1. Introduction Conduits, general Contact to SGB Conduit Plan Grounding Place to mount Pedestal Measurem. A/1 Issue 1.3 SGB LEAK PREVENTION SYSTEM SGB GmbH Hofstrasse 10 DE-57076 Siegen GERMANY Tel: + 49 (0)271-48964-0 Fax: + 49 (0)271-48964-6 Site-prep Manual Issue: 1.3; 2010-09-01

2. Introduction Conduits, general Contact to SGB Conduit Plan Grounding Place to mount Pedestal Measurem. A/2 Issue 1.3 Introduction This document is an overview about the necessary steps is an overview about the necessary equipment is based on the information laid down in GDS – the different sections are referenced is a summary with regard to the site preparation to install a leak detection system Designed for: Architects PMC’s Main Contractors

3. Introduction Conduits, general Contact to SGB Conduit Plan Grounding Place to mount Pedestal Measurem. A/3 Issue 1.3 Place to mount the SGB Vacuum Leak Detection Cabinet See also: 08.1118 and 08.1133 Close to the discharge area (Filling point) 1 Meter Distance to the corbings or bollards Attention: In case if there is not the possibility to mount the Leak Detector closed to the filling (e.g. no space to protect the box), please ask the PMC Technical Manager for advice

4. Introduction Conduits, general Contact to SGB Conduit Plan Grounding Place to mount Pedestal Measurem. A/4 Issue 1.3 Place to mount the SGB Vacuum Leak Detection Cabinet DO‘s: - Place closed to the filling-point DONT‘s: - „too-early“ mounting of the box Due to risks of damages during site civil works - Wrong conduits are used Entry seals to avoid migration of vapors cannot be installed

5. Introduction Conduits, general Contact to SGB Conduit Plan Grounding Place to mount Pedestal Measurem. A/5 Issue 1.3 Pedestal for the Leak Detection Cabinet There a pedestal has to be built: 1.Horizontal measurements of the concrete pedestal 2.Measurements of the protection box 3.Space for the conduits (opening of the protection box) RED AREA is the space to terminate the conduits 600 mm 1100 mm 300 mm 800 mm 700 mm 180 mm

6. Introduction Conduits, general Contact to SGB Conduit Plan Grounding Place to mount Pedestal Measurem. A/6 Issue 1.3 Pedestal for the Leak Detection Cabinet 4.Vertical measurements of the concrete pedestal > 200> 300 Termination over a LEAK TIGHT AREA! (independent of the place where the Leak Detector is mounted)

7. Introduction Conduits, general Contact to SGB Conduit Plan Grounding Place to mount Pedestal Measurem. A/7 Issue 1.3 Conduits, general Conduits are required for: 1.Electrical wiring between Protection Box and Indicating Unit (Shop) (for information: 4 wires + Ground) Electrical wiring between Protection Box and VISY INPUT (Fafnir) (for information: 2 wires per sensor in one cable e.g. 4 sensors means one cable with 8 wires) 2.The tubing between the monitored interstitial space of the pressure lines and the manifold in the Protection Box CAUTION: If there are more than 3 tubes to routed through one conduit, install a second conduit to the same manhole. 3.The Tubing for the exhaust line An Animation for these Conduits follows next page! See also: 08.1118 and 08.1114 + 08.1116

8. Introduction Conduits, general Contact to SGB Conduit Plan Grounding Place to mount Pedestal Measurem. A/8 Issue 1.3 Conduits, general Requirements for the conduits: 1.Routed with a continuous fall to the manhole 2.Buried at a depth that the tubes are Frost protected (~ 60 cm) 3.The distance between manhole and Leak Detector should not exceed 50 m 4.Routed from every manhole to the place where the Leak Detector is mounted (concrete pedestal) 5.D=75 mm (or 100 mm) for electrical wiring 6.D=32 mm, for Tubing, recommendation: UPP 7.Use specified Conduit Entry Boot to enter the manhole See also: 08.1123

9. Introduction Conduits, general Contact to SGB Conduit Plan Grounding Place to mount Pedestal Measurem. A/9 Issue 1.3 Conduit Plan Conduit exhaust, 32 mm Conduit pressure lines, 32 mm Conduit electrical, 75 or 100 mm

10. Introduction Conduits, general Contact to SGB Conduit Plan Grounding Place to mount Pedestal Measurem. A/10 Issue 1.3 Conduit Plan Conduit exhaust, 32 mm Conduit pressure lines, 32 mm Conduit electrical, 75 or 100 mm

11. Introduction Conduits, general Contact to SGB Conduit Plan Grounding Place to mount Pedestal Measurem. A/11 Issue 1.3 Routing of the Conduits Place where the concrete pedestal for the leak detector will be built Conduits for the leak detection system

12. Introduction Conduits, general Contact to SGB Conduit Plan Grounding Place to mount Pedestal Measurem. A/12 Issue 1.3 Grounding of the box See also: 08.1118 and 08.1137 Prepare the grounding, that also the protection box can be grounded Grounding point in the box Existing grounding plan

13. Introduction Conduits, general Contact to SGB Conduit Plan Grounding Place to mount Pedestal Measurem. A/13 Issue 1.3 If you need more information Martin Huecking+ 49 (0)271-48964-40 (Technical Director)+ 49 (0)160-964 63 229 huecking@sgb.de Jost Berg+ 49 (0)271-48964-14 (President)berg@sgb.de Hans-Gerd Jersemann+ 49 (0)271-48964-44 (Sales Engineer)jersemann@sgb.de or if you have proposals to optimize our documentation or if you need assistance for a site lay-out Please contact: