Cleansol prepares, treats, rinses, verifies and documents stainless steel process systems and equipment in the field, to the project specification.
The Buyer Problem
Fabrication and installation leave free iron, weld heat tint, oils and shop debris on stainless steel surfaces. Left in place, these contaminants compromise the passive layer the metallurgy depends on and raise findings during commissioning and quality review.
Field passivation of an installed system is a different scope from small-part or shop passivation. Circuits, temporary connections, chemistry handling, rinse water and verification all have to be planned around the installed configuration and the project schedule.
Systems Covered
When It Is Required
And When It Is Not
Passivation is not required on every system. On a conventional carbon steel chilled water loop it is generally not applicable, and we will tell you so. Recommending a service a system does not need costs more than the service is worth.
Cleansol Scope of Work
Oils, debris and fabrication residue are removed so the passivation chemistry reaches the metal surface.
Citric or nitric treatment is selected with the customer specification, metallurgy and site conditions in view.
Time, temperature and concentration are controlled and recorded through the treatment cycle.
The system is rinsed to the criteria defined in the project documents, with rinse water managed on site.
Surfaces are verified using the test methods the specification calls for, and results are recorded.
Standards and Limits
Procedures reference ASTM A967/A967M, ASTM A380/A380M and ASME BPE as applicable to the customer specification and current technical review. Passivation improves corrosion resistance of a properly prepared surface. It does not prevent all corrosion, and it does not by itself establish regulatory compliance.
Scope Alignment
Procedures, chemistry, temporary equipment, circulation, monitoring, verification testing in scope, and documentation.
System access, utilities, water source and disposal path approvals, and the acceptance criteria in the project documents.
Specification, metallurgy confirmation, and resolution of design questions raised in constructability review.
Temporary connection points, isolation, and system readiness at the agreed schedule milestones.
Information We Need Early
Site Considerations
Equipment and Temporary Systems
Cleansol configures modular pumping, heating, filtration and instrumentation around each circuit. Hygienic pumps, valves and instrumentation are used in the temporary process equipment, and key operating variables can be displayed, monitored and recorded through the treatment cycle.
Verification and Acceptance
Verification methods follow the project specification. Depending on the scope, that can include the test methods defined in the referenced standards and the customer quality plan, with results recorded against the acceptance criteria in the project documents.
Turnover Deliverables
The procedures the work was executed against.
Time, temperature, concentration and chemical documentation.
Test results recorded against the acceptance criteria.
Assembled in the closeout format agreed before execution.
Representative Project
Circuit planning from the project P&IDs, citric passivation with controlled time and temperature, rinse to specification and verification testing. Turnover package delivered with procedures, operating logs and test results in the customer closeout format.
Related Services
Next Step
Send the metallurgy, the specification section, the system list and the schedule window. We will tell you whether passivation is required, identify missing scope inputs and recommend the appropriate next step.
We review project inquiries promptly and follow up as quickly as your project timeline allows.
