Hyperbaric Shuttle Saint-Petersburg Metro
BESSAC Métro de TOULOUSE
workers are also called Compressed Air Workers. Most
of their interventions are inspection of Nuclear Power Plants (for 10
years pressure/leak tests), digging tunnels under pressure or
inspection & repair under pressure the TBM cutter heads, and
standard caisson works.
The concept of compressed air work must be
extended to compressed gas works since mix gases breathing mixtures have been used in
HYPERBARIE Sarl can
take care of :
- Design, construction follow up,
commissioning of compressed air work
plant and equipment, either for the account of the final user,
either for the TBM manufacturer, frequently in close cooperation
- Writing operation procedures and safety
manuals and obtaining approval by
local authorities when required.
- Training all personnel
involved (Site director, Hyperbaric operation superintendents,
Lock operators, compressed air workers (French Certificate Hyperbariste Mention D Classe I, II
by the French Ministry of Labor), Welders and arc-air operators
- Safety follow up of operations throughout
the works and adapt organization to unexpected situations (Polluted
area, heavy duty repairs under pressure, changes in procedures (oxygen
decompression) eventually change the air lock system for a new one...!
Since 1986, JCLP HYPERBARIE
had been involved with more than 75 construction sites with operations in compressed air, for
all French contractors who have built tunnels with compressed air, and
with most of European and North American TBM manufacturers.
- Metros : Lille (4 sites), Météor, Eole,
Rennes, Cairo (2 sites), Lisbon (3 sites), Madrid, Copenhagen, Strasbourg, Rouen, Sydney,
Lyon, St Petersburg...
- Road Tunnels : Théo
Westerschelde (The Netherlands), El Ahzar (Cairo), Socatop (Paris),
- Train Tunnels : Villejust,
KCRC 320 in Hong-Kong, Groene Hart TGV tunnel in the Netherlands, HK
- Sewage : Many sites
in Paris area, Toulouse, Bordeaux, Lyon, Swansea...
- Technical Tunnels : Berlin (3
- Nuclear Power Plants :
Writing the safety specifications for hyperbaric inspections of
Nuclear reactor buildings (National French Electricity Board - EDF).
The range of pressures are from 0.6 bar to
6.9 bar(g). The more frequent
pressure range is between 1.8 to 3 bar.
Between 4.5 and 6.9 bar, helium containing breathing mixtures and saturation
procedures have been specially developed and used at Westerschelde
Tunnels in The Netherlands June/September 2000 - refer to
publication, and for the
Metro of Saint Petersburg in 2002/2003 - (for 6 bar).
Special situation : Digging
under compressed air in kerosene contaminated soil (refer to