Method Statement For the Installation of Cable Racks, Trunking, Tray, Ladders & Conduits
Introduction:
To ensure that the installation of cable Racks, Trays, Trunking, Ladders and Conduit system and related activities are executed safely and in accordance with the contract requirements and that all quality assurance/ control activities required for the same are conducted in a systematic manner, works are inspected and conformance is verified and documented.
SCOPE:
This method statement describes/ defines the procedures involved in the in the installation of cable Racks, Trays, Trunking, Ladders and Conduit System.
REFERENCES:
- Electrical Approved Materials & Equipment (Data sheet/ Submittal)
- Approved Electrical power Project Drawing
- Project Specification, United States Standard, IEEE Standard & Etc. Local Law 21-2011 Waste Management.
- FIRE AND LIFE SAFETY CODE OF PRACTICE July 2018.
- Federal Law No.8 Regarding the Organization of labour Relations.
- Ministerial Order No.32-The Determination of Retentive method and measures for the protection of workers from the risk of the work (the ministry of labour and social affairs)
- OSHAD-RF & SF – Specific & Relevant COPs, Elements, and Mechanisms to be listed down based on activities and scope of work which will vary for each risk assessment.
OSHAD SF COP’s Version 3.1 July 2018.
- Ref OSHAD-SF Cop 34 Safe Use of Lifting Equipment and Lifting Accessories
V 3.0 July 2016.
- Ref OSHAD-SF Cop 14 Manual Handling and Ergonomics V 3.1 June 2017.
- Ref OSHAD-SF Cop 8.0 General Workplace Amenities V 3.1 June 2018.
- Ref OSHAD-SF Cop 2.0 Personal Protective Equipment V 3.1 June 2018.
- Ref OSHAD-SF Cop 15 Electrical Safety V 3.1 June 2017.
- Ref OSHAD-SF Cop 21 Permit to Work Systems V 3.0 July 2016.
- Ref OSHAD-SF Cop 23 Working at Heights V 3.0 July 2016
- Ref OSHAD-SF Cop 26 Scaffolding V 3.0 July 2016.
- Ref OSHAD-SF Cop 35 Portable Power Tools V 3.0 July 2016.
- Ref OSHAD-SF Cop 37 Ladders V 3.0 July 2016.
- Ref OSHAD-SF Cop 15 Mechanical Safety V 3.1 June 2017.
- Ref OSHAD-SF Cop 11 Safety in the Heat V 3.1 June 2017.
- Ref OSHAD-SF Cop 8 General Workplace Amenities V 3.0 July 2016.
DEFINITION:
PVC – Poly- vinyl Chloride
RESPONSIBILITIES:
Project Manager:
- Overall responsible for the implementation of this method statement
- Responsible for ensuring that the work is performed in accordance with the specification and with the time & constraints.
- Coordinate with MEP Coordinator (Contractor) for obtaining the necessary resources for the project deployed as required.
- Submit progress report as per contractual requirements to Main Contractor.
- Ensure that all required submittal are made in timely manner.
- Coordination with the Contractor, Company, Engineers, Safety personnel and subcontractor for the safety and quality during the execution of the project.
Site Electrical Engineer:
- Ensure that the activities are carried out according to the Specification, drawing and approved Method Statement.
- Ensuring Submittals and Company approval on relevant MEP drawing/ Material/ Suppliers/ Subcontractors/ Method Statement and Quality/HSE Documentation.
- Arrange all materials and tools required for installation as per agreed project schedule.
- Coordinate to MEP Coordinator & Construction Manager for obtaining the necessary resources for the project & deploy as required.
- Provide all necessary information and distribute the responsibilities to his construction team.
- Monitor that all in process tests are carried out and obtained approval from Client/ Main Contractor/ Consultant.
- Monitoring & ensuring that the works is performed in accordance within the time and cost constraints.
- Coordinate with the Safety Engineer to ensure that the works are carried out in a safe working practice.
- Pass all the revised information to the site General foreman and ensure that it’s being carried out properly for entire MEP System.
- Ensure all Mechanical work activities are in conformance with approved shop drawings, contract requirements/ specification, and Method Statement.
- Ensure that relevant and required Materials are requested on time in correct quantities.
- Provide Approved Shop drawings to site Engineer for proper site Installation.
- Advising Site Engineer on all Technical aspects regarding work methods, sequence of installation, testing and commissioning.
- Follow up site activities and ensure all relevant non-conformance issues (if any) are resolved and cleared out. Communication with QA/QC Engineer and HSE Engineer for preventive and corrective actions.
