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184 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Is 15 pound steam high pressure or low pressure?
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15 pounds of steam or less is low pressure. Above 15 pounds is high pressure steam.
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Is 15 pound steam high pressure or low pressure? |
15 pounds of steam or less is low pressure. Above 15 pounds is high pressure steam. |
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How many years can a license be expired before you have to retake the test? |
If your license is expired for one year or more you must retake the test. |
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When must a person have their high-pressure pipe license on them? |
You must have your H P P license with you at all times when working on high-pressure piping. |
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How old must a journeyman be to qualify for testing |
A Journeyman must be at least twenty years old. |
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How many years experience must a journeyman have to qualify for high pressure exam. |
A journeyman must have four years experience. |
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What must a Master journeyman score on the test to pass? |
You must have 70%.or Greater to Pass your HPP Exam |
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What are the steel specifications for carbon steel in ammonia lines? |
A106 seamless or a A333 seamless. |
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What must be provided to an inspector to verify heat numbers? |
Mill test reports. |
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1 1/2 inch pipe or smaller must be what schedule carbon pipe? |
Schedule 80 |
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2 inch and larger carbon pipe for ammonia service must be what schedule? |
Schedule 40 |
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How many seconds does a one quarter turn valve in an ammonia system take to go from fully open to fully closed? |
60 Seconds |
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What item may only be used when installing in series with pressure relief valve in an ammonia system? |
Rupture disc |
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Dual pressure relief devices in an ammonia system must be used if a pressure vessel is how many cubic feet or more? |
10 cubic feet |
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What size pipe and smaller may be used with socket or butt welding? Research this |
1 1/2 inch pipe and smaller. |
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What size pipe and larger must use butt weld fittings in ammonia systems. |
2 inch and larger |
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What is the minimum pressure rating for a union in an ammonia system? |
2000 pounds |
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In a 2000 pound forged Union , what type of joint is utilized? |
Ground joint |
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What is the largest pipe size that the union can be used in for ammonia piping |
Three-quarter inch and smaller |
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What is the laying length for a 4 inch long radius elbow? |
6 inches |
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What is the laying length for a 6 inch long radius elbow? |
9 inches |
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What is the laying length for an 8 inch long radius elbow? |
12 inches |
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What is the laying length for a 10 inch long radius elbow? |
15 inches |
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What is the length for a 45 degree long radius 4 inch elbow? |
2 1/2 inches |
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What is the laying length for a 6 inch long radius 45 degree elbow? |
Three and three quarter inch |
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What is the length for an 8 inch long radius 45 degree elbow? |
5 inches |
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What is the Laying length for a 10 inch long radius 45 degree elbow? |
6-1/4 inches |
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What is the expansion factor for steel pipe? |
.00 804 |
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What is the expansion factor for copper pipe? |
.0 11400 |
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What is the formula for finding the temperature, when PSI is known for saturated Steam? Revisit this question. |
Subtract the installation temperature from the working temperature and multiply times .00804 will equal 100 feet. |
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How do you convert a centigrade degree to a Fahrenheit degree? |
The Centigrade degrees times 9/5 (1.8) plus 32 equal Fahrenheit degrees. |
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What is the max hanger distance for 2 inch water pipe |
10 feet |
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What is the max hanger distance for 3 inch water pipe |
12 feet |
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What is the maximum spacing distance for 4 inch water pipe. |
14 feet |
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What is the maximum hanger distance for 6 inch water pipe? |
17 feet |
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What is the maximum hanger distance for 8 inch water pipe? |
19 feet |
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What is the maximum hanger distance for 12-inch water pipe |
23 feet |
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What is the maximum hanger distance for 2-inch steam pipe? |
13 feet |
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What is the maximum hanger distance for 3-inch steam pipe? |
15 feet |
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What is the maximum hanger distance for 4 inch steam pipe? |
17 feet |
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What is the maximum hanger distance for 6 inch steam pipe? |
21 feet |
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What is the maximum hanger distance for 8-inch steam pipe? |
24 feet |
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What is the max hanger distance for 12-inch steam pipe? |
30 feet |
