[0:01]Hi guys, welcome to Piping Welding and DT Channel. So here is the question paper for the five liter. Number one, what are the common cause of flange leak? A, Centering gasket, C, Damaged flange face, B, Out of parallel flange face, D, All of the above. So just write your comment. What is your answer? So number two question is, the material of gasket used in hot lines, flange rating 1500# is A, Rubber, B, Teflon, C, Spiral Wound, Grafoil and D, Aluminum. Okay? Number three question, what is meant by schedule of a pipe? A, Diameter, C, Hardness, B, Wall thickness or D, Cost. Number four, the purpose of Safety Relief Valve is A, Over pressure protection, C, Emergency Vent, B, Control Flow and Control temperature, Letter D. So number five.
[1:43]This is number five. What type of thread is found in pipe fittings with threaded joints? A, UNC, B, UNF, C, NPT, BSW. So number six, this is the number six, what type of valve is used to prevent back flow? Check, globe, gate or plug. Number seven, what is the correct sequence of opening flange bolt? So A, 1,2,3,4,5,6,7,8. So please choose what is the correct answer for opening flange bolt. So number eight, what is the purpose of stand off blind? A, For technician stand, isolate the equipment, and to stay clear while pressure on and for purging vessel.
[2:59]So this number nine, what is the purpose of gasket between flanges? So here is the choices, and D to seal gas/liquid under.
[3:16]So this number ten, what is the appropriate tool to be used in tightening FRP pipeline? Torque wrench, so this is, this is brass hammer, pneumatic wrench and impact wrench. So this is the pipe fitter questioner. So next.
[3:50]Number 22. So why do you use brass hammer to open a depressurized hydrocarbon lines? A, Brass hammer can be easily dressed, C, Brass is lighter than steel, B, Brass does not spark and D, Brass is heavier than steel.
[4:23]So 23, what is the purpose of steam trap in a steam line? A, To remove rust particles, B, To remove excess steam, C, To remove condensate water and D, To control pressure in a steam line.
[4:53]One of the duties of the standby man when you are inside of the vessel is, so if you are inside the vessel, what is the duties? A, To give you a company, C, To provide you with water, to warn you unsafe condition and to inspect your job. 25, Why Acetylene cylinder should not be kept horizontal while in operation? So this is the choices, A, B, C or D. 26, which statement is true?
[5:44]Letter A, a full face gasket can hold higher pressure than flat ring gasket, B, a wire reinforced CAF gasket is used in acid service, C, a spiral wound gasket with graph oil filled is best for steam service, or D, the metallic outer ring in a spiral wound gasket provides ability to seal high pressure.
[6:19]So 27, when you open a horizontal flange joint at your face level you must wear a full face shield, open the opposite end first, have the correct size ring spanner, all of the above.
[6:43]28, what is the recommended size of the pipe wrench for a 1 inch threaded nipple? 12 inch, 16 inch, 1 1/2 inch or 2 inch. Which equipment do you find a component called Demister? So this is for the equipment component called Demister. So what's that? Heat exchanger, vessel, pump or storage tank. 30. To remove the internals of a vessel, the following will required.
[7:38]So here's the choices: A, B or D.
[7:58]Next.
[8:05]What is the purpose of a spring hammer support in compressor piping? So what is the purpose of spring hanger? A to prevent gas purge, B to protect the structure, C to compensate for thermal expansion or D to absorb vibration. So what type of gasket can be expected find 6 inch class 900# flange in steam? So A flat ring, C&F, B spiral wound gasket with graph oil filled, or C spiral wound gasket with Teflon fill and D, fiber reinforced rubber gasket.
[9:04]Next is, out of this items below what is relevant to confined space working? So here's the choices, A, B, C, D. When you say flange 4 inch x class 1500# WNRF what is meant by class 1500#?
[9:40]A, B, C, D. Next, a hydraulic bolt tensioner is used for, A, B, C, D.
[10:29]Next, why grease and oil not recommended on Oxy-Acetylene gas cutting appliance?
[10:43]They clog the cutting nozzle, B, they cause damage to rubber hose and D, they can cause explosion. So this is the letter C, oil and grease not good for the brass. 70, what is the correct size spanner to be used in case of a 1 inch in nut? So 1 inch nut. So this is the size of nut. So we have a formula for this.
[11:18]Formula for this is size of nut multiplied by 1.5 + 1A. So 1A3MM, okay? So here's the choices: 1 5/8 inch, 1 inch, 1 1/4 inch and D, 1 1/2 inch.
[11:48]So next, which valve has direction arrow mark on its body? Gate valve, globe, ball valve and safety relief valve. Next, which one of you think the most dangerous gas used in the plant, also called a silent killer? This is Oxygen, Carbon dioxide, Nitrogen or hydrosulfide. How many bolts do you see in a 4 inch x 300# flange joint? Is this 4, 12, 8 or 6? What last, this is the last, what do you use, what do you, what do you see inside a distillation column? This is strainer, impellers, trays or tubes.
[12:52]So write your comment for this question paper for the pipe fitter, okay? And we'll talk about for this piping questioner for the pipe fitter. So thank you so much guys and have a nice day. Bye bye.
