SIST EN 13160-4:2003
(Main)Leak detection systems - Part 4: Liquid and/or vapour sensor systems for use in leakage containments or interstitial spaces
Leak detection systems - Part 4: Liquid and/or vapour sensor systems for use in leakage containments or interstitial spaces
This standard specifies the requirements for leak detection systems - class III for use in the interstitial space of double-skin systems or in leakage containments of single skin systems designed for water polluting fluids.
Leckanzeigesysteme - Teil 4: Flüssigkeits- und/oder Gassensorensysteme in Leckage oder Überwachungsräumen
Diese Europäische Norm legt die Anforderungen an Leckanzeigesysteme - Klasse III für den Einsatz in Überwachungsräumen von doppelwandigen Systemen oder in Leckageräumen von einwandigen Systemen für wassergefährdende Flüssigkeiten, fest. Diese Europäische Norm gilt nicht für Leckanzeigesysteme, die nicht wiederverwendbare Sensoren verwenden.
Systemes indicateurs de fuites - Partie 4: Systemes de détection de liquide et/ou gaz dans des espaces de confinement ou des espaces interstitiels
La présente Norme européenne spécifie les prescriptions relatives aux systemes de détection de fuites de classe III conçus pour une utilisation dans l'espace interstitiel des systemes a double paroi ou dans les espaces de confinement des systemes a simple paroi destinés a transporter des liquides polluant l'eau. La présente Norme européenne ne s'applique pas aux systemes de détection de fuites utilisant des détecteurs non réutilisables.
Sistemi za kontrolo tesnosti - 4. del: Sistemi za detekcijo puščanja tekočin in/ali plinov v vmesnih prostorih in zadrževalnikih
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Leckanzeigesysteme - Teil 4: Flüssigkeits- und/oder Gassensorensysteme in Leckage oder ÜberwachungsräumenSystemes indicateurs de fuites - Partie 4: Systemes de détection de liquide et/ou gaz dans des espaces de confinement ou des espaces interstitielsLeak detection systems - Part 4: Liquid and/or vapour sensor systems for use in leakage containments or interstitial spaces23.020.01Fluid storage devices in generalICS:Ta slovenski standard je istoveten z:EN 13160-4:2003SIST EN 13160-4:2003en01-december-2003SIST EN 13160-4:2003SLOVENSKI
STANDARD
SIST EN 13160-4:2003
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13160-4May 2003ICS 23.020.01; 23.040.99; 29.260.20English versionLeak detection systems - Part 4: Liquid and/or vapour sensorsystems for use in leakage containments or interstitial spacesSystèmes indicateurs de fuites - Partie 4: Systèmes dedétection de liquide et/ou gaz dans des espaces deconfinement ou des espaces interstitielsLeckanzeigesysteme - Teil 4: Flüssigkeits- und/oderGassensorensysteme in Leckage oderÜberwachungsräumenThis European Standard was approved by CEN on 10 March 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13160-4:2003 ESIST EN 13160-4:2003
EN 13160-4:2003 (E)2ContentspageForeword.31Scope.32Normative references.33Terms and definitions.44General.45Interstitial space.46Leakage containment.47Liquid sensor.58Vapour sensor.59Leak indicating device.510Type test of the liquid sensors.510.1Test objective.510.2Evaluation.510.3Test equipment.610.4Test method.610.5Test results.810.6Sensor marking.811Type test of discriminating liquid sensors.811.1Discriminating liquid sensors for bulk quantities of stored product and water.811.2Discriminating liquid sensors for detection of thin films of stored product on water.1112Type test of vapour sense.1412.1Test objective.1412.2Evaluation.1412.3Test equipment.1512.4Test method.1712.5Test report.1812.6Sensor marking.1913Type test of submerged vapour sensors.1913.1Test objective.1913.2Evaluation.1913.3Test equipment.1913.4Test method.2013.5Test result.21SIST EN 13160-4:2003
EN 13160-4:2003 (E)3ForewordThis document (EN 13160-4:2003) has been prepared by Technical Committee CEN /TC 221, "Shop fabricatedmetallic tanks and equipment for storage tanks and for service stations", the secretariat of which is held by DIN.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by November 2003, and conflicting national standards shall be withdrawn at the latestby November 2003.This European Standard consists of 7 parts:Leak detection systems;Part 1:General principlesPart 2:Pressure and vacuum systemsPart 3:Liquid systems for tanksPart 4:Liquid and/or vapour sensor systems for use in leakage containments or interstitial spacesPart 5:Tank gauge leak detection systemsPart 6:Sensors in monitoring wellsPart 7:General requirements and test methods for interstitial spaces, leak protecting linings and leakprotecting jacketsAccording to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countriesare bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia,Spain, Sweden, Switzerland and the United Kingdom.1 ScopeThis European Standard specifies the requirements for leak detection systems - class III for use in the interstitialspace of double-skin systems or in leakage containments of single skin systems designed for water polluting fluids.This European Standard is not applicable to leak detection systems using non re-usable sensors.