1、BS 7971-5:2016Protective clothing andequipment for use in violentsituations and in trainingPart 5: Footwear Requirementsand test methodsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Publishing and copyright informationThe BSI copyright notice displayed in this docu
2、ment indicates when the documentwas last issued. The British Standards Institution 2016Published by BSI Standards Limited 2016ISBN 978 0 580 75837 9ICS 13.340.10The following BSI references relate to the work on this document:Committee reference PH/3/12Draft for comment 16/30280808 DCPublication his
3、toryBS 7971-5 first published September 2004BS 7971-11 first published August 2006First published together as BS 7971-5 August 2016Amendments issued since publicationDate Text affectedBS 7971-5:2016 BRITISH STANDARDContentsForeword iiIntroduction 11 Scope 12 Normative references 13 Terms and definit
4、ions 24 Requirements 25 Test methods and method guidance 56 Marking 77 Manufacturers information to user 8Bibliography 10List of figuresFigure 1 Outsole dimensions 4Figure 2 Radiant heat test area 4Figure 3 Minimum length of metatarsal protection 5List of tablesTable 1 Additional requirements from B
5、S EN ISO 20345 2Table 2 Additional requirements footwear 3Summary of pagesThis document comprises a front cover, an inside front cover, pages i to ii,pages 1 to 10, an inside back cover and a back cover.BRITISH STANDARD BS 7971-5:2016 The British Standards Institution 2016 iForewordPublishing inform
6、ationThis part of BS 7971 is published by BSI Standards Limited, under licence fromThe British Standards Institution, and came into effect on 31 August 2016. It wasprepared by Subcommittee PH/3/12, Protective clothing and equipment for usein violent situations and training under the authority of Tec
7、hnical CommitteePH/3, Protective clothing. A list of organizations represented on this committeecan be obtained on request to its secretary.SupersessionThis part of BS 7971 supersedes BS 7971-5:2004, which is withdrawn, and partlysupersedes BS 7971-11:2006.Information about this documentThis part of
8、 BS 7971 has been substantially revised in association with the HomeOffice. The aims of the revision were to amalgamate appropriate content fromBS 7971-1, BS 7971-2, BS 7971-5 and BS 7971-11 and to reference the HomeOffice publication, Blunt trauma protector standard for UK police (2007) N1.This Bri
9、tish Standard contains public sector information licensed under the OpenGovernment Licence v2.0.This full revision of the standard introduces the following principal changes byaddition of clauses covering: innocuousness; sizing; marking; user information; modified resistance to chemicals; testing fo
10、r flame spread; and integral metatarsal protection.Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Itsrequirements are expressed in sentences in which the principal auxiliary verb is“shall”.Commentary, explanation and general informative material
11、 is presented insmaller italic type, and does not constitute a normative element.Contractual and legal considerationsThis publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application.Compliance with a British Standard cannot con
12、fer immunity from legalobligations.Attention is drawn to Regulation (EU) 2016/4251)1.1)Regulation (EU) 2016/425 replaces Directive 89/686/EEC, which remains in use untilApril 2018.BRITISH STANDARDBS 7971-5:2016ii The British Standards Institution 2016IntroductionFootwear used in specialist operation
13、al situations and in training is intended toreduce the risk of injury to the user, who might be faced with threats such asimpact, heat, flame and the effects of certain liquids, which in somecircumstances could also be burning liquids.In the period of time since the initial publication of the BS 797
14、1 suite ofstandards, products in general use have evolved to reflect the changing threatand operational needs of the user, including the need for protection from morepenetrative chemical threats. In the selection of suitable footwear, optimumprotection has to be balanced with operational requirement
15、s in an environmentwhere the option of increasing protection levels as a threat escalates might notbe viable.Consideration has been made for new advances in technology identified at thetime of revision, particularly in the area of metatarsal protection.Operational requirements were taken into accoun
16、t during the preparation ofthis revision.Principal changes between this and the previous edition are outlined in theForeword.1 ScopeThis part of BS 7971 specifies requirements and test methods for footwear,which is to be used predominantly but not exclusively by police and prisonofficers in speciali
17、st operational situations and in training and by others whomight be exposed to attack and assault in the course of their duties.NOTE 1 Civilian groups working alongside police or prison services in specialistoperational situations might find by risk assessment that this British Standard offersadditi
