Stuart Lloyd, Zurich Risk Engineering, UK - Welcome

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Future Hazard Analysis in EN 12845
‘Occupancy and Storage Classification’
Stuart Lloyd
Principal Fire Protection Engineer
Zurich Risk Engineering UK
Agenda
 EN 12845 status
 The past & current hazard analysis
 Moving forward
– Non Storage
– Storage
– Special Hazards
2
Status
 Current EN 12845 issued in 2009
– EN 12845:2004 +A2
– included amendments A1 and A2
 Next EN 12845 to be published end 2014
– EN 12845 Revision 1 (EN 12845:2014)
 Future EN 12845
– EN 12845 Revision 2
– In development
– focus of this presentation
3
Occupancy Classification
Taken from BS 5306 part 2 1990 (UK)
TYPE OF OCCUPANCY
Non industrial where the
amount and combustibility
of the contents is low
For example,
some areas of:
Hospitals
Hotels
Libraries
Museums
Nursing homes
Office buildings
Prisons
Schools,
Colleges, etc
Processing and handling
mainly ordinary combustible
materials unlikely to
develop intensely burning
fires in the initial stages
Attics
basements
boiler rooms
kitchens
laundries
storage spaces
workrooms
Classification – Light Hazard
January 2008
Commercial and industrial
Goods storage - with abnormal
fire loads likely to produce
exceptionally intense fires
with a high rate of heat
release
Process hazards - extra
hazardous, likely to
develop rapidly and
intensely burning fires
Category of goods
type and height of storage
Classification Ordinary Hazard
Group I,II,III
or IIIS (see table 3)
Classification Ordinary Hazard
Group III
Classification High Hazard
high piled
storage
Storage methods
S1 to S8
Type S9 or
S10 potable
spirit stores
Classification High Hazard
process hazard
4
Occupancy Classification (EN & CEA)
Developed from text in standards (not illustrated)
TYPE OF OCCUPANCY
Commercial and industrial
Non industrial (where the
amount and combustibility
of the contents is low)
For example,
some areas of:
Hospitals
Hotels
Libraries
Museums
Nursing homes
Prisons
etc
Attics
basements
boiler rooms
kitchens
laundries
storage spaces*
workrooms
Processing and handling
mainly ordinary combustible
materials unlikely to
develop intensely burning
fires in the initial stages
Goods storage - with abnormal
fire loads likely to produce
exceptionally intense fires
with a high rate of heat
release
Process hazards - extra
hazardous, likely to
develop rapidly and
intensely burning fires
Category of goods
type and height of storage
Classification Ordinary Hazard
Group I,II,III,IV
Classification Ordinary Hazard
Group III, IV
Classification – Light Hazard
Classification High Hazard
high piled
storage
Classification High Hazard
process hazard
HHP 1,2,3,4
Storage methods
ST1 to ST6
*Storage may be High Hazard due to storage height/block size
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EN 12845 Revision 2 Simplification of Hazard Classes
 Current (10 options)
–
–
–
–
Light Hazard (LH)
Ordinary Hazard (OH 1,2,3,4)
High Hazard Process (HHP 1,2,3,4)
High Hazard Storage
 Future (5 options)
–
–
–
–
–
Fire Hazard 1
Fire Hazard 2
Fire Hazard 3
Fire Hazard 4
High Hazard Storage
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Future Density/Area for each FH
Fire Hazard
Old designation Density mm/min Area wet m² Area dry m²
FH1
LH/OH1
5
72
90
FH2
OH2/OH3
5
216
270
FH3
OH4/HHP1
7,5
260
325
FH4
HHP2/HHP3
12,5
260
325
 The most widely used density/areas have been adopted going forward
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Non Storage Occupancies
Figure 2.3 Fire Hazards “Non-Storage” overview:
Fire Hazard
FH1
Classification of fire
hazard based on
typical occupancies
Fire Hazard
FH2
Fire Hazard
FH1
NONMANUFACTURING
OCCUPANCIES
Fire Hazard
FH2
NON-STORAGE
OCCUPANCIES
Fire Hazard
FH3
MANUFACTURING
OCCUPANCIES
Classification of
fire hazard based
on specified
occupancies
Fire Hazard
FH4
The Non-Storage Occupancies have two sub-categories: a. Non-Manufacturing and b. Manufacturing
Occupancies.
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Clearer Guidance
Non-manufacturing example
Educational Facilities Universities
Schools
Colleges
Nurseries
Prisons
Gymnasiums
Construction made of concrete or
steel, low combustible load, no
carpets.
