Thermal Insulation Covers for Nuclear Plants Outside Containment

Over 30 Years of Specialized Removable Insulation Engineering for the Commercial Nuclear Power Fleet.

Advanced Thermal Corp. (ATC) has been engineering, patterning, and fabricating custom removable insulation covers for the commercial nuclear power generation industry for more than three decades. Today, we service the largest nuclear utility operators and fleet producers across the United States and Canada.

Our two strategically located domestic manufacturing plants enable ATC to support multiple nuclear plant refueling outages simultaneously. We deliver precision-measured, utility-grade removable insulation blankets on-time, on-budget, and manufactured to rigorous nuclear quality assurance standards—helping plant operators shorten critical-path outage downtime and ensure radiation safety.

» Download our Technical Guide: Removable & Reusable Insulation Covers for the Nuclear Industry (PDF)

Delivering on the Nuclear Promise

Advanced Thermal Corp. is the industry-leading removable and reusable insulation manufacturer with proven, direct field experience supporting nuclear refueling outages alongside utilities, operations teams, and outage specialty contractors. Every project is collaboratively engineered to eliminate delays:

• Zero RAD-Waste, Once Installed: Removable blanket systems eliminate single-use fibrous or calcium silicate waste that requires costly rad-waste disposal drums.
• Improved Industrial & Thermal Safety: Touch temperatures engineered below OSHA limits (≤ 140°F / 60°C) protect maintenance crews in confined auxiliary compartments.
• Faster Installation & Removal Times: High-grade stainless steel draw-buckles and lacing rings enable unlacing in minutes without destructive cutting tools.
• Reduced Radiological Exposure (ALARA): Rapid de-insulation and instant re-attachment sharply reduce technician stay-times in radiological zones.
• Exceptional Fit & Quality: Standardized digital patterning achieves an industry-leading .001% misfit rate, preventing outage delays.
• Rapid Repeat Replacement: Permanent asset tagging ensures rapid one-call reordering if a blanket is contaminated or damaged.

Nuclear Refueling Outage Lifecycle Execution

Comprehensive knowledge of nuclear refueling outage staging allows ATC to support nuclear stations through every phase—from initial pre-outage scope definition to post-outage recommissioning:

NRC Regulatory Guide 1.36 Compliance & Quality Assurance

Nuclear plant piping and safety systems outside containment require materials of construction that rigorously prevent stress corrosion cracking (SCC) of austenitic stainless steel:

• NRC Regulatory Guide 1.36 Qualified: Fully certified and batch-tested insulation materials and jacketing meeting strict leachable chloride, fluoride, and silicate threshold limits.
• Near-Zero Rework Metric: Stringent in-process inspections ensure fit fidelity with a rework rating approaching zero.
• Individual Asset Mapping: Every blanket includes permanent, riveted stainless steel identification tags corresponding to isometric P&IDs and component tags.
• Radiation & Chemical Resistance: Engineered cold-face fabrics resist radiological decon wash solutions, chemical spills, and high humidity in auxiliary turbine buildings.