KOC.sa.023 - Demolition Work Safety Procedure

KOC.SA.023 - Demolition Work Safety Procedure Page 1 of 11

Demolition Work Safety Procedure Document Number: KOC.SA.023 Approver: (Technical)

Manager Engineering

Author:

TL Safety

Approver: (Administrative)

Manager HSE

Document Coordinator:

TL Standards

Scope:

All KOC Directorates

Control Tier:

3

Issue Date: Revision/Review Date:

August 14, 2006

Issuing Group:

HSE Group

September 21, 2011

Next Review Date:

September 20, 2014

1.0 Purpose/Scope The purpose of this document is to provide guidance on the monitoring and control of demolition activities, ensuring these activities are accomplished safely and in accordance with regulatory and KOC requirements. This document applies to KOC and its contractors involved in demolition work including but not limited to buildings, structures, pipelines, tanks and other facilities. The following hazards shall be addressed:  Falls of men, falls of material, flying material and debris  Collapse of the building or structure – deliberate or unplanned  Overloading floors or the structure with debris  Explosion in tanks or confined space  Live electric cable, gas, water and other services  Presence of hazardous substances e.g. asbestos, lead, flammable materials, silica, etc.  Projecting nails, broken glass, metal and wood  Fire  Dust formation  Vibration to adjacent facilities  High noise from equipment e.g. compressor, jack hammer, etc.  Faulty Heavy Lifting Equipment/Machinery/Tools  Unskilled manpower

2.0 Definitions Demolition Wrecking, razing and rendering movement or removal of a structure or mass of materials by means of tools, equipment or the placement and discharge of explosives.

3.0 General Requirements 

KOC HSEMS Element HSE-05-11

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4.0 Key Responsibilities 4.1 Asset Owner 

Ensures that the demolition activity is properly planned and all preliminary tasks have been carried out to ensure the facility / building can be demolished safely. It will be necessary to ensure that all hazards are identified and communicated to the demolition contractor and that consideration is given to adjacent facilities or on-going operations in the area.

4.2 Controlling Team         

Ensures the competency of demolition contractor by reviewing their past project’s HSE performance records as well as their HSE policies and procedures. Ensures that all operations involve in the demolition activities are carried out in a safe and efficient manner. Reviews & approves submitted risk assessment and method statement by contractor. Ensures that all applicable safety precautions are identified in the Permit to Work and these are implemented prior to and during the demolition. Ensures that equipment used in demolition meets the requirement of the hazardous area classification. Ensures that the developed plan and procedures addresses all possible emergencies during demolition activities. Ensures that positive isolation and physical protection (when required) including risk assessment for all services are done. Ensures that all necessary safety equipments are provided. Ensures contractor compliance to the agreed demolition activities.

4.3 Demolition Contractor      

Ensures that a risk assessment has been carried out for the work by the competent person, a method statement, detailed work program and schedule are prepared and agreed with the Controlling Team. Ensures coordination of all demolition efforts and interface with various crafts & support personnel involved in the demolition activities. Ensures that all operations involve in the demolition activities are carried out in a safe and controlled manner with full compliance to permit to work system and company procedures, standards, etc. Ensures knowledge and compliance to the agreed method statement and strict implementation at site during demolition activities. Ensures that emergency plan / procedure is prepared and understood by the work force. Provides security, safety equipment, training related to the hazard to the work force.

4.4 Permit Authorities 

Ensure that all necessary permits and authorizations are obtained and all applicable safety precautions are identified in the Permit to Work and these are implemented prior to and during the demolition.

4.5 Asset / Directorate HSE Team  

Assists in reviewing and approving the submitted method statement and risk assessment, as well as provides advice on consulted HSE issues during all stages of demolition activities, from preparation to completion. Carry out periodic inspections /audits to ensure compliance with this procedure.

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5.0 Procedure 5.1 Demolition Survey A survey shall be conducted to identify any on surface and underground hazards associated with flammable materials, hazardous substances and live services. The survey shall take into account any sensitive adjoining properties likely to be affected by the works such as hospitals, telephone exchanges and industrial premises containing equipment sensitive to vibration or dust, so that any restriction on the use of demolition methods involving falls of material or felling of structures may be defined. Similar considerations shall be made in relation to noise and possible affected 3rd parties. A record of services shall be included. 5.2 Method Statement A method statement shall be prepared by the demolition contractor, which must be site specific and not generic. It must be submitted for approval to Controlling Team. Work shall not commence on the demolition project until the work plan has been agreed by all parties. The method statement shall outline the precautions to combat the hazards, protect workers / property at site and removal of hazardous materials, taking into account the findings of the demolition survey. The method statement shall identify problems and their solutions, and form a reference for the site supervision. The method statement shall be easy to understand, shall be known to all levels of the management and supervision. It may include but not limited to: 

