G-60, G60, F-60 FIRE GUARD, F-60 Study Material Latest 2022/2023, Exams of Social Security Law

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G-60, G60, F-60 FIRE GUARD, F-60 Study Material Latest 2022/2023 G-60 - answers Use of oxygen and flammable gasses, or LPG or CNG for any hot work COF exception - answers Torch operations for jewelry FDNY permit - answers Storing using or handling oxygen and flammable gas in excess of 400scf (LPG, CNG or scetylene) oxidizing gass in excess of 504scf Portable LPG must not be stored when the capacity of the container is greater than? - answers 16.4 oz Portable CNG containers must not be stored then the capacity is greater than? - answers 8.7 SCF Single standard portable LPG containers must not exceed? - answers 100LBs in weight Single CNG containers must not exceed? - answers 381 SCF LPG 400 SCF is approximately - answers 47 lbs Types of FDNY permits - answers Site specific permits City wide permits Transportation permits Site specific permit can be? - answers Can be permenant or temperary Permanent permits are valid for how long? - answers 12 months only. Permits and renewals require inspection and will expire adter twelve months. Temporary permits may be valid from? - answers One day to 12 months depending on the construction or operations needed. City wise permit duration? - answers 30 days At least one portable fire extinguisher with a - answers Minimum 2- A:20-B:C rating shall be accessible within 30ft from hot work Fire watch Exception roofing operating fire extinguisher - answers 3-A 40-B:C Fire watch for torch operations conducted at following locations by a F- 60 fire guard: - answers Construction sites Buildings and structures Rooftops Fire watch must continue for - answers 30 minutes after the conclusing of the work. Time and record keeping requirements CNG or LPG torch operations inspections - answers First shall be conducted 30minute after completion Second inspection 1 hour after completion The inspection report must be available - answers 48 hours after work is complete for fire department representative to look over. Oxygen cylinder is made of - answers Steel and contains 100% oxygen Oxy propane degrees - answers 1,500 degrees Acetylene degrees - answers 3000 degrees Oxy-acetylene degrees - answers 6000 degrees Brazing and soldering temperatures - answers Typically 840 degrees Oxy-fuel torch Oxygen storage pressures up to - answers 2200 PSI (pounds per square inch) Oxy-fuel torch Dangerous fuel gas pressures - answers Above 15 psi especially for acetylene Gas torches also have applications and additions like - answers For burning weeds Melting ice Applying tar/asphalt Backfire - answers Flame on torch goes out unexpectedly A loud snap or pop may occur when the flame goes out. Flashback - answers Cutting or welding flame burns inside the torch or the hoses. It is usually accompanied by a whistling or hissing noise. Frayed clothing - answers Susceptible to ignition and burning, should not be worn. Compression gas container Dangerous temperatures - answers High temperatures 125 degrees Regulator - answers Most important part of compressed gas systems. Acetylene is used because - answers compared to the other fuel gases it creates the greatest amount of heat when burned (i.e. 3,000 degrees Fahrenheit higher than an air-propane torch) Both gas containers have control valves on the ___ of the container. - answers top The valves control the - answers discharge of gas from the containers Gas containers also have a - answers protective cap or protective collar. when the cylinders are not in use - answers The caps should be screwed on over the valve The oxygen is stored at pressures up to - answers 2200 psi The fuel gas is stored at higher pressures to keep - answers sufficient amount of fuel available for torch operations it is dangerous to use the fuel gas at pressures above __ psi, especially for _________ - answers 15, acetylene. The regulator makes sure that - answers fuel is discharged from the gas container at a safe pressure range The two gases, _______ and the ________, are mixed inside the torch - answers oxygen, fuel gases Adjusting the valves controls: - answers the shape and intensity of the flame. Welding involves - answers joining two or more pieces of metal together to form a single piece. cutting processes involve - answers separating or severing a piece of metal through intense heat generated to melt the metal Both welding and cutting processes often include - answers oxygen and fuel gas Oxy-acetylene generates the ______ temperature which can reach up to _________ ºF. - answers highest, 6,000 THE COF HOLDER MUST KEEP THE COF ___________ OR READILY AVAILABLE FOR INSPECTION - answers UPON HIS OR HER PERSON PORTABLE LPG CONTAINERS THAT ARE MORE THAN ________ MUST NOT BE STORED, HANDLED, OR USED INDOORS. - answers 16.4 OZ PERMITS SHALL BE READILY AVAILABLE ON THE _________ FOR INSPECTION BY FIRE DEPARTMENT REPRESENTATIVES. - answers PREMISES HOT WORK PERMITS SHALL BE AVAILABLE FOR INSPECTION BY ANY REPRESENTATIVE FOR __________ AFTER THE WORK IS COMPLETE. - answers 48 HOURS FOR _____________, THE OWNER OF THE HOT WORK OPERATION AREAS