Design Drawings 132kV underground cables · Design Drawings 132kV underground cables 4.8.3A...

March 2017Application Reference EN020001

Do

cum

ent

Hinkley Point C Connection Project

Design Drawings132kV underground cables

4.8.3A

Regulation 5(2)(o) of the Infrastructure Planning(Applications: Prescribed Forms and Procedure)Regulations 2009

Cab

le

C

ircuit 1

Ca

ble C

ircu

it 2

A A

BB

Ha

ul R

oad

Varies

Cable Circuit 1Cable Circuit 2

7m - Temporary Access Road

Varies Varies

Ground Level

Ground Level

Well compacted thermally

suitable indigenous backfill

3mm stone dust

Va

ries

132kV XLPE cables

(cross section may vary)

Varies

90

0 m

in

Service duct

Warning Tape

Protective Tile

90

0 m

in

132kV XLPE cable

Well compacted thermally suitable indigenous backfill

Ground Level

7m Haul Road

Topsoil Stockpile

Construction Swathe Typically 60m (See Note 7)

Temp.

drain

Subsoil

Stockpile

Ca

ble

C

ircu

it 1

Ca

ble

C

ircu

it 2

Topsoil Stockpile

Temp.

drain

Subsoil

Stockpile

Varies

NG INVESTMENT No. APPLICATION No.

NG DRAWING No. SCALE

ISSUE

TITLE:

ISSUE DATE COMMENTS CHK'D APP'DDRAWN

Key

MMD DRAWING No.

COPYRIGHT NOT TO BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF THE NATIONAL GRID ELECTRICITY TRANSMISSION Plc

Notes

MMD-322069-E-DR-WPD-XX-0600

A

As Shown

132kV UNDERGROUND

CABLE INSTALLATION

TYPICAL DIRECT BURIED DETAILS

& CONSTRUCTION SWATHE

GENERAL ARRANGEMENT

PINS SHEET 20 OF 70

13/NG/0240

SHT 1 OF 1

20897 EN020001

CAD

A1

NATIONAL GRID (HINKLEY POINT C CONNECTION PROJECT) ORDER

DESIGN DRAWINGS

(REGULATION 5(2)(o))

SHEET 20 OF 70

Section A-A

Typical Duct Cross Section

1:50

Typical Plan View of Direct Buried Cables

1:200

See Detail 1

Section B-B

Typical Section View of Direct Buried Cables

(Service ducts omitted for clarity)

1:50

Typical Section Haul Road Swathe

1:100

See Detail 1

Detail 1

(See Note 5)

1:10

1. All dimensions are in millimetres unless otherwise

stated.

2. Dimensional information should not be obtained

from this drawing (do not scale).

3. Dimensions and depths are indicative only and will

vary according to installation and site conditions.

4. Proposed general arrangement based on WPD

requirements.

5. Trench arrangement and dimensions to be

confirmed during detail design stages.

6. Minimum depth to top of cables to be 900mm in

general installation, except in agricultural land

where the minimum is 1000mm.

7. Construction swathe width may vary according to

site conditions.

Proposed direct buried cable alignment

Haul road

10m20m0

1:200

1:100

0 10m5m

2.5m5m0

1:50

1:10

0 1m0.5m

Stone dust

Well compacted thermally suitable

indigenous backfill

A

May 2014For DCO Submission

JAH LD JB

Exis

ting R

oad

3mm stone dust or concrete trench section 3mm stone dust trench section

90

0

min

132kV XLPE cable

132kV XLPE cable in duct

132kV XLPE cable

3mm stone dust trench section

900

min

Ground Level

90

0

min

90

0

min

.

Ha

ul R

oa

d

Ca

ble

C

ircu

it 1

Ca

ble

C

ircu

it 2

BB

Ha

ul R

oad

Hedgerow to be temporarily removedExisting Hedgerow

Hedgerow to be temporarily removedExisting Hedgerow

Existing Road

A A

Varies

Cable Circuit 1

Cable Circuit 2

Existing RoadExisting Road

7m haul road

Varies Varies

Va

rie

s

Varies

uPVC duct

(Outer diameter may vary)



3mm stone dust

or concrete

132kV XLPE cables


Service duct

90

0 m

in

Existing Road Level

Pavement reinstatement

Sub-base

Warning Tape

Protective Tile



ISSUE

TITLE:


Notes

Key

MMD DRAWING No.



