Pharmaceutical facilities present a distinct set of requirements for structural materials. Production areas, cleanrooms, and technical spaces are cleaned with aggressive disinfectants and solvents. Some zones must remain free of metallic contamination, either to protect sensitive processes or to avoid magnetic interference. And because many pharmaceutical facilities operate around the clock, materials must require minimal maintenance and avoid the risk of rust particles entering controlled environments.

Fiberglass reinforced plastic (FRP) is often selected for these facilities because it is non-magnetic, does not generate sparks under impact, and resists corrosion from cleaning agents. However, the specification of FRP in a pharmaceutical setting is not automatic. Each application must be evaluated against the facility’s cleaning protocols, fire safety requirements, and operational constraints. This page explains the main considerations based on general industry knowledge.

Environmental Conditions in Pharmaceutical Facilities

Pharmaceutical plants are not uniform. Different areas impose different demands:

  • Cleanrooms and controlled environments: surfaces must be smooth, easy to clean, and resistant to disinfectants such as hydrogen peroxide, isopropyl alcohol, and quaternary ammonium compounds.
  • Washdown and process areas: frequent exposure to water, steam, and chemical cleaning agents can corrode metal walkways and supports.
  • Solvent use: some production processes involve organic solvents that can attack certain resins, so resin selection is critical.
  • Non-magnetic and non-sparking requirements: certain areas, such as those near sensitive instruments or where flammable vapors may be present, require materials that do not create magnetic fields or sparks under impact.
  • Fire safety regulations: enclosed spaces and cleanrooms often have strict fire performance requirements that influence material selection.

FRP can be a suitable choice for many of these conditions, but only when the specific resin and surface finish match the actual exposure.

Typical FRP Applications in Pharmaceutical Facilities

Mezzanine Walkways and Platforms

Pharmaceutical plants often use mezzanine levels for equipment access, piping, and utilities. Metal walkways in these areas can corrode from disinfectant overspray and humidity. FRP grating provides a corrosion-resistant alternative that is lighter than steel and can be installed without heavy lifting equipment. Molded open mesh grating is commonly specified because it allows air and light to pass through, which can be important in areas with strict ventilation requirements. See molded open mesh grating for product details.

Cable Tray and Utility Supports

Electrical and instrumentation cables in pharmaceutical facilities must be supported and protected without introducing metallic particles or magnetic interference. Fiberglass cable tray is non-conductive and non-magnetic, which makes it useful in laboratories, cleanroom service corridors, and process areas. It also resists corrosion from cleaning chemicals, eliminating the need for coated steel trays that can chip or rust. Visit fiberglass cable tray for more information.

Platforms Around Tanks and Processing Equipment

Access platforms around mixing tanks, reactors, and purification systems are exposed to both moisture and chemicals. FRP platforms can withstand this exposure without the maintenance burden of repainting or replacing corroded steel. They can be supplied with anti-slip surfaces to improve safety in wet conditions.

Resin Selection and Chemical Compatibility

The performance of FRP in a pharmaceutical environment depends heavily on the resin system. Cleaning agents and solvents vary widely in their chemical aggressiveness, and no single resin is compatible with all of them. For example:

  • Isophthalic polyester is suitable for mild cleaning agents and general moisture exposure.
  • Vinyl ester offers better resistance to stronger disinfectants and some organic solvents.

Before specifying a product, it is necessary to review the actual cleaning chemicals, concentrations, and contact times. This is a project-specific evaluation, not a general rule. The manufacturer should be able to provide chemical resistance data for the specific resin system under consideration.

Fire Performance Considerations

Fire safety requirements in pharmaceutical facilities can be stringent, especially in enclosed spaces or where flammable solvents are present. FRP products can be manufactured with flame-retardant resin systems to help meet certain fire performance criteria, but the specific rating depends on the resin formulation, the product geometry, and the applicable test standard.

Condition-dependent fire performance: Flame-retardant formulations can be supplied for projects requiring fire performance ratings. The applicable rating must be confirmed against the specific product configuration and the relevant test method. No general fire rating should be assumed without project-specific documentation.

This means that a statement such as “fire-rated” or “Class A” cannot be applied to a product unless the specific configuration has been tested and the results are available. The requirement should be discussed with the manufacturer early in the specification process.

Important Boundaries to Keep in Mind

Pharmaceutical environments often combine multiple stressors: chemical cleaning, moisture, temperature changes, and mechanical loads. Laboratory data based on single chemical exposure may not fully represent the performance of a product when several agents are used in rotation, or when the material is subjected to steam cleaning. Similarly, the non-magnetic and non-sparking properties of FRP are inherent to the material class, but the specific surface finish and fiber content can affect cleanability and particle generation.

Testing and scope boundary: Chemical resistance and mechanical property data are based on testing of specific configurations under controlled laboratory conditions. Results may vary depending on resin system, fiber content, surface finish, and exposure to combined cleaning agents. Evaluate actual facility conditions before final specification.

Selection Factors for Pharmaceutical Applications

When specifying FRP for a pharmaceutical facility, the following variables should be considered:

  • Cleaning protocol: exact chemicals, concentrations, and frequency of use.
  • Required surface finish: smoothness, ease of cleaning, and potential for particle shedding.
  • Fire performance: whether flame-retardant resin is required, and which test standard applies.
  • Mechanical load: foot traffic, equipment loads, and support spacing.
  • Non-magnetic / non-sparking needs: confirm that the application actually requires these properties, and verify that the chosen product meets the relevant criteria.

These factors are interrelated. A product that offers excellent chemical resistance may not meet the fire rating needed for a specific location. The final choice should be made with full awareness of all requirements, not just one.

Summary

FRP offers practical advantages in pharmaceutical facilities: corrosion resistance, non-magnetic properties, and reduced maintenance compared to coated steel. But specification requires a clear understanding of the cleaning chemicals, fire safety requirements, and operational demands of each zone. By matching the resin system and product configuration to the actual conditions, engineers can specify FRP components that contribute to a safe, clean, and durable facility.