PETROVIETNAM MANPOWER TRAINING COLLEGE No 43, 30/4 Road, Ward 9, Vung Tau, Vietnam Tel: (064) 3838157; Fax: (064) 3838452 Web: http://www.pvmtc.com.vn No Questions Answer Q For a liquid or a gas to flow, there must be a difference in: pressure Q Throttling refers to regulating flow: rate Q When a valve is partially open, it is said to be in then position maximum flow Q The main function of packing in a gate valve is to: stop leakage This Q is referred to the exhibit number (A, B, C) solid wedge gate Q Gate A is a: Q Q Q Gate Valve When conditions require that a valve must be quickly opened and closed, which kind of valve should be used? Plug valve Verical lift check valve PETROVIETNAM MANPOWER TRAINING COLLEGE No 43, 30/4 Road, Ward 9, Vung Tau, Vietnam Tel: (064) 3838157; Fax: (064) 3838452 Web: http://www.pvmtc.com.vn Q The main function of a check valve Q 10 The rate of flow Bonnet Look at this picture of a valve Point A is the Q 11 Body Look at this picture of a valve Point B is the: Q 12 The gasket The fix this leak, the worker probably has to replace PETROVIETNAM MANPOWER TRAINING COLLEGE No 43, 30/4 Road, Ward 9, Vung Tau, Vietnam Tel: (064) 3838157; Fax: (064) 3838452 Web: http://www.pvmtc.com.vn Q 13 Check valves are used for unidirectional flow Q 14 The most economical flow control valve for use with large diameter pipes is a Butterfly valve Q.15 Two piping system are said to be equivalent, when the are same fluid flow rate & friction loss Q 16 A tube is specified by its thickness & outer diameter both Q 17 Nominal size of a pipe is an indication of its diameter approximate Q 18 For pipes that must be broken at intervals for maintenance, the connector used should be a/an union Q 19 The nominal size of a hose pipe is specified by its Q 20 Q 21 ID The valve commonly used in pipes larger than 2" diameter is a Gate valve Nominal Pipe Size (NPS) of a pipe less than 12 inches in diameter indicates its Neither inner nor outer meter Q 22 Which type of equipment is not a kind of piping equipment? Furnace Q 23 Eccentric Reducer The equipment bellow is called as Q 24 Body of gate valve can not be made by PVC PETROVIETNAM MANPOWER TRAINING COLLEGE No 43, 30/4 Road, Ward 9, Vung Tau, Vietnam Tel: (064) 3838157; Fax: (064) 3838452 Web: http://www.pvmtc.com.vn Q 25 Ball valve The name of valve in picture below is Q 26 The valve body can not be connected to the process piping by: Glue Q 27 This type of pipe is commonly used for water, steam, oil, and gas: Steel or wrought iron Q 28 Diaphragm valve is used for following case : Fluid metal – corrosive or sticky Q 29 This type of pipe is commonly used for water or gas service, and also as soil pipe Cast-iron Q 30 Lift check valve is used for horizontal pipe Q 31 Flat face Q 32 Socket weld flange Q 33 What is diffirence of relief valve and safety valve Relief valve are used n liquid services and Safety valves PETROVIETNAM MANPOWER TRAINING COLLEGE No 43, 30/4 Road, Ward 9, Vung Tau, Vietnam Tel: (064) 3838157; Fax: (064) 3838452 Web: http://www.pvmtc.com.vn are used in das services Q 34 ID of 1/4" schedule 40 pipe is 0364" ID of a 1/2" schedule 40 pipe would be inch Q 35 This is not the purpose of piping inspection? Q 36 Socket welded joints are made by inserting the end of the pipe into a recess in a fitting or valve and then………the joint 0.622 Weld the piping Fillet welding Q 37 Factors to consider when classifying piping are: A) Toxicity B) Combustibility C) Volatility D) All of these Q 38 All of these Erosion is the removal of surface material by the action of numerous individual impacts of A) solid B) liquid particles C) cavitation D) All of these All of these Ultrasonic testing (UT) is a family of testing techniques based in the propagation of ultrasonic waves in the object or material tested Non destructive Q 39 Q 40 Which of the following statements is the advantages of Ultrasonic testing (UT) High penetrating power, which allows the detection of the flaw deep in the part Q 41 Radiographic Testing (RT) is a method of inspecting materials for hidden non-destructive flaws by using the ability of short wavelength electromagnetic radiation (high energy PETROVIETNAM MANPOWER TRAINING COLLEGE No 43, 30/4 Road, Ward 9, Vung Tau, Vietnam Tel: (064) 3838157; Fax: (064) 3838452 Web: http://www.pvmtc.com.vn photons) to penetrate various materials Q 42 Nonmetallic piping systems are often used for fluids that is Environmentally benign Q 43 pressure test conducted onpiping system can be tested for All of these Q 44 When test the speed of leak in the ball valve, the test time depends on : Class of valve Q 45 The pipe fitting which makes a 180° turn is called a/an… Return fitting Q 46 Q 47 Which type of gasket is most frequently used in a high-pressure hydraulic system assembled with socket weld flanges? O ring Before breaking open the pipe joints for repair, what should be done with the isolation valves on a high pressure steam system? Check that the valves are closed, tagged and locked out Q 48 Which of the following is not a reason for using cutting oil when threading pipe? To protect threads from rust Q 49 Internal Visual Inspection for Piping system include following duties: A) Inspection Corrosion, Erosion, and Fouling B) Inspection cracks C) Inspection Gasket Faces of Flanges D) All of these All of these Which type of following Ultrasonic thickness instrument can measure pipe with 0.04 Q 50 in to 20 in diameter? Numeric thickness readout Q 51 External Visual Inspection for Piping system include following duties: Inspection lecking Q 52 Which of the following is the type of pipe inspection plan? A) Safety PETROVIETNAM MANPOWER TRAINING COLLEGE No 43, 30/4 Road, Ward 9, Vung Tau, Vietnam Tel: (064) 3838157; Fax: (064) 3838452 Web: http://www.pvmtc.com.vn B) Describe any required repairs Describe any required repairs Q 53 Which of the following is the task of the inspection plan? A) Shedule required to monitor damage mechanisms B) Reliability and Efficient Operation C) Safety Q 54 Which of the following is an aim of pipe inspection plan? A) A leak or failure a piping system B) Efficient Operation C) Finding out and complementing the default Q 55 What should inspector consider following? A) Planning work the collaborative B) Operating pressure ranges Q 56 Which of the following should to develop an inspection plan? A) Identifying and evaluating the process fluid B) Collaborative work of the inspector Q 57 Suiting the fluid working with Nonmetallic Piping? Q 58 Kind of the traditional NDE techniques assess the nonmetallic piping? Q 59 Purpose of testing? Q 60 Performing of pressure testing? Shedule required to monitor damage mechanisms