COMPENDIUM OF TYPICAL HAZARDS ASSOCIATED WITH CLADDING WORKS AND THEIR CONTROL MEASURES IN THE CONSTRUCTION INDUSTRY CLADDING WORKS

Transcription

1 COMPENDIUM OF TYPICAL HAZARDS ASSOCIATED WITH CLADDING WORKS AND THEIR CONTROL MEASURES IN THE CONSTRUCTION INDUSTRY CLADDING WORKS No. Hazards Possible Control Measures Useful Links/Tips 1. Measurement 1.1 Fall from height when using scaffolds and gondolas Construct proper barricades and edge protection Conduct regular inspection and maintenance on scaffolds and gondolas Provide and use adequate and appropriate access Provide, maintain and use safety harness, hard hats and safety shoes See Appendix Figure Struck by falling objects (debris) Check and close gaps at toe-boards and decking Practice good housekeeping techniques Conduct regular site inspection 2. Delivery of product to site

2 2.1 Dropping of load due to improper unloading method Employ qualified lifting crew for lorry crane unloading 2.2 Failure of lorry crane due to outriggers not being fully extended or improper sitting 2.3 Dropping of load due to improper lifting gear 2.4 Failure of lorry crane due to overloading 2.5 Crushing and collapse of materials or platform, due to improper stacking of materials Get lifting supervisor to coordinate the lifting activities Switch to proper lifting gear Get lifting supervisor to coordinate the lifting activities Employ qualified lifting crew for lorry crane unloading Follow and use the specified safe work load Use a proper design Develop in-house guidelines on material handling (e.g. not more than a specified number of layers) Enforce strict supervision Use a leveled ground for stacking Cordon off the area of stacking 3. Transport materials to actual location 3.1 Material dropping from height during lifting process 3.2 Communication breakdown between rigger and signalman Implement lifting Permit-To-Work Secure material properly and tightly to lifting device Check that no one stands below the lifting area Check if communication sets are in good condition before use

3 3.3 Failure of material hoist due to overloading 3.4 Overturning of crane due to uneven ground Use standardised language Comply with material hoist safe working load Conduct regular inspection and proper maintenance of material hoist Do not overload crane beyond its safe working load at its specified radius and boom length Park the crane on level and firm ground with its outriggers fully extended and resting on steel plates See Appendix Figure 2 4. Distribute materials to respective areas 4.1 Cut by sharp edges Cover sharp edges with protective materials 4.2 Back injuries due to lifting heavy objects Inspect on correct usage of PPE Provide, maintain and use appropriate gloves Provide and use mechanical devices Conduct training on proper manual handling techniques 4.3 Struck by falling of materials due to their placement near the edge of building Enforce in-house rules and regulations Implement safe work procedures Demarcate safe storage areas for cladding during installation Provide, maintain and use hard hats 5. Fixing by installer

4 5.1 Falling from height during handling, due to improper installation method 5.2 Falling from height due to not using proper PPE or not using appropriate fall protection Follow method statement for cladding work Construct barricades or other appropriate safeguards Construct appropriate safeguards Implement Permit-To-Work for working at height See Appendix Figure Failure of lifting machine Conduct regular maintenance on hoisting equipment or lifting gear Conduct inspection as a preventive maintenance program 5.4 Hand injury from usage of hand tools 5.5 Electrical hazards from electrical drills and other equipment or improper electrical connection Conduct inspection and proper maintenance of hand tools Conduct training on usage of hand tools Comply with CP88 Part 1 See Appendix Figure 4 Refer to Circular on Socket Outlet Assembly 1 Refer to Circular on Electrical Safety Collapse of scaffold due to removal of scaffold braces and tie-backs for stone cladding installation 5.7 Fall or other injury due to removal of scaffold cross bracing or other illegal modification of scaffold components (e.g. cross-bracing and toe-board) Coordinate between various trade and scaffold contractors to suit nature of work Conduct regular inspection to check and replace braces and ties Coordinate between various trade and scaffold contractor to suit nature of work Conduct regular inspection to check and replace braces and ties

5 6. Use of Gondola 6.1 Mechanical failure Conduct regular inspection 6.2 Swinging and hitting against objects due to heavy wind 6.3 Fall from height due to improper use of fall arrestor Implement preventive maintenance program Ensure erection by Approved Scaffold Contractor Do not load gondola beyond its safe working load as specified by authorised examiner Place restrainer or tag lines on gondola Avoid working during strong wind conditions Conduct training on use of fall arrestor Conduct regular inspection Enforce on only trained workers can use the gondola Provide, maintain and use safety harness See Appendix Figure 5 7. Use of toxic materials during touch-up and rectification 7.1 Inhalation and contact with solvents, epoxy paints, etc. Review and communicate material safety data sheet to all persons Provide and use appropriate PPE (Respirators and gloves) Practise good personal hygiene 8. Patch-up

6 8.1 Falling from height of inexperienced workers Provide training for workers Provide, maintain and use safety harness Conduct training on the usage of safety harness 1 This document can be retrieved from under Managing Workplace Hazards Guidelines Factsheets and Circulars Safety 2 This document can be retrieved from under Managing Workplace Hazards Guidelines Factsheets and Circulars Safety

7 Appendix Figure 1: Proper and adequate access Figure 2: Fully extended outrigger Return to Section 1.1 Figure 3: Permit-to-work Return to Section 3.4 Figure 4: Inspection tag Return to Section 5.2 Return to Section 5.3

8 Figure 5: Safety harness Return to Section 6.3 *Contents of this resource are originated from the Risk Assessment workshops organised by the Singapore Contractors Association Limited with the support of the Occupational Safety and Health Division of the Ministry of Manpower. This material is not intended to be an exhaustive list of hazards and control measures for the above-mentioned activities. Companies are to conduct risk assessment on the work activities specific to their workplaces by identifying the hazards, evaluating the risk and determining suitable control measures where appropriate. References should be made to the relevant regulations and code of practices when in doubt.