1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI British StandardsWB9423_BSI_StandardColCov_noK_AW:BSI FRONT COVERS 5/9/08 12:55 Page 1Head and face protection for cricketers Part 2: Face protectors for cricket wicket-keepersBS 7928-2:2009BS 7928-2
2、:2009 BRITISH STANDARDPublishing and copyright infornullationThe BSI copyright notice displayed in this docnullnullent indicates nullhen the docnullnullent nullas last issnullednullnull BSI 2009ISBN 978 0 null80 null7nullnullnull 7InullS 97null220nullnull0The nullollonulling BSI renullerences relate
3、 to the nullornull on this standard: nullonullnullittee renullerence nullHnullnullnullnull Dranullt nullor conullnullent 09nullnull0200null8null DnullPublication historynullirst pnullnulllished Decenullnuller 2009nullnullendnullents issued since publicationnullate nullenullt affected BRITISH STANDAR
4、Dnull BSI 2009 null iBS 7928-2:2009nullontentsnullorenullord ii0 Introdnullction 1null Scope 12 Nornullatinulle renullerences 1null Ternulls and denullnitions 2null nullaterials 3null nullonstrnullction 3null Inullpact attennullation 57 Testing 58 nullarnulling 59 Innullornullation to nulle snullppl
5、ied nully the nullannullnullactnullrer 6nullnnenullesAnnenull A nullnornullatinullenull Inullpact attennullation test 8Binullliography 12nullist of nullguresnullignullre null null Denullnition onull nullace protector areas onull conullerage 4nullignullre Anullnull null Apparatnulls nullor deternulli
6、ning inullpact attennullation 9nullist of tablesTanullle Anullnull null Inullpact nullelocity nullor inullpact attennullation test 11Sunullnullary of pagesThis docnullnullent conullprises a nullront conullernull an inside nullront conullernull pages i to iinull pages null to null2null an inside null
7、acnull conuller and a nullacnull conullernullBS 7928-2:2009ii null null BSI 2009BRITISH STANDARDnullorenullordPublishing infornullationThis part onull BS 7928 is pnullnulllished nully BSI and canulle into enullnullect on nullnull Decenullnuller 2009null It nullas prepared nully Snullnullconullnullit
8、tee nullHnullnullnullnullnull Protective helmets for sport and leisure activitiesnull nullnder the anullthority onull Technical nullonullnullittee nullHnullnullnull Head protectionnull A list onull organinullations represented on this conullnullittee can nulle onulltained on renullnullest to its sec
9、retarynullnullelationship nullith other publicationsThis pnullnulllication is related to BS 7928null Specification for head protectors for cricketersnull nullhich nullill nulleconulle BS 7928-null in dnulle conullrsenullPresentational connullentionsThe pronullisions onull this standard are presented
10、 in ronullan nullinullenull nullprightnulltypenull Its renullnullirenullents are enullpressed in sentences in nullhich the principal anullnulliliary nullernull is nullshallnullnullCommentarnullnull enullplanation and nulleneral informative material is presented in smaller italic tnullpenull and does
11、 not constitute a normative elementnullnullontractual and legal considerationsThis pnullnulllication does not pnullrport to inclnullde all the necessary pronullisions onull a contractnull nullsers are responsinullle nullor its correct applicationnullnullonullpliance nullith a British Standard cannot
12、 confer inullnullunity fronulllegal obligationsnullBRITISH STANDARDnull BSI 2009 null nullBS 7928-2:20090 nullntroductionIt is inullportant to note that the protection ginullen nully a nullace protector depends on the circnullnullstances onull the accident and nullearing a nullace protector cannot a
13、lnullays prenullent death or long-ternull disanullilitynullA proportion onull the energy onull an inullpact is anullsornulled nully the nullace protectornull therenully rednullcing the nullorce onull the nulllonull snullstained nully the nullacenullheadnull The strnullctnullre onull the nullace prot
14、ector nullight nulle danullaged in anullsornulling this energy and any nullace protector that snullstains a senullere nulllonull needs to nulle replaced enullen inull danullage is not apparentnullIn preparing this standard the conullnullittee has nulleen anullare that no test enullists nullor nullea
15、snullrenullent onull inullpact attennullation that sinullnulllates the inullpact onull a nullonulling cricnullet nullall on a conullparatinullely static player nullearing a nullace protectornull The test nullethod specinulled records the inullpact onull a nullonulling headnullornull nulltted nullith
16、 a nullace protector on a henullispherical nullsinullnulllated cricnullet nullall shapenull annullilnull nullhich is the nearest appronullinullation to nullse anullong enullisting test nullethodsnullA nullnull null inullpact nullas chosen nullor the inullpact attennullation test nullecanullse:anull
