Eratherm İzolasyon A.Ş.
Cold · Cryogenic · Vacuum · Field-Validated

Cryogenic Insulation Systems Engineering

Integrated thermal design, material selection, thickness optimization, numerical analysis, installation and performance verification for refrigerated ammonia, LNG, LOX, LIN, LAR and LH₂ storage and transfer systems.

  • Refrigerated NH₃
  • LNG
  • LOX
  • LIN & LAR
  • LH₂
  • Vacuum + MLI
Cryogenic and refrigerated spherical storage tank insulation project
Design to Commissioning One engineering approach across calculations, materials, construction and acceptance.
01 · DESIGN System Architecture & Material Selection
02 · ANALYSIS Thermal Calculations & Numerical Simulation
03 · DELIVERY Procurement, Installation & QA/QC
04 · ASSURANCE Owner’s Engineering & Acceptance Control
Engineering Fundamentals

What Is Cryogenic Insulation?

Cryogenic insulation is an engineered thermal-protection system that limits heat ingress into equipment, tanks and piping operating at extremely low temperatures. Its purpose is not only to reduce heat gain, but also to manage boil-off, condensation, icing, water-vapor ingress, corrosion, thermal contraction and process-safety risks.

In engineering practice, cryogenic service generally refers to temperatures below approximately −150 °C. Refrigerated ammonia systems normally operate above this threshold, but they share many of the same cold-insulation challenges: continuous vapor control, condensation prevention, thermal-bridge management, movement accommodation and long-term weather sealing.

For this reason, an effective cold or cryogenic insulation solution cannot be defined by thickness or insulation material alone. Insulation layers, joints, vapor barriers, supports, penetrations, cladding, sealants and inspection procedures must be designed as one continuous system.

ERATHERM Engineering Scope

Cryogenic Insulation Design, Analysis and Delivery

ERATHERM develops project-specific insulation systems from the initial design basis through detailed engineering, field application, testing and final acceptance.

Engineering decisions are based on operating conditions, process risks, geometry, ambient exposure, maintainability and required service life.

01

Design Basis and Process Review

Definition and verification of the parameters that govern the insulation architecture before material or thickness decisions are made.

  • Operating and design temperatures
  • Fluid properties and operating cycles
  • Ambient temperature, humidity, wind and solar load
  • Equipment geometry and maintenance strategy
02

Heat-Leak and Thickness Calculations

Steady-state and project-specific thermal calculations for heat gain, surface temperature, condensation control and insulation optimization.

  • Heat-gain and heat-leak calculations
  • Dew-point and condensation analysis
  • Surface-temperature verification
  • Optimum insulation thickness
03

Numerical Analysis and Simulation

Numerical models are used where one-dimensional calculations cannot accurately represent supports, penetrations, transient loads or complex geometries.

  • FEA-supported thermal analysis
  • 2D and 3D thermal-bridge modelling
  • Cooldown and warm-up assessment
  • Thermal contraction and interface evaluation
04

Material and System Selection

Comparison and selection of cellular glass, PIR/PUR, Cryogel, perlite, MLI, vacuum and hybrid systems according to actual service conditions.

  • Material compatibility assessment
  • Layer and joint architecture
  • Vapor-retarder and sealing design
  • Cladding and mechanical protection
05

Detailed Engineering Documentation

Translation of calculation results into buildable drawings, procurement documents and project-specific quality requirements.

  • Technical specifications and datasheets
  • Typical details and workshop drawings
  • MTO, BOM and insulation schedules
  • Method statements and ITPs
06

Installation, Inspection and Acceptance

Field delivery and technical assurance through trained application teams, supervision, documented inspections and project-specific acceptance checks.

  • Material and substrate inspections
  • Joint and vapor-barrier continuity checks
  • Hold and witness point management
  • Punch list, handover and performance review
Fluids and Applications

From Refrigerated Storage to Aerospace Cryogenics

ERATHERM’s experience covers industrial gas facilities, refrigerated tanks, cryogenic piping, oxygen systems and advanced LOX/LH₂ infrastructure.

Insulated spherical vessels used in low-temperature industrial systems
Refrigerated Storage

Ammonia Tanks and Low-Temperature Vessels

Tank shell, roof, bottom, piping, valves and support details engineered for condensation, vapor ingress, thermal movement and CUI control.

Industrial oxygen production and air separation facility
Industrial Gases

Oxygen Plants and Air Separation Units

Cold boxes, LOX, LIN and LAR tanks, transfer piping, valves and penetrations assessed with oxygen-service requirements in mind.

Industrial insulated piping and equipment in a process facility
Storage and Transfer

LNG and Cryogenic Process Piping

Tanks, transfer lines, loading systems, supports, valves and equipment designed for heat-ingress and vapor-control performance.