MUST BE NOTIFIED IN WRITING BY THE CITYWIDE PERMIT HOLDER AT LEAST 48 HOURS BEFORE HOT WORK IS TO BE STARTED. - answers CITYWIDE HOT WORK OPERATIONS PRE-HOT WORK CHECKS MUST BE CONDUCTED BEFORE HOT WORK IS AUTHORIZED AND AT LEAST ___________. - answers ONCE PER DAY FIRE WATCH WILL BE PROVIDED FOR A MINIMUM OF _________ AFTER WORK IS COMPLETE. - answers 30 MINUTES HOT WORK AREAS MUST BE KEPT ___________ FEET AWAY FROM ANY COMBUSTIBLE MATERIAL. - answers 35 CLASS B EXTINGUISHERS ARE FOR EXTINGUISHING ___________. - answers FLAMMABLE OR COMBUSTIBLE LIQUIDS CLASS C EXTINGUISHERS ARE FOR EXTINGUISHING _____________. - answers ELECTRICAL EQUIPMENT CLASS D EXTINGUISHERS ARE FOR EXTINGUISHING ____________. - answers IGNITABLE METALS FIRE EXTINGUISHERS ARE REQUIRED TO INSPECTED __________. - answers MONTHLY FIRE EXTINGUISHERS MUST BE MAINTAINED BY A FDNY APPROVED COMPANY AT LEAST ___________. - answers ONCE PER YEAR Certificate of Fitness: fire watch for torch operations conducted at the following three locations shall be conducted by at least one F-60 fire guard - answers 1- construction sites 2-in any building or structure, when the torch operation is conducted by a person holding a citywide permit for torch operations 3-on any rooftop, or in connection with any torch-applied roofing system operation Certificate of fitness holder must... - answers Keep the certificate of fitness upon his or her person, or otherwise readily available for inspection by any representative of the department, at all times while conducting or supervising the material, operation or facility for which the certificate is required The F-60 Certificate of Fitness holder is required to comply with the following FDNY cod and rules section: - answers -Welding and other hot work -Fire prevention during welding, cutting and other hot work -liquefied petroleum gases -compressed natural gasses FDNY permits 3 of the following - answers 1- storing, using or handling oxygen and a flammable gas, or 2- storing, using or handling any flammable gas in excess of 400 SCF or 3- storing, using or handling any oxidizing gas (ex. oxygen) in excess of 504 SCF LPG - 400 SCF is how many pounds? - answers 47 lbs. List of the number of LPG containers for storage, use, handling or transportation, requiring a permit - answers 14.1 oz= 54 16.4 oz = 46 20 lbs = 3 33.5 lbs = 2 40 lbs = 2 100 lbs = 1 LPG - answers portable LPG containers that are more than 16.4 oz and CNG containers with a capacity greater than 8.7 SCF must NOT stored, handled, or used indoors/roof in the following occupancies.... -residential areas -factory and industrial occupancies -educational occupancies -institutional occupancies except as the commissioner may authorize by rule Use of LPG/Propane on an occupied roof requires... - answers An affidavit from a licensed professional (Architect or Engineer) stating the roof is constructed of non-combustible material(s) Any single standard LPG must not exceed... - answers 100 lbs in weight Any single CNG container must not exceed... - answers 381 SCF Fire Guard - answers A person holding a certificate of fitness for such purposes , who is trained in and responsible for maintaining a fire watch and performed fire safety duties as may be prescribed by the commissioner Fire Watch - answers A temporary measure intended to ensure continuous and systematic surveillance of a building or portion thereof by one or more qualified individuals for the purposes of identifying and controlling fire hazards, detecting early signs of fire, raising an alarm of fire and notifying the department. Hot work - answers Cutting, welding, thermit welding, brazing, soldering, grinding, thermal spraying, thawing pipe, cad welding, installation of torch-applied system, or any other similar operation or activity Hot work area - answers The area exposed to sparks, hot slag, radiant heat, or convective heat as a result of hot work Hot work equipment - answers Electric or gas welding or cutting equipment used for hot work Hot Work Program Authorizations - answers Authorization issued by the responsible person under a hot work program allowing welding or other hot work to be performed at the premises NFPA - answers -National Fire Protection Association -world's leading advocate of fire prevention and an authoritative source on public safety -NFPA develops, publishes and disseminates more than 300 consensus codes and standards intended to minimize the possibility and effects of fire and other risks Responsbile person - answers A person trained in the fire safety hazards associated with hot work, and in the necessary and appropriate measures to minimize those hazards, who is designated by the owner of a premise to authorize the performance of hot work at the premises Torch Applied Roof-System - answers Bituminous roofing systems using membranes that are adhered by heating with a torch and melting asphalt back coating instead of mopping hot asphalt for adhesion. Causes of fires... - answers -usually note the flame -usually thousands of sparks and pieces of hot metal that are generated when using the torch -the sparks and pieces of hot metal are all possible sources of ignition -sparks