Center Enamel Supplies High-Performance Floating Roof Tanks for Israel’s Midstream and Downstream Energy Infrastructure

As midstream energy logistics and downstream processing networks across the Eastern Mediterranean expand their capabilities—anchored by critical handling infrastructures, maritime terminal networks in Haifa and Ashdod, and strategic bulk storage depots—the demand for high-capacity, heavy containment assets continues to rise. Storage tank farms operating in these coastal and inland industrial zones must perform reliably under strict operational conditions. Containment assets are required to maintain high process safety, satisfy rigid environmental standards regarding volatile organic compound (VOC) emissions, and withstand harsh regional climate conditions, including high summer ambient heat, coastal maritime salinity, and intense UV exposure.

To counter aggressive product loss, secure maximum inventory yield, and eliminate hazardous vapor headspaces under intense solar exposure, Shijiazhuang Zhengzhong Technology Co., Ltd (Center Enamel) delivers custom-engineered Floating Roof Tanks (FRTs) tailored specifically for industrial clients in Israel.

As a global leader in bulk liquid storage with over 30 years of advanced manufacturing experience, Center Enamel designs and pre-fabricates comprehensive floating roof containment systems—encompassing both External Floating Roof Tanks (EFRTs) and Internal Floating Roof Tanks (IFRTs)—in strict compliance with API Standard 650 Annex C and Annex H.

1. The Engineering Logic of Floating Roof Systems in Mediterranean Climates

Traditional fixed-roof storage tanks maintain a permanent air-gas headspace (ullage) above the stored liquid line. When storing volatile hydrocarbons—such as crude oil, gasoline, jet fuel, and light naphtha—under intense regional sun, the liquid surface rapidly flashes into gas. This leads to two major operational risks:

1. Aggressive Evaporative Product Loss: Continuous daily thermal cycles drive "breathing losses," venting valuable product yield straight into the atmosphere.

2. Explosive Internal Atmospheres: The accumulation of Volatile Organic Compounds (VOCs) and hazardous gases like hydrogen sulfide ($H_2S$) creates highly combustible headspace zones.

Center Enamel’s Floating Roofs directly solve these structural vulnerabilities. By engineering a buoyant, liquid-tight deck that rests directly on the fluid surface and tracks vertically with liquid level shifts, the vapor headspace is completely removed or isolated. This system suppresses up to 95% to 99% of VOC breathing losses, preserving inventory yield while eliminating the flammable air-vapor mixture required to support high-intensity tank explosions.

2. Comprehensive Portfolio: External vs. Internal Floating Roof Tank Configurations

Depending on the specific volatile profile of the stored product, chemical aggressiveness, and terminal location, Center Enamel provides custom configurations engineered through advanced Finite Element Analysis (FEA):

A. External Floating Roof Tanks (EFRT) – API 650 Annex C

Designed primarily for large-diameter bulk terminal storage (such as massive crude oil reserves at maritime ports).

● Double-Deck Welded Steel EFRs: The top and bottom steel plates enclose a compartmentalized, dead-air space across the entire diameter. This space serves as a highly efficient thermal insulation barrier, preventing extreme summer heat from warming the underlying crude oil, while simultaneously mitigating center-deck vapor "ballooning" caused by intense solar exposure.

● Single-Deck Pontoon EFRs: An economical yet structurally rigid alternative featuring a continuous thin center deck skin ringed by a segmented series of liquid-tight perimeter buoyancy chambers. In compliance with international standards, Center Enamel's designs guarantee the roof remains safely afloat even if the primary center deck skin and any two adjacent pontoon compartments suffer physical punctures or fluid breaches.

B. Internal Floating Roof Tanks (IFRT) – API 650 Annex H

Designed for refined products (such as gasoline, jet fuel, and light chemical intermediates) where protection from atmospheric elements and airborne dust contamination is paramount.

● Skin-and-Pontoon Aluminum IFRs: A series of interconnected, liquid-tight perimeter and internal buoyancy pontoons supporting a continuous thin aluminum sheet skin. Highly cost-effective and resistant to corrosion.

● Full Contact Honeycomb IFRs: Built with an interlocking matrix of premium aluminum or stainless steel panels that float flush against the liquid surface. Because it eliminates the shallow vapor space beneath the deck skin, it delivers the absolute highest level of VOC containment available.