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 13160–1:2003, Leak detection systems — Part 1: General principles.EN 13160–7, Leak detection systems — Part 7: General requirements and test methods for interstitial spaces, leakprotecting linings and leak protecting jackets.SIST EN 13160-4:2003
EN 13160-4:2003 (E)43 Terms and definitionsFor the purposes of this European Standard, the terms and definitions given in EN 13160-1:2003 apply.4 GeneralGeneral principles according to EN 13160-1.Where the requirement is for low temperature performance the alternative test temperature is shown in brackets [.].Liquid or vapour sensors shall be installed in such a way that they can detect specific liquids or their vapours presentin or entering the leakage containment or interstitial space.The leakage containment can take the form of a sump or riser containing spills from leaks in double wall lines or pumps; bund, designed to contain leakage from a storage tank or from any other facility containing liquids; other facilities in which sensors can be installed to detect the presence of liquids or vapours.5 Interstitial spaceGeneral requirements concerning the interstitial space according to EN 13160–7.The design of the interstitial space intended to detect liquid shall allow detection of a minimum amount of 10 l of aspecific liquid present in or entering the interstitial space.The interstitial space shall allow an installation of the sensor at the deepest point of the interstitial space.The interstitial space shall be constructed so that the leakage liquid shall reach the deepest point of the interstitialspace.For a tank, the system shall be designed so that there are no connections to the inner tank through the interstitialspace, below the maximum filling level.For a pipe, the system shall be designed so that there are no connections to the inner pipe through the interstitialspace.The interstitial space shall be capable of being tested for integrity.6 Leakage containmentThe design of leakage containment intended to detect liquid shall allow detection of a minimum amount of 10 l of aspecific liquid present in or entering the containment.The number of sensors of the system shall correspond to the intended number of low points in the leakagecontainment.NOTEThe design of a leakage containment should allow that liquid leaking from any point in the primary system will collectin at least one of a number of low points in the leakage containment.The leakage containment shall be liquid tight and impervious to the stored product, water or any other substancewith which it is likely to come into contact, and shall have no outlets below the level of the maximum containedvolume.If protection against ingress of water is not possible, technical measures have to be taken to avoid impairment ofthe function of the leak detector.SIST EN 13160-4:2003
EN 13160-4:2003 (E)5No penetrations through the walls of the leakage containment shall be made which might interfere with its functionsas leakage containment.It shall be possible to test the leakage containment for leaks.If the leakage containment is used as a bund for a primary system holding liquids then the walls of the bund shallfully surround the system and shall be capable of containing the entire contents of the primary system.7 Liquid sensorLiquid sensors shall detect specific liquids they can normally come into contact with (e. g. stored product, water).Liquid sensors shall comply with the test criteria according to clauses 10 or 11, as appropriate.8 Vapour sensorVapour sensors shall detect specific vapours from stored products.Vapour sensors shall comply with the test criteria according to clause 12.9 Leak indicating deviceA leak indicating device shall be provided.An alarm shall indicate when the presence of stored product and/or water is detected.10 Type test of the liquid sensors10.1 Test objectiveThe aim of the test is to verify the suitability of a sensor system to detect the ingress of liquid into the interstitial spaceor leakage containment, where this space is normally dry. Tests shall be performed to verify: the response time of the sensor system in indicating the presence of liquid, where the liquid level is rising at agiven rate; the recovery time