Subsea Distribution & Accumulation

J+S has 20 years of experience in design, manufacture, repair and replacement of a range of subsea distribution & accumulation 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 complete 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 Electrial Distrubution 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.

Numerour 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

Engineering design

Operational support

Subsea connectivity systems

Subsea distribution & accumulation

Subsea transformers

Subsea control manifolds

Subsea in-line splice assemblies

High voltage connections

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  • info@jands.co.uk

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Accreditations & Affiliations

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Phil Reid

Managing Director

Phil has worked in the energy industry for over 25 years. He started his career with Kvaerner FSSL progressing through a variety of roles in subsea engineering, from manufacturing to leading some of their most complex projects all over the world. He worked with the original J+S for a period before moving on to Genesis Oil and Gas as a Subsea Controls Engineering consultant; during that period, he was seconded to Centrica Energy (now Spirit Energy) which led to a permanent role as Lead Subsea Controls & Umbilical Engineer for Developments, Capital Projects and Operated Assets. For almost a decade Phil successfully delivered Capital Projects from concept right through to project close out whilst also looking after the running of their subsea assets.

As part of J&S Subsea limited, Phil oversees the day-to-day operations and will grow the business both in the UK and globally. 

James Morris

Engineering Director

James’s career started when he joined the Royal Navy from school as an Artificer Apprentice. After a 5-year Marine Engineering Apprenticeship he served in surface ships HMS Glamorgan, HMS Edinburgh, and HMS Glasgow and at Rosyth as part of an engineering support team. 

Moving into the Energy Industry in 1992, over the next 26 years he gained a wealth of experience within large and small companies on operation, design and project management of subsea control systems and equipment. This period started with several years as a Project Engineer for a family run hydraulic services company Grampian Hydraulics followed by 5 years as a Support Engineer at Kvaerner Oilfield Products.  James joined RRC Controls Services ltd in 2001 before finally moving to J+S Ltd in 2010. At J+S his dedication and technical capabilities were rewarded with several promotions until becoming a member of the management buyout team. 

He has designed an extensive array of subsea equipment from basic cable penetrators to complete subsea control modules. 

James thrives on providing solutions for client’s problems. 

As Engineering Director, James will ensure that the company provides clients with timely, cost effective and technically sound solutions and services. 

Matthew Blair

Executive Chairman

Matt Blair is Executive Chairman of J+S Subsea which was formed in October 2020 through a management buyout of the Subsea Engineering Division of Systems Engineering and Assessment Ltd.

With J+S Subsea and SEA for over 14 years, Matt has a wealth of industry knowledge and expertise.

Previously an Electronics Engineer with Ferranti Computer Systems Ltd specializing in sonar and submarine command systems, Matt moved into hydrographic survey working with Subsea7, Tritech, and CDL before joining J+S Subsea.

He was Vice Chair of the Decom Leadership Group of Decommission and in that role, he facilitated industry and academic studies on potential for reuse and repurposing of decommissioned equipment. He is still actively involved with the reuse agenda through Decommission and OEUK.

Although not part of day-to-day operations, Matt stays close to company strategic matters and is seeking further opportunities to update and transfer Energy technologies and products into the Marine Renewables markets and help to develop the broader circular economy.

Contact Us

  • J&S Subsea Limited
  • The Lombard Centre
  • Kirkhill Place
  • Dyce
  • AB21 0GU
  • info@jands.co.uk
  • +44 1224 773435
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