Pipeline Equipment

Pipeline Equipment

Overview

Pipeline equipment is engineered to support​​ integrity management, operational availability, flow assurance, and safe maintenance​​ throughout the pipeline lifecycle. Mechasol provides pipeline equipment as​​ standalone items or integrated stations/skids, including pigging facilities, quick opening closures, handling systems, insulation joints, and compression packages.

Mechasol designs are driven by:

• Pipeline diameter & pig type

• Design pressure / temperature

• Fluid phase​​ (gas / condensate / crude / multiphase)

• Slugging and debris load

• Sour service requirements (H₂S / CO₂)

• Safety class & operability philosophy

• Codes & standards​​ (ASME VIII, ASME B31.3/B31.4/B31.8, API, NACE/ISO 15156, PED/ATEX)

Pig Launchers & Receivers

Pig Launchers

Pig Receivers

Temporary Pig Traps

High Pressure Pig Traps

Sour Service Pig Traps

Quick Opening Pig Traps

Pig Handling Systems

Pig Loading & Unloading Systems

Pig Signaling Systems

Pig Tracking Systems

Pig Storage & Transfer Systems

Monolitic Insulation Joints

Natural Gas Compressor Packages

Key Engineering Parameters (applies across all pigging equipment)

Process & Mechanical Inputs

• Design pressure (bar/g, ANSI class)

• Design temperature (°C)

• Line size (NPS/DN) and piggable ID

• Fluid: gas / liquid / multiphase; density, viscosity, solids content

• Corrosion allowance (CA) and erosion risk

• Sour service: H₂S partial pressure, CO₂, chlorides (ISO 15156/NACE)

• Materials: CS, LTCS, SS, duplex; impact testing requirements

• Coating/paint system (C3–C5M etc.) and insulation (if required)

Operational Inputs

• Pigging frequency (daily/weekly/monthly)

• Pig type: foam, brush, cleaning, gauging, intelligent pig (ILI)

• Pig length & weight; lifting/handling method

• Operations: manual vs assisted vs automated handling

• Required venting/depressurization philosophy

• Drainage & handling: closed drain / oily water / flare tie-in

• Safety: interlocks, LOTO, mechanical key transfer

Pig Launchers & Receivers (Pig Traps)

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Features:

• Designed to ASME B31.4 , ASME B31.8 and ASME Section VIII Div. 1 Codes

• All pig receiver and pig launcher systems come with the sand blasted and primer coated and color of your choice

• All welds are 100% inspected and tested

• All pig receiver and pig launcher systems are hydrostatically tested

• Supply of Scrapper (Pig) Traps with Quick Opening Closures

• Quick Opening Closures provided with Pressure warning device and mechanical interlock system

• Traps capable of handling specific type and no. of pigs

• Material of Construction is Carbon steel or Stainless steel as required including NACE specification

• Flow Tees, Barred Tees, Anti-spark Pig Receiving Trays

• Pig Handling System with Jib crane, etc.,

Pig traps are pressure vessels designed to safely insert/remove pigs for:

• Cleaning & debris removal

• De-watering / drying

• Batch separation

• Inspection (ILI tool runs)

• Commissioning (gauging, caliper pigs)

Core Design Elements

• Barrel + reducer (concentric/eccentric based on flow/slugging)

• Closure (quick opening or bolted blind)

• Pig support & guiding (internal skid rails/guide bars)

• Kicker line & valves (launcher) / bypass / equalization (receiver)

• Drain, vent, pressure gauge points, bleed ports

• Pig signaller & pig passage indicator ports

• Nozzles for instrumentation and safety devices

Typical piping & valves

• Mainline isolation valve(s)

• Kicker line valve and restriction device (orifice/RO)

• Equalization/bypass valve

• Vent valve to flare/safe vent

• Drain to closed drain / drain pot

Options

• Pig loading tray / insertion assist (manual or hydraulic)

