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TR (Temporary Refuge) pressurization unit
OUTSIDE 35 C
HUMIDITY 90%
22º C
Inside
PROVIDED BY
HEINEN & HOPMAN
Heating
Ventilation
Air Conditioning
Refrigeration
INTRODUCTION
The Cullen Report into the Piper Alpha disaster (Cullen,
1990) recommended that a temporary refuge (TR)
should be provided on all offshore installations. The TR is
required to have a defined performance standard related
to its survivability when exposed to a major accident that
includes, but is not limited to, ingress of smoke,
flammable and toxic gas. HVAC forms an essential part of
this.
As the TR is the last space for the crew before abandoning the vessel, rig
or platform, the HVAC system should create and maintain a comfortable
and safe indoor condition free of any explosive and/or toxic gas-air
mixtures.
The air quality and pressure inside the TR-zone is than of top priority. This
can be created by our special TR pressurization unit (TR-unit).
APPLICATION
Our TR-unit basically consists of an explosion proof fan, a filter section that filtrates H2S & SO2 and optionally a heater. The power
supply is coming from the vessels Uninterrupted Power Supply (UPS) system or optionally by a battery power pack to ensure
operation at all times.
Our TR unit provides clean filtered fresh air, free from H2S & SO2 contaminates in an over pressured Temporary Refuge area. Three
levels of filtration (G4, F7, and active carbon) is applied to incoming air before being supplied to the TR.
The control system constantly compares inside and outside pressures and LEL’s, and should the TR area pressurization or LEL levels
fail, provide a visual and/or audible warning.
Our TR unit is designed for external installation to TR areas with a supply duct to the TR area interior. The TR unit control panel is
designed to be installed internally within the TR area.
When the TR unit is operational the unit is designed as a fail-safe system, i.e. should the unit sustain damage or an air seal leaks,
then clean air will leak out of the unit rather than contaminated air being drawn in.
During normal operation is the TR unit “dead” and closed by gastight dampers. It comes operational for emergency situations.
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KEY FEATURES
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Design according DNV, NMD, NORSOK, HSE. ABS, LR & BV;
Ambient range from -20°C/15%RH to +45°C/80%RH
Casing leakage according to class L1, EN-1886
ATEX Zone II
Reliable
Double walled SS316L
UPS powered (optionally with battery power pack)
Easy service and maintenance access;
Standard H2S concentrations 200 / 400 / 600 ppm
Standard capacity 1000, 4000, 6000 and 7500m³/h. (600ppm)
Information
01 - Inlet grill and motorised control damper (Ex)
03 - Purafil SP Blend, dual hydrocarbon filter, ATEX
05 -
02 - Pre filter, class G4, ATEX, Second filter, class F7, ATEX
04 - Fan motor, 3 x 230V / 50 Hz, Ex-II-2G-d-IICT4
06 -
FUNCTIONING
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- Fan, anti-sparkling, Ex-e/d + brass lining
- Flow switch & H2S and CH4 sensors (Ex)
07 - Motorised gastight damper, Ex
TR 1000
Technical Data TR-1000-3 - 50Hz / 60Hz
Ambient H2S concentration
600ppm
TR H2S concentration
10ppm (60min)
Air quantity
1.000m3/h
Pst
1.350Pa
Execution
SS316L, ATEX Zone II
Primary filter
G4
Secondary filter
F7
Tertiary filter
Activated Carbon + Alumina
Power supply fan
3x380V-50Hz / 3x440V60HZ
Rated power
1.1kW / 1.3kW
Power supply heater
3x380V-50Hz / 3x440V60Hz
Capacity
(custom designed) kW
Power supply valves
1x230V-50Hz / 60Hz
Weight (excl. heater)
1225 kg
Control panel (separate
delivery
Safe Area
TR 4000
Technical Data TR-4000-12 - 50Hz / 60Hz
Ambient H2S concentration
600ppm
TR H2S concentration
10ppm (60min)
Air quantity
4.000m3/h
Pst
1.350Pa
Execution
SS316L, ATEX Zone II
Primary filter
G4
Secondary filter
F7
Tertiary filter
Activated Carbon + Alumina
Power supply fan
3x380V-50Hz / 3x440V60HZ
Rated power
3.2kW / 3.7kW
Power supply heater
3x380V-50Hz / 3x440V60Hz
Capacity
(custom designed) kW
Power supply valves
1x230V-50Hz / 60Hz
Weight (excl. heater)
2640 kg
Control panel (separate
delivery
Safe Area
TR 6000
Technical Data TR-1000-3 - 50Hz / 60Hz
Ambient H2S concentration
600ppm
TR H2S concentration
10ppm (60min)
Air quantity
6.000m3/h
Pst
1.350Pa
Execution
SS316L, ATEX Zone II
Primary filter
G4
Secondary filter
F7
Tertiary filter
Activated Carbon + Alumina
Power supply fan
3x380V-50Hz / 3x440V60HZ
Rated power
4.0kW / 4.6kW
Power supply heater
3x380V-50Hz / 3x440V60Hz
Capacity
(custom designed) kW
Power supply valves
1x230V-50Hz / 60Hz
Weight (excl. heater)
3350 kg
Control panel (separate
delivery
Safe Area
TR 7500
Technical Data TR-4000-12 - 50Hz / 60Hz
Ambient H2S concentration
600ppm
TR H2S concentration
10ppm (60min)
Air quantity
7.500m3/h
Pst
1.350Pa
Execution
SS316L, ATEX Zone II
Primary filter
G4
Secondary filter
F7
Tertiary filter
Activated Carbon + Alumina
Power supply fan
3x380V-50Hz / 3x440V60HZ
Rated power
5.5kW / 6.4kW
Power supply heater
3x380V-50Hz / 3x440V60Hz
Capacity
(custom designed) kW
Power supply valves
1x230V-50Hz / 60Hz
Weight (excl. heater)
3785 kg
Control panel (separate
delivery
Safe Area
Alternatives available on request.
Owing to continued product development Heinen Hopman reserves the right to introduce alternations without prior notice.
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