53.040 - Continuous handling equipment
ICS 53.040 Details
Continuous handling equipment
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This document specifies a test method for the determination of the relaxed elastic modulus of light conveyor belts according to ISO 21183-1 or other conveyor belts where ISO 9856 does not apply.
- Draft12 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a test method for the determination of the maximum tensile strength of light conveyor belts, according to ISO 21183-1, or of other conveyor belts where ISO 283 is not applicable.
- Draft10 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies test methods for determining the dynamic and static coefficients of friction for light conveyor belts according to ISO 21183-1.
- Draft15 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies test methods for determining the dynamic and static coefficients of friction for light conveyor belts according to ISO 21183-1.
- Standard9 pagesEnglish languagesale 15% off
- Standard11 pagesFrench languagesale 15% off
This document specifies a test method for the determination of the maximum tensile strength of light conveyor belts, according to ISO 21183-1, or of other conveyor belts where ISO 283 is not applicable.
- Standard6 pagesEnglish languagesale 15% off
- Standard6 pagesFrench languagesale 15% off
This document specifies a test method for the determination of the relaxed elastic modulus of light conveyor belts according to ISO 21183-1 or other conveyor belts where ISO 9856 does not apply.
- Standard7 pagesEnglish languagesale 15% off
- Standard7 pagesFrench languagesale 15% off
This document specifies the maximum electrical resistance of a conveyor belt and the corresponding test method.
The test is intended to ensure that the belt is sufficiently conductive to avoid the accumulation of electrical static charge which can be developed during service use.
This document is not suitable or applicable to light conveyor belts as described in ISO 21183-1, the static electrical properties of which are measured by ISO 21178.
- Standard13 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a test method for determining the transverse flexibility (troughability) of a conveyor belt, expressed as a ratio, F/L. The method is not suitable or valid for light conveyor belts as described in ISO 21183-1.
NOTE The transverse “flexibility” determined by the method described in this document is only indirectly associated with the inverse of flexural modulus as specified in ISO 178. Nor does it take into consideration the differences in “flexibility” as exhibited by three-point and four-point bending, which takes account of the flexural strain and the thickness of the test piece.
- Standard14 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a static test method for measuring the strength of a conveyor belt mechanical fastening; the mechanical joints can be either of the type employing a connecting rod or of a type which does not employ a connecting rod.
This document does not cover vulcanized joints.
This document is neither applicable to nor valid for light conveyor belts, as described in ISO 21183-1.
NOTE The purpose of the test specified in this document is to eliminate mechanical fastenings of insufficient static strength. It is intended to establish a dynamic test at a later date.
- Draft10 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a static test method for measuring the strength of a conveyor belt mechanical fastening; the mechanical joints can be either of the type employing a connecting rod or of a type which does not employ a connecting rod. This document does not cover vulcanized joints. This document is neither applicable to nor valid for light conveyor belts, as described in ISO 21183-1. NOTE The purpose of the test specified in this document is to eliminate mechanical fastenings of insufficient static strength. It is intended to establish a dynamic test at a later date.
- Standard7 pagesEnglish languagesale 15% off
- Standard7 pagesFrench languagesale 15% off
This document specifies a method of test for the measurement of the propagation resistance of an initial tear in textile conveyor belts, either in full thickness or of the carcass only.
This document is applicable to textile belts in installations where there is a risk of longitudinal tearing.
- Standard13 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies the requirements for dimensional, mechanical, oxygen transmission rate and optical characteristics of thermoplastic stretch films for wrapping bales used for ensiling of forage. It specifies a measurement for solar reflectance of the films.
This document specifies also test methods to check these requirements.
This document is applicable to white, black, or coloured films based on polyethylene materials. It covers the width range from 250 mm up to 1 500 mm.
The performances of the stretch films in conformance with this document are based on the use of at least six layers of films, pre-stretched at a ratio between 60 % and 70 % for round bales and a ratio of 55 % and 65 % for wrapping square bales.
This document also gives guidance for design for recycling.
- Standard38 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a test method for determining the transverse flexibility (troughability) of a conveyor belt, expressed as a ratio, F/L. The method is not suitable or valid for light conveyor belts as described in ISO 21183-1.
