Already a subscriber? 
MADCAD.com Free Trial
Sign up for a 3 day free trial to explore the MADCAD.com interface, PLUS access the
2009 International Building Code to see how it all works.
If you like to setup a quick demo, let us know at support@madcad.com
or +1 800.798.9296 and we will be happy to schedule a webinar for you.
Security check
Please login to your personal account to use this feature.
Please login to your authorized staff account to use this feature.
Are you sure you want to empty the cart?
BS EN 17893:2024 Thermal road vehicles. Temperature-controlled systems using flammable refrigerants for transport of goods. Requirements and risk analysis process, 2024
- undefined
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Symbols and abbreviated terms
- 5 Risk assessment [Go to Page]
- 5.1 General [Go to Page]
- 5.1.1 General requirements
- 5.1.2 Safety principles
- 5.1.3 Safety concept
- 5.2 Characteristics of Flammable refrigerants
- 5.3 Significant hazards
- 5.4 Protection against hazards [Go to Page]
- 5.4.1 Protection against fire, flame propagation and explosion hazards
- 5.4.2 Protection against excessive internal system pressure
- 5.5 Operational mode risk assessment [Go to Page]
- 5.5.1 General
- 5.5.2 Operational modes
- 5.5.3 Evaluation of leak rate and frequencies for characterization
- 5.5.4 Control volume
- 5.5.5 Risk assessment for flammable refrigerants
- 5.6 Tolerable risk [Go to Page]
- 5.6.1 General
- 5.6.2 Risk reduction
- 5.6.3 Tolerable risk criteria
- 5.7 Auditing and effectiveness check of safety concepts
- 6 Requirements for design and construction of the TRU [Go to Page]
- 6.1 General
- 6.2 Components and piping of refrigerating systems with flammable refrigerant [Go to Page]
- 6.2.1 General
- 6.2.2 External fire relief device
- 6.3 Assembly of TRU on van, truck and trailer
- 6.4 Interior of the compartment volume [Go to Page]
- 6.4.1 General
- 6.4.2 Inside compartment heat exchanger [Go to Page]
- 6.4.2.1 General
- 6.4.2.2 Heat exchanger zoning concept
- 6.4.2.3 Indirect heat exchanger concept
- 6.4.2.4 Heat exchanger separation mechanism
- 6.4.3 Ventilation inside the compartment volume
- 6.4.4 Refrigerant detectors
- 6.4.5 Evaluation of surface temperatures
- 6.4.6 Electrical components
- 6.5 Outside electrical components (cabinet)
- 6.6 Refrigerant charge
- 6.7 Alarm system [Go to Page]
- 6.7.1 General
- 6.7.2 Alarm system power
- 6.8 Testing [Go to Page]
- 6.8.1 General
- 6.8.2 Testing of safety concept and protective devices
- 6.8.3 Testing the air tightness of the compartment volume to determine the dilution of release
- 6.8.4 Corrosion testing
- 6.8.5 Vibration type-test
- 6.8.6 Shock and impact type test
- 6.8.7 Final system test before putting into operation
- 6.9 Marking and documentation [Go to Page]
- 6.9.1 General
- 6.9.2 Marking
- 6.9.3 Manuals and documentation [Go to Page]
- 6.9.3.1 General
- 6.9.3.2 Operation and service manual
- 7 Requirements for the TRU manufacturer ensuring safe service, maintenance, repair [Go to Page]
- 7.1 General
- 7.2 Providing education and training
- 7.3 Instruction for maintenance and repair
- 7.4 Providing safety instructions
- 7.5 Providing a self-check mechanism
- 8 Safe operation at different operating sites [Go to Page]
- 8.1 General
- 8.2 Operating sites
- 8.3 Significant hazards at operating sites
- 8.4 Ventilating condition at operating sites [Go to Page]
- 8.4.1 General
- 8.4.2 Requirements for operation in open air
- 8.4.3 Requirements for operation in well-ventilated areas
- 8.4.4 Requirements for operation in non-well-ventilated areas
- 8.4.5 Operation in non-ventilated areas
- 8.5 Requirements for opening of door(s) and for loading and unloading of goods
- 8.6 Electrical installations at operating sites
- 8.7 Operator instruction for handling of alarms
- 8.8 Accidents [Go to Page]
- 8.8.1 General
- 8.8.2 Measures for accidents prevention
- 8.8.3 Measures after accidents
- 8.9 Operating instructions, manuals, guidelines at operating sites
- 9 Servicing recommendations and requirements at operating sites [Go to Page]
- 9.1 General
- 9.2 Operating sites with service activities [Go to Page]
- 9.2.1 General
- 9.2.2 General requirements
- 9.2.3 Instruction of personnel
- 9.2.4 General failure prevention
- 9.3 Assembly of TRU at the vehicle and inside the compartment volume
- 9.4 Repair and maintenance on the vehicle or the body structure
- 9.5 Repair and maintenance on the TRU including refrigerating system repair [Go to Page]
- 9.5.1 General
- 9.5.2 Instruction of personnel
- 9.5.3 Work area requirements
- 9.5.4 Inspection
- 9.5.5 System failure indication
- 9.5.6 Actions and procedure for refrigerating system repair [Go to Page]
- 9.5.6.1 General
- 9.5.6.2 Removal, evacuation of refrigerant
- 9.5.6.3 Draining the oil from a refrigerating system
- 9.5.6.4 Procedures for changing of components
- 9.5.6.5 Hot works
- 9.5.6.6 Repair of protective device(s)
- 9.5.6.7 Leak detection
- 9.5.6.8 Charging procedures
- 9.5.7 Tools and equipment
- 9.5.8 Testing after repair
- 9.5.9 Failure prevention for maintenance and refrigerating system repair
- 9.5.10 Documentation
- 9.6 Handling, recovery, reuse and disposal of refrigerant
- 10 Decommissioning of the TRU
- Annex A (informative)Specifications of control volumes for TRV
- Annex B (informative)Description of mechanisms to reduce risk [Go to Page]
- B.1 General
- B.2 Heat exchanger zoning concept
- B.3 Indirect heat exchanger
- B.4 Heat exchanger separation mechanism, shut-off devices
- B.5 Ventilation mechanism [Go to Page]
- B.5.1 General
- B.5.2 Outside ventilation mechanism
- B.5.3 Inside ventilation mechanism
- B.6 Refrigerant detection
- B.7 Alarm system [Go to Page]
- B.7.1 General
- B.7.2 Types of alarm
- B.7.3 Visible and audible refrigerant leak alarm
- B.7.4 Actions by the alarm system
- Annex C (normative)Information on leak types and leak mass flow
- Annex D (normative)Useful equations for the calculation of environment ventilation [Go to Page]
- D.1 General
- D.2 Dilution of a flammable substance release with air
- D.3 Additional examples [Go to Page]
- D.3.1 Small volume in open air situation
- D.3.2 A Non-ventilated enclosure
- Annex E (normative)Tracer gas measurement for determination of air exchange rate [Go to Page]
- E.1 General
- E.2 Tracer gas measurement with CO2
- E.3 Required air exchange rate for dilution of refrigerant releases inside the compartment volume
- Annex F (informative)Typical ignition sources for risk assessment of TRU
- Annex G (informative)Example process for risk evaluation [Go to Page]