17、it is theoretically enullnullinullalent to a cricnullet nullall speed onull 2null nullnulls to null0 nullnullsnullnullnull this inullpact enanullled a distinction to nulle nullade nulletnulleen the protection lenullels onullnullered nully cricnullet helnullets cnullrrently nullannullnullactnullred t
18、o BS 7928nullnullnullnullnull nullt is anticipated that the 15 null impact nullill nulle amended in future revisions of this standard as the technolonullnull for measurinnull cricket nullall speeds improvesnull enanulllinnull more detailed data to nulle collectednullnull ScopeThis part onull BS 7928
19、 specinulles renullnullirenullents nullor nullace protectors to nulle nullorn nully cricnullet nullicnullet-nulleepersnullIt inclnulldes renullnullirenullents relating to:anull nullaterials and constrnullctionnullnullnull inullpact attennullation propertiesnullcnull nullarnullingnull and dnull innul
20、lornullation to nulle snullpplied nullith the nullace protectornullnullnullnullnull nullor renulluirements relatinnull to helmets and facenulluardsnull inullenull head protectorsnull see nullS null928null2 nullornullatinulle referencesThe nullollonulling renullerenced docnullnullents are indispensan
21、ullle nullor the application onull this docnullnullentnull nullor dated renullerencesnull only the edition cited appliesnull nullor nullndated renullerencesnull the latest edition onull the renullerenced docnullnullent nullinclnullding any anullendnullentsnull appliesnullBS nullN 9null0:200nullnull
22、Specification for headforms for use in the testinnull of protective helmetsBS ISnull nullnull87:2002nullAnull:2008null nulload vehicles null nulleasurement techninullues in impact tests null nullnstrumentationBS 7928-2:20092 null null BSI 2009BRITISH STANDARDnull nullernulls and denullnitionsnullor
23、the pnullrposes onull this part onull BS 7928null the ternulls and denullnitions ginullen in BS nullN 9null0 and the nullollonulling applynullnullnullnull head protectorconullplete assenullnullly onull helnullet and nullacegnullardnullnull2 helnulletheadgear nullade onull shocnull-resistant nullater
24、ial intended to protect parts onull the nullearernulls head against a specinulled hanullard nullcricnullet nullallnullnullBS ISnull null007 nullnullodinullednullnullnullnullnull faceguardenulltension onullnull or an attachnullent tonull the helnullet conullering the nullace and earsnull to ginulle p
25、rotection against inullpactsnullnullnull face protectorheadgear prinullarily intended to protect parts onull the nullearernulls nullacenullinclnullding chinnull lonuller nullanullnull nullorehead and tenullplesnull against a specinulled hanullard nullcricnullet nullallnullnullnullnull protectinulle
26、paddingnullaterial nullsed to anullsornull inullpact energynullnullnull retention systenullconullplete assenullnullly that prenullents inadnullertent loss onull the nullace protectornullnullnullnull nullhe retention snullstem minullht comprisenull for enullamplenull a chin strap and head strapnullsn
27、ullnullnullandnullsnullnullnullnull7 chin strapstrap that passes nullnder the nullearernulls chin or lonuller nullanull and intended to prenullent inadnullertent loss onull the nullace protectornullnull8 head strapnullbandstrapnullnulland that passes aronullnd the rear part onull the nullearernulls
28、head intended to prenullent inadnullertent loss onull the nullace protectornullnull9 basic plane nullonull a hnullnullan headnull plane at the lenullel onull the enullternal anullditory nulleatnulls nullenullternal ear openingnull and the innullerior nullargin onull the ornullit nulllonuller edge on
29、ull the eye socnulletnullnullnullnull0 basic plane nullonull a headnullornullnull plane relatinulle to the headnullornull that corresponds to the nullasic plane onull the head that the headnullornull sinullnulllatesnullnullnullnull null precise position for the nullasic plane of a headform conformin
30、nullto nullS nullnull 96null is nulliven in that standardnullnullnullnullnull central nullertical anullisline relatinulle to a headnullornull connullornulling to BS nullN 9null0 that lies in the plane onull synullnulletry and nornullal to the renullerence plane at a point enullnullidistant nullronul
31、l the nullront and nullacnull onull the headnullornull in the renullerence planenullnullnull2 central longitudinal nullertical planenullertical plane onull the synullnulletry onull a hnullnullan head or headnullornull or onull a nullace protector as it is intended to nulle nullorn on the headnullnul
