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Salt Separation Services Ltd

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Total EPFollowing a competitive tendering process, Salt Separation Services were awarded a contract from Total E&P Nederland for a containerised water purification package for installation on the F15-A platform in the Southern North Sea. The contract is worth approximately £1.1 million. 

The F15-A5 well of Total E&P Nederland, produces gas from Volpriehausen sandstone. The peak initial gas production of F15-A5 is 350 kNm3/d. Performance of the well has been reduced by salt deposition. Salt accumulates in the well riser and limits the gas flow. Seawater is to be treated and injected to the well riser to dissolve the salt.

Seawater contains suspended solids, bacteria, dissolved salts and dissolved oxygen, all of which can have an adverse effect on the injection system as well as on the well. Therefore their quantity in the injection water is to be reduced to an acceptable level to prevent any corrosion and plugging.

Due to the fact that the platform is unmanned, the usage of chemicals have been limited as far as possible. As the platform may be permanently unmanned in the future, the unit has been designed to operate automatically

The innovative solution includes:

  • Over sized pre-filtration to improve filtration efficiency and reduce the frequency of disposable filter changes.
  • Two pass RO system with only one high pressure pump to reduce package footprint and weight, whilst also simplifying the process and controls.
  • Recycling of second pass RO concentrate back into first pass RO feed to dilute the influent seawater and increase the net overall recovery.
  • Reduced first pass RO recovery to remove the requirement for antiscalant dosing.
  • RO arrays designed at low flux rates to reduce potential fouling. 
  •  No CIP system – thereby reducing package footprint, weight, complexity and cost. Due to the relatively low number of RO membrane elements (3 x 8” and 3 x 4”) a cost-benefit exercise identified that RO membrane replacement instead of RO membrane cleaning would be the most cost-effective solution.

Production of the containerised water purification system, deaerator column and storage tank has now started and is expected to be completed and delivered later this year.  

The Ministry of Defence has recently awarded a 4 year contract to Salt Separation Services.

The contract, worth approximately £2.3 million, was awarded following a comprehensive pre-qualification and tendering process. 

Under the contract, Salt Separation Services will manufacture, supply and install a Reverse Osmosis plant, which converts seawater into drinking and process water for HM Vanguard Submarines.

The equipment is to replace aging distilling plants which have become difficult to support with many items now obsolescent.

Vanguard

To verify that the plant achieves very stringent noise, vibration and shock requirements, a prototype plant will be produced for type testing.

The company, based in Rochdale, currently provides spares, repairs, management of documentation and 24 hour technical support.

Salt Separation Services have demonstrated their ability and commitment to the Ministry of Defence, having undertaken numerous contracts for Royal Navy vessels.
 

Talisman ProjectFollowing a competitive tendering process, Salt Separation Services were awarded a contract from a UK based operator for a skid mounted Fresh Water Maker Package for an Offshore Development Project in the North Sea. The contract is worth approximately £0.7 million.

The skid mounted fresh water package will be required to produce fresh (potable) water and demineralised water from seawater. The Fresh Water Maker Package will include remineralisation and chlorination for potable water production. 

The innovative solution includes:

  • Over sized pre-filtration to improve filtration efficiency and reduce the frequency of disposable filter changes.
  • Two pass RO system with only one high pressure pump to reduce package footprint and weight, whilst also simplifying the process and controls.
  • Recycling of second pass RO concentrate back into first pass RO feed to dilute the influent seawater and increase the net overall recovery.
  • Reduced first pass RO recovery to remove the requirement for antiscalant dosing.
  • RO arrays designed at low flux rates to reduce potential fouling.
  • No CIP system – thereby reducing package footprint, weight, complexity and cost. Due to the relatively low number of RO membrane elements (5 x 4” and 3 x 2½”) a cost-benefit exercise identified that RO membrane replacement instead of RO membrane cleaning would be the most cost-effective solution.
  • ATEX Zone 2 rated package.

Production of the Fresh Water Maker Package has now started and is expected to be completed and delivered later this year.  

RFA Fort VictoriaThe largest ship currently in Royal Fleet Auxiliary, RFA Fort Victoria, is to be fitted with latest generation Reverse Osmosis (RO) desalination plants designed and manufactured by Salt Separation Services of Rochdale.

The contract, which is due to start production shortly and is worth around £0.5 million, has been awarded by Cammell Laird Shiprepairers and Shipbuilders who will be overseeing the ships forthcoming refit.

The two RO plants will produce upto 160 m3/d of drinking water from seawater and will be fitted with Ultrafiltration (UF) technology for improved seawater pre-filtration.

In addition, a standalone 5 m3/d plant will be fitted for providing high quality ‘technical’ water.

It is vital to correctly service Reverse Osmosis (RO) plants to ensure they run effectively and produce the all-important water requirements your company demands! For example, it is not all that difficult to do extensive damage to the RO membranes in a relatively short period of time.

Salt Separation Services have a team of specialist service engineers, who can draw on years of knowledge and experience with both our own and other manufacturers RO plants, to ensure they run correctly and to prevent unnecessary failures which could result in the loss of water production with the associated consequences this may entail.

The key benefits of using Salt Separation Services engineers for your RO plant servicing are:

  • Early detection of faults before they become apparent to the operator or become worse.
  • Prevention of equipment failure by detailed inspection, calibration and function testing.
  • Carry out troubleshooting and fault finding on the RO plant.
  • Notice and suggest the need for improvement in either production or efficiency of the plant.
  • Undertake operator training to build up the knowledge of the RO plant operator.
  • Quality Management System fully in accordance with BS EN ISO 9001:2008.
  • Extensive range of support spares and consumables available.
  • Use of calibrated and traceable test instrumentation and equipment. 

Salt Separation Services are able to package process plants based on a client’s design.

Products types include filtering, desalination, water purification, UV disinfection, chemical dosing and any application where there is a combination of vessels, valving, piping, pumps, instrumentation, controls and filters, in order to avoid the high costs of site assembly and ensure we meet our high quality standards.

All types of process plant can be skid-mounted, which makes installation easy and reduces the requirement for on-site fabrication. With a fully welded construction, our package units can be purpose-produced to all industries according to individual customer specifications. We liaise closely with our clients to ensure that we fulfil all requirements. Maximum dimensions are metres wide by metres long per section, and up to 10 tonnes in weight.

Non-Destructive Testing (NDT) can be carried out on all products before despatch, including Leak Testing, Hydrostatic Pressure Testing, Load Testing, Magnetic Particle Inspection, Positive Material Identification and Radiography.

Products can be finished using a range of techniques which include shot and bead blasting, polishing, painting, pickling and passivating, FBE coating and rubber lining.

Salt Separation Services can supply a skid package design service which will give clients a range of options including the incorporation and calculation of piping systems, vessel fabrication, pneumatic and electrical systems, instrumentation and insulation, as well as performance/function testing.