Deck Decompression Chamber 1600

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Article number: DDC1600

The Hytech-Pommec built deck decompression chambers (DDC) are generally considered among the best available today!

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Product description

Decompression Chamber Ø1600

The Hytech-Pommec Decompression Chamber Ø1600 is designed for straightforward operation, fast action and easy maintenance. Its pressurisation system is over-dimensioned for structural performance and improved flow. The chamber accommodates a maximum of four occupants, with up to three occupants in the Main Chamber (MC) and one occupant in the Entrance Lock (EL). The maximum operating depth is 50 msw / 5.13 bar.

The MC supports several occupant configurations: two occupants lying down, three occupants sitting, or two occupants lying down with one attendant. The chamber has an inside diameter of approximately 1,600 mm and an overall length of approximately 3,600 mm.

Standard configuration

The standard Decompression Chamber Ø1600 includes two foldable patient bunks in the MC with fire-retardant mattresses, a foldable seat in the EL and floor covering plates in both compartments. Two 150 mm viewports allow observation of the MC and EL.

An integrated supply lock in the MC uses stainless-steel doors, one-hand operation and an interlock system. The chamber stands on a skid foundation frame with space for up to ten 50 litre HP air cylinders. The cylinders themselves are optional.

The standard BIBS installation covers both compartments and uses an overboard dump system. The MC provides 3 + 1 mask connection points, while the EL provides 1 + 1 connection points. BIBS masks are not included in the standard configuration and are available separately.

Standard communication equipment includes the Hytech-Pommec chamber communication system, speakers and microphones in both compartments and a secondary hammer communication system. A UPS / back-up battery supports critical equipment for a minimum of 2–3 hours.

The chamber also includes pressure-proof LED lighting, a digital Caisson pressure indicator, triple countdown timer and an oxygen/carbon dioxide analyser with audible and visual alarms. The control panel contains the relevant operational controls, supply pressure gauges and two precision depth gauges.

A hyperbaric fire extinguisher is installed in the MC as standard.

Optional chamber equipment

Optional equipment allows the chamber configuration to be extended according to operational requirements. Available options include a flowmeter, five BIBS masks, BIBS gas selection valve, Back Pressure Regulator and HP secondary air supply.

Further options include a female STANAG 1079 connection flange, electrical heating system, emergency communication handsets, headset, carbon dioxide scrubber, oxygen injection level control, cooler, chiller and an additional fire extinguisher for the EL.

Hytech-Pommec also offers the Digital Chamber Monitoring Control (DCMC). This system monitors depth, supply pressures, flush rate, oxygen and carbon dioxide levels and optionally temperature. An automatic pressure control extension adds automatic, semi-automatic and manual pressure-control modes. Pre-programmed dive tables and Lloyd’s Register certification are also available as options.

Optional container configuration

The decompression chamber can also be installed in an ISO/CSC standard 20 ft container. Container-specific options include insulation, rubber flooring, inverter cooling and heating, operator oxygen analysis, emergency breathing apparatus, an emergency-air umbilical, offshore marine coating and a DNV-certified offshore container.