18、onal protection for such activities and threats not within the scope of otherstandards.NOTE 2 This British Standard does not cover external, over-the-boot metatarsalprotection which is intended to be considered in the next revision of BS 7971-4.2 Normative referencesThe following documents, in whole
19、 or in part, are normatively referenced in thisdocument and are indispensable for its application. For dated references, onlythe edition cited applies. For undated references, the latest edition of thereferenced document (including any amendments) applies.Standards publicationsBS 5131-5.13:1980, Met
20、hods of test for footwear and footwear materials Part 5: Testing of complete footwear Section 5.13: Measurement of thestrength of stitched seams in upper and lining materialsBS EN ISO 6942:2002, Protective clothing Protection against heat and fire Method of test: Evaluation of materials and material
21、 assemblies when exposedto a source of radiant heatBS EN ISO 13997, Protective clothing Mechanical properties Determination ofresistance to cutting by sharp objectsBS EN ISO 20345, Personal protective equipment Safety footwearBRITISH STANDARD BS 7971-5:2016 The British Standards Institution 2016 1Ot
22、her publicationsN1HOME OFFICE SCIENTIFIC DEVELOPMENT BRANCH. HOSDB Blunt traumaprotector standard for UK police (2007). Publication No. 20/07. St Albans:Home Office, 2007.2)3 Terms and definitionsFor the purposes of this part of BS 7971, the terms and definitions given inBS EN ISO 20345 and the foll
23、owing apply.3.1 integral metatarsal protectorpermanent, non-removable part of the boot providing protection to themetatarsal area4 Requirements4.1 Requirements based on BS EN ISO 203454.1.1 GeneralFootwear shall conform to all the basic requirements of BS EN ISO 20345 for aclassification 1 product.
24、In addition it shall meet the following additionalrequirements of BS EN ISO 20345 as detailed in Table 1.Table 1 Additional requirements from BS EN ISO 20345Requirement SymbolWhole footwearUpper height Design C or D Penetration resistance PElectrical properties antistatic AResistance to inimical env
25、ironments heat insulation HIResistance to inimical environments cold insulation CIEnergy absorption of the seat region EWater resistance (dynamic machine method) WRAnkle protection ANResistance to hot contact HROOutsole Resistance to fuel oil FOCleated outsole 4.1.2 InnocuousnessThe manufacturer sha
26、ll ensure, by testing or by declaration, that the materialsor their derivatives shall not be known to harm the user, i.e. that they shall notbe known to contain any toxic, carcinogenic, allergenic or otherwise harmfulsubstances that could be released under foreseeable conditions of use.2)Available f
27、romlast viewed8 August 2016.BRITISH STANDARDBS 7971-5:20162 The British Standards Institution 20164.2 Additional requirementsIn addition to meeting the requirements of BS EN ISO 20345 as detailed inClause 4 of this British Standard, footwear shall meet the requirements specifiedin Table 2.Table 2 Ad
28、ditional requirements footwearProperty Test method RequirementMaximum width of outsole Visual inspection andmeasurementWidth of size 8 at widest point:115 mmHeel breast on outsole Visual inspection andmeasurement (see Figure 1)Dimension a 35 mmDimension b 10 mmAngle 90 120Tongue Visual inspection an
29、dmeasurementInternal or external bellows extendingto at least half the height of the upperas measured from the featherline.Seam strength of structuralseams in stitched footwearBS 5131-5.13:1980 Seam strength 15 N/mmChemical resistance of theupper5.1 usinga) 50% ISO-octane/50%toluene (petrol substitu
30、te);b) Methyl Isobutyl Ketone(AR grade);c) 50% ethanol/50% water;d) 30% aqueous sulfuric acid;ande) 40% aqueous sodiumhydroxide.There shall be no penetration of liquidthrough the structure of the bootafter 10 min 30 s and no more thanslight visible damage to the surface,fittings or structure of the
31、bootafter1h2min.Radiant heat BS EN ISO 6942:2002,Method B at a heat fluxdensity of 20 kW/m2Test samples to be cut fromarea 1 shown in Figure 2.RHTI 24 (i.e. Radiant Heat TransferIndex as defined inBS EN ISO 6942:2002) 13 s.Additional ergonomics running5.2 At least two of the three wearers to beable
32、to complete all actions withoutdiscomfort and without the fasteningsystem loosening to the point that thefootwear was coming off.Burning behaviour 5.3 Total burn time of main boot (i.e.excluding laces) 120 s.Footwear to remain intact (i.e. noholing through full thickness of upper,seams to remain int
33、act). No signs ofthermal damage (such as charring ormelting) on inner surface of boot.Cut resistance BS EN ISO 13997 Minimum cutting force 15 N whentested on the area defined in Figure 2.BRITISH STANDARD BS 7971-5:2016 The British Standards Institution 2016 3Figure 1 Outsole dimensionsKeya Waist hei
