Hygienic Building Design

Содержание

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CO-ENG/Proj Presentation Index 2. Design and concept of buildings 3. Boundary

CO-ENG/Proj

Presentation Index

2. Design and concept of buildings

3. Boundary fences and walls

4.

Building structure

5. Visitors gallery

6. Loading and unloading docks

7. Milk reception areas

8. Walls external and internal

9. Roofs

1. Introduction

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The Nestlé Sustainable Building Model Key Principles: Safety Strategy Building design

The Nestlé Sustainable Building Model

Key Principles:
Safety
Strategy
Building design
Building technology
Materials
Building cost
Image

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CO-ENG/Proj Presentation Index 2. Design and concept of buildings 3. Boundary

CO-ENG/Proj

Presentation Index

2. Design and concept of buildings

3. Boundary fences and walls

4.

Building structure

5. Visitors gallery

6. Loading and unloading docks

7. Milk reception areas

8. Walls external and internal

9. Roofs

1. Introduction

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Design and concept of buildings The objective of the design and

Design and concept of buildings

The objective of the design and concept

phase of any food factory project is to:
establish the minimum criteria necessary to protect Nestlé products from contamination
keep the plan practical and functional
ensure local requirements are considered

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Building types are clearly related to their functions (eg.): Process Stores

Building types are clearly related to their functions (eg.):
Process
Stores and warehouses


Laboratories
Canteens etc.

Building types:

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Hygiene consideration: construction climatic conditions soil conditions seismic tendencies architecture maintenance

Hygiene consideration: construction
climatic conditions
soil conditions
seismic tendencies
architecture
maintenance and cleaning
local problems
local

construction practices and available material
construction time
costs

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Hygiene consideration: processes to be housed building codes general safety of

Hygiene consideration:
processes to be housed
building codes
general safety of personnel
wall

and floor joints

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Hygiene consideration Building materials role: products, processes and required levels of

Hygiene consideration

Building materials role:
products, processes and required levels of hygiene
cleaning procedures


durability/maintenance of barriers
ease of maintenance
pest prevention.

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Hygiene consideration example: Climatic conditions CO-ENG/Proj

Hygiene consideration example:

Climatic conditions

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Hygiene consideration: Wall and floor joints CO-ENG/Proj Refer to: GI 206.3 - Guideline for Floor Finishes

Hygiene consideration:

Wall and floor joints

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Refer to:
GI 206.3 - Guideline for Floor

Finishes
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The main recommendation The main recommendation is to keep the building

The main recommendation

The main recommendation is to keep the building simple.
Points

of attention:
cross contamination
self-draining ledges
no bird nests outside of building
rounded corners
hollow bodies
opening to the exterior
safety exits
expansion joints

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Keep the building simple all ledges must be self-draining. external ledges must not allow nesting. CO-ENG/Proj

Keep the building simple

all ledges must be self-draining.
external ledges must

not allow nesting.

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CO-ENG/Proj Presentation Index 2. Design and concept of buildings 3. Boundary

CO-ENG/Proj

Presentation Index

2. Design and concept of buildings

3. Boundary fences and walls

4.

Building structure

5. Visitors gallery

6. Loading and unloading docks

7. Milk reception areas

8. Walls external and internal

9. Roofs

1. Introduction

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Boundary fences and walls Main purpose is to be the first

Boundary fences and walls

Main purpose is to be the first barrier

to protect from:
Carriers of contaminants
Unauthorized personnel entry

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Boundary fences and walls types fine mesh ( solid wall -

Boundary fences and walls types

fine mesh (<5cm x 5cm) fence

solid wall

- concrete block or brick

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combination of the two - mesh on the top of a brick wall

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CO-ENG/Proj Presentation Index 2. Design and concept of buildings 3. Boundary

CO-ENG/Proj

Presentation Index

2. Design and concept of buildings

3. Boundary fences and walls

4.

Building structure

5. Visitors gallery

6. Loading and unloading docks

7. Milk reception areas

8. Walls external and internal

9. Roofs

1. Introduction

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Building structure The structure, which is the load-bearing part of the

Building structure

The structure, which is the load-bearing part of the building,

includes:
foundations
columns
walls
floors
slabs and beams
roofs.

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Basic types There are two basic types of building elements: vertical

Basic types

There are two basic types of building elements:
vertical bearing elements
horizontal

bearing elements
These elements can be made of:
concrete
steel
mixed structure of reinforced concrete/steel.

