These instructions da not apply to 38kV/1 10kV/220kV cabie fav 0: bate 09-08 Note 3: All materials ducts, marker tapes/strips, duct surrounds, mandrets and brushes must be ESB approve
Trang 1ENVIRONMENTAL
Appendix 2B
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274111211 1Â, 424 147 427/21/2 22Á2 Y
_ Standard Specification for ESB MV/LV
- Networks Ducting (Minimum Standards)
Note 1:ESb Networks reserves the right not to accept ducting which does nat conform to these standards and dimensions KG
Note 2: Refer to ESB Networks for Specific job Specification These instructions da not apply to 38kV/1 10kV/220kV cabie fav 0: bate 09-08
Note 3: All materials (ducts, marker tapes/strips, duct surrounds, mandrets and brushes) must be ESB approved materials pproved:
1) MINIMUM depths below finished ground level © Minimum Standard Clearances to Other Services
450mm
In established footways
600mm
in new housing estate carriageways &
footways and alt grassed areas
750mm
All Non-Housing Estate carriageways , forestry|
farmland & bogland
Clearance to Normal Services
High Pressure Pipes
Clearance to: Large Pipelines
1 600mm
® To achieve these clearances see sections 3D and 3E below
© Clearances less than the above at pinch points and crossings requires placement of additional mechanical protection (concrete slab/brick) and agreement of ESB
© ESB ducts must never be laid over other services on parallel runs, except with the written prior agreement of the other utilities and ESB
¢ Other Services must never be laid directly over ESB ducts on parallel
runs
Depth is measured to top of duct
Max depth is 1m except at:
* service crossings where 1.5m is allowed
¢ short rail and road crossings where up to 2.5m is alowed
Trench Installation Sequence
„rẻ me =
⁄ 0 —~ _—
Warning:
Always agree trench route with ESB before excavation commences excavate benchio fequred dimensions Layin & compacta bedding layer of Lay ducts and horizontal spacer For multiple clreults ensure ducts are Unstable, insecure & paar access routes wil not he accepted byESS Engure laose material and protreding approved material tea min thickness an 50mm bedding layer spaced as par Section 3 below with a
stones are removed of50rnm oras otherwise specified maintaining specifted cleerances min of {50mm duct spacing
10
300rim max fer yellow marker tape
200mm/
275mm
Layin and compact a layer of Install ESB approved yellow R
Lay in and compact a layer of Insaili ESB approved red marker approved backfill maintaining marker tape Tha max depth na See anos Coney
approved backill toa depth of strip an top of approved compacted amax depth of 300mm to the for the marker tape ls 300mm Specification
200/276ram above bedding layer backfill surface rors finished ground level
Minimum Duct Spacings for ESB Ducts Minimum Duct Spacings for ESB Ducts
75mm minimum duct spacing 150mm duct spacing required for
for up to two ducts In any layer more than 2 ducts in any layer
Pu
RECEIVED
Duct crossovers not allowed at any point along route Duct crossovers not allowed at any paint along route
4 app 994
6 APR eet
LONGFORD COUNTY COUNCIL
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Specification
StandardS})
(3C) Minimum Duct Spacings for ESB Ducts
Minimum duct to trench wall clearances and minimum bedding depths PL& athersC)
J
soon Q}
to trench edge clearance Is 100mm and minimun bedding depth
is 50mm
ry
(3D) Minimum Duct Spacings for ESB Daicts, °
£
Plas Achievement of Horizontal Duct Spacing View Horizontal Spacers
horizontal duct spacing
_—_ during construction
cn Satna NB Use 300mm or 600mm
=—_—— horizontal spacers to
or achieve horizontal
Oo spacing from other
utilities as appropriate
Als if
Timber/Brick Customised 75mm or 150mm 300mm 180mm # 75mm Spacer Plastic Horizontal Spacer
Use 75mm or“”mm
temnorary L wick
or plastic spauc 25
appropriate to establish
spacers for ESB trenching
Achievement of Vertical Duct Spacing
STEP 1 Step2 Step3
