BS 7971-11-2006 Protective clothing and equipment for use in violent situations and in training - Foot and ankle protectors and foot protectors - Requirements and test methods《在极端场.pdf

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1、BS 7971-11:2006Protective clothing and equipment for use in violent situations and in training Part 11: Foot and ankle protectors and foot protectors Requirements and test methodsICS 13.340.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDPublishing and copyrig

2、ht informationThe BSI copyright notice displayed in this document indicates when the document was last issued. BSI 2006ISBN 0 580 48937 XThe following BSI references relate to the work on this standard:Committee reference PH/3/12Draft for comment 06/30122877 DCPublication historyFirst published Augu

3、st 2006Amendments issued since publicationAmd. no. Date Text affectedBS 7971-11:2006 BSI 2006 iBS 7971-11:2006ContentsForeword iiiIntroduction 11 Scope 22 Normative references 23 Terms and definitions 24 Performance levels 25 Construction and performance requirements 36 Test methods 7AnnexesAnnex A

4、(informative) Information and guidance on use of foot and ankle protectors and foot protectors 15Bibliography 16List of figuresFigure 1 Zones of protection 5Figure 2 Attachment points on protectors, and directions of force application, for restraint testing 10Figure 3 Dimensions of cylindrical anvil

5、s 12List of tablesTable 1 Test conditions for blunt impact and blade impact testing 6Summary of pagesThis document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 16, an inside back cover and a back cover.BS 7971-11:2006ii BSI 2006 This page deliberately left blank BSI 2006

6、 iiiBS 7971-11:2006ForewordPublishing informationThis part of BS 7971 was published by BSI and came into effect on 31 August 2006. It was prepared by Subcommittee PH/3/12, Protective clothing and equipment for use in violent situations, under the authority of Technical Committee PH/3, Protective clo

7、thing. A list of organizations represented on this committee can be obtained on request to its secretary.Information about this documentThe following parts of BS 7971 are currently published or in preparation: Part 1: General requirements; Part 2: Guidance on risk assessment and on the selection, us

8、e, cleaning and maintenance of protective clothing and equipment; Part 3: Personal defence shields Requirements and test methods; Part 4: Limb protectors Requirements and test methods; Part 5: Footwear Requirements and test methods; Part 6: Gloves for protection against mechanical, thermal and chemi

9、cal hazards Requirements and test methods; Part 7: Slash-resistant gloves Requirements and test methods; Part 8: Blunt trauma torso, shoulder, abdomen and genital protectors Requirements and test methods; Part 9: Training suits and equipment Requirements and test methods; Part 10: Coveralls Requirem

10、ents and test methods; Part 11: Foot and ankle protectors and foot protectors Requirements and test methods.Product certification/inspection/testing. Users of this British Standard are advised to consider the desirability of third-party certification/inspection/testing of product conformity with the

11、 relevant parts of BS 7971. Appropriate conformity attestation arrangements are described in BS EN ISO/IEC 17025. Users seeking assistance in identifying appropriate conformity assessment bodies or schemes may ask BSI to forward their enquiries to the relevant association.Hazard warningsWARNING. Thi

12、s British Standard calls for the use of procedures that can be injurious to health if adequate precautions are not taken. It refers only to technical suitability and does not absolve the user from legal obligations relating to health and safety at any stage.BS 7971-11:2006iv BSI 2006Use of this docu

13、mentIt has been assumed in the preparation of this British Standard that the execution of its provisions will be entrusted to appropriately qualified and experienced people, for whose use it has been produced.Presentational conventionsThe provisions of this standard are presented in roman (i.e. upri

14、ght) type. Its requirements are expressed in sentences in which the principal auxiliary verb is “shall”.Commentary, explanation and general informative material is presented in smaller italic type, and does not constitute a normative element.Contractual and legal considerationsThis publication does

15、not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations. BSI 2006 1BS 7971-11:2006IntroductionFoot and ankle protectors and foot protectors are items of prote

16、ctive clothing which are generally, but not exclusively, worn by serving police officers and prison officers whilst they are engaged in operational duties and in training. They are also used by civilians engaged in activities where the risks of attack and assault are similar e.g. private security pe

17、rsonnel, bullion handlers, escorts and couriers.Foot and ankle protectors and foot protectors are intended to reduce the severity of, or prevent, soft tissue injuries resulting from blunt trauma to specific areas of the feet, or the feet and ankles, of the wearer. Such blunt trauma can arise as the

18、result of impact from airborne missiles (house bricks, assorted types of bottle, metal bars, pieces of timber, fragments of wood, broken glass and slates, etc.).Foot and ankle protectors and foot protectors are not intended to provide ballistic protection or protection against sharp or pointed instr

19、uments (e.g. axes, spikes and knives).Foot and ankle protectors and foot protectors can be separate items, or can be an additional component of the knee and shin protectors specified in BS 7971-4. They can be manufactured from, or encapsulated within, flame retardant materials.For certain user group

20、s including police and prison officers, foot and ankle protectors or foot protectors might constitute a second line of defence, where a personal defence shield, particularly a full-length shield, provides a degree of primary protection (see BS 7971-3). Whilst shields do not always prevent impacts wi

21、th the wearers feet and ankles by missiles or weapons, they can reduce the energy of impacts to levels at which foot and ankle protectors or foot protectors can have a significant effect in the reduction of soft tissue or skeletal injuries. Foot and ankle protectors and foot protectors of one perfor

22、mance level are specified.The test methods specified in this part of BS 7971 have been selected to measure the performance of foot and ankle protectors and foot protectors with respect to the protection they can be expected to provide against the commonly faced hazards listed above. The severity of

23、these tests cannot compare directly with the conditions to which police officers, prison officers and others can be exposed in real life situations, where different hazards can be encountered. However, experience has shown that foot and ankle protectors and foot protectors which pass such tests can

24、significantly reduce the incidence and/or severity of injuries.BS 7971-11:20062 BSI 20061 ScopeThis part of BS 7971 specifies performance requirements and test methods for foot and ankle protectors and foot protectors to provide protection against blunt trauma, for use by police and prison officers

25、and others who might be exposed to attack and assault in the course of their duties, for use in operational situations and in training.NOTE 1 Information and guidance on the use of foot and ankle protectors and foot protectors is given in Annex A. NOTE 2 Guidance on risk assessment and the selection

26、, care and maintenance of protective clothing and equipment for use in violent situations and in training is given in BS 7971-2.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For u

27、ndated references, the latest edition of the referenced document (including amendments) applies. BS 7971-1, Protective clothing and equipment for use in violent situations and in training Part 1: General requirementsBS 7971-4:2002, Protective clothing and equipment for use in violent situations and

28、in training Part 4: Limb protectors Requirements and test methodsBS 7971-8:2003, Protective clothing and equipment for use in violent situations and in training Part 8: Blunt trauma torso, shoulder, abdomen and genital protectors Requirements and test methodsBS EN ISO 15025:2002, Protective clothing

29、 Protection against heat and flame Method of test for limited flame spread3 Terms and definitionsFor the purposes of this part of BS 7971 the terms and definitions given in BS 7971-1 apply.4 Performance levelsFoot and ankle protectors and foot protectors shall each be of a single type which shall be

30、 performance level 3 as specified in BS 7971-1. BSI 2006 3BS 7971-11:20065 Construction and performance requirements5.1 General Foot and ankle protectors and foot protectors shall conform to the general requirements for protective clothing and equipment for use in violent situations and in training

31、specified in BS 7971-1, as applicable.5.2 SizingFoot and ankle protectors and foot protectors shall be marked with a size designation. The size shall be related to the size and model of the footwear with which the protectors are intended to be worn (see 5.3), and the relationship shall be explained

32、in the information supplied by the manufacturer as specified in BS 7971-1 (see also 5.9).5.3 Dimensions of zones of protection and test areas for impact testingThe zone of protection shall be such that the following requirements are met, as illustrated in Figure 1a) and Figure 1b). If protection is

33、achieved through the use of various layers of materials, the zone of protection shall be where all layers are present.a) For foot protectors and foot and ankle protectors, at the front of the protector, the zone of protection shall overlap the rear edge of the safety toecap of the footwear by not le

34、ss than 15 mm and not more than 30 mm. (Dimension a in Figure 1.)b) At the rear of the heel there shall be no gap between the edges of the zone of protection of the foot and ankle protector that exceeds 80 mm, or of the foot protector that exceeds a value in centimetres equivalent to twice the UK fo

