Biotech, chemical, petrochemical & pharmaceutical - HiQ® Specialty ...

HiQ ® specialty gas program – Biotech, chemical, petrochemical & pharmaceutical
Central gas supply
Detection and alarms
• The need of detection is assessed. Regard should be taken to future
requirements concerning types of gas and suitable flexibility
to avoid unnecessary costs at a later stage.
• The possibility of an auto-stop if a leak is indicated. This can be
achieved using detection equipment.
• The need of an alarm to an operating centre and/or an evacuation
alarm within a certain area is defined.
Linde has well-trained assembly teams with vast experience of specialty
gas installations. Each team has a supervisor who is responsible
for the completion of the project and at the same time functions
as an on-site contact person.
Pipe and components are delivered sealed and well packed to the
assembly area.
To maintain the purity requirements and to produce a tight gas system,
automatic computer controlled pipe welding equipment is
used. All welding is carried out using internal and external shieldgas
purging, which results in a clean and bright joints.
Pressure testing according to applicable standards is carried out
and a protocol is established.
A complete system is purged clean and analyzed to determine the
humidity and oxygen content.
To guarantee that a system is tight we carry out a helium leak detection
test. A certificate of tightness is drawn up. Before a gas
supply system can be regarded as completed and is handed over for
start-up it is documented.
A complete set of documentation comprises:
– Layout documents (shows the entire supply systems design and
positions in respective buildings).
– System specifications including equipment lists.
– Technical information covering all components.
– Spare part lists.
– Pressure testing protocols.
– Analysis certificates where applicable.
– Tightness certificates where applicable.
– Operating and servicing instructions.