NFPA 70B moved from a recommended practice to an enforceable standard in 2023, and Section 7.4 now requires periodic infrared thermography on electrical equipment — with reporting and documentation, not just a photo in a folder. The NETA Maintenance Testing Specifications Table 100.18 gives the delta-T severity ladder that decides what happens next: a 4–15°C rise above a similar component gets planned repair within 30–90 days, a 21–40°C rise gets urgent action within 7–30 days, and anything above 40°C gets shut down immediately. That is the standard. What most plants have is a thermographer running an annual walk with a handheld camera, a stack of unreadable PDF reports, and no way to trend the same hot spot over time or turn a Tier 3 finding into a scheduled work order automatically. Yet the same electrical faults thermography catches — loose lugs, overloaded breakers, drying bushings — accelerate on a scale of weeks once they start. iFactory's Thermography Route Manager makes the program a system, not a folder.
iFactory Thermography Route Manager
Turn Every Hot Spot Into a Graded Work Order — On the Route
Quarterly IR routes on switchgear, motors, and refractory with NETA delta-T grading, image and reference-image capture, and automatic CMMS work orders sized by severity tier.
NFPA 70B
enforceable since 2023
NETA T100.18
4-tier severity ladder
Quarterly
on critical assets
40% load
minimum for valid read
Why an Annual IR Walk Doesn't Meet the Standard Anymore
Electrical degradation in a working plant accelerates on a timescale of weeks once it starts. An annual survey captures a snapshot; a quarterly route captures the trend, which is what the standard now expects and what an insurance loss adjuster will ask for.
Annual Handheld Walk
"Where was this hot spot last quarter?"
Annual IR walk, PDF report filed and never re-opened
No same-asset trend — is this hot spot new or getting worse?
Load conditions during inspection undocumented
Findings dictated to admin, work orders raised days later, if at all
Route Manager
"Every hot spot graded, captured, and worked."
Quarterly IR route on every critical asset, with photo + reference image
Same-asset trend across routes — delta-T history per component
Load percentage captured at the moment of inspection
Work order raised on the route with NETA severity tier and priority
The Assets That Actually Need Thermography
Not every asset benefits equally from IR. The route manager focuses inspection effort where degradation is fast, consequence is high, and IR is diagnostic.
MV Switchgear
11 kV and above breakers, buses, disconnects. Loose lugs and overloaded connections show as delta-T well before an arc-flash event.
Cadence: quarterly, IR window
Transformer Bushings
Bushing terminations and oil-air interfaces. A drying bushing shows as a delta-T pattern that separates it from surrounding equipment.
Cadence: quarterly
MCC / LV Panels
Motor control centers and low-voltage distribution panels — where the majority of thermal exceptions actually live in a plant.
Cadence: quarterly
Motor Terminals
Motor connection boxes, cable terminations, and starter contactors on large-motor auxiliaries. IR catches high-resistance connections early.
Cadence: quarterly
Refractory
Boiler and duct refractory hot-face temperature mapping — a different application from electrical IR, but the same discipline of trend-vs-baseline.
Cadence: at outage + periodic
What the Route Manager Actually Does
The route manager is the difference between an IR camera and an IR program. It turns individual thermal images into a graded, trended, work-order-generating system.
Route
Every critical asset scheduled on a quarterly cadence with the specific inspection points, load-condition prerequisite, and camera resolution requirement.
Grade
Every finding graded against NETA Table 100.18 delta-T (vs similar component and vs ambient), captured with thermal image, reference photo, and load %.
Trend
Same-asset, same-inspection-point history across routes — the trend line that shows a Tier 1 becoming a Tier 2 becoming a Tier 3 over successive quarters.
Work Order
CMMS work order raised on the route with severity tier, delta-T value, recommended action window, and priority mapped to NETA tier.
What a Working IR Program Delivers
When thermography is a routed, graded, trended system rather than an annual walk, electrical faults stop causing forced outages and insurance loss adjusters stop asking questions the plant cannot answer.
Compliant
NFPA 70B
documented and trended
Fewer
Electrical trips
loose lugs found early
Lower
Insurance risk
losses documented preventable
Every
Finding worked
on the route, not weeks later
Take the last IR report your plant received. See how many findings became work orders in the CMMS versus how many stayed in the PDF. If the ratio is not 1:1, the program isn't a program yet. Book a plant assessment — we'll grade one route against Table 100.18.
Frequently Asked Questions
How does this satisfy NFPA 70B's reporting requirement?
Every route inspection produces a documented record with thermal image, reference visible-light image, measured maximum temperature, reference temperature, delta-T classification, observed condition, likely cause, and the corrective work order raised. That record structure is what NFPA 70B Section 7.4 expects and what an insurance carrier asks for on a claim. The PDF report the thermographer used to produce becomes a byproduct of the record — the record is the compliance artifact.
What is the actual severity ladder we work against?
NETA Maintenance Testing Specifications Table 100.18. Tier 1 (1–3°C delta vs similar component or 1–10°C vs ambient): possible deficiency, recheck next quarter. Tier 2 (4–15°C / 11–20°C): probable deficiency, repair within 30–90 days. Tier 3 (21–40°C vs ambient): monitor continuously, urgent within 7–30 days. Tier 4 (above 40°C): major deficiency, immediate action. Every finding gets a tier, and the tier drives the work-order priority automatically — no negotiation on the route.
Do we still need a certified thermographer?
Yes. The camera and the workflow do not replace Level I or Level II certified thermographer judgment on interpreting a finding, particularly on transformer bushings or refractory. What the route manager does is standardize the capture and grading step so the thermographer's judgment lands in a structured record instead of a narrative report. Certified thermographers actually prefer the workflow because it removes the dictation-to-admin step that used to consume a third of their day.
Book a plant assessment to see it on a live route.
Can it handle continuous thermal monitoring on critical switchgear?
Yes. Where a plant installs continuous thermography sensors on critical switchgear — the NFPA 70B–permitted alternative to periodic inspection — iFactory ingests the continuous data alongside route data on the same asset record. The critical asset gets continuous monitoring against the same NETA thresholds; the rest of the electrical fleet runs on the quarterly route. Both roll up into the same compliance and trend view.
Can we start with one switchgear line-up or one route?
Yes. Most plants start with one MV switchgear line-up or one motor control center that has produced findings in the past, run one route on it against the full NETA structure, and prove the CMMS write-back. That pilot is usually enough to scope the plant-wide route calendar. Book a plant assessment and we'll walk one route with your thermographer.
Stop treating IR as an annual box-check.
Run One NETA-Graded Route on Your Own Switchgear
Bring one switchgear line-up and your last IR report. We'll re-grade the findings against Table 100.18, show the same-asset trend view, and cut the work orders it should have generated.