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If you fail a Minnesota high pressure pipe test, will you need to submit a new application? |
Yes |
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If you fail a Minnesota high pressure test exam, will you need to pay another examination fee? |
Yes |
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How many days minimum, before examination , must a pipefitter apply for the test? |
15 days |
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How long is an application for a pipefitter exam good for after application? |
12 months |
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Who will the state of Minnesota "not" issue a license to? |
Anyone who requires training. |
Not a dummy, but they will issue to a licensed journeyman, and inactive journeyman, and a Contracting pipefitter. |
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Refrigerator piping, crossing an open space that affords passageway in any building, shall not be less than how many feet above the floor? |
Seven and one-quarter feet |
It can be less if the piping is located against the ceiling. |
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All parts of the refrigerator machine room mechanical ventilation shall be operable when occupied at a volume required not to exceed the higher of temperature rise of "what" degrees, or the maximum temperature of "what"? |
A rise of 18 degrees or a temperature max of 122 degrees Fahrenheit |
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The total amount of refrigerant stored in a Machinery room, and all containers not provided with relief valve and piping, shall not exceed how many pounds? |
330 pounds |
Additional amounts of refrigerant shall be stored and approved storage. This quantity was changed in 2009. |
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Can cast iron be used in an ammonia system? |
Yes if properly rated and assembled. |
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Can malleable iron be used in an ammonia system? |
Yes |
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Can steel pipe be used in an ammonia system? |
Yes |
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Can galvanized steel pipe be used in an ammonia system? |
Absolutely no |
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How much space must be allowed between ammonia piping and a wall sleeve? |
One-quarter inch |
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What is the maximum P S I copper or brass soldered fittings can handle in a low pressure steam system? |
15 pounds |
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What is the percentage allowed an increase above the s valve during 10% of the operating period? |
15% |
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What is the maximum increase in percentage above the S valve during 1% of the operating period? |
20% |
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Is Rod filler part of a welding procedure? |
Yes |
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Is direction of weld part of a welding procedure? |
Yes |
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Is filler material part of a weld procedure? |
Yes |
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Is speed of travel part of a welding procedure? |
No |
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Determine the expansion of 100 foot of 150 psi steam installed at 40 degrees Fahrenheit? This question needs revisiting. |
2-5/8" take a look at this for revision. |
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Does the Minnesota high-pressure piping laws apply to anything other than Steam and water? |
Yes, it also applies to other medium used for heating , bio pipe and ammonia systems. |
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Are Refinery and chemical process complexes that exchange heat with other product streams as part of the core process, applicable in the Minnesota high-pressure piping laws and rules? |
No |
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If your license is suspended or revoked who should you surrender the license to? |
The Department of Labor and Industry. DOLI |
It's a government office. |
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What are the minimum size letters on an ammonia sign in a machine room? |
1/2 inch |
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What is the minimum grade and schedule for threaded pipe in an ammonia system? |
A106 B Schedule 80 |
Type of metal and schedule. |
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How far should an ammonia relief discharge be from a window or vent intake? |
20 feet |
A stick of pipe would be close. |
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What is another name for a weld certification? |
Welders performance qualification |
Wpq |
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What is the inside diameter of instrument piping? |
.36 |
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A condenser coil must have? |
A relief |
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No valve she'll be used between a boiler and its water column unless it is of what type? |
Straight way type with Rising stem or lever and able to be locked open. |
It cannot be a ball valve, check valve, or a gate valve. |
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A 53 F pipe may only be used in ammonia systems when? |
Safety discharge to atmosphere |
A53 f cannot be used as Auto purge valve piping, compressor discharge piping, or liquid lines. |
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When considering ratios, how many unlicensed people can be supervised by a journeyman licensed person |
2 |
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When welders use the term Tig , what are they actually referring to as far as welding procedures ? |
GTAW (gas tungsten arc welding) |
SMAW is another type of procedure. |
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Is the horizontal weld test 1G , 2G, 3G, 4G, 5G or 6 G? |
2G |
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A welder must make at least one weld every how many months in that procedure to keep their certifications up to date? |
6 months |
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Steam an excess of how many PSI is considered high pressure? |
15 psi |
Fairly low |