of the sensor system from a liquid-indicating condition following its removal from thepresence of liquid.A sensor system shall be qualified for use with each type of liquid that it shall be required to detect. Where possible,tests shall be performed using these actual liquids, however where significant hazards may result, a less harmful testliquid may be used having similar chemical and physical properties. For example, a substitute for petroleum spiritwould be petroleum naphtha (an aliphatic petroleum distillate).10.2 EvaluationTests shall be deemed to have been passed where: the presence of liquids is not indicated when no liquid is present; the presence of liquid is indicated within 30 min after liquid is first introduced into the test system at the rate of10 l/h; the presence of liquid is indicated within 6 min after liquid is first introduced into the test system at the rate of50 l/h;SIST EN 13160-4:2003
EN 13160-4:2003 (E)6 the sensor has a measurable recovery time of max 20 h after removal of the test liquid.These criteria shall be satisfied over the range of environmental conditions specified in the test in 10.4.The system shall remain in the alarm condition until the sensor has recovered and the alarm has been reset.10.3 Test equipmentA test vessel in the form of a flat-bottomed vertical cylinder, having a horizontal cross-sectional area of(0,1 ± 0,002) m2 (i.e. a liquid depth of 0,01 m corresponds to a volume of 1 l) and a minimum depth of 0,6 m. Oneor more fittings flush with the inside surface of the vessel shall be provided in the floor of the vessel for theintroduction of liquids. A similar fitting shall be provided having a drain cock capable of emptying the vessel at arate of 5 l/min.Suitable quantities of each liquid for qualification (or suitable test liquids).A calibrated metering pump (with a reservoir of minimum 6 l capacity) capable of delivering liquid into the testvessel, at the rates specified in 10.2, with an accuracy of 2 %.An environmental chamber the temperature of which can be varied over the range from - 25 C to + 70 C with anaccuracy of 2 K.For the test in a temperature range from – 40 °C to + 40 °C an environmental chamber the temperature of whichcan be varied over a range from – 50 °C to + 40 °C with an accuracy of 2 K.A stop clock having a time indication in steps of 1 s to a minimum total of 24 h, with an accuracy of 2 s.10.4 Test method10.4.1PreparationThe sensor under test shall befixed in its normal orientation ensuring contact with the floor of the test vessel but awayfrom any ports for the entry or extraction of liquid. The manufacturer's fittings should be used wherever possible. Thetest vessel and metering pump reservoir shall be mounted inside the environmental chamber. The sensor under testshall be connected to the leak indicating device which shall be mounted outside the environmental chamber inambient laboratory conditions.Prior to the series of tests for each liquid for which the sensor system shall be qualified, the metering pump reservoirshall be charged with the appropriate liquid or test liquid.Power shall be applied to the sensor system, which shall then be initialised by means specified in the manufacturer'soperating instructions to obtain fully operational conditions.10.4.2StabilisationPrior to each test to be conducted, and with the sensor system fully operational, the environmental chamber shall bepreset to the required test temperature and shall be allowed to stabilize for 30 min after the internal temperaturereaches the prescribed test temperature ± 2 K.10.4.3ProcedureFor each test to be conducted, the following procedure shall be used: the leak indicating device shall be checked. If the presence of liquid is indicated, the test shall be terminated; the metering pump shall be set to the specified pumping rate; zero the stop clock; the metering pump shall be started;SIST EN 13160-4:2003
EN 13160-4:2003 (E)7 at the moment liquid starts to flow from the inlet fitting into the test vessel, the stop clock shall be started; at the moment when the leak indicating device first indicates the presence of liquid, by means specified in themanufacturer's instructions, or if the maximum response time is exceeded, the stop clock and the meteringpump shall be stopped; the stop clock elapsed time (measured response time) shall be recorded; zero the stop clock; the test vessel drain cock shall be opened; at the moment the vessel is empty of liquid the stop clock shall be started; at the moment when the leak indicating device indicates the absence of liquid, by means specified in themanufacturer's instructions, or if a period of 20 h is exceeded the stop clock shall be stopped; the stop