Inspection and Test Plan for Method Statement: Chemical Flushing, Cleaning, and Passivation of Chilled Water (CHW) Closed-Loop Networks
AI-assisted inspection and test plan connected to a method statement, with PDF and Excel export.
More than a static template
Unlike a downloadable Word or PDF template, this ITP is an AI-assisted editable starting point directly connected to its method statement. Every inspection activity, hold point, and acceptance criterion is structured and ready to adapt to your project.
- AI-assisted customization — Tailor inspection activities and acceptance criteria to your specific project scope.
- Linked method statement — This ITP is connected to the corresponding method statement describing the work sequence.
- Multiple export formats — Download as a formatted PDF or editable Excel spreadsheet.
- Editable starting point, not a final document — Review and verify all content against your project specifications and standards before use.
What you can customize
When you save this ITP to your account, every inspection row becomes editable. You can add, remove, or modify:
- Inspection activity — Description of what is being inspected.
- Inspection type — Hold point (H), Witness point (W), Review (R), or Monitor (M).
- Responsibility — Contractor, subcontractor, engineer, or client.
- Frequency — How often the inspection occurs.
- Acceptance criteria — Referenced standard or specification requirement.
- Records — Forms, test reports, or checklists required as evidence.
Why this ITP is used
To verify that the CHW system is cleaned, chemically conditioned, and compliant with technical and environmental requirements before commissioning.
Who uses this inspection and test plan
Main Contractor, Water Treatment Specialist, Engineer/Consultant, Environmental Officer, and QA/QC Engineer.
When this ITP is prepared and submitted
Applied from pre-start through dynamic flushing, chemical cleaning, passivation, sampling, and final acceptance.
Who receives or approves this ITP
Engineer/Consultant for approval and witnessing.
Inspection scope
Documentation review, isolation checks, flow/velocity verification, chemical dosing control, discharge compliance, inhibitor residual/pH control, and lab analysis.
Typical hold, witness, and review points
Pre-start readiness (Hold), Acid/chelant cleaning start (Hold), Inhibitor dosing (Witness), Sampling and lab dispatch (Hold), Final acceptance (Witness/Hold).
Typical inspection records
Checklists, flow logs, dosing logs, neutralization and discharge logs, calibration certs, chain-of-custody, and accredited lab certificates.
Important approval note
This ITP is an AI-assisted editable starting point, not a pre-approved document. Before use on any project, all inspection activities, hold points, and acceptance criteria must be reviewed and approved by the relevant parties (superintendent, principal contractor, or client representative) in accordance with your contract and project quality plan.
Always verify acceptance criteria against your applicable drawings, specifications, and regulatory requirements. Hold points must be confirmed with the relevant authority before work proceeds past that point.
Inspection and test plan
| Activity | Inspection / Test | Acceptance Criteria | Responsibility | Record |
|---|---|---|---|---|
| Review and approval of Method Statement, ITP, and Chemical Submittals | Document review and approval | All documents approved prior to works commencement. | MC/WTS/ENG | Approved MS/ITP; Material Approvals |
| Pre-start walkdown and isolation verification | Checklist and visual inspection | Isolations complete; bypass installed; permits in place; instruments calibrated. | MC/ENG | Pre-Start Checklist; Photos |
| Temporary bypass loop pressure/leak test | Leak test at system cold fill pressure + margin [Verify] | No visible leaks; pressure drop ≤ 5% over 30–60 min. | MC | Leak Test Record |
| Dynamic high-velocity flushing (gross debris removal) | Flow/velocity verification using ultrasonic meter | Velocity ≥ 1.5 m/s or ≥1.5× design flow; Re > 4000 where practicable. | MC/WTS/ENG (Witness) | Flushing Log; Flow Records |
| Strainer inspection and cleaning | DP measurement before/after | Post-clean DP within 10% of baseline. | MC | Strainer Cleaning Log |
| Alkaline chemical cleaning circulation | On-site pH and concentration checks hourly | pH/concentration within supplier limits for specified contact time. | WTS/ENG (Witness) | Chemical Dosing Log |
| Neutralized rinse and discharge control | Effluent pH and turbidity | Discharge pH 6–9; turbidity within permit limit. | MC/EO | Neutralization & Discharge Log; Permit |
| Conditional acid/chelant cleaning (if required) | pH, iron release trend, corrosion monitoring (if available) | Controlled pH within approved range; no abnormal corrosion rate; max contact time not exceeded. | WTS/ENG (Hold) | Acid Cleaning Log; Approval |
| Biocide shock dosing (if specified) | Residual/CT verification (if applicable) | Meets supplier CT requirement. | WTS | Biocide Dosing Log |
| Passivation/inhibitor dosing | On-site pH, inhibitor residual, conductivity | Residual within supplier range; pH within metallurgy target. | WTS/ENG (Witness) | Inhibitor Dosing Log; Test Sheets |
| Final polishing via sidestream filtration | Turbidity checks; filter DP | Turbidity ≤ 5–10 NTU or project limit; stable operation. | MC/WTS | Sidestream Filter Log |
| Sampling and laboratory analysis | Lab results for pH, EC, turbidity, chloride, metals, alkalinity, inhibitor residual, microbiology | All parameters within project/BSRIA limits [Verify]. | QA/QC/ENG (Hold) | Chain-of-Custody; Lab Certificates |
| Final acceptance and demobilization | Walkdown and documentation review | System reinstated; documents complete; ENG acceptance. | MC/ENG | Completion Certificate; Handover Dossier |
This table is a read-only public reference. Download the PDF or Excel version, or customize this ITP to edit it for your project.
Frequently asked questions
Related method statement
This Inspection and Test Plan is associated with the Method Statement: Chemical Flushing, Cleaning, and Passivation of Chilled Water (CHW) Closed-Loop Networks method statement, which describes the step-by-step construction sequence, resources, materials, equipment, safety controls, and environmental controls for this activity.
View the Method Statement: Chemical Flushing, Cleaning, and Passivation of Chilled Water (CHW) Closed-Loop Networks method statement →Continue with related inspection, method statement, article, and checklist resources.
