Littauer Partners
Draft for review
Acoustic leak monitoring · boiler tubes and steam valves

Hear the leak before it stops the plant

Littauer Partners introduces Rectuson's acoustic monitoring systems to US power plant owners and operators. The sensors pick up a boiler tube or valve leak at the pinhole stage, so a forced outage becomes planned maintenance.

Acoustic emission · one sensor channel (illustration) Alarm at pinhole stage
Signal level Alarm threshold Based on a 2026 case on an operating coal unit: first alarm about 10 days before the rupture was confirmed
What a tube leak costs

Caught early, a tube leak costs 4 days. Missed, it costs weeks.

Caught early
4 days

1 day to shut down, 2 days to find and replace the tube, 1 day to test and wash.

Missed
20–25 days

A missed pinhole grows into a rupture. Neighboring tubes are damaged and the repair scope multiplies.

Lost generation avoided
$8.6–10.3M

Per leak on a 500 MW unit: the outage shortened by 15 to 18 days at about $571K per day.

Manufacturer's model calculation for a 500 MW coal unit at 83% capacity factor and about $0.057/kWh; tube material and labor excluded. Recalculated for your unit and market on request.

The company and its systems

Rectuson, and the 2 systems we introduce

Rectuson Co., Ltd. is a Korean maker of acoustic monitoring systems, founded in 2000 in Changwon. It designs and builds its own sensors, electronics and software, with a field team led by ASNT Level III specialists. Customers include state utilities and independent power producers in Korea, Indonesia and Vietnam.

System 1 · Boilers

Boiler tube leak detection

Acoustic sensors mounted on the outside of the boiler hear a tube leak at the pinhole stage and show where it is, so the plant can plan the repair instead of being forced offline.

  • Leak located on a 3D model of the boiler, so crews search a smaller area
  • Proven on coal units; applicable to combined-cycle HRSGs after a pilot
System 2 · Steam valves

Valve leak monitoring

Clamp-on sensors flag high-pressure steam valves that leak while they should be shut. It runs on the same sensors and software as the boiler system, and works on coal and gas plants alike.

  • Every valve on one screen, with an alarm for each
  • Nothing welded to the valve; sensors can go in with the unit running
How it works

The system listens for the leak and points to it

Step 1

Listen

A leak sends high-frequency waves through the metal long before it can be heard or seen. Sensors on the outside of the boiler or valve pick them up around the clock.

Step 2

Locate

Software compares the signal across sensors and places the source on a 3D model of the boiler, or on a per-valve display. Crews go to the right area instead of searching the whole unit.

Step 3

Alarm

A rising signal triggers an alarm at the pinhole stage, before rupture. A sudden rupture is flagged the moment it happens. Operators choose when to come down.

Track record

Proven in the field

26 years in condition monitoring built on acoustic emission.

78

Boiler units supplied in Korea, Indonesia and Vietnam, including independent power producers and state-utility plants.

~10 days

Early warning on an operating coal unit in 2026: the first alarm came about 10 days before the rupture was confirmed.

184

Valve monitoring channels ordered for a new-build, 2-unit nuclear station, delivery 2028.

AS9100D

Quality system also certified to ISO 9001:2015. Rectuson supplies radar condition monitoring to a national air force.

Pilot

A standalone pilot on one unit

Pilot terms are set by Rectuson and agreed with you before work starts. Rectuson's engineers direct, commission and train. You provide one project engineer as the point of contact, an installation window, and power for the acquisition panel.

1 · Survey

NDA and site visit

Site visit and proposal. Vendor registration and safety prequalification run in parallel.

2 · Engineering review

Design package

Drawings, cable routes and mounting method for your management-of-change process. No connection to your control network.

3 · Install

1 to 2 weeks on site

Boiler sensors go in during a planned outage. Valve sensors clamp on and can go in with the unit running, with your approval.

4 · Prove

3 to 6 months

Results reported against success criteria agreed up front: detection, false alarms and ease of use for operators.

Where it fits

Who we work with

New fleet owners and IPPs

Gas and coal plants bought at today's prices, where availability and capacity revenue protect the purchase price. Pilot on a newly acquired unit, then make it the fleet standard.

Coal units in life extension

Aging tubes, higher leak risk, and no room for forced outages while the grid is short. Start with valves or the boiler, whichever the next outage window allows.

Nuclear and process plants

Measure valve leakage directly instead of inferring it from flow, pressure or temperature. Balance-of-plant valves first; refinery and petrochemical pilots within existing process safety programs.

Contact

Worth a 30-minute call?

We'll walk you through how the system works and where it has been used, and learn about your units. If there's a fit, Rectuson's engineers will join a follow-up call to review your unit and outline a pilot.

info@littauerpartners.com Email us