Insulated cylindrical equipment used in an advanced thermal system
Space and Test Infrastructure

LOX and LH₂ Launch Systems

Propellant tanks, filling and transfer lines, test systems and launch infrastructure requiring highly controlled heat leak and thermal bridging.

Cellular glass foam glass insulation blocks installed on industrial equipment
Load-Bearing Details

Tank Bottoms, Supports and Thermal Breaks

Cellular-glass and engineered support systems used where insulation must provide both thermal performance and mechanical load resistance.

Cellular glass foam glass insulation system field installation
Cellular glass system applied as part of an engineered low-temperature assembly.
Active Material Portfolio

Cryogenic Insulation Materials and Hybrid Systems

ERATHERM actively engineers, procures and applies cellular glass, PIR/PUR, cryogenic aerogel and Cryogel systems, perlite-filled configurations, vacuum insulation and MLI.

No material is automatically suitable for every cryogenic application. Selection depends on temperature, water-vapor transmission, mechanical loading, fire and oxygen compatibility, geometry, maintenance access, installation tolerances and life-cycle requirements.

The engineering objective is not to prescribe one preferred product, but to develop the most reliable complete system for the project’s actual operating and environmental conditions.
Closed-Cell · Load-Bearing

Cellular Glass / Foam Glass

Used in tank-bottom systems, load-bearing rings, supports, piping and equipment where vapor resistance, dimensional stability and compressive performance are decisive.

Closed-Cell · Efficient

PIR/PUR Systems

Preformed shells, blocks, panels and project-specific injected systems for cold piping, tanks and equipment. Joint configuration and vapor-barrier continuity are central to performance.

Flexible · Thin Profile

Cryogel and Cryogenic Aerogel

Flexible blanket solutions for constrained spaces, complex geometry, retrofits, piping and equipment where reduced thickness and installation flexibility provide project value.

Bulk-Fill System

Expanded Perlite

Project-specific bulk-fill insulation for double-wall tanks, cold boxes and annular spaces, designed together with settlement, filling and moisture-control requirements.

Advanced Cryogenics

Vacuum + Multi-Layer Insulation

Vacuum and reflective MLI architectures for LH₂, LOX, helium, vacuum-jacketed lines and advanced test systems where radiation and residual-gas conduction must be tightly controlled.

Explore MLI & Vacuum Engineering →
Project-Specific Architecture

Hybrid Insulation Systems

Cellular glass, PIR/PUR, aerogel, vapor barriers, MLI and protective systems can be combined where thermal, mechanical, safety and maintenance criteria cannot be met by a single material.

Integrated Delivery Model

From Concept Design to Commissioning

Engineering, procurement, field application and technical assurance can be delivered as one integrated package or as independent project scopes.

01

Concept and Design Basis

Process-data review, risk definition, design criteria and preliminary insulation architecture.

02

Thermal Engineering

Heat-leak, condensation, thickness, thermal-bridge and transient analyses.

03

System Selection

Comparison of materials, layer sequencing, vapor control, supports and mechanical protection.

04

Detailed Engineering

Technical specifications, datasheets, drawings, MTO/BOM, method statements and ITPs.

05

Procurement Support

Bid evaluation, material submittal review, compliance control and traceability.

06

Field Installation

Surface readiness, insulation installation, vapor sealing, cladding and site coordination.

07

Inspection and Testing

Hold points, workmanship inspections, continuity checks, punch lists and project-specific testing.

08

Acceptance and Handover

Commissioning support, performance review, QC dossier and final acceptance control.

Independent Technical Assurance

Owner’s Engineering for Cryogenic Insulation Projects

ERATHERM can represent the employer’s technical interests throughout the complete insulation-project life cycle, independently reviewing engineering, suppliers, contractors, field quality and acceptance documentation.

This scope is particularly valuable for ammonia, LNG, oxygen, hydrogen and advanced cryogenic projects where defects may remain hidden beneath the insulation and cladding until commissioning or operation.

Explore Consultancy & Supervision →
OE–01

Employer’s Requirements

Preparation or review of the design basis, technical specification, performance criteria, inspection requirements and tender scope.

OE–02

Design and Calculation Review

Independent verification of thickness calculations, thermal models, material choices, supports, vapor barriers and system details.

OE–03

Technical Bid and Vendor Review

Evaluation of supplier proposals, deviations, material datasheets, compatibility, documentation and technical completeness.

OE–04

Method Statement and ITP Approval

Review of construction sequences, joint treatments, vapor sealing, inspection points, acceptance criteria and repair procedures.

OE–05

Field Supervision and Quality Control

Site surveillance, hold and witness points, material traceability, non-conformance management and punch-list control.

OE–06

Commissioning and Final Acceptance

Review of inspection records, testing, performance observations, handover dossiers and final completion documentation.