- Coordinate the progress of main contractor works to ensure installations of MEP works are considering preventive and corrective actions.
- Coordination with other Contractors/ Company to provide solutions affecting design development / Coordination matters.
- Responsible for the coordination of all electro-mechanical activities, coordination with other discipline and between various subcontractors on sites.
- Reviewing of MEP daily, Weekly & Monthly progress reports.
- Ensuring MEP subcontractor Payment Certificates are reviewed and approved for payment.
- Responsible for all related activities prior to completion of the project
Charge-hand/Foreman:
- Carrying out the works and the proper distribution of all the available resources in coordination with the Site Engineer on a daily basis.
- Continuous coordination and following Site Engineers instruction to meet quality requirements during the job execution.
- Incorporate all the QC & Safety requirements as requested by the company’s representative.
- Report to Site Engineer the accomplishment and problem encountered on daily basis.
QA/QC Department:
- Ensure all Inspections are raised and conducted as per the Contract Specifications, PQP, & ITPs.
- Ensure all Inspections, proper tools & tackles and manpower are used at all stages of work.
- Ensure Call current issues of procedures, approved material and shop drawing and standards are available at the point of use.
- Ensure the works comply with the contract requirements/ approved shop drawings to serve the purpose.
- Ensure the Total quality for Installation work. He shall liaise with Company for Inspection of Installation works.
- Inspect for any damages during handling, & Storage.
- Monitor the quality of work and ensure that fulfillment of specified requirement and that all quality records related to work are completed.
- Ensure the work is completed as per quality requirements. Contractor shall inspect the same work to initiate ITR for company approval.
- Maintain comprehensive inspection and test records for any further references.
Safety Officer/ Engineer:
- Tool Box talk has to be conducted and all the hazards have to be identified before starting the work.
- To make sure that the Personnel Protective Equipment (PPE) are used by the Task Force during executions of work at site.
- Risks related to the activity shall be assessed and addressed as required.
- To provide training for the work force in order to execute the activity safely.
- Carry out regular and random inspection on site and record observations.
METHOD OF WORK:
Material:
- Cable Racks
- Cable Trays
- Cable Trunking
- Cable Ladders
- Conduits & Fittings, boxes, supports, anchors, sleeves, hangers, clamps, straps, seals, flexible connections to vibrating equipment and accessories.
Equipment/ Tools:
- Cutting Machine
- Drilling Machine
- Hand Tools-(Spanner, measuring tape, pliers, screw drivers, wrench, etc.
Pre-Installation Procedure:
- Ensure all materials to be used in this installation are as per approved material submittal.
- Ensure that approved shop drawings are available at the installation site.
- Temporary material storage at site shall be clean, free from debris that may cause damage to the material.
- Coordination with other services have been taken to avoid clashes, blocking the routings of other trades.
- Separate trunking will be used for low current cables / wires from those of power cables and wires.
- Proper marking on site to be done prior to commencement of installation works.
- Plan ahead and make sure that all containment to be accessible for future maintenance purpose.
Handling And Storage:
- The materials received shall be offloaded in designated lay down yard store.
- During shifting or offloading material shall not be dropped off. Proper Lifting and transporting equipment shall be used as required.
- The material shall be stored according to the manufacturer’s instruction to minimize damage.
- All material shall be segregated accordingly to facilitate location of the
- Prior to moving to site, Chillede Water Pumps will be checked against data sheets to ensure conformity to the specification.
- QC inspector and Supervisor will check the following (scrutinize and examine Documents and units); Fan and Motor, type, model, ratings, components and installation complied with specifications, capacity, vibration and sound level, unit controls, unit operation, power supply, enclosure, unit openings for supply ducts, cooling coils, type of filters, all of these will be checked and recorded in MVR form, inspection will be witnessed by the consultant.
- Where equipments are to be held in a storage area, particular attention will be paid to the condition of instruments and devices installed on the panel fascias. AC Units and fans shall be stored and handled in accordance with manufaturer’s Instructions.
- Where equipment or equipment section are sealed to prevent ingress of moisture or dust, this shall not be disturbed unless physical damages observed.
- Equipment received at site shall be inspected and approved in accordance with Material Approval Request form.
Installation Procedure:
Installation Methods for Cables Racks, Trays, Trunking, Ladders & Conduits:
- Cable trays, raceways, containment used must have a smooth surface to avoid damaging the cables and wires during pulling.
- Cable rollers are to be arranged at bends / risers and on appropriate distances according to the minimum bending radius of cable (largest in size) at the same route.
Preparation of Cable trays/trunking/ladder installation prior to cable pulling:
- Cable trays, raceways, containment used must have a smooth surface to avoid damaging the cables and wires during pulling.