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The sequence and method of demolition or dismantling of the building or structure with details of personnel access, working platforms , machinery requirement and lifting & rigging arrangements ; Specific details of any pre-weakening of structures which are to be pulled down or demolished with explosives (ensure only authorized and qualified persons to handle and use explosives). Arrangements for the protection of personnel and the public and the exclusion of unauthorized persons, with details of areas outside the site boundaries that may need to be controlled to improve safety during critical aspects of the work. Details of the removal or making safe of electrical, gas and other services and drains. Details of temporary services available or required to be used. Details of methods for dealing with flammable materials and gases which may have been retained or deposited as residue in process machinery, pipe work or storage. Details of methods to control the health and the environmental risks from hazardous substances, including methods to be used for their disposal. Arrangements for the control of site transport used for the removal of demolition debris and to identify waste materials treatment/dumping site, after liaising with KOC and Environmental Public Authority. Identifying persons with responsibilities for the control and coordination of safety arrangements. Arrangements on the need of fire fighting equipment and first aid personnel on site. Details of the required safety equipment.

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5.2.1 Communicating Method Statement Method statement shall be properly communicated to all concerned / involved parties i.e. all levels of management, contractors and in particular the supervision as well as workforce at the worksite. A copy of the method statement must be provided to the worksite supervisor and always be available at site for their reference and use as;  

Site Instruction Notification. Daily Safety Tool Box talks to discuss the identified hazards and precautionary measures prior to starting their work.

Figure 1.0 Demolition Work Flow Diagram

Planning & Preparation

Conducts Preliminary Assessment

Communicates hazards & provides record of services

Reviews & Approves Method Statement & Risk Assessment

Coordinates with all Groups involved in Demolition

Monitors Demolition Activities

Demolition Contractor

Conducts Demolition Survey

Prepares & submits Risk Assessment, Method Statement, Detailed Work Plan & Schedule

Asset/Directorate HSE Team

Assists in the review of Method Statement & Risk Assessment

Asset Owner

Controlling Team

Advises on consulted HSE issues

Executes Demolition as per Method Statement

Carry-out inspections and audits

5.3 General Considerations and Precautions The demolition work activities shall at all times be carried out in accordance with relevant KOC HSEMS Procedures and internationally accepted good safety practice e.g. BS 6187:2000. It shall ensure that all personnel involve in the demolition activities are competent for the task required of them. KOC Permit to Work System shall be fully adhered to. All supervisors required to work under the Permit to Work System undergo Permit to Work training prior to commencing work and workers to have awareness during their induction training. 5.3.1 Protection of Personnel Fence shall be erected enclosing the demolition operation. The fence shall not be less than 2 M high and shall not be capable of being easily climbed. Access gates shall be secured outside working hours. Warning signs shall be installed along the fence.

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At sites where it may not be reasonably practicable to erect a perimeter fence, it shall be ensured that excavations are fenced, vehicles and plant are effectively immobilized and gas and electricity supplies are isolated or enclosed in locked compounds. Outside of working hours, ladders which provide access from the ground to the fist landing place shall be removed and stored in a secure area. Where necessary, debris fans and facade netting shall be provided to prevent persons being accidentally struck by falling objects. Debris fans shall not be used as a means of access or allowed to become loaded with debris. 5.3.2 Services The Demolition Survey shall have noted the location of all known services on and adjacent to the site whether they are overhead or underground. Drawings and records of the locations of services shall be obtained in advance to arrange the dismantling, disconnection or diversion of apparatus as appropriate. Hoardings and fences shall be erected with due regard to existing services and in such a manner as to maintain access at all times to fire hydrants, valves, jointing chambers etc. 5.3.3 Temporary Electrical Services Temporary electrical services shall be installed in compliance with relevant KOC Engineering standard (electrical) and National Electric Code (NFPA 70). 5.3.4 Flammable Materials and Gases The demolition survey shall define the previous use of all tanks, pipe work and other plant. Prior to work on tanks, pipe work and other such plant, an assessment for fire and explosion risk shall be undertaken in conformance to KOC.SA.004 - Permit to Work Procedure section 5.13 - Worksite Preparation and other applicable HSEMS Procedures such as KOC.GE.029 - HSE Procedure for Decommissioning, De-sludging, Cleaning, Maintenance and Re-commissioning of Storage Tanks, KOC.SA.015 - Breaking of Flanges on Pipework and KOC.SA.007 - Entry Into Confined Spaces. Where possible, the tank shall be thoroughly inspected to identify damaged or heavily corroded areas, which may cause lack of stability during removal of demolition. The condition of the tank may influence the method of disposal. Emergency services access shall be maintained at all times during the work. Persons not directly involved with the work shall be kept well away by provision of suitable barriers. 5.3.5 Asbestos It must be assumed that asbestos may be present in any building scheduled for demolition and that necessary investigations are carried to identify the location and asbestos type. This must be carried out during the initial survey and any asbestos identified must be removed in a controlled manner before general demolition work commences. HSEMS Procedure on Asbestos Handling and Removal, KOC.HE.005 and H & E Guideline No. KOC – 1130 on Asbestos Safety should all be fully complied with. The contractor shall provide suitable respiratory equipment; protective clothing and headgear to the workers involved in such activities. The necessary training shall be imparted to the workers on respiratory equipment in this regard. The respiratory equipment used by an individual must not be worn by another worker unless it has been thoroughly Control Tier 3