Specifications

Specification Value
Standard chamber specifications
Capacity Max. 4 occupants
Main Chamber capacity Max. 3 occupants
Entrance Lock capacity Max. 1 occupant
MC configuration 2 occupants laying down
MC configuration 3 occupants sitting
MC configuration 2 occupants laying down + 1 attendant
Maximum operating depth 50 msw / 5.13 bar
Design pressure 5.65 bar
Hydrostatic test pressure 8.1 bar
Depth gauges Dual scale, 0.25% accuracy
Overall length ± 3,600 mm
Inside diameter ± 1,600 mm
Empty weight ± 2,700 kg standard, no options
Inner length EL ± 1,100 mm
Inner length MC ± 2,400 mm
Volume EL ± 1.9 m³
Volume MC ± 4.7 m³
Supply lock length ± 320 mm
Supply lock diameter ± 230 mm
Viewport free diameter ± 150 mm
Door diameter ± 700 mm
Design temperature -10°C to +50°C
Paint Base and top layer white RAL 9010
MC primary supply control valve 1x external
MC secondary supply control valve 1x external
EL primary supply control valve 1x external
EL secondary supply control valve 1x external
MC exhaust control valve 1x external
EL exhaust control valve 1x external
Essential safety valve 1x
Patient bunks 2 foldable bunks in MC
Viewports 2 total: 1 in EL and 1 in MC
Viewport diameter 150 mm
Skid HP cylinder capacity Up to 10 × 50 litre cylinders; cylinders optional
Lifting provisions 2 lifting eyes
BIBS MC connections 3 + 1 mask connection points
BIBS EL connections 1 + 1 mask connection points
Secondary communication 3 hammers
Internal LED lighting MC 2x, EL 1x
UPS duration Minimum 2–3 hours
UPS-supported equipment Communication, one MC internal light, analyser
Countdown timer Triple timer
Depth gauges in control panel 2 precision gauges
Precision depth gauge accuracy 0.25% FS
Precision depth gauge scale 0–250 fsw / 0–76 msw
Pressure vessel standard PED 2014/68/EU Module G
Pressure vessel standard NEN-EN 13445:2021
Window standard ASME PVHO-1-2023
Window certification PVHO VP-5
Safety philosophy IMCA D014, latest revision
Examination/testing guidance IMCA D018, latest revision
Documentation language English
Standard analyser specifications
Analyser power supply 24 VDC
Inlet gas pressure 0.1–5.0 bar
Inlet gas flow 20–50 ln/h
O₂ measurement range 0–100%
CO₂ measurement range 0–1%
O₂ low alarm <19%
O₂ high alarm >23%
CO₂ high alarms 0.20% and 0.50%
Optional chamber specifications
BIBS masks 5 masks
BIBS mask connection Quick-connect/disconnect male plugs
Back Pressure Regulator requirement Required when using BIBS masks deeper than 30 msw
HP secondary air supply 5 × 50 litre cylinders
HP cylinder pressure 300 bar
Alternative HP configuration 7 cylinders at 200 bar when 300 bar filling is unavailable
Female flange standard STANAG 1079
Headset connection 7-pin connector
Cooler ambient chamber-area range 18–24°C
Maximum compressed-air temperature for cooler 40°C
Cooler water supply requirement Fresh water at 5°C
EL fire extinguisher 3 litre
DCMC HMI 12-inch touchscreen
DCMC depth units msw, bar, ATA, psi, kPa
Automatic pressure control HMI 15-inch touchscreen instead of 12-inch
Automatic pressure-control modes Automatic, semi-automatic and manual override
Pre-programmed dive-table examples US Navy, Comex, DatCoDat or Dciem
20 ft container specifications
Container type ISO/CSC standard 20 ft container
Container dimensions 6060 × 2440 × 2590 mm
Main power input 230 VAC, 50 Hz, 16 A, 1x
Internal lighting 3 units
Emergency internal lighting 2 units
Wall sockets 2x European connections, 230 VAC, 50 Hz
DDC power connection box 1x
Container fire extinguisher 5 kg portable foam extinguisher
Optional container specifications
Insulated-container cladding RAL 9010
Inverter cooling/heating 1 unit
Inverter operating outside-temperature range 5°C to +40°C, if container is insulated
Emergency breathing apparatus cylinder 6 litre HP cylinder
DNV offshore container standard DNVGL-ST-E271 / ISO 10855

 

Features

Standard features

  • Maximum capacity of 4 occupants
  • Main Chamber and Entrance Lock
  • Two foldable patient bunks in the Main Chamber
  • Fire-retardant mattresses
  • Two Ø150 mm viewports
  • Integrated supply lock with interlock system
  • Skid foundation frame
  • Provision in skid for up to ten 50 litre HP cylinders; cylinders not included as standard
  • Floor covering plates in both compartments
  • Two lifting eyes
  • Foldable seat in Entrance Lock
  • Spare pressure-vessel penetrators
  • Double-hinged chamber doors
  • BIBS installed in Main Chamber and Entrance Lock
  • BIBS overboard dump system
  • Secondary hammer communication system
  • Hytech-Pommec chamber communication system
  • Speaker/microphone in both compartments
  • UPS / back-up battery for critical equipment
  • Internal pressure-proof LED lighting
  • Digital Caisson pressure indicator
  • Triple digital countdown timer
  • Oxygen / carbon dioxide analyser
  • Longitudinally mounted control panel
  • Hyperbaric fire extinguisher in Main Chamber
  • Silencers on supply and exhaust lines
  • Deflector caps on internal exhausts, depth gauges, analysers and safety valves
  • Essential safety valve
  • Skin valves on both sides of gas/liquid chamber penetrators

Optional features

  • Flowmeter for Main Chamber flushing
  • Five BIBS masks
  • BIBS gas selection valve
  • Back Pressure Regulator
  • HP secondary air supply
  • Female STANAG connection flange
  • Electrical heating system
  • Emergency communication handsets
  • Headset
  • Carbon dioxide scrubber
  • Oxygen injection level control
  • Chamber cooler
  • Chiller
  • Fire extinguisher for Entrance Lock
  • Digital Chamber Monitoring Control (DCMC)
  • Automatic pressure control extension for DCMC
  • Pre-programmed dive tables
  • Lloyd’s Register certification
  • FMEA
  • ISO/CSC 20 ft container configuration
  • Double-door container configuration
  • Insulated container
  • Anti-slip rubber floor
  • Inverter cooling / heating
  • Operator oxygen analyser
  • Emergency breathing apparatus for operator
  • Umbilical for operator breathing apparatus
  • Offshore marine coating
  • DNV-certified 20 ft offshore container