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TR (Temporary Refuge) pressurization unit

OUTSIDE 35 C HUMIDITY 90%

22ยบ 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 • • • • • • • • • •

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

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FUNCTIONING

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6

H H

6

- 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-6000-3 - 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-7500-12 - 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. Due to continuous product development Heinen Hopman reserves the right to introduce alterations without prior notice.


Projects with H&H’s tr unit installed JB-114 Client Jack-Up Barges Generation 1st Type of platform/vessel Heavy Lift Working area North Sea

Workfox Client Workfox Generation 1st Type of platform/vessel Multi purpose Working area North Sea

JB-115 Client Jack-Up Barges Generation 2nd Type of platform/vessel Heavy Lift Working area North Sea

EnQuest Client EnQuest Generation 2nd Type of platform/vessel FPSO Working area North Sea

JB-118 Client Jack-Up Barges Generation 3rd Type of platform/vessel Heavy Lift Working area Abu Dhabi

Projects with tr pressure tests performed Ensco 72 Client Ensco Heliport Den Helder Type of vessel Oilrig Location Offshore Northsea

Seafox 2 Client Workfox Heliport Den Helder Type of vessel Accommodation barge Location Offshore Northsea

Seafox 4 Client Workfox Heliport Den Helder Type of vessel Accommodation barge Location Offshore Northsea

Seafox 5 Client Workfox Heliport Den Helder Type of vessel Accommodation barge Location Offshore Northsea

Seafox 7 Client Workfox Heliport Den Helder Type of vessel Accommodation barge Location Offshore Northsea

Switf-1 Client Switf - Switf 1 Heliport Den Helder Type of vessel Accommodation barge Location Offshore Northsea

L10-A Client Engie (GDF Suez) Heliport Den Helder Type of vessel Oilrig Location Offshore Northsea

G17-A Client Engie (GDF Suez) Heliport Den Helder Type of vessel Oilrig Location Offshore Northsea

G5-A Client Engie (GDF Suez) Heliport Den Helder Type of vessel Oilrig Location Offshore Northsea

L15-A Client Engie (GDF Suez) Heliport Den Helder Type of vessel Oilrig Location Offshore Northsea


Projects with tr pressure tests performed F17-A Client Engie (GDF Suez) Heliport Den Helder Type of vessel Oilrig Location Offshore Northsea

Endeavour Client GMS Heliport Den Helder Type of vessel Accommodation barge Location Offshore Northsea

Endurance Client GMS Heliport Nowitch Type of vessel Accommodation barge Location Offshore Northsea

JB-114 Client Jack-up Barge Heliport Den Helder Type of vessel Accommodation barge Location Offshore Northsea

JB-115 Client Jack-up Barge Heliport Den Helder Type of vessel Accommodation barge Location Offshore Northsea

JB-117 Client Jack-up Barge Heliport Den Helder Type of vessel Location Offshore Northsea

JB-118 Client Jack-up Barge Heliport Den Helder Type of vessel Acommodation barge Location Offshore Northsea

Enquest Producer Client Enquest Heliport Aberdeen Type of vessel FPSO Location Offshore Northsea

Barge Client Contour Global Heliport Rwanda Type of vessel Methane gas barge Location Lake Kiva - Rwanda

Eirrik Raude Client Oceanrig Heliport Port Stanly Type of vessel Oilrig Location Offshore Falkland Islands

Hermod Client Heerema Heliport Den Helder Type of vessel Semi submersible rig Location Offshore Northsea

Oleg Strashnov Client SHL Heliport Den Helder Type of vessel Semi submersible vessel Location Offshore Northsea


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TR Unit  

The Cullen Report into the Piper Alpha disaster (Cullen, 1990) recommended that a temporary refuge (TR) should be provided on all offshore i...

TR Unit  

The Cullen Report into the Piper Alpha disaster (Cullen, 1990) recommended that a temporary refuge (TR) should be provided on all offshore i...