NOTE The transverse “flexibility” determined by the method described in this document is only indirectly associated with the inverse of flexural modulus as specified in ISO 178. Nor does it take into consideration the differences in “flexibility” as exhibited by three-point and four-point bending, which takes account of the flexural strain and the thickness of the test piece.
- Standard14 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a test method for determining the transverse flexibility (troughability) of a conveyor belt, expressed as a ratio, F/L. The method is not suitable or valid for light conveyor belts as described in ISO 21183-1. NOTE The transverse “flexibility” determined by the method described in this document is only indirectly associated with the inverse of flexural modulus as specified in ISO 178. Nor does it take into consideration the differences in “flexibility” as exhibited by three-point and four-point bending, which takes account of the flexural strain and the thickness of the test piece.
- Standard6 pagesEnglish languagesale 15% off
- Standard6 pagesFrench languagesale 15% off
This document specifies the requirements for dimensional, mechanical, oxygen transmission rate and optical characteristics of thermoplastic stretch films for wrapping bales used for ensiling of forage. It specifies a measurement for solar reflectance of the films.
This document specifies also test methods to check these requirements.
This document is applicable to white, black, or coloured films based on polyethylene materials. It covers the width range from 250 mm up to 1 500 mm.
The performances of the stretch films in conformance with this document are based on the use of at least six layers of films, pre-stretched at a ratio between 60 % and 70 % for round bales and a ratio of 55 % and 65 % for wrapping square bales.
This document also gives guidance for design for recycling.
- Standard38 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies the maximum electrical resistance of a conveyor belt and the corresponding test method.
The test is intended to ensure that the belt is sufficiently conductive to avoid the accumulation of electrical static charge which can be developed during service use.
This document is not suitable or applicable to light conveyor belts as described in ISO 21183-1, the static electrical properties of which are measured by ISO 21178.
- Standard13 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies the maximum electrical resistance of a conveyor belt and the corresponding test method. The test is intended to ensure that the belt is sufficiently conductive to avoid the accumulation of electrical static charge which can be developed during service use. This document is not suitable or applicable to light conveyor belts as described in ISO 21183-1, the static electrical properties of which are measured by ISO 21178.
- Standard6 pagesEnglish languagesale 15% off
- Standard7 pagesFrench languagesale 15% off
This document specifies a method of test for the measurement of the propagation resistance of an initial tear in textile conveyor belts, either in full thickness or of the carcass only.
This document is applicable to textile belts in installations where there is a risk of longitudinal tearing.
- Standard13 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a method of test for the measurement of the propagation resistance of an initial tear in textile conveyor belts, either in full thickness or of the carcass only. This document is applicable to textile belts in installations where there is a risk of longitudinal tearing.
- Standard6 pagesEnglish languagesale 15% off
- Standard6 pagesFrench languagesale 15% off
This document establishes a list of equivalent terms relating to conveyor belts. NOTE In addition to the terms given in two of the official ISO languages (i.e. English and French), this document gives equivalent terms in Chinese; these terms are published under the responsibility of the member body for China (SAC). However, only the terms given in the official languages can be considered as ISO terms.
- Standard16 pagesEnglish languagesale 15% off
- Standard16 pagesFrench languagesale 15% off
- Standard16 pagesFrench languagesale 15% off
This document specifies the widths and lengths of conveyor belts with a textile carcass. It also specifies the corresponding tolerances. It is not applicable to light conveyor belts as described in ISO 21183-1, as tolerances on the widths and lengths of cut light conveyor belts are given in ISO 15147. NOTE The lengths of conveyor belts are not standardized.
- Standard3 pagesEnglish languagesale 15% off
This document specifies the temperature, humidity and time conditions used for the conditioning and testing of all types of conveyor belt, irrespective of whether they have plastics or rubber covers. It also specifies the requirements for the time interval to be observed between production and testing of conveyor belt test pieces. Special conditions applicable to a particular test or material or simulating a particular climatic environment are not included.
- Standard4 pagesEnglish languagesale 15% off
This document is a collection of interpretations related to the EN 619:2022.
Interpretations aim to improve the understanding of the clause(s) they are referring to and by that facilitating common understanding between manufacturers, installers, notified bodies, inspection bodies and national authorities.
Interpretations do not have the same status as the European standards to which they are related.
