Post on 20-Aug-2020
6398.02 Energy UK H&S Conf Leeds 22/9/16
Wayne Bagnall Ltd t 07712 767744 & www.waynebagnall.co.uk 1
Safety in Demolition 22.9.16
Wayne Bagnall MBE
MSc CMIOSH MIDE MCMI
BS 6187:2011, CDM 2015; SKTE plus
case studies on full & partial demolitions
– 1984 Director of medium sized Asbestos & Demolition company
– 1995 Authored CITB Demolition & updated Asbestos module
– 1996 Part authored BS6187: 2000 Demolition Code of Practice
– 1997 MBE awarded for “Services to the Building Industry” by HM Queen
– 1999 Set up an independent Asbestos & Demolition Consultancy
– 2000 Masters degree in Construction (H&S) Mngt, Liverpool JMU
– 2002 Authored new HSE demolition guidance
– 2004 Shell, BP, Sellafield “WAGR & Calder Hall Colling Towers” advisor
– 2005 Assisted HSE launch of The Asbestos Regs 2006
– 2006 BAE Systems asbestos & demolition UK consultant
– 2008 Supervised major rail/road bridge demolitions for Network Rail
– 2008 Appointed to Institute of Demolition Engineers National Council
– 2009 UKATA Registered Member (UK Asbestos Trainers Association)
– 2010 Contributor in the revision of BS6187 Demolition code of practice
– 2012 Appointed Demolition Consultant on one of the largest projects in the UK
– 2013 Delivering training to HSE & Estates Excellence programme
– 2014 Provided RWEN Power with demolition training
– 2015 Delivered papers to National IDE conferences in Leeds & London
– 2016 Expert witness appointments for major corporations
But, before
all that I was
part of the
‘Family
Demolition
Apprentice
Scheme’
Me during school
holidays & weekends.
Operating the KL44
Mobile Yard Crane,
scrapping 3 Dum
Barges at Liverpool
Docks
BS 6187: 2011
Code of practice for full
and partial demolition
Updated & incorporates structural
refurbishments requiring demolition; plus
many new annexes & figures
[Old Codes: BS 6187: 2000 & 1982]
Navigation
aid
All 20 clauses
BS 6187: 2011 Code of practice
for full and
partial demolition
5. Planning and managing projects (page 13.)
• Route map with table provided: – planning; knowledge, compliance, programme etc.
– risk management; risk assess, controls, demo plan
– method statements format, methods & sequence
– competencies & training
– management & planning should translate to site
• Thorough planning = safe & effective projects: – responsible clients providing adequate PCI & time
– competent contractors with good supervision & controls
• Caution note: – ensure time & follow the principles in CDM 2015
– ensure all appointments are adequately assessed for SKTE (competence) / organisational capability & capacity
6398.02 Energy UK H&S Conf Leeds 22/9/16
Wayne Bagnall Ltd t 07712 767744 & www.waynebagnall.co.uk 2
Planning Demolition
2 or more contractors¹
(Part 2)
Client (PD¹) Checks², scope & tender docs, PCI etc
(Part 3 General duties)
Commercial & Domestic Clients
(Part 2 Client duties)
Designers input & duties
¹Appoint PD & PC
[C/R / PD takes domestic duties]
Service disconnections L.A. Planning consent Section 61, Bldg Act, S80 & Environment
Agency (permits)
Managing Demolition update F10 if applic, CPP & BS6187:
2011, check all permits L.A. Bldg Act; S81, S61..
Demolition Contractor (PC)
= CPP to manage work (Part 3 & 4)
Management; leadership &
worker engagement + H&S File¹
Contractors or S/C SKTE²
Check if Notifiable?
(Part 2)
Notify details Schedule 1
F10
30 days + 20 persons or 500 person days
SKTE² appointments check organisation
capability (SSIP)
Competence has no legal definition therefore CDM 2015 replaces with SKTE²: S = Skill K = Knowledge Essentially = T = Training Competence E = Experience Org capability pre-qual assess, members of SSIP = Safety Schemes in Procurement Forum
NFDC Resurgam House Martin Wilson
Paradise Current NFDC President
Hemel Hempstead
Herts &
HP2 4TF Howard Button
Chief Executive
Tel: 01442 217144 Organisation indicator for
Fax: 01442 218268 minimum industry standards
Email: info@demolition-nfdc.com
Need advice? = Institute of Demolition Engineers
• Set up 1976 (40th year celebrations)
• Support & recognition for demolition engineers
• Improved status with seminars & papers etc
• Individual (competence) indicator
• Membership route: 01634 816255 www.ide.org.uk
– Min 5 years experience application + 2 exams in London
– 2 year portfolio followed by professional interview
– 11.08 Wayne appointed to Council & NW Co-ordinator
– 2/15 & 9/15, presentations by Wayne Bagnall
– Next Seminar is in London on 30 September 2016
Institute of Explosives Engineers
European Federation of
Explosives Engineers
Explosives Engineers (Shot-firers etc)
Explosives Engineering standards & training
Meeting in London 15/7/16 = NEW ALL Smart Cards
7. Knowledge of the site (page 29)
• Route map with 2 tables: – desk & on site studies
– responsibilities for acquiring & providing info
– condition surveys; adjoining buildings & dilapidations
– Table 5; key features & potential hazards (page 36)
– reports & dissemination of knowledge
• Useful reminder to clients of their CDM duties – Regulation 4. Pre-construction information (PCI)
– however what about poor surveys e.g. asbestos etc.?
