
SDT340 Case: Surveying 400+ Steam Traps Across a Campus in Two Days
SDT case: a private school steam heating system — 400+ traps surveyed with an SDT340 in two days. 64% healthy, 3% failed open, 3% failed closed, 15% early wear. Photos from the survey.

Source. SDT Ultrasound case: annual school steam heating survey during holidays.
Mission
Campus steam heat with 400+ traps across buildings. Goal: prove traps are healthy before the cold season.

Method
An SDT technician finished the fleet in two days with an SDT340: upstream check, trap/downstream ultrasound, spot radiometer for failed-closed suspects.


Report
| State | Share |
|---|---|
| Healthy | 64% |
| Out of service | 15% |
| Failed open | 3% |
| Failed closed | 3% |
| Early degradation | 15% |

Takeaway
Large fleets are surveyable with handheld ultrasound in a few shifts. Ultrasound + temperature covers both failure modes. See the survey method. KEG TRK — demo request.
Read also
7/22/2026
Vigilant: Permanent Ultrasonic Monitoring of Steam Traps and Valves
Up to 30% of traps may be failed; a 3 mm leak can cost €6,000+/year. How SDT Vigilant delivers online diagnostics for critical traps and valves — European plant case (−25% steam loss, €120,000/year).
6/18/2026
Case Study: Auditing 420 Steam Traps at a Plant — How the SDT340 Recovered 78 Million Tenge a Year
A typical steam-system audit case using the SDT340: 420 traps, 23% faulty, a loss calculation, payback in 3 weeks, and a plan for an ongoing diagnostic program.
7/22/2026
SDT Case: Ultrasound Saved CIP at a Food Plant — 2 of 2 Traps Failed Open
Real SDT case: a contractor at a food plant with ~30 critical steam traps bought an ULTRAChecker and found two blow-through traps on night one — before pasteurizer and CIP downtime.
