Top Applications of Explosion-Proof Chain Blocks in Oil, Gas, and Chemical Industries

Explosion-Proof Chain Blocks: In industries like oil, gas, and chemicals, safety is the foundation of every operation. When you’re working in hazardous environments with flammable gases, vapors, and combustible dust, traditional lifting equipment just won’t cut it. That’s where explosion-proof chain blocks become indispensable.

This article explores the top applications, critical features, and benefits of using explosion-proof chain blocks in hazardous industrial environments — with a particular focus on Saudi Arabia’s rapidly evolving energy and petrochemical sectors.

What Are Explosion-Proof Chain Blocks?

Explosion-proof chain blocks, also known as ATEX-certified or EX-rated manual chain hoists, are specialized lifting devices designed to prevent ignition in explosive atmospheres. They achieve this by:

• Using non-sparking materials (like bronze, stainless steel)
• Preventing the build-up of static electricity
• Being fully enclosed to protect internal parts from gas and dust
• Complying with international safety standards (ATEX, IECEx)

Read Also: How to Choose the Right Electric Chain Hoist with Trolley for Your Operation

Why Use Explosion-Proof Chain Blocks in Hazardous Industries?Compliance with Safety Regulations

Explosion-proof chain blocks help companies comply with:

• Saudi Aramco safety requirements
• SABIC plant safety protocols
• Global certifications (ATEX, IECEx, NEC)

Reliable Performance in Volatile Zones

These hoists function efficiently in extreme conditions, from offshore rigs to desert chemical plants.

Cost-Effective and Low Maintenance

Compared to electric hoists, manual explosion-proof chain blocks are:

• Less prone to electrical failure
• Easier to inspect and maintain
• Cheaper to deploy in remote or offshore locations

Understanding Hazardous Zones

Zone	Description
Zone 0	Continuous explosive atmosphere (very rare for lifting use)
Zone 1	Likely to occur in normal operation (e.g., drilling platforms)
Zone 2	Unlikely but possible under abnormal conditions

Explosion-proof chain blocks from SSTC are rated for Zone 1 & Zone 2.

Top Applications in Oil, Gas & Chemical Industries

1. Offshore Oil Rigs (Rig Floor & Subsea Operations)

• Application: Lifting equipment during rig maintenance or valve replacement
• Challenge: Salty air, explosive gases, space limitations
• Why It Fits: Manual operation eliminates the need for power; spark-resistant metals reduce risk

2. Refineries (Catalytic Units, Distillation Columns)

• Application: Lifting compressors, heat exchangers, piping spools
• Challenge: High temperature zones and volatile hydrocarbons
• Why It Fits: Resistant to corrosion and certified for gas group environments

3. Petrochemical Plants (Storage Tanks, Loading Bays)

• Application: Maintenance of pumps, agitators, reactors
• Challenge: Flammable chemical vapors and confined spaces
• Why It Fits: Compact, rugged, and rated for overhead lifting in classified areas

4. LNG Terminals & Cryogenic Plants

• Application: Hose handling, cryogenic valve servicing
• Challenge: Low temperatures and gas leaks
• Why It Fits: Stainless steel chains and anti-sparking bodies withstand extreme conditions

5. Drilling & Exploration Camps (Wellhead Areas)

• Application: Lifting drill pipes, mud pumps, blowout preventers (BOPs)
• Challenge: Dust, gas, mobile rig structures
• Why It Fits: Portable, safe, and doesn’t require electrical power

6. Chemical Production Facilities (Batch Reactors, Flare Systems)

• Application: Removal of worn-out parts, tank access, emergency response
• Challenge: Constant presence of hazardous chemicals
• Why It Fits: Explosion-proof gears, hooks, and brakes designed for chemical resistance

Key Features of SSTC Explosion-Proof Chain Blocks

SSTC provides premium-grade EX-rated chain blocks sourced from trusted global brands and made for Saudi Arabia’s rugged industrial conditions.

Standard Features:

• Spark-resistant construction (copper-bronze, stainless steel, low-carbon steel)
• Sealed bearings and anti-static coating
• Load limiters and hand wheel guards
• Nickel-plated, corrosion-resistant chains
• Rugged hook latches and overload protection

Specifications to Consider When Buying

Spec	Recommendation
Capacity	0.5T – 10T (typical), higher on request
Lifting Height	3M – 30M depending on application
Chain Material	Nickel-plated alloy or stainless steel
ATEX Classification	Zone 1/2, Gas Group IIA, IIB, IIC
Surface Treatment	Electrostatic powder coating or galvanizing
Working Temperature	-20°C to +60°C (standard range)

Benefits of Working with SSTC (Safe and Secure Trading Company)

Exceptional Load Capacity

Due to its steel core, this rope supports heavier loads without significant stretch or structural fatigue.

Abrasion and Crushing Resistance

Perfect for winches, cranes, or sheaves where rope is repeatedly bent or dragged over surfaces.

Greater Longevity

Outlasts fiber core ropes in high-impact environments, reducing long-term replacement costs.

High Temperature Tolerance

Performs well in high-heat industrial settings (up to 200°C in some applications).

Stable and Durable in Harsh Conditions

From sandstorms to salty marine air, IWRC construction provides structural resilience in Saudi Arabia’s demanding environments.

Safety Tips for Using Explosion-Proof Chain Blocks

• Always inspect chains, brakes, and hooks before use
• Never exceed the rated load limit
• Use only in certified hazardous areas
• Train operators on emergency stop protocols
• Store in clean, dry, and well-ventilated areas

Final Word

Explosion-proof chain blocks are more than a safety requirement—they are a lifeline for industries working with flammable materials. With SSTC’s certified equipment, expert support, and deep industry experience, you can ensure compliance, reliability, and peace of mind.