A

As Shown

132kV UNDERGROUND

CABLE INSTALLATION

TYPICAL GENERAL ARRANGEMENT AT

OPEN CUT ROAD CROSSINGS

PINS SHEET 21 OF 70

13/NG/0241

SHT 1 OF 1

20897 EN020001

CAD

A1

Section B-B

Typical Section View of Open Cut Road Crossing

(Service duct omitted for clarity)

1:50

Typical Plan View of Open Cut Road Crossing

1:200


stated.






requirements.



6. Bentonite may be required within ducts to

potentially improve cable rating, subject to

agreement with relevant stakeholders.


Existing road

Proposed ducted cable alignment

Existing hedgerow

Section A-A


(1:50)


DESIGN DRAWINGS


SHEET 21 OF 70

Detail 1

(See Note 5)

1:10

See Detail 1

Existing hedgerow to be temporarily

removed If required

10m 20m0

1:200

2.5m 5m0

1:50

1:10

0 1m0.5m

Reinforced Concrete or stone dust

Stone dust


indigenous backfill

Pavement reinstatement

Sub-base

Haul road

Haul Road

A


JAH LD JB

Top of Ditch

Cable Circuit 2

7m Haul Road

Cable Circuit 1

Varies VariesVaries

Bottom of Ditch

Culvert

Reinforced concrete surround trench section 3mm Stone dust trench section3mm Stone dust trench section

132kV XLPE cable


132kV XLPE cable

Existing ditch

Varies1000 1000

Ground Level

Va

ries

(See Note 8)

Haul Road

Cable Circuit 1

Cable Circuit 2

Culvert

Haul Road

AA

B

B

Ground Level

uPVC ducts (Outer

diameter may vary)



Reinforced concrete

surround

132kV XLPE cables


Va

rie

s

(S

ee

n

ote

8

)

Varies

Service duct

90

0 M

in

im

um

Reinforcement

Va

rie

s

Warning Tape

Protective Tile



ISSUE

TITLE:


Notes

Key

MMD DRAWING No.



A

As Shown

132kV UNDERGROUND

CABLE INSTALLATION

TYPICAL GENERAL ARRANGEMENT

AT DITCH CROSSING

PINS SHEET 22 OF 70

13/NG/0242

SHT 1 OF 1

20897 EN020001

CAD

A1

Section B-B


(Reinforcement omitted for clarity)

1:50

Section A-A

Typical Section View of Ditch Crossing (Cable)

(Service ducts and reinforcement omitted for clarity)

1:50

Typical Plan View of Ditch Crossing

1:200



Haul road

Water


stated.

2. Dimensional information should not be obtained from

this drawing (do not scale).

3. Dimensions are indicative only and will vary

according to installation and site conditions.

4. Ditch crossing method to be defined depending on

specific characteristics and installation conditions.

Trench arrangements and dimensions to be

confirmed during detail design stage.

5. Ditch crossing construction operation will not impinge

water flow.


requirements. Arrangement and dimensions to be


7. At certain locations ducts may be filled with

bentonite.

8. Depth to be agreed with the relevant stakeholders.


DESIGN DRAWINGS


SHEET 22 OF 70

See Detail 1

Detail 1

(see Note 4)

1:10

10m20m0

1:200

2.5m5m0

1:50

1:10

0 1m0.5m

Reinforced Concrete

Stone dust


indigenous backfill

A


JAH LD JB

Ground Level

Utility

90

0

min

90

0

min

132 kV XLPE cable

Va

rie

s

Stone dust or reinforced concrete trench section

Cable section to be direct buried

or ducted, subject to utility depth,

construction methodology and

agreement with utility provider .

