Journeyman Pipefitter Test 2024-2025. Questions and Correct, Verified Answers. Graded A+, Exams of Refrigeration and Air Conditioning

Download Journeyman Pipefitter Test 2024-2025. Questions and Correct, Verified Answers. Graded A+ and more Exams Refrigeration and Air Conditioning in PDF only on Docsity! Journeyman Pipefitter Test 2024-2025. Questions and Correct, Verified Answers. Graded A+ 12 boiler stop valves are required on a high pressure boiler what shall be required - ANSStop check free flow gate valve 522 CMR 16 automatic control for automatically fired boilers requires that when multiple process controls are mounted on or fed from manifold the manifold and common source connection to the boiler shall be at least white pipe size - ANS3/4" A 3/4 blow off may be used on a high pressure boiler if the boiler heating surface is less than how many square feet on the heating surface - ANS100' A Massachusetts pipefitting license is required to work on heating systems with a BTU heat input greater than - ANS700,000 btu a safety valve over 3" and over 15 psig shall have what type of inlet connection? - ANSflanged or welded A siphon is used to - ANSDevelop and maintain a water seal to prevent steam from entering the gauge tube A slow opening Valve requires how many complete turns to be fully opened or closed - ANS5. 360 degree turns According to the a SME high pressure boiler code a boiler that has more than how many square feet of heating surface must have two or more safety valves - ANS500 ft.² After Field assembly of a cast iron steam heating boiler you are required to hydrostatic test it. The assembled boiler shall be subjected to a hydrostatic test of not less than white pressure - ANS1.5 times working pressure All safety valve or safety relief valve dischargers shall be located or piped as to be - ANSClear from running boards or platforms All valves and fittings on steam lines for boiler external piping of high pressure boilers shall have a pressure rating of at least - ANS250 psig An altitude gauge is required on a hot water supply boiler when the altitude is more than how many feet - ANS20 An ASME code stamp is required for work on the high-pressure main steam line of a single boiler installation from a boiler proper outlet to what - ANSThe first stop valve ASME B31.3 Power piping code limits the size of slip on flanges to be used for boiler external piping this size limitation is white pipe size in diameter - ANS4 inches ASMEB311 power piping code requires that boiler blow off fittings shall be steel and the thickness of the pipe and fittings shall not be less than that of schedule 80 pipe when the boiler pressure exceeds white pressure - ANS100 psig ASMED311 power piping code part six boiler external piping requiring the attachment of slip on flanges shall be by what type of welds - ANSDouble fillet welds Cast iron fittings can be used to carry steam at pressures up to what - ANS250 psig Dial of the pressure gauge on a high-pressure boiler Shelby graduated to no less than how many times do pressure at which the safety valve is set - ANS1.5 times Each high temperature water boiler she'll have a bottom drain connection of at least how many inches in direct connection with the lowest water space practical - ANS1" For high pressure boilers having a water heating surface of more than 100 ft.² of heating surface the feed connection to the boiler shall not be smaller than white pipe size - ANS3/4" Gauge glass drains she'll have an unrestricted drain opening of not less than - ANS1/4" The discharge pipe of a high-pressure safety valve shall be - ANSCross-sectional area shall be not less than the full area of a valve outlet short and straight as possible to avoid undue stress on the valves The heating boiler code requires that when a stop valve is used in the supply pipe connection of a single steam boiler there shall be an additional stop valve placed where - ANSIn the return pipe connection The installation of which type of safety valve body for high temperature water boilers is prohibited - ANSCast iron The largest safety valve that may be attached to a steam drum of a high-pressure boiler by threading is what pipe size - ANS2.5" The maximum size of a surface blow off connection shall not exceed - ANS2.5" The maximum suggested pipe support spacing for 6 inch pipe for water service would be - ANS17' The maximum suggested pipe supports spacing for 6 inch steam gas or air service is white - ANS21' The minimum pressure rating of all valves or cocks on a heating boiler shall be at least equal to - ANSThe pressure stamped on the boiler The minimum size of blow off pipe and valve required on a cast iron heating boiler with a safety valve relieving capacity of 3000 pounds per hour is what - ANS1" The minimum temperature rating for all valves or Cocks on a heating boiler shall be at least equal to how many degrees Fahrenheit - ANS250 The minimum temperature rating of all valves or cocks on a heating boiler shall be at least equal to what temp - ANS250°F The most appropriate valve application for a surface blow down system would be what valve - ANSMeter valve The opening or connection between the boiler and the safety valve or safety Relief valve shall be at least - ANSThe area of the valve inlet The Pipefitter license is governed by chapter 146 of MGL the section of this law is section what - ANS81 The purpose of a safety valve is to - ANSProtect the boiler from excess pressure The required boiler feedwater stop valve on a high pressure boiler is located between what - ANSThe boiler and the check valve The return pipe connections of each boiler supplying a gravity return steam heating system shall be so arranged as to form a loop so that the water in each boiler cannot be forced out below the safe water level. This loop is most commonly known as - ANSThe Hartford steam loop The safety valve or safety relief valve or valves shall be connected to the boiler independent of any other connection and attached as close as possible to the boiler or the normal steam flow path without any unnecessary intervening pipe or fitting such intervening pipe or fitting shall not be longer than - ANSThe face to face dimension of a corresponding tee fitting of the same diameter and pressure The size of bottom blow down lines can be reduced under what conditions - ANSThey cannot be reduced The steam and water connections to a water column or water gauge glass on a high pressure boiler shall be such that they - ANSReadily accessible for internal cleaning and inspection The valve that offers the least resistance to flow is what - ANSGate Valve The water column shall be fitted with the drain cock or drain valve to install a pipe of at least white size in inches - ANS3/4" Two Low Water cut-offs are required on a steam heating boiler when - ANSThe Boiler has pumped condensate returns and has an input over 200,000 BTU Water hammer in steam lines is caused by what condition - ANSCondensate in the steam line What cast iron item is not allowed on a high-pressure boiler - ANSNozzles and flanges What is a non-return and where is it used - ANSWhen two or more boilers are connected to a common header What is mandatory to have installed on a separate connection on a hot water heating boiler - ANSThermometer What is the maximum temperature limitation for nonferrous pipe to be used directly attached to a boiler - ANS406°F What is the minimum size of the drain pipe and the blow off valve required on a low water cutoff that has a separate float chamber - ANS3/4" What item is not common practice to be used in piping a reducing station - ANSThermometer What stamp is required for an assembly of a high-pressure boiler - ANSA What type of fitting must be placed in the water piping connection at every right angle to facilitate cleaning and inspection of a water column of low water cutoff - ANSCross fitting When a discharge pipe is used on a safety valve the cross-sectional area shall not be less than - ANSFull area of the outlet of the valve When a high pressure boiler plant only has one boiler which statement would be true - ANSAn automatic non-return valve is not necessary When are steam valves required - ANSEach boiler outlet