Tank Base Sealing & Annular Plate Protection

Tank Base Sealing & Annular Plate Protection

The tank bottom and annular plate region are among the most critical and vulnerable areas in storage tanks. Constant exposure to moisture ingress, soil contaminants, hydrocarbons, and chemical deposits makes these zones highly susceptible to external corrosion, crevice corrosion, and structural degradation.

At MPESB, we deliver specialized tank base sealing and annular plate protection systems designed to eliminate ingress pathways, enhance structural integrity, and significantly extend tank service life.

Critical Risk Factors Addressed

Our solutions are engineered to mitigate key corrosion drivers, including:

  • Water Ingress & Capillary Action
    Entry of rainwater, wash water, and groundwater beneath the tank base.
  • Crevice Corrosion at Tank Chime
    Corrosion initiation at the interface between the tank shell and annular plate.
  • Soil & Chemical Contamination
    Aggressive soil conditions and chemical exposure accelerating metal loss.
  • Microbiologically Influenced Corrosion (MIC)
    Bacterial activity in moist environments leading to localized corrosion.

Our Solutions:

  • Advanced sealing systems to prevent moisture ingress
  • Protection of annular plates and tank chimes
  • Enhanced structural stability and safety
  • Extended tank lifecycle

We ensure watertight sealing and corrosion resistance, minimizing risks of leaks and environmental hazards.

Advanced Sealing & Protection Systems

We utilize industry-proven materials and techniques to ensure long-term performance:

  • Flexible Elastomeric Sealing Systems
    Designed to accommodate thermal expansion and tank settlement without cracking or failure.
  • Petrolatum-Based Sealing & Wrapping
    Provides excellent water displacement, adhesion, and long-term corrosion resistance.
  • Epoxy & Hybrid Coating Systems
    High-performance coatings for enhanced chemical and abrasion resistance.
  • Grouting & Void Filling Solutions
    Eliminate gaps beneath the tank chime to prevent moisture accumulation and stagnation.

Application Scope

Our services are suitable for:

New Tank Installations

  • Pre-commissioning sealing systems
  • Long-term corrosion prevention from day one

Existing / In-Service Tanks

  • Retrofitting without major shutdown
  • Repair of damaged annular plates and sealing systems

High-Risk Environments

  • Coastal and marine locations
  • Refineries and petrochemical plants
  • Chemical storage facilities

Tank Maintenance & Internal Lining

Effective tank maintenance and internal lining systems are essential to ensure the structural integrity, operational safety, and longevity of storage tanks operating in demanding industrial environments. Exposure to corrosive chemicals, hydrocarbons, moisture, and temperature variations can rapidly degrade unprotected internal surfaces.

At MPESB, we provide end-to-end tank maintenance and lining solutions engineered to protect assets, maintain compliance, and optimize lifecycle performance.

Our Solutions:

Internal Lining

  • High-performance coatings for chemical resistance
  • Protection against corrosion and abrasion
  • Customized lining systems based on stored media

Preventive Maintenance

  • Inspection and condition assessment
  • Surface preparation and recoating
  • Lifecycle extension strategies

Comprehensive Tank Maintenance Services

Our maintenance approach is proactive, combining inspection, repair, and protection strategies:

  • Detailed Inspection & Condition Assessment
    Visual inspection, thickness gauging, and corrosion mapping to identify degradation zones.
  • Surface Preparation
    Mechanical or abrasive blasting to achieve required cleanliness standards (e.g., SA 2.5 / SSPC standards) for optimal coating adhesion.
  • Repair & Rehabilitation
    Restoration of corroded or damaged areas using approved repair systems before coating application.
  • Preventive Maintenance Programs
    Scheduled maintenance plans to reduce unexpected failures and extend asset life.

Advanced Internal Lining Systems

We apply high-performance internal lining systems tailored to the stored medium and operating conditions:

Epoxy-Based Linings

  • Excellent chemical and abrasion resistance
  • Ideal for crude oil, water, and chemical storage

Phenolic & Novolac Coatings

  • High-temperature resistance
  • Suitable for aggressive chemicals and solvents

Polyurethane & Hybrid Systems

  • Flexible and impact-resistant
  • Enhanced durability under dynamic conditions

Glass Flake Reinforced Coatings

  • Superior barrier protection
  • Increased resistance to permeation and corrosion

Performance-Driven Application Process

Our execution methodology ensures durability and compliance:

  • Pre-Inspection & Risk Assessment
  • Surface Preparation to Specified Standards
  • Controlled Coating Application (Airless Spray / Roller / Brush)
  • Curing & Environmental Monitoring
  • Inspection & Quality Testing (DFT, Holiday Testing, Adhesion Testing)

All processes are carried out in accordance with international standards (NACE, ISO, SSPC) and project-specific requirements.

Operational & Business Benefits

  • Extended service life of storage tanks
  • Reduced downtime and maintenance costs
  • Improved safety and regulatory compliance
  • Protection against product contamination
  • Enhanced asset reliability and performance

Industry Applications

  • Oil & Gas storage tanks
  • Petrochemical and refinery units
  • Water and wastewater treatment facilities
  • Chemical processing plants
  • Marine and offshore storage systems

Integrated Tank Protection Approach

Our internal lining solutions can be integrated with:

  • Tank base sealing & annular protection systems
  • External coatings and wrapping systems
  • VCI-based corrosion protection for idle systems

This ensures a holistic protection strategy, safeguarding tanks from both internal and external degradation mechanisms.