This document provides guidelines for applying and inspecting passive fire protection (PFP) using Chartek, an intumescent fireproofing material. It discusses surface preparation, the use of primers and mesh reinforcement, application methods including spraying, and inspection requirements at each stage. Repairs to Chartek involve removing damaged areas and reapplying the material in multiple coats over primer and mesh to meet thickness specifications. Regular quality control inspections are emphasized throughout the application and curing process to ensure the fireproofing is applied correctly.

1. PFP – Fireproofing Application
& Inspection
CRISP Project, BJCHI Yard Thailand.

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CONTENTS
1. Scope
2. Introduction
3. Surface Preparation
4. Primers
5. Reinforcement
6. Chartek application
7. Inspections
8. Repairs
Fireproofing Application & Inspection (PFP)

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1- SCOPE
The content of this presentation is intended for guidelines of PFP application
and inspection activities.
The given application parameters, details etc. are based on general
recommendations which may be subject to change and may not be applicable
to all Chartek products or specific projects.
For application and QC purposes always consult the latest product literature.
This includes the Product Data Sheet(s) and Application Manual, and should be
done in combination with the project specification and AkzoNobel
Fireproofing Application & Inspection (PFP)

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2- INTRODUCTION
• Steels do not burn, however at elevated temperatures
it loses strength which can lead to structural failure
• It is important to limit the temperature development in
steelwork to ensure that it can still carry the its applied
structural loads in fire outbreak.
• Chartek is designed to extend the time until steel
reaches the critical temperature at which it loses its
structural integrity.
Fireproofing Application & Inspection (PFP)

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3- SURFACE PREPARATIONS
• Good quality surface preparation is critical to the
performance of any coating system.
• A typical Chartek surface preparation specification should
address:
o Removal of contamination, initial cleaning and
degreasing
o Removal of mill scale or surface corrosion
o Removal of weld spatter, inclusions and other
substrate imperfections
o Removal of any existing coating or other product not
specified as part of the Chartek system
o Creation of adequate surface profile
Fireproofing Application & Inspection (PFP)

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4- PRIMERS
• It is not recommended to apply Chartek directly to blast-cleaned substrates. Environmental
factors such as temperature, time and humidity may influence the substrate condition;
therefore, making it necessary to prime the substrate and prevent deterioration of the blast.
• Following types of primers are commonly used;
o Epoxy-based primers
o Zinc silicate primers
Fireproofing Application & Inspection (PFP)

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5- REINFORCEMENT
Mesh Reinforcement
• Mesh is used for the retention of the Chartek char during the
fire; Both in holding the system together and in holding the
char to the substrate.
• The specification, applicable fire design standards and
Chartek procedures will indicate when and where mesh is
required. This will include necessary coverage, overlaps and
coatbacks
Fireproofing Application & Inspection (PFP)

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Mesh Reinforcement
• HK-1 or HK-2 carbon fiber cloth and Charlock mesh used for
carbon steel
• In some circumstances metal mesh reinforcement may be
used (in place of HK-1 or HK-2 mesh) if specified by the
client or approving authority (e.g. Norsok M-501).
• Generally stainless steel mesh is used for stainless steel
substrates
Fireproofing Application & Inspection (PFP)

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6- PFP APPLICATION
Mixing Chartek
Fireproofing Application & Inspection (PFP)
• Add Part B into the pre-mixed Part A
• Ensure correct PPE is used
• Use approved power mixer to mix Chartek
• Mix until a uniform color and texture is
achieved
• Do not over mix as the Chartek may
overheat

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Hand Tools Required
Fireproofing Application & Inspection (PFP)
• Short nap rollers suitable for area
o 100mm (4 inch) or similar
o 180mm (7 inch) or similar
• Scissors for HK-1/2 Mesh
• Tape measure
• Utility knives
• Spray bottles for solvent
• Wet film gauge
• Trowel selection
o Pointed nose
o Gauging / rounded nose
• Masking tape and plastic or paper
• Funnels

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Methods of Chartek Spray Application
Fireproofing Application & Inspection (PFP)
1- Plural Component airless spray
• Most common method on large new construction projects
• Chartek is a thick or viscous material (thixotropic) and it is
most efficiently applied with purpose built hot spray plural
component pumps
• Have the advantage of not requiring any prior mixing of
part A and part B components before loading into the
machine
• There are several models from different manufacturers
which are approved for Chartek application

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Methods of Chartek Spray Application
Fireproofing Application & Inspection (PFP)
2- Modified Single Leg airless spray
• More portable
• Used on smaller projects

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7- INSPECTION
Chartek Inspection
Inspection of the Chartek system is a critical activity Inspection or QC must be undertaken
at each stage of the application process. This includes but is not necessarily limited to;
• Cleaning
• Surface preparation
• Primer (WFT and DFT)
• 1st coat Chartek (WFT)
• Mesh
• 1st coat and mesh DFT
• 2nd coat Chartek (WFT)
• Finishing of surface film
• Total system DFT
Fireproofing Application & Inspection (PFP)

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Fireproofing Application & Inspection (PFP)
Surface Preparation Inspection

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Fireproofing Application & Inspection (PFP)
First Coat Primer and Mesh Inspection

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Fireproofing Application & Inspection (PFP)
Final Inspection

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8- PFP REPAIRS
Chartek Repairs
• It is possible to repair or replace Chartek and to tie into pre-existing Chartek materials
• Repairs may be required due to a number of defects;
• Improper Curing
• Mechanical Damage
• Cosmetic Defects
• Water Ponding / Surface Cracks
• Surface Rust / Stains / Contaminants
Fireproofing Application & Inspection (PFP)

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PFP Defects
Improper Curing
• Improper Mixing ratio
• Excessive thinner used during application
• Incorrect application parameters
Fireproofing Application & Inspection (PFP)

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PFP Defects
Mechanical Damage
• Poor handling practices
• Improper storage / stacking
• Negligence during transportation
• During Erection
Fireproofing Application & Inspection (PFP)

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PFP Defects
Cosmetic Defects
• Mesh Exposed due to lower DFT
• Hair of roller
• Cavity caused due to improper rolling
• Uneven finish
• Pinholes
Fireproofing Application & Inspection (PFP)

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PFP Defects
Water Ponding / Moisture
contact during application
• Poor environmental protection during
application
• Poor storage practices
• Wrong stacking
Fireproofing Application & Inspection (PFP)

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PFP Defects
Surface Rust / Stains / Contaminants
• Poor protection from steel grinding dust during erection
• Removed by washing, clearing
Fireproofing Application & Inspection (PFP)

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Removal of damaged chartek
Fireproofing Application & Inspection (PFP)
PFP Repair Procedure

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Ensure repair area is clean, dry and free from contaminants
Fireproofing Application & Inspection (PFP)

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Apply first layer of Chartek to primed surface
Fireproofing Application & Inspection (PFP)

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Apply mesh as required or as per specification, Ensure 150mm overlap fro jet fire
scenarios
Fireproofing Application & Inspection (PFP)

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Complete Chartek system with subsequent coats to meet specification
Fireproofing Application & Inspection (PFP)

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Fireproofing Application & Inspection (PFP)
Thank you!