Lay in Ducts and Layinandcompact Check depth of approved
horizontal spacer approved backfillto backfill above Ist duct
Lay in 50mm 200/275mm depth fayer and lay in 2nd layer
bedding Layer depending on spacing of ducts and spacers on
in 3A/3B above top of sand layer
NB Vertical Duct Spacers are nat allowed anywhere as they create point
loading of ducts Refer to 3A/3B for spacings in specific situations
Installation of: Special ESB marked Yellow Marker Tape
and Special ESB marked Red Marker Strip in Carriageways
ESB yellow marker tape and red marker strip is to be used on all carrlageways and on grassed areas for both LV & MV cables
‡
300mm Maximum for ESB yellow marker tape
fe £ 75mm minimum above duct for ESB red
| marker strip
ES8 yeliow marker tape and red marker strip
“ widths must always be wider than ducts beneath
1 450mm | ESB yellow marker tape and ESB red marker
— —™ strip must never be laid directly on top of ducts
Never lay other utility marker tape or strip over ESB ducts Never lay ESB marker tape or strip over other utility pipes
(4B) Installation of Special ESB marked Yellow Marker Tape
in all Footways ESB approved yellow marker
tape to be used on all Footways La
300mm Maximum for ESB yellow marker tape
ESB yellow marker tape widtt must always be
wider than width of ducts beneath
325 ESB Yetlow marker tape must never be latd
i = my directly on top of ducts
mn _,, Never lay other utility marker tape or strip over ESB ducts Never lay ESB marker tape or strip over other utility pipes
nd material
== Grading Curve fr Good San Surround for MV and LY cb
The thermal resistivity of the
duct surround material must
be maximum1.0krnAwatt
@0% moisture content ruse Only ESB approved = Faiee unwashed sand graded to BS882 standard or equivalent ESB approved material is acceptable rs
† Parle steam)
Duct surround material must be weil compacted around ducts without damaging the ducts
NB: Pea qravel and foam concrete are unacceptable ESB duct surround materials
Specification for Installation of Ducts
at sharp route bends
ESB Approved Long Radius Bend (minimum Duct Bend Radius 1.2 Metres) Bends less than 1.2 m radius are
unacceptable
400mm 10N Minimum strength concrete on
inside of bend to withstand cable pulling forces
i rapa Cross Section at bend
s 400mm Showing concrete support”
\ o- * all around the duct and
increased trench width
Wider trench to accomodate h 400mm of concrete on inside of bend
J<—— Normal Trench Width
Obligation of Duct Installer to minimise the number and severity of duct bends
The duct installer must minimise the number and severity of preformed bends
in ground with obstructions and other utility service crossings by opening | %
ground 12m ahead of backfllled duct, wherever practical to da so This safety
obligation, which may require use of steel plating, allows the duct installer to
pick the least bendy duct route through utility crossings and obstructions
Otherwise, numerous sharp unrecorded duct route deviations wil! be present
making cable Installation considerably more difficult and tess safe for the cable
installer
Obstructions Backfilled Duct
®
tua ae
Specification for Installation of Ducts
at Gentle sweep bend positions
6m
length
straight
Ripe
Always use a series of 11, 22
or 45° bends to
provide a smooth joint
interface where the trench route curves around in a large
sweep Never bend ducts around a large sweep trench Concrete support
as for item 6A
Standard for Brushing, Mandrelling Roping and En apping of MV/LV Ducts
Ail Ducts must
“Thoroughly bruel Roped using 12mm polyproplane rope wilh cettifed sale breaking lead af 1.8 tons — all ropa jolnis la be pmaperiy spliced and PVG taped aver Appraved Supplier Silver Strand Bunclana Donegal, ph (074} 9382503 - 300m drum tengths available
to minimise splicingleol! handing
«Sealed using endcaps against grit and water getling into them