- Cable rollers are to be arranged at bends / risers and on appropriate distances according to the minimum bending radius of cable (largest in size) at the same route.
Cable Trays/trunking/ladder Identification:
- Cables and cable trays, raceways shall be positively identified, in accordance with the drawings.
- Identification and markings be done in accordance with the project specifications.
- Where references are not provided in any case a system shall be adopted as agreed with the Customer and recorded on the “As Built” drawings
Cable trays/trunking equipotential bonding:
- All cables trays must have an equipotential bonding and to be tested with continuity using calibrated testing instruments as per specifications or otherwise according to the standard practice.
GI Cable Trays and trunking in the Roof Area:
- All the supports in the roof area will be provided as per the approved roof coordinated MEP services installation details drawings.
- Pedestal will be provided for the floor mounted supports for the cable trays and trunking.
- All the supports for the roof area floor supports shall have the mounting legs with the opening (holes) for the fixing.
- Cable trays and trunking installed at the roof level will be covered with the cable tray covers according to the size of the cable trays and trunking. (For the top layers only which is exposed direct to sun).
- All the cable trays and trunking covers will be secured with proper clamps or screws fixed with supports.
- Ensure the gaps between the trays which are mounted in the tires are sufficient for the cable laying as per the approved installation detail drawings.
PVC Conduits Installation for concrete embedment:
- Location of PVC circular junction boxes or other junction boxes as per approved shop drawings will be marked on the shutter when it is made ready.
- All such junction boxes will be fixed on the shutter based on the marking and continuous conduiting will be carried out with standard conduit lengths, couplers etc.
- Where bends or offsets are required, the straight conduits will be manually bent without flattening or denting using suitable helical bending spring to the required radius (to suit site conditions).
- Wherever conduits and accessories are required to be joined, manufacturer recommended solvent cement would be used.
- Expansion couplers will be used where conduit crosses structure expansion joints.
- Also, the conduits and junction boxes will be plugged and covered appropriately to prevent ingress of water / concrete during casting of slab.
- Entire runs of conduits will be tied to the reinforcement firmly with tie -wire in order to avoid movements during concreting.
- After de-shuttering, all conduits and boxes will be cleaned and checked to commence the wiring.
- All conduits concealed into the block work / plaster will be covered with minimum 15 mm concrete / plaster cover along with entire length.
- PVC conduit run in the floor screed shall be fixed to concrete / block work using suitable GI wire.
- Drawn-in boxes must be provided to give access to all conduits for the drawing-in or out of any cable after the installation is completed and should not be spaced more than 9 meters on straight runs. On runs with not more than two right angles bends the spacing between draw-in boxes shall not exceed 7 meters.
- Attendance during concrete pouring shall be provided to ensure that conduits and boxes are not displaced.
Pre-Commissioning and Commissioning Checks:
- Ensure that all equipment included, should be thoroughly cleaned and checked.
- Ensure that all foreign debris is thoroughly flushed out from the whole pipework system.
- All automatic controls and safety devices shall be inspected and checked for service before the working fluid or electricity ability is applied to the system.
- When various installations have been completed and pre- commissioning has been done, setting of work is to be carried out in the entire installation prior to the issuance of completion certificate.
- Ensure that all apparatus are working as per specification.
- Ensure that all instruments are correctly calibrated and accurate.
- Ensure that all services are tested and control systems are functioning correctly and are properly set, sequenced or interlocked.
Final Acceptance Test:
- After the commissioning of the entire installation, final acceptance tests shall be carried out prior to the issuance of Performance Certificate in accordance with the programmed to be agreed with the Consultant.
- Should the results of the acceptance Test do not conform to the required performance, adjustment and modification to the system is necessary to be carried out.
- Prior to the issuance of Certificate of Completion, tests shall be carried out whenever required by the authorities having jurisdiction over the said performance tests.
Health Risk Assessment:
- All the above operations shall be executed strictly in accordance with Project Occupational Health, Safety, Security and Environmental Plan.
- Prior to the commencement of any activities, the workforce will receive a safety induction on the project site safety requirements; this safety induction will include Project HSE Policy, Project details and layout, Site management team, general site HSE requirements, emergency procedure including Emergency contact numbers, Roles and responsibilities of the workers, Site discipline, general environmental awareness, PPE requirements.
- The HSE roles and responsibilities shall be delivered to all staff (construction manager, engineer, supervisor, foremen, and charge hand).
- Work will commence as per safety regulations laid in the contract specifications and project safety plan.
