Bulk Liquid Terminals: Rail Solutions for Cranes Managing Pipelines and Storage Tanks

In the critical infrastructure of the energy and chemical sectors, Bulk Liquid Terminals are the essential link for transporting and storing products like oil, LNG, and industrial chemicals. The safe and efficient operation of these facilities often relies on specialized rail-mounted equipment, such as gantry cranes for pipeline maintenance, hose handling cranes, and utility cranes around storage tank farms. The crane rail system in these potentially hazardous environments must provide absolute stability and require minimal maintenance.

The Challenge: Corrosive Environments and Precision Handling

Bulk liquid terminals present a unique set of challenges that demand a highly reliable rail infrastructure. Cranes in these areas are used for precise tasks, like positioning heavy loading arms or performing maintenance on critical pipeline infrastructure. Any rail misalignment could lead to operational delays or safety incidents.

Conventional bolted fasteners are a significant liability in these environments. The corrosive nature of airborne chemicals can rapidly degrade bolts and threads, while constant temperature fluctuations can cause them to loosen over time. This leads to “rail snaking” and misalignment, which is unacceptable where precision is key. To ensure safety and operational integrity, engineers need a heavy-duty crane rail fastening system that is both corrosion-resistant and immune to loosening from vibration.

9 Series Welded Rail Clips: The Heavy-Duty Solution

The 9 Series Heavy-Duty Welded Rail Clips are engineered specifically to provide long-term stability in the challenging environments of bulk liquid terminals. Unlike friction-based systems that can fail due to corrosion or vibration, these clips feature a base that is welded directly to the steel girder or soleplate, creating a permanent, maintenance-free connection.

Key advantages include:

• Forged Strength: The welded base creates an unbreakable mechanical bond with the support structure, offering superior resistance to the lateral forces generated by crane movement.
• Self-Locking Mechanism: A unique wedge-action design ensures constant downward pressure on the rail. As crane forces increase, the clip’s grip tightens, preventing any rail movement and ensuring precise alignment.
• Vibration Damping & Corrosion Resistance: An integrated vulcanized rubber tongue absorbs shock loads and vibrations. The entire clip assembly is hot-dip galvanized, providing excellent protection against the corrosive elements found in liquid bulk terminals.

Heavy-Duty 9 Series Welded Rail Clips Recommendation

Choosing the correct clip is vital for the safety and reliability of cranes in a bulk liquid terminal. The selection depends on the crane’s wheel load and the environmental conditions.

XINGRAIL 9220/20/45

This high-capacity clamp is designed for the heaviest gantry cranes used in pipeline installation or major maintenance projects. Its 235 kN (24 tons) of lateral resistance provides the ultimate stability for critical lifts.

• Download 9220 Technical PDF

9220 Welded Rail Fixing Clips Installation:

1. Preparation: Ensure the steel support surface is clean, dry, and free of contaminants. Position the clip base according to the rail width.
2. Welding: Weld the clip base on three sides (the two perpendicular sides and the back side). Do not weld the side closest to the rail to avoid heat transfer.
3. Weld Spec: Use a 5mm throat thickness fillet weld. Utilize low-hydrogen electrodes such as AWS E7018 or E7028 to ensure a durable, crack-resistant weld.
4. Torque: After the weld cools, assemble the upper clip and tighten the bolt to a final torque of 350 Nm.

XINGRAIL 9216/08/40

The 9216 is a versatile and robust clip ideal for the medium-duty cranes used for routine maintenance and hose handling around storage tanks and jetties. It provides a high level of security with 130 kN (13.3 tons) of lateral resistance.

• Download 9216 Technical PDF

9216 Welded Rail Fixing Clips Installation:

1. Positioning: Align the base plate relative to the rail foot, allowing for the clip’s 8mm of horizontal adjustment.
2. Welding: Weld the base on its three outer sides using a 5mm throat thickness fillet weld.
3. Electrodes: Use AWS E7018 or an equivalent low-hydrogen welding rod.
4. Torque: After cooling, assemble the clip and tighten the bolt to 350 Nm.

XINGRAIL 9120/15/38

This model offers a generous 15mm of lateral adjustment after welding. It is perfect for long rail runs where thermal expansion or minor foundation settlement might require future realignment, all without needing to cut the original welds.