Construction other than concrete or
steel, combustible load larger than
defined as FH1, Typical technical
rooms with hydraulic units less than
100 L, laundries with less than
hydraulic units of 100 L
FH1
Storage Rooms.
HHS
FH2
 Some aspects based on construction
 All aspects based on risk evaluation
 Tables identify ‘typical risks’ associated with premise type
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Clearer Guidance
Manufacturing example
Manufacturing occupancies and their associated Fire Hazard Class continued.
Occupancy
Description
Mechanical Engineering -Sheet metal product factories
-Metal working
Or Assembling Plant
-Electric and Electronics
equipment factories
- White Appliances factories
- Circuit board manufacturing
- Car workshops
- Fire-lighter manufacture
Special Consideration
Fire Hazard
 Water-based emulsion for grinding, drilling,
cutting, stamping processes
FH2
 injection molding (plastics) for PP/PE/PS or
similar plastics
 Use of plastic logistic aids (baskets, trays,
boxes, pallet, etc..)
 Soldering process
 Paint application shops with water-based
paint
 Electrostatic paint application
 Process where combustible liquids or
cutting oils are used
FH3
 Printing works (metal foil)
 Paint application shops with solvent
 Plating processes
 Processes involving corrosive materials
requiring plastic piping
 Processes using flammable liquids.
 Fire-lighter filling process.
FH4
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Storage Classification
Figure 2.2 Fire Hazards “Storage” overview:
High
Hazard
Storage
HHS1
High
Hazard
Storage
HHS2
STORAGE
OCCUPANCIES
Commoditiy
and Fire
Hazard
Classification
Process?
High
Hazard
Storage
HHS3
Determination
of Storage
Configuration?
High
Hazard
Storage
HHS4
High
Hazard
Storage
HHS5
 Categories will be called HHS
 Will include 5 Categories
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Storage – Categories of Goods
 Category I and II
– will remain unchanged and be called HHS 1 and HHS 2
 Category III and IV are being evaluated
– will be split into three groups HHS 3, HHS 4 and HHS 5
–
–
–
–
HHS 3 - Cartoned Unexpanded Plastics (laptop in box)
HHS 4 – Uncartoned Unexpanded Plastics (garden chair)
HHS 4 – Cartoned Expanded Plastics (pillows in box)
HHS 5 – Uncartoned Expanded Plastics (sheets of polystyrene)
 You should think of HHS 4 as Category 3.5
 New designations will accommodate protection by proven protection
schemes such as CMSA from USA
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Special Hazards
Figure 2.1 – Special Hazards Overview:
Special Hazards associated to special
construction properties
Special Hazards associated to special
production processes
SPECIAL HAZARDS
Special Hazards associated to special
storage commodities
Special Hazards associated to special
storage configuration
 Intended to include specific design solutions
–
–
–
–
Tyre storage
Aerosols
Hanging garments
Etc….
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Future Flow Chart
Flow chart 2.1 Basic Evaluation Process:
Table 3.1 List of Special Hazards associated with building or
construction issues.
Table 3.2 List of Special Hazard associated with special production
processes.
FIRE HAZARDS
CLASSIFICATION –
Basic Evaluation
Special Hazard
Is this a
Special Hazard
Occupancy
YES
Evaluation
Process of
Special
Hazard _
LOOK UP
Table 3.1to
3.4
Table 3.3List of Special Hazard associated to special storage
commodities.
Table 3.4 List of Special Hazard associated to special storage configuration.
YES
Special Hazard w
Construction and/or Production
Special Storage Hazard/Special Storage Commodity?
No
Is this a storage
occupancy?
High
Hazard
Storage
HHS1
YES
STORAGE
OCCUPANCIES
High
Hazard
Storage
HHS2
Flow Chart
4.2.1.1 Fire
Hazard
Classification
Process for
Storage
Commodities
High
Hazard
Storage
HHS3
YES
Table 5.1: nonmanufacturing
occupancies and
their associated
Fire Hazard Class.
Storage
Configuration?
LOOK UP
Section 4.3
High
Hazard
Storage
HHS4
NO
NON- STORAGE
OCCUPANCIES
Check for Special Storage Configuration?
Fire Hazard
FH1
High
Hazard
Storage
HHS5
Is this a nonmanufacturing
occupancy?
NO
Table 5.2:
manufacturing
occupancies and
their associated
Fire Hazard Class.
Fire Hazard
FH2
Sprinkler Design to adequatly
protect associated fire hazards
Fire Hazard
FH3
Fire Hazard
FH4
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Thank You,
Any Questions?
15

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