Harvest Technology
Industrial Solutions

Thermal Insulation for
Plant / Modules

One-stop thermal insulation engineering solutions for onshore modules, petrochemical plants, offshore platforms, and FPSO/FLNG modules.

Onshore Module
Cold Insulation
Hot Insulation
CUI Protection
Petrochemical / Chemical Plant
Hot Insulation
CUI Protection
Acoustic Insulation
Fire Protection
Offshore Platform
Cold Insulation
Hot Insulation
Acoustic Insulation
FPSO / FLNG Module
Cold Insulation
Hot Insulation
CUI Protection
Passive Fire Protection

3.1 Cold Insulation

Cold insulation systems are defined as insulation systems for pipelines and equipment that operate below ambient temperatures.

Cold insulation is required for:
  • Thermal conservation of pipelines or equipment to conserve refrigeration (limit heat gain)
  • To limit surface condensation and icing
  • To limit boil-off
Cold insulation systems shall be water vapour tight.
Cold Insulation System Types
PIR/PUR foam system installed on straight pipe section — cryogenic service
PIR/PUR Foam System
For pipe insulation in cryogenic service
Cellular glass block insulation system on process pipe — moisture-proof cold service
Cellular Glass System
For pipe insulation — moisture-proof, fire-safe

PIR Foam System for Pipe Insulation — Key Details

PIR foam 3D elbow installation — leak-proof joint on cryogenic pipe bend
01
Leak Proof 3D Elbow Installation
CNC milled small elbow sections — precision 3D cutting for complex pipe geometry
02
Milled Small Elbows by 3D CNC Cutting
Secondary vapor barrier applied over PIR insulation — moisture and ice protection
03
Secondary Vapor Barrier
Mitered PIR segments pre-assembled for large radius pipe elbows
04
Mitered Segments Pre-Assembled for Large Elbows

Cellular Glass System for Pipe Insulation

Cellular glass block insulation applied to process pipe — detail view of block jointing and cladding
Completely inorganic — zero water absorption
Fire-resistant and non-combustible
Resistant to all types of organic solvents and acids
Suitable for cryogenic to moderate temperature service
Ideal for below-ground and splash zone piping

Pre-Insulation System for Pipe Insulation

Harvest pre-insulation pipe system is an innovative solution for complex pipeline insulation — the principle is like 3D printing. Particularly suitable for LNG, liquefied gases and petrochemical plants, especially for jetty straight pipelines. Most installation is finished at the workshop.

Continuous seamless foam injection around the pipe — factory controlled process
1
Seamless foaming
Online machine trimming of foam to precise dimensions after foaming
2
Online trimming
Vapor barrier film wrapping applied to trimmed insulation pipe sections
3
Vapor barrier
Glass reinforced polymer winding over insulated pipe for mechanical protection
4
GRP winding
UV curing station hardens GRP layer — ensures long-term durability
5
GRP UV curing
Pre-insulated pipe sections connected onsite — fast installation at jetty or plant
6
Onsite installation
Benefits
Improved quality control
Reduce risks to schedule
Reduce health and safety risks
Save the overall costs

Insulation Box for Cold Insulation

Cold insulation box — prefabricated insulated enclosure for equipment and instruments in cryogenic service

Insulation Box — Cryogenic Equipment

Prefabricated insulation boxes provide enclosures for instruments, valve actuators, and equipment in cryogenic service, protecting against heat gain and ice formation.

Custom fabricated to equipment dimensions
Removable panels for maintenance access
PIR foam or cellular glass fill
Vapor barrier sealed on all sides

High Density Polyurethane Foam for Pipe Support

PropertyGrade 320Grade 224UnitStandard
Nominal density320224kg/m³ASTM D1622
Compressive strength≥ 6000≥ 4000KPaASTM D1623
Thermal conductivity @20°C≤ 0.050≤ 0.045W/m·KASTM C518
Close cell content≥ 90≥ 90%DIN ISO 4590
Blown agentCO₂/H₂OCO₂/H₂O——

3.2 Hot Insulation

Hot insulation systems are insulation systems for pipelines and equipment that operate above ambient temperatures.

Hot insulation is required for:
  • 1
    Thermal conservation of equipment and piping if economically justified
  • 2
    Temperature control of processes or products (e.g. to avoid solidification or too high viscosity — possibly combined with trace heating)
  • 3
    Personnel protection on surfaces with temperature of 250°C (482°F) or higher. Between 60°C and 250°C, open mesh guards are preferably used

Removable Insulation Blanket

Removable insulation blanket installed on valve — custom shaped for complex geometry

Removable Blanket — Valve Application

Reusable and easy to remove for maintenance access
Customized to fit complex geometries and equipment shapes
High-temperature rated materials
Suitable for valves, flanges, expansion joints, and instruments

3.3 Personnel Protection

Mesh Guard for Personnel Protection

For piping and equipment operating between 60°C and 250°C, open mesh guards are the preferred personnel protection method. Mesh guards allow air circulation while preventing accidental contact with hot surfaces.

Temperature Range
60°C (140°F) — 250°C (482°F)
Above 250°C
Full thermal insulation with cladding required
Open mesh guard installed on hot pipe — stainless steel mesh preventing personnel contact with 60-250°C surface

Applications

Process piping in plant areas with personnel access
Valve stations and manifolds
Heat exchangers and pressure vessels
Steam distribution systems

3.4 Aerogel Blanket Insulation

Application Gallery

Aerogel blanket applied to pressure vessel surface — ultra-thin high-performance insulation

Aerogel Blanket — Vessel Application

Aerogel Blanket for Vessel Applications

Aerogel blanket insulation delivers exceptional thermal performance in ultra-thin profiles. Ideal for vessels where space is constrained but thermal efficiency is critical. Harvest provides full prefabrication services at our workshop, enabling controlled quality and faster onsite installation.

Lowest Thermal Conductivity
Among solid insulation materials
Ultra-thin Profile
Space-saving for congested areas
Hydrophobic
Water repellent, maintains performance
Workshop Prefab
Controlled quality, faster install

Prefabrication at Workshop

Aerogel blanket prefabrication at Qidong workshop — precision cutting, shaping, and quality inspection

By prefabricating aerogel assemblies at our Qidong workshop, we ensure consistent quality, precise dimensions, and significantly reduced onsite installation time.

Precision cutting and shaping to vessel geometry
Pre-applied adhesive and fastening systems
Quality inspection at factory, not on scaffold
Packaged for safe transport and site delivery
Onsite installation by trained crews

3.5 Cladding

Aluminum and stainless steel metal cladding on insulated pipe rack — industrial plant environment

Metal Cladding

Aluminum and stainless steel cladding systems protect insulation from mechanical damage, UV radiation, water ingress, and CUI (Corrosion Under Insulation).

Aluminum cladding — lightweight, corrosion resistant
Stainless steel — high-temperature and aggressive environments
Custom profiles for pipe, vessel, and equipment
Sealed joints to prevent moisture ingress
GRP (glass reinforced polymer) cladding on insulated pipe — marine and offshore application

GRP Cladding

Glass Reinforced Polymer (GRP) cladding provides a superior outer jacket for insulation systems in marine and offshore applications — inherently corrosion-resistant, ideal for high-humidity and splash zone environments.

Corrosion-free — no risk of CUI beneath GRP
Excellent UV resistance — no painting required
Lightweight compared to metal alternatives
Available in various profiles and colors