METHOD STATEMENT
FOR
lightning protection system INSTALLATION
Ø TABLE OF CONTENTS
1. SCOPE
2. definitions
3. HEALTH AND SAFETY
4. OPERATION
5. installation and fixation
6. RESPONSIBILITIES
7. MANPOWER REQUIRED
8. MATERIALS REQUIREMENTS
9. EQUIPMENTs REQUIREMENTs
10. WASTE MANAGEMENT
11. SPECIAL CONTROL MEASURES.
12. SUPPORTING DOCUMENTATION
13. DISTRIBUTION
1.SCOPE
Ø This procedure to clear the method of the supply, installations for Lightning Protection System for the project.
Ø This document details the Lightning Protection System Installation:
1. Preparation of work.
2. Delivery and inspection upon arrival of material at site.
3. Installation of the system.
2. definitions
PQP : Project Quality Plan
PSP : Project Safety Plan
QCP : Quality Control Procedure
HSE : Health, Safety and Environment
MS : Method Statement
ITP : Inspection Test Plan
QA/QC : Quality Assurance / Quality Control Engineer.
WIR : Inspection and Test Request
MIR : Material Verification Record.
3. HEALTH AND SAFETY
Ø Strictly followed as per the manufacturer's Health and Safety recommendations for handling and use of the materials.
Ø Ensure all involved personnel shall be aware of the same.
Ø Specific safety measures have to follow as applicable, and all the safety measures are covered separately in the project safety plan.
4. OPERATION
Ø Material:
· Material used will be as approved by the Engineer.
· The sizes and routes routing will be as per the approved Shop Drawings.
Ø Storage and Protection:
· Deliver components parts to site, completely identified in accordance with shop and certified CAD Drawings prepared for this work.
· Store in accordance with the manufacturer’s instructions, above ground, properly protected from the weather and construction activities.
5. INSTALLATION and fixation
Ø Preparation:
· The principle components of a conventional structural lightning protection system are
1. Air Termination Network
2. Down Conductors
3. Earth Termination Network
4. Bonding
· Specification allows the use of 'natural conductors' such as rebars and structural steelwork, provided that they are electrically continuous and adequately earthed.
· Prior to install lightning protection system examine paths to ensure all areas free of debris that may interfere with the installation.
· Inventory all items immediately after unloading, using manufactures packing list.
· All the related material should be stored away from high traffic areas.
Ø Installation:
· Site survey of the proposed Lightning Protection System based on approved CSD by foreman/sub-contractor together with Engineer.
· Installation must be carried out based on approved shop drawings & samples by foreman/ sub-contractor.
· Method and material used for the installation of Lightning protection system shall comply BS6651. (Protection of structure against lightning).
· The earth electrode pits location shall be marked out on site before commencement of hammering in electrodes. The earth pits shall be near the location of the down conductors.
· Those earth pits located in the basement shall be provided with seals to prevent penetration of the ground slab.
· Electrodes are hammered into the ground and reading is taken to ensure that the resistance is less than 10 ohms per electrode.
· Lightning Protection System accessories.
· Earth termination network: The means of dissipating the current to the general mass of earth. Choose an earth electrode to suit the ground conditions in the locality of the structure. Electrodes are available in the form of rods and plates (lattice or solid)
· Earth rod clamps: Select a high copper content alloy earth rod clamp for the connection of the earthing conductor to the earth rod. In this below ground application, the clamp must ensure a good electrical contact and resist corrosion throughout the lifetime of the installation.
· Earth inspection chambers: Select an earth inspection chamber to protect the earth electrode connections.
· Bonding: Bonding is the most commonly employed method of avoiding the damaging effects of side flashing. All continuous metalwork should be considered for bonding. All metallic services, eg cable armouring, gas, water or steam piping, entering the building should also be bonded as directly as possible to the earth termination network.
· Select the correct type of metalwork bond for the application, ie a flat column face, a circular rainwater pipe or a ribbed reinforcing bar.
· Depending on the specification, the down conductor tapes can be thermal weld to the rebar and casted in the column or run in a continuous strip on the surface of the external wall.
· For casting of column, floor, continuous supervision is necessary to ensure that the tape is extended before the main builder close up form work before casting. Approved clamps to be used for extension tape.
· Down conductor network: The down conductor system is the means of carrying the current of a lightning strike safely to the earth termination network.
· Conductor fixings: Select the correct system of fixings for each part of the conductor system
· Air termination network: The air termination network is the point of connection for a lightning strike. It typically consists of a meshed conductor arrangement covering the roof of the structure.
· Use air terminals in the form of vertical air rods for the protection of prominent roof top features or equipment. Use strike pads to expose concealed conductors
· Air terminal bases: Choose the correct air terminal base. This will ensure that the vertical air rods are both solidly fixed to the fabric of the structure and have a low resistance connection to the conductor network
· Conductor jointing clamps: Select a component for the interconnection of multiple conductors or for changes of direction. Jointing clamps will ensure a low resistance, corrosion resistant connection.
· Test clamps: In order to allow periodic disconnection and testing of the earth termination network, select a test clamp to be placed within the run of each down conductor.
