Control Banding and the International Chemical Control Kit

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Control Banding and the International Chemical
Control Kit

• Pavan Baichoo
• Programme on safety and health at work and the
  environment
• (SafeWork)

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Presentation structure

• What is Control Banding
• The International Chemical Control Kit
• GHS and Control Banding

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Control banding addresses a problem

• Many chemical hazards in the workplace
• Employers need guidance on how to protect workers
• OELs established for relatively few chemicals
• Availability of technical expertise and
  monitoring equipment may be limited

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Control banding takes a pragmatic approach

• Occupational risk assessment and risk management
  instrument
• Developed by occupational hygienists and
  toxicologists
• Uses readily available information about
  chemicals and the workplace, to rank hazard and
  assess risk
• Can be used without on-site technical experts and
  expensive exposure measurements
• Suitable for small and medium sized enterprises
  (SMEs)

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Control banding has 3 elements

• Hazard
• Risk of exposure
• Control measures
• Called control banding because these are grouped
  into bands

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Hazard risk uses available information

• To categorise hazard use existing hazard
  assessment e.g. EU Risk (R) phrases, GHS
  classification
• Risk based on
• Amount of chemical used
• Likelihood that will become airborne
• Volatility (liquids) or likelihood of dust
  generation (solids)

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Limited number of control measures

• Employ good industrial hygiene practice
• Engineering control e.g. local exhaust
  ventilation
• Enclose the process
• Seek the advice of a specialist

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International Chemical Control Toolkit

• Scheme for Workplace Chemicals Control Kit
  designed for SMEs in developing countries
• Work undertaken by experts from ILO, IOHA, USA,
  South Africa, HSE
• Provides simple means for applying the hazard and
  risk information to identify the control measure
• Generic risk assessment based on GHS and task
  guidance sheets
• Aim is to provide simple and practical means to
  prevent/reduce risks of chemicals

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Scope

• Many substances used at work contain chemicals
• Guidance should be provided to ensure safe
  handling
• Does not cover process generated dusts and fumes
• Based on the HSEs COSHH Essentials kit

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Toolkit operation

• Five stages
• Hazard classification
• Scale of use
• Ability to become airborne
• Finding the control approach
• Finding the task-specific control guidance
  sheet(s)

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Hazard classification

• Determination of hazards presented by the
  chemicals (based on R phrases or GHS)
• 6 hazard groups (A-E inhalation, S contact)
• Simple 3-step reference table allows hazard group
  to be assigned to the chemical
• Hazard groups determined for common solvents
• Set of guidance sheets for pesticides

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Scale of use

• Determines how much is used/handled

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Ability to become airborne

• Physical form of chemical affects how likely it
  is to get into the air
• Solids
• Low pellets
• Medium crystalline solid
• High powder
• Liquids
• Low BP gt 150C
• Medium BP 50 150
• High BP lt 50
• Process temperature

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Selection of control approach

• Stages 1-3 enable the choice of control approach
  to be made using table
• 4 control approaches possible general
  ventilation, engineering controls, containment
  and Special
• Table overleaf allows for easy identification

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Control approach selection
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Find the task-specific guidance sheet(s)

• General guidance sheet for each approach
• Development of a range of simple and practice
  task specific control guidance sheets is planned

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Find the task-specific guidance sheet(s)
Task description Task control sheet
Control approach 1 Control approach 1
General principles 100
Sack, bottle drum storage 101
Bulk storage 102
Removing waste from air cleaning unit 103
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Special cases

• Special guidance sheets for chemicals that are
  skin or respiratory hazards
• Special guidance sheets for pesticides

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Thank You

• Further information
• SafeWork
• International Labour Office
• 4 rte. des Morillons, CH-1211 Geneva 22
• Email safework_at_ilo.org
• Web www.ilo.org/safework