ERATHERM experience in engineered low-temperature tank and vessel systems
Engineering Grounded in Field Experience Design decisions are informed by construction tolerances, joint behavior, access conditions and long-term field performance.
Relevant Project Experience

Industrial Gas, Ammonia and Aerospace Cryogenics

ERATHERM combines engineering-office capability with practical installation, inspection and acceptance experience in critical low-temperature systems.

Refrigerated Ammonia Storage Tank, piping, equipment, vapor-control and field-application scopes.
Oxygen Production and Air Separation LOX, LIN and LAR equipment, transfer systems and cold-facility applications.
LOX and LH₂ Launch Infrastructure Cryogenic propellant storage, transfer, filling and test-system engineering.
Vacuum and MLI Systems Advanced cryogenic and thermal-vacuum applications requiring controlled heat leak and specialized material selection.
Application, Inspection and Acceptance Integrated field scopes covering installation, supervision, QA/QC, testing and handover.

Project and client identities subject to confidentiality agreements are not published. Experience is described by technical system and delivery scope.

Quality and Performance Assurance

Inspection Must Follow the Complete System

Cryogenic insulation quality cannot be confirmed through final appearance alone. Materials, substrates, joints, vapor control, supports, penetrations and weather sealing must be inspected at the correct construction stages.

Material Compliance

Datasheets, certificates, dimensions, density, compatibility, traceability and storage conditions.

Hidden-Work Inspection

Substrate condition, layer sequence, joint staggering, support details and vapor-barrier continuity.

Cladding and Sealing

Water-shedding geometry, penetrations, overlaps, sealants, drainage and mechanical-protection details.

Acceptance Documentation

ITP records, inspection reports, NCR closure, punch lists, as-built documents and project-specific performance checks.

ASTM C680 ISO 12241 CINI Project Specifications Material Standards Oxygen-Service Requirements ITP · QA/QC

Applicable standards and acceptance criteria are confirmed separately for each project, jurisdiction, fluid and equipment class.

Technical FAQ

Cryogenic Insulation Frequently Asked Questions

Key questions about materials, thickness, vapor barriers, oxygen service, inspection and Owner’s Engineering.

What is cryogenic insulation?
Cryogenic insulation is a complete thermal-protection system designed to limit heat ingress into extremely low-temperature tanks, piping and equipment. It also controls condensation, icing, vapor ingress, corrosion, thermal contraction and process-safety risks.
What is the difference between cold and cryogenic insulation?
Cold insulation covers below-ambient-temperature systems generally, while cryogenic insulation addresses extreme low-temperature service, commonly below approximately −150 °C. Refrigerated ammonia is not normally below this threshold, but its insulation system shares many cold-service design requirements with cryogenic applications.
Which materials are used for cryogenic insulation?
Depending on the project, systems may use cellular glass or foam glass, PIR/PUR, Cryogel or other cryogenic aerogel blankets, expanded perlite, vacuum insulation, MLI and hybrid combinations. Vapor barriers, sealants, supports and protective cladding are also integral parts of the system.
How is cryogenic insulation thickness calculated?
Thickness is determined using fluid temperature, equipment geometry, ambient temperature and humidity, wind, surface-emittance assumptions, allowable heat gain, condensation limits, thermal bridges and operating conditions. Complex or transient details may require numerical modelling in addition to standard calculation methods.
Why is the vapor barrier critical?
Water vapor naturally migrates toward the cold surface. If it enters the insulation system, it can condense or freeze, increase heat transfer, damage joints and create corrosion risk. The vapor barrier must therefore remain continuous across joints, supports and penetrations.
What must be considered for LOX and oxygen-service insulation?
Materials, cleaning condition, contaminants, adhesives, sealants and nearby components must be evaluated against the project’s oxygen-service compatibility and cleanliness requirements. These criteria are confirmed with the process owner and applicable project standards.
Can an existing cryogenic insulation system be rehabilitated?
Yes. A rehabilitation scope can include document review, selective removal, visual inspection, moisture or corrosion assessment, thermal investigation, detail redesign and controlled replacement. The extent depends on the condition of the existing insulation, vapor barrier, cladding and substrate.
What does an Owner’s Engineer do in a cryogenic insulation project?
The Owner’s Engineer prepares or reviews technical requirements, calculations, material submittals, vendor proposals, drawings, method statements and ITPs. The role can also include field supervision, hold-point inspections, testing, punch-list control and final acceptance review.
Discuss Your Project

Let’s Define Your Cryogenic Design Criteria Together

Share the operating fluid and temperatures, tank or piping data, drawings, ambient conditions, insulation requirements and expected project scope. ERATHERM can evaluate the system from concept engineering through field application and final acceptance.