clock elapsed time (measured recovery time) shall be recorded.10.4.4Test schedule10.4.4.1The following series of tests shall be performed twice for each liquid for which the sensor system is tobe qualified:10.4.4.2Environmental temperature:- 20 C [- 40 °C]Metered pump rate:10 l/hMaximum response time:30 min10.4.4.3Environmental temperature:- 20 C [- 40 °C]Metered pump rate:50 l/hMaximum response time:6 min10.4.4.4Environmental temperature:+ 20 C [+ 40 °C]Metered pump rate:10 l/hMaximum response time:30 min10.4.4.5Environmental temperature:+ 20 C [+ 40 °C]Metered pump rate:50 l/hMaximum response time:6 min10.4.4.6Environmental temperature:+ 60 CMetered pump rate:10 l/hMaximum response time:30 minSIST EN 13160-4:2003
EN 13160-4:2003 (E)810.4.4.7Environmental temperature:+ 60 CMetered pump rate:50 l/hMaximum response time:6 minWhere the freezing point of the liquid for qualification is above - 25 C [- 45 °C], tests 10.4.4.2 and 10.4.4.3 shall beperformed at a temperature equal to the freezing point plus 5 K.Where the flash point of the liquid for qualification is below + 70 C, tests 10.4.4.6 and 10.4.4.7 shall be performed ata temperature equal to the flash point minus 10 K.10.5 Test resultsFor each test in the schedule for a particular liquid, the measured response times shall be compared to the relevantcriteria listed in 10.2 to determine whether the test has been passed or failed. If any criterium in any test is not metor if at any time a leak is indicated when no liquid is present (other than during the recovery time) the sensorsystem shall be deemed to have failed the test and shall not qualified for use with that liquid. Any such a failure willnot prevent qualification for use with any other liquid for which the test is passed. The worst case response andrecovery time for any of the series of tests shall be recorded.10.6 Sensor markingEach sensor shall carry the following markings: approved liquids – for which the sensor has been tested; response time – worst case from any test for each of the approved liquids; recovery time – worst case from any test for each of the approved liquids.Alternatively, the sensor shall be marked with a reference to a specification incorporating the same information.11 Type test of discriminating liquid sensors11.1 Discriminating liquid sensors for bulk quantities of stored product and water11.1.1Test objectiveThe aim of the test is to verify the suitability of a sensor system to detect the presence of stored product and water inthe monitored area. Tests shall be performed to verify: the response time of the sensor system in indicating the presence of the stored product, where the liquid levelis rising at a given rate; the recovery time of the sensor system from a stored product-indicating condition following its removal from thepresence of the stored product.A sensor system shall be qualified for use with each type of liquid that it shall be required to detect. Where possible,tests shall be performed using these actual liquids, however where significant hazards may result, a less harmful testliquid may be used having similar chemical and physical properties. For example, a substitute for petroleum spiritwould be petroleum naphtha (an aliphatic petroleum distillate).SIST EN 13160-4:2003
EN 13160-4:2003 (E)911.1.2EvaluationTests shall be deemed to have been passed where: the presence of stored product is not indicated when no stored product is present whether water is present ornot; with the sensor submerged in water to varying degrees, the presence of stored product is indicated within30 min after liquid is first introduced into the test system at the rate of 10 l/h; with the sensor submerged in water to varying degrees, the presence of stored product is indicated within6 min after liquid is first introduced into the test system at the rate of 50 l/h; the sensor has to have a measurable recovery time of maximum 20 h after removal of the stored product.These criteria shall be satisfied over the range of environmental conditions specified in the test in 11.1.4.The system shall remain in the alarm condition until the sensor has recovered and the alarm has been reset.11.1.3Test equipmentA test vessel in the form of a flat-bottomed vertical cylinder, having a horizontal cross-sectional area of(0,1 ± 0,002) m2 (i. e. a liquid depth of 0,01 m corresponds to a volume of 1 l) and a minimum depth of 0,6 m. Oneor more fittings flush with the inside surface of the vessel shall be provided in the floor of the vessel for theintroduction of liquids. Where water is present and the test temperature is such that ice will form, liquid shall also becapable of being introduced into the test vessel from above.
