BS EN 13451-3:2011+A3:2016 13451-3:2011+A2:2014 BS EN 13451-3:2011 +A1:2013 BSI Standards Publication Swimming pool equipment Part 3: Additional specific safety requirements and test methods for inlets and outlets and water/air based water leisure features BS EN 13451-3:2011+A3:2016 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 13451-3:2011+A3:2016 It supersedes BS EN 13451-3:2011+A2:2014, which is withdrawn The start and finish of text introduced or altered by amendment is indicated in the text by tags Tags indicating changes to CEN text carry the number of the CEN amendment For example, text altered by CEN amendment A1 is indicated by The UK participation in its preparation was entrusted by Technical Committee SW/136, Sports, playground and other recreational equipment, to Subcommittee SW/136/8, Swimming pools and aquatic equipment A list of organizations represented on this subcommittee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application © The British Standards Institution 2016 Published by BSI Standards Limited 2016 ISBN 978 580 90747 ICS 97.220.10 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2011 Amendments/corrigenda issued since publication Date Text affected 30 September 2013 Implementation of CEN amendment A1:2013 30 June 2014 Implementation of CEN amendment A2:2014 31 March 2016 Implementation of CEN amendment A3:2016 EN 13451-3:2011+A3 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM February 2016 ICS 97.220.10 Supersedes EN 13451-3:2011+A2:2014 English Version Swimming pool equipment - Part 3: Additional specific safety requirements and test methods for inlets and outlets and water/air based water leisure features Équipement de piscine - Partie 3: Exigences de sécurité et méthodes d'essai complémentaires propres aux pièces d'aspiration et de refoulement et aux équipements de loisirs aquatiques disposant d'introduction et d'extraction d'eau/d'air Schwimmbadgeräte - Teil 3: Zusätzliche besondere sicherheitstechnische Anforderungen und Prüfverfahren für Ein- und Ausläufe sowie WasserLuftattraktionen This European Standard was approved by CEN on 29 July 2011 and includes Amendment approved by CEN on 14 June 2013, Amendment approved by CEN on March 2014 and Amendment approved by CEN on 14 December 2015 CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels © 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members Ref No EN 13451-3:2011+A3:2016 E BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) Contents Page European foreword Scope Normative references Terms and definitions 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 Safety requirements General Structural integrity Water speed at inlets Hair entrapment Slip resistance of grilles Risk of suction entrapment Positioning of leisure features 12 Stream channels and rivers 12 Additional requirements for specific leisure features 13 5.1 5.2 5.3 Test methods 15 General 15 Structural integrity 15 Hair entrapment test 18 Documentation 22 Annex A (informative) Obstruction test for floor outlets suction grills 23 A.1 General 23 A.2 Test device 23 A.3 Water flow 25 A.4 Procedure 25 A.5 Evaluation 26 Annex B (informative) Water speed 27 B.1 General 27 B.2 Calculation methods 27 B.3 Test Methods 27 B.4 Design stage 28 B.5 Suction points in operation 28 Annex C (normative) Entrapment of hair in slits 30 C.1 Testing equipment 30 C.2 Test method 30 C.3 Evaluation 30 Bibliography 31 BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) European foreword This document (EN 13451-3:2011+A3:2016) has been prepared by Technical Committee CEN/TC 136 “Sports, playground and other recreational facilities and equipment”, 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 or by endorsement, at the latest by August 2016, and conflicting national standards shall be withdrawn at the latest by August 2016 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights This document includes Amendment 1, approved by CEN on 2013-06-14, Amendment 2, approved by CEN on 2014-03-06 and Amendment 3, approved by CEN on 2015-12-14 This document supersedes %EN 13451-3:2011+A2:2014& The start and finish of text introduced or altered by amendment is indicated in the text by tags !", #$ and %& The European Standard EN 13451 Swimming pool equipment consists of: — Part 1: General safety requirements and test methods; — Part 2: Additional specific safety requirements and test methods for ladders, stepladders and handle bends; — Part 3: Additional specific safety requirements and test methods for inlets and outlets and water/air based water leisure features; — Part 4: Additional specific safety requirements and test methods for starting platforms; — Part 5: Additional specific safety requirements and test methods for lane lines; — Part 6: Additional specific safety requirements and test methods