1、BSI Standards PublicationBS EN 1972:2015Diving equipment Snorkels Requirements and testmethodsBS EN 1972:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1972:2015. It supersedes BS 4532:1969 and BS EN 1972:1997 which are withdrawn.The UK participation in it
2、s preparation was entrusted to TechnicalCommittee PH/4/7, Underwater breathing apparatus.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for
3、its correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 85395 1ICS 97.220.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and
4、Strategy Committee on 29 February 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 1972:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1972 December 2015 ICS 97.220.40 Supersedes EN 1972:1997English Version Diving equipment - Snorkels - Requirements and
5、test methods quipement de plonge - Tubas - Exigences et mthodes dessais Tauch-Zubehr - Schnorchel - Sicherheitstechnische Anforderungen und Prfverfahren This European Standard was approved by CEN on 7 November 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stip
6、ulate 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
7、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
8、 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
9、, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any
10、 means reserved worldwide for CEN national Members. Ref. No. EN 1972:2015 EBS EN 1972:2015 EN 1972:2015 (E) 2 Contents PageEuropean foreword . 3 Introduction 4 1 Scope 5 2 Terms and definitions . 5 3 Requirements . 5 3.1 General 5 3.2 Dimensions 5 3.3 Mouthpiece 6 3.4 Resistance to air flow . 6 3.5
11、Joints 6 3.6 Optional devices 6 3.6.1 Snorkel keeping device . 6 3.6.2 Shut-off valves 6 4 Test methods 6 4.1 Visual inspection . 6 4.2 Testing of dimensions . 6 4.3 Resistance to air flow test 7 4.4 Joint strength test 7 4.5 Practical performance test 7 4.5.1 General 7 4.5.2 Test subjects . 7 4.5.3
12、 Basic testing 7 4.5.4 Report 7 5 Marking . 8 6 Information supplied by the manufacturer . 8 BS EN 1972:2015 EN 1972:2015 (E) 3 European foreword This document (EN 1972:2015) has been prepared by Technical Committee CEN/TC 136 “Sports, playground and other recreational facilities and equipment”, the
13、 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 June 2016 and conflicting national standards shall be withdrawn at the latest by June 2016. Attention is drawn
14、 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 supersedes EN 1972:1997. In comparison with the previous edition EN 1972:1997, the followi
15、ng significant changes have been made: a) updating of definition of snorkel and mouthpiece;b) definition of two class A and B for the dimension of snorkel;c) addition of requirements for shut-off valves;d) introduction or updating of new test methods such as visual inspection, tests for dimensions,r
16、esistance to air flow, joint strength and practical performance;e) requirements on marking;f) requirements on information supplied by the manufacturer.According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Europe
17、an Standard: 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, Slove
18、nia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1972:2015 EN 1972:2015 (E) 4 Introduction A snorkel allows the user to breathe, when swimming in a prone position, without having to raise the mouth out of the water. BS EN 1972:2015 EN 1972:2015 (E) 5 1 Scope This European Standa
19、rd specifies safety requirements in order to increase the safety in the use of snorkels for swimmers and divers. This European Standard is applicable to snorkels, which allow users to breathe at the water surface whilst floating with the face submerged. It covers snorkels used by swimmers and divers
20、. This European Standard is not applicable to combined face masks and snorkels, in which the snorkel tube opens into face mask. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 snorkel device composed of a hose and/or tube with a mouthpiece, a
21、llowing a user to breathe while swimming in a prone position; it may also include optional devices such as valves and water deflectors 2.2 mouthpiece part of the snorkel, usually held by the teeth, sealing against the lips and through which air is inhaled and exhaled 3 Requirements 3.1 General The s
22、norkel shall not have any projecting parts, or corners and edges, which can cause injury. Test in accordance with 4.1 and 4.5. 3.2 Dimensions The dimensions of a snorkel shall comply with Table 1. Table 1 Dimensions Class Application Total inner volumeaml max. Lbmm max. A people with large lung capa