‘NB: Replace mancrals once mandrel wear inditatera or graaves are war dows Repiace brushes onca brush diameter falls Smm below dimensions {a tabla below + Approved enticaps, bolh disposable and reusable types, are available fram suppliers of approved ESA ducting
» Approved ESA Mandrel and brush suppliers : Brandon Agencies, Rathtew, Ca Wicklow: Phone 0404 20800 (Brushes & Mandrels) [5 Varian, Greenhitis trdustriat Estate, Walkinstown, Dublin 12 Phone: 61-4301 150 (Brushes Only) Clydesdale UK Phone 086 172 6665 (rushes & Mandre|s)
Tynagh Network Systems, Loughrea, Co Galway, Phone: 09% 642206 (Brustes & Mandrels) 125mm uPVCU Duct Size 160mm uPVCU Duct Size
‘Sharp Inner end of duct protrudes at joint due to bending stiffness Never bend ducts as sharp ends
will protrude atjolnts as
indstrated; result serious vipping/damage to cable
‘and mandrellad to prove diiste against debris fexcessive deflection
Tam | mem | Boom | em |
«man = = cae cal =
Mandret T—” Brush Mandret ~~ Brush
code: 9317547 Code: 6783254 Code: 9317549 Code: 8783251
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pig ot and Socket Du u
Case 1 Dust run with all bends at one ond
— ® No
RS, Casract direction as cable drum will be
located at hendy end
Bendy no matier which side route
Gase 2 (a) is looked at
No best direction
‘to lay ducts
Case 2(b} More bonds at ane end than the other
Case 3 Trenching routes longer than 500m
Joint Bay ——D
‘Treat any route as a sesiae of fengths botwoen joint bays at say 500m Intervals and lay ducting as for Case 1 & 2 above Ifen large sloping raute
tay as shown mm
-
by ESB Networks
+ Lightweight flexible corrugated twinwall ducting is not
acceptable to ESB irrespective of manufacturer
¢ Use only solid wall high impact resistance ESB approved PVC red ducting t to IS 370
colour standard and ESB specification 16113 (3.8mm minimum wall thickness)
Discoloured or unidentified ducting not acceptable All duct materia! must be approved
« Current approved Dust and duct bend manufacturers are: Lynplast (bend fittings only)
Radius Systems, Wavin, Quality Plastics, MFP Plastics, Cork Plastics, Emtelle
Mallet or Hammer — end of duct from damage Timber block to protect
‘ully jointed Duct Mar!
All ducts to be securely jointed by tapping against timber board
on each duct until the black depth insertion mark is reached
Damaged Siin Siip
Duct Section Coupler Coupler
mix xm
and free from sharp edges
Use only approved slip couplers from approved SS insection 9
© Cut out damaged section of duct and ensure all cut surfaces are square
® Slide, position and centre the repair coupiers on the centering marks
= ; T =
Piain End
All ducts to be permanently sealed at both ends of duct run
Ducts to be temporarily sealed during installation using endcaps provided with each bale
> omg - ¿
ESB Code 125mm: 9317583 ESB Code 189mm: 9317566
Endcap
See pg 213 of MV/LV Manual
Suitably tong stecltimber beam to suppert exposed cable Sacure beam with pags or short pins
Shore upvstabillse tench against faling in
‘on top of cable and damaging or puncturing R
‘Support cable with plastic rope or webs ‘ard chain holsts at 0.5m intervals appsox Take le weight, do not over tension iheslngstoiss
sig
-Overslgave the cable with red al pipes and cables to prov idanitcaton and provide impact resistance
03m minimum standard clearance
‘of 100mm minimum but Use proteclign as in, felavent section of ESB manual
See pg 42 of MVAV Manual
New pipe/Sewer
protect it fi 9
debris/acciental contact etc
75mm Appro:
n Remove ESB CABLE backfiling/
B RECEIVED
7 APR 2021
RD COUNTY C
0.3m minimum standard clearance or 100mm minimum but use protection
as in Table 7 of £58 manual
New pipe/Sewer
See pg 42 of MV/LV Manual
Trench AFTER improper backfiling and Ramming
#apesgie dstiaoln rasuting na shavyi atthe trench walls end risk of cable ar di failure Tater
KH AFTER carefull backfiting and Ramrming
fs all round the cable fo be hand tamped
a lo be wal supported hy frm bod of sand the cable, No compaction machine!