and pieces of hot metal are the source of ignition in about 60% of all fires in the industrial occupancies Hot work operation with citywide permit - answers -the owner of the premises of the hot work operation areas must be notified in writing by the citywide permit holder at least 48 hours before the hot work is to be started All hot work operations - answers -owner of the hot work operation areas must designate a responsible person -the responsible person must ensure that the hot work is performed in compliance with the terms and conditions of the permit -the person should inspect the hot work site prior to issuing the hot work authorization to ensure that it is a fire safe area -he/she need to periodically monitor the work as it is performed to ensure no fire safety hazards -hot work operations must be conducted under the gerbil supervision of the responsible person Before hot work is authorized and at least once per day while authorization is in effect.... - answers the hot work area shall be inspected by the responsible person to ensure that it is a fire safe area Pre-hot work check - answers -must be conducted by responsible person before hot work authorization and at least once per day -check reports must be kept at worksite during work, made available by FDNY rep -must be maintained on premises for a minimum of 48 hours after work is complete -hot work areas shall be regularly cleaned and combustible waste removed and disposed lawfully -combustible materials should be moved to safe location -if relocation impractical, then combustibles, openings or cracks in walls, floors, ducts or shafts with 35 feet of hot work area must be tightly covered to prevent the passage of sparks to adjacent combustible areas, or shielded by metal or fire-retardant guards, or provided with curtains to prevent passage of sparks or slag -may also be wetted down as an added precaution -ducts and conveyor systems that are capable of carry sparks to distant combustibles must be shielded, or shut down, or both -if hot work is done near walls, partitions, ceilings, or roofs, ignition of combustibles on the other side must be prevented Prohibited welding or cutting when... - answers -supported by or resting on any compressed gas containers -hot work shall not be performed on a container or equip that contains or has contained a flammable solid, flammable liquid or flammable gas until the container or equipment has been cleaned or purged Separating hot work areas from other areas... - answers -partitions segregating hot work ares from other areas of the building shall be noncombustible construction -in fixed hot work areas.. the partitions shall be securely connected to the floor such that no gap exists between the floor and the partition -partitions shall prevent the passage of sparks, slag, and heat from the hot work Fire Watch Requirements - answers -must be maintained during any hot work operation -fire watch shall observe the entire hot work area -hot work conducted in areas with vertical or horizontal fire exposures that are not observable by a single individual shall have additional personnel assigned to ensure that exposed areas are monitored Persons conducting fire watch... - answers -shall keep constant watch for fires with respect to the ares being monitored in connection with hot work operations -persons conducting fire watch shall not have other duties Fire Guard vs Fire Watch - answers -important to understand the code required distinction between fire watch and a fire guard -not all individuals responsible to maintain a fire watch must possess an f-60 certificate of fitness Fire guard for construction sites and torch applied roofing systems - answers -it shall be unlawful to install any roofing material using a torch on a roof of combustible construction, or otherwise engage in roofing operations on roofs of combustible construction using hot work equipment A Torch-applied roof system - answers Bituminous roofing systems using membranes that are adhered by heating with a torch and melting asphalt back coating instead of mopping hot asphalt for adhesion At a construction site and torch-applied roofing system operation... - answers every torch operator must also have a person performing fire watch by a F-60 fire guard -EXCEPTION... the single fire guard may be designated to conduct a fire watch for more than one torch operation on the same floor or level if each torch operation is not more than 50 feet from the fire guard, as measured by the actual path of travel, and the field of view of such fire guard encompasses all of the horizontal fire exposures of such torch operations Fire watch on floors below... - answers additional F-60 fire guard is required to perform fire watch on floor below if the torch operation is being conducted at or near the edge of an unenclosed floor of a building, or near a floor opening, or other location where sparks and slag may travel or more lower floors or levels Exception to fire watch on floors below... - answers -a fire watch is not required on the floors/levels below a torch operation on a construction site when ALL the following conditions are met: 1.the torch operation is