API 936 Overview
- What Are Refractory?
- Definition
- Functions
- Nsulation
- Corrosion Resistance
- Erosion Resistance
Types of Refractories
- Ramming Mixes
- Plastics
- Gunning Mixes
- Castables
- Trowelling Mixes and Mortars
- Brick
- Ceramic Fiber
- Block Insulation
Raw Materials
- Aggregate
- Bonding Mechanism
- Phosphate (Acid) Bond
- Cement (Hydraulic) Bond
- Clay
- Sodium Silicate
- Curing & Drying
Physical Properties of Refractory Materials and Test Procedures
- Bulk Density
- Compressive Strength
- Tensile Strength (Modulus of Rupture)
- Erosion Resistance
- Heat Resistance
- Thermal Conductivity (How to Use K-Stick)
- Thermal Expansion
Refractory Failure Mechanisms
- Erosion
- Corrosion
- Thermal Shock
- Mechanical Abuse
- Overheating
- Atmospheric Reaction/Chemical Attack
Factors Affecting Refractory Performance
- Product Quality
- Anchoring Design
- Installed Quality
- Installation Procedures
- Unit Operation
- Material Specification
- Experience of Applicator/Crew
Benefits of Using Metal Fiber Reinforcement
- Randomized Cracking
- Holding Lining in Place, if Cracking Occurs
Refractory Linings for Miscellaneous Equipment
- Sulfur Recovery Unit
- Tail Gas Cleanup Unit
- Feed Fired Heater
- Flue Gas Cooler & Stack
- Fluid Coker
- Hydrogen Furnace
- FCCU
- Concrete/Gunite Lined Drums
Introduction to the API RP 936
- Documentation (2.1)
- Material Qualification (2.2)
- Applicator Qualification (2.3)
- Installation Monitoring (2.4)
- As-installed Testing (3.1)
- Pre-dryout Inspection
- Dryout Monitoring (4.2)
Pre-Turnaround Planning (At least 6 Months Prior to Turnaround)
- Review of Past Inspection Reports, Repairs, Quality Control Records and Recommended Future Repair Priority Areas.
- Review of Unit Operation since the Last Major Turnaround.
- Review of Refractory Material Types Needed for Unit Repairs.
- Review of a Thermographic Survey from the Beginning of Operation as compared with One of Current Operation.
- Formulation of Plan.
- The Benefits of Component Replacements Compared to Insitu Repairs.
- Selection of Refractory Products for Shutdown Needs
- Selection of Refractory Contractor to Perform Work During Unit Shutdown
- Estimating Refractory Quantities Needed for Planned Maintenance Work
Advance Preparation of Refractory Lining Repair Procedures
- Scheduling Access
- Scaffolding Needs
- Efractory Removal Procedure
- Formwork Manufacture Plans
- Determining How Repair Lining Installations will be Done in Various Portions of the Unit
- Qualifying Installation Personnel
- Procedure for Expediting as Installed Quality Control Test Sample Preparation
- Developing a Good Work Flow Plan
- Turnaround Inspection/Repair Decisions
- Lining Repair
- Lining Curing/Startup Procedures
- Post Turnaround Reporting