Trenchless Rehabilitation WIOG May 2017 Mark Hughes and Dave Neru Company Overview Pipe Rehabilitation Clean and Survey Coming Up Company Overview New Zealand Owned Group of Companies ID: 600714
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Slide1
Pipe Inspection and
Trenchless
RehabilitationWIOG May 2017
Mark Hughes and Dave NeruSlide2
Company Overview
Pipe Rehabilitation
Clean and Survey
Coming
Up
…Slide3
Company
Overview
New Zealand Owned Group of Companies
Operating for over 20 years
Over 200 staff
Technology specialists in:
Pipe line condition assessment and rehabilitation
SW and WW Networks operations, maintenance and management
Branches in Whangarei, Auckland, Hamilton, Blenheim and Christchurch
Slide4
Pipe
RehabilitationSlide5
Trenchless
Methods
Fold and Form
Spiral Plastic
Cured In Place (CIPP)
UV CIPP
Pipe Bursting
Directional Drilling
Micro Tunnelling
Pipe Jacking
Grouting Slide6
Renewal Comparison
Methods
Method
Diameter
Impacts
Application
Pipe
Material
Gravity
Pressure
Open Cut
I, S
Limited only by Pipe Material
PVC, PE, MSCL, DICL, GRP, Composites
Pipe Bursting
I, S
Up to PN25
PE,
Restrained Joint PVC
Slip Lining
L
Up to PN25
PE, PVC
Relining
(CIPP, Fold & Form, Spiral Wound)
M
CIPP up to PN12
PVC, Proprietary Reinforced Soft Liner & Resin Combinations
Close Fitting PE
(Compact Pipe, Swage, Sub-line, etc)
M
Up to PN12.5
PE
Legend:
I = Increased, S = Size for Size, L = Larger Reduction, M = Minimal ReductionSlide7
Identify Suitable Lining
Methods
LINING Suitability
FOLD & FORM
CIPP
CLOSE FIT SPIRAL WOUND
Reticulation sewer (150-300mm
dia
)
Yes
Yes
Yes
Branch sewer (>300mm dia.)
No
Yes
Yes
Maximum Installation length on 150mm diameter
135mtrs
250mtrs
100mtrs
Maximum Installation length on 225mm diameter
120mtrs
300mtrs
120mtrs
Maximum Installation length on 300mm diameter
110mtrs
500mtrs
110mtrs
Maximum Installation length on 375mm diameter
NA
500mtrs
120mtrs
Maximum Installation length on 450mm diameter
NA
400mtrs
110mtrs
Suitable to line Bends up to 90 degrees
Yes
Yes
No
Suitable to line sewers with multiple drop joints
Yes
Yes
No
Suitable to line sewers with multiple grade variations
Yes
Yes
No
Suitable to line sewers with running infiltration
Pre treatment required
Pre liner advisable
Yes
Reticulation sewer Bypass required
No
Yes
No
Branch sewer Bypass required
NA
Yes
High flows only
Liner water wall Thickness
4 to 7mm
4 to 27mm
1 to 3mmSlide8
Fold and
Form PVC
structural lining system to
ASTM1504
service life in excess of 50 years
uniform wall PVC pipe construction
no joints
installed in intimate contact to the pipe
no annular spaces behind the lini
ng
Slide9
Fold and
Form PVC – Cashmere Project
3 Line 150mm Lines
In the bush
Step gradient
Limited access
Behind Properties
Equipment Access
Manholes
US
DSSlide10
Fold and
Form PVC – Cashmere Project
Special Trolley System
Adjustment of crane system
Slide11
Fold and
Form PVC – Cashmere Project
Hangi on!
Steam use to heat coil
Slide12
Fold and
Form PVC – Cashmere Project
Feeding Time
Slide13
Fold and
Form PVC – Cashmere Project
Feeding Time
Slide14
Fold and
Form PVC – Cashmere Project
After a feed its time to expand!
Note slight over expansion of the
Fold and Form EX pipe
which confirms complete expansion & also mechanically ‘locks’ lining into place.Slide15
Fold and
Form PVC – Cashmere Project
All done – satisfied!
Slide16
Fold and
Form PVC – Cashmere Project
Summary of wins
Health and Safety
i
ssues minimised
Pull throughs - reduce set ups (movement of equipment)
Less disruption to home owners
Environmental friendly
Only reinstatement in manholes (end seals)
Cashmere Team won SICRT Environmental, Health and Safety and Quality AwardSlide17
Pipe
InspectionSlide18
Pipe Cleaning &
Inspection
Walkthrough and CCTV Asset Condition Assessment
History Of CCTV
Technology advancement
Personal profile
Asset condition assessment
Slide19
Pipe
Cleaning
Why we clean
Methods
Equipment
Slide20
Pipe
Cleaning
Root cutting
Hydro excavation
Slide21
Pipe
Cleaning
Recycling
technology
Slide22
Pipe
Inspection
Technology and Equipment
Pipe inspection equipment
Laser Profiling
Gas attack
Slide23
High Resolution
3
hours continuous recording
Over 2,000m line length
Only limited by tether (rope) availability
2x digital zoomSlide24
Pipe
Inspection
Walkthrough
Why
H&S
Waimakariri
tunnel
Slide25
Pipe
Inspection
Traditional CCTV equipment
Summary
Slide26
Questions?