However, the application of interpretations give to the interested parties confidence that the relevant European standard has not been wrongly applied. This document is not applicable to the machinery or machinery components manufactured before the date of its publication.
- Technical report48 pagesEnglish languagesale 10% offe-Library read for1 day
This document is a collection of interpretations related to the EN 619:2022.
Interpretations aim to improve the understanding of the clause(s) they are referring to and by that facilitating common understanding between manufacturers, installers, notified bodies, inspection bodies and national authorities.
Interpretations do not have the same status as the European standards to which they are related.
However, the application of interpretations give to the interested parties confidence that the relevant European standard has not been wrongly applied. This document is not applicable to the machinery or machinery components manufactured before the date of its publication.
- Technical report48 pagesEnglish languagesale 10% offe-Library read for1 day
This European Standard is applicable for travelators, with or without a tunnel, for winter sport or leisure use.
These requirements are applicable to travelators for the transport of persons (either passengers or operators) wearing snow-sliding devices, or pedestrians wearing ski boots or heavy boots who may be holding their snow-sliding devices, for winter sports activities. For other uses, the persons (whether passengers or operators) shall wear suitable (enclosed and solid) footwear for travelators.
NOTE Snow-sliding devices include seated ski equipment for handicapped people.
This document has been prepared on the basis of the automatic operation of these installations with no staff permanently present at the actual installation.
It covers requirements relating to the prevention of accidents and the safety of operators.
This document covers all the significant hazards, hazardous situations and hazardous events specific to travelators for winter sport or leisure activities, when they are used in conformity to the application for which they are intended as well as for inappropriate applications that could be reasonably foreseen by the manufacturer (see Clause 4).
This document does not apply either to moving walkways as specified in EN 115 or to loading bands as specified in EN 1907.
This document does not apply to travelators manufactured prior to the date of its publication as an EN.
- Standard118 pagesFrench languagesale 10% offe-Library read for1 day
- Draft77 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies requirements for rubber- or plastics-covered conveyor belting of textile construction for use in underground mines and disposed on flat or troughed idlers. It is not applicable to light conveyor belts as described in ISO 21183-1.
This document does not include requirements for plastics covers. These are agreed upon by the manufacturer and purchaser, taking into account the type of plastics to be used.
Related items that are not requirements of this document, but which it is recommended be agreed upon by the manufacturer and purchaser, are included in Annex A.
Details recommended to be supplied by the purchaser of belting with an enquiry are given in Annex B.
The ability of a belt to run straight cannot be assessed until the belt is installed. Requirements for this are, therefore, outside the scope of this document; nevertheless, recommendations for lateral drift are given in Annex C.
Attention is drawn to local regulations for safety which might be in place where the belts are to be used.
- Standard21 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a test method for the determination of the full thickness tensile strength in the longitudinal direction and the elongation at the reference force and breaking point of conveyor belts having a textile carcass. The method can also be used for the determination of full thickness tensile strength in the transverse direction and the elongation at the breaking point, for use when the manufacturer is requested by the purchaser to state values for these properties.
This document does not apply to light conveyor belts as described in ISO 21183‑1.
- Standard17 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies two test methods, A and B, for determining the adhesion strength between constitutive elements of a conveyor belt, i.e. between plies and between covers and carcass. Basic test conditions are in conformity with ISO 36.
It is applicable to all types of construction of conveyor belting with the exception of belts containing steel cord reinforcement, and textile-reinforced belts with a full-thickness tensile strength of less than 160 N/mm. It is not suitable or valid for light conveyor belts as described in ISO 21183-1[1].
NOTE Methods A and B are alternative options, but the mean adhesive force values calculated for the two methods can be different. Also, as both methods might not be equally suitable for all belt constructions, it is advisable that the advice of the belt manufacturer be sought.
- Standard13 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies requirements for rubber- or plastics-covered conveyor belting of textile construction for use in underground mines and disposed on flat or troughed idlers. It is not applicable to light conveyor belts as described in ISO 21183-1.
This document does not include requirements for plastics covers. These are agreed upon by the manufacturer and purchaser, taking into account the type of plastics to be used.
Related items that are not requirements of this document, but which it is recommended be agreed upon by the manufacturer and purchaser, are included in Annex A.
Details recommended to be supplied by the purchaser of belting with an enquiry are given in Annex B.
