Presentation given by Eimear Gourley, Martin Murray and Ciaran Moohan, to the Northern Ireland branch on 9 October 2019 in Belfast

1. Keeping Wastewater Flowing
while managing major capital works for NI Water
Association for Project Management

2. CONTENTS
• Meet the Project Management Team
• Client Project Management
– What is the Base Maintenance List?
– Stakeholder Engagement
• Consultant Project Management
– Defining the Scope
– NEC Contract Management
• Contractor Project Management
– On site project delivery
– Efficiencies & Learning Outcomes

3. Meet the Project Management Team
Client PM
Eimear Gourley
Responsible for
NEC3 PSC Contract
Management
Consultant PM
Martin Murray
Responsible for
NEC3 Contract
Management
Contractor PM
Ciaran Moohan
Site Agent
Responsible for all
work on site
(including design)

4. Price Control
PC15
2018/2019
Year 4 of 6
Wastewater
Non-
Infrastructure
Capital Delivery
Capital investment in essential
wastewater infrastructure is critical to
ensure that public health is safeguarded,
economic growth is supported and the
environment is protected.

5. 1,029 Wastewater Treatment
Works recycling 340 million
litres of used water to the
environment each day
15,980 km of sewers below
ground collecting used water
Around 15,000 blockages in
the sewer network each year
due to inappropriate items
being put into the sewers

6. Creation of the Base Maintenance List
Asset
Performance
CSDD:
Operations
CAR:
Corporate
Asset
Register
Operational
Technical
Support
BUDI
H&S
Implications
Compliance
Asset Performance (AP)
retrieve initial list from
CAR: APRIL 2017
AP hold interviews with
Operational Field Managers
and Area Managers: MAY –
SEPTEMBER 2017
AP meet with NIW Capital
Delivery Team: OCTOBER
2017
Process / Timescale

7. Appointing the Consultant
IF180
Professional Services Support

8. Appointing the Contractor
IF100
Non-Infrastructure Major Works

9. Newry WwTW:
£2.6 Million Budget
2 Year Programme
• Aging infrastructure
• Increased population – including rationalising outlaying wastewater treatment works
• No effective screening process until recently – damaging the wastewater process
• Future plan to install more capable aeration blowers.
Why does Newry WwTW need Capital Base Maintenance Investment?

13. Clients Representative & NEC 3 Project Manager
• Newry WwTW
• Team
• Scoping “The List”
• Agreeing the List Scope with on site meetings between
NIW Site Stakeholders
• Contract Documents
• Review The Risk with Contractor and NIW Stakeholders
• Agree Tender price

14. Newry Wastewater Treatment Works (WwTW)
Newry WwTW
is located at
Greenbank
Industrial
Estate
63000 PE
Wastewater
Treatment
Plant
Sludge Import
Centre

15. Key Process Areas
•Screening
•Wastewater Processing
•Sludge Processing

16. Screening
Grit
Rags

17. Newry WwTW Process
1 - Grit Plant
2 - Inlet Screens
3- Primary Settlement Tanks (PST)
4 - Sequential Batch Reactor (SBR) -
Cyclical Activated Sludge System (CASS)
5 – Aeration Blowers
6 - Final Effluent
1
2
3
456

18. Wastewater Process

19. Newry WwTW Process
1 - Grit Plant
2 - Inlet Screens
3- Primary Settlement Tanks (PST)
4 - Sequential Batch Reactor (SBR) -
Cyclical Activated Sludge System (CASS)
5 – Blowers
6 - Final Effluent
1
2
3
456

20. Sludge Processing
PST and SBR Septic Tank & Other WwTW Thickened for Transport off site

21. Newry WwTW Process
7 – Import Sludge
Tank
8 – Blended Sludge
Tanks
9 - Thickened
Sludge Building
10 – Thickened
Sludge Tanks
10
9
8
7

22. McAdam Design
Client Representative and
NEC ECC Project Manager
Project Director
Senior Project Manager
Project Manager – Contract
Project Manager – Commissioning
Principle Designer
M&E Process Engineer
Site Supervisor s Civil and MEICA
Northern Ireland Water
Asset Delivery (AD)
AD Project Sponsor
AD Project Manager GRAHAM Construction
Principle Contractor
Contract Manager
Project Manager
Site Manager
Quantity Surveyor
Program Manager
NIW Project Stakeholders
Asset Management
Area Management
OPs M&E Technical Managers
Operation Manager
M&E Manager
H&S & Leaps
Environmental / Scientific
External
Stakeholders
Newry Mourne and
Down District Council
Newry FC
Focus School
NIEA
Trade Customers
General Public
Enisca
M&E Subcontractor
Project Manager
Site Manager
Project Team
Construction Project Team
Customers

