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Hydro Testing Corrosion Inhibitor RXSOL 4000 is a multicomponent, multifunctional formulation which prevents corrosion, microbiological growth in single product treatment programme. Inhibitor, corrosion, multicomponent, multifunctional: For prevention of corrosion and microbiological growth in water flood systems during hydrostatic testing and other applications.
PERFORMANCE:
CORROSION: Effectively prevents corrosion due to Carbon Dioxide, inorganic salts, dissolved oxygen & Hydrogen sulphide contamination from sour fluid or bacterial action. The inhibitor acts as a cathodic polarizer
MICROBIOLOGICAL GROWTH: Effectively prevents the metabolic function necessary for reproduction of the bacteria cell. Successfully prevents anaerobic/aerobic and sulphate reducing bacteria.
Hydro Testing Corrosion Inhibitor RXSOL can be fed directly or through chemical doses pump. Doses may vary with the quality of water to be treated and the residence time of the water in the system.
Actual consumption is determined under operating conditions.
Hydro Testing Corrosion Inhibitor RXSOL 4000 dosage levels typically are 500ppm for hydrotest operations and between 1000- 4000 ppm when used as a packer fluid inhibitor. The exact dose rate for a specific job would depend on the environment and fluid that the chemical was being deployed into. We are happy to advise on this if required.
Corrosion inhibitor shall be dosed in the displacement water piping at the suction of main pump/ booster pump
Dose 2 to 3 ltr per 100 ltr water.
Contact time: Minimum 24 hours for effective passivation + biocidal effect
Temperature: Ambient to 50°C (higher temp improves kinetics but not essential)
Mixing: Ensure thorough circulation to distribute inhibitor uniformly
Water quality: Ideally should be low hardness and low chloride (<50 ppm Cl⁻ preferable)
Additional points to take care:
Our Hydro Testing Corrosion Inhibitor was successfully deployed during the pressure testing. The product ensured corrosion-free shutdown and eliminated the need for post-test internal pipe cleaning.
Used in pre-commissioning hydrotest of large-diameter pipelines carrying high-pressure condensate. Our corrosion inhibitor prevented microbiological growth and pitting in both stagnant and recirculating systems.
Effect of Micro – Organisms:
All water used for Hydro-testing generally contains iron bacteria and sulphate reducing bacteria. The iron bacteria attack to the pipe wall mostly at 6 o’clock location and produces tubercle of iron oxide by metabolic action. Below the tubercles, sulphate reducing bacteria grows and generates H2S from sulphate of water. The H2S goes on reacting with iron forming Fe2S. This is combined with auto catalytic formation of HCI under tubercle and lead to deep pitting and perforation of the pipe wall. The mechanism is more pronounced under stagnant condition and is relevant of Hydrostatic testing.
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Hydro Testing Corrosion Inhibitor RXSOL 4000 is a cocktail of water soluble chemicals designed to protect pipelines from corrosion during hydrostatic testing and mothball operations. Hydro Testing Corrosion Inhibitor RXSOL 4000 incorporates oxygen scavenger to rapidly remove oxygen, biocide to prevent Microbial Influenced Corrosion (MIC), together with a film forming corrosion inhibitor to combat acid (low pH) corrosion. Hydro Testing Corrosion Inhibitor RXSOL 4000 represents a single stage treatment chemical treatment, for hydrotest and mothball operations. Hydro Testing Corrosion Inhibitor RXSOL 4000 is a completely soluble product in fresh water, seawater and in most oilfield brine solutions. It is, therefore, suitable for use in water injection systems (which have no mechanical deaeration), hydrotest and mothball operations, and as a packer fluid. Hydro Testing Corrosion Inhibitor RXSOL 4000 has been used in a large number of major projects in the North Sea, Latin America and South East Asia.
Risk of serious damage to eyes. In case of contact with eyes, rinse immediately with plenty of water & seek medical advice. Wear suitable gloves and eye / face protection
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Chemical for conditioning of hydro test water i.e. blend of corrosion inhibitor, one Oxygen scavenger, one scale inhibitor & one biocide
The major factor which contributes to the corrosion in hydro-static test water is the dissolved oxygen and dissolved solids do not have much impact on the corrosion rate except the chloride content. The presumptions like not using the corrosion inhibitor if the water is not with high mineral content could beM disastrous as in fact any corrosion process, even a very mild one, will be accompanied by the set up of galvanic cells and formation of corrosion products deposits. Such environment makes the conditions ideal for the corrosion process to continue at accelerated rate once the process fluid will be run through the line.
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