for turning boards; — Part 7: Additional specific safety requirements and test methods for water polo goals; — Part 10: Additional specific safety requirements and test methods for diving platforms, diving springboards and associated equipment; — Part 11: Additional specific safety requirements and test methods for moveable pool floors and moveable bulkheads %deleted text& According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) Scope This European Standard specifies safety requirements and test methods for inlets and outlets for water/air and water/air based leisure features involving water movement, in addition to the general safety requirements of EN 13451-1:2011 The requirements of this specific standard take priority over those in EN 13451-1:2011 This part of EN 13451 is applicable to swimming pool equipment designed for: — the introduction and/or extraction of water for treatment or leisure purposes; — the introduction of air for leisure purposes; — water leisure features involving the movement of water NOTE The above items are identified with the general term devices Normative references !The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies." EN 1069-1, Water slides — Part 1: Safety requirements and test methods EN 13451-1:2011, Swimming pool equipment — Part 1: General safety requirements and test methods EN 15288-1, Swimming pools — Part 1: Safety requirements for design EN 15288-2, Swimming pools — Part 2: Safety requirements for operation Terms and definitions For the purposes of this document, the terms and definitions given in EN 13451-1:2011 and the following apply 3.1 floor/wall inlet device designed to be installed into the pool floor/wall for introducing water/air in the pool 3.2 floor water outlet device designed to be installed into the pool floor, for the extraction of water, by gravity or by suction 3.3 wall water outlet device designed to be installed into the pool wall for the extraction of water, by gravity or by suction 3.4 sump vessel between the suction outlet grille and the suction outlet piping, manufactured or field built BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) 3.5 skimmer device designed to skim the uppermost layer of water only and return it to the filtration system 3.6 overflow channel channel to take in the overflowing water of the related basin, as part of the filtration circuit ! Note to entry:" An overflow channel could be located, e.g at deck level; built into the basin wall 3.7 grille component to cover any opening, designed to allow the passage of water and/or air EXAMPLE grille A grille could be an inlet grille, an outlet grille, an overflow channel grille, a deck level channel 3.8 cover protection device or assembly that separates the user from hazards caused by an opening 3.9 water speed water flow through velocity in the open cross section of an opening 3.10 air speed air flow through velocity in the open cross section of an opening 3.11 open cross section of a grille sum of all single open sections of the grille as designed through which the corresponding flow rate can flow 3.12 water operated leisure feature feature formed as a result of water, being emitted either into or from a swimming pool EXAMPLE Waves, water cannons, rain sprays, waterfalls, mushrooms and rapid rivers EXAMPLE Geysers, bubble seats EXAMPLE Hydromassages 3.13 air operated leisure feature feature formed as a result of air, being emitted into swimming pool water 3.14 air and water operated leisure feature feature formed as a result of air and water, being concurrently emitted into or from a swimming pool BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) 3.15 integrated swim jet system device that incorporates suction outlet and inlet in a single housing that is designed to move a large volume of water at high velocity one directional 3.16 gravity feed tank tank that is filled by pool water flowing by gravity only, intended as a separation element between the pool and the suction pumps 3.17 vacuum release system system or device capable of providing vacuum release at a suction outlet in case of a high vacuum occurrence due to suction outlet flow blockage 3.18 vortex pool pool characterised by swirling water movement Safety requirements 4.1 General As the components defined in Clause are integral parts of an overall system, special attention shall be paid to the system design criteria, especially taking into consideration the interaction between different components Where leisure water features are created by the introduction of air and/or water under pressure into the pool water, the safety of the users shall be provided by means of a risk assessment according to EN 15288-1 and EN 15288-2, including consideration of their design, location, method of operation, warning signals and supervision 4.2 Structural