Subsea Distribution & Accumulation

J+S has 20 years of experience in design, manufacture, repair and replacement of a range of Subsea Control Systems equipment.

This includes electrical, hydraulic and combined systems on both small and large scales.
SUBSEA DISTRIBUTION & ACCUMULATION ASSEMBLIES
Modular Subsea Distribution Solutions.
Subsea Distribution Assemblies

J+S has produced a range of Subsea Distribution Assemblies to meet bespoke client requirements for hydraulic, chemical and electrical distribution.

Modular Subsea Distribution Solutions.

Modular design configured for various subsea applications.

Modular design
J+S has produced a Subsea Distribution Unit (SDU) design that is modular in construction. This approach makes it easier and more cost-effective to reconfigure the unit for different applications, where different numbers of electrical and hydraulic circuits are required.

Individual sub-assemblies can be removed without recovering the compete SDU.

We work closely with our customers

J+S designs, manufactures, tests and supports installation of the SDU including electrical and hydraulic interfaces and jumpers whilst maintaining physical and functional fidelity with previously installed equipment.

We work closely with our customer at each step in the project, to ensure that we deliver the right product at the right time and right price. Where appropriate, instead of re-using inductive couplers, we use subsea matching transformers, designed and manufactured by J+S for this purpose.

Key Features
  • Modular design for re-use in a variety of applications
  • Oil-filled, pressure compensated electrical fuse chamber
  • Two electrical input channels
  • Up to ten electrical outputs per channel
  • Multiple HP and LP hydraulic inputs
  • HP and LP outputs configured to client requirements
  • Mechanical strain relief in excess of 10 tonnes on input umbilicals dependent on umbilical specification.
  • Frame constructed in mild steel with subsea paint finish
  • Independently retrievable EDB
  • Depth rated to 300m
  • Tailored to existing footprint requirements
SUBSEA ELECTRICAL DISTRIBUTION UNIT

J+S have designed and delivered a range of bespoke Subsea Electrical Distribution units for use as a junction box within a larger system, Subsea Umbilical Termination or stand-alone plug and play requirements.

Numerous applications

The Electrical Distribution Box can be used in numerous applications and has several interfacing options such as subsea connectors or J+S high integrity penetrator technology.

This provides a versatile interfacing solution for multiple subsea connection points.

Key Features
  • Oil filled pressure balanced housing
  • High integrity polyethylene injection mould penetrator using proven military technology
  • Safety pressure valve to remove potential pressure differentials within the housing
  • Pressure balancing using custom designed piston compensation system
  • Constructed in alloy, 316L stainless steel or titanium for excellent corrosion resistance
  • Qualification tested to depth of 300m
  • Internal splicing using proven polyethylene moulding technique
  • Multiple connection ports (dependent on size of housing)
ACCUMULATOR FILTER UNIT

J+S has designed a Subsea Accumulator & Filter Unit (SAFU) in accordance with industry specifications.

Direct interchangeable unit
The Subsea Accumulator & Filter Unit is a direct interchangeable unit to replace current equipment coming to the end of its life. The Subsea Accumulator & Filter Unit has a suitable steel frame with removable covers for ease of assembly, maintenance and testing.
Key Features
  • 4 x 54 litre Subsea Accumulators c/w stainless fittings and mounting brackets
  • Working pressure = 207 bar
  • 2 x 6 micron subsea high pressure filters
  • Earth bonding points and straps
  • Mounting and guide interfaces as per existing units
  • Pressure tested and flushed to SAE AS4059 Class 6f using HW540E control fluid
  • 4 point lifting and sling set
  • Forklift pockets for handling during assembly and storage
  • Protective paint coatings to Norsok M501 (RAL 9003 White)
  • Fibregrid fitted protective covers for dropped object protection
  • Subsea diver operated isolation valves
  • Labels and markings
  • Manufacturing Record Book including all test data and certification
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  • J&S Subsea Limited
  • The Lombard Centre
  • Kirkhill Place
  • Dyce
  • AB21 0GU
  • info@jands.co.uk
  • +44 1224 773435
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James Morris – Engineering Director
James joined the Royal Navy from school where he successfully completed a 5-year Marine Engineering Apprenticeship. After 10 years’ service he started a career in hydraulic systems design, manufacture and project management.
After 5 years working in the hydraulic service industry James moved to Kvaerner Oilfield Products as a Support Engineer providing engineering support for production and service teams within the controls group. He was also responsible for the design, manufacture and offshore operation of the Control System Well Monitoring Equipment for Shell assets used during well intervention testing.
Whilst at KOP he completed an Open University Postgraduate Diploma home study course in Manufacturing: Management and Technology
He subsequently moved to RRC Controls Services where he was solely responsible for all the mechanical and hydraulic design of the company’s successful diver installable Subsea Control Module. Over 10 years at RRC he designed and built a range of bespoke subsea equipment from electrical and hydraulic Subsea Distribution Assemblies to Chemical Injection Flowmeter housings.
On moving to J+S Ltd as a Senior Engineer James continued to be responsible for design of subsea and renewables equipment including a new design ROV installable Subsea Control Module and next generation Medium Voltage dry-mate connection systems. During his 10-year tenure at J+S Ltd and SEA James has been promoted to Principal Engineer and then to Engineering Manager.
James has a wealth of knowledge in Project Management and design processes, using Solidworks 3D and document management software to produce highly configurable product designs in very short timescales.
As Engineering Director at J&S Subsea Limited, James looks forward to developing the engineering capabilities of the business, providing innovative designs, high quality products and responsive service to the Subsea Energy Industries.
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Simon Smith – Business Development Director
Simon has worked in the oil and gas sector for over 20 years. He started his career as a planning co-ordinator for offshore development systems and has since been involved in both surface and subsea operation management both locally and overseas with Wood Group, Plexus Ocean Systems and Cameron’s before joining J+S Ltd in 2012 as a Senior Account Engineer. J+S Ltd then became part of SEA Ltd and the Cohort Group where Simon was promoted to Business Development Manager in 2019 before taking part in the management buyout of the Aberdeen based subsea division of SEA to form J&S Subsea Limited.
Simon initially studied Electronic and Electrical Engineering at Edinburgh University and later Engineering Design at The Robert Gordon University and recently became a Certified Project Management Associate through APM. Simon has experience with on and offshore support along with efficiency and safety control and has utilised this to deliver large scale projects for international clients in the energy industries.
As part of J&S Subsea limited, Simon plans to help grow the Subsea Energy business both in the UK and globally while championing a circular economy focus to help provide a better future.
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Simon Smith
Matthew Blair – Executive Chairman
Matt has worked with SEA and previously J+S Ltd for over 10 years and has a wealth of industry knowledge and expertise. Matt works closely with Oil company subsea engineering and production controls departments, supporting their operational assets
Matt worked with Ferranti Computer Systems Ltd in the naval simulation group and through his extensive experience in electronics and sonar, moved into hydrographic survey working with Subsea7, Tritech, and CDL before joining J+S Ltd.

Matt has lead the management buyout of the Subsea Engineering division of SEA for J&S Subsea Limited and is seeking opportunities to transfer technologies and products into the Oil and Gas and marine renewables markets.

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