This document summarizes a presentation about gas pipelines and plants in Venice and the surrounding lagoon. It discusses new leak detection technology using laser absorption spectroscopy that can detect leaks from 150-200 meters away. It also discusses the digitization of the gas network through the installation of smart meters and digital monitoring points. Finally, it provides details on the gas pipelines located within Venice's historic center and in the lagoon, which require specialized equipment and techniques to install and maintain due to the environment.

1. Pipelines and plants
in Venice
and the lagoon
Investor Day Site Visit
November 6, 2018

2. 2 /
Speaker
PAOLO BACCHETTA

3. 3 /
Agenda

4. 4 /
Agenda
Meters New leak
detection
technology
Network
digitization
Gas pipelines
in Venice’s
historical centre
Pipelines in
the Lagoon

5. 5 /
Isola delle Tresse
AERIAL VIEW
5 /
Insular withdrawal system:
TRESSE
▪ Withdrawal, Reduction and Metering Plant (IPRM)
▪ Smart Meters

6. 6 /6 /
Isola delle Tresse
VIEW FROM THE SEA
Insular withdrawal system:
TRESSE

7. 7 /7 /
Insular withdrawal system:
TRESSE
FILTERS AND
EXCHANGERS
SECTION

8. 8 /8 /
Insular withdrawal system:
TRESSE
GAS
PRESSURE
REDUCTION
SECTION
SAFETY
VALVES
SECTION

9. 9 /9 /
Insular withdrawal system:
TRESSE
GAS METERING
AND ODORISING
SECTION

10. 10 /
Agenda
New leak
detection
technology
Network
digitization
Gas pipelines
in Venice’s
historical centre
Pipelines in
the Lagoon
Isola
delle Tresse

11. 11 /
Smart meters
CUSTOMER TYPE
Large Users
(industrial customers)
METER
CLASS
≥ G40
CUSTOMER TYPE
Large Users
(industrial customers)
METER
CLASS
G10, G16, G25
Mass Market
(residential customers)
≤ G6
LEGACY
METERS
INTEGRATED
SMART
METERS
Only
classes ≥
G65
CONVERSION
DEVICES
CENTRAL ACQUISITION
SYSTEM
SAC

12. 12 /
Smart meters
Ultrasonic Thermomassic
ThermomassicDiaphragm Type
Diaphragm Type
DYNAMIC METERS STATIC METERS
LARGEUSERSMASSMARKET

13. 13 /
Agenda
Meters Network
digitization
Gas pipelines
in Venice’s
historical centre
Pipelines in
the Lagoon
Isola
delle Tresse

14. 14 /
Innovative Laser Technology
Main advantages:
▪ Laser absorption spectroscopy technology
▪ Sensitive not only to methane (CH4) but also to
ethane (C4H6) (can identify biogenic natural gas for
example coming from sewers or pools)
▪ Much higher sensitivity (parts per billion = µg/kg)
1,000 times higher than current laser systems (ppm:
parts per million = mg/kg)
▪ Dispersion can be detected even at about 150-200 m
depending on wind speed
▪ The vehicle can travel at the same speed as other
vehicles without obstructing traffic

15. 15 /
NEW GAS DETECTION
TRADITIONAL GAS DETECTION
New leak detection technology
Comparison of traditional and innovative technology (volume investigated in green)
TRADITIONAL
GAS
DETECTION
NEW
GAS
DETECTION

16. 16 /
Innovative Laser Technology – Vehicle-based and
pedestrian search

17. 17 /
Innovative Laser Technology – Vehicle-based search
Vehicle equipment
ASPIRATION
SYSTEM
INERTIAL GPS
GPS
ANTENNA
ANEMOMETER
17 /

18. 18 /
Innovative Laser Technology–
Layout

19. 19 /
Innovative Laser Technology – Pedestrian search

20. 20 /
Agenda
Meters New leak
detection
technology
Gas pipelines
in Venice’s
historical centre
Pipelines in
the Lagoon
Isola
delle Tresse

21. 21 /
Via Vian - MESTRE
Network digitization
CURRENT NETWORK DIGITALISED NETWORK
FINAL
REDUCTION
UNIT
(Monitoring point of
digital parameter
such as. Q, P, T, …)
100% SMART
METERS
TERMINAL
POINT
(pressure
monitoring)
21 /

22. 22 /
Via Vian – Mestre System
22 /
Via Vian - MESTRE

23. 23 /
Via Vian - MESTRE
Via Vian – Mestre System
23 /

24. 24 /
2019 Digital Final Reduction Unit: outline of new single
cabinet systems
G.R.F. Digitale
Armadio VTR
Contatore
Elettrico
Quadro
Elettrico
Conver-
titore
Alimentatori/
Trasformatori
24 /

25. 25 /
Agenda
Meters New leak
detection
technology
Network
digitization
Pipelines in
the Lagoon
Isola
delle Tresse

26. 26 /26 /
Gas pipelines in Venice
Ponte degli Scalzi
REMOVAL OF
MARBLE

27. 27 /27 /
Ponte degli Scalzi
Gas pipelines in Venice

28. 28 /
Ponte degli Scalzi
28 /
Gas pipelines in Venice

29. 29 /
Ponte degli Scalzi
PIPE REPLACEMENT
29 /
Gas pipelines in Venice

30. 30 /30 /
Gas pipelines in Venice
Riva degli Schiavoni
ANCHOR BLOCKS
(TO AVOID FLOATING)

31. 31 /31 /
Gas pipelines in Venice
Piazza San Marco
HANDLING

32. 32 /
Agenda
Meters New leak
detection
technology
Network
digitization
Gas pipelines
in Venice’s
historical centre
Isola
delle Tresse

33. 33 /33 /
The lagoon pipeline
12 bar
PIPELINES
5 bar
PIPELINES

34. 34 /34 /
LAYING
SPECIFIC
EQUIPMENT
The lagoon pipeline

35. 35 /
LAYING
SPECIFIC
EQUIPMENT
The lagoon pipeline
35 /

36. 36 /
LAYING
SPECIFIC
EQUIPMENT
The lagoon pipeline
36 /

37. 37 /37 /
VALVES
COUPLINGS
“Octopus“
shut-off valve
Gas piping signal
"Coupling"
Signalling valves and couplings

38. 38 /
FORMWORK
FOR WORK IN
THE LAGOON
38 /
Works in the lagoon

39. 39 /39 /
Works in the lagoon
MAINTENANCE

40. 40 /40 /
Tomorrow visit path

41. 41 /
Agenda
Q&A