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A journeyman has a gate valve, a globe valve, a quarter-turn with actuator valve, and an angle valve. Which one cannot be used in an ammonia system? |
Gate valve |
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What is the scientific term for ammonia? |
NH3 |
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What is the most common type of threaded fitting used in ammonia systems? |
Forged Steel |
Cast iron, malleable iron, and copper are not as common. |
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When comparing slip on fittings, butt weld fittings, socket fittings, and anal fittings , which is not used? |
Anal |
Really, you need a hint? |
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When considering back grouping, weld design, welding process, and cleaning pipe, which is considered in a weld procedure? |
Welding process |
Specifically it is included an a wpq |
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When considering impact testing, hydro testing, and magnetic particle testing, which is not a non-destructive test? |
Impact testing |
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What is the maximum PSI allowed where you can use a 2-inch threaded pipe? |
600 PSI |
Consider the nominal pipe PSI offered above 300 pounds |
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What are the degrees of placement in a pipe coupon to perform a 6G weld? |
45 degrees |
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Who mandates codes in the state of Minnesota? What department? |
Department of Labor and Industry |
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How much weight is allowed on a 5/8 all thread Rod when it is 650 degrees? |
2160 |
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Which test is not a bend test? A root test, a side test, a face test, or a rod section test? |
Rod section.
Root , face and side are considered legitimate test. |
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What is the main benefit of an OS & Y valve? |
You can easily see if it is open or closed |
Visibility |
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What is the four letter process that represents stick welding? |
Smaw |
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What is the maximum safe load for 3/8 hot rolled carbon steel threaded rod? |
730 pounds |
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What is the maximum safe load for a 1/2 inch hot rolled carbon steel threaded rod? |
1350 pounds |
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What is the maximum safe load for 5/8 hot rolled carbon steel threaded rod? |
2160 pounds |
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What is the maximum safe load for three-quarter hot-rolled carbon steel threaded rod? |
3230 pounds |
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What is the maximum safe load for 7/8 hot rolled carbon steel threaded rod? |
4480 pounds |
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What is the maximum safe load for 1 inch hot rolled carbon steel threaded rod? |
5900 pounds |
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If you are qualified to weld with any 6012 Rod what other Rod are you qualified to weld with? |
7024 |
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If you or a contractor, and receive your high pressure license on January 1 when is the latest date that you can renew your license? |
December 31st |
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Of the metal elements Copper, Brass, aluminum, and cast iron. Which of these fittings may be used on an ammonia system?
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Cast iron
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What is the minimum wall thickness for control tubing for Steam?
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0.028
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When performing a bend test, what is the reason to perform this test? Is it to determine strength, or degree and soundness of ductility?
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Ductility
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If you are taking a weld test with a pipe access in a fixed horizontal position, what test are you taking? What is the nomenclature of the position?
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5G
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What is the maximum temperature that copper pipe can be used in a high pressure system?
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406 degrees
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When can a 53 pipe be used in an ammonia system?
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Vent or release piping after the safety valve.
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Does the state of Minnesota issue a license to a trainee?
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No
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Find the travel of a rolling offset with a set of 13 inches and a run of 9 inches?
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The formula is the square root of the total of the set squared and the run squared (15.81)
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In the state of Minnesota who sets the mandates and code factors?
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The HPP board
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What pressure must a union be rated for in an ammonia system, and what is the maximum Union size? |
2000 pound rating with a maximum of three quarter inch pipe. |
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Must a union be welded in an ammonia system?
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Yes
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If an inlet to a blowdown tank is 1 inch what size does the vent need to be?
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2 1/2 inches.
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What is the minimum and maximum size of a water column blowdown for over one hundred square feet?
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Minimum is 1 inch and maximum is 2 1/2 inches
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If you employ non-registered apprentices, what are you required to do according to the Minnesota HPP board?
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Within 30 days inform the division of apprenticeship, name, age and date of employment.
