PIETRO FIORENTINI HBC 975, Manual

Page: 60 / 156

60
HBC 975
EN
Use, maintenance and warning manual
SLAM-SHUT VALVE | COMMISSIONING | REV. 00
8.2 - PRELIMINARY PROCEDURES FOR COMMISSIONING
HAZARD!
Before commissioning the equipment, it must be ensured that any source of explosion has been eliminat -
ed if there is such a danger.
WARNING!
Before commissioning, you need to make sure that the characteristics of the equipment are suitable for
the conditions of use.
ATTENTION!
To protect the equipment from damage, the following operations must never be carried out:
• pressurisation through a valve located downstream of the equipment;
• depressurisation through a valve located upstream of the equipment.
Commissioning can be carried out using two different procedures:
Commissioning types
Injection of an
inert fluid
Pressurising the equipment by injecting an inert fluid (e.g. nitrogen) to avoid potentially explosive
mixtures for services with combustible gases.
WARNING!
During pressurisation, always check that the equipment has no leaks.
Direct injection
Direct injection of gas into pipes, keeping the gas velocity in the pipes as low as possible (maximum
permitted value of 5 m/s).
Tab. 8.37.