action
Để hy over cableidue Tor Môi minimur distance Result : Very litle cable datlection and shearing at edges of trench
See pg 44 of LV/MV Manuat
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MVI/LV Trench Dimensions & Duct Clearances for 125mm Ducting Layouts
ud | 2 | ĩ = | ae | Trench Widths for 1& 2 Rows of Ducts
| > o ° L °
m 0 we P\ a) mạ te 0 mm = tạ = „ O44 xem [2 ow [2 |Ð 45 6
ven |325 [525 [875 |1150 [1425 [1700
| T ii T Minimum Trench & Duct Depths for 4 Horlzontal Row of Ducts
a a a
ea c ae ệ -_ e = Trench Sane [femame—|aeeioner |For
100 100 | D 100 5 wo} o 100 150 0 wot) 300 150 150 150 say | eo eee 625 925 925
tusroea|600 |450, 750 750
2 10 ‘0 0 10 mg Minimum Trench & Ouct Depths for 2 Horizontal Row of Ducts
Toatand [haw towing ring ening few [Fama
= =} ven Sang CỬ [rocpata [Roadster | Foreseytocs
Footpath, oad Thang |B todond
3 sĩ IavEnly os dves outing Scuume
mere (975 [825 1125 |1125
1050 [900 [1200 |1200, recy |600 |450 750 750
(20B) Bridge Crossings: Restricted Footpath Designs
Cast Stee! Marker Plate Code 3227172
‘cat osh with fotpath anface at intetvels cf 2-4 1 The design must be agreed with the bridge authority Position in footpath is
Ateratively toed wo tte wot estar laterals
a \ | Galvanised steal preferred,
ee eee 3E "Mam ren al Icke 2 Minimum cover over ducts on footpath 100mm
(winiu 20.sewton concrete tobe placed between enon cenit bed ed above ducts eStimuher Tape ends atbeh ence bage pats cs 2227174 be Be
3 Where duct cover is > 300mm, marker strip & surface marker plates can be used
seh
onepposte— p> Gì G)
footpath z Ne a 4, Red uPVC ducting is not suitable for cable run external to bridges
pantera 5 Where possible galvanised steel/stainless steel piping should be used, all
joints must be free of weld burrs on inside Alternatively heavy duty 10mm wall thickness black HDPE material with cast steel marker plates attached must
be used to permanently warn of presence of electric cable
see pg, 167 of $ee pg 167 of LV/MV manuat LV/MV manuaL
River/Stream Crossings: Standard Where 21B = er © fe andard ere
Burial/Drilling is possible Burial/D fe ot possible
Malerfow Maier
ae Marker Fost orPote Stub ‘or Pole Stub
jarete Se with Sign with Sign
ra Sub
=
= =
| Depth of burial below bottom of rivar or stream to be agrued with relevant authority (if applicable) €3 œ ol | Tnstalfition on base of river or stream te be agreed with relevant authority (if applicable)
2ifrorva red ccs aed by weneig rbe eee MCDM Sate cơ creeevepmemt tò oS PFenvf wall steel pipe to be used free of wold beadelswar Minimum Grnm seee! wall thickness to be used, Encase in and b> provide machaical protection Sea any fies t prevent concrat enaring ac gay aA ‘hoon (15 after 7 days) concrete for corrosion protection, minimum 40mm surrauas
feted ecg prac deal an cer post on both alex af tha crosting~ fn od clad HEPE dc (eneone 22 & 2.0 0 MVEN manual) cor use sub pola minum 2 | => = gc MẤ: loi &uanlng Jan ESB marker post on both sides of the crossing - ESB code 8327355 or use stub pole minimum 20m above dgn 20355
TỶ ẻ rẽ iN earn Glu ra eEthulle a smooth connection using rubber coupler between crossing pipe size and ESB standard duct as the steel pipe
ara pulled in (sae sactlon 2.0.4 of MVAV manval for guidance) See pg SE a <— (CC fbi usually diffar from the standard ESE ducting, Alternatively run ESB ducting right through the steel ple
