Denholm Environmental Logo
  • Call us on: +44 (0) 1467 629 933
  • Email us
  • Services
    • Close
    • Services
    • Oilfield
      • Close
      • Oilfield
      • Chemical Decontamination
      • Cargo Oil & Slop Tank Cleaning
      • Process Plant, Equipment & Pipework Cleaning
      • Caisson Cleaning & CCTV Inspection
      • Norm Decontamination & Disposal
      • Crude Oil Storage Tank Cleaning
      • Dry Ice Cleaning
    • Industrial
    • Water Jetting
    • Liquid Waste Management
  • Equipment Hire and Sales
    • Close
    • Equipment Hire and Sales
    • 57 LPM HP Jetting Unit
    • 79 LPM Jetting Unit
    • 18 LPM UHP Jetting Unit
    • Hot Wash Units
    • 75-100 HP Vacuum Units
    • Premier Vacuum Transfer System
    • Hydraulic Molex Pumps
    • NESL Suction Filter
    • NESL Tank Sweep Packages
    • Graco Hydra-Clean Pressure Wash Unit
    • Diaphragm Pumps
    • Hydraulic Dozers
    • Variable High Pressure Wash Units
    • Diesel Driven Hydraulic Power Pack
    • Pit Cleaning Package
    • Mud Skips
    • Vacuum Rated Filter Units
    • Hand Help HP Diver Dump Lance
    • Pneumatic Hose Spooler
    • Overboard Chutes
    • Oil Skimmer
  • Accreditations
  • Contact Us
    • Close
    • Contact Us
    • Contact Us Invergordon
    • Contact Us Inverurie
    • Contact Us Grangemouth
  • Careers

Chemical Decontamination

  1. Denholm Environmental
  2. Services
  3. Oilfield
  4. Chemical Decontamination

Zyme-Flow® Decon Technology is the worldwide leader in decontamination of hydrocarbon process equipment for entry, inspection and maintenance including hotwork. The exclusive process uses a proprietary chemistry and application to achieve vessel entry in 8-12 hours. This unparalleled process prepares equipment for entry by simultaneously de-oiling while eliminating pyrophoric iron sulphides (FeS), Hydrogen sulfide (H2S), benzene, and other explosive gases (LELs).


Offshore: The Zyme-Flow® Process is superior to nitrogen purging and traditional chemical cleaning in that it has a very small equipment and personnel footprint and shortens the process time drastically.

Denholm Environmental, as their UK Licensee, have completed hundreds of decontamination scopes across UK terminals, refineries and platforms as well as supporting the franchise overseas.  

Service Highlights
  • Offers a fixed DFPV timeline.
  • Eliminates the need for repeat entries / purges per vessel or process
  • Substantial reduction in POB with as little as 3 personnel per shift
  • Vessel Entry in 8-12 hours (see case studies)
  • Trusted globally
  • Over 200 Turnarounds delivered per year across the globe as a Zymeflow brand
  • Faster and safer vessel entry
  • Reduced footprint of required equipment
Typical applications
  • Process Vessels
  • Separators
  • Pipework
  • Heat exchangers
  • Coalescers
  • Desalters
  • Vacuum Units
  • Hydro Treater Units
  • Sulphur Units
  • Columns, FFCU, CDU DHT Treatment and Flare Units
Key Equipment
  • Steam Boiler and/or access to site steam
  • Chemical Dosing pump
  • H2S monitoring package
  • Duplex Basket Filter sets

Denholm Environmental is a Denholm Energy Services company:

Services
  • Asset Maintenance
  • Decontamination
  • E & I
  • Energy Logistics
  • Fabrication
  • Industrial Plant Hire
  • Industrial Valves
  • Metrology and Calibration
  • Precision Engineering
  • UHP/HP Cleaning
Companies
  • Denholm Engineering
  • Denholm Zholdas
  • Denholm Yam
  • Petrasco Energy
  • Relay Engineering
  • Relay Zholdas
  • SDL Nobel
  • SST NDT
Locations
  • UK
  • Caspian
  • Middle East
  • USA
Corporate Responsibility
  • Our Approach
  • Health, Safety & Environment
  • Corporate Governance
  • Modern Slavery Statement
  • Code of Conduct
  • Supply Chain Code of Conduct
About Us
  • Overview of the Group
  • Locations
  • Our History
  • Mission, Vision & Strategy
  • Culture & Values
  • People
  • Denholm Environmental
  • Search
  • Privacy Policy
  • Accreditations
  • Sitemap
Telephone: +44 (0) 1467 629 933 Email: enquiries@denholm-enviro.com
© Denholm Energy Services 2025. All rights reserved.

Website by Gecko Agency