not being conducted at or near the edge of an unenclosed floor of a building When notifying 911 of fire or other emergency... - answers -caller must know the nature of the emergency, address, if anyone is in need of medical attention and what their symptoms are -provide entrance information with the most direct access to the emergency area -the phone number you are calling from -nature of the emergency details about the emergency -fire guard should be there to meet emergency responders to provide them with information regarding the nature of the emergency, its location on the construction site and to provide the information that the emergency responders request Fire hoses - answers where hose lines are required, they shall be connected, charged and ready for operation Sprinkler protection - answers sprinkler system protection shall not be shut off or impaired while hot work is performed unless approved by the commissioner. where hot work is performed close to sprinklers, noncombustible barriers or damp cloth guards shall shield the individual sprinkler heads and shall be removed when the work is completed. If the work extends over several days, the shields shall be removed at the end of each work day Fire Detection System - answers -fire alarm systems may need to be taken out of serviiceduring hot work to avoid unwarranted alarms -date, time alarm was taken off line, reason for such action, name and operator number of the person notified at the central station and the date and time the system was restored to service must be entered in the alarm log book in each such circumstance. -fire watch for impairment must be provided when the alarm system is offline A portable fire extinguisher with at least 2-A:20--B:C rating... - answers must be readily accessible within 30 feet of the location where hot work is performed and where the fire guards are positioned -in case of fire, 911 must be called In event of a fire extinguisher has been discharged... - answers a fully charged replace meant is required before work can resume Portable fire extinguishers are important in? - answers -preventing a small fire from growing into a larger one -not intended to fight large or spreading fire The C of F holder should only consider extinguishing a fire when? - answers they are limited in size and spread such that they can be readily extinguished using a portable fire extinguisher P.A.S.S. - answers Pull, Aim, Squeeze, Sweep All fire extinguishers installed so that? - answers the top of the extinguisher is not more than 5 ft above the floor and the clearance between the bottom of the extinguisher and the floor is less than 4in. -in other words, no fire extinguisher is allowed to put on the floor Extinguishing a gas fire caused by a leak... - answers -easiest way to extinguish this fire is to shut off by using the emergency shut off valve until the flame is extinguished Where to point the extinguisher to extinguish a fire... - answers the dry chemical stream must be directed toward the point where the flame begins - DO NOT direct the chemical stream at the center of the flame, this will not extinguish the fire Extinguished piped gas - answers -for piped gas, the gas supply must be shut off first then call 911 -never attempt to extinguish the flame unless the gas supply is shut -when not possible to shut off the gas supply (e.g. the fire is near the control valve or the shut-off valve) and the gas supply is limited (e.g. it is from a cylinder) allow the flame to burn itself out and call 911 -in meantime, prevent fire spreading to the surrounding materials Class A fire - answers -Fires caused by ordinary combustibles such as wood, paper, cloth, and plastic fires 3. ares with readily ignitable materials, such as storage of large quantities of bulk sulfur, baled paper, cotton, lint, dust or loose combustible materials 4. on board marine vessels or watercraft at dock under construction or repair Oxygen containers must be kept away from? - answers grease and oil Oxygen containers, apparatus and fittings shall not be handled with? - answers -greasy or oily hands, gloves, tools or equipment Oxygen/fuel containers must be kept away from? - answers Hot work Torch valve closed and gas supply shut off when? - answers hot work discontinued for 1 hour or more oxygen and fuel gas containers valves shall be accessible to torch operator or fire guard for? - answers -immediate shut off of the gas supply in event of emergency Gas Torches - answers -used for different purposes citywide -a fuel gas is used in the equipment to generate a flame to perform heating, cutting welding and brazing -gas torches utilize two basic types of gas systems: blowtorch (air fuel) and oxy-fuel Blowtorch (air fuel) torch or single tank torch - answers -a propane torch is an example of a blowtorch, commonly used in torch-applied roof system -to provide enough oxygen for the torch to burn the fuel cleanly, the system mixes in air from the surrounding environment prior to ignition and while the torch is running -a container holds the fuel, while a tube carries it up to the nozzle -a valve near the nozzle lets in the air as needed Most common fuel gases used in