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Our systems are based
on the following major items: |
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1. |
sample take-off probes
for installation on process lines |
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2. |
sample pre-conditioning
units (temperature and pressure control) |
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3. |
fast-loop systems
and pumping facilities, engineered in order to provide correct hold-up
time depending |
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on analysis cycle
time |
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4. |
sample conditioning
systems, properly designed in order to provide sample to analyzers
at suitable flow, |
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temperature , pressure
and filtration values |
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5. |
PLC based safety control
system |
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6. |
sample recovery system
to collect spent samples and pump back to process lines |
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7. |
analyzer shelters
fully equipped with: |
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- Heating Ventilating
and Air Conditioning System |
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- Power distribution
systems |
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- Lightning |
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- Grounding |
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- Safety devices and
Gas Monitoring Systems |
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- Utilities headers |
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- on-line analyzers
such as: Gaschromatographs, Flash Point, Freeze Point, Pour Point,
Viscosity, Vapour |
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pressure, TOC, Moisture,
Density, Chemical composition, Physical properties, NIR, FTIR, Sulphur
etc. |
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TECHNICAL FEATURES |
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ATEC analysis system
is based on the following main features: |
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1. |
Shelter structure and
covering |
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The structure upon
which the walls roof and the floorboard are mounted forms a single
frame and will be |
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sized in order to
permit hoisting, transport and positioning, without any damage or
permanent |
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deformation. |
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Walls and roofs are
sandwich type with inside/outside panels in painted galvanized steel
plate or AISI |
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304/316 steel plate.
Thermal insulation is guaranteed by 50 mm. fire retardant expanded
polyurethan |
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sheets (density 40
Kg/mc and thermal conductivity 0,40 Kcal/h mq. °C). |
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The roof is properly
designed and constructed to support the combined weight of two men
without |
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causing any permanent
deformation. The roof design includes also detachable side overhangs
for |
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sampling systems protection
and lifting eyebolts hooked to the base frame. |
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The floor made in
chequered steel plate, includes drainage well. |
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Shelter are equipped
with opening outwards doors (main/emergency) with unbreaking window.
All locks, |
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handles, hings and
pins are based on weather resistant materials. |
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2. |
Painting |
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Where applicable,
painting is performed according to our procedure: |
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- one hand of WASHPRIMER
epoxy paint type |
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- two hands of FINISHING
epoxy paint type. |
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Paint characteristics: |
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- acid resistant |
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- corrosive resistant |
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- fungus resistant |
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Thickness of the dry
paint film 70-80 microns as minimun. |
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3. |
Electrical |
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ATEC is structured
to supply equipment suitable for installation in explosion hazardous
area according to |
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CENELEC rules. |
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Cables carrying different
signals types arel adeguately set apart to ensure integrity and prevent
any . |
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form of interference.
Cable routing is arranged within the analyzer shelter according to
the best |
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engineering practice. |
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Power distribution
panels are provided with individual insulation circuit for each item
complete with |
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automatic circuit
breakers and lamps; each electric motors are protected by a thermal
cutout. |
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J-boxes for alarm,
analog and digital signal, serial link each one equipped with terminal
strip considering |
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adequate spare are
installed outside the shelter. |
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4. |
Lighting system |
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Internal and external
systems are usually based on rapid start fluorescent type lamps using
EEx-d lamp |
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holders. |
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5. |
Utilities |
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Utilities design is
strictly depending on analysis application and plant availability. |
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ATEC packages are
engineered according to the following guidelines: |
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- headers installed
outside on the same side of sampling systems; |
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- instrument air and
water headers equipped with on line filtration unit; |
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- each utility take-off
will provided with an isolating valve; |
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- vent header equipped
with flame arrestor |
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- steam and condensate
headers will be thermal insulated. |
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6. |
Air conditioning and
ventilating system |
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Our application includes the supply of a redundant air conditioning
and pressurizing system manufactured
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by ATEC. |
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Further technical
details on this item are available on dedicated ATEC brochure |
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7. |
Safety devices |
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Our standard package
includes the supply of a complete alarm control system based on the
following |
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equipment : |
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- Differential pressure
switch, to give alarm for low pressurization inside the shelter. |
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- Flow switches (one
for each ventilation fan) |
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- Combustible gas
monitors with the ancillary control unit |
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- Toxic gas monitor
with the ancillary control unit |
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- Temperature switch
for high temperature inside the shelter |
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Contacts coming from
the above apparatus are managed by shelter alarm control system based
on PLC |
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technology. |
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The shelter are equipped
with alarm annunciators according to ISA-1 standards both assembled
in EExd |
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enclosure according
to CENELEC, for hazardous area. |
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The alarm contacts
available to control room are indipendent and insulated, Normally
Open (NO) fail safe |
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type with alarm condition
at the de-energized state. |
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8. |
Sample handling systems |
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Sample pre-conditioning,
fast loop and sample conditioning/validation units are designed and
engineered |
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according to Customer
specifictaions, process fluid characteristics and hold-up time in
order to provide |
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significant sample
to analyzer. |
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Standard liquid calibration/validation
facilities include sample drum with nitrogen driven piston, level
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control, double block
& bleed stream selection, portable sample collection bottle with
quick coupling. |
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Components are selected
on the basis of high performance and material compatibility (stainless
steel AISI |
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304, Hastelloy C276,
PFA, PTFE). |
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9. |
Sample Recovery System |
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Standard sample recovery
system includes supporting rack, drum, level switches, local instruments
(P1, |
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T1), pump ADPE motor
driven, valves and local panel with push buttons and selectors for
local/remote |
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control selection
and for pump start/stop. |
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