--- title: Fast-track Replacement Pre-filtration System for SRP | Amazon Filters description: We helped an FPSO make savings by replacing internal assemblies – reducing cartridge change-out time and maintenance hours. Read the case study. image: https://www.amazonfilters.com/hubfs/Super%20Duplex%20Internals%201.jpg --- [+44 (0) 1276 670600](tel:+44%20(0)%201276%20670600) [![Amazon Filters Logo](https://www.amazonfilters.com/hubfs/amz01/Global/Logos/amazon_filters_logo_color.svg) ](https://www.amazonfilters.com) Products [All products](https://www.amazonfilters.com/products) [Filter cartridges & capsules](https://www.amazonfilters.com/products/filter-cartridges-and-capsules) [Filter housings](https://www.amazonfilters.com/products/filter-housings) [Custom filter housings](https://www.amazonfilters.com/products/custom-filter-housings) [Retrofits](https://www.amazonfilters.com/products/replacement-retrofit-filters) [OEM](https://www.amazonfilters.com/products/oem-filters) Applications [Pharmaceuticals and healthcare](https://www.amazonfilters.com/industry/pharmaceutical-filters) [Energy](https://www.amazonfilters.com/industry/energy/) [Water](https://www.amazonfilters.com/industry/industrial-water-filtration) [Food and beverage](https://www.amazonfilters.com/industry/food-and-beverage-filtration) [Chemicals & coatings](https://www.amazonfilters.com/industry/chemical-filters) [Case Studies](https://www.amazonfilters.com/case-study) Company [About Us](https://www.amazonfilters.com/about-us) [Compliance](https://www.amazonfilters.com/compliance) [Contact](https://www.amazonfilters.com/contact-us) [Careers](https://www.amazonfilterscareers.com/) [News](https://www.amazonfilters.com/company-information/news) Resources [Blog](https://www.amazonfilters.com/blog) [Resources](https://www.amazonfilters.com/resources) [Application Notes Library](https://www.amazonfilters.com/application-notes/) [Sustainable Polypropylene](https://www.amazonfilters.com/renewable-polypropylene-p) [ Talk to Sales ](https://cta-service-cms2.hubspot.com/web-interactives/public/v1/track/click?encryptedPayload=AVxigLL0Oq4lAJH9H08QO8yJnKOTdE7ZJ1dhnK%2BQrtluhANRS%2BeIZYDyaxLqPwrngRYLo%2B9fsdYVk6P6PEstK%2FUhtwJGdY20B0vzkGf4dwdp6TPKqjutDLD7QyjnLHzlPVxiQ%2B7AlmYkM%2BQ6Um8WgwHEtAnSnBv5PFvYevdyVlcVkj4mvdClOBE%2BMMnPWj3aYKU%3D&portalId=6888762) [ Get a Quote ](https://cta-service-cms2.hubspot.com/web-interactives/public/v1/track/click?encryptedPayload=AVxigLJROGIbyd30Lwhh%2FYtr45fh49c69UGdbjroNByqjaHkwQnD1dJegkKPeUL5Ed3mtwVjwJmuPIFOAuo%2Bh6%2Fed7YyhCeHNFTFOhOTJwj3zgr3f2KVzf1cDTArQklXAfGWVTjH4UrPuxcxV8GiteJS%2FScYhfZbIXuFDZb33Lh0WVHl7ePOfgH0M9FTZSIb&portalId=6888762) [![Amazon Filters Logo](https://www.amazonfilters.com/hubfs/amz01/Global/Logos/amazon_filters_logo_color.svg) ](https://www.amazonfilters.com) ![Search icon](https://www.amazonfilters.com/hubfs/amz01/Global/Icons/search_icon_large.svg) Products [All products](https://www.amazonfilters.com/products) [Filter cartridges & capsules](https://www.amazonfilters.com/products/filter-cartridges-and-capsules) [Filter housings](https://www.amazonfilters.com/products/filter-housings) [Custom filter housings](https://www.amazonfilters.com/products/custom-filter-housings) [Retrofits](https://www.amazonfilters.com/products/replacement-retrofit-filters) [OEM](https://www.amazonfilters.com/products/oem-filters) Applications [Pharmaceuticals and healthcare](https://www.amazonfilters.com/industry/pharmaceutical-filters) [Energy](https://www.amazonfilters.com/industry/energy/) [Water](https://www.amazonfilters.com/industry/industrial-water-filtration) [Food and beverage](https://www.amazonfilters.com/industry/food-and-beverage-filtration) [Chemicals & coatings](https://www.amazonfilters.com/industry/chemical-filters) [Case Studies](https://www.amazonfilters.com/case-study) Company [About Us](https://www.amazonfilters.com/about-us) [Compliance](https://www.amazonfilters.com/compliance) [Contact](https://www.amazonfilters.com/contact-us) [Careers](https://www.amazonfilterscareers.com/) [News](https://www.amazonfilters.com/company-information/news) Resources [Blog](https://www.amazonfilters.com/blog) [Resources](https://www.amazonfilters.com/resources) [Application Notes Library](https://www.amazonfilters.com/application-notes/) [Sustainable Polypropylene](https://www.amazonfilters.com/renewable-polypropylene-p) [ Talk to Sales ](https://cta-service-cms2.hubspot.com/web-interactives/public/v1/track/click?encryptedPayload=AVxigLL0Oq4lAJH9H08QO8yJnKOTdE7ZJ1dhnK%2BQrtluhANRS%2BeIZYDyaxLqPwrngRYLo%2B9fsdYVk6P6PEstK%2FUhtwJGdY20B0vzkGf4dwdp6TPKqjutDLD7QyjnLHzlPVxiQ%2B7AlmYkM%2BQ6Um8WgwHEtAnSnBv5PFvYevdyVlcVkj4mvdClOBE%2BMMnPWj3aYKU%3D&portalId=6888762) [ Get a Quote ](https://cta-service-cms2.hubspot.com/web-interactives/public/v1/track/click?encryptedPayload=AVxigLJROGIbyd30Lwhh%2FYtr45fh49c69UGdbjroNByqjaHkwQnD1dJegkKPeUL5Ed3mtwVjwJmuPIFOAuo%2Bh6%2Fed7YyhCeHNFTFOhOTJwj3zgr3f2KVzf1cDTArQklXAfGWVTjH4UrPuxcxV8GiteJS%2FScYhfZbIXuFDZb33Lh0WVHl7ePOfgH0M9FTZSIb&portalId=6888762) [+44 (0) 1276 670600](tel:+44%20(0)%201276%20670600) Case study # Fast-track replacement pre-filtration system for sulphate reduction plant (SRP) ![](https://www.amazonfilters.com/hubfs/case-studies/tag-icon@3x.svg) Oil & Gas [Download PDF](https://www.amazonfilters.com/case-study/fast-track-replacement-prefiltration-system#openFormModal) ![](https://www.amazonfilters.com/hubfs/case-studies/close.svg) #### Product Process Internals #### Client Floating Production, Storage  & Offloading Facility (FPSO) #### Application Seawater membrane protection #### Sector Oil & Gas ## The problem Process engineers on the FPSO had concerns over the performance of membrane pre-filtration on their onboard [sulphate reduction plant](https://www.amazonfilters.com/application-notes/supaspun-kilbac) (SRP). Filter cartridge change-outs were being done every two-three days, and each housing took 24 hours to execute a change of cartridges. Aside from the vast cost of all the filter cartridges, the operational challenges posed by such frequent and lengthy cartridge replacements were significant. Further investigation revealed a number of serious issues. The filter housings were undersized for the task in hand, resulting in a very high flux rate for seawater service which is guaranteed to lead to shorter filter life. The filter internal assembly did not adequately support the cartridges as they should have done. This was limiting the maximum differential pressure at which the cartridges could be operated. It was well below their intended dirty values, resulting in underutilised cartridge dirt holding capacity. Due to inadequate internals design, some cartridges would inevitably rupture, necessitating disassembly of the internals and manually cleaning out of the cartridge debris on each cartridge change-out. ## The solution Our solution was to supply replacement internal assemblies which could be bolted in to replace the existing ones. As well as supporting the cartridges properly, it was also possible to increase the number of cartridges fitted by better arrangement, resulting in a **20% increase in filtration area**. Delivered ahead of schedule, the client was able to fit the replacement internals with no modifications to the filter vessels required. ![Super duplex internals being taken out of its