Test 4

Question 1

Whenever a high-pressure boiler is installed, what code will you be required to follow for pressure piping?

Answer 1

B31.1

Question 2

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 pipe or fitting normal steam flow path, without any unnecessary intervening pipe or fitting. Such intervening shall be not longer than?

Answer 2

Face to face dimension of the corresponding tee fitting of the same diameter and pressure

Question 3

The ASME boiler and pressure vessel code is law in Massachusetts. When installing a high pressure boiler you will refer to which ASME code section?

Answer 3

1

Question 4

Steam safety valves may be installed on the steam pipes between the boiler drum and the inlet to the superheater. Provided that the steam main between the boiler and points where a safety valve or valves may be attached has a cross-sectional area at least how many times the combined areas of the inlet connections to the safety valves applied to it.

Answer 4

2

Question 5

If you wanted to know the installation requirements for control devices for automatically fired boilers you would read which one of the following Massachusetts regulations?

Answer 5

522 CMR 16

Question 6

Connection between the boiler and the safety valve or safety relief valve shall be at least which of the following?

Answer 6

The area on the valve inlet

— doesn’t have to be larger but can’t be smaller

Question 7

Cast iron pipe can be used to carry steam at pressures up to what pressure (psi)?

Answer 7

250 PSI

Question 8

When a discharge pipe is used on a safety valve, the cross-sectional area shall not be less than which of the following?

Answer 8

Full area of the valve outlet

— can’t decrease

Question 9

What is the maximum temperature limitation for nonferrous pipe to be used directly attached to a boiler?

Answer 9

406°F

Question 10

The discharge pipe of a high-pressure safety valve shall be which of the following?

Answer 10

As short and straight as possible

Question 11

The largest safety valve that may be attached to a steam drum of a high-pressure boiler by threading is what pipe size?

Answer 11

3”

Question 12

All safety valves or safety relief valve discharge shall be so located or wiped as to be which of the following?

Answer 12

Carried clear from running boards or platforms

Question 13

What item is not common practice to use in piping up a reducing station?

Answer 13

Thermometer

Question 14

The installation of which (metal) type of safety relief valve body for high-temperature water boilers is prohibited?

Answer 14

Cast iron

Question 15

When welding high pressure piping that is within the boundaries known as boiler external piping you must have a what type of ASME stamp?

Answer 15

Power piping

Question 16

In accordance with ASME code section 1 if a muffler is used on a safety valve or safety relief valve it shall have sufficient outlet area to prevent back pressure from interfering with the proper operation and discharge capacity of the valve. Mufflers shall not be used under which of the following conditions?

Answer 16

High temperature water boiler safety relief valves

Question 17

The ASME code for heating boilers says that and ASME code section VIII expansion tank is required on a hot water boiler when the boiler pressure exceeds what pressure (psi)?

Answer 17

30 PSI

Question 18

Which stamp is required for the assemble of high-pressure boilers?

Answer 18

A stamp

Question 19

High pressure pipe welding and welders must be qualified to which section of the ASME code?

Answer 19

9

Question 20

An ASME code stamp is required for work on the high-pressure main steam line of a single boiler installation from the boiler proper outlet and out to which of the following?

Answer 20

First stop valve