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eLibrary > BS 5422:2001 Method for specifying thermal insulating materials for pipes, tanks, vessels, ductwork and equipment operating within the temperature range -40°C to +700°C >

BS 5422:2001 Method for specifying thermal insulating materials for pipes, tanks, vessels, ductwork and equipment operating within the temperature range -40°C to +700°C, 2002

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BS 5422:2001 Method for specifying thermal insulating materials for pipes, tanks, vessels, ductwork and equipment operating within the temperature range -40°C to +700°C, 2002

BRITISH STANDARD [Go to Page]
Committees responsible for this British�Standard
Contents
Introduction [Go to Page]
1 Scope
2 Normative references
3 Definitions [Go to Page]
assumed lifetime
chilled water
cold water
economic thickness
environmental thickness
evaluation period
finishing materials
insulation thickness
pre-applied
termination point
vapour barrier
4 Application of this standard [Go to Page]
Flow chart indicating application of the standard
5 General requirements [Go to Page]
5.1 Physical characteristics
5.2 Installation requirements
5.3 Thermal conductivity
5.4 Temperature limitations
5.5 Thickness
5.6 Fire performance
5.7 Vapour barrier — Permeance requirements [Go to Page]
Maximum permitted water vapour permeance in relation to plant temperature at an ambient temperatu...
5.8 Tests on physical properties
6 Refrigeration applications [Go to Page]
6.1 Information to be supplied by the specifier
6.2 Physical characteristics
6.3 Insulation thickness [Go to Page]
Minimum insulation thickness for refrigeration applications to prevent condensation on a high emi...
Minimum insulation thickness for refrigeration applications to prevent condensation on a low emis...
Minimum insulation thickness for refrigeration applications to prevent condensation on a high emi...
Minimum insulation thickness for refrigeration applications to prevent condensation on a low emis...
Environmental insulation thickness for refrigeration applications to�control heat gain
Environmental insulation thickness for refrigeration applications to control heat gain
7 Chilled and cold water applications [Go to Page]
7.1 Information to be supplied by the specifier
7.2 Physical characteristics
7.3 Insulation thickness [Go to Page]
Minimum insulation thickness for chilled and cold water supplies to�prevent condensation on a hig...
Minimum insulation thickness for chilled and cold water supplies to�prevent condensation on a low...
Environmental insulation thickness for chilled water supplies to control heat gain
8 Central heating, air conditioning and direct hot water supply installations�in non�domestic app... [Go to Page]
8.1 Information to be supplied by the specifier
8.2 Physical characteristics
8.3 Insulation thickness [Go to Page]
Minimum insulation thickness for condensation control on ductwork�carrying chilled air in ambient...
Environmental insulation thickness on ductwork carrying warm�air [Go to Page]
Graph to determine environmental heat gain for intermediate temperatures
Environmental insulation thickness for non-domestic heating installations to control heat loss
Environmental insulation thickness for non-domestic hot water service areas to control heat loss
9 Central heating and hot and cold water services for domestic applications [Go to Page]
9.1 Information to be supplied by the specifier
9.2 Physical characteristics
9.3 Thickness [Go to Page]
Environmental insulation thickness for domestic central heating installations and hot water syste...
10 Process pipework and equipment applications [Go to Page]
10.1 Information to be supplied by the specifier
10.2 Physical characteristics
10.3 Insulation thickness [Go to Page]
Environmental insulation thickness for process pipework and equipment to control heat loss
Environmental insulation thickness for process pipework and equipment to control heat loss
Insulation thickness for personnel protection from a non-metallic surface with a surface emissivi...
Insulation thickness for personnel protection from a non-metallic surface with a surface emissivi...
Insulation thickness for personnel protection from a metallic surface�with a surface emissivity o...
Insulation thickness for personnel protection from a metallic surface with a surface emissivity o...
Insulation thickness for personnel protection from a non-metallic surface with a surface emissivi...
Insulation thickness for personnel protection from a non-metallic surface with a surface emissivi...
Heat loss from bare surfaces calculated in accordance with BS�EN�ISO�12241 (black steel pipes)
Heat loss from bare surfaces calculated in accordance with BS�EN�ISO�12241 (copper pipes — commer...
Heat loss from bare surfaces calculated in accordance with BS�EN�ISO�12241 (copper pipes — oxidized)
11 Protection against freezing [Go to Page]
11.1 Information to be supplied by the specifier
11.2 Insulation thickness [Go to Page]
Minimum insulation thickness to protect steel pipes against freezing�under selected industrial pr...
Minimum insulation thickness required to give protection against�freezing under specified commerc...
Minimum insulation thickness to protect against freezing for domestic cold water systems�(12�h)
Minimum insulation thickness to protect against freezing for domestic cold water systems�(8�h)
(informative) Determination of environmental thickness [Go to Page]
(informative) Determination of environmental thickness [Go to Page]
Heat loss related to pipe diameter for non-domestic heating pipe�at�75�°C insulated in accordance...
Environmental thickness methodologies
(informative) Default values for use in BS�EN�ISO�12241 heat transfer�calculations [Go to Page]
(informative) Default values for use in BS�EN�ISO�12241 heat transfer�calculations
General [Go to Page]
Surface emissivity (()
Default data [Go to Page]
Default data for use in BS�EN�ISO�12241 calculations
(informative) Summary of criteria used to establish the tables [Go to Page]
(informative) Summary of criteria used to establish the tables [Go to Page]
Summary of criteria used to establish the tables
(informative) Outside diameters of steel and copper pipes [Go to Page]
(informative) Outside diameters of steel and copper pipes [Go to Page]
Outside diameter of steel pipe
Outside diameter of copper pipe
(informative) Explanation of “Class 0” rating and “limited combustibility” [Go to Page]
(informative) Explanation of “Class 0” rating and “limited combustibility”
Class�0
Limited combustibility
Euro-classes
(normative) Method for assessing the system load for refrigeration pipe�work [Go to Page]
(normative) Method for assessing the system load for refrigeration pipe�work
Determination of total system heat gain
Determining the Coefficient of Performance (CoP) for the system
Assessing the distribution pipe-work load [Go to Page]
Example of Mollier diagram for R-22
(normative) Calculation of economic insulation thickness [Go to Page]
(normative) Calculation of economic insulation thickness
Principle [Go to Page]
Economic thickness
Method of calculating economic thickness [Go to Page]

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