blowtorches? - answers LPG (butane, propane), natural gas (methane) (either CNG or piped natural gas) Oy-fuel Torch - answers -have two separate containers: a pressurized fuel gas container and a pressurized oxygen container -the oxygen cylinder is made of steel and contains 100% oxygen -a mixture of oxygen and fuel gas is used to generate a flame -the fuel gas is needed because oxygen does not burn by itself -oxygen supports combustion and it maintains and controls the flame -oxygen intensifies the burning of the fuel gas Workers should never use _______ to blow dirt off their clothes - answers oxygen Using _______ with ______ makes the torch flame much hotter than the standard blowtorch - answers pure oxygen; the fuel Some of the fuel gases used in Roxy-fuel torches are - answers - LPG,natural gas, acetylene -Acetylene is used because compared to the other fuel gases it creates the greatest amount of heart when burned Both Oxy-fuel and Air Fuel torch... - answers -both gas containers have control valves on the top of the container -the valves control the discharge of gas from the containers -gas containers also have a protective cap or protective collar -the protective collar is always located on top of the LPG container -the caps should be screwed on over the valve when the cylinders are not in use -these caps.collars prevent the valves from being damaged -the oxygen is stored at pressures up to 2200 psi -it has a safety disk installed in the control valve connection of the oxygen container -this disk will burst if the oxygen pressure in the cylinder becomes too great -this allows the oxygen to escape into the air and events an explosion -the pressure is likely to change if the cylinder becomes hot -if the fuel is piped natural gas, required protective flashback arrestor/checkvalve material must be installed as one of the following three options 1.put the flashback arrestor at the head end of the gas supply 2.place flashback arrestors in each branch of the manifold 3.places flashback arrestors at each torch NFPA 51 offers three options for placing the required protective flashback arrestor/check valve in a manifold pipe system: - answers 1.put the flashback arrestor at the head end of the gas supply 2.place flashback arrestors in each branch of the manifold 3.places flashback arrestors at each torch -additional check valves are required at each torch operation in option 1 and 2 and on the oxygen line in option 3 -shutoff valves are required on both natural gas and oxygen lines at each torch location Turn on an Oxy-Fuel Torch - answers -open the gas container valve slowly and allow pressure to stabilize -an acetylene valve must not be opened more than approximately 1 1/2 turns and preferable no more than 3/4 turns, unless otherwise specified by the manufacturer -the acetylene pressure must never be above 15 psi -if more acetylene is needed to supply, the larger torch hose should be used -torch should be ignited by friction devices or other approved methods -should not use matches or other hot works -once the flame is lit, open the fuel valve more and open the oxygen rich valve until the desired flame composition is achieved Turn off an Oxy-fuel torch - answers -if the torch operation is to be discontinued for a period of 1 hour or more, the torch valve must be closed and the gas supply to the torch also must be completely shut - turn off the gas torch gas valves. Some manufacturers suggest turning off the oxygen side first to prevent soot from building up inside the torch tip. But some may suggest first turn off the fuel gas torch valve. Then turn off the oxygen. It is always best to follow the instructions for the torch you are using -close both the oxygen and fuel container valves completely -open the torch valves, one at a time, to bleed hoses. The pressure shown on both pressure gauges should drop to zero. Close the torch valves. Turn both regulator pressure screws counter-clockwise until they are loose -disconnect the regulators from the gas containers or disconnect the hoses from the regulators Avoid oil or grease - answers -containers, valve, regulators, hose and other apparatus and fittings for oxygen must kept free of oil or grease -oxygen containers, regulators must not be handled with oily hands, oily gloves, or greasy tools or equipment -the oil and grease are more likely to ignite in the presence of oxygen -oxygen intensifies the burning of other materials -mixture of pressurized oxygen and oil or grease may cause an explosion NEVER mix gases inside a container - answers -never attempt to mix oxygen and fuel inside a container -never attempt to transfer oxygen or acetylene from one gas container to another Backfire (common problems occur with torch operations) - answers - this occurs when the flame on the torch goes out unexpectedly. -loud snap or pop may occur when the flame goes out -sometimes the flame will quickly relight -this happens when the working surface area is hot enough to reignite the flame Causes of backfire - answers -touching the nozzle tip against the working surface -overheating the nozzle tip -the oxygen and/or the fuel gas is set at the wrong pressure -the cutting