3mm stone dust trench section3mm stone dust trench section

Ha

ul R

oa

d

Cab

le

C

ircu

it 1

Cab

le

C

rcu

it 2

A A

BB

UTL UTL UTL UTL UTL UTL UTL UTL UTL UTL UTL

Ground Level

90

0

min

90

0

min

132 kV XLPE cable

Utility

Va

rie

s

Ground Level

Cable Circuit 2

7m Haul Road

Cable Circuit 1

Varies

Varie

s

Varies Varies

Utility

Ground Level

Cable Circuit 2

7m Haul Road

Cable Circuit 1

Varies

Va

rie

s

Va

rie

s

Va

rie

s

Varies Varies

Utility



ISSUE

TITLE:


Notes

Key

MMD DRAWING No.



A

As Shown

132kV UNDERGROUND

CABLE INSTALLATION

TYPICAL SERVICES CROSSING DETAIL

& GENERAL ARRANGEMENT

PINS SHEET 23 OF 70

13/NG/0243

SHT 1 of 1

20897 EN020001

CAD

A1

Section B-B

Typical Utility Crossings - Below Existing Services


1:50

Typical Plan View of Utility Crossing

1:200


stated.






requirements.



6. Minimum depth to top of cable to be 900mm in

general installation, except in agricultural land

where the minimum is 1000mm.

7. Where possible, cable crossing at existing

services should be perpendicular.

8. Spacing between utility and cable is subject to

agreement with the relevant provider/asset owner

at individual locations.


DESIGN DRAWINGS


SHEET 23 OF 70

Section B-B

Typical Utility Crossings - Above Existing Services


1:50

Section A-A

Typical Utility Crossings - Above Existing Services

(1:50)

Section A-A

Typical Utility Crossings - Below Existing Services

1:50

See Detail 1

Sheet 20 of 70

10m20m0

1:200

2.5m5m0

1:50


Haul road

Existing UtilityUTL

Proposed direct buried or ducted

cable alignment

Reinforced Concrete or stone dust

Stone Dust


indigenous backfill

A


JAH LD JB

Varies

uPVC duct

(Outer diameter may vary)

3mm stone dust or

concrete

132kV XLPE cable

(Overall cable diameter &

cross section may vary)

10

00 m

in.

Protective tile

Service duct

Warning tapes

Ground Level

300

30

0

Removable concrete slab

(Marker slabs 150mm

min. thickness)


(Marker slabs 150mm

min. thickness)

30

0

Clean Sand

Clean Sand

GPSS pipes 400mm dia.

(See note 8)


suitable indigenous backfill or

similar approved by pipeline

operator.

Well compacted

thermally suitable

indigenous backfill

10

00

m

in

.

4000

20

00

m

in

.

15°

m

a

x.

Ground Level

250 min. 250 min.

2000

GPSS



Protection tile

132kV XLPE Cable


Ha

ul R

oad

Hau

l R

oad

GPSS

Cable C

ircuit 1

Cable C

ircuit 2

A A

BB

Cable Circuit 1Cable Circuit 2

7m Haul Road

Approx. 10000 - 12000

GPSS



ISSUE

TITLE:


Notes

Key

MMD DRAWING No.



A

As shown

132kV UNDERGROUND

CABLE INSTALLATION

TYPICAL GENERAL ARRANGMENT

AT GPSS (GOVERNMENT PIPELINE

AND STORAGE SYSTEM) CROSSING

PINS SHEET 24 OF 70

13/NG/0239

SHT 1 OF 1

20897 EN020001

CAD

A1

Section B - B

Typical Section View of GPSS Crossing


1:20

Typical Plan View of GPSS Crossing

1:200


stated.





4. General arrangement based on WPD standard

CA6A/3 and GPSS Standard relating to the

installation of underground cables.



6. Bentonite may be required within ducts to

potentially improve cable rating, subject to

agreement with relevant stakeholders.

7. The cable sizes to be confirmed at a later stage.

8. GPSS pipe dimensions are assumed only.

Detail 1

(See Note 5)

1:10

Section A - A


1:50

See Detail 1


DESIGN DRAWINGS


SHEET 24 OF 70

1m2m0

1:20

1:10

0 1m0.5m

2.5m5m0

1:50

10m 20m0

1:200



Reinforced concrete

Stone dust


indigenous backfill

Clean sand

Haul Road

A


JAH LD JB

Joint bay

C

a

b

l

e

C

i

r

c

u

i

t

2

C

a

b

l

e

C

i

r

c

u

i

t

1

Service duct

chamber

Access gate

Link box pit

Bonding cables

Bonding cables

A

A

Link box pit

V

a

r

i

e

s

Service duct

chamber

Joint bay

H

a

u

l

R

o

a

d

Service Duct

Service Duct

90

0 m

in

.