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cleaned and disinfected. The respiratory equipment & protective clothing shall be kept in a proper place. The protective clothing should be cleaned before returning to the storage facility. The contaminated clothing shall be kept inside a dust tight container, with posted warning "ASBESTOS – CONTAMINATED CLOTHING" before it is dispatched for cleaning or disposal. The worker must take extreme care, while removing the facemask or respirator to prevent falling of asbestos dust inside the mask. It is advisable to remove exterior dust with hand held vacuum cleaner before removal of mask. Similarly the care shall be taken while removing protective coverall to avoid dust cloud. The work area including machinery, apparatus, benches, ventilation equipment, flooring, walls and ceilings etc. must be kept free from any asbestos dust or waste. The person deployed for cleaning must wear suitable respiratory equipment and protective clothing. A vacuum cleaner should be used to prevent escape of asbestos dust. Any loose asbestos or asbestos waste must be kept in a dust tight receptacle for safe disposal to the approved facility such as Shuaiba Waste Disposal Facility. A clearly visible warning such as "BLUE ASBESTOS - DO NOT INHALE DUST” must be posted on receptacle containing crocidolite. It is recommended to take approval from Medical Group prior to commencing any activity that involves use of crocidolite (blue asbestos) including removal of lagging materials containing crocidolite. 5.3.6 Radiation Substances Where demolition of premises or plant contaminated with radioactive substances is to take place, the following action shall be taken:  

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Clear all personnel from the immediate vicinity to a safe area and post warning notices. Do not touch the source and inform the concerned teams (i.e. respective area Fire Station, HSE Team, Inspection & Corrosion Team) for necessary assistance. The services of professionals shall be sought to decontaminate the area and safe retrieval of the radioactive source. If possible, cover the exposed source with a tarpaulin, or plastic bucket to prevent dust being windblown. Do not wash down until decontamination personnel arrive.

If fire occurs in the source storage area and it is not possible to extinguish the source, the following action will be taken, if the source container is damaged: 

Remove, if possible, the source from the fire area. If it is not possible, spray water to keep the source cool and prevent melting of the container shield. Such operations should be carried out at least 3 meters away from the container and behind a protective cover to provide shielding from radiation.

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When the fire is extinguished, leave the source at its location, post warning notices and seek expert advice.

In case a radioactive source container is missing, it has to be dealt as an emergency and should be reported to Emergency Control Center (ECC) – 160 as per clause 2.7 of KOC Corporate Emergency Response Plan (KOC.GE.026) and to be handled as per clause 5.12 of Radiation Hazard Control Procedure (KOC.HE.012). Control Tier 3

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All persons exposed or suspected exposed must be medically examined. The person exposed / suspected exposed to excessive radiation dose must report to Medical Department for thorough examination. 5.3.7 Other Substances Hazardous to Health All hazardous substances shall be identified and removed before any demolition work is carried out. The demolition procedure must take into account the risks from exposure to airborne dust, metal cutting fumes and other noxious vapors and gases resulting from the demolition work. The control measures should be compliant with the Control of Substances Hazardous to Health (COSHH) Regulations 2002. 5.3.8 Sequence of Demolition Ensure that a sequence of operations is established which allows debris to be cleared on a regular basis so that floors are not overloaded and horizontal pressure on walls is avoided. 5.3.9 Restricted Areas and Safe Distances The method statement must identify areas where access will need to be restricted. Restrictions and control shall be necessary during:     

the dropping of debris the operation of demolition plant pre-weakening activities deliberate collapse or pulling over of buildings the use of explosives and construction equipments

During debris dropping, a minimum radius of 6m or half the drop height (whichever is the greater) shall be used to determine the restricted area to be kept clear. Similarly, It shall be ensured that operation demolition equipment be allowed with a distance of 6m minimum from the edge of the building to be demolished. When tall structures are being felled, a distance of not less than one and a half times the total height shall be allowed from the proposed line of fall to cater for parts coming free in flight, or bouncing and rolling on impact. Structures shall be felled into clear areas, on slender structures, a 20 degree arc either side of the line of fall shall be clear of obstruction and an area of radius not less than one and a half times the total height shall be cleared of persons before the actual felling.

