shirt or bunker coat, helmet, eye protection, ear protection, saw protected gloves, bunker boots, and saw protected chaps. 1. 7.3.1 Chaps must be worn over either long pants or bunker pants. Chaps shall not be worn over shorts. 2. 7.3.2 Bunker coat and/or long sleeve shirt shall be worn to protect against flying debris, insect bites, poison ivy, etc. Warning: Bunker coat, bunker pants, and firefighting gloves are NOT saw protected and will NOT prevent the chain saw blade from inflicting severe injury. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. The kickback potential is very real. Members are not to tamper with or remove manufacturer safety devices. Saw is not to be used in situations where the vision of the operator is limited. Never attempt cutting a tree which is in contact with live electrical wires. TREES DO CONDUCT ELECTRICITY. Always hold running saw with both hands. Never overreach or operate saw above your shoulders. Use a sharp chain. Rotate saw operators, never permit a fatigued member to operate the saw. When transporting, refueling or performing maintenance, the saw must be in the "OFF" position. Keep chain of saw away from all parts of body while motor is running. Avoid fuel or skin contact with the hot muffler. Never cut while wearing loose clothing such as torn or hanging bunker coat stripes. 19. 20. 21. Use saw protected gloves when operating saw and handling chain. Operate only in well-ventilated areas. Always hold saw with two hands properly positioned when engine is running. Portable Power Saws High speed, two cycle engine Special suction wick; allow saw to operate regardless of position, such as upside down, sideways, etc. Three different types of blades: Gasoline/oil mixture: 4.8 fluid ounces of oil to one gallon of gasoline 20 to 30 minutes operating time CARBIDE TIP: Will cut through gravel & tar covered roofs, wood flooring, light sheet metal and similar material (pictured above). Not to be used on metal security doors, auto bodies, metal window bars & case hardened locks, etc. Dislodged carbide tips can become airborne & cause injuries Blades are placed out of service when eight (8) or more tips are missing, broken, or worn down to the circumference of the blade. ALUMINUM OXIDE (Abrasive Disc): Will cut various types of steel, including auto bodies, metal security doors, metal window bars, etc. SILCON CARBIDE (Abrasive Disc): Will cut through concrete & other masonry materials Painted yellow, on both sides, to differentiate from the aluminum oxide blade Abrasive disc blades are placed out of service whenever they are cracked or badly nicked, center of hole wears out of round, or blade is worn down to 8 inches or less.