Va

rie

s



Warning Tape

Protective tile

3mm stone

dust

Service duct

Ground Level

1750 750 1750

7000

75

20002000

Typical cable trench profile view

Ground Level

Warning

Tape

Protective tile

Joint bay

base slab

SumpSump

900

mm

m

in

Link box pit

Bonding cables

Service duct chamber

Joint bay

Service Duct



ISSUE

TITLE:


Notes

Key

MMD DRAWING No.



A

As Shown

132kV UNDERGROUND

CABLE INSTALLATION

TYPICAL GENERAL ARRANGEMENT OF

JOINT BAY WITH LINK BOX PIT

PINS SHEET 25 OF 70

13/NG/0215

SHT 1 OF 1

20897 EN020001

CAD

A1


stated.

2. Do not scale any items of information from this

drawing.

3. Existing ground profiles shown are for general

indication only.

4. Arrangement shown for indicative purpose only.

Dimensions and design may vary depending on

site and installation conditions.

5. Link boxes to be installed below ground. Length of

the bonding leads which connects to the link boxes

must not exceed 8m as per WPD standard

CA6A/3.

6. Joint separation to be determined dependant on

onsite conditions.

Typical Plan View of Joint Bay

1:100

Section A - A

Typical Joint Bay Cross Section

1:25

AA


DESIGN DRAWINGS


SHEET 25 OF 70

Typical Section View of Joint Bay

1:50

2.5m 5m0

1:50

1:25

0 2.5m1.250m

1:100

0 10m5m

See Detail 1

Detail 1

Typical Plan View of Joint Bay Connections

1:50

Haul road


Concrete

Stone dust


indigenous backfill

A


JAH LD JB

C

a

b

l

e

C

i

r

c

u

i

t

2

C

a

b

l

e

C

i

r

c

u

i

t

1

H

a

u

l

R

o

a

d

See Note 4

Link box pit


Link box pit


DESCRIPTION SIZE WEIGHT

TRACTOR 5.2m LONG x 2.54m WIDE x 3m HIGH 8 TONNES

TRAILER 5.9m LONG x 4.4m WIDE x 2.5m HIGH 5 TONNES

TRAILER WITH CABLE DRUM AND CABLE 5.9m LONG x 4.4m WIDE x 5m (APPROX) HIGH 40 TONNES

CABLE GUIDE 5m LONG x 3m WIDE x 3m (APPROX) HIGH 2.5 TONNES

20m Temporary Hardstanding

7m

15m TURNING CIRCLE FOR TRACTOR

DRUM / TRAILER DETAILS

Te

mp

ora

ry

Ha

rd

sta

nd

in

g

Tractor

Drum

Trailer

Cable guide

Direction of cable release

Cable Pulling Arrangement

NTS


A

As Shown

132kV UNDERGROUND

CABLE INSTALLATION

TYPICAL GENERAL ARRANGEMENT OF

CABLE PULLING LOCATION

PINS SHEET 26 OF 70

13/NG/0216

SHT 1 OF 1

20897 EN020001

CAD

A1

Typical Cable Pulling Layout

1:200

1. Do not scale any items of information from this

drawing.

2. Hardstanding shall be capable of supporting

equipment/mobile plant.

3. Arrangement shown for indicative purposes only,

dimensions and design may vary depending on site

and installation conditions.

4. Indicative location of trailer mounted cable drum.



ISSUE

TITLE:


Notes

MMD DRAWING No.


Key


DESIGN DRAWINGS


SHEET 26 OF 70


Haul road

10m 20m0

1:200

A


JAH LD JB

Office T

raffic R

oute

Construction Traffic

One Way System

Heras Fence

Laydown

Area

Wheel Wash

Point

To/From

Haul Road

12x Portakabins

30x Car Parking Bays

20m x 20m

Security

Gate House

View A

Elevation on View A

Fuel Tank

Storage

~85m

~75m

Spoil

5x Minibus Parking Bays

To/From Haul Road

or Main Road

2.4m

T

o T

op

of F

ence

1.5m

T

o T

op of

S

oil B

und

Waste S

torage A

reas

3m Wide Soil Bund

3m Wide Soil Bund

Pe

de

stria

n A

cce

ss R

ou

te



ISSUE

TITLE:


Notes

Key

MMD DRAWING No.


