2Nd Fireman License, High Pressure Boilers, Chapter 3, Exam Q&a

Boiler fittings are necessary for ____

To prevent failure from pressure over the MAWP, all steam boilers must be equipped with at least one ____

The purpose of a safety valve is to ____

Safety valves are designed to ____

When testing a safety valve manually, there must be ____

Any repairs to the safety valve must be done by the ____

A(n) ____ test is used to test the relief capacity of a safety valve

____ pressure is the pressure caused by the weight of a column of water

A cyclone separator is a cylindrical device that separates water droplets from steam using ____

A steam pressure gauge must be protected by a siphon to prevent ____

The correction factor for hydrostatic pressure is ____ psi per vertical box

The boiler vent is open when warming up a boiler until ____

Separators work on the basic principle of ____

The dry pipe separator is located in the ____

The ASME code states that high pressure boilers in battery (two or more boilers connected to a common header) and equipped with manhole openings must have _____

A main steam stop valve should be a(n) _____ valve

A main steam stop valve should be a gate valve because a gate valve _____

During boiler inspection, the main steam stop valves are _____

When warming up a boiler, the ____ is in the open position until the boiler gauge registers about 10 psi to 25 psi.

During normal usage, ____ are used to allow for the expansion and contraction of the main steam line

Boiler safety valves are placed at the highest part of the ____

A safety valve must be capable of discharging all the steam without the pressure increasing more than ____ % above the maximum MAWP

A safety valve opens when the ____ exerted by the steam exceeds that of the spring

____ fittings are used for water columns operating above 350 psi

The ____ is the part on a safety valve that increases the area of the safety valve disc

All drains and piping in a safety-valve ____ system must be piped to a safe discharge area to prevent possible injury to personnel.

A safety valve must close tight without ____

Typically, safety valves on boilers 15 psi to about 400 psi should be manually tested once a month and pressure-tested ____

Both the ____ and the automatic non return valve should be dismantled, inspected, and overhauled annually.

Which two methods involved with a drum internal/steam separator are used to remove moisture from steam? _____

What is the class room definition of safety valve blowdown? ____

What is blowdown pressure? ____

What’s the difference between screwed in safety valves and flange/welded safety valves?

True or false: it’s good if a boiler’s safety valve(s) goes off on a regular basis.

What’s another name for safety valve oral test inspectors might like to hear?

Why does a safety valve have a drain?

What are pressure gauges set to?

What is a local gauge?

What’s a “boilers in battery” mean?

Boilers over 100 psi require how many bottom blowdown valves?

What needs to be removed from the boiler through the vent?

What’s on a “Safety Valve Data Plate?”

Steam boilers having more than 500 sq ft of heating surface require how many safety valves?

What is a spring-loaded pop-type safety valve?

Why should the main steam stop valve be an outside stem and yoke (OS&Y) type?

What is the lever on a safety valve used for?

Explain what you can do with a 2nd class fireman’s license.

_____ is used for water columns operating above 350 psi.

electric boilers exceeding 500 kW of input require _____

The safety valve on a steam boiler must be capable of discharging all the steam the boiler can generate without the pressure increasing more than _____ % above the set pressure.

The area of a safety valve's valve disc can be found by _____

The _____ is the part on a safety valve that increases the area of the safety valve disc

Typically, boilers 15 psi to about 400 psi should be manually tested ____

Spring-loaded pop-type safety valves are used for pressures up to ____ psi

A pressure gauge should have a range of up to _____ times the safety valve setting

If a steam pressure gauge is not accurate to within _____ % of the working pressure, it must be recalibrated or replaced.

_____ remove any moisture and solids remaining in the steam before it leaves the steam drum

Main steam stop valves should be of the _____ type, which will show by stem position whether the valve is open or closed.

An automatic nonreturn valve must be located as close to the ____ as possible

Boilers operating at ____ psi or more are required to have two bottom blowdown valves mounted on the same blowdown line.

State definition of a safety valve?

What is the difference between a safety valve and a relief valve?

What does an OSY valve tell you?