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Product

Subsea IWOCS electro-hydraulic umbilicalISO 13628-55,000–10,000 psiIWOCS / RLWI

Intervention Workover Control System Umbilical5,000–10,000 psi electro-hydraulic & optical dynamic subsea well intervention umbilical

Dynamic IWOCS umbilical engineered to ISO 13628-5 and API RP 17G for subsea tree installation, completion and Riserless Light Well Intervention (RLWI), combining 345–690 bar hydraulic hoses, CAN-bus/power quads and 316L FIMT optics.

Water-resistant
Anti-torsion braid
EMC screen
Oil-resistant
Order designation
IWOCS-EH-10F-4Q-FO
Nominal OD
58.5 mm
Weight in air
3,490 kg/km
Weight in sea
820 kg/km
Breaking load
240 kN
All sizes (12)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Hydraulic WP
345 / 690 bar
5,000 psi & 10,000 psi rated hoses
Functions
6 to 32 Hoses
1/4″, 3/8″ & 1/2″ low-expansion bores
Electrical
0.6/1 kV + FO
Screened CAN-bus/power quads + FIMT
Design depth
Up to 3,000 m
Collapse-resistant deepwater service
Breaking load
120–600 kN
Polyaramid or contra-helical GIPS wire
Standard
ISO 13628-5
API Spec 17E & API RP 17G compliant

Typical values for this cable type, based on ISO 13628-5 / API Spec 17E / ISO 13628-7 — confirmed in the datasheet and quotation for your order.

Application fit

Is Intervention Workover Control System Umbilical right for your machine?

Built for dynamic over-boarding from drilling rigs and well-intervention vessels, either clamped to a completion riser or deployed free-hanging.

Vertical / spreader reel

Suitable

High-cycle dynamic fatigue design withstands repeated deployment over rig moonpool and overboard sheaves.

Immersion & wet locations

Suitable

Collapse-resistant thermoplastic hoses and water-blocked electrical quads operate reliably to 3,000 m water depth.

Offshore platform & shipboard deck trays

Suitable

Tough polyether TPU outer sheath resists riser clamp compression, moonpool guides and completion fluids.

Free-hanging vertical run

Suitable

Armoured and polyaramid load-bearing variants support self-weight in deepwater Riserless Light Well Intervention (RLWI).

Energy chain / drag chain

Not suitable

Subsea well-control umbilical is designed for offshore winch and moonpool sheaves, not small automation carriers.

Use M23 Servo Assembly
Typical machinesSubsea Tree InstallationCompletion & Workover RiserRiserless Light Well InterventionSubsea Blowout Preventer (BOP) PodPlug & Abandonment (P&A) Spreads

Construction

Layer by layer

Representative mux-IWOCS cross-section: planetary lay of 345/690 bar polyaramid hoses + 0.6/1 kV power/telemetry quads + 316L FIMT + tensile armour + TPU sheath.

123456
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Subsea control & power quadsStranded tinned copper (IEC 60228 Class 5) power quads (2.5–6.0 mm²) and low-capacitance CAN-bus / Profibus / Ethernet telemetry quads (0.75–1.5 mm²)Provides redundant Channel A + Channel B SEM power and high-speed wellhead telemetry
2High-pressure hydraulic hoses1/4″, 3/8″ and 1/2″ ID polyamide-11 or methanol-barrier PVDF liners with multi-spiral polyaramid fibre reinforcement (345 bar / 5,000 psi and 690 bar / 10,000 psi WP)Low volumetric expansion for rapid Emergency Quick-Disconnect (EQD) valve closing times
3Dielectric & optical FIMT coreCrosslinked polyolefin / XLPE core insulation + laser-welded 316L stainless-steel FIMT with 12–24 G.652.D/G.657.A1 fibresHigh electrical insulation resistance and gigabit optical tree/ROV monitoring
4Profiled polymeric core matrixExtruded PVC/PE channel fillers and water-blocking compound locking hoses and cables in planetary layPrevents internal corkscrewing during riser clamping and tensioned spooling
5Dynamic tensile armourOpposing-lay high-modulus polyaramid braid (clamped riser mode) or double contra-helical GIPS steel wire armour (self-supporting RLWI mode)Delivers 120–600 kN breaking strength with ≤ ±2°/m torsional balance
6Outer marine TPU jacketExtruded high-visibility yellow or black abrasion-resistant polyether polyurethane (TPU) outer sheathProtects against riser clamp pads, moonpool chutes and offshore deck oils

