Chapter 93- Basic Fittings For Low Pressure Steam Boilers

Question 1

All fittings that are not clearly identifiable should be

Answer 1

Rejected

Question 2

All markings shall be legible and must have the following requirements

Answer 2

Manufacturers name or trademark
Service designation
Material designation

Question 3

Steam boiler fittings are defined as

Answer 3

Devices directly attached to the pressure part of the boiler

Question 4

Three methods of testing the accuracy of a pressure gauge is

Answer 4

Test gauge comparison
Dead-weight tester
Hydraulic comparator

Question 5

What is test gauge comparison

Answer 5

Attaching an accurate gauge to a boiler while in operation to compare the accurate gauge with the gauge being tested

Question 6

An essential fitting between the boiler and the steam pressure gauge is

Answer 6

A siphon

Question 7

A steam pressure gauge may be graduated in

Answer 7

Kilo pascals

Question 8

The scales on a pressure gauge for a steam heating boiler shall be graduated between one of the following

Answer 8

200 to 414 Kpa

Question 9

An inspectors test connection is

Answer 9

No mandatory on lp boilers

Question 10

When installing a siphon it

Answer 10

Should be first filled with water

Question 11

When using a dead weight tester, the effect of friction

Answer 11

Is reduced by rotating the platform

Question 12

The working medium in the dead weight tester is

Answer 12

Medium weight oil

Question 13

Hydraulic comparators, which are used for testing gauges, rely on the accuracy of the

Answer 13

Master gauge

Question 14

On a multiple steam heating system, a stop valve must be placed attach boiler outlet to

Answer 14

Allow boiler isolation from the system

Question 15

On low pressure steam boilers, the boiler outlet valves are ussually

Answer 15

Gate valves because of there low resistance to flow

Question 16

An outside screw and yolk valve

Answer 16

Readily shows its operating position

Question 17

A boiler feed water stop valve

Answer 17

Is used to isolate the feedwater line

Question 18

A globe valve should be used in the feedwater line

Answer 18

At all times

Question 19

A stop valve is fitted between the boiler and the feed water check valve

Answer 19

For isolation and to provide a positive shutoff

Question 20

Boiler foaming may be a result of

Answer 20

High TDS

Question 21

Boiler blowdown lines have a specific size range based on

Answer 21

Boiler capacity

Question 22

Boiler blowdown piping must be

Answer 22

Full size to the point of discharge

Question 23

A steam boiler is blown down in order to

Answer 23

Discharge sediment and scale forming matter from the boiler

Question 24

A steam boiler is blown down in order to

Answer 24

Discharge sediment and scale forming matter from the boiler

Question 25

The purpose of the small vent valve or cock located on top of the shell or on top of the water column on most boilers

Answer 25

To allow air to escape from the boiler when the boiler is being filled with water

Question 26

When the steam outlet is 51mm pipe size or larger, it is recommended that a ___________ valve with a rising stem a used

Answer 26

OS&Y

Question 27

What fitting is required in the feedwater line adjacent to the boiler before the stop valve?

Answer 27

Check valve

Question 28

A function of the bourdon tube hairspring is to

Answer 28

Eliminate backlash or play in the pointer

Question 29

An essential fitting between the boiler and the steam pressure gauge is the

Answer 29

Siphon

Question 30

According to ASME code section IV, steel or wrought iron pressure gauge connections are to be a minimum of ______ mm in pipe size

Answer 30

13.7