34、ght Heel breast angleb Heel breast heightFigure 2 Radiant heat test areaKey1 Protective area a Overlap of 10 mm over toecap2 Rear edge of toecap b Minimum height of 30 mm above the feather line4.3 Optional requirementsIntegral metatarsal protectors shall meet the transmitted force requirementsspecif
35、ied in Blunt trauma protector standard for UK police (2007) N1. Theyshall be tested within the “as worn” structure of the boot, using the ambientpreconditioning only and an impact energy of 15 0.5 J and shall have aminimum length of protection as shown in Figure 3.NOTE It has been found that the bes
36、t methodology for sample preparation is forthe upper of the boot to be fastened as intended to be worn and then cut from itssole and opened down the back seam area to allow it to be placed across the anvilfor testing.BRITISH STANDARDBS 7971-5:20164 The British Standards Institution 2016Figure 3 Mini
37、mum length of metatarsal protectionDimensions in millimetresKey1 Minimum length of integratedmetatarsal protection3 Starting point of protection within 5 mm of endof toe cap2 Length of boot 4 Minimum end point of protection greaterthan 50% of length of boot5 Test methods and method guidance5.1 Chemi
38、cal resistance testing5.1.1 PrincipleWhole boot samples are exposed for a short period of time to a limited volumeof specific liquids which might be encountered in operational use.Damage to the materials and structure of the boot including ingress throughseams and manufactured structure is assessed
39、following a short and thenextended period.5.1.2 MethodA single boot sample shall be evaluated per chemical to be applied.a) Clean the boot with a dry absorbent paper to remove any residue ormanufacturing finishes.b) Store the boot for at least 24 h in an environment at 20 2 Cand 65 5% rh.c) Fasten t
40、he boot.d) Fill the boot with absorbent paper as a trace medium for liquid ingress.Ensure the paper is in contact with the seams of the boot at the front,bellows and lacing in particular.e) Prepare a minimum of 70 ml of each of the following test liquids:1) 50% ISO-octane/50% toluene (petrol substit
41、ute);2) Methyl Isobutyl Ketone (AR grade);BRITISH STANDARD BS 7971-5:2016 The British Standards Institution 2016 53) 50% ethanol/50% water;4) 30% aqueous sulfuric acid; and5) 40% aqueous sodium hydroxide.f) Place the boot into a metal tray of a sufficient size to allow residual liquidto drain from a
42、round the boot during application. Use a new boot for eachtest.g) Lightly mark the sides and tongue area of the test sample with a horizontalline approximately 5 mm below the top of the bellows of the tongue.NOTE 1 This is to allow accurate application of the test solution in a positionbelow the bel
43、lows of the tongue (a waxed pencil or chalk have been found tobe suitable) and to minimize any incidence of accidental spillage duringapplication into the inner of the boot.h) Pour 60 6 ml of test liquid evenly across the two sides and front of theboot and leave any spilled volume in the tray in con
44、tact with the sole untilthe first examination is completed. It is useful to have the boot at an angleof approximately 45 when pouring chemicals onto the side sections.NOTE 2 It has been found that using smaller containers each holding 20 2 mlof the test liquid per side and across the centre front ma
45、kes application moreconsistent.i) Leave the samples for a period of 10 min 30 s prior to removal from thetray and assess any initial damage.j) Remove the absorbent paper from inside the boot and, if any liquidpenetration is visible as damp patches, note the location of ingress andmake a comment on t
46、he severity of ingress (none/slight/moderate/severe).k) 1 h 2 min after pouring the chemical, carry out a visual inspection of theboot, comparing it to an original (or photographs) and note any damage orvisual change (for example, surface marking or damage, damage tocomponents, lack of functionality
47、). Check the area under any lacing orfastenings where spilt liquid might be trapped and not easily visible.NOTE 3 The test sample should be cut open to assess any internal damage.5.2 Method for determination of ergonomic penalty duringwalking/runningThree sizes of footwear shall be tested, one from
48、towards the upper end of thesize range, one from the lower end of the size range and one from the middleof the size range. The three wearers, who shall have feet of a size suitable forthe test footwear and shall be physically fit enough to run 100 m in footwear oftheir own choice shall attempt the b
49、elow actions a) to b) while wearing the testfootwear. If the footwear is intended for both male and female wearers at leastone wearer shall be male and one shall be female.NOTE If considered necessary (e.g. as recommended by the manufacturer), abreak-in wear period and the use of thick socks is permitted.Actions:a) Walk for 100 m and then run at a steady pace for 100 m.b) Move rapidly up a typical 1012 rise of stairs and then walk down the stairs.A record shall be made as to whether
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