· After installation, Engineer- in-charge shall check the complete works and complete the inspection check list for Lightning Protection System installation works .
· Engineer-in-charge shall arrange and request for inspection with the Owner’s representative Residential Technical Officer (RTO) using approved Main con Request for Inspection (RIN) form.
Ø Technical Assistance:
· The installation supervising technician for the system trade shall instruct the CONSULTANT Engineer, and Construction Site Manager on the programming and correct operation of the system after the installation is completed.
· This instruction shall be scheduled at the convenience of the staff.
· All such instruction shall be properly recorded.
· WIR will be issued for Consultant approval upon making sure that the installation of the system equipment’s done as per approved shopdrawings and specs and manufacturer recommendations.
6. RESPONSIBILITIES
Ø PROJECT MANAGER
1. To ensure that all the preparation and application works are carried out according to the Contract Specification and with the approved drawings.
2. To ensure that the progressing of works is carried out according to the planned program and as per the approved method of statement.
3. To ensure that all the equipment and material required executing the work are available according to the planned construction program.
4. To co-ordinate with the Main contractor, MEP coordinator, Safety Officer for a safe and proper execution of the works.
Ø SITE ENGINEER
1. To ensure that the works are carried out according to the Contract Specification, approved method statement and the shop drawings.
2. To provide all necessary information and distribute responsibilities to his construction.
3. To monitor the progress of work in relation with the work program and to report to the Project Manager.
4. To co-ordinate with the safety officer and to ensure that the works are carried out in safe practicing method.
Ø FOREMAN
1. The foreman will carry out his duties by maintaining continuous coordination with the site engineer on daily basis, and ensure proper distribution of the work force on the required and planned locations.
2. To ensure that his assistant foreman/ charge hand are aware of the job requirements and they have enough information to carry out their duties properly.
3. To ensure that the daily work is progressing as planned and advice the site engineer of any requirement for additional resources.
4. To ensure in consultation with the site engineer that the manpower involved in the works are moving as agreed and planned for the work.
5. To control disposal of waste materials according to the instructions received from the site engineer.
6. To ensure full coordination with the safety officer to maintain safe working and proper house keeping of the site, following the proved safety measures and further ensure that all his working team are aware of the same to prevent accident and losses.
7. To inform the site engineer regarding areas ready for inspection.
8. Foreman and the storekeeper are responsible for the distribution and control of materials.
Ø SAFETY ENGINEER
1. Ensure the implementation of all the safety measures in accordance with the HSE plan and everybody aware of it for it’s proper implementation.
2. Ensure all the implemented safety measures are adequate to maintain safe working on the site.
3. Inspect all the site activities and train the person to prevent accidents and it’s proper implementation.
4. Ensure that the site is maintained clean and tidy.
Ø TECHNICIAN FROM SUPPILER
1. The carrying-out of work and the proper distribution of all the available resources in coordination with the sub-contractor Site Engineer on a daily basis.
2. Daily reports of the works are achieved and coordinated for the future planning with the Site Engineer.
3. Complying with the sub-contractor basic design practices, particularly those related to safety and engineering
4. Meeting with any type of unforeseen incident or requirement and reporting the same to the Site Engineer immediately.
Ø STORE KEEPER
1. Responsible for overall Store operations in making sure to store the material delivery to the site and keep it in suitable area that will keep the material in safe from rusty and damage.
2. One who will acknowledge the receiving of materials at site in coordination with QA/QC and concerned Engineer.
7. MANPOWER REQUIRED
Ø Charge hand and Experienced Technicians
8. MATERIALS REQUIREMENTS
Ø Lightning Protection System Components and Accessories
9. EQUIPMENTs REQUIREMENTs
Ø The Equipment that will be engaged for Lightning Protection works will be as follows:
- Center punch
- Brace
- Hammer
- Electrical Drill (only for surface installation works)
- Diagonal-Cutting Pliers
- Wire Stripper/Cutter with Spring
- Side-Cutting Pliers
- Level
- Shank Screwdriver
- P.P.E. – Personal Protective Equipment (safety helmet, Boots, gloves & safety vest )
10. WASTE MANAGEMENT
Ø The Rubbish which would be created from our scope of works will be disposed to the designated dumping ground.
11. SPECIAL CONTROL MEASURES
Ø The following general control measures against Safety, Environment and Quality shall be required for our scope of work and special control measures are not applicable for us :
· Proper PPE must be worn at all time
· Permit to work at height > 2m where applicable
· Lifting operation permit (using crane) where applicable.
· Confined space permit where applicable.
· Approved work method statement and risk assessment will be made available to site.
· All workers doing the work shall be briefed on this method statement and risk assessment.
12. SUPPORTING DOCUMENTATION
Ø This method Statement should be read in conjunction with the below referenced documentations:
- ITP for Anti – termite Treatment.
- Insulation Resistance and continuity Test Report.
13. DISTRIBUTION
Ø Copy of this method statement shall be issued to the following for information / action / comments:
- Project Manager
- Site Engineer
- Foremen
- Safety Engineer
- Technician From Supplier
- Store Keeper