Mechanical Hot Tapping Clamps are devices used to attach a hot tap fitting to a pressurized pipeline, allowing for a branch connection to be made without shutting down the pipeline.

Definition:

Mechanical Hot Tapping Clamps are mechanical devices that clamp onto a pipeline, providing a secure and leak-tight connection for hot tapping operations.

Purpose:

The purpose of Mechanical Hot Tapping Clamps is to:

1. Provide a safe and reliable connection to the pipeline.
2. Enable hot tapping operations without shutting down the pipeline.
3. Allow for the installation of branch connections, valves, or other fittings.

Key Components:

1. Clamp body
2. Mechanical locking mechanism
3. Sealing elements (e.g., gaskets or O-rings)
4. Adjustment mechanism (e.g., bolts or screws)

Key Features:

1. Mechanical locking mechanism: Securely attaches the hot tap fitting to the pipeline.
2. Adjustable design: Accommodates various pipeline sizes and types.
3. High-pressure rating: Suitable for high-pressure applications.
4. Corrosion-resistant materials: Ensures durability and longevity.

Types of Mechanical Hot Tapping Clamps:

1. Welded clamps: Welded directly to the pipeline.
2. Bolted clamps: Secured to the pipeline using bolts.
3. Hinged clamps: Allow for easy installation and removal.

Advantages:

1. Safe and reliable: Ensures a secure connection to the pipeline.
2. Easy to install: Simplifies the hot tapping process.
3. Cost-effective: Reduces the need for expensive shutdowns.
4. Versatile: Suitable for various pipeline sizes and types.

Applications:

1. Oil and gas pipelines
2. Chemical processing pipelines
3. Power generation pipelines
4. Water treatment pipelines
5. Industrial pipelines
6. Onshore / Offshore.
7. Marine

Standards and Regulations:

1. API 6D
2. ASME B31.4
3. ASTM A105
4. NACE MR0175
5. ISO 14313

Here are some common specifications for Mechanical Hot Tapping Clamps:

General Specifications

1. Size Range: 2-48 inches (50-1200 mm)
2. Pressure Rating: Up to 10,000 psi (689 bar)
3. Temperature Range: -20°C to 200°C (-4°F to 392°F)
4. Material: Carbon steel, stainless steel, alloy steel

Mechanical Specifications

1. Clamp Type: Welded, bolted, hinged, or split-clamp design
2. Locking Mechanism: Mechanical locking mechanism (e.g., bolts, screws, or levers)
3. Sealing Elements: Gaskets, O-rings, or other sealing materials
4. Adjustment Mechanism: Bolts, screws, or other adjustment mechanisms

Performance Specifications

1. Leak Rate: Zero leakage or minimal leakage (e.g., <10^-4 ml/s)
2. Tensile Strength: Up to 100,000 psi (689 bar)
3. Corrosion Resistance: Resistance to corrosion in various environments (e.g., seawater, acid, or alkaline solutions)

Standards and Regulations

1. API 6D: Specification for Pipeline Valves
2. ASME B31.4: Pipeline Transportation Systems for Liquid Hydrocarbons and Other Liquids
3. ASTM A105: Specification for Carbon Steel Forgings for Piping Applications
4. NACE MR0175: Material Requirements for Sour Service
5. ISO 14313: Pipeline Transportation Systems

Certification and Compliance

1. API Certification: API 6D certification for pipeline valves
2. ASME Certification: ASME B31.4 certification for pipeline transportation systems
3. PED Certification: PED 2014/68/EU certification for pressure equipment