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Borehole Introduction Flashcards

(61 cards)

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1
Q

What is the shortest length of casing we can offer?

A

1 metre

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2
Q

What is the longest length of casing we can offer?

A

6 metres

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3
Q

What does WRAS stand for?

A

Water Regulations Approval Scheme

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4
Q

Give three main reasons why we drill for water.

A

Cost saving using a natural source; A water supply for rural areas; Good for the environment

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5
Q

What determines the size of screen to be used?

A

Ground conditions of the soil

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6
Q

What is “Bentonite” used for?

A

Act as a seal against surface contamination

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7
Q

What determines the size of the pipe to be used?

A

Amount of water required

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8
Q

Is casing used at the top or the bottom of the a borehole?

A

Top

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9
Q

What other material is used for borehole?

A

Black Polyethylene

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10
Q

What is the approximate depth we can go to for PVC borehole?

A

Approx 200 metres

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11
Q

In the UK, what is the average water use per person per day?

A

150 litres

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12
Q

Why is the PVC borehole system coloured blue?

A

To easily distinguish casing pipes from other applications

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13
Q

What advantages do JDP have over competitors in the borehole systems market?

A

Locations, stock throughout the UK, sister company that produces pipe, products that customer needs for installation.

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14
Q

True or false, Borehole customers also buy mdpe water pipe and access chambers?

A

true

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15
Q

JDP offer a one-stop shop for standard products, true or false?

A

true

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16
Q

What are the two main markets for borehole systems?

A

Water extraction and ground monitoring.

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17
Q

Ground monitoring is one of the main markets, what is the other?

A

water extraction

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18
Q

Water extraction is one of the main markets, what is the other?

A

ground monitoring

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19
Q

There are opportunities in other markets, what are the other markets?

A

Landfill Gas Extraction and Landfill Leachate Extraction

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20
Q

What type of pipe does the water extraction market use?

A

PVC

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21
Q

What type of pipe does the ground monitoring market use?

A

HDPE with some PVC

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22
Q

What is the water extraction market driven by?

A

The fluctuation in weather and drought conditions, the high cost of mains water.

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23
Q

What market is driven by the fluctuation of the weather?

A

water extraction

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24
Q

What market is driven by the high cost of mains water?

A

water extraction

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25
What is the ground monitoring market driven by?
construction and the need to monitor the stability of the ground, or the gases and chemicals within the ground.
26
Where is it especially important to check the gases and chemicals in the ground?
brownfield developments
27
What is important when cleaning brownfield developments?
that the gases and chemicals within the ground have been monitored.
28
What market is driven by construction?
ground monitoring
29
What market is driven by monitoring the stability of the ground?
ground monitoring
30
Who are the main users of borehole systems?
specialised drilling companies.
31
Who are the other users of borehole systems?
civil engineers
32
What is used for the installation of borehole systems?
specialised drilling rigs
33
What are specialised drilling rigs used for?
the installation of borehole systems
34
What is a borehole?
a hole or a shaft used for extracting product from the ground.
35
What can a borehole be known as?
a hole or a shaft
36
What are the two main customer catagories?
water drillers and multi-disciplined drillers
37
What do water drillers drill for?
just water
38
What do multi-disciplined drillers drill for?
multiple applications
39
Who else will drillers install boreholes for other than industrial/commmerical users?
domestic households
40
Who else will drillers install boreholes for other than domestic households?
industrial/commmerical users?
41
Who are turning to boreholes to make huge savings?
domestic households
42
Who are looking to source their own water supply?
the manufacturing industry and food processing
43
What PVC applications are being used in large projects?
water wells, groundwater control, groundwater monitoring, water remediation. Geothermal drilling, railway track monitoring, geotechnical instrumentation, enbankment stabilisation.
44
What HDPE applications are being used in large projects?
landfill sites, ground remediation, brownfield sites, geothermal, contaminated ground water monitoring, contaminated soil monitoring, landfill gas recovery, landfill leachate extraction.
45
What are the two types of pipe that borehole is made from?
PVC and HDPE
46
What are the range of diameters in PVC pipe?
26mm-165mm
47
What are the standard lengths of PVC pipe?
1m and 3m
48
Why do customers prefer 3m PVC pipe?
because it fits in their vans/trailers easily
49
What are the two types of PVC pipes?
solid pipe and slotted pipe
50
What are the different slot sizes in PVC pipe?
0.3mm, 0.5mm, 1.0mm, 2.0mm, 3.0mm
51
What is the slot size of the pipe dependent on?
soil conditions
52
What are the different diameters in HDPE pipe?
40mm and 63mm.
53
What are the standard lengths of HDPE pipe?
1m and 3m.
54
What diameter of HDPE pipe can be purchased in 2m lengths?
63mm
55
What slot size does a 40mm diameter pipe have?
0.75mm
56
What slot size does a 63mm diameter pipe have?
1.0mm
57
What approval is needed for water extraction?
WRAS
58
What regulation is coming into force in 2016?
Regulation 31
59
Who is regulation 31 specified by?
DWI (Drinking Water Inspectorate)
60
What are the five key questions you need to ask the customer?
material, pipe diameter, length, thread type, slot size
61
What are the accessories that can be required by the customer?
threaded caps and plugs, push on caps, caps, rubber bungs, sand, gravel

Borehole Systems (1 decks)

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