Overview
Why Static-Dissipative Coatings Require a Grounding System
A dissipative layer can provide a controlled electrical path only when continuity, grounding points, substrate condition and the complete layer build are designed together.
Technical Articles
Why Static-Dissipative Coatings Require a Grounding System
A dissipative layer can provide a controlled electrical path only when continuity, grounding points, substrate condition and the complete layer build are designed together.
01
Industry background
A dissipative layer can provide a controlled electrical path only when continuity, grounding points, substrate condition and the complete layer build are designed together. Verification includes the approved electrical test method, representative locations, grounding continuity and records after repair. Coating selection alone cannot correct an incomplete or unverified grounding design.
02
How the problem develops
Corrosion requires an electrochemical path involving the substrate, moisture or another electrolyte, oxygen or an oxidising species and local differences in exposure. Welds, edges, gaps, deposits and damaged coating areas often remain wet longer and become priority locations.
03
Common field signs
Look for rust staining, underfilm spread, blistering, deposits, pitting, changes at welds, drainage points and supports, and local damage caused by maintenance or impact. Separate cosmetic change from loss of adhesion or substrate section.
04
Factors that change the risk
The medium and concentration, temperature, wet-dry cycle, immersion, ultraviolet exposure, salts, cleaning chemicals, flow, abrasion, substrate and existing system all change the corrosion risk.
05
Inspection and diagnosis
Define exposure zones, document the existing system, test representative adhesion, check soluble contamination when relevant, and inspect weld profile, sharp edges, crevices, low points and inaccessible backsides.
06
Solution options
The response may combine drainage improvement, design correction, cleaning, removal of unstable material, local metal repair, stripe coating and a barrier system selected for the exposure.
07
Material-selection principles
Match the complete primer, intermediate and finish build to the substrate and service environment. Compatibility, recoat interval, cure, application method and maintainability are as important as chemical-resistance wording.
08
Surface preparation
Accept the substrate before opening material. Remove oil, salts, dust, loose material and incompatible residues; create the specified cleanliness and profile; repair defects; and protect prepared surfaces from flash rust, condensation and recontamination.
09
Application controls
Confirm material identity, batch, mixing, induction or thinning rules and usable time. Control air and substrate conditions, ventilation, wet or dry film build, stripe coats, overlaps, recoat windows and curing. Difficult geometry is coated from more than one direction. Verification includes the approved electrical test method, representative locations, grounding continuity and records after repair. Coating selection alone cannot correct an incomplete or unverified grounding design.
10
Quality control
Use an inspection plan with hold points for preparation, environment, mixing, each layer, representative thickness, continuity and cure. Record nonconformities and corrections so the final dossier describes what was actually applied.
11
Common mistakes
Frequent errors include coating contamination, trapping moisture, keeping an unsound old layer, applying one heavy pass, missing edges and backsides, exceeding the recoat window, confusing touch dry with full cure and returning equipment to service too early.
12
Maintenance strategy
Create baseline photographs and identify high-risk details. Reinspect the same locations after operating cycles or scheduled shutdowns, clean surfaces before judging them and repair local damage while the surrounding system is still sound.
13
Scope and limitations
A generic corrosion coating cannot be specified from the industry name alone. Unknown process media, active leakage, structural loss, contaminated concrete or inaccessible crevices require project-specific assessment.
14
Project summary
A reliable result comes from matching the real operating condition to a complete system, preparing the substrate consistently, controlling application and curing, and maintaining traceable records. Product selection is the consequence of that review, not the starting point.
Related technical content
Related DAYU-X products
Technical review
References
Project takeaway
DAYU-X
Contact our technical team with the equipment, substrate, temperature and operating condition.