or welding tip is loose or dirty -dirt on the work surface -kinks or blockages in the hoses -the nozzle tip is damaged and not seated properly in the torch head Label all compressed gas containers clearly - answers -the contents of any compressed gas container must be clearly identified -gas identification should be stenciled or stamped on the container or a label, and is typically applied near the neck of the container -do not rely solely on the color of the container to identify the contents -do not use any container that is unmarked or has conflicting markings or labels Is the storing handling, or use of LPG in any equipment used or previously used for natural gas is prohibited in New York City, except as may be authorized by the commissioner on an emergency basis? - answers Yes Is the storing, handling, and use of CNG in any equipment or previously used for LPG is also prohibited in NYC, except as may be authorized by the commissioner on an emergency basis? - answers Yes Do not refill container - answers -gas containers must be replaced when they are empty -illegal to refill gas containers in NYC -empty containers must be handled in the same manner as full ones -should be marked empty, the container valve or regulator tap must be closed and stored separately from full containers -all empty containers must be promptly removed by vendors -damaged or otherwise usable LPG/CNG containers must be promptly removed from the premises and lawfully disposed of Upright position - answers -All LPG/CNG containers must be secured must be secured in an upright position and must not be stacked or stored on shelves -gas containers should be maintained in an upright position when being used -gas containers used for on-site jobs are usually secured on a handtruck permits the gas containers to be moves safely - all gas containers must be secured from tipping over, and should be stored in an upright position, and be equipped with a pressure regulator designed for the specific gas and marked for its maximum container pressure -you can appropriate material such as chain, plastic coated wire cable, commercial traps, etc. to secure gas containers Well-ventilated areas - answers -indoor compressed gas storage and compressed gas use areas must be located in a well-ventilation areas. -LPG/CNG containers shall be used in a cellar, basement, pit or other area below grade -LPG containers shall not be used in an above-grade under floor space or basement unless such location is provided with an approved means of ventilation EXCEPTION: Portable LPG containers are allowed to be used to supply approved self-contained torch assemblies. Such containers shall not exceed 16.4ounces of LPG Always replace the protective cap - answers -most gas containers have a protection cap -LPG containers have a collar -these devices protect the container control valve from physical damage -the protective cap is shaped like an inverted cup -screwed on top of the gas container - it must be in place when the gas container is not in use -protective collar is welded onto the top of the container -the collar extends above the height of the containers control valve Away from temperature and physical damage - answers -all gas containers and the related equipment must be protected from extreme temperature and physical damage -high temperature can cause the pressure inside the container to increase to a dangerous level (125 degrees F) Regular Inspection - answers -the C of F holder must regularly inspect the compressed gas containers, connections, and appliances for leaks -the damaged containers must be removed from services, repaired and tested by an unauthorized person -regulator connections to gas containers valves must be completely free of dirt, dust, oil, and grease. -the regulator controls the discharge rate of gas from the container Hose, Piping, and Tubing - answers -the regulator is also connected to a hose that supplies the gas to the appliance -this hoe must be securely connected to the appliance -a rubber slip connection is prohibited -only DOT approved hoses designed for a working pressure of 350 psi. are allowed -nonmetallic pipe, tubing and components for any installation, appliance or equipment using LPG or CNG is prohibited -however, nonmetallic hose may be allowed at construction sites -hoses must be as short as practical protecting from mechanical injury, but they must not be too close to an open flame -hoses must be protected from physical damage and no hose is allowed to exceed 30 feet -when the gas containers are used inside buildings, the hose must not pass through any partitions, walls, ceilings, or floors -pipping in systems must be run as directly as is practical from one point to another, with as few fittings as practical. -the use of nonmetallic pipe tubing, or hose for premaritally interconnecting gas containers is prohibited -all pipping and tubing must be protected against damage by vehicles and by corrosion and by corrosion causing substance Containers connected for use - answers -single container of oxygen and a single container of flammable gas may be installed on a cart provided that the containers are connected to