NASCLA ACCREDITED EXAM 2023 -2024 ACTUAL EXAM 250 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) | AGRADE Where should quantities of flammable liquid in excess of 25 gallons be stored in that is acceptable or approved? - ....ANSWER.... Acceptable wooden storage and Approved metal storage cabinets. Cabinets shall be labeled in conspicuous lettering "Flammable -
Keep Away from Open Flames" LP-Gas storage outside of buildings for containers waiting use shall be located from the nearest building or group of buildings in accordance to? - ....ANSWER.... 1. 500 lbs or less - 0ft 2. *** 501 to 6,000 lbs - 10ft 3. 6,001 to 10,000 lbs - 20ft 4. Over 10,000 lbs - 25ft Clearance and mounting of temporary heating devices are? - ....ANSWER....1. Room heater, circulating type - 12" sides, 12" rear, 18" chimney connector 2. ***Room heater, radia nt type - 36" sides, 36" rear, 18" chimney connector How far shall heaters used in the vicinity of the combustible tarpaulins, canvas, or similar coverings be located from the coverings? - ....ANSWER.... 10 feet from coverings Material stored inside build ings under construction shall not be placed with what distances? - ....ANSWER.... 6 feet of any hoistway or inside floor openings, ***not within 10 feet of exterior wall which does not extend above the top of the material stored Bagged materials shall be s tacked by stepping back the layers and cross -keying the bags at least by how many bags high? - ....ANSWER.... 10 bags high Brick stacks shall not be more than? - ....ANSWER.... 7 feet in height When a loose brick stack reaches a height of 4 feet, it shall be tapered back by how many inches? - ....ANSWER.... 2 inches in every foot of height above the 4 -foot level When masonry blocks are stacked higher than 6 feet, the stack shall be tapered back how far? - ....ANSWER.... Back one -half block per Tier above the 6 -foot level Used lumber shall have what withdrawn before stacking? - ....ANSWER.... Nails How shall lumber be stacked? - ....ANSWER.... On level and solid supported sills, and stable and self supporting Lumber piles shall not Exceed? - ....ANSWER.... 20 feet in height provided that lumber to be handled manually shall not be stacked more than 16 feet high Wire rope shall not be used if? - ....ANSWER.... In any length of eight diameters, the total number of visible broken wires exceeds 10 percent of the total number of wires, or if rope shows other signs of excessive wear, corrosion, or defect Waste materials - when materials are dropped more than 20 feet to any point lying outside the exterior w alls of the building what is needed? - ....ANSWER.... An enclosed chute of wood, or equivalent material, shall be used. Enclosed chute is a slide, closed in on all sides, through which material is moved from a high place to a lower one All other hand -held powered tools such as circular saws, chain saws, and percussion tools without positive accessory holding means, shall be equipped with what? - ....ANSWER.... A constant pressure switch that will shut off the power when the pressure is released Compressed a ir shall not be used for cleaning purposes except when? - ....ANSWER.... Where reduced to less than 30 p.s.i and then only with effective chip guarding and personal protective equipment which meets the requirements. The 30 psi requirement does not apply for concrete form, mill scale and similar cleaning purposes Who shall be allowed to operated a powder -actuated tool? - ....ANSWER.... Only employees who have been trained in the operation of the particular tool in used All employees using abrasive wheels sha ll be protected by? - ....ANSWER.... Eye protection equipment Guarding, all portable, power -driven circular saws shall be equipped with what? - ....ANSWER.... Guards above and below the base plate or shoe. The upper guard shall cover the saw to the depth of the teeth, except for the minimum arc required to permit the base to be tilted for bevel cuts. The lower guard shall cover the saw to the depth of the teeth, except for the minimum arc required to allow proper retraction and contract with the work. When t he tool is withdrawn from the work, the lower guard shall automatically and instantly return to the covering position. Valve protection caps shall not be used for lifting cylinders from one vertical position to another. - ....ANSWER.... Bars shall not be u sed under valves or valve protection caps to pry cylinders loose when frozen. Warm, not boiling, water shall be used to thaw cylinder loose How should compressed air be secured? - ....ANSWER.... In an upright position at all times except, if necessary, for short periods of time while cylinders are actually being hoisted or carried What distance shall Oxygen cylinders in storage be separated from fuel -gas cylinders or combustible materials (especially oil or grease)? - ....ANSWER.... A minimum distance of 20 ft (6.1m) or by non -combustible barrier at least 5 ft (1.5m) high having fire -resistance rating of a least one -half hour. Inside of buildings, how shall Gas cylinders be stored? - ....ANSWER....In a well protected, well -ventilated, dry location, at least 2 ft (6.1m) from highly combustible materials such as oil or excelsior. Cylinders should be stored in definitely assigned places away from elevators, stairs, or gangways. Assigned storage places shall be located where cylinders will not be knocked over or damaged by passing or falling objects, or subject to tampering by unauthorized persons. Cylinders shall not be kept in unve ntilated enclosures such as lockers and cupboards. How shall a regulator to a cylinder valve be connected? - ....ANSWER....The valve shall be opened slightly and closed immediately. (The action is generally termed "cracking" and is intended to clear the v alve of dust or dirt that might otherwise enter the regulator.) The person cracking the valve shall stand to one side of the outlet, not in front of it. The valve of fuel gas cylinder shall not be cracked where the gas would reach welding work, sparks, fla me, or other possible sources of ignition. All hose in use, carrying acetylene, oxygen, natural or manufactured fuel gas, or any gas or substance which may ignite or enter into combustion, or be in any way harmful to employees shall? - ....ANSWER....Be in spected at the beginning of each working shift. Defective hose shall be removed from service. When the arc welder or cutter has occasion to leave his work or to stop work for any appreciable length of time, or when the arc welding or cutting machine is to be moved, what should happen? - ....ANSWER....The power supply switch to the equipment shall be opened. Lifelines. Where a welder must enter a confined space through a manhole or other small opening, what should occur? - ....ANSWER....Means shall be prov ided for quickly removing him in case of emergency. When safety belts and lifelines are used for this purpose they shall be so attached to the welder's body that his body cannot be jammed in a small exit opening. An attendant with a pre -planned rescue proc edure shall be stationed outside to observe the welder at all times and be capable of putting rescue operations into effect. What are 4 types of Steel Decking? - ....ANSWER....Composite, Roof, Cellular, and Form