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Vertical elements hygiene considerations Columns and masonry walls should be: of

Vertical elements hygiene considerations

Columns and masonry walls should be:
of steel

or reinforced concrete
in sufficient numbers
flush with the interior side of adjacent walls
not of open steel structures with H or I type profiles
connected to masonry walls
easy to clean

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Vertical elements hygiene considerations CO-ENG/Proj

Vertical elements hygiene considerations

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Horizontal elements hygiene considerations Floor slabs - ground floor - suspended

Horizontal elements hygiene considerations

Floor slabs - ground floor - suspended and

made of re-enforced concrete: Critical points to be noted:
joint cracks
hygienic voids
expansion joints
expansion joints
metallic joints

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Horizontal elements hygiene considerations CO-ENG/Proj

Horizontal elements hygiene considerations

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Recommendations Some important points of consideration: Avoid open steel structure in

Recommendations
Some important points of consideration:
Avoid open steel structure in high

hygiene zones
Easiness of cleaning
Barrier against contaminants
Surface finishes are critical
Corrosion
Expansion joints

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CO-ENG/Proj Recommendations on building structure

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Recommendations on building structure

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CO-ENG/Proj Presentation Index 2. Design and concept of buildings 3. Boundary

CO-ENG/Proj

Presentation Index

2. Design and concept of buildings

3. Boundary fences and walls

4.

Building structure

5. Visitors gallery

6. Loading and unloading docks

7. Milk reception areas

8. Walls external and internal

9. Roofs

1. Introduction

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Visitors gallery A visitors gallery is designed to: observe the operations

Visitors gallery
A visitors gallery is designed to:
observe the operations
special clothing avoidance
protect

hygienic quality of products
ensure the safety of visitors

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Basic types of visitors gallery CO-ENG/Proj

Basic types of visitors gallery

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Visitors gallery hygiene considerations Visitors gallery must: permit observation provide a

Visitors gallery hygiene considerations

Visitors gallery must:
permit observation
provide a barrier
Important

hygienic features:
observation windows of plastic or safety glass
no passage over exposed lines
access to gallery only from low hygiene areas
if possible - a passage-way gallery outside the main process area wall.

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CO-ENG/Proj Presentation Index 2. Design and concept of buildings 3. Boundary

CO-ENG/Proj

Presentation Index

2. Design and concept of buildings

3. Boundary fences and walls

4.

Building structure

5. Visitors gallery

6. Loading and unloading docks

7. Milk reception areas

8. Walls external and internal

9. Roofs

1. Introduction

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Loading and unloading docks Loading and unloading docks are points where:

Loading and unloading docks

Loading and unloading docks are points where:
lorries (trucks)


containers
trains (rail cars)
other transports
either - off-load:  
raw materials (solid or liquid)
packaging
other incoming goods for the factory
or load products for distribution

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Hygiene considerations all types Loading/Unloading must not affect the hygienic quality on product CO-ENG/Proj

Hygiene considerations all types

Loading/Unloading must not affect the hygienic quality on

product

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Hygiene considerations road transport CO-ENG/Proj

Hygiene considerations road transport

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Hygiene considerations road transport CO-ENG/Proj

Hygiene considerations road transport

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Hygiene considerations trains/rail cars CO-ENG/Proj

Hygiene considerations trains/rail cars

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Loading and unloading docks Points of consideration: Types of products handled

Loading and unloading docks
Points of consideration:
Types of products handled
Protect product

and prevent pest entry
Rapid closing door
Lighting and cleaning
Contaminated raw materials

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CO-ENG/Proj Presentation Index 2. Design and concept of buildings 3. Boundary

CO-ENG/Proj

Presentation Index

2. Design and concept of buildings

3. Boundary fences and walls

4.

Building structure

5. Visitors gallery

6. Loading and unloading docks

7. Milk reception areas

8. Walls external and internal

9. Roofs

1. Introduction

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Milk reception areas are designated area in any factory processing liquid

Milk reception areas

are designated area in any factory processing liquid milk

producing:
milk powder
canned milk
ice-cream
chocolate or chocolate base
refrigerated desserts
etc.

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Milk reception areas receive either tankers or milk churns or a

Milk reception areas

receive either tankers or milk churns or a combination

of the two
either be an integral part of the factory linked to process buildings
or be separated from main factory grounds for reasons of minimising entry of contamination into the factory environment and only being connected to the latter by pipes.

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Milk reception areas CO-ENG/Proj

Milk reception areas

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Milk reception areas CO-ENG/Proj

Milk reception areas

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Milk reception areas CO-ENG/Proj

Milk reception areas

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Milk reception areas hygiene considerations CO-ENG/Proj

Milk reception areas hygiene considerations

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CO-ENG/Proj Presentation Index 2. Design and concept of buildings 3. Boundary

CO-ENG/Proj

Presentation Index

2. Design and concept of buildings

3. Boundary fences and walls

4.

Building structure

5. Visitors gallery

6. Loading and unloading docks

7. Milk reception areas

8. Walls external and internal

9. Roofs

1. Introduction

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Types of external and internal walls traditional construction pre-fabricated (sandwich) made

Types of external and internal walls

traditional construction
pre-fabricated (sandwich)
made of corrugated or

flat facing sheets
with core material (PUR, EPS insulation)
with surface finish (paint, hard PVC, epoxy).
combined structure

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Walls hygiene considerations CO-ENG/Proj

Walls hygiene considerations

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Walls hygiene considerations CO-ENG/Proj

Walls hygiene considerations

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Walls hygiene considerations CO-ENG/Proj

Walls hygiene considerations

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Walls hygiene considerations CO-ENG/Proj

Walls hygiene considerations

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Walls – typical faults CO-ENG/Proj

Walls – typical faults

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Recommendations for wall hygiene Choice between a traditional and a pre-fabricated

Recommendations for wall hygiene

Choice between a traditional and a pre-fabricated wall

depends on:
product
local possibilities
costs.
Whatever the choice there are hygienic features recommended for both traditional and pre-fabricated wall types.
Details of wall finishes can be chosen according to several details of processing:
whether the area is to be dry or wet cleaned
whether the area is high/medium/low hygiene.  

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CO-ENG/Proj Recommendations for wall hygiene

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Recommendations for wall hygiene

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Recommendations for wall hygiene CO-ENG/Proj

Recommendations for wall hygiene

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Preventative measures for wall hygiene CO-ENG/Proj

Preventative measures for wall hygiene

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CO-ENG/Proj Presentation Index 2. Design and concept of buildings 3. Boundary

CO-ENG/Proj

Presentation Index

2. Design and concept of buildings

3. Boundary fences and walls

4.

Building structure

5. Visitors gallery

6. Loading and unloading docks

7. Milk reception areas

8. Walls external and internal

9. Roofs

1. Introduction

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Roof types Two basic types of roof structures: Pitched Flat CO-ENG/Proj

Roof types

Two basic types of roof structures:
Pitched Flat

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Roofs Best hygienic roofing material: PVC or flexible polyester. Easy to

Roofs

Best hygienic roofing material:
PVC or flexible polyester.
Easy to clean
Does

not collect dirt
Does not allow build-up of organic deposits

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Roofs hygiene considerations Important hygiene aspects for roofs: barrier against infiltrations

Roofs hygiene considerations

Important hygiene aspects for roofs:
barrier against infiltrations
ease

of drainage
good construction and protection at expansion joints or building connections - to prevent infiltrations.

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CO-ENG/Proj Roofs hygiene considerations

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Roofs hygiene considerations

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CO-ENG/Proj Roofs hygiene considerations

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Roofs hygiene considerations

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Roofs hygiene considerations CO-ENG/Proj

Roofs hygiene considerations

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Good construction and protection at expansion joints or building connections -

Good construction and protection at expansion joints or building connections -

to prevent infiltrations.
Note: Joint must be covered at roof level.

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Roofs hygiene considerations

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CO-ENG/Proj Roofs hygiene considerations

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Roofs hygiene considerations

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CO-ENG/Proj Roofs hygiene considerations

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Roofs hygiene considerations

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Particular attention must also be paid to condensation created by vents.

Particular attention must also be paid to condensation created by vents.

Water and product residues at such points can attack roof covering. Regular cleaning helps.

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Roofs hygiene considerations

Maintenance of roof covering is essential to ensure it remains waterproof.

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CO-ENG/Proj Roofs hygiene considerations

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Roofs hygiene considerations

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Recommendations The roof is a critical part of the building and

Recommendations

The roof is a critical part of the building and as

it collects debris and contamination from various sources, it should:
be waterproof
be self-draining
not provide harborage for pests
be easily cleanable
be accessible for maintenance - without risk for interior
high/medium hygiene areas

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Roof key points Water leakage Regular inspection and maintenance CO-ENG/Proj

Roof key points

Water leakage
Regular inspection and maintenance

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