integrity 4.2.1 Floor inlets Floor inlets shall be tested for: — vertical load and deformation, according to 5.2.2; — horizontal load and deformation, if applicable, according to 5.2.3; — point load according to 5.2.4; — shear load, if applicable according to 5.2.5 4.2.2 Wall inlets Wall inlets installed between water level and 800 mm depth shall be designed to withstand a load equivalent to 100 % of the load according to EN 13451-1:2011, A.2.2 Wall inlets installed > 800 mm below water level shall be designed to withstand a load equivalent to 10 % of the load according to EN 13451-1:2011, A.2.2 Wall inlets shall be tested for: BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) — horizontal load and deformation, if applicable, according to 5.2.3; — point load according to 5.2.4; — shear load, if applicable, according to 5.2.5 4.2.3 Floor and wall water outlets Floor and wall water outlets shall be designed to withstand the load according to EN 13451-1:2011, A.2.2 Floor and wall water outlets shall be tested for: — vertical load and deformation, according to 5.2.2; — horizontal load and deformation, if applicable, according to 5.2.3; — point load according to 5.2.4; — shear load, if applicable, according to 5.2.5; — vacuum and point impact according to 5.2.6; — hair entrapment in accordance with 5.3 4.2.4 Grilles 4.2.4.1 General Grilles and their substructure shall be designed to withstand the load according to EN 13451-1:2011, A.2.2 related to their shape (point, line or area load) Grilles shall be tested for vertical load and deformation, in accordance with 5.2.2 In case of manufactured substructures (e.g overflow channel) also the complete assembly of grill and substructure shall be tested for vertical load and deformation in accordance with 5.2.2 4.2.4.2 Grilles for overflow channels Grilles made up from separate elements shall remain interconnected under conditions of use Grilles shall be designed to remain in position and to prevent their movement when subject to normal conditions of use 4.2.5 Skimmer weir As the floating weir is an essential component for skimming the uppermost layer of the water only, it shall be always properly working It shall be removable only by intentional manoeuvre or with the use of tools 4.2.6 Skimmer top covers If the upper part of the skimmers is placed in a walkable area, it shall be designed to withstand the load according to EN 13451-1:2011, A.2.2 Lids shall be removable only by intentional manoeuvre or with the use of tools Skimmer top covers shall be tested for vertical load and deformation according to 5.2.2 BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) of 300 mm above the uppermost portion of the device Actuate the pump and regulate the flow to the manufacturer's recommended flow rate Saturate the hair for a minimum of in test water After being saturated, place the free end of the hair approximately 300 mm in front of the device and above the uppermost surface of the face of the device (see #Figure 6b)$) Slowly move the hair ends closer to the device and feed the ends of the hair into the device in the direction of the intake flow Continue to slowly feed the hair by moving the rod from side to side while shortening each pass of the rod for at least Then, lay the hair against the device for at least 30 s (see #Figure 6c)$) The surface of the device shall be divided in areas of about 50 cm x 50 cm In the centre of each area and additionally above the pipe, where the highest water speeds occurs, one test shall be carried out If the hair does not get sucked into the sump the test will be passed With the pump still operating, test the pulling force necessary to free the hair from the device Measure the force to free from the entanglement Repeat the test times for single area as defined before For devices with perforated plates, grilles e.g with larger surface, move the free end of the hair over and against the whole surface Detect if the hair probe gets sucked Brush the hair periodically, to keep tangle free 5.3.4 Evaluation Measuring results of all items which define the test result shall be recorded EXAMPLE — Each single test; — adjustments of pumps; — pump size; — pipe devices Taking into account the weight of the saturated test probe, the device passes the test when on all the tests the traction force is < 15 N Taking into account the weight of the saturated test probe, the device fails the test, when on any one of the tests the traction force is ≥ 15 N NOTE If a device has a design approval, an additional on site test is not required Because pool installation and operation conditions may differ from test conditions, a final on site test is advised 20 BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) Dimensions in millimetres a) Starting position c) b) Direction of hair feed — Attempt to feed