• Download 9120 Technical PDF

9120 Welded Rail Fixing Clips Installation:

1. Alignment: Place the weldable base to accommodate the desired adjustment range.
2. Welding: Perform a 5mm throat thickness fillet weld on the three outer sides.
3. Electrodes: Low-hydrogen AWS E7018 or E7028 electrodes are recommended.
4. Torque: Secure the clip by tightening the bolt to 350 Nm.

XINGRAIL 9116/08/3

A compact solution for lighter utility cranes, maintenance trolleys, or applications where the rail is mounted on narrow beams. It provides reliable positioning with 55 kN of lateral force resistance.

• Download 9116 Technical PDF

9116 Welded Rail Fixing Clips Installation:

1. Setup: Position the clip on the narrow girder flange.
2. Welding: Weld the three accessible sides using a 4mm throat thickness fillet weld.
3. Electrodes: Use AWS E7018 or E7028.
4. Torque: Once cooled, install the upper component and torque the bolt to 125 Nm.

Technical Comparison: XINGRAIL 9 Series Models for Liquid Terminals

Model	Lateral Resistance	Horizontal Adjustment	Best Use Case
9220/20/45	235 kN	20 mm	Heavy pipeline and maintenance gantries.
9216/08/40	130 kN	8 mm	Hose handling and general-purpose cranes.
9120/15/38	120 kN	15 mm	Long rail runs needing adjustability.
9116/08/3	55 kN	8 mm	Utility cranes and narrow beam supports.

Why Use Reinforced Crane Rail Pads?

While clips provide lateral stability, Crane Rail Pads are essential for protecting the rail and the underlying foundation. They are a critical vibration damping solution for industrial facilities.

1. Shock Absorption: The pads absorb vibrations from the crane’s movement, protecting the concrete foundation from fatigue and micro-cracking over time.
2. Load Uniformity: The pad compensates for any minor irregularities in the steel support surface, ensuring the crane’s wheel load is distributed evenly along the rail to prevent stress points.
3. Corrosion Control: By creating an isolating barrier between the rail and the steel soleplate, the pad prevents galvanic corrosion, which can be accelerated in chemically active environments.

Installation & Maintenance Best Practices

A “fit and forget” system is the goal in any bulk liquid terminal to minimize maintenance in potentially hazardous areas.

• Welding Protocol: The clip base must be welded on three sides (excluding the side parallel to the rail) using a 5mm throat thickness fillet weld (4mm for the 9116).
• Electrode Selection: Always use low-hydrogen electrodes such as AWS E7018 or E7028 to create a strong weld that resists cracking.
• Torque Specifications: Ensure the correct tightening torque is applied to engage the self-locking mechanism. This is not just about tightness; it is about activating the design.
• Post-Weld Adjustment: Utilize the clip’s lateral adjustment capabilities to perfectly align the rail before final tightening. This simplifies the installation process and ensures long-term precision.

Global Rail Compatibility

Our heavy-duty crane rail fastening systems are compatible with all major international rail standards, ensuring they can be specified for projects anywhere in the world.

• European Standards: Compatible with DIN536 rails (e.g., A65, A75, A100).
• North American Standards: Designed for AREA Railway Standard Track used in industrial gantry systems.
• British & Australian: Fits BS Railway Tracks and Australian Standard (AS) profiles.
• Asian & Regional: Fully compatible with China Standard ISO/CE tracks, India Standard Railway Tracks, and GOST Standard Tracks.

Frequently Asked Questions (FAQ)

Q: Why are welded clips superior to bolted clips in a liquid terminal?
A: Welded clips provide a permanent, zero-maintenance base that cannot loosen due to vibration or degrade from corrosion, which is a major advantage in a hazardous and corrosive environment.

Q: Are these clips suitable for explosion-proof (EX) zones?
A: The clips themselves are a mechanical fastening system. Any welding must be performed following strict hot-work permit procedures required for the specific EX zone rating. Once installed, the system has no moving parts that could create a spark.

Q: How does the system handle thermal expansion of the rail?
A: The vulcanized rubber nose of the clip allows the rail to expand and contract longitudinally with temperature changes while maintaining a secure vertical and lateral grip.