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Phase 2 T1 > Sean > Flashcards

Sean Flashcards

0
Q

At what temperature will water freeze at

A

0 degrees Celsius

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1
Q

List 3 characterists of water

A

Odourless tasteless and transparent

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2
Q

What is mild steel pipe also know as

A

Low carbon steel

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3
Q

Why can’t you use mild steel pipe on a fresh water system

A

It will cause coroson problems

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4
Q

What is the purpose of a flash back arrestor

A

To prevent sparks from getting into the bottles

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5
Q

On what type of installation would victualling joints be used

A

Sprinkler system

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6
Q

When piping a steam installation what type of jointing compounds would you use on threaded joints

A

Ptfe and black foliac

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7
Q

What is the circumference of a circle

A

Is the outer area of the circle

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8
Q

Water can be classified as 2 types. Name the types

A

Hardness and softness

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9
Q

Why do copper pipes burst when they freeze

A

Because the copper pipe expands which is not able to stand the strain which would make it burst

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10
Q

What is 3000 litre of water equal to in kg

A

3000 kg

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11
Q

Explain radiation and give an example

A

Is the heat that is given off in straight lines example of that is below heater

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12
Q

What is the purpose of an expansion joint/loop

A

So it can give the pipe some room to expand and move

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13
Q

Name 4 pure metal used in plumbing

A

Copper iron zinc and tin

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14
Q

Give 2 reason for insulating a storage cistern

A

To prevent heat loss and to keep it cool during the summer

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15
Q

Name 3 good metal conductors of heat

A

Copper brass and mild steel

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16
Q

Explain what tempering is

A

Is when the pipe is heated then it gets cooled down after it for it to Harding

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17
Q

What does everything inside the border of a drawing form

A

A contractor

18
Q

List 3 pieces of information you would find on a specification

A

The fittings to be used. The location of the barracks . The pipe to be used

19
Q

List 3 characterists of water

A

Odourless tasteless and transparent

20
Q

At what temperature will water freeze at

A

0 degrees Celsius

21
Q

What is the purpose of a regulator on a gas cylinder

A

To allow you adjust the pressure you want

22
Q

List 3 methods of joining mild steel pipe together

A

Threaded welded and electrical grooving

23
Q

What is mild steel pipe coated with to make it galvanized

A

Zinc

24
Q

What pressure is an oxygen bottle pressurised to

A

230 bars

25
Q

What reacts explosively with oxygen

A

Oil grease and soap

26
Q

Explain fusibility

A

The point at which a metal will melt or fuse with another metal

27
Q

Explain malleability

A

The ability of a metal to be worked into a new shape without breaking

28
Q

Explain elasticity

A

The ability of a material to return to its original shape after being pulled or pushed out of shape

29
Q

What 3 states does water occur in

A

Gas liquid and soilded

30
Q

Explain what an alloy is

A

An alloy is a metallic substance made by mixing two elements together one of which must be a metal

31
Q

Name 4 materials gaskets are made from

A

Insertion rubber tux earnie halite and Taylor rings

32
Q

Name 3 elements required for a fire to take place

A

Heat fuel oxygen

33
Q

What is sniffing

A

Is when you get a new cyclinder your turn it on for a slit second then turn it back off

34
Q

Explain what ductility is

A

Is the ability of a metal to be stretched without breaking

35
Q

Explain what tenacity is

A

Denote a materials ability to resist being stretched

36
Q

Maximum density explain

A

Is the temp where water will no longer expand or contract

37
Q

What is the purpose of acetone in relation to an acetylene bottle

A

The acetone acts like a sponge and soaks up the acetylene

38
Q

Name 4 types of thermal insulation used in plumbing

A

Glass fibre foam rubber ridge and foils

39
Q

What are the units for heat time and force in the a.i system

A

Julles,seconds and mutates

40
Q

Name 3 grades of mild steel

A

Medium grade heavy grade and schedule 40

41
Q

What are the units for heat time and force in the a.i system

A

Julles,seconds and mutates

42
Q

Name 3 grades of mild steel

A

Medium grade heavy grade and schedule 40

43
Q

Name 3 types of flames

A

Nutural flame oxidising flame and carburising flame

Phase 2 T1 (1 decks)

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