A stainless-steel description is not a complete materials specification for seawater desalination. For an enquiry referencing BOKAWATER SW-02, original catalog item SW -02, request a configuration-specific schedule tied to the actual service. This guide organizes purchasing evidence; it does not select an alloy, approve chemical compatibility or promise a corrosion-free operating life.
1. Map exposure before comparing material names
FilmTec guidance distinguishes external saline exposure from internal water and chemical exposure. Turn that distinction into a project worksheet. Give separate service identifiers to the intake/feed circuit, concentrate, product water, cleaning connections and external equipment environment. Include normal operation, flushing, shutdown and any approved cleaning case instead of describing the entire package with one seawater label.
For each service ask the designer to declare fluid composition, expected range of temperature and pH, pressure duty, relevant chemicals and periods of stagnation. Mark measured, projected and unknown values separately. Map the proposed component tags to those services, including pumps, valves, piping, fasteners, instrument wetted parts, supports and seals. Record who resolves missing data before the material proposal is accepted.
2. Connect the proposed construction to traceable documents
Request an exact material designation for each listed component, its supplier and the controlled drawing or specification that defines it. Where a lining, coating or nonmetallic part is proposed, ask what substrate, joints and service conditions the proposal covers. Have the responsible designer review the complete assembly, including seals and connections, rather than treating a generic metal name as proof of suitability.
Agree the inspection and traceability package in the purchase order: which material records are required, how they connect to delivered tags or lots, which joining and surface-treatment records are retained, and which inspections are witnessed or documented. Ask who reviews substitutions and repairs. Document the method, scope and acceptance basis of any proposed verification; a material identity check alone does not establish fabrication quality, structural adequacy or future corrosion performance.
3. Preserve an installed baseline and an escalation route
Before handover, reconcile the delivered tags with the approved schedule and record discrepancies. Retain accessible photographs, instrument connections, coating condition where applicable, leak-check records and unresolved items under the agreed inspection plan. Identify site additions and connections supplied by other contractors so the acceptance file describes the installed boundary. Reclamation includes factory and field inspection among its services; the specific checks still require a project agreement.
Request a supplier-approved maintenance record defining inspection locations, intervals, cleaning methods and authorized products for the actual construction. Include how operators report leakage, staining, damaged surfaces or changed service conditions, and who decides whether further inspection or isolation is required. Keep observations distinct from a diagnosed failure cause. Close substitutions and corrective actions in writing, and preserve the original record. Send the exposure worksheet with your enquiry so material review, documentation and site responsibilities appear explicitly in the quotation.
Data to collect before comparing proposals
| Parameter / interface | Unit / format | Why it matters |
|---|---|---|
| Evidence group | Record requested | Decision to close |
| Service boundaries | Feed, concentrate, product, cleaning and exterior tags | Which exposure belongs to each part? |
| Operating envelope | Composition, temperature, pH, pressure and idle cases | Which values remain unconfirmed? |
| Component schedule | Exact designation, supplier and drawing revision | Is the complete assembly identified? |
| Seals and finishes | Materials, substrate and proposed service coverage | Who confirms suitability? |
| Traceability | Required records linked to component or lot | Can delivered parts be reconciled? |
| Fabrication and repair | Joining, treatment and approved change records | Who authorizes deviations? |
| Inspection | Method, extent, witness and acceptance basis | What does each check actually establish? |
| Installed baseline | Photos, leak checks, site additions and open items | Is the final boundary documented? |
| Maintenance response | Instructions, observations and responsible reviewer | How are changes escalated and closed? |
Technical references
- DuPont — FilmTec Technical Manual, 45-D01504-en, Version 20, August 2026 ↗Source checked:
Evidence scope — original English record
Section 3.15, printed pages 109–110: distinguishes external saline exposure from internal water and chemical exposure. Used as general context only. No alloy recommendation, chloride threshold, temperature exemption, pressure limit or service-life claim is transferred to BOKAWATER. The evidence matrix below is original buyer guidance, not a material selection or inspection standard.
- Bureau of Reclamation — Water Treatment Services ↗Source checked:
Evidence scope — original English record
Water Chemistry Modeling and Laboratory and Field Services identify composition, process modeling and factory/field inspection as engineering tasks. Does not prescribe the article's contractual evidence package or certify any supplier construction.
- BOKAWATER — OEM Sea water desalination system, item SW -02 ↗Source checked:
Evidence scope — original English record
Existing OEM item identity only. Mixed generic descriptions and WTY equipment tables do not prove a configuration-specific material schedule, output, corrosion resistance, certification or delivered project result.