regulators, equipped with apparatus designed for cutting, welding, or other hot work operation the following requirements 1. carts shall be designed and used in accordance with fire code 2. container valves shall have a fixed hand wheel, or other approved means by which the flow of gas may be immediately shut down during the hot work operations 3. container valves shall be closed at the end of each workday and whenever work is discontinued or the cart moved 4. container valve outlet connections shall conform to the requirements of CGA V-1 5. oxygen and fuel gas containers on the carts shall be located at a distance from the hot work area sufficient to protect such containers from heat, sparks, slag, or misdirection of the torch flame, or fire- resisitance shields shall be provided 6. a separation distance of 20 feet shall be maintained between such carts Movement of Compressed Gas Containers - answers -a compressed gas container must not be rolled on its side or its rim -must be moved using approved lifting equip -where removable caps are provided for valve protection, such caps should be kept on containers at all times except when containers are in use -do not lift containers by the cap -valves of compressed gas containers must not be used for lifting What method of moving containers is acceptable? - answers - containers shall be moved using an approved method -compressed gas containers should be moved in an upright position, and must be moved using an approved method -avoid dragging or sliding containers -never drop container nor permit them to strike against each other -safer to move containers even short distances using suitable truck Should carts and trucks used to move materials obstruct or be left unattended in any corridor, exit enclosure, or other means of egress? - answers No, they need to stay clear Should compressed gas containers be placed placed on carts and trucks individually and restrained? - answers Yes, they should be individually restrained What happens if compressed gas containers need to be transported to different floors? - answers -if possible, use an elevator -ledges, unprotected platforms, and elevators or other areas where the container could drop a distance exceeding one-half the height of the container Storing Containers - answers -a permit is required for any storage area storing (1) any flammable gas in excess of 400 SCF; or (2) any oxygen excess of 504 SCF -the storage of compressed gases in quantities requiring a permit shall be under the general supervision of a proper certificate of fitness holder Handling and Use of Acetylene Gas - answers -acetylene gas is a colorless, extremely flammable gas with a garlic-like odor -it is stored as a liquid in containers under pressure -copper tubing should never be used to splice the acetylene hose -the copper tube will react chemically with the acetylene -the reaction may cause an explosion if the tube is subjected to physical blow -use of acetylene generates is prohibited in any hot work operations Acetylene should never be set above ? - answers 15 psi as the acetylene will decompose explosively Handling and Use of LPG (Liquid petroleum gas) - answers -used as fuel source -includes propane, propylene, butylene -the most commonly used LPG is butane and propane Description of Liquid Petroleum Gas - answers -LPG is naturally colorless and odorless -LPG is heavier than air -the expansion rate causes liquid LPG to be a much greater fire hazard than a vapor leak -a liquid LPG leak can cause an explosion even in an outdoor location -Standard portable LPG containers are allowed to charge to a maximum of 100 pounds in weight -when portable containers are moved they must be secured to a specially designed hand truck -LPG containers and the related equipment must be protected from damage Safe handling and use of LPG - answers -LPG is highly explosive when it accumulates in one area -as a precaution LPG must only be used in well-ventilated areas -the LPG container must not be placed or used underground or in a below grade location A sign explaining safe handling procedures for LPG should be posted near all LPG appliances. This sign should indicate the following: - answers -how to connect all regulators, manifolds, and hoses to containers and appliances -how to detect LPG leaks safely -how to start up and shut down the appliance and related equipment -the names, address, and telephone number of a local supplier -emergency number; 911 Handling and use of compressed natural gas (CNG) - answers -any single CNG container must not exceed 381 SCF Checking for leaks - answers -Any defective components that are discovered that are discovered must be marked and be replaced before the equipment may be used again -C of F holder must not attempt to do any repairs, but only take the equipment out of service - most leaks occur at the top of the gas container in areas such as the valve threads, pressure safely device, valve stem and valve outlet How leaks should be checked and with what? - answers -these areas must be checked using soap and water solution -NEVER CHECK FOR LEAKS WITH A MATCH -first make sure all connections are tight -then open the container valve