The ability of a belt to run straight cannot be assessed until the belt is installed. Requirements for this are, therefore, outside the scope of this document; nevertheless, recommendations for lateral drift are given in Annex C.
Attention is drawn to local regulations for safety which might be in place where the belts are to be used.
- Standard21 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies requirements for rubber- or plastics-covered conveyor belting of textile construction for use in underground mines and disposed on flat or troughed idlers. It is not applicable to light conveyor belts as described in ISO 21183-1. This document does not include requirements for plastics covers. These are agreed upon by the manufacturer and purchaser, taking into account the type of plastics to be used. Related items that are not requirements of this document, but which it is recommended be agreed upon by the manufacturer and purchaser, are included in Annex A. Details recommended to be supplied by the purchaser of belting with an enquiry are given in Annex B. The ability of a belt to run straight cannot be assessed until the belt is installed. Requirements for this are, therefore, outside the scope of this document; nevertheless, recommendations for lateral drift are given in Annex C. Attention is drawn to local regulations for safety which might be in place where the belts are to be used.
- Standard14 pagesEnglish languagesale 15% off
- Standard14 pagesFrench languagesale 15% off
This document specifies a test method for the determination of the full thickness tensile strength in the longitudinal direction and the elongation at the reference force and breaking point of conveyor belts having a textile carcass. The method can also be used for the determination of full thickness tensile strength in the transverse direction and the elongation at the breaking point, for use when the manufacturer is requested by the purchaser to state values for these properties.
This document does not apply to light conveyor belts as described in ISO 21183‑1.
- Standard17 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies test methods for the determination of total belt thickness and the thickness of constitutive elements of conveyor belts having a textile carcass. The constitutive elements include the covers, the carcass and interlayers, i.e. the material between adjoining plies.
This document does not apply to light conveyor belts as described in ISO 21183‑1.
- Standard17 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a method for determining the bond strength of metal cords to their surrounding coating, either in the initial state or after thermal treatment.
It applies exclusively to metal-carcass conveyor belts.
- Standard11 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a test method for the determination of the full thickness tensile strength in the longitudinal direction and the elongation at the reference force and breaking point of conveyor belts having a textile carcass. The method can also be used for the determination of full thickness tensile strength in the transverse direction and the elongation at the breaking point, for use when the manufacturer is requested by the purchaser to state values for these properties. This document does not apply to light conveyor belts as described in ISO 21183‑1.
- Standard10 pagesEnglish languagesale 15% off
- Standard11 pagesFrench languagesale 15% off
This document specifies two test methods, A and B, for determining the adhesion strength between constitutive elements of a conveyor belt, i.e. between plies and between covers and carcass. Basic test conditions are in conformity with ISO 36.
It is applicable to all types of construction of conveyor belting with the exception of belts containing steel cord reinforcement, and textile-reinforced belts with a full-thickness tensile strength of less than 160 N/mm. It is not suitable or valid for light conveyor belts as described in ISO 21183-1[1].
NOTE Methods A and B are alternative options, but the mean adhesive force values calculated for the two methods can be different. Also, as both methods might not be equally suitable for all belt constructions, it is advisable that the advice of the belt manufacturer be sought.
- Standard13 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies test methods for the determination of total belt thickness and the thickness of constitutive elements of conveyor belts having a textile carcass. The constitutive elements include the covers, the carcass and interlayers, i.e. the material between adjoining plies.
This document does not apply to light conveyor belts as described in ISO 21183‑1.
- Standard17 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies two test methods, A and B, for determining the adhesion strength between constitutive elements of a conveyor belt, i.e. between plies and between covers and carcass. Basic test conditions are in conformity with ISO 36. It is applicable to all types of construction of conveyor belting with the exception of belts containing steel cord reinforcement, and textile-reinforced belts with a full-thickness tensile strength of less than 160 N/mm. It is not suitable or valid for light conveyor belts as described in ISO 21183-1[1]. NOTE Methods A and B are alternative options, but the mean adhesive force values calculated for the two methods can be different. Also, as both methods might not be equally suitable for all belt constructions, it is advisable that the advice of the belt manufacturer be sought.
- Standard6 pagesEnglish languagesale 15% off
- Standard6 pagesFrench languagesale 15% off
This document specifies test methods for the determination of total belt thickness and the thickness of constitutive elements of conveyor belts having a textile carcass. The constitutive elements include the covers, the carcass and interlayers, i.e. the material between adjoining plies. This document does not apply to light conveyor belts as described in ISO 21183‑1.
- Standard10 pagesEnglish languagesale 15% off
- Standard10 pagesFrench languagesale 15% off
This document specifies a method for the determination of the tensile strength, in the longitudinal, of steel cords constituting the carcass of conveyor belts.
It applies exclusively to conveyor belts with a steel carcass.
NOTE A method for the determination of elongation is specified in ISO 7622‑1.
- Standard14 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a method for assessing, on a small scale, the reaction of a conveyor belt to an ignition flame source. It is applicable to conveyor belts having a textile carcass as well as steel cord conveyor belts.
- Standard15 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a method for determining the bond strength of metal cords to their surrounding coating, either in the initial state or after thermal treatment.
It applies exclusively to metal-carcass conveyor belts.
- Standard11 pagesEnglish languagesale 10% offe-Library read for1 day
This document defines a method for the determination of the width-related indentation rolling resistance of conveyor belts. The goal is to be a full-scale test and simulation on finished belt constructions which are reproducible and relevant for the practical use. The test results can be used for a comparison of conveyor belts and for design of belt conveyors with steel cord and fabric conveyor belts. This document is not suitable or valid for light conveyor belts described in ISO 21183‑1.
- Standard9 pagesEnglish languagesale 15% off
This document specifies a method for determining the bond strength of metal cords to their surrounding coating, either in the initial state or after thermal treatment. It applies exclusively to metal-carcass conveyor belts.
- Standard4 pagesEnglish languagesale 15% off
- Standard4 pagesFrench languagesale 15% off
This document describes the recommendations for the design and use of screw conveyors and product receivers which can in addition be used as a means for explosion isolation to prevent a dust explosion transmission into connected plant items by using the bulk material which is inside.
The recommendations given in this document are procedural measures since the properties of the bulk material affect the efficacy of this measure essentially (e.g. flow and explosion characteristics). Product receivers and screw conveyors cannot be considered as protective systems under the scope of the ATEX Directive.
As far as screw conveyors are concerned, the scope of this document is limited to rigid, tubular, singular screw conveyors which consist of a spiral blade coiled around a shaft held by external bearings (the rotating part of the conveyor is sometimes called “auger”).
NOTE Additional internal bearings can be necessary if the tubular screw conveyor exceeds a certain length.
This document includes limits of application where a plug of bulk material in a screw conveyor is not possible/sufficient to achieve explosion isolation and also application ranges where a plug of bulk material is not necessary to achieve explosion isolation.
This document does not address the mandatory risk analysis and ignition hazard assessment, which are performed for the application of the screw conveyors and product receivers. The mandatory risk assessment includes start-up and shut-down conditions, when potentially no plug of material is present to prevent explosion propagation. To mitigate this residual risk, it is possible to use as an extra measure, e.g. a traditional gate valve which prevents flame transmission and is able to withstand the expected maximum explosion pressure.
- Technical report19 pagesEnglish languagesale 10% offe-Library read for1 day
This document deals with requirements for machine design, transport, installation, commissioning, operation, adjustment, maintenance and cleaning to minimize the hazards listed in Annex F. These hazards can arise during the operation and maintenance of continuous handling equipment and systems when carried out in accordance with the specifications given by the manufacturer or his authorized representative. This document deals with safety related technical verification during commissioning.
This document applies to mechanical handling devices as defined in Clause 3, singly or combined to form a conveyor system, and designed exclusively for moving unit loads continuously on a predefined route from the loading to the unloading points, possibly with varying speed or cyclically. In general, it also applies to conveyors which are built into machines or attached to machines if not stated otherwise in a machine specific standard.
Safety requirements and/or measures in this document apply to equipment used in all environments. However, additional risk assessments and safety measures need to be considered for uses in severe conditions, e.g.
- freezer applications,
- high temperatures,
- corrosive environments,
- strong magnetic fields,
- potentially explosive atmospheres,
- radioactive conditions and loads the nature of which could lead to a dangerous situation (e.g. molten metal, acids/bases, especially brittle loads, explosives),
- operation on ships and earthquake effects and
- contact with foodstuff.