crate](https://www.amazonfilters.com/hubfs/Super%20Duplex%20Internals%202.jpg) ## The results The improvements were dramatic. Our solution reduced filter cartridge change-out frequency from **two-to-three days to two weeks**, with change-out time itself cut from 24 to just five hours. Alongside using our [filter cartridges](https://www.amazonfilters.com/products/filter-cartridges-and-capsules) at a cheaper unit price than the original fitted ones, the solution delivered a **90% reduction in cartridge spend**, paying back the capital investment in under a month. At the same time, maintenance hours were reduced as far as possible given the constraints of the poorly designed original housings. ## Let's **get started** We'll make sure you're getting the best out of your filtration system [ Talk to sales ](https://www.amazonfilters.com/talk-to-sales) Applications - [Pharma and healthcare](https://www.amazonfilters.com/industry/pharmaceuticals-and-healthcare) - [Energy](https://www.amazonfilters.com/industry/energy/) - [Water](https://www.amazonfilters.com/industry/water-filtration) - [Food and beverage](https://www.amazonfilters.com/industry/food-and-beverage) - [Chemicals and coatings](https://www.amazonfilters.com/industry/chemicals-coatings) Products - [All products](https://www.amazonfilters.com/products) - [Filter cartridges & capsules](https://www.amazonfilters.com/products/filter-cartridges-and-capsules) - [Filter housings](https://www.amazonfilters.com/products/filter-housings) - [Customised filter housings and skids ](https://www.amazonfilters.com/products/customised-filter-housing-and-skids) - [Retrofits](https://www.amazonfilters.com/replacement-retrofit-filters) - [OEM](https://www.amazonfilters.com/industry/oem-filters)   Legal - [Privacy policy](https://www.amazonfilters.com/legal/privacy-policy) - [Copyright](https://www.amazonfilters.com/legal/copyright) - [Trademark](https://www.amazonfilters.com/legal/trademark) - [Disclaimer](https://www.amazonfilters.com/legal/disclaimer) - [Conditions of sale](https://www.amazonfilters.com/legal/conditions-of-sale) About - [About us](https://www.amazonfilters.com/about-us) - [Global network](https://www.amazonfilters.com/our-global-network) - [Careers](https://www.amazonfilters.com/company-information/careers) - [Compliance](https://www.amazonfilters.com/compliance) - [Blog](https://www.amazonfilters.com/blog) - [News](https://www.amazonfilters.com/company-information/news) - [Contact us](https://www.amazonfilters.com/contact-us) Contact Amazon Filters Ltd. Albany Park Estate, Frimley Road Camberley, Surrey GU16 7PG, England [+44 (0) 1276 670600](tel:%3Cp%3EContact%3C/p%3E%20%3Cp%3EAmazon%20Filters%20Ltd.%3Cbr%3EAlbany%20Park%20Estate,%20Frimley%20Road%3Cbr%3ECamberley,%20Surrey%3Cbr%3EGU16%207PG,%20England%3C/p%3E) ![Amazon Filters Footer Logo (Grey)](https://www.amazonfilters.com/hubfs/amz01/Global/Logos/amazon_filters_logo_grey.svg) ©2026 Amazon Filters Ltd. All rights reserved .   [ Cookie Settings ](https://www.amazonfilters.com/case-study/fast-track-replacement-prefiltration-system#) Website by [Blend](https://www.blendb2b.com/) ![](https://px.ads.linkedin.com/collect/?pid=2495516&fmt=gif) ```json { "@context" : "https://schema.org", "@id" : "https://www.amazonfilters.com/case-study/fast-track-replacement-prefiltration-system#webpage", "@type" : "WebPage", "description" : "We helped an FPSO make savings by replacing internal assemblies – reducing cartridge change-out time and maintenance hours. 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Change-out time cut from 24 to five hours. 90% reduction in cartridge spend with payback period under one month." } ```