Dangerous Goods, Hazard Zones, Dossiers and Manifests Have you considered the risks? Laboratory Managers Conference - November 2012

Dr Paulo Da Silva www.cetec.com.au

Dangerous Goods

• Classified on the basis of immediate physical or chemical risk.

• Substances that present immediate hazard;

People.

Property.

Environment.

• The hazard:

Flammability.

Toxicity.

Chemical reactivity.

Dangerous Goods

• Victoria’s definition of Dangerous Goods (Dangerous Goods Act 1985) is the same as the Australian Code for the Transport of Dangerous Goods by Road and Rail (ADG Code).

• There are; Nine classes. Some are subdivided into divisions.

• The Act does not apply to all dangerous goods, e.g. Class 1 Explosives (Explosives Regulations 2011) Division 6.2 (infectious substances). Class 7 radioactive substances (Radiation Control Act 1990

and Radiation Control Regulation 2003).

Dangerous Goods

Responsibilities

• Manufactures, Importers and Suppliers:

Determining substances as Dangerous Goods.

Preparing and supplying MSDS.

Containing, packaging and labelling in accordance with legislation.

Filling cylinders.

Responsibilities

• Employers: Provide and maintain a safe working environment with

minimised risks to health. Provide MSDS and other safety information. Provide appropriate placarding. Undertake a risk management process for storage and handling. Maintain a register of all dangerous goods on site. Consult with employees. Provide adequate training and supervision. Provide Personal Protective Equipment (PPE). Develop emergency plans in consultation with emergency

services and adjoining workplaces. Obtain licensing if manifest quantities are held at the workplace.

Responsibilities

• Employees: Duty to take care of their own health and safety.

Engage in consultation with the employer.

Follow risk management procedures and processes.

Use Personal Protective Equipment (PPE) correctly.

Provide feedback about risk management.

Report on matters that may affect the employer’s ability to comply with legislation.

Responsibilities

• Labelling, Marking and MSDS:

All goods must be appropriately labelled detailing:

Hazards.

Instructions on safe storage.

Handling.

Use and disposal.

MSDS data must also be readily available.

Chemical Manifests

• In the event of an emergency, employers or employees must have:

Chemical register.

MSDS data.

Risk Management

• Employers and employees must develop a comprehensive risk management plan incorporating:

Induction.

Training.

Supervision.

Sources of information (e.g. MSDS data)

Disposal and Decommissioning

• Items where dangerous goods were used or stored must be ‘safe’ prior to disposal, e.g.

Plants.

Pipework.

Equipment.

Container.

• Contaminated items must be classified and disposed appropriately.

Hazard Zones - Definition

Hazardous area:

• An area in which an explosive gas atmosphere is or may be expected to be present, in quantities such as to require special precautions for the construction, installation and use of equipment.

Hazard Zones:

• Zone 0 - an area in which an explosive gas atmosphere is present continuously or for long periods or frequently.

• Zone 1 - an area in which an explosive gas atmosphere is likely to occur in normal operation occasionally.

• Zone 2 - an area in which an explosive gas atmosphere is not likely to occur in normal operation but, if it does occur, it will exist for a short period only.

Areas Where Hazard Zones Will be Present:

• All areas where flammables are used/stored. Hospital operating theatres,

Laboratories,

Storage areas,

Petrol stations, etc.

Classification of Hazardous Areas

• Sources of release: Identify the source of release. Zone 0

Open bottle, tank vent, etc. Zone 1

Determine the grade of release. Zone 2

Continuous, primary, secondary.

• Extent of the Zone: Vapour density. Height

Ventilation. And

Containment. Length

Classification of Hazardous Areas Laboratories:- Floor level to 0.3 m above floor level

(where flammable goods are used and stored) ZONE 2

Fume Cupboards:- Floor level to 0.3 m above floor level ZONE 2

Within fume cupboard (AS/NZS 2243.8 compliant) NH

Exhaust duct outlet ZONE 2

Cabinet Storage:- Inside cabinet ZONE 1

Outside cabinet (1 m up, 3 m laterally) ZONE 2

Minor Storage:- 0.3 m in all directions ZONE 2

Class 3 Store/Waste:- Entire room ZONE 2

Outside of store (3 metres laterally) ZONE 2

Mixed Class Store:- Entire room ZONE 2

Outside of store (3 metres laterally) ZONE 2

Corrosive Store:- Entire room ZONE 2/NH

Outside of store ZONE 2/NH

Solvent Decanting Area:- 1.5 m up, 3 m laterally (from decanting location) ZONE 1

1.5 m up from floor level, 8 m laterally ZONE 2

Operating Theatre:- 0.5 m laterally from operating table, 1.5 m up from floor ZONE 1

0.5 m above the ‘patient’ and anaesthetic equipment ZONE 1

Gas Store (reticulation):- Entire room ZONE 1

5 m radius (external to room) ZONE 2

Examples of Hazardous Areas

Hazardous Area Verification Dossier

• All electrical installations located in a hazardous area needs a Dossier in accordance with:

AS/NZS 2381.1:2005.

Flammable vapours.

AS/NZS 61241.1.2:2000.

Flammable dusts.

Verification Dossier – Zoning

• Review floor plans and elevations. Ascertain areas with hazard zones.

• Review chemical inventory. Determine chemicals generating hazardous atmosphere.

• Determine type of hazard zone. Zone 0, Zone 1, Zone 2, Zone 20, Zone 21, Zone 22.

• Determine extent of zoning. Vapour density. Ventilation. Containment.

• Determine minimum Equipment Group and Temperature Class of equipment falling within the Hazard Zone. Equipment Group - 1, 11A, 11B, or 11C. Temperature Class - T1, T2, T3,T4, T5 and T6.

Verification Dossier – Equipment

• Identify all equipment falling within Hazard Zone.

Equipment to be tagged.

Equipment electrical specs.

E.g. T-rating, Ex-rating, IP-rating, etc.

Certificates of conformity from suppliers.

For every Ex-rating item.

Selection criteria for Cable Glands.

Verification Dossier – Maintenance

• Sufficient records to enable equipment to be maintained. Electrical maintenance specs.

• Records to be kept; Maintenance.

Overhaul.

Repair.

• Inspection checklist. As per Australian Standards.

Laboratory Layout and Hazard Zoning

Laboratory Layout – Lock It In

• Hazardous Area Dossier:

Once defined;

No changes to laboratory layout.

No changes to processes in laboratory.

No changed to chemical usage and volumes.

No changes to equipment schedules.

No relocation of equipment.

• Otherwise;

A full reassessment needs to be conducted.

Questions • For additional information please do not

hesitate to contact Dr Paulo Da Silva at CETEC +61 2 9966 9211 Suite 1, 65 Nicholson Street, St Leonards NSW 2065 paulo.dasilva@cetec.com.au