A similar fitting shall be provided having a drain cock, orsuitable syphon system, capable of emptying the vessel at a rate of 5 l/min.Suitable quantities of each liquid for qualification (or suitable test liquids).A calibrated metering pump (with a reservoir of minimum 6 l capacity) capable of delivering liquid into the testvessel, at the rates specified in 11.1.2 within an accuracy of 2 %.An environmental chamber the temperature of which can be varied over the range from - 25 C to + 70 C with anaccuracy of 2 K.For the test in a temperature range from – 40 °C to + 40 °C an environmental chamber the temperature of whichcan be varied over the range from – 50 °C to + 40 °C with an accuracy of 2 K.A stop clock having a time indication in steps of 1 s to a minimum total of 24 h, with an accuracy of 2 s.11.1.4Test method11.1.4.1PreparationThe sensor under test shall be fixed in its normal orientation ensuring contact with the floor of the test vessel but awayfrom any ports for the entry or extraction of liquid. The manufacturer's fittings should be used wherever possible. Thetest vessel and metering pump reservoir shall be mounted inside the environmental chamber. The sensor under testshall be connected to the leak indicating device under test which shall be mounted outside the environmentalchamber in ambient laboratory conditions.Prior to the series of tests for each liquid for which the sensor system shall be qualified, the metering pump reservoirshall be charged with the appropriate liquid or test liquid and the test vessel filled with water to the appropriate level.Power shall be applied to the sensor system which shall be then initialised by means specified in the manufacturer'soperating instructions such that the system is fully operational.11.1.4.2StabilisationPrior to each test to be conducted, and with the sensor system fully operational, the environment chamber shall bepreset to the required test temperature, and shall be allowed to stabilize for 30 min after the internal temperaturereaches the prescribed test temperature ± 2 K.SIST EN 13160-4:2003
EN 13160-4:2003 (E)1011.1.4.3ProcedureFor each test to be conducted, the following procedure shall be used, using the correct water level: the leak indicating device shall be checked. If the presence of test liquid is indicated, the test shall beterminated; the metering pump shall be set to the specified pumping rate; zero the stop clock; the metering pump shall be started; at the moment liquid starts to flow from the inlet fitting into the test vessel, the stop clock shall be started; at the moment when the leak indicating device first indicates the presence of the test liquid, by meansspecified in the manufacturer's instructions, or if the maximum response time is exceeded, the stop clock andthe metering pump shall be stopped; the stop clock elapsed time (measured response time) shall be recorded; zero the stop clock; the test vessel drain cock shall be opened, or the syphon shall be started; at the moment when the vessel is empty of liquid, the stop clock shall be started; at the moment when the leak indicating device indicates the absence of liquid, by the means specified in themanufacturer's instructions, or if a period of 20 h is exceeded, the stop clock shall be stopped; the stop clock elapsed time (measured recovery time) shall be recorded.11.1.4.4Test scheduleThe following series of tests shall be performed twice, initially with the test liquid alone, and then repeated with waterpresent at depths of 10 %, 50 % and 90 % of the sensors effective length. This series shall be repeated for each liquidfor which the sensor system is to be qualified:11.1.4.4.1Environmental temperature:- 20 C [- 40 °C]Metered pump rate:10 l/hMaximum response time:30 min11.1.4.4.2Environmental temperature:- 20 C [- 40 °C]Metered pump rate:50 l/hMaximum response time:6 min11.1.4.4.3Environmental temperature:+ 20 C [+ 40 °C ]Metered pump rate:10 l/hMaximum response time:30 minSIST EN 13160-4:2003
EN 13160-4:2003 (E)1111.1.4.4.4Environmental temperature:+ 20 C [+ 40 °C]Metered pump rate:50 l/hMaximum response time:6 min11.1.4.4.5Environmental temperature:+ 60 CMetered pump rate:10 l/hMaximum response time:30 min11.1.4.4.6Environmental temperature:+ 60 CMetered pump rate:50 l/hMaximum response time:6 minWhere the freezing point of the liquid for qualification is above - 25 C [- 45 °C], tests 11.1.4.4.1 and 11.1.4.4.2 shallbe conducted at a temperature equal to the freezing point plus 5 K.Where the flash point of the liquid for qualification is below + 70 C, tests 11.1.4.4.5 and 11.1.4.4.6 shall be conductedat a temperature equal to the flash point minus 10 K.11.1.5Test report For each test in the schedule for a particular liquid, the measured response times shall be compared to the relevantcriteria, listed in 11.1.2 to determine whether the test has been passed or failed. If any criterion in any test is not met,or if at any time a leak is indicated when no liquid is present (other than during the recovery time) the sensor systemshall be deemed to have failed the test, and shall not be qualified for use with that liquid. Any such a failure will notprevent qualification for use with any other liquid for which the test is passed. The worst case response and recoverytime for any of the series of tests shall be recorded.11.1.6Sensor markingEach sensor shall carry the following markings: approved liquids – for which the sensor has been tested; response time – worst case from any test for each of the approved liquids; recovery time – worst case from any test for each of the approved liquids.Alternatively, the sensor shall be marked with a reference to a specification incorporating the same information.11.2 Discriminating liquid sensors for detection of thin films of stored product on water11.2.1Test objectiveThe aim of the test is to verify the suitability of a sensor system to detect the presence of stored product as a thin filmfloating on water in the monitored area, where the level of water in the monitored area may vary. Tests shall beperformed to verify: that the worst response time of the sensor system to detect the presence of a film 0,5 mm thick of the storedproduct floating on water is less than 6 h. that the sensor can be quickly recovered, manually reset and reinstalled following its removal of the storedproduct, or that the recovery time of the sensor system from a stored product-indicating condition following itsremov
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