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Management of contractors: short duration & fragile roof work

Management of contractors: short duration & fragile roof work. Liz Standen HM Inspector of Health and Safety. KEY ELEMENTS OF MANAGEMENT SYSTEM. Outline of WAH Regulations. Requirements for:- Organisation, planning & supervision (Reg 4) Competence (Reg 5) Avoidance of risk from WAH (Reg 6)

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Management of contractors: short duration & fragile roof work

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  1. Management of contractors: short duration & fragile roof work Liz Standen HM Inspector of Health and Safety

  2. KEY ELEMENTS OF MANAGEMENT SYSTEM

  3. Outline of WAH Regulations • Requirements for:- • Organisation, planning & supervision (Reg 4) • Competence (Reg 5) • Avoidance of risk from WAH (Reg 6) • Selection and use of work equipment for WAH (Reg 7) • Requirements for work equipment (Reg 8) • Risk assessment approach

  4. Selection of equipment – regulation 7 • Choice of work equipment must take account of: • Working conditions and the risks to persons safety • Access and egress and the distance to be negotiated • Distance and consequences of a fall • Duration and frequency of use • Ease of rescue/evacuation • Risk of use, installation and removal of equipment

  5. Safe means of access onto roof • Existing means, internal/external staircase or ladder and roof access hatches • General access scaffolds • Stair towers • Fixed or mobile scaffold towers • Mobile access equipment • Ladders

  6. Preventing falls

  7. Verge edge protection

  8. Fall mitigation

  9. Short duration work • Tasks measured in minutes rather than hours • Includes inspection, replacing a few tiles, adjusting TV aerial • May not be RP to install edge protection or independent scaffold • Precautions depend on overall assessment of risk

  10. Minimum requirements for short duration work on roofs • Safe means of access to roof level (secured ladder to eaves as a minimum) • Safe means of working on the roof e.g.: • On a sloping roof a properly constructed and supported roof ladder • On a flat roof a fall restraint harness secured to suitable anchor points • Fall arrest as last resort – importance of rescue plan • MEWPS – particularly appropriate for short-duration minor work

  11. Demarcation of access routes and work areas • For short-duration limited work on sections of flat roof where edge protection not reasonably practicable • Simple form of continuous physical barrier which identifies work area and access routes – “safe area” • Barrier must be at least 2 m from edge of roof, leading edges and fragile materials • No unprotected holes, breaks or fragile materials within “safe are” unless suitably protected • Barriers should be durable and immediately obvious to all –bunting, tape, markings at foot level not acceptable • Use of demarcation barrier requires high level of supervision and discipline

  12. The things we see when out and about!

  13. Falls through fragile roofs account for 22% of all fatal falls An average of 7 deaths a year Not just construction – maintenance repair and cleaning Single layer roof lights Non-reinforced fibre cement sheets Corroded metal sheets Glass (including wired glass) Rotted chipboard Fragile roofs

  14. Fragile roofs • Roof materials and fixings will degrade overtime (erosion, weather damage, UV, etc) and result in fragility • All roofs should be treated as fragile until a competent person has confirmed they are not

  15. Fragile roof hierarchy • Work from underneath using a suitable work platform • Work from a MEWP basket • Perimeter edge protection and staging/crawling boards which spread load across roof (should span at least two purlins) • Staging should be fitted with guardrails otherwise fall mitigation required (crash-decks, birdcage, nets, soft landing systems, fall arrest)

  16. Work from below

  17. Fragile roof protection

  18. Fragile roof protection

  19. Fragile roof protection

  20. Fragile roof case studies

  21. Key elements of successful contractor management • Procurement • Competence & leadership • Planning & selection of equipment • Good communication • Strong supervision • Workforce buy-in • Behavioural culture

  22. Tips for managing contractors • Use PAS91 for procurement competence • Get early input from competent CDMC & designer • Clear job spec with benchmarks & penalties for non-conformance • Check supervisory competence • Mechanism for RA review for job revisions • Monitor actual site performance • Clear communication, roles & responsibilities • End of project review with contractor’s director

  23. References • PAS 91: http://www.bis.gov.uk/assets/biscore/business-sectors/docs/b/bsi-specification-pas91-construction-procurement.pdf • Managing Health & Safety in Construction: http://www.hse.gov.uk/pubns/books/l144.htm • INDG368 http://www.hse.gov.uk/pubns/indg368.pdf

  24. More references • http://www.cpa.uk.net/p/MEWPS-and-Overhead-Crushing/ • http://www.hse.gov.uk/construction/lwit/index.htm • http://www.ipaf.org/en/publications/technical-guidance-notes/ • http://www.roofworkadvice.info/ • http://www.management-standards.org/standards/full-list-2008-national-occupational-standards • http://www.hse.gov.uk/pubns/subscribe.htm

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