23. The List
This the shopping list for Newry WwTW
2 Sludge Blending Tanks
2 Thickened Sludge Tanks
1 Import Tank
7 Blowers

24. Agreeing &
Understanding the List
Asset Delivery
Asset
Management
Team
Operations
Mechanical &
Electrical
Instrumentation
Control and
Automation
Operational and
Technical Support
Team
Scientific
(Process)
McAdam Project
Team
Graham
Construction

25. Sludge Tanks Issues with the sludge tanks
- Leaks happening constantly
- Leaks posed H&S risk to
operators if one happened
when they were working
around the tank
- Coming to end of their
currently life span
- Potential failure of the asset
reducing the capacity of the
WwTW

26. The Agreed List
Newry WwTW
2 Sludge Blending Tanks P
2 Thickened Sludge Tanks P
1 Import Sludge Tank P
7 Blowers ?
Replacement of all Sludge tanks requested to
be built out of concrete

27. The Detail (Aide Memorie)
Key Site Processes
(Risks)
Replace or
Refurbishment
Current Issues with
Equipment
Drawings, Operation
and Maintenance
Manuals
Talk with Day to Day
operators

28. CASS Basin Clean & Refurbishment instead of Replacement
of 7 No. Aeration Blowers

29. The Agreed List Newry WwTW
2 Sludge Blending Tanks P
2 Thickened Sludge Tanks P
1 Import Sludge Tank P
7 Blowers O
4 CASS Basin Cleans & Refurbishment /
Replacement Aeration Diffusors P
Scope is clarified with the Blowers still required but being
deferred until the following years Base Maintenance List
after the basins have been cleaned.

30. The Contracts
NEC 3 ECC - Option A
- Design and Construct Contract
- Fixed Price Activity Schedule
- 6 Week Tender phase to award

31. Risk Meeting = Complexity

32. Opportunities / Saving from Risk Meeting
• Concrete tank life span verses the life span of Glass
Lined Steel (Dromore WwTW)
– Asset Standards
– optioneering due to piling requirements
• Screening Machine (Poyntpass)
– Treating the effluent onsite
– Reducing the weight of grit and rags
being disposed of to landfill
– Separation of grit and rags which cost
have different landfill tariffs
– Environmentally friendly as less tankering
offsite is required

33. Tender Received & Agreed

34. Contract Awarded
• £2.6m Award May 2018
• Contract Start May 2018
• Completion Feb 2020
• 3 Design Workshops completed and Accepted End July 2018
• HAZCOM (Hazard Communications) Workshop Early July 2018

36. Newry FC
Local School
Roof Slab Precast Area
CASS Basin Set Up Area
Site Entry
280t Crane
Precast Beam Set up area
5 x Sludge Tanks

37. CASS Basins Upgrade
• 4 CASS Bains on the Newry WwTW Site
• Shut down 1 CASS basin at a time
• 31.5m diameter and 7.5m deep

38. CASS Basins –
Clean out

39. Team of operatives in CASS Basin drag material to hose of VAC Truck
A 13t Excavator loaded the Grit / Rag / Sludge into screener

40. 2 Lorry loads of Rags removed
11 Lorry Loads of Grit removed
218 Lorry Loads of Sludge
removed
The Screener saved approx.
500 lorry load from site

41. The Stainless-Steel Diffusers were removed
from CASS Basin and Refurbished prior to
replacement back into the CASS Basin.

42. CASS Basins would be filled to approx.
300mm above diffuser level with
Potable water and a pattern test was
carried out to confirm the installation of
all Diffusers meet requirements

43. Splitter Chamber
1st CASS Basin
Inlet and Primary
Settlement Tanks
Buffer Tank for
Temporary Storage
2nd, 3rd and 4th CASS
Basin
Tanker off Site

45. Sludge tanks to be cleaned out by Vac truck and Jet washing prior to demolition

46. Glass Lined Sludge Tanks were demolished
using 34t excavator with grab shears

47. Reuse existing pile foundation and base slab
Shutters Set and starter bars in place for first pour “ The Kicker”

48. Concrete Tanks were poured in 7.5m high cast in situ wall, 300mm thick.
Tank 1 and Tank 2 used Scaffolding for Access; Tank 3, 4 & 5 used MEWP and Scissor Lift

49. Articulated
Telescopic MEWP
Scissor Lift
Precast Roof
Slabs
Precast Roof
Slabs Placed
on Tank

50. Precast Beams cast on site then lifted into preformed openings within the walls of the tank – These beams
would then support the precast roof slabs
Precast Beams weigh up to 15t - Also shown in the picture is a Spreader Beam required to lift the Precast Beams

51. Sludge Tanks construction area with Concrete Pump Set up.
42m Concrete Pump required to deliver concrete to the 7.5m high walls on tank