Classification

Classification

Terminology or Abbreviation What it stands for or meaning Significance and Implication
 Cleanroom This classification shows the Class of Air Cleanliness of the Area  Many Fume cupboard instalations are located in laboratories which are also classified as Cleanrooms. However Cleanrooms have various levels of Cleanliness and also various countries have different ways of classifying Clean Rooms.
When determining :
1. Check International  Air Classes of Cleanrooms and
2. Cleanroom Levels which require special design for Fume cupboards 
 PC2 or PC3 etc  This Classification shows the Physical Containment of the Area  Reference Standard is AS/NZS 2982.1:1997 – Laboratory Design and Construction – part 1 – General Requirements
Physical Containment Levels relate to Microbiological laboratories , Animal Accommodation , Plant Houses and Insectaries and since many fume cupboards are located in in these labs , our Fume cupboard systems must comply to the requirements of the relevant PC level.
Refer PC Requirements 
Class 1 Zone 1 or Class 1 Zone 0  This Classification refers to the Hazardous Classification of the Area Fume cupboards are used in various industries which mean that the fume cupboard or the Exhaust fan could be located in various Hazardous areas. The Classification of the Area is termed by Class or Group and by Zone.
Special attention is to be given for:
Class 1 or Group 1  and
Zone 0 or Zone 1
Examples of Classification types are:
Extract from Fantech Classification of Hazardous Areas
Extract from Hazardous Area Selection 
However note that the AS/NZS 2430.3.6:2004 standard on Classification pof Hazardous Areas has a section on Fume cupboards which clearly distinguishes between a Fully compliant Fume cupboard system and a Non-Compliant System.
Extract from AS2430.3.6 
DDA Designed for Disabled Access Equipment must be suitable for use by a Disabled Person typically a wheelchair sitted User of a Fume cupboard.
AS 1428.2 applies and shows various access limitations which then imply that our equipment must satisfy these requirements.
Relevant extract from AS1428.2
Bushfire Ember Screens Requirements for Bushfire Prone Areas Mainly impacts above Roof installation
Duct may be nominated to be in Stainless Steel
2mm SS Screen at top of Discharge stack to prevent fire embers from coming into the duct system  ( in accordance with AS3959 Construction of Buildings in Bush Fire Prone Areas)
Room Pressurisation Method by which certain pressures are maintained in various rooms relative to adjacent areas . Labs may be maintained at -ve or +ve pressure depending on type of work being conducted.
This is the most common method of maintaining relative cleanliness of adjacent areas and avoiding cross contamination Pressure differential  is maintained by difference in supply air and Exhaust Air into the room.
Fume cupboard exhaust air used as part of total exhaust exhaust air from the room.
BCA or NCC “Building Code of Australia” or now called “National Construction Code” Stipulates requirements for various types of Buildings for relevant Occupancy and Use Type.
Unless there is an Approved Alternative Engineering Solution , The requirements of the BCA or NCC must be met.
Fire Compartments Refers for Fire compartments in Buildings Main Standard which applies here is AS1668.1.
Many large buildings or multiple level buildings are separated into Fire compartments for Fire safety. i.e Design measures are put in place to prevent a fire from one compartment spreading to another compartment.
Since our FC exhaust ducts pass through the building or through Risers etc, it is important to ensure that our systems meet the Fire separation requirements are well.
RI Radio Isotope If Fume cupboard is designated for low level Radio Isotope application, then AS2243.8 allows for general Purpose fume cupboards to be used with some special features as shown in AS2243.8.
It is important for us to pick this when reading the Spec as there are cost and design implications for the fume cupboard  ( lead lining etc )