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What materials are required for a 900-pound / 900 degree steam line pipe to a steam turbine?
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Chrome Moly A-335 or A-369 if 8 inch schedule 80
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Name three kinds of traps on HP condensate equipment? |
Mechanical trap, thermodynamic trap, thermastic trap |
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On a boiler feed line between the pump in the boiler, what is the percentage of Manufacturers Max allowable working pressure Allowed by code?
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80%
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If a drip pan L is not used for a relief valve, what precautions must be used on the Escape pipe?
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There can be no weight on the relief valve and the piping must be pitched away from the safety valve
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What valves are required on a steam outlet of a boiler where two or more boilers with manholes are connected to the same header?
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There must be a stop check on each and a stop valve on each with a FREE blow between them.
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On a boiler with a safety valve set at 250 pounds and the blow-off valves to blow down tank is 1-1/4 ", what size should the vent pipe be?
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3 inches, it should be two times the inlet size plus the next pipe size up.
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What are the two categories of feed water heaters?
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Open and closed
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A deaerator is one type and a heat exchanger is another type.
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Name 3 parts of a weld?
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Root penetration, face, and face "reinforcement".
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What are the flammable limits of ammonia?
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16, and 25
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Ammonia compressors with motors in excess of 250 horsepower must be equipped with anti recycle timers to prevent what?
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Short cycling
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How much weight is a half inch Rod rated for at 650 degrees Fahrenheit?
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1350 pounds
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The Safety Code requires a factor of "what" for the above the safety valve setting on all valves fittings and pipe used on the feed water piping between the boiler and the pump on a high pressure boiler
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100 percent + 25%125%
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Name four types of non-destructive welding examinations?
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X-ray, dye penetrant, mag particle, and visual examination
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Before erection, all valves, fittings, Etc. Shall be capable of withstanding a hydrostatic shell test equal to how many times the primary steam service? |
2 |
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In an ammonia system, to use a lateral connection on a compressor with a 4 inch discharge line, the main must be at least how many inches?
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6 inches
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Two pipe sizes larger
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The root opening of a welded joint shall be detailed in the what?
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Weld procedure
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Seal welding of threaded joints is permitted provided that all threads are what?
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Covered
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The welding procedure shall be such as to ensure substantial full root penetration and "what" of the deposited metal with the base metal?
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Thorough Fusion
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The welding procedures shall be such as to assure substantially full "what" and thorough Fusion of the deposit metal with the base metal?
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Root penetration
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Brass or copper tube may be used in Steam and water systems, where a temperature of Fahrenheit is does not exceed?
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406 degrees
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Show by your figures how you would estimate the expansion of a steel pipeline 400 foot long installed at a temperature of 60 degrees Fahrenheit and an operating temperature of 387 degrees Fahrenheit? What is the expansion in inches?
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10.5 inches. Subtract 60 degrees from 387 degrees you will arrive at 327 degrees. Multiply 327 degrees times the factor of .00804. And you will arrive at 2.63. Multiply 2.63 times 4 to represent the four hundred feet . The equation equals 10.5 inches.
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1 quarter turn valves may be used for an ammonia system. True or false?
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True
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What type of materials may be used on Vapor lines in an ammonia system? Name three?
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A 53 Grade B seamless , A53 Grade B ERW , A106 Grade B seamless
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Either pressure or temperature, or both, may exceed the nominal design values if the computers stress in the pipe wall does not exceed the allowable s value for the expected temperature by more than the following allowances for the period of duration indicated.
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15% increase above the S value during 10% of the operating., or 20% increase above the S value during 1% of the operating.
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If the pipe test is horizontal and can't be rotated, what will test are you taking? What position?
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5G
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The maximum load on 3/8 all thread carbon steel rod is maximum of how many pounds?
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730 pounds
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What is the smallest all thread carbon steel rod allowed as a hanger?
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3/8 of an inch
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On pipe two and a half inches or larger, no smaller Rod can be used then what?
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1/2 inch
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The maximum temperature for copper pipe or tubing in a steam system is what?
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406 degrees
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What is the minimum size pipe for an H2O column?
