Solar Thermal System Inspection Checklist
This solar thermal system inspection checklist ensures compliance with SRCC (Solar Rating and Certification Corporation) OG-300 system certification standards, ASHRAE 93 methods of testing solar collectors, IAPMO plumbing code requirements, and local building and plumbing regulations. Designed for solar thermal technicians and building facility managers to inspect solar water heating and process heat systems.
- Industry: Renewable Energy
- Frequency: Monthly
- Estimated Time: 30-45 minutes
- Role: Solar Thermal Technician / Facility Manager
- Total Items: 30
- Compliance: SRCC OG-300 Solar Thermal System Certification, ASHRAE 93 Testing Methods for Solar Collectors, IAPMO Uniform Plumbing Code Solar Thermal, ASME B31.3 Process Piping, OSHA 29 CFR 1910.147 Lockout/Tagout
Solar Collector Inspection
Physical condition and glazing assessment.
- Glazing intact with no cracks or delamination?
- Absorber plate shows no corrosion or coating failure?
- Collector frame and mounting hardware secure?
- No shading or debris on collector surfaces?
- Collector Condition Photo
Heat Transfer Fluid System
Fluid quality and system pressure checks.
- Heat transfer fluid level in expansion tank correct?
- Heat transfer fluid pH and freeze protection acceptable?
- System operating pressure within design range?
- Pressure relief valve operational and not weeping?
- No fluid leaks observed at fittings, valves, or collectors?
Pumps and Controls
Circulation pump and differential controller operation.
- Circulation pump operating correctly?
- Differential controller set points correct and active?
- Temperature sensors functioning (collector and tank)?
- Flow rate within design specification?
- Check valve preventing thermosiphoning at night?
Storage Tank and Distribution
Hot water storage and delivery system check.
- Storage tank achieving design temperature?
- Sacrificial anode in storage tank checked?
- Pipe insulation on supply and return lines intact?
- Backup heating element operational?
- Tank temperature maintained above 140F to prevent Legionella?
Safety Systems
Overheat protection and safety device checks.
- Overheat protection (dump valve or heat exchanger) functional?
- T&P relief valve on storage tank installed and tagged?
- Expansion tank pre-charge pressure correct?
- Freeze protection strategy confirmed active?
- Lockout/tagout procedures followed for any maintenance?
Performance and Documentation
System performance documentation and log update.
- Solar fraction meeting design targets?
- Maintenance log updated?
- SRCC certification label visible on collectors?
- Next scheduled service date recorded?
- Inspection Notes
Related Renewable Energy Checklists
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- Utility-Scale Solar Farm O&M Inspection Checklist
- Solar + Battery Energy Storage System (BESS) Checklist
- Agrivoltaic / Dual-Use Solar Site Inspection Checklist
- Solar Carport/Canopy Inspection Checklist
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Why Use This Solar Thermal System Inspection Checklist?
This solar thermal system inspection checklist helps renewable energy teams maintain compliance and operational excellence. Designed for solar thermal technician / facility manager professionals, this checklist covers 30 critical inspection points across 6 sections. Recommended frequency: monthly.
Ensures compliance with SRCC OG-300 Solar Thermal System Certification, ASHRAE 93 Testing Methods for Solar Collectors, IAPMO Uniform Plumbing Code Solar Thermal, ASME B31.3 Process Piping, OSHA 29 CFR 1910.147 Lockout/Tagout. Regulatory-aligned for audit readiness and inspection documentation.
Frequently Asked Questions
What does the Solar Thermal System Inspection Checklist cover?
This checklist covers 30 inspection items across 6 sections: Solar Collector Inspection, Heat Transfer Fluid System, Pumps and Controls, Storage Tank and Distribution, Safety Systems, Performance and Documentation. It is designed for renewable energy operations and compliance.
How often should this checklist be completed?
This checklist should be completed monthly. Each completion takes approximately 30-45 minutes.
Who should use this Solar Thermal System Inspection Checklist?
This checklist is designed for Solar Thermal Technician / Facility Manager professionals in the renewable energy industry. It can be used for self-assessments, team audits, and regulatory compliance documentation.
Can I download this checklist as a PDF?
Yes, this checklist is available as a free PDF download. You can also use it digitally in the POPProbe mobile app for real-time data capture, photo documentation, and automatic reporting.