23、cities 230 380 B people with small lung capacity (e.g. children) 150 350 aThe total inner volume representing the dead space of the snorkel for respiratory exchange. bLinear distance between the centre of the mouthpiece opening and the lowest part of the air intake opening. Test in accordance with 4
24、.1 and 4.2. BS EN 1972:2015 EN 1972:2015 (E) 6 3.3 Mouthpiece The mouthpiece material shall not be known to be likely to cause irritation or any other adverse effects to health. The mouthpiece shall be designed so that is easily retained in the mouth, e.g. using lug(s) for gripping between the teeth
25、. All parts of the mouthpiece coming in contact with the oral mucosa shall be smoothly finished. The end of the tube shall not extend beyond the mouthpiece into the mouth. Test in accordance with 4.1 and 4.5. 3.4 Resistance to air flow When tested in accordance with 4.3, the peak respiratory pressur
26、e of the snorkel during inhalation and exhalation shall be within the range of 10 mbar. 3.5 Joints When tested in accordance with 4.4 with an axial force of 30 N for 10 s, joints shall show no signs of disengagement. 3.6 Optional devices 3.6.1 Snorkel keeping device Any snorkel keeping device affixe
27、d to the tube to prevent loss of the snorkel in use, shall be arranged in such a way that the position of the snorkel can be adjusted. The snorkel keeping device shall enable the snorkel to be displaced from the mouth and replaced without having to displace the face mask. Test in accordance with 4.1
28、 and 4.5. 3.6.2 Shut-off valves If a shut-off valve to prevent the ingress of water is fitted, it shall only shut off when submerged. After being submerged the valve shall easily open on the first exhalation. Test in accordance with 4.5. 4 Test methods 4.1 Visual inspection Visual inspection shall b
29、e conducted at normal visual acuity. The visual inspection shall include the assessment of the device marking, information supplied by the manufacturer and any safety data sheet. 4.2 Testing of dimensions The inner volume of the snorkel may be determined either by dimensional measurement and calcula
30、tion or by filling the snorkel with water. Put the snorkel with its mouthpiece in a position that it would be during normal use. BS EN 1972:2015 EN 1972:2015 (E) 7 Determine the linear distance L between the centre of the mouthpiece opening and the lowest part of the air intake opening. 4.3 Resistan
31、ce to air flow test Connect the mouthpiece to a breathing simulator. Set the breathing simulator to a sinusoidal operation of 25 strokes/min with 2,5 l/stroke at ambient pressure and temperature. The deviation between frequency and amplitude shall not be more than 3 %. Take the pressure recording at
32、 the mouthpiece. Continue the measurement until steady-state is achieved. 4.4 Joint strength test A tensile testing machine or a dead weight arrangement with means for measuring with accuracy of 2 N over the whole measuring range shall be used. Apply a load of (30 2) N across the joint at a uniform
33、rate over 5 s. Maintain the force for 10 s and examine the joint for any damage. 4.5 Practical performance test 4.5.1 General For reasons of safety, practical performance tests should be carried out only after all laboratory tests, according to 4.1 to 4.4, have been satisfactorily completed. 4.5.2 T
34、est subjects The snorkel shall be tested by subjects who are practicing regularly with snorkels. 4.5.3 Basic testing Each test subject shall make a test swim which include at least two submersions to a depth of at least 1 m. During the test the snorkel will be subjectively assessed by the user and t
35、he users comments on the following points shall be recorded after the test: a) snorkel comfort;b) security of any joints and attachments;c) adjustment of the mouthpiece and any snorkel keeping device;d) ease of breathing and of opening of any shut-off valve on the first exhalation;e) any other comme
36、nts reported by the user on request.4.5.4 Report A record with a final report of the tests performed with the test persons shall be kept. BS EN 1972:2015 EN 1972:2015 (E) 8 5 Marking Each snorkel shall be marked with the following information: a) the name, trademark or other means of identification
37、of the manufacturer;b) the number of this European Standard, EN 1972;c) class designation;d) type designation.6 Information supplied by the manufacturer Instructions showing at least the following information shall be: a) how to use the snorkel, e.g. use the snorkel only in water;b) indication of po
38、ssible misuse, e.g. warning that there are two classes of snorkels for users ofdifferent lung capacities;c) instructions concerning maintenance and storage.This page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications,
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