Fig 6-6 GVU-OD
The isolated room Figure 6-7 is gas-tight and follows these standards:
1 All electrical equipment follows the standards in the ATEX Directives (Equipment for
potentially explosive atmospheres)
2 An ATEX approved airlock of sufficient dimensions for one person is installed at the
entrance of the GVU room.
3 Large ATEX approved fans with redundancy are installed. These fans keep sufficient
negative pressure in the GVU room. The air in the GVU room and the air in the pipes are
replaced 30 times per hour.
4 The gas pipes between the GVU room and the engine have double walls.
5 The maximum GVU room capacity for pressurized gas must be calculated.
6 The maximum GVU room pressure resistance must be calculated.
7 The ventilation system of the GVU-OD operates independently from all other ventilation
systems.
For the GVU-OD, the control panel is installed outside of it.
X92DF
AA00-8014-00AAA-042A-A
Operation Manual Gas valve unit and external gas supply system
Winterthur Gas & Diesel Ltd.
- 280 - Issue 002 2020-08
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