Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

SLA Barrier Pipe > SLA Barrier Pipe Introduction > Flashcards

SLA Barrier Pipe Introduction Flashcards

1
Q

Barrier pipe is commonly used on greenfield sites; true or false?

A

False, barrier pipe is used on brownfield sites with contaminated land.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is barrier pipe used for?

A

Safe transportation of drinking water through contaminated ground.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Why is regular MDPE not used in contaminated land?

A

There is a risk of ground pollutants, in particular hydrocarbons, getting into the drinking water.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What 2 materials make up SLA barrier pipe?

A

A PE inner and outer core, with an aluminium middle layer.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

SLA barrier pipe should be used near cemeteries, flood plains and agricultural land; true or false?

A

True, all are at risk of introducing contaminants into drinking water.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What process identifies if ground contaminants are present?

A

Soil analysis (during planning process).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

180mm SLA barrier pipe should be used in trunk mains applications; true or false?

A

True, 180mm+ is typically used for trunk mains.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What size SLA barrer pipe should be used for mains supply to large house building developments?

A

90 - 180mm SLA barrier pipe.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What advantage does having an inner black PE layer give SLA barrier pipe?

A

Easier to identify if the aluminium is compromised if the pipe is damaged.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Name the four sizes of SLA barrier pipe with diameters under 100mm.

A

25mm, 32mm, 63mm and 90mm.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Why is wrapping required for electrofusion fittings or butt fusion welding?

A

It provides protection from contaminants at the joint.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

SLA barrier pipe is available in coils for which diameters?

A

25mm, 32mm, 63mm, 90mm, 110mm, 125mm, 160mm & 180mm.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Sticks of SLA barrier pipe are not available for which pipe diameters?

A

25mm & 32mm.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the name of the most popular barrier pipe in the UK market, and who manufacturers it?

A

Protecta-Line from GPS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the difference between Type A & Type B barrier pipe?

A

Type B barrier pipe outside diameter is the true OD of the pipe. Type A outside diameter is larger than the nominal stated outside diameter (e.g. 25mm SLA barrier pipe is actually 26.2mm - 27.4mm OD)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

SLA barrier pipe is manufactured from PE80; true or false?

A

False, SLA barrier pipe is manufactured from PE100.

17
Q

What are the main advantages of PE100 over PE80?

A

PE100 is a tougher material and is less likely to damage when handling and installing.

18
Q

What does the brown stripe indicate?

A

That the pipe is multi-layered.

19
Q

There are 5 types of connections for SLA barrier pipe. Name these connections and their available sizes.

A

Pushfit Fittings (25 - 32mm); Gunmetal Compression Fittings (25 - 63mm); Hydraulic Compression Fittings (63 - 180mm); Electrofusion Fittings (25 - 630mm); Butt Fusion Welding (25 - 630mm).

20
Q

Which connection types for SLA barrier pipe do not require wrapping?

A

Pushfit Fittings; Gunmetal Compression Fittings; Hydraulic Compression Fittings

21
Q

Only fittings supplied by Westwood Pipelines can be used with SLA barrier pipe; true or false?

A

True, only fittings supplied by Westwood Pipelines should be used with SLA barrier pipe.

22
Q

PE80 and PE100 are two major pipeline products. By what other name or refernce are they sometimes refered too?

A

PE80 - MDPE (Medium Density Polyethylene) ; PE100 - HPPE (High Performance Polyethylene)

23
Q

What is the WIS approval for barrier pipe?

A

WIS 4-32-19

24
Q

SLA barrier pipe is available in 16 diameters. Name the sizes mainly used by self lay contractors.

A

90mm, 110mm, 125mm, 160mm, 180mm

25
Q

Why can’t regular MDPE fittings be used with SLA barrier pipe?

A

The pipe outside diameter is larger than MDPE fittings, so they won’t fit. They will also likely introduce contaminants into the water supply.

26
Q

Why is SLA barrier pipe dark blue, and competitors’ products are light blue?

A

SLA is Manufactured from PE100, whereas competitor’s products are manufactured from PE80.

27
Q

SLA barrier pipe is available in 16 diameters. Name the sizes mainly used by groundworkers or house builders.

A

25mm, 32mm, 63mm.

28
Q

If the soil condition is unknown, regular MDPE should be used; true or false?

A

False, if contamination is unknown SLA barrier pipe should be used. Better safe than sorry!

29
Q

Name the only UK manufacturer and product that has the same wide range of diamater as SLA barrier pipe.

A

GPS Protecta-Line

30
Q

The Water Industry Standard, WIS 4-32-19, referes to Barrier Pipe Systems and requires the pipe and fittings to be tested and approved together; true or false?

A

True

31
Q

With regards to SLA barrier pipe; what do the letters SLA stand for?

A

Safety Line Aluminium

SLA Barrier Pipe (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions