BS 4434:1995
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Specification for safety and environmental aspects in the design, construction and installation of refrigerating appliances and systems
Hardcopy , PDF
15-09-2000
English
15-11-1995
Committees responsible
Foreword
Specification
Introduction
Section 1. General
1.1 Scope
1.2 References
1.3 Definitions
1.4 Refrigerant groups
1.5 Categories of occupancy
1.6 Types of cooling system
Section 2. Design and construction
2.1 Refrigerant group and cooling system
2.2 Maximum charge of refrigerant and restrictions on
use
2.3 Design pressure and allowable pressure
2.4 Pressure vessels
2.5 Heat exchangers
2.6 Piping and fittings
2.7 Protection against excess pressure
2.8 Instrumentation
Section 3. Installation
3.1 General
3.2 Machinery rooms
3.3 Safety provisions for personnel in refrigerated
spaces
3.4 Refrigerant detectors
3.5 Electrical installations
3.6 Charging and discharging refrigerant
Section 4. Testing, inspection, documentation and
marking
4.1 Testing
4.2 Inspection
4.3 Documentation
4.4 Marking
Section 5. Instruction manual or leaflet
5.1 Provision of instruction manual or leaflet
5.2 Contents of instruction manual or leaflet
Annexes
A (informative) Materials
B (informative) Pipe supports and hangers
C (informative) Relationship between allowable
pressure and other pressures
D (informative) Ventilation and refrigerant
detection in machinery rooms
E (informative) Guide to the selection of electrical
apparatus for hazardous (potentially explosive)
areas
F (informative) Guide to the operation and
maintenance of commercial and industrial
refrigerating appliances and systems in relation
to safety
Tables
1 Safety group classification of refrigerants as
determined by flammability and toxicity
2 Classification of refrigerants
3 Categories of occupancy
4 Types of cooling system
5 Selection of refrigerant group and cooling system
in relation to category of occupancy
6 Minimum system design temperatures
7 Relationship between the various pressures and
the allowable pressure (ps0
8 Values of f for different refrigerants
B.1 Recommended maximum spacing for single pipe
supports
Figures
C.1 Schematic diagram of the relationship between
allowable pressure and other pressures referred
to in this standard
E.1 Selection of electrical apparatus for hazardous
(potentially explosive) areas
List of references
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