The disadvantages of the spray-on plaster method include:

• Drying time – the drying/curing period is time-consuming, it normally takes several days and results in increased downtime costs
• Cracking – caused by vibration or thermal expansion/contraction results in loss of thermal and/or noise insulation properties
• Thermal stress – there is a risk of bearings and shaft damage as a result of thermal stress
• Environmental problems – partial or complete removal of spray-on insulation for inspection or maintenance is dirty, requiring costly and time-consuming dust control procedures
• Reusability – spray-on insulation is not reusable

The above difficulties are overcome by technical and economical innovation that is NTS, which allows a quick and easy partial or complete demounting of the insulation jacket. Consequently, inspection, repair and maintenance activities, together with associated downtime costs can be reduced by 25-100% compared to traditional methods.

Advantages of NTS system:

• Prevents heat loss and thermal stress in the turbine
• Requires no drying time
• Saves insulation removal time
• Withstands temperatures up to 600°C (1100°F)
• Ensures environmentally desirable, dust-free installation and dismantling
• Made of reusable materials
• Imprevious to vibration and contraction/expansion damage
• Has a minimum surface temperature of 20°C (36°F) above the ambient temperature
• Makes partial dismantling possible
• Has a tough, oil-resistant surface
• Ensures efficient noise insulation – less than 80 dBA with no noise enclosures
• Has an aesthetically pleasing but functional appearance
• Cost effective method