Inspections.

Over time, plant performance naturally degrades. 90% of installed plants have opportunities for performance improvement. Vogt Power inspectors are trained to find these opportunities by identifying parasitic losses within the HRSG and balance of plant.

On-site walkdown and assessment of equipment using specialized inspection equipment like videoscopes or borescopes.

A comprehensive ultrasonic thickness (UT) testing of all HRSG FACE-problem areas, including the feedwater inlet piping. We provide a description package and preparation guidelines so the customer can prepare the equipment for the inspector to test. Vogt will record and provide these UT readings on a matrix grid for future ease of testing and analysis.

A detailed FAC videoscope inspection can be utilized to inspect the HP, IP, and LP evaporator tubes accessed through the drums. If access is provided by the plant, inspection of the economizers and water preheaters can also be performed. For best results, it is recommended that customers provide as much access as possible.

A videoscope inspection allows easier identification of problems such as corrosion, deposits, erosion or FAC. It may also prevent the need for costly tube sample removal and evaluation.

Unless the customer requests it, videoscoping the feedwater piping and economizer headers are not usually done. The condition of that equipment is discussed with the customer on-site, after UT readings have been taken.

High energy piping inspections and hot and cold walkdowns of the piping hangers is critical and should be done on an annual basis. During outages, welds and welded components in the various high energy piping systems should be inspected.

An external inspection of the HRSG during operation. The inspection focuses on issues typically found due to thermal expansion or other operating problems.

This typically takes two days on-site for each HRSG. The inspection includes external, gas side and waterside (drums) inspection. This inspection includes a small amount of spot UT measurements in areas deemed to be susceptible to thinning on that specific HRSG.

On-site walkdown and assessment of equipment using specialized inspection equipment like drones.

A combination of on-site walkdown and assessment of equipment using specialized inspection equipment such as microstructure replication, coupled with an in-office assessment and engineering calculations.

Includes additions, improvements and modifications to all types of boiler surfaces, SCR, and CO catalyst additions, performance-efficiency improvements, steam-quality improvements, duct, boiler casing and liner upgrades, duct burner additions and plant assessment.

Frame agreements that cover a wide range of potential services.

On-site walkdown and assessment of equipment using specialized inspection equipment such videoscopes or borescopes and/or ultrasonic sensors.

We focus on the larger areas of concern designated by either the customer or from Vogt’s inspection of areas susceptible to thinning for the specific HRSG.

Videoscoping is performed from inside the drums into the evaporator sections. This can typically be done during the same two days of a standard inspection.

We work with the customer advising where to take the sample for testing. The tube samples are sent to the lab to determine if any degradation is occurring and what might be causing that degradation.