MN HP Code Quiz 2 Review Flashcards

Flashcards created from MN HP Code Quiz 2 covering offset calculations, boiler valve types, sleeve clearances, trap discharges, high-temperature requirements, and thermal expansion.

Calculated travel for a $45^{}$ Degree pipe offset with a center-to-center run of $28\,\text{inches}$

Travel: 3’ 3 9/16”

What are the four functional valves found on all steaming boilers?

1. Main steam valve

2. Feed water valve

3. Blow off valve

4. Safety valve

What is the minimum clearance required around a pipe or pipe covering when passing through a pipe sleeve?

$1/4\,\text{inch}$ ($1/4"$).

What shall the discharge of a high pressure trap run through before emptying into a low pressure receiver?

A flash tank.

When the temperature exceeds ___

F, only bolt studs are recommended.

750

How should thermal expansion of piping preferably be provided for?

• pipe bands

• Offsets

• Expansion loops

• Changes in direction of Pipeline

• Mechanical expansion joints

Variations in pressure and temperature not exceeding the allowable S value may occur

Up to 15 percent increase during the event for no more than 8 hours, 800 hours per year.

For all lines under pressure and above $250^\circ\text{F}$, what should the gasket material be composed of?

Asbestos, non-burning material, or metallic material.

How many valves are required in a drain line?

1

Under what temperature condition must piping be insulated when passing through pipe sleeves?

When the temperature is over $250^\circ\text{F}$.