G-22 FDNY Test Study Guide. Updated & Verified 55 Questions with Correct Answers. Graded A, Exams of Safety and Fire Engineering

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G-22 FDNY Test Study Guide. Updated &

Verified 55 Questions with Correct Answers.

Graded A

Amounts of LPG & CNG where permit is required - ANS16.4 oz and 8.7 SCF Combustible materials must be how far away from LPG? - ANSAt least 10 feet Container must not be stored on roofs of buildings - ANS Containers should be kept away from - ANSSources of ignition Extreme temps Corrosives Falling objects Public tampering Places where it may fall Control Valve - ANSOn top of each container. Controls the discharge of the contents of the container. Must be opened by hand

Each construction site should be equipped with - ANSAt least one 40 because rated, wheeled fire extinguisher. Must be kept outside storage facility or placed somewhere else accessible no further than 30 feet Excess flow check valve - ANSWill shut off gas supply if control valve is shut off too quickly Cannot be used for forklift and returned to supplier if not installed by manufacturer Activates if container falls and regulator is damaged FDNY transportation permit is required when? - ANSWhen quantities are ovee 400 SCF (47 lbs) fire extinguishers are required to be inspected - ANSMonthly Flexible nonmetallic hoses - ANSMay be used on construction sites/emergency indoor repairs/manhole operations Heaters used for curing and drying must be at least how many feet away from LPG container? - ANS6 feet Hoses - ANSShould be as short as possible Cannot exceed 30 feet When used inside the hose cannot pass through any partitions/floors/walls/ceilings

How is CNG made? - ANSBy compressing natural gas mostly composed of methane How must a flame be approached? - ANSFrom an upwind direction How must containers over 20 lbs be moved to dif floor? - ANSOnly by occupied elevator How must control valve be opened? - ANSBy hand and turning 2 full revolutions counter clockwise How must fire extinguishers be installed? - ANSSo that the top is not more than 5 feet above the floor and the clearance between the bottom and the floor is not less than 4 inches If containers need to be moved between floors - ANSUse an elevator if possible Indoor storage room rules - ANSFire extinguisher (10 b:c) fixed to the outside of the room and another no more than 30 feet from the entrance There may be more than one location of 3,500 SCF in a room, provided they don't exceed that and they are more than 50 feet apart or an approved masonry barrier having a minimum fire resistance rating of 2 hours Length of hose cannot exceed - ANS30 feet outdoors 6 feet indoors

LPG cannot be used - ANSUnderground or any below grade locations LPG containers are allowedd to charge to a max of how many pounds? - ANS pounds LPG is naturally - ANSColorless and Odorless LPG is usually stored as what and why? - ANSA liquid. Because when the liquid turns to a gas it expands to 269 times its original volume MAX CAPACITY ON TRUCK - ANSLPG 40 LBS CNG 340 SCF Methane gas a LEL and UEL of? - ANS5% and 15% Natural gas is heavier or lighter than ajr? - ANSLighter No smoking signs must be - ANSAt least 10 inches by 14 inches in size and letters must be 2 inches high non-metallic hose must be DOT approved designed for - ANSWorking pressure of not less than 250 psi outdoors or 350 psi indoors Outdoor storage of LPG is limited to - ANS400 lbs

Portable LPG AND CNG containers with a capacity greater than 16.4 oz 8.7 SCF CANNOT be stored where? - ANSIndoors Rubber Slip Connections - ANSProhibited in LPG containers Storage enclosures must be - ANSProtective of temperatures/tipping/physical damage/tampering Metal open fence enclosure at least 6 feet in height Locked gate opening outward The use of nonmetallic pipe tubing or hose for permanently interconnecting containers is prohibited - ANS Universal Type container may be used - ANSEither upright or horizontal What does a bubble mean at a connection? - ANSThere may be a problem with the connection What does ice build up indicate? - ANSGas is leaving the container in a liquid state What does the expansion rate of LPG cause? - ANSTo be a much greater fire hazard than a vapor leak What is the max capacity of a CNG container? - ANS381 SCF

What is the max travel distance to a fire extinguisher from the work location? - ANS30 feet What is the maximum indoor storage LPG capacity - ANS200 pounds, unless the storage location is not accessible to the public, then it can go up to 300 pounds What must be used to shield containers that are exposed to hot air blown by a heating appliance? - ANSA protective partition What odor allows you to detect an LPG leak? - ANSRotten eggs What should you do if there is ice build up on appliance or connectors? - ANSShut off main control valve, take it out of service and return it to the supplier immediately w What should you do if theres ice build up on container itself or control valve? - ANSDial 911 What should you do if you cannot shut off gas supply? - ANSLet fire burn itself out and call 911 What should you never use to check leaks? - ANSA flame What temperature can cause pressure inside a container to increase to an unsafe level? - ANS125°F

When are universal containers used - ANSWhen its difficult to maintain an upright position on a standard container When can containers be transported in vehicles? - ANSWhen they are approved vehicles When the quantity of gas is less than 400 SCF When is a storage permit required? - ANSOver 400 SCF When is the use of LPG in liquid form not prohibited? - ANSHot air balloon operations When should LPG containers be provided with transportation plugs - ANSWhen they have a capacity over 20 pounds When should you adjust the discharge rate on the regulator? - ANSNEVER, it is factory set. Which liquids are considered LPG - ANSPropane (most common) Propylene Butane (most common) Butylene