Tower Crane Dismantling Method Statement Exclusive Jun 2026

A Tower Crane Dismantling Method Statement is a critical safety document that details the sequence, equipment, and precautions required to safely take down a crane . It typically follows a reverse order of erection, starting from the hook and moving down to the foundation. 1. Preliminary Preparations Before any physical work begins, specific site conditions and administrative checks must be met: Site Survey & Risk Assessment: A full site survey is conducted to identify hazards like adjacent buildings, power lines, or street furniture. Weather Monitoring: Dismantling must stop if wind speeds exceed specific limits (typically 25 km/h or 14 m/s ). Exclusion Zone: A safe zone must be barricaded, with warning signs and guards to prevent unauthorized entry. Permit to Work (PTW): Ensure all necessary permits and third-party certifications for equipment and personnel are in place. 2. Equipment & Personnel Personnel: Only qualified professionals (erectors, riggers, and signalmen) who are medically fit should be involved. Mobile Crane: A larger mobile crane (e.g., 150T or 160T) is often used to lower heavy sections like the jib and counter jib. Communication: Continuous radio or hand signal communication must be maintained between the operator, ground crew, and safety officer. 3. Standard Dismantling Sequence While specifics vary by crane model (like the Potain MCi 85 or Zoomlion 6517 ), the general top-down steps are: Hook & Hoist: Remove the hook block and reeve the hoist rope back onto the drum. Counterweights: Use a mobile crane to remove the rear counter ballast blocks one by one to maintain balance. Front Boom (Jib): Sling and dismantle the jib in sections, often using the mobile crane to lower them to the ground. Operator's Cabin & Slewing Unit: Dismantle the cab, turntable, and slewing mechanism. Mast Sections: Remove tower/mast sections one by one. If using a climbing frame (telescoping cage), it is used to lower the top sections within reach of a mobile crane. Chassis & Foundation: Finally, dismantle the base frame, outriggers, or bogies and clear all debris from the site. 4. Safety Checks During Work Balance: Always ensure the crane is in balance before unpinning major components. Use trolleying to fine-tune balance if needed. Stored Energy: Safely release any stored energy (e.g., hydraulic pressure or tensioned cables) before disassembly. Lifting Accessories: Inspect all slings, chains, and shackles—the 3-3-3 rule suggests taking 3 seconds to inspect before every lift. Tower Crane Dismantling Procedure | PDF - Scribd

A Method Statement for Tower Crane Dismantling is a critical safety document that outlines the step-by-step procedure for safely taking down a tower crane. It ensures that all personnel are aware of their responsibilities, the sequence of operations, and the safety measures required to prevent accidents. Below is a structured template and guide for producing this document. Tower Crane Dismantling Method Statement 1. Project Overview & Scope Project Name: [Insert Project Name] Crane Model: e.g., Liebherr 154ECH or Raimondi MRT 111. Location: Specific site address and crane position (e.g., TC1, TC2). Scope: The safe dismantling, lowering, and removal of all crane components from the site using a secondary mobile crane. 2. Roles & Responsibilities Project Manager: Overarching site safety and coordination. Appointed Person: Responsible for planning the lift and overseeing the lifting plan. Crane Supervisor: Controls the dismantling operation on the ground. Skilled Technicians/Erectors: Qualified professionals responsible for mechanical dismantling. Slinger/Signaller: Maintains communication with the mobile crane operator. 3. Preliminary Preparations Site Inspection: Clear the work area and establish an exclusion zone to keep unauthorized personnel away. Equipment Check: Ensure the mobile crane is inspected, has a valid Safe Working Load (SWL) certificate, and that all lifting tackles (slings, shackles) are in good condition. Weather Monitoring: Confirm work will only proceed if wind speeds are below the manufacturer's specified limits. 4. Dismantling Sequence (Top-Down Approach) The general sequence follows a reverse order of the installation: Tower Crane Dismantling Procedure | PDF - Scribd

A tower crane dismantling method statement outlines a precise, top-down sequence designed to manage risks like structural stability and high wind conditions, typically involving counterweight removal, jib dismantling, and mast section removal via telescoping or direct lift. Key safety measures include establishing exclusion zones, verifying equipment, and ensuring qualified personnel strictly follow the manufacturer's procedures. For a detailed example, see the Tower Crane Dismantling Procedure on Scribd . Tower Crane Dismantling Procedure | PDF - Scribd

Tower Crane Dismantling Method Statement: A Comprehensive Step-by-Step Guide Introduction The dismantling of a tower crane is arguably the most dangerous phase of its lifecycle. While erection attracts attention for its dramatic height increases, dismantling involves working at maximum height with partially disassembled components, often in tight urban environments. A Tower Crane Dismantling Method Statement is not just a paperwork exercise; it is a critical risk control document that dictates the safe, logical, and efficient reversal of the erection process. This article provides a detailed template and explanation of a professional method statement, covering planning, roles, equipment, step-by-step procedures, and emergency protocols. tower crane dismantling method statement

Part 1: Scope & Objectives 1.1 Purpose The purpose of this method statement is to define the systematic procedure for the safe dismantling of a [Insert Make/Model] tower crane (e.g., Potain MDT 289, Wolff 355B) from the [Project Name] site. This document ensures all personnel understand their duties, the sequence of operations, and the hazard controls required. 1.2 Key Assumptions

The crane has completed all lifting duties. The surrounding area (drop zone) has been cleared of non-essential personnel. Ground conditions are stable for mobile crane positioning. Weather forecast is acceptable (wind speed < 20 mph / 9 m/s sustained).

1.3 Reference Documents

Manufacturer’s technical manual. Crane load charts (both tower crane and assisting mobile crane). Site traffic management plan. LOLER (Lifting Operations and Lifting Equipment Regulations) or local equivalent inspection reports.

Part 2: Roles & Responsibilities | Role | Name (Example) | Responsibility | |------|----------------|----------------| | Project Manager | J. Smith | Overall authority; ensures resources are available. | | Appointed Person (AP) | R. Jones | Plans the operation; issues the lift plan; holds authority to stop work. | | Crane Supervisor | T. Brown | Directs the dismantling crew; manages communication; checks weather. | | Tower Crane Operator | M. Lee | Operates the tower crane during lowering of components; shuts down crane. | | Mobile Crane Operator | D. Clark | Operates the auxiliary mobile crane (e.g., 200-tonne all-terrain). | | Riggers / Dogmen | Team of 4 | Attach slings, guide loads, disconnect pins/bolts. | | Safety Officer | S. Grey | Monitors compliance; enforces exclusion zones. |

Part 3: Required Equipment & Tools Before dismantling begins, verify all equipment is certified and inspected. 3.1 Lifting Equipment A Tower Crane Dismantling Method Statement is a

Auxiliary mobile crane : Capacity sufficient for the heaviest tower crane component (typically the jib or counter-jib). Example: 250t all-terrain crane with luffing fly jib. Sling sets : Color-coded, certified synthetic or wire rope slings (4-leg chain slings preferred for tower sections). Shackles : Bolt-type, WLL clearly stamped. Spreader bar (if required to prevent crushing of jib chords).

3.2 Tools