MMD-322069-E-DR-400UG-XX-0800

B

NTS

TYPICAL 132kV COMPOUND -

GENERAL ARRANGEMENT

PINS SHEET 27 of 70

13/NG/0212

SHT 1 of 3

20897 EN020001

CAD

A1


DESIGN DRAWINGS


SHEET 27 OF 70

A

July 2013Section 42 Submission

JAH

Drawing to be read in conjunction with:

· 13/NG/0212 (Sheet 28 of 70) - Typical 132kV

Satellite Compound - General Arrangement.


Compound Including Test Equipment - General

Arrangement.

1) Dimensions and layout arrangement shown is

indicative only. Design will vary according to the

construction contractors requirements, the available

area and the specific site constraints.

2) Portacabins will be single storey but may be raised to

take account of potential flood risk at certain locations.

Details to be agreed with relevant stakeholders.

3) Soil bund will be designed with suitable gaps/ drainage

pipes to allow water flow in flood conditions. Details to

be agreed with relevant stakeholders.

Pedestrian Access

Soil Bund

Spoil

B


JAH LD JB

12 x Portakabins

Security

Gate

House

Laydown Area

20m x 10m

2 x Minibus

Parking Bays

View A

Fuel

Tank

Storage

Elevation on View A

~5

5m

~55m

Wheel

Wash Point


One Way System

Heras Fence

To/From

Haul Road

Spoil

14 x Car

Parking Bays

To/From Haul Road

or Main Road

2.4

m

T

o T

op

o

f F

en

ce

1.5

m

T

o T

op

o

f

S

oil B

un

d

Waste Storage

Areas

Pedestrian A

ccess R

oute

3m Wide Soil Bund

3m Wide Soil Bund



ISSUE

TITLE:


Notes

Key

MMD DRAWING No.



A

As Shown

TYPICAL 132kV SATELLITE COMPOUND

- GENERAL ARRANGEMENT

PINS SHEET 28 of 70

13/NG/0212

SHT 2 of 3

20897 EN020001

CAD

A1


13/NG/0212 (Sheet 27 of 70) - Typical 132kV

Compound - General Arrangement.

13/NG/0212 (Sheet 29 of 70) - Typical 132kV

Compound Including Test Equipment - General

Arrangement.


DESIGN DRAWINGS


SHEET 28 OF 70











Pedestrian Access

Soil Bund

Spoil

A


JAH LD JB

Office T

raffic R

oute


One Way System

Heras Fence

Laydown

Area

Wheel

Wash Point

To/From

Haul Road

12x Portakabins

30x Car Parking Bays

5x Minibus

Parking Bays

20m x 20m

Security

Gate House

View A

Elevation on View A

~85m

~85m

Spoil

2x HV Cabling

Test Equipment

Fuel Tank

Storage

To/From Haul Road

or Main Road

2.4m

T

o T

op

of F

ence

1.5m

T

o T

op of

S

oil B

und

3m Wide Soil Bund

Waste S

torage A

reas

3m Wide Soil Bund

Pe

de

stria

n A

cce

ss R

ou

te



ISSUE

TITLE:


Notes

Key

MMD DRAWING No.


MMD-322069-E-DR-400UG-XX-0802

A

NTS

TYPICAL 132kV COMPOUND

INCLUDING TEST EQUIPMENT -

GENERAL ARRANGEMENT

PINS SHEET 29 of 70

13/NG/0212

SHT 3 of 3

20897 EN020001

CAD

A1


DESIGN DRAWINGS


SHEET 29 OF 70



Compound - General Arrangement.


Satellite Compound - General Arrangement.











Pedestrian Access

Soil Bund

Spoil

A


JAH LD JB

Design Drawings 132kV underground cables · Design Drawings 132kV underground cables 4.8.3A...

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