Passivation and Corrosion Remediation Contractor in Mississippi

Yes, across the Delta and the Gulf Coast: process equipment, tanks, piping and the structure supporting them. Work is to ASTM A967 with cleaning per ASTM A380 and the record carries measured values. On chilled plants we survey the structure as well as the equipment, because that is usually where the problem actually is.

Because they are in contact and water is always present. Stainless is more noble than carbon steel and galvanized steel, so where they touch with an electrolyte present the less noble metal corrodes preferentially. Your stainless is protected at the expense of the support holding it, and a cold, washed, humid plant supplies the moisture continuously.

No, and this is the most important limitation to be clear about. Passivation restores a stainless surface. It cannot help a carbon steel support that is being consumed by contact with that surface. Plants that passivate on a schedule while the structure around the equipment continues to deteriorate are treating the wrong problem.

Because flaking, pitted, layered corrosion product is porous. It holds moisture and organic soil, it cannot be cleaned to a verifiable condition, and in a plant under continuous inspection it is in the same room as exposed product. It is a harbourage site that also happens to be holding equipment up.

In a wet chilled area, generally the same material as what they carry, or isolated from it. Specifying supports in stainless on new work costs little relative to replacing them in a running plant, and it removes the couple entirely. Where existing carbon steel structure has to stay, isolating the joint so the metals are not in electrical contact is the alternative.

Because washdown fills them and nothing empties them. A hollow section with an open end takes water in during cleaning and holds it indefinitely in a cold room where nothing dries. The corrosion happens where it cannot be seen, and the first visible sign is usually staining at a joint or a section failing under load.

Free iron embedded during fabrication, from grinding wheels, wire brushes or tools shared with carbon steel. The particles rust and hold moisture and chloride against the surface, so a cosmetic blemish becomes a pit initiation site. Cleaning and passivation removes it; segregating consumables by material stops the next batch arriving the same way.

Event-driven rather than scheduled. After fabrication or significant modification, after work that could introduce free iron, and when inspection or corrosion evidence calls for it. A fixed interval with no improvement between treatments usually means the cause has not been diagnosed, and in this state that cause is frequently structural rather than metallurgical.

Barely. At 6.81 cents per kilowatt-hour against a national average of 8.13 (EIA, 2024), heating a passivation solution is a short one-off load. The cost that matters is downtime, which on a year-round plant means fitting work into sanitation windows rather than taking a line out during production.

Use the form on this page or call 201-450-8280. Tell us what is corroding and what it is made from, whether the attack is on equipment or on the structure supporting it, and whether the area is permanently cold and washed down. Photographs are genuinely diagnostic, particularly of contact points and mounting details.

With continuous welds rather than stitch welds, sealed ends on tubular members, ground and passivated weld areas and no crevices at joints, so that the frame has no place to hold water and sanitiser. Framework built with stitch welds corrodes at every gap.

Anodised aluminium loses its anodising under chlorinated sanitisers and then corrodes rapidly, especially when coupled to stainless, and plastics are fine themselves but trap water against the metal they touch. Both are reviewed in a corrosion survey for what they do to the stainless around them.

By tapping and, where possible, by internal inspection, because a hollow section can be perforated from inside while the outside looks intact, and by checking the base where water collects. Suspect sections are replaced with solid or sealed members rather than repaired.

With solid or sealed legs on adjustable feet that drain, clearance from the floor for cleaning, and isolation between the leg and any dissimilar metal at the floor, because feet stand in the wettest, most chloride-laden water in the plant. Legs are the first structural members to fail.

As flaking rust over product zones, as harbourage sites in corroded joints, and as a maintenance failure indicating the plant's sanitary design is deteriorating. Auditors read corroded structure as a food safety condition, not a maintenance one.

By passivation with citric or nitric acid after thorough cleaning, which dissolves the free iron and lets the passive film form over the clean surface, followed by verification testing. New equipment that was fabricated in a shop that also works carbon steel commonly needs this before service.

Peracetic acid at intervention concentrations is less damaging to the passive film than chlorine, but at high concentration and temperature it attacks welds and crevices, and its acetic acid component corrodes carbon steel nearby. Dosing points and drains are inspected for it specifically.

After fabrication or repair, and when inspection shows free iron staining or surface change, rather than on a calendar. Equipment in a well-run plant may need it rarely; equipment in heavy chlorinated washdown more often.

By walking the plant during and after washdown, inspecting supports, equipment, fixings and structure for the mechanism at each location, and recording it. The survey separates galvanic, crevice, chloride and free-iron findings, which have different fixes.

Cold, humid overhead steel condenses and corrodes, and it drips onto product. Overhead condensation control and coating maintenance are part of both corrosion and food safety programmes.

Stainless of adequate grade, matched to the components they join, with isolation where they contact other metals. Zinc-plated fasteners in a wet plant corrode within months and are a common source of rust staining.

Yes, during sanitation windows or weekends on cleaned, accessible equipment, with the chemistry contained and rinsed before production. Product-contact surfaces treated in place are handled under the plant's SSOP.

Neutralised and discharged under the plant's pretreatment permit, with the volume planned in. Protein plants have pretreatment capacity but not always spare drainage during a sanitation shift.

Standing water on floors and equipment is where galvanic and crevice corrosion run continuously, and drainage that removes water also removes the corrosion cell. Drainage is a corrosion control.

The supports and structure around the stainless equipment. Isolating or replacing them stops the galvanic attack that is consuming them and removes the rust that contaminates the plant.