hair ends into intake openings Final position — Hold against device Key Suction device Attachment of dynamometer # Water level Rod Hair sample Hair ends Figure $— Stages for hair entrapment test 21 BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) Documentation The manufacturer shall indicate at least the following, if applicable: a) function; b) maximum allowable water flow rate; c) dimension(s) of the attached pipe(s); d) dimensions of the sump; e) structural integrity; f) anti slip rating; g) lifespan 22 BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) Annex A (informative) Obstruction test for floor outlets suction grills A.1 General All the floor water outlets should be tested installed horizontally A.2 Test device #A test device composed of a slab of closed cell elastomeric foam with the following characteristics: — %mechanical strength (60 ± 20) kPa at 50 % — relative distortion under compression in accordance with NF R 99-211;& — density (80 ± 20) kg/m3; — thickness 45 0+2 mm; — shape oval, made by overlapping two disks of radius 95 mm with their centres one radius apart and connecting them by their common tangents (see Figure A.1);$ Dimensions in millimetres Figure A.1 — Shape of the test device — #the mass of the test device shall be (2,8 ± 0,1) kg; the mass of the steel plate below should be adjusted to the mass of the foam slab in order to comply with the total mass value;$ — %a steel plate of the same shape as the slab, with a thickness of about 10 mm; the purpose of this plate is to stiffen the test device and raise its average density so that when the test device is submerged in water it exerts a downward vertical traction force of less than N The steel plate should be fitted with four eyebolts.& 23 BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) Key Rings Foam slab Steel plate Figure A.2 — Test device assembly NOTE A child of years of age is used as a reference for the test assembly in this annex, as this group proved to be statistically one of the more exposed to suction risk The foam slab and the steel plate are bonded permanently together (see Figure A.2) This test device is connected to a dynamometer by four non-elastic 500 mm long ties, and dynamometer is connected to the traction device (see Figure A.3) 24 BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) Key Traction device Test device Effort sensor Figure A.3 — Test rig A.3 Water flow %The test should be carried out in the conditions (e.g flow rate) specified by the manufacturer through the suction device being tested and a pressure drop of at least 90 kPa when the device is obstructed.& A.4 Procedure Install the system in the test pool in normal conditions of use, including the flow rate specified by the manufacturer The suction system should be submerged at a water depth of 75 mm measured vertically upwards from the installation surface of the suction device; position the test device on the suction device with the pump switched off Switch on the pump; and after s exert progressively an upward vertical force up to a maximum value of 300 N and hold it for s 25 BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) A.5 Evaluation The test is passed when under the required load the test device can be detached from the suction system 26 BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) Annex B (informative) Water speed B.1 General Beside the hair entrapment test (see 5.3), the water speed through the open cross section of an outlet grille may be a further criteria to evaluate the safety of the suction fitting In addition to that, the water speed can be a basis for design for construction of the outlet grille NOTE The traction force to release the hair should not be taken as criteria to design an outlet grille The design and evaluation solely based on the water speed is not permitted B.2 Calculation methods For the design or evaluation of new and existing outlet grilles, the average water speed with respect to the open cross section of an outlet grille may be calculated by the following equation: vws = Q A where A is the free opening [cm²], calculated using: A= Q Q ⋅ 1,2 × 10 000 vmax × 600 is the flow rate through the free opening of the grille [m³/h]; (B.1) (B.2) 1,2 is the factor taking into account debris and construction tolerances [-]; vmax is the maximum allowed water speed in the free opening of the grille Values 10 000 and 600 are for conversion [m²] into [cm²] and [1/h] into [1/s] B.3 Test Methods B.3.1 Test equipment For the measurement of water speeds in pipes, inline flow meter or external fitted flow meter (i.e ultrasonic flow measurement) with an accuracy of 0,05 m/s are appropriate Where the measurement of the water speed directly in the openings of the grille is not exactly possible, a statement of the flow patterns and distribution of