• Caution note: contractors that ask too many questions often don’t get the job!
beware of unknown or silent areas in surveys / reports
6398.02 Energy UK H&S Conf Leeds 22/9/16
Wayne Bagnall Ltd t 07712 767744 & www.waynebagnall.co.uk 3
2 key steps to safely control & minimise
asbestos exposure risks during demolition
Operative(s)
Mesothelioma
Demolition or refurbishment
Client Refurb & Demolition
Asb Survey to HSG264
1. ensure R&D Survey is provided
2. communicated, understood & controlled
Part of PCI C/R or PC CPP + RA/MS
Client & PD (if applic) PCI
Initial inspection of the manhole
revealed brick lining only
Core revealed asbestos lining! Asbestos survey gaps on a Calciner (CaO)
Example where POOR surveys can result in
health risks & costly removal / remediation
8. Decommissioning procedures (page 38.)
• Route map with 4 sections: – management & supervision
– decommissioning activities
– mothballing
– time lag effects
• Useful for checklist identifying steps needed, but. – doesn’t explain the importance of competent advice?
– where does decommissioning end & demolition start?
• Caution note: ensure clear understanding & who is responsible for what!
all services terminations should ideally be air-gapped
Tank ID, products, clean, vent & demo; SSoW & RA/MS
HCL cleaned & vented Atmosphere? / Access permit
Solid Sulphur Tank? Rapeseed Oil Tank?
9. Identifying structural hazards (page 42.)
• Route map with 3 sections: – general
– ID of structural form & features
– Examination of structural condition
• Identifies how to avoid uncontrolled structural collapse. – good route map as prompts
– Cast columns, extremely good compressive strength
– talks about unbalanced thrusts = actions & reactions etc
• Caution notes: doesn’t cover hybrid/mixed construction!
ensure understanding of latent defects / condition!
recognise when you need competent advice!
• Route map, tables & figures in 5 sections: – defines the terminology, design and management of areas
– explains the principles as part of the safety regime
– good use of diagrams
• Exclusion zones generally comprise of 4 areas: 1. plan area also remember to designate:
2. designed drop area “safe
3. predicted debris area working
4. buffer area spaces”
• Caution notes: not prescriptive, relies heavily on experience!
doesn’t define types of barriers & when needed
plus often poor at defining safe working spaces / routes
13. Safe working spaces & exclusion zones
6398.02 Energy UK H&S Conf Leeds 22/9/16
Wayne Bagnall Ltd t 07712 767744 & www.waynebagnall.co.uk 4
Figure 12
BS 6187: 2011 Clause 13
Exclusion zone
& its 4 parts
(typical for controlled
explosives demolition)
Demolition Techniques Cl 17 - Route map
BS 6187: 2011
Fig 2; see page 2
Typical arrangement
for a specialist
demolition rig high
reach 360° excavator
See also clause 17.6
High-reach machines
Cl. 18 Material handling &
processing: 20m high roof
Edge protection & chute
Barried exclusion zone below;
but this needed to be larger
Demolition
Methods
cl19 - Route Map
Regulations Regulations Regulations
App. Code
of Practice
L153 Guidance
(no ACoP yet)
App. Code
of Practice
Health and Safety at Work Act 1974
The Construction (Design & Management)
Regulations 2015 [6/4/15 replaced CDM 2007]
Guidance Guidance
6398.02 Energy UK H&S Conf Leeds 22/9/16
Wayne Bagnall Ltd t 07712 767744 & www.waynebagnall.co.uk 5
CDM 2015 Reg 19; stability of structures
1. All practicable steps must¹ be taken to prevent danger to any person from any structure which may become unstable or is in temp state of weakness or instability does not collapse².
2. Any buttress, temporary supports or structures must¹ be designed, installed & maintained so as to withstand any foreseeable loads imposed.
3. A structure must¹ not be loaded as to render it unsafe to any person
Notes:
¹CDM has removed the word “SHALL” & substituted with “MUST”
²Excess loading or pre-weakening may result in a premature collapse
Section 78 Dangerous building notice – C/R appointed but…..
S78 Dangerous building notice; C/R caused unplanned collapse
CDM 2015 Reg 20; Demolition or dismantling
1. The demolition or dismantling of a structure, or part
of a structure, must be planned and carried out to
prevent danger or, where it is not practicable to
prevent it, to reduce the danger to ALARP¹
2. The arrangements for carrying out such demolition
or dismantling must be recorded in writing² before
the work begins.
Notes:
¹ALARP = As low as is reasonably practicable
²Clients must ensure this is undertaken
2 x Demolition Case Studies
1. Conventional / Full Remote Demolition
1980’s Printworks, London Docks
or
2. Partial Demolition
Dismantling a post tensioned RC Quay
1. Former News International Printworks
London Docks, Wapping
6398.02 Energy UK H&S Conf Leeds 22/9/16
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Demolition in 9 phases North & South buildings are connected
but different construction types; (1 - 4) traditional steel frame
& (5 - 9) suspended steel frame ramp for loading bays Phases 1 – 4: Remote mechanical demolition
Demolition Case Studies
1. Conventional / Full Remote Demolition
1980’s Printworks, London Docks
or
2. Partial Demolition / dismantling
1960’s post tensioned RC Quay
2. 1960: Original 3 Piles, 4 Primary Beams, Canoes & Deck
2. 1960’s Post tensioned concrete Quay Demolitions
Dismantling & replacing a 30m x 304m quay 2. Exposed post tensioned RC primary beams