6.0 Key Documents / Tools / References  

KOC Standard for Hazardous Area Classification, KOC-G-002 HSEMS Permit to Work Procedure, Doc. No.: KOC.SA.004

7.0 Abbreviations      

HSE – Health, Safety & Environment HSEMS – HSE Management System KOC – Kuwait Oil Company H&E –Health & Environment BS –British Standard NFPA – National Fire Protection Association

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8.0 HSE Records (Retention Period)  Applicable Work Permits (Refer to Permit to Work Procedure, KOC.SA.004 for complete details)  Pertinent JSA records (Refer to Job Safety Analysis procedure, KOC.SA.024 for complete details)  Relevant Transmittals and Correspondences (5 Years)

Review and Revision Log Review/ Revision Date

Document Approver

Document Author

21 June 2006

Manager HSE

14 August 2006

Manager HSE

06 July 2009

Manager HSE

Team Leader Safety

21 Sept. 2011

Manager Engineering

Team Leader Safety

Team Leader Safety Team Leader Safety

Revision Details Drafted for review & approval Reviewed & approved by the HSEMS Implementation Committee Updated after alignment with Fire & Safety Regulations Chapters 7.9 & 13.4 Rephrased title as “Demolition Work Safety Procedure”. Manager Engineering assigned as the Technical Approver. Added section 5.2.1 – Communication. Align section numbering and added Sections 7 & 8 as per KOC HSEMS Document Control Procedure. Technical Approver’s 2nd round review comments incorporated.

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APPENDIX -1

Checklists for Planning Demolition Operations Asset Owner Checklist Sr. No 1 2 3 4 5 6 7 8 9 10 11

Description

Yes or No

Remarks

Have all the available plans and specifications of the structure been provided to the demolition contractor? Have the relevant groups/assets controlling essential utility services been notified? Has all the environmental impacts defined? Has the extent of the demolition work been defined? Has a realistic period of time been allocated for the demolition? Have any nearby asset owners been notified and protection works agreed to? Has the extent, nature and location of hazardous materials been documented? Have all services been located? Have all underground facilities such as tanks been located? Have all chemicals, volatile fuels and gases been deactivated? Is the structure secure from fire?

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APPENDIX -2 Checklists for Planning Demolition Operations Demolition Contractor Safety Checklist Sr. No 1 2 3 4 5 6 7

8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Description

Yes or No

Remarks

Risk assessment carried out? Work plan prepared and available on site? Safety plan prepared and available on site? Evacuation plan prepared and available on site? Telephone with all emergency number displayed? First aid person and kit on site? Overhead protection, hoarding, gantries and protective structures sufficient to protect personnel and prevent unauthorized entry? Firefighting equipment available and persons trained in its use? Demolition warning signs in place? Safe access to site office clearly marked? Toilets, and amenities clean and in a safe area? Safe access to work areas clear and well lit? Competent supervision on site? Asbestos and other hazardous substances been removed? Tanks, voids and vaults located? Tanks, process plant and pipe work degassed and rendered safe? Electricity and other services not required are permanently isolated? Earth leakage to all temporary power? Shoring and underpinning where required? Floors back propped where required? Penetrations in floors covered or barricaded? Open sides of floors, roofs, stairwells, light wells and lift shafts protected? Vehicle buffers provided at debris chutes and openings? Debris dropping zone clearly signed and barricaded? Welding and cutting cylinders in cages or otherwise secured?

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26 27

28 29 30 31 32 33 34 35

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37 38 39

40

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Cutting gear with Fire extinguishers? Workers using Cutting gear are provided with Personal Protective Equipment (PPE) such as Goggles, gloves etc.? Jack hammers and compressors fitted with silencers? Compressor hose connections fitted with safety pins? Respiratory, hearing and eye protection provided? Debris cleared from floors to prevent overloading? Combustible debris not building up to become a fire hazard? Lift shafts barricaded and catch platforms where necessary? Safe work platforms provided? Hard level surface provided for elevated work platforms, free from penetrations or up stands? Scaffolds tied to structure, safe working decks guardrails, toe boards and access provided? Scaffold undamaged and free from debris? Where site adjoins public place perimeter scaffold provided and dust proofed? Earthmoving equipment and demolition machinery operated by competent persons with the appropriate certificates of competency as required? Earthmoving equipment and demolition machinery provided with overhead protection as appropriate? Earthmoving equipment and machinery used on floors certified safe by an engineer and back propped as required by engineer? Engineers report on floors to support earthmoving equipment and demolition machinery made known to the relevant persons on site? Health and Safety representatives consulted and informed of all work plans, safety plans and intended work procedures on site?

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Revision Date: September 21, 2011 Uncontrolled Copy if Printed