• Nitrogen purge/blanketing connections

• Debris catcher basket / internal strainer arrangements

• Full-bore vs reduced-bore kicker design

Selection notes

• High pigging frequency → prefer quick opening closure + handling aids

• High solids → larger barrel, internal debris management, erosion lining

Typical receiver functions

• Energy dissipation and pig arresting

• Safe depressurization and drainage

• Pig removal and storage transfer

Options

• Pig arrestor / catcher (mechanical)

• Integrated pig unloading cart and rails

• Dedicated slug handling sump / drain pot

• Debris collection section

Selection notes

• Intelligent pig receiving: ensure sufficient barrel length and pig deceleration; avoid pig damage.

Temporary Pig Traps

Used for:

• Construction/commissioning pigging

• Hydrotest cleaning & gauging

• Short-term operations

Typical features

• Skid-mounted, modular support frame

• Rapid tie-in spools

• Simplified instrument set

• Quick mobilization and demobilization

High Pressure Pig Traps

Designed for high-class ratings:

• ANSI 600 / 900 / 1500 / 2500 equivalent

• Thick wall barrel and closure neck

• Reinforced nozzle pads and support saddles

Engineering emphasis

• Closure safety integrity under high stored energy

• Controlled venting and depressurization time

• Stress evaluation (local loads at closure/nozzles)

Sour Service Pig Traps

Designed for sour gas / sour multiphase:

• Material selection per ISO 15156 / NACE MR0175

• HIC/SSC resistant steels (as required)

• Controlled hardness and weld procedure qualification

• Coating system suited for sour and external marine atmospheres

Options

• Corrosion monitoring ports

• Chemical injection points for inhibition

• Internal coating / CRA cladding options by service

Quick Opening​​ Closures (QOC)

Quick opening closures are the​​ critical safety component​​ of pig traps. Mechasol provides multiple closure designs, selected based on pressure class, opening frequency, required safety level, and operator ergonomics.

Types

A) Hinged Clamp Ring Closure (Segmented / Split Ring)

• Fast operation with clamp segments

• Very common for frequent pigging

• Good for mid-high pressure depending on design

B) Breech Lock Closure (Bayonet / Lug Type)

• High integrity mechanical locking using lugs

• Suitable for higher pressures and frequent cycling

• Robust and reliable for harsh conditions

C) Yoke / Fork Type Closure

• Mechanical yoke applies closure force

• Good for moderate pressure and quick access

• Often chosen where simplicity is required

D) Threaded Plug Closure (Limited use)

• Screw-type cap; slower but robust

• Typically for smaller sizes or special services

E) Bolted Blind / Studded Cover (Not “quick”, but relevant alternative)

• Highest simplicity and familiarity

• Used when opening frequency is low

• Longer maintenance time

F ) Quick Opening Closure with sector locking system ( SECTOR TYPE )
Composed from 2 forged pieces: Hub and cover.The opening / closing is performed by acting on a rapid mechanism which locks / unlocks the sectors.

Mechasol can provide​​ manual,​​ assisted, or​​ hydraulic/pneumatic actuator-aided​​ closure mechanisms depending on size and required ergonomics.

Safety Interlock Systems (Non-Negotiable)

Every quick opening closure must prevent:

• Opening under pressure

• Pressurization when not locked

• Incomplete locking condition

Typical interlocks

• Pressure warning device (PWD) / bleed lock

• Mechanical key interlock system

• Positive locking indicators (visual + mechanical)

• Sequenced venting requirements (cannot unlock until vented)

Selection Parameters for Quick Opening Closures

• Pressure class and nozzle neck design

• Opening frequency (daily/weekly/monthly)

• Closure size (operator handling)

• Corrosion/sour service (materials, seals)

• Ambient environment (marine / desert / arctic)

• Required safety philosophy (key interlock vs smart sensors)

• Maintenance strategy (seal replacement intervals, spares)