This document does not cover hazards during decommissioning.
This document does not apply to conveying equipment and systems used underground or in public areas and to aircraft ground support equipment. In public areas only baggage carousels and check-in conveyors for airports are dealt with in this document.
NOTE Aircraft ground support equipment is covered by the standards of CEN/TC 274.
This document is not applicable to continuous handling equipment and systems manufactured before the date of its publication.
- Standard161 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a method for the determination of the tensile strength, in the longitudinal, of steel cords constituting the carcass of conveyor belts.
It applies exclusively to conveyor belts with a steel carcass.
NOTE A method for the determination of elongation is specified in ISO 7622‑1.
- Standard14 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a method for assessing, on a small scale, the reaction of a conveyor belt to an ignition flame source. It is applicable to conveyor belts having a textile carcass as well as steel cord conveyor belts.
- Standard15 pagesEnglish languagesale 10% offe-Library read for1 day
This document deals with requirements for machine design, transport, installation, commissioning, operation, adjustment, maintenance and cleaning to minimize the hazards listed in Annex F. These hazards can arise during the operation and maintenance of continuous handling equipment and systems when carried out in accordance with the specifications given by the manufacturer or his authorized representative. This document deals with safety related technical verification during commissioning.
This document applies to mechanical handling devices as defined in Clause 3, singly or combined to form a conveyor system, and designed exclusively for moving unit loads continuously on a predefined route from the loading to the unloading points, possibly with varying speed or cyclically. In general, it also applies to conveyors which are built into machines or attached to machines if not stated otherwise in a machine specific standard.
Safety requirements and/or measures in this document apply to equipment used in all environments. However, additional risk assessments and safety measures need to be considered for uses in severe conditions, e.g.
- freezer applications,
- high temperatures,
- corrosive environments,
- strong magnetic fields,
- potentially explosive atmospheres,
- radioactive conditions and loads the nature of which could lead to a dangerous situation (e.g. molten metal, acids/bases, especially brittle loads, explosives),
- operation on ships and earthquake effects and
- contact with foodstuff.
This document does not cover hazards during decommissioning.
This document does not apply to conveying equipment and systems used underground or in public areas and to aircraft ground support equipment. In public areas only baggage carousels and check-in conveyors for airports are dealt with in this document.
NOTE Aircraft ground support equipment is covered by the standards of CEN/TC 274.
This document is not applicable to continuous handling equipment and systems manufactured before the date of its publication.
- Standard161 pagesEnglish languagesale 10% offe-Library read for1 day
This document describes the recommendations for the design and use of screw conveyors and product receivers which can in addition be used as a means for explosion isolation to prevent a dust explosion transmission into connected plant items by using the bulk material which is inside.
The recommendations given in this document are procedural measures since the properties of the bulk material affect the efficacy of this measure essentially (e.g. flow and explosion characteristics). Product receivers and screw conveyors cannot be considered as protective systems under the scope of the ATEX Directive.
As far as screw conveyors are concerned, the scope of this document is limited to rigid, tubular, singular screw conveyors which consist of a spiral blade coiled around a shaft held by external bearings (the rotating part of the conveyor is sometimes called “auger”).
NOTE Additional internal bearings can be necessary if the tubular screw conveyor exceeds a certain length.
This document includes limits of application where a plug of bulk material in a screw conveyor is not possible/sufficient to achieve explosion isolation and also application ranges where a plug of bulk material is not necessary to achieve explosion isolation.
This document does not address the mandatory risk analysis and ignition hazard assessment, which are performed for the application of the screw conveyors and product receivers. The mandatory risk assessment includes start-up and shut-down conditions, when potentially no plug of material is present to prevent explosion propagation. To mitigate this residual risk, it is possible to use as an extra measure, e.g. a traditional gate valve which prevents flame transmission and is able to withstand the expected maximum explosion pressure.
- Technical report19 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a method for the determination of the tensile strength, in the longitudinal, of steel cords constituting the carcass of conveyor belts. It applies exclusively to conveyor belts with a steel carcass. NOTE A method for the determination of elongation is specified in ISO 7622‑1.
- Standard6 pagesEnglish languagesale 15% off
- Standard6 pagesFrench languagesale 15% off