6.1F erossing a tHdal area, foreshoro leerca wal be required LV/MV niente Sa &'Oprpssing tidal area foreshore ficenca will be required iu } 168 a
Lv/MV manual
<< x
=i Fy So
2 andard Over Baseme arpa
22A) Minimum Standard Over Basements/Carpa-ks
ESB Surface Marker Plate
Mù lepth of duct is 400mm,
Minimum thickness from bottom of duct to underside of slab is 200mm
ESB suface marker plates are to be placed at approximate intervals of 3 metres on the top and bottom surfaces of the slab,
Marker plates are to be cast level with the surface and screwad down to to avoid lift off {ESB code: 3227172)
@@Q@
Standard Duct Separation & Spacing —=—
For ESB Ducts concrete surround - same strength for entira stab
Structural Concrete ESB Surface Marker Plate
Representation
Reinforced Concrete Slab Comer Detail
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Standard Specification for ESB MV/LV Networks Ducting (Minimum Standards) com.| Pages of 6
MV/LV Trench Dimensions & Duct Clearances for 160mm Ducting
e ox | ụ SE | e os | e as | ‘Minimum Trench Widths for 1 & 2 Rows of Ducts
| | ia | LH † H TS ế|1< -|2875|357Z|4Z |3 [8
100 100 100 1 100 100 160 180 100 100 150 180 150, 10) ¬
1m” l360 |595 |980 |1290 |1600 |1910
` = ey my sa
_— Minimum Treech & Duct Depths for 2 Horizontal Row af Ducts
| T if T em: Trưng — [WeiEuip [BIHE — ene, [rates |BMSERev|Pmb, Freer [rene
‘ EQ) EQ:O sử || [| : 2075 2!) ED=0-02|!'EO=0-0-0:!! Be Ỹ i 075 i 7 2015 m=mEe ti tenn me ee owing ven
a 10 150 ‘Minimum Trench & Duct Qepths for 2 Horizontal Row of Ducts
( ye O=0 = a Am reat |Sdmme Ảedmdbs - |RmwOuee” |rzeenvads
=} 2} Footy od Bsn aes taney tower |smem
ee {1045 |895 1195 |1195
1120 [970 |1270 |31270 eae (600 [450 750 750
MV Cable End Pole - Marker Strip/Tape
Offset duct to tine up with pole edge to facilitate cable pulling Cover cable between duct and pole with both
Never install ducting right up to pole base with long radius bend at- Marker Strip and Warning Tape
tached
+ 2.5m" >| Both marker strip & warming tape to be used between duct & pole ,
cablebsosortedl roondsø bat tdensnot ghtpr farther ring Dcdling Take precautions to prevent pole toppling BH
See pg 122 of LW/MV manual See pg 211 of LV/MV manual
Sand
(24D) LV Cable End Pole Position - Elevation —————
Ducting Eor LV Mains and LV service Cable
(24E) LV Cable End Pole Position - Plan View
(42185 to 25/16 concantric) Duetng for LV Mains and Ì.V Service Cable
{4x185 to 25/16 Concentrie)
duct thorougly sealed concrete
325mm
‘Trench Warning Tape Ì |
450m
4 Cut channel into pole concrete foundation to allow for the vertical section of the duct bend Standard 126mm to lie agalnst the pole
PVG Ducting 450mm radius band 20W Concrete: - -
ESB code 9917609
“3 Backfill and support bend with 20N concrete mix as per elevation view
LV Ducting for Non Domestie Conniections
Duct laid to Mains Cable
Stop excavation ‘Temporary and permanent -
J metre short of i :
= 5 pees Z “\\ External dijor RECEIVED
ag 07 APR 2021
Ñ vant ea : 125mm Duct + Reducing bend 125/20 ESB Code 8347800 LGNGFORD COUNTY COUNCIL
General Note for alt Cases: |
1: Excavation within i metre of existing cables must only be carrled out by hand and
with agreement of the local ESB Networks office, This Is to prevent damage to existing cables Internal External location option „
and consequent safety risk for workers location {not pam Kom "¬
2: Liaise with ESB Networks to confirm location of all cables option caer aces tat
