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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 Liz Standen HM Inspector of Health and Safety
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
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
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
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
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
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
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
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
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)
Key elements of successful contractor management • Procurement • Competence & leadership • Planning & selection of equipment • Good communication • Strong supervision • Workforce buy-in • Behavioural culture
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
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
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