NBK-POWERPLANT-1405
nabakcomposite.com
Technical & Engineering Guide for the Power Industry
Resilient Infrastructure for the Energy Industry; FRP and GRP
in Thermal and Combined-Cycle Power Plants
Engineering analysis of composite grating flooring, safety handrail, cable tray and equipment platforms —
from the perspective of the plant engineer, designer, installer and site supervisor — for boiler units,
cooling towers, high-voltage substations and turbine halls
01
Why the Power Plant Environment Is Harsh on Metal
02
Four Key Engineering Properties and Technical Comparison with Metals
03
Specific Applications Across Power Plant Units
04
Standards and Cross-Disciplinary Engineering Acceptance
Nabak Composite — Composite Solutions for a More Resilient Tomorrow
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NBK-POWERPLANT-1405 · FRP Applications in Power Plants
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Composite Solutions for a More Resilient Tomorrow
Page 01 / 04
Chapter One — The Engineering Case for FRP in Power Plants
Resilient Infrastructure for the Energy Industry; FRP and GRP Profiles in Power Plants
Thermal, combined-cycle and hydroelectric power plants present a uniquely demanding operating
environment: continuous moisture and vapor from the cooling tower, acidic fumes from the
boiler unit and stack, high electric-shock risk in the high-voltage substation and transformer hall,
and constant vibration from rotating equipment in the turbine hall. Metal structures
corrode rapidly under these conditions and pose an electrical safety risk. Nabak Composite's
FRP and GRP profiles — with their chemical resistance, complete
electrical insulation and light weight — have become an engineered choice for flooring, handrail,
cable tray and access platforms across power plant facilities.
Corrosion-Free
Resistant to moisture and
cooling-tower vapor
Non-Conductive
Electrical safety in
substations and transformers
UV-Resistant
Color stability on
outdoor plant platforms
Light & Strong
Reduced platform load and
easier installation at height
1Why Is the Power Plant Environment So Harsh on Metal?
Metal Structures in Power Plant Units
- Rapid corrosion when exposed to cooling-tower moisture and vapor
- Electrical safety risk near high-voltage substations and transformers
- Corrosion from acidic fumes in the boiler unit and stack
- High weight; difficult installation of platforms and stairs at height
- High cost and downtime for periodic unit maintenance and repair
Nabak Composite FRP / GRP Profiles
- High chemical and corrosion resistance under continuous moisture and vapor
- Complete electrical insulation; safe in substations and transformer halls
- Resistant to acidic fumes from the boiler unit and stack
- Lightweight; easy installation of platforms and stairs at height and in confined spaces
- Fewer maintenance cycles and less unit downtime
◆
In the image above, a worker stands on a yellow FRP composite inspection platform overlooking the
cooling towers and stack of a thermal power plant — an example of an access and inspection
platform application where light weight for installation at height, resistance to continuous
vapor exposure and electrical non-conductivity are all essential at once.
NBK-POWERPLANT-1405 · Technical Summary of Key Properties
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Composite Solutions for a More Resilient Tomorrow
Page 02 / 04
2Four Key Engineering Properties for Power Plants
Choosing FRP for power plant applications comes down to the intersection of four engineering
properties: the chemical and corrosion resistance of vinyl ester/polyester resin
against moisture, vapor and acidic boiler fumes; the inherent electrical insulation
of glass fiber and resin, which eliminates electric-shock risk in high-voltage substations and
transformer halls; light weight relative to strength, which simplifies installing
platforms and stairs at height and in confined equipment spaces; and UV stability
for reliable performance on outdoor plant platforms and walkways.
FRP platform walkway on a power plant access route — next to a composite cable tray
Performance summary of Nabak FRP/GRP profiles versus stainless steel, galvanized steel and aluminum in the power plant environment
| Engineering Property |
FRP / GRP (Nabak) |
316 Stainless Steel |
Galvanized Steel |
Aluminum |
| Resistance to continuous moisture and vapor |
High | High | Low | Medium |
| Resistance to acidic boiler fumes |
High | Medium | Low | Low |
| Electrical insulation |
Complete | None | None | None |
| Strength-to-weight ratio (installation at height) |
High | Medium | Medium | High |
| Color stability on outdoor platforms |
High | High | Low | Medium |
| Long-term unit maintenance cost |
Low | Medium | High | Medium |
Resin selection (vinyl ester for exposure to acidic boiler fumes, or isophthalic polyester for general
platform and walkway use) is recommended by Nabak Composite's technical team based on the specific
conditions of each power plant unit.
NBK-POWERPLANT-1405 · Specific Applications Across Power Plant Units
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Composite Solutions for a More Resilient Tomorrow
Page 03 / 04
3Specific FRP Applications Across Power Plant Units
Grating FlooringEquipment platforms and inspection walkways, slip- and corrosion-resistant
Handrail & Safety GuardingProtection at platform and stair edges with complete electrical insulation
Cable Tray & Cable LadderNon-conductive routing for power and instrumentation cables
High-Voltage Substation & Transformer HallPlatforms and walkways free of electric-shock risk
Cooling Tower & StackPlatforms and handrail resistant to moisture and acidic fumes
FRP flooring and cable tray in a high-voltage substation — complete electrical insulation near live equipment
⚡
Why Are High-Voltage Substations and Transformer Halls the Top Priority for FRP?
Near live electrical equipment, any conductive metal element — from flooring to handrail — is a
potential path for fault currents. FRP flooring, handrail and cable tray, with their complete
electrical insulation, eliminate this risk by design; and the light weight of the profiles also
allows installation on existing substation steel structures without adding structural load.
NBK-POWERPLANT-1405 · Standards and Engineering Acceptance
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Composite Solutions for a More Resilient Tomorrow
Page 04 / 04
4Reference Standards for the Power Industry
ASTM D638 / D790
Tensile and flexural testing of pultruded composite profiles
ASTM E84 / D635
Surface burning and self-extinguishing classification of resin
ASTM D4181
Specification for pultruded FRP grating flooring
ISO 14125 / 527
Mechanical property testing of fiber-reinforced composites
IEC 61936 / IEEE 980
Electrical safety requirements for high-voltage substation equipment
5Cross-Disciplinary Engineering Acceptance of This Solution
⚡
Industry PerspectivePower Plant Engineer
From a power plant engineering standpoint, the complete electrical insulation of FRP platforms,
flooring and handrail near high-voltage substations, transformer halls and control panels
eliminates electric-shock and fault-current risk by design. The resin's chemical resistance to
continuous cooling-tower moisture and vapor and to acidic boiler fumes extends the service life
of platforms and access walkways without frequent inspection and replacement; and the light
weight of the profiles enables installation of inspection platforms at height and on existing
structures without added structural load — a combination of technical reasons that justifies
this solution for the long-term operation and maintenance of power plant units.
Fast platform and stair installation with hand tools and lightweight components; reduced need for cranes in the confined spaces of power plant halls.
A full range of standard sections (angle, channel, beam, grating) for the integrated design of platforms, handrail and cable tray across the power plant unit.
✓
Project / HSE Supervisor
Complete electrical insulation and non-conductivity reduce electric-shock risk near high-voltage substations and transformers, meeting power-industry safety requirements.
Mechanical properties and load ratings compliant with international standards, citable in the load analysis of power plant access platforms and stairs.
◆
Nabak Composite supplies a full range of FRP/GRP composite profiles, grating flooring, handrail and
cable tray tailored to the technical and safety requirements of thermal, combined-cycle and
hydroelectric power plants — from cooling-tower platforms to high-voltage substations and turbine
halls — together with technical documentation and test certificates.