Hong Kong Housing Authority g g g y Site Safety Seminar for Works

Hong Kong Housing Authorityg g g y

Site Safety Seminar for Works ContractsSite Safety Seminar for Works Contracts and Property Services Contracts

Safe Operation of Mobile Cranep

Speaker : C Y YeungSpeaker : C Y Yeung15 December 2011

Safe Operation of Mobile CraneSafe Operation of Mobile CraneI dI dIndexIndex

Failure Modes- Management System Pressures

- Social Pressures- Social Pressures

- Unsafe Conditions

Unsafe Acts- Unsafe Acts

- Personal Factors

C fli ti M ti ti- Conflicting Motivation

- Task Beyond Mental Capacity

Safe Operation of Mobile CraneSafe Operation of Mobile CraneIndexIndex

PracticesPractices

- Environment - Checking Lifting Gears

- Lifting Training

- Workshop for Lifting

- Supervision

- Position of Mobile Crane

- Plant Checking

- Thoroughly Examine & Test by RPE

- Foundation

- Working Permit

- Mat & Timber Blocking

Safe Operation of Mobile CraneSafe Operation of Mobile CraneF il M dF il M d

Management System PressuresFailure ModesFailure Modes

Management System Pressures• financial restriction

l k f it t• lack of commitment• lack of policyp y• lack of standards

lack of knowledge & information• lack of knowledge & information• lack of supervision


Social Pressure

Failure ModesFailure Modes

Social Pressure• group attitudes• trade customers• traditiontradition• society attitude to risk-taking

“ bl ” b h i i h k l• “acceptable” behavior in the workplace


Unsafe Conditions


Unsafe Conditions• inadequate or missing safety devices• defective parts / components• inadequate warninginadequate warning• ineffective housekeeping• adverse weather conditions• inadequate illuminationq• inadequate soil bearing capacity


Unsafe ConditionsFailure ModesFailure Modes

• equipment factors - normal wear & tearb l & t- abnormal wear & tear

- design factors• poor working practices• inadequate or careless maintenance• inadequate or careless maintenance• group norm


Unsafe Acts


Unsafe Acts• working without authority• failure to warn others of danger• leaving equipment in a dangerous conditionleaving equipment in a dangerous condition• using equipment at the wrong speed

di i f d i• disconnecting safety devices• using defective equipmentg q p• using equipment the wrong way or for wrong task


Unsafe ActsFailure ModeFailure Mode

• overloading of equipmentf il t h i t l d tl• failure to hoist load correctly

• being in an unauthorized place• unauthorized servicing & maintaining equipment

Safe Operation of Mobile CraneSafe Operation of Mobile CraneP l FP l F

Personal Factors

Personal FactorsPersonal Factors

Personal Factors• knowledge & skill deficiencies• lack of hazard awareness• lack of job knowledgej g• lack of job skill

l k f d t i t ti• lack of adequate instruction


Conflicting Motivations


Conflicting Motivations• saving time & effort• avoiding discomfort• attracting attentionattracting attention• asserting independence

i t t• expressing resentment


Task Beyond Mental CapacityFailure ModesFailure Modes

y p y• information overload

l l / d i t k• poorly plan / design task• beyond ability of individual

Safe Operation of Mobile CraneSafe Operation of Mobile CraneE iE iEnvironmentEnvironment

Safety Notice & In house Safety RulesSafety Notice & In-house Safety Rules

Appointed Competent Persons


F OffFence Off Hazardous Zone

Safety NoticeSafety Notice


Rigging Method forRigging Method for Material Hoisting

Safe Operation of Mobile CraneSafe Operation of Mobile CraneLif i T i iLif i T i iLifting TrainingLifting Training

Safety Training

Safe Operation of Mobile CraneSafe Operation of Mobile CraneW k h f Lif iW k h f Lif iWorkshop for LiftingWorkshop for Lifting

Planning

Safe Operation of Mobile CraneSafe Operation of Mobile CranePl Ch kiPl Ch kiPlant CheckingPlant Checking

Closed Circuit TelevisionClosed Circuit Television (CCTV) Camera

Reversing Video Device (RVD)

Safe Operation of Mobile CraneSafe Operation of Mobile CranePl Ch kiPl Ch ki

A ti lli i R d

Plant CheckingPlant Checking

Anti-collision Rod

Flashing Light

Safe Operation of Mobile CraneSafe Operation of Mobile CranePl Ch kiPl Ch ki

Checking Team led by Plant

Plant CheckingPlant Checking

Checking Team led by Plant Superintendent

Safe Operation of Mobile CraneSafe Operation of Mobile CraneTh hl E i d T b RPETh hl E i d T b RPEThoroughly Examine and Test by RPEThoroughly Examine and Test by RPE

Loading Test by RPE

Safe Operation of Mobile CraneSafe Operation of Mobile CraneW ki P iW ki P i

Checking & Issuing Working Permit

Working PermitWorking Permit

Checking & Issuing Working Permit

Safe Operation of Mobile CraneSafe Operation of Mobile CraneW ki P iW ki P i

Debriefing

Working PermitWorking Permit

Debriefing

Safe Operation of Mobile CraneSafe Operation of Mobile CraneM Ti b Bl kiM Ti b Bl ki

Mat or Timber Blocking at least 3

Mat or Timber BlockingMat or Timber Blocking

Mat or Timber Blocking at least 3 times larger in area than the float

Safe Operation of Mobile CraneSafe Operation of Mobile CraneM Ti b Bl kiM Ti b Bl kiMat or Timber BlockingMat or Timber Blocking

Steel Plate

Safe Operation of Mobile CraneSafe Operation of Mobile CraneCh ki Lif i GCh ki Lif i G

Checking & Inspection of Lifting Gears

Checking Lifting GearsChecking Lifting Gears

Checking & Inspection of Lifting Gears

Safe Operation of Mobile CraneSafe Operation of Mobile CraneS i iS i i

Lifting Supervisor Oversee

SupervisionSupervision

Lifting Operation on the Spot

Safe Operation of Mobile CraneSafe Operation of Mobile CraneP i i f M bil CP i i f M bil CPosition of Mobile CranePosition of Mobile Crane

CoP for Safe Use of

Reference Documents

CoP for Safe Use of Mobile Crane issued

by Labour Department

Safe Operation of Mobile CraneSafe Operation of Mobile CraneF d iF d iFoundationFoundation

Reference Documents

BS 7121-3:2000CoP for Safe Use of

Reference Documents

CoP for Safe Use of Crane Part 3 : Mobile Crane

CIRIA C703Crane Stability on Site – Introductory

Guide 2E 2003Guide 2E 2003

Safe Operation of Mobile CraneSafe Operation of Mobile Crane






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