Ail Excavation work to be in accordance with HSA Cade of Practice
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Standard Specification for ESB MV/LV Networks Ducting (Minimum Standards) con
Duct laid to Mini Pillar Location
The new duct If no vault in front of minipillar, the limit of
must only be put excavation must be agreed with ESB Networks | 1
into the vault with personnel locally External Wall
an ESB Networks Temporary and permanent reinstatement \
person present to Local Authorit y Standard \ External door
Ifthe meter box is external then the cable is to follow
Route 1
if the meter box is internal then the cable is to follow
i_—_»
48/2:)9)65)45I1728E-1sivbis1422721T5NGI2)2 (U01 22220 - :
600 for †oolpath being inslalled Internal External location option
750 for ductin roadway location {not >2m from extemal
Existing Grade dawn to 600 125 Duct + Red an option au a ee
mm Duet + Reducing ben: cian, Code of practice for Cables ESB Cdde 03 7B NNING SECTION Customer Interface “)
F TECCIVED
87 APR 2021
Specification for Standard Non-Scheme Gomestic DA Ea ng Service to an Outdoor Meter Cabinet (low-voltage scrvice not exceeding SC.)
from an Overhead Network
The Customer must ensure that:
« The Seivice pole and tte complete run of the duct are both within the site boundary ESB‘s Engineering.Officer will confirm the service pole position and the ducting route on-site
« _ An outdoor meter cabinet, to ES| Standard 12-3 (1986), is installed in a suitable location, see overleaf ‘Tails from customers Buse
¢ An ESB approved “hockey stick” Is installed at the meter cabinet position Board
¢ Red ESB approved 50mm seivice ducting is installed at a minimum depth of 600mm between"
the hockey ‘stick position and the service pole Yellow ESB cable warming fape must be Installed at a maximun depth of 300mm below ground level atong the fult length of the duct
e _ Comudated Ducting of any colour is not permitted
« The.duct shail be as-straight as'possitilé and free of sham bends
H + A ponfinious and sirong 1ũmm poiypronyiene draw rope is installed-in the duct It must be AILESB cibles to
- free of knots and secured at hott ends of the duct, “te reset cabhiet at
I 3otoiq left hang side _—
E 41 tis essential that the ESB cable.does not come into contact with the cavity insulation Allow a
projection of 25mm of the hockey Stick into the base of the cabinet ‘Hockey Stick projects
Ễ 2 There niust be a rrininiim clearance of 100mm between the service duct and other services - 228m mobie
£ on the house-holder’s property Lin
E 3 ESB will provide black UV lightresistant ducting from below the finished ground level to the top iin fo
4 Forpoles more than 50m away from the cabinet, 125mm red ESB approved ducting shall be max;
used with an ESB approved service vault at the junction of tiie duct and the hockey stick ESB Approved Hockey from
Stick with 90 dezree outside
Connection will only be made after ai! ahove requirements are meet tang +.G.L
‘Duct end sealed with plastic pped adhesive tape
Finished Ground ievel (F.G.L}
Red ESB approved 50mm Solid wall MDPE duct @ 600mm min depth below (F.G_L.) go
Doc, DIIS-180803-BNR Rev 8, February 2005 Stores Code: 9806508
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new
ENVIRONMENTAL
Appendix 2C 7
PLANNING SECTION RECEIVED
07 APR 2021
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ae - ve