3. High-Performance Rim Seals and Safety Systems

The boundary where a dynamic floating deck meets a static vertical tank shell requires robust engineering to prevent vapor leakage and maintain operational safety:

● The "Zero-Gap" Sealing Protocol: The perimeter gap is protected by premium mechanical shoe primary seals coupled with multi-layered fluoroelastomer (PTFE/Viton) secondary wiper seals. These systems maintain continuous contact along the interior wall, easily accommodating out-of-round shell irregularities to form an airtight barrier.

● High-Capacity Storm Drainage (for EFRTs): To prevent sudden seasonal downpours from overloading an open deck, Center Enamel integrates premium internal drainage networks using either articulated steel pipes with mechanical swivel joints or high-strength flexible hoses. These lines rapidly discharge water from the deck surface to the outside of the tank shell at rates up to 250mm/hour, preventing roof submergence.

● Low-Impedance Lightning Grounding: Atmospheric lightning strikes represent a primary fire hazard for open-top tanks. Center Enamel floating roofs are equipped with multiple stainless steel grounding shunts and earthing cables (compliant with API 545 and NFPA 780). These provide a direct, low-impedance path to ground, safely dissipating static charges and eliminating electrical arcing near the rim seals.

4. Technical Specification & Performance Framework

5. Overcoming Extreme Environments: The Aluminum Dome Shield

For projects located in high-wind coastal corridors or regions subject to high ambient heat and windblown dust, deploying an exposed open-top EFRT brings significant maintenance challenges. Airborne dust accumulates on the exposed deck, clogging center drainage screens and causing mechanical seal abrasion, while the extreme sun forces rapid degradation of exposed secondary rubber seals.

To overcome this environmental bottleneck, Center Enamel offers a highly effective protection upgrade: retrofitting or building a self-supporting Aluminum Geodesic Dome Roof directly over the floating roof tank shell.

By combining an API 650 Appendix G aluminum dome with a floating deck, the storage asset is completely isolated from the environment:

● Atmospheric and Dust Isolation: Completely seals the tank interior from corrosive maritime air, rainfall, and blowing dust, protecting the underlying dynamic rim seals from abrasion and maintaining fluid purity.

● Elimination of Rainwater Drainage Risks: Blocks rainwater from accumulating on the floating deck, entirely removing the operational risk of a drainage hose failure or a jammed swivel joint sinking an open roof structure.

● No Hot-Work Field Assembly: The modular aluminum components are secured mechanically using structural bolts and premium silicone gaskets. This eliminates the need for open-flame field welding or hot-work permits, allowing safe installation inside active, high-risk terminal zones.

6. A Unified Turnkey Containment Ecosystem Partner

Sourcing the primary tank shell from one vendor, the floating deck from a second fabricator, and an environmental covering from a third frequently introduces field measurement errors, installation delays, and split-warranty disputes.

Center Enamel removes this risk by acting as a single-source turnkey containment ecosystem provider. Holding nearly 200 proprietary patents and operating state-of-the-art automated manufacturing facilities certified to ISO 9001:2015, Center Enamel designs, manufactures, and supplies the entire asset stack simultaneously under strict factory quality control.

Whether integrated with our field-welded steel tanks or paired with our premium Glass-Fused-to-Steel (GFS) and Fusion Bonded Epoxy (FBE) bolted vessels—which have already been successfully deployed across high-standard industrial wastewater, municipal sewage, and bio-energy containment systems globally—Center Enamel ensures that the floating roof matches perfectly in engineering tolerance and structural load distribution.

Capital-Efficient, Future-Proof Infrastructure

As regional midstream and terminal networks continue to modernize their bulk storage facilities, investing in durable, code-compliant infrastructure is vital. Center Enamel's Floating Roof Tanks provide refinery and bulk terminal operators with an ideal balance of evaporation control, operational safety, and structural longevity. By matching advanced material science with single-source execution and weather-resistant upgrades, Center Enamel helps industrial operators protect inventory, reduce emissions, and secure decades of reliable asset service life.

Protect your refinery inventory, optimize asset safety, and eliminate product yield loss. Contact Center Enamel today for an expert technical engineering consultation and a code-compliant project quote for your facility.