Protecting the Environment with an Appropriate Containment Solution

Compliance with Dielectric Oil Retention Requirements

MV and HV electrical transformers contain dielectric oils or hydrocarbons whose leakage can cause major soil and water pollution. In accordance with regulations, each unit must be equipped with a containment system (tank, pit, or liner) capable of holding at least 100% of the volume of dielectric liquid present. These systems ensure environmental safety and the regulatory compliance of industrial installations.

Total Containment Capacity for MV and HV Transformers

The full dielectric capacity containment pits designed by SANERGRID® guarantee optimal watertightness and high mechanical strength. Their robust and modular design meets the requirements of distribution transformers, power transformers, and sensitive industrial installations.

A Complete Range for Standard Requirements Not Subject to Fire Risk

BDRG Transformer Oil Containment Bund with Removable or Welded Panels

BDRG metallic transformer bund solutions are available in versions with removable or welded side panels, offering high installation flexibility. They are available in hot-dip galvanized steel, painted steel, or with CH5 GALVAGRID® treatment depending on environmental exposure conditions and technical constraints. These models provide a durable substation oil containment system for permanent installations.

TRFLEX Flexible Liners for Temporary and Long-Term Transformer Secondary Containment

Lightweight, cost-effective, and easy to deploy, TRFLEX® flexible liners (ECO, ECO+, SUPER-ECO) provide an ideal transformer oil spill containment solution for difficult-access sites or maintenance works.

The reinforced version, TRFLEX®-REFOR, equipped with a high-resistance tubular structure, is designed for the most demanding conditions and also enables long-term use as an oil retention tank for transformer storage. Manufactured from waterproof and resistant materials, all liners ensure effective dielectric oil containment system protection while simplifying logistics.

TRT-MODULO Modular Retention Tank for Substation

The TRT-MODULO® system, composed of multiple assembled sections, allows adaptation of containment systems to the most complex configurations. Its modular design adjusts to transformer bund sizing requirements and geometry, ensuring a tailor-made installation even on sites with space or accessibility constraints.

Standard or Custom References According to Your Equipment

Distribution Transformers from 160 to 3150 kVA

SANERGRID® transformer oil pollution prevention basins are available in standard references for MV distribution transformers ranging from 160 to 3150 kVA. These models cover most electrical distribution needs and guarantee a high level of safety and performance.

Autotransformers, Reactors and Oil-Immersed Power Transformers

Specific designs are also available for autotransformers, shunt reactors (IC), and HV oil-immersed power transformers. SANERGRID designs custom transformer secondary containment solutions adapted to the technical characteristics and operational constraints of each installation.

Substation Oil Containment System Designed for Long-Term Durability

Galvanized, Painted or GALVAGRID® Treated Steel

The materials used ensure excellent resistance to corrosion, weather exposure, and transformer mineral oils. The choice of coating depends on environmental conditions and guarantees optimal long-term durability.

Resistance to Outdoor Environments and Hydrocarbons

Designed for both indoor and outdoor use, SANERGRID® basins maintain their mechanical properties even when exposed to UV radiation, temperature variations, or hydrocarbons. They ensure environmental compliance transformer standards throughout the entire transformer lifecycle.

The Most Comprehensive Range on the Market, Designed for Field Constraints

Indoor or Outdoor Installation with Rainwater Filtration

SANERGRID® solutions can be combined with SPI filters for safe drainage of rainwater contaminated with hydrocarbons. These dielectric oil containment system setups enable secure gravity flow drainage and prevent overflow risks.

Load Capacity Adapted and Transformer Rolling Inside the Basin

Each transformer bund is dimensioned to support transformer weight, including during movement. Reinforced structures allow safe rolling of the transformer inside the basin, facilitating maintenance and integration.

Unique Accessories and Options to Customize Your Installation

SANERVIB Anti-Vibration Mounts, PTFE Plates, SANERBLOCK® Locking Clamps

To enhance stability, basins can be equipped with SANERVIB® mounts, PTFE plates for insulation, and SANERBLOCK® clamps.

SPI® Filters, Fire Covers and Complementary Safety Elements

SANERGRID® also provides SPI® filters for rainwater filtration and fire-resistant covers to ensure a complete installation compliant with transformer oil pollution prevention requirements.

Why Choose SANERGRID for Your Transformer Oil Containment Bund?

Expertise in MV / HV Dielectric Risk Management

With nearly 20 years of expertise in dielectric oil containment system management, SANERGRID supports operators in selecting, sizing, and implementing reliable containment basins.

High-Quality, Reliable, Expert and Regulation-Compliant Solutions

Each product is designed in accordance with applicable standards to ensure environmental compliance transformer goals are met.

Need an Oil Retention Tank for Transformer?

Contact our experts for a standard or custom transformer oil spill containment solution suited to your operational constraints.