the water speed over the outlet grill may be achieved with a suitable flow meter with an accuracy of 0,05 m/s or a by a suitable computerised modelling tool 27 BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) B.3.2 Test procedure The measurement of the water speed in the pipes should be conducted at suitable positions – also with respect to the necessary inflow and outflow lengths for the flow meter The measurement of the water speed distribution at the openings of the outlet grille should be carried out on different positions, equally distributed over the outlet grille The flow meter should be placed directly on the surface over a single opening If the suction system is connected to more than one water operated leisure feature, always the combination with the highest flow rate should be tested B.3.3 Analysis All possible equipment which may affect the test results should be recorded, such as: — each pump; — adjustment of each pump; — size of each pump; — specification and dimension of the pipework Furthermore, the test report should contain: — description of the equipment; — adjustment at test procedure; — possible assumptions and correction factors which have been applied for the test B.4 Design stage B.4.1 General The suction fitting has not yet been installed or has been newly designed or is a reconstruction of the previous device B.4.2 Calculation An initial value for the permissible water speed of 0,4 m/s for the calculation of the necessary open cross section of an outlet grille is in the first instance sufficient B.4.3 Measurement The evaluation of the water speed of serial and industrial manufactured suction fittings has to be carried out by the manufacturer or through assigned companies Field fabricated suction fittings or special constructions should be tested on site before commissioning B.5 Suction points in operation B.5.1 General The suction points are technically finished and are in operation during public use 28 BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) B.5.2 Calculation The water speed at a given suction point may be calculated considering the following data/criteria: — manufacturer details of the suction fitting (dimensions, opening areas); — pump characteristics; — operational flow rate at a given pressure; the maximum flow rate has to be taken into consideration Multiple suction points connected to one line of suction require additional measurement to check an equal distribution of the total flow rate to every single point is present Measurement of the water speed at every suction point with a flow meter is advisable B.5.3 Measurement The evaluation of the water speed at already mounted suctions fittings has to be carried out in accordance with B.3 in particular measurement of the water speed in the pipe respectively the flow rate in the pipe 29 BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) Annex C (normative) Entrapment of hair in slits C.1 Testing equipment A hair probe made of 50 g of natural or of a good quality synthetic, both medium to fine, straight, 400 mm in free length Hair probe shall be in good condition, tangle free and the end of single strand may not be jagged One side of hair probe shall be attached to a rod of 25 mm to 30 mm diameter The length of the rod has to be suited to the test situation ≥ 300 mm A dynamometer with an accuracy of 0,5 N to determine the traction force against the entanglement shall be used C.2 Test method Saturate the hair for a minimum of in test water After being saturated, move the free end of the hair over and against the slit protection Repeat this test times In case of slits related to suction points, cover or enclose the main opening to increase the suction effect at the slit Test for the amount of pull necessary to free the hair from the entanglement Measure the force required to free the test probe from the entanglement by pulling the dynamometer and rod vertically Brush hair periodically to keep tangle free C.3 Evaluation Taking into account the weight of the saturated test probe, the protection passes the test when on all the tests the required traction force is < 15 N Taking into account the weight of the saturated test probe, the protection fails the test when on anyone of the tests the required traction force is ≥ 15 N 30 BS EN 13451-3:2011+A3:2016 EN 13451-3:2011+A3:2016 (E) Bibliography [1] #NF R 99-211, Flexible cellular materials — Classification — Symbolisation — Characteristics$ [2] ANSI/NSPI-1 2003, Public Swimming Pools [4] NSF+ANSI+50:2007, Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs [3] ASME A 112.19.17, American Society of Mechanical Engineers – 2002 31 This page deliberately left blank This page deliberately left blank NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British 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