- Housekeeping shall be of good standard and debris shall be removed.
- All activities will be performed according to the control measures and instructions prescribed in the attached Risk Assessment Sheets.
- Daily JSA will be done before the commencement of each shift and each new task.
- All Vehicles will have valid licenses and passes before entering the site.
- PPE shall be issued to all personnel (Mandatory PPE’s: Hard hat, Safety glass, high visibility vest, Safety shoes and cover all. Task specific PPE; Dust mask, goggles, hand gloves).
- Specific training shall be given for task specific tools and equipment’s; records shall be kept in HSE department.
- Heat stress training will be provided during summer time, records shall be kept in HSE department.
- Adequate cool drinking water, shade and hydrolyte shall be placed.
- Plant and equipment shall have back up alarms, lights and all other applicable safety devices.
- Provide Banks man when operating equipment reverse and moving the equipment where pedestrian movement is exist.
- Work on site will be supervised by a competent person (Qualified SE)
- Safety Lighting
Emergency Procedures:
- Contact numbers of personnel concerned to be displayed.
- Emergency response team to be designated and on standby:
- All emergency contact people are posted around the project and are being discussed during site safety meeting.
- Emergency routes and exists to be clearly marked.
- 1 vehicle with one driver will be available for any emergency.
- Requirement of the Project Emergency Preparedness and Response plan shall be strictly followed.
- In the event of an accident, contact the area HSE Supervisor.
- In case of Diesel Spillage contact the Environmental department.
- Easy means of access will be available at all time.
- Contact numbers of all emergency supervisors will be distributed to site personnel (Site engineer, Safety officer, male nurse and concerned authorities and emergency services).
- Injuries will have the highest priority to be directly dealt with at once.
- There are different types of situations that we need to consider under this section. These are:
- Basic first aid
- Medical
- Property damage
- Environmental releases
- Fatality
- Fire
- The nominated response team will consist of:
- Site nurse
- Safety Engineer/Officer
- Site Superintendent/Foreman
- 4no of operatives
- Basic first aids
- The injured person, if mobile, can make his way to the site clinic for treatment by a qualified site nurse that is available and logged in the first aid register.
Medical:
Under this section, there are two categories that we need to consider. They are as follows:
(1)- Conscious
If the patient is feeling un-well, he will immediately inform his supervisor and go to the site clinic to be assessed by the site nurse. The site nurse will then advise, or the patient will require further examination and he will be taken to the hospital.
(2)- Unconscious
If the patient had collapsed during his work, alarm must be raised to inform the response team. The team will then respond accordingly by the quickest possible way arriving at the location of the incident. Along with them, they will bring a first aid kit, an emergency stretcher and an emergency vehicle. Once they are on the scene, the site nurse will assess the patient and the team will then take the patient on the stretcher either to the site clinic or to the local hospital.
- Electrocution:
- If you see someone lying unconscious or “froze on the circuit,” the very first thing to do is shut off the power by opening the appropriate disconnect switch or circuit breaker. Don’t touch another person being shocked, If the power disconnect switch cannot be located quickly enough, it may be possible to dislodge the victim from the circuit they’re frozen on to by prying them or hitting them away with a dry wooden board or piece of nonmetallic conduit.
- Once the victim has been safely disconnected from the source of electric power, the immediate medical concerns for the victim should be respiration and circulation (breathing and pulse). Call nearest First aider to apply first aid to the electrocuted person. If a victim is still conscious after having been shocked, they need to be closely monitored and cared for until male nurse arrives.
- Rescue from Height:
- There will be rescue team with emergency rescue kit readily available at site in case of “Rescue from Height” is needed. The rescue team members are chosen from scaffolding team that has no acrophobia and has enough experience on working at height.
- Emergency response drill should be conducted as per Project Emergency Drill Schedule.
- Only the competent personnel will be allowed to install the system who has experience and trained by the supplier.
- Environmental:
- Working areas will be kept free as practicable from construction debris and equipment’s which are not actually in use.
- Proper access to the work areas should be maintained all the time. Particular attention to be paid to environmental hazards such as excessive dust emission, excessive noise from equipment, unpleasant odor of material or chemical to be used, etc. Hence a corresponding control measure will be performed as below mentioned but not limited on it:
- Water spraying for dust control
- Noise level monitoring
Complied with the materials safety data sheet recommendation regarding environmental aspect/impact of the material to be used.
ATTACHMENT:
- Inspection & Test Plan
- Inspection Checklist for the Installation of Cable Racks, Trays, Trunking, Ladders And Conduits
- Risk Assessment
- Quality Control Procedures
