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Specialized NDT-trending services
Inspection interval extension, KEMBUS
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Extension of steam drum inspection intervals
In most countries, authorities require a periodic visual/magnetic inner surface inspection of power plant pressure vessels such as steam drums.
Especially in the case of larger drums (L > 10 meters), the removal and reinstalling of their internals puts these inspections on the critical path of the plant's outage. For about 20 years, KEMA has been conducting automated ultrasonic steam drum inspections from the outside. The Dutch authorities accepted this methodology during this period as an alternative. The resulting reduction of outage time turned out to be a major benefit for the plant owners! This attractive Risk Based Inspection (RBI) approach method for inspection interval extension has been applied by KEMA at several Dutch power plants.
For more information download the brochure below or contact us.
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Inside wall thichness measurements from the outside
Boiler evaporator walls (water walls) of power plants and waste incineration plants bear a heavy load due to corrosion and erosion. Therefore these components are inspected during shutdowns. The integrity of boiler wall tubing can be monitored with KEMCOP’s® corrosion probes. The KEMA corrosion probe (KEMCOP®) was developed in 1997 to monitor the corrosive conditions in a high-temperature environment. In order to perform ultrasonic wall thickness measurements from the inside, many costly and time-consuming preparations and provisions are necessary: scaffolding, grinding of the tube surface and often inspection of the radiation level and special protective clothing. Especially at the larger plants, this is a major budget-consuming activity. KEMA has developed KEMBUS, an ultrasonic scanning system for wall thickness measurements from the outside to minimize these costs and problems.
Benefits:- No need for scaffolding in the boiler
- No need for grinding, grit blasting
- No need for radioactive radiation control
- Lower inspection cost
- Accurate wall thickness trending possibility
- Better reliability in exact reproduction of measurements.
For more information download the brochure below or contact us.
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