— Inspection #19
regenerative thermal oxidizer
May 13, 2026, 8:33:17 PM · 16110ms · 6851 tokens · card #2
Overall severity
LOW— Summary
Overall exterior view of CleanSwitch RTO appears structurally intact, but technician reports a new rumble during damper switchovers and fresh light-tan dust accumulating around the lower inlet duct flange — suggesting a developing duct leak or seal degradation not fully resolvable from the photo alone.
— Recommended action
Inspect inlet duct flange and gasket for leakage; check internal damper hardware/seals for looseness during switchover; sample dust to determine if it is process residue or ceramic media fines.
— Observations (4)
NONE
Unit exterior, access platform, ladder, and control enclosure are in place with no visible structural damage or corrosion.
confidence 90%
LOW
Inlet ductwork emits a new audible rumble during damper switchovers per technician — consistent with loosened internal damper hardware, gasket flutter, or developing duct flange leak.
confidence 70%
LOW
Fresh light-tan dust accumulation reported around lower duct flange indicates probable flange/gasket leakage of process exhaust or media fines escaping past a seal.
confidence 75%
NONE
No leak plume, panel damage, or insulation loss visually evident in the photo; defect signature is primarily acoustic and particulate.
confidence 80%
— Classification
- part
- complete unit with ductwork and access platform
- type
- regenerative thermal oxidizer
- view
- exterior side view
- family
- air pollution control
- reason
- Large gray industrial enclosure with overhead exhaust ducting, gas piping manifolds, and access platform/ladder typical of an RTO (regenerative thermal oxidizer) installation outside a facility.
- source
- context
- confidence
- 0.8
- taxonomy_type_id
- null
- taxonomy_family_id
- null
— Retrieved examples
#1972#1797#1985#1732#1987
Top-K examples from the knowledge corpus used as visual context for this inspection.
— Metadata
- image_uri
- s3://luthier-assets/inspections/1/220d2bab-9685-41fe-b34c-37c9d6b4a0db-0004-eb9404a9f972743c.png
- model_version
- claude-opus-4-7
- prompt_template
- inspect-v2
- tokens (in/out)
- 5779 / 1072
- cache (creation/read)
- 0 / 0
- latency
- 16110 ms