IWOCS-HYD (Direct Hydraulic Control)

8 to 32 hydraulic functions (5,000 psi LP + 10,000 psi HP + glycol/methanol lines) for direct hydraulic tree/workover control

IWOCS-EH (Electro-Hydraulic Mux / RLWI)

Reduced hose count (6–14 hoses) combined with dual redundant power/signal quads, FIMT optics and heavy lift armour for deepwater mux-IWOCS

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on ISO 13628-5 / API Spec 17E / ISO 13628-7. Values for your order are confirmed in the datasheet and quotation.

Electrical

Power quad voltage
600/1000 V AC/DC
Telemetry protocol support
CAN-bus,RS-485, Profibus, DSL & 100Base-FX Optical
Characteristic impedance
100 Ω / 120 Ω screened star-quad
AC test voltage
3.5 kV AC rms for 5 min
Insulation resistance
≥ 1,000 MΩ·km at 20 °C

Thermal

Subsea operating range
−5 °C to +60 °C
Deck reel ambient range
−25 °C to +75 °C
Fluid temperature rating
−20 °C to +70 °C (water-glycol / methanol)

Mechanical

LP hydraulic working pressure
345 bar (5,000 psi) · 1,380 bar burst
HP hydraulic working pressure
690 bar (10,000 psi) · 2,760 bar burst
Design water depth
Up to 3,000 m
Min. breaking load (MBL)
120 kN (polyaramid) to 600 kN (steel armour)
Min. bend radius (dynamic)
12 × OD over moonpool sheave

Resistance

Control fluid compatibility
HW 540/443 water-glycol, mineral oil, methanol
Fluid cleanliness at delivery
NAS 1638 Class 6 / SAE AS4059 Class 6
External hydrostatic collapse
ISO 13628-5 ovalisation & collapse pass
Outer sheath abrasion
DIN ISO 4649 ≤ 35 mm³ polyether TPU

Reference standards

Primary specification
ISO 13628-5 / API Spec 17E
Workover system practice
ISO 13628-7 / API RP 17G
Cleanliness standard
SAE AS4059 / ISO 4406

Identification

Outer jacket colour
High-Visibility Yellow with black metre legend
Hose & quad numbering
Permanent laser-printed function numbers on every hose
Customs tariff (HS)
8544.42 / 3917.39

Sizes

12 standard direct-hydraulic & electro-hydraulic IWOCS umbilical builds

Typical outer diameter, hydraulic working pressures, weights in air/seawater, and tensile breaking loads per ISO 13628-5.