35、otwear size (e.g. for UK size 9 footwear the maximum distance would be 18 cm). (Dimension b in Figure 1.)c) For foot protectors and foot and ankle protectors, along its inner and outer lower edges the protector shall be not less than 15 mm from the ground (dimension c1in Figure 1) and not more than

36、15 mm above the nearest part of the upper surface of the permanent insole of the footwear. (Dimension c2in Figure 1.)d) For foot protectors and for foot and ankle protectors, the zone of protection shall be continuous from the toecap of the footwear to at least a point on the instep at which a point

37、er placed at 45 to the vertical would be normal to the surface of the instep of the footwear. (Dimension d in Figure 1.)e) For foot protectors and foot and ankle protectors, any horizontal gap between the protector and the instep of the footwear, measured along the centre-line of the footwear, shall

38、 be not more than 10 mm. (Dimension e in Figure 1.)BS 7971-11:20064 BSI 2006f) For foot and ankle protectors, the ankle zone of protection shall extend to a point which is at a distance in centimetres above the level of the upper surface of the permanent insole of the footwear at the heel equivalent

39、 to the UK footwear size. Dimension f1in Figure 1a). The top contour of the ankle zone of protection shall have a radius in centimetres equivalent to not less than one quarter of the UK footwear size. Dimension f2in Figure 1a).g) For foot protectors and foot and ankle protectors, the lowest point of

40、 the top edge of the zone of protection between the ankle and the instep shall be at a distance in centimetres above the level of the upper surface of the permanent insole of the footwear at the heel equivalent to not less than 80% of the UK footwear size. (Dimension g in Figure 1.)The test area sha

41、ll be the same size as the zone of protection.Marking of the outline of the zone of protection prior to impact testing shall be carried out in accordance with 6.3.5.4 RestraintWhen tested in accordance with 6.4.1 and 6.4.2 each protector shall not be displaced from the foot and ankle, or the foot, o

42、f the test subject, as applicable, by more than 20% of its longitudinal dimension or more than 20% of its lateral dimension. In addition, when tested in accordance with 6.4.1 and 6.4.3 the front edge of the protector shall not be pulled upwards by more than 50 mm.5.5 Ergonomic performance and compat

43、ibilityWhen tested in accordance with BS 7971-1, using the test conditions specified for footwear, foot and ankle protectors and foot protectors shall have a test score equal to or less than 1. BSI 2006 5BS 7971-11:2006Figure 1 Zones of protectiona) Foot and ankle protectorb) Foot protectorKey1 Leve

44、l of upper surface of permanent insole of footwear2 Foot area of zone of protection of foot and ankle protector3 Ankle area of zone of protection of foot and ankle protector4 Zone of protection of foot protector123deafgb1c2f2c1b14deagbc2c1bBS 7971-11:20066 BSI 20065.6 Impact resistance5.6.1 Blunt im

45、pact resistanceWhen the protector is tested in accordance with 6.5 using the relevant anvil type and impact energy specified in Table 1, the mean peak transmitted force from all impacts in the test area shall not exceed 2 kN and no single value shall exceed 3 kN.5.6.2 Blade impact resistanceWhen the

46、 protector is tested in accordance with 6.5 using the relevant anvil type and the impact energy specified in Table 1, the blade impactor shall not cut through the inner surface of the protector at any point in the zone of protection.5.7 Burning behaviourWhen tested in accordance with 6.6, each test

47、specimen shall meet the following requirements.a) The afterflame time shall be 2 s.b) The afterglow time shall be 2 s. c) There shall be no hole formation through the full thickness of the test specimen. d) There shall be no flaming or molten debris from the test specimen.5.8 MarkingProtectors shall

48、 be marked in accordance with BS 7971-1. The marking shall remain legible after the washing or cleaning process in accordance with 6.1.2.Table 1 Test conditions for blunt impact and blade impact testingType of protectorTest area Anvil type Impact energyJFoot and ankleFoot area of zone of protection

49、as shown in Figure 1a)Domed cylinder 100 mm radius of curvature (6.5.2.5)20Ankle area of zone of protection as shown in Figure 1a)Domed cylinder 25 mm radius of curvature (6.5.2.5)15Foot Zone of protection as shown in Figure 1b)Domed cylinder 100 mm radius of curvature (6.5.2.5)20 BSI 2006 7BS 7971-11:20065.9 Information to be supplied by the manufacturerIn addition to the information and instructions specified in BS 7971-1, protectors shall be supplied with the following