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1 inch
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What is the minimum diameter of a vessel requiring a relief valve on an ammonia system?
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6 inches
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Each relief valve on ammonia system must have the capability of letting the pressure rise no more than what percent?
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10%
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Ammonia system relief valves discharging piping, must be how many feet above the roof?
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15 feet
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A in an ammonia system, a drip pocket the same size of the discharge piping must be at least how many inches in length?
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24 inches
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Two more blowdown valve required over what PSI
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100 PSI
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What are the requirements for the 2 blowdown valves in boilers over 100 PSI?
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Rated for the blow down service
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What blowdown valve is closest to the boiler?
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The quick opening.
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What is the maximum size of a blowdown valve on a boiler over 100 square feet? |
4-1/2 inches |
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What is the minimum size pipe for an H2O water column?
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1 inch
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If an H2O column has a valve, what are the requirements of this valve?
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Straight way with lever or a rising stem valve and she'll be locked or sealed open.
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Should a safety valve be installed on a water column?
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No
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The quick opening valve on a water column has to be what type?
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A plug type with gland, or a plug gland closer to the boiler.
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When must there be two means of feed water to the boiler?
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When the boiler is over 500 square feet
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A feed water pump must be able to supply water to a boiler at what percentage above the safety setting?
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6%
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What is the safety Factor on pipe and fittings on feed water?
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1.25% above the lowest set pressure of the safety valve.
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If feed water pumps are positive displacement what is needed?
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In line safety valve.
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What is the name of two types of feed water heaters?
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Deaerator (open), or closed ( heat exchanger)
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A deaerator is one and the heat exchanger is another
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What are the two functions of a deaerator tank?
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The two main functions are to remove oxygen down to 7 parts per billion, and remove essentially all carbon dioxide.
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What fitting is installed at the base of a relief stack?
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A drip pan elbow
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Does an economizer require a safety valve?
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Yes,
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Where should a safety valve terminate, or exhaust to?
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A safe location.
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What does prv stand for?
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Pressure reducing valve
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What two things are required on a prv?
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A gauge and a pressure relief mechanism
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What four valves are required on a single stage high pressure boiler? |
A blowdown valve ( lowest point to empty the boiler) a main shut off valve (to isolate the system piping from the boiler), a relief valve to relieve excessive pressure), and a feed water valve ( for water supply) |
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Name the three types of bend test?
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A root test, a face test, and a side test.
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Name the three types of weld fittings.
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A socket weld, a butt weld, and a slip on.
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A 1G weld test is done how?
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1G is a flat weld using a Groove joint. The 1G pipe position is a pipe in the horizontal position in the pipe is rolled when welding.
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Easiest weld
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What is a 2G pipe test?
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The pipe is in a vertical position in the weld is performed horizontally.
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What is a 5G weld test? What is the position and rotation of the Weld and pipe?
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The pipe is in the horizontal position, there is no rotation, and the weld is vertical.
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What is a 6G weld? What is the position and rotation of the Weld and pipe?
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The pipe is at a 45 degree angle and it is considered an all position weld.
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What is the pressure requirement for testing after erection on a steam system?
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1 1/2 the operating pressure.
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What does os&y mean? |
Outside stem and or alternatively outside screw and yoke. It is a description of a gate valve. |
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What is the minimum hydrostatic pressure and maximum temperature for testing.
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The minimum pressure is 1 1/2 times the operating pressure. The maximum temperature is 120 degrees.
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The term weld cert is actually what?
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The pqr, or the procedure qualification record.
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Who mandates and sets rules for code piping in Minnesota?
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The HPP Board of the Department of Labor and Industry (HPP board)
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A licensed fitter can only supervise how many unlicensed people?
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2
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What is the maximum nominal pipe size that can be used in ammonia piping systems? This question needs revisiting |
1 1/2 inch (?) this is a poor question that needs better research or to be deleted. |
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Ammonia compressors with motors in excess of 250 horsepower must be equipped with what to prevent short cycling?
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Anti recycle timer
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What is the expansion constant Factor for 100 foot of cast iron pipe. |
.00780 |
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