IWOCS configurations & ratings
Order designationHydraulic Hoses + Electrical / OpticalMax WP
bar (psi)		Nominal OD
mm		Weight in air
kg/km		Weight in sea
kg/km		MBL
kN		Min. sheave R
mm		Enquiry
Direct Hydraulic IWOCS Umbilicals (5,000 & 10,000 psi)
IWOCS-HYD-8F-5K6×1/4″ (5k) + 2×3/8″ (5k)345 (5,000)46.51,950380120558
IWOCS-HYD-12F-10K8×1/4″ (5k) + 2×1/4″ (10k) + 2×3/8″ (5k)690 (10,000)54.02,680540150648
IWOCS-HYD-16F-10K10×1/4″ (5k) + 4×1/4″ (10k) + 2×3/8″ (5k)690 (10,000)61.53,420710180738
IWOCS-HYD-20F-10K12×1/4″ (5k) + 4×1/4″ (10k) + 4×3/8″ (5k)690 (10,000)68.04,180890210816
IWOCS-HYD-24F-10K16×1/4″ (5k) + 4×1/4″ (10k) + 4×3/8″ (10k)690 (10,000)74.55,0501,120250894
IWOCS-HYD-32F-10K20×1/4″ (5k) + 8×1/4″ (10k) + 4×1/2″ (5k)690 (10,000)84.06,4201,4603001,008
Electro-Hydraulic Mux & RLWI Dynamic Umbilicals
IWOCS-EH-6F-4Q-FO4×3/8″ (5k) + 2×1/4″ (10k) + 4 Quads + 12FO690 (10,000)52.02,740640200624
IWOCS-EH-10F-4Q-FO6×1/4″ (5k) + 2×1/4″ (10k) + 2×3/8″ + 4Q + 12FO690 (10,000)58.53,490820240702
IWOCS-EH-14F-6Q-FO8×1/4″ (5k) + 4×1/4″ (10k) + 2×1/2″ + 6Q + 12FO690 (10,000)66.04,4801,080280792
IWOCS-EH-20F-6Q-FO12×1/4″ (5k) + 4×1/4″ (10k) + 4×3/8″ + 6Q + 24FO690 (10,000)73.55,5201,350320882
IWOCS-RLWI-8F-ARM4×3/8″ (10k) + 4×1/4″ (10k) + 6Q + 12FO (Steel Armour)690 (10,000)62.55,9803,240520750
IWOCS-RLWI-12F-ARM6×3/8″ (10k) + 6×1/4″ (10k) + 8Q + 24FO (Steel Armour)690 (10,000)71.07,6504,180600852
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • All hydraulic lines are flushed to NAS 1638 Class 6, pressure-tested to 1.5 × WP (7,500 / 15,000 psi), and shipped pressurized with nitrogen or control fluid.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
Hydrostatic proof & volumetric expansion test518 bar (5k lines) & 1,035 bar (10k lines) hold + expansion measurementEvery hose function
Fluid cleanliness flushing verificationParticle count ≤ NAS 1638 Class 6 / SAE AS4059 Class 6Every hydraulic circuit prior to sealing
Electrical quad HV, IR, capacitance & OTDR test3.5 kV AC for 5 min, ≥ 1,000 MΩ·km, and 1310/1550 nm OTDR100 % of electrical & optical cores
Sample tests
Dynamic riser-clamp compression & sheave bend fatigueSimulated moonpool sheave cycling under tension & clamp loadType qualification

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

ISO 13628-5 / API Spec 17E CompliantISO 13628-7 / API RP 17G IWOCS Compatible

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX IWOCS SUBSEA WORKOVER UMBILICAL ISO 13628-5 [WP BAR] [SERIAL] [METRE]
Delivery form
Offshore DNV 2.7-1 compatible steel reels or powered IWOCS reelers
Continuous length
500 m to 3,500 m single-length manufacture
End terminations
Subsea umbilical termination assembly (Umbilical Termination Head) & JIC/MP couplers
Lead time
8–12 weeks ex-works

Technical documents

Downloads

PDFIntervention Workover Control System Umbilical – technical datasheet12 sizes · construction, technical data, approvalsXLSXIntervention Workover Control System Umbilical spec data (Excel)All 12 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

Why is low volumetric expansion critical for 5,000 psi and 10,000 psi IWOCS hydraulic hoses?
During an offshore emergency quick-disconnect (EQD) or ESD sequence, subsea safety valves must close within strict API RP 17G response times. Multi-spiral polyaramid reinforcement minimises radial hose expansion under pressure so hydraulic accumulators discharge rapidly with minimal volume loss.
When should an Electro-Hydraulic Mux IWOCS umbilical be chosen over a Direct Hydraulic umbilical?
In water depths beyond 800–1,000 m, long hydraulic pilot lines suffer signal lag. Electro-hydraulic mux umbilicals transmit valve commands instantly over dual-redundant copper quads or optical fibres to a Subsea Electronics Module (SEM), reducing hose count from 24–32 down to 6–12 lines.
What is the difference between riser-clamped and Riserless Light Well Intervention (RLWI) umbilicals?
Riser-clamped IWOCS umbilicals are strapped every 10–15 m to the completion/workover riser string and use lightweight polyaramid braid. RLWI umbilicals are deployed free-hanging to the subsea lubricator stack and use heavy contra-helical GIPS steel wire armour with 500–600 kN breaking strength.
How are methanol and chemical injection lines protected against permeation?
Dedicated chemical injection and annulus bleed hoses incorporate a co-extruded fluoropolymer (PVDF) inner barrier liner that prevents methanol or corrosion inhibitor diffusion into the surrounding umbilical matrix.

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Intervention Workover Control System Umbilical

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