32、lnullnull sinulle nullof a face protectornullsinulle onull the head nullhich the inner parts and retention systenull onull the nullace protector are designed to nulltBRITISH STANDARDnull BSI 2009 null nullBS 7928-2:2009nullnullnullnull positioning indenulldinullension estanulllished nully the nullan
33、nullnullactnullrer that denullnes the position in nullhich the helnullet is intended to nulle placed on the appropriate headnullornull nullor testing pnullrposesnullnullnullnull 1 nullhe indenull is enullual to the vertical distance measured in the central lonnullitudinal vertical plane nulletnullee
34、n the nullasic plane of the headform and the ednulle of the shell anullove the enullesnullnullnullnull 2 nullhis indenull should nulle furnished to annull person nullho renulluests the informationnull nullith respect to a helmet identified nullnull manufacturernull model desinullnation and sinullenu
35、llnull nullaterialsInull the nullace protector is nullade onull any nullaterial nullhich is nullnonulln to nulle adnullersely anullnullected nully contact nullith hydrocarnullonsnull cleaning nullnullidsnullpaintsnull transnullers or other enulltraneonulls additionsnull the nullace protector shall c
36、arry an appropriate nullarning as specinulled in 9nullnullnullnullor those parts onull the nullace protector conulling into contact nullith snullinnull the nullaterial nullsed shall nulle nullnonulln not to nullndergo apprecianullle alteration nullronull contact nullith snulleat or nullronull the sn
37、ullnullstances linullely to nulle nullonullnd in toiletriesnull nullaterials nullhich are nullnonulln to canullse snullin disorders shall not nulle nullsednullAll nulletal parts shall nulle corrosion-resistant or shall hanulle a corrosion-resistant nullnishnullnull nullonstructionnullnullnull nullac
38、e protectornullnullnullnullnull nulleneralThe nullace protector shall conuller areas onull the nullacenullhead in accordance nullith the shaded region onull nullignullre nullnullAny gaps in the nullace protector nullaterial shall nulle not nullore than: anull nullnull nullnull in at least one plane
39、nullinullenull horinullontal or nullerticalnull nullor nullace protectors in the nullnullnior nullnullnder nullnullnull and nullonullennulls sinulle rangesnullnullnull nullnull nullnull in at least one plane nullinullenull horinullontal or nullerticalnull nullor nullace protectors in the senior sinu
40、lle rangenullnullnullnullnull nullhere a senior face protector incorporates a nullapnullsnull nullreater than 55 mm in either planenull additional nullarninnulls renullardinnull use nullith an appropriatelnull sinulled nullall are renulluired on the face protector and its outer packanullinnull nulls
41、ee Clause 8 and 9.1nullnullThere shall nulle no sharp edges on the inside onull the nullace protectornull and any rigid pronullections innullards shall nulle conullered nullith protectinulle paddingnullThe nullace protector shall nulle:nullnull anullle to nulle secnullrely nulltted to a nullearer on
42、ull the sinulle it is intended to nullt and it shall not nulle possinullle to readily dislodge it nullronull its intended nullearing positionnull2null held anullay nullronull the nullace nully protectinulle paddingnullBS 7928-2:2009null null null BSI 2009BRITISH STANDARDnullnullnullnull2 nullelded n
43、ullire protectorsAll nullire ends shall ternullinate on the onullter perinulleter onull the nullace protectornull anullay nullronull the nullacenull nullelded nulloints shall nulle located so that a nulleld nullailnullre nullnder stress is nullnlinullely to canullse innullnullry to the nullearernull
44、nullnullnullnullnull nulletention systenullnulleans shall nulle pronullided nullor retaining the nullace protector on the nullearernulls head in the intended nullearing positionnullnullnullnullnull 1 nullnnull fasteninnull devicenullsnull should nulle permanentlnull attached to the retention snullst
45、emnullAny chin strap shall nulle not less than nullnull nullnull nullide and not nullore than 2null nullnull nullide and shall nulle elasticated or nulltted nullith a nullastening denullice to adnullnullst and nullaintain tension in the strapnullnullnullnullnull 2 Chin straps manull nulle fitted nul
46、lith paddinnull or other means of enhancinnull comfort for the nullearernullnullignullre null nullenullnition of face protector areas of conullerageSection on nullertical longitnulldinal planenulleynull AAnull plane2 Renullerence planenull Basic planenull nulloint Anull nulloint Rnull nulloint null7
47、 nullentral nullertical anullisBRITISH STANDARDnull BSI 2009 null nullBS 7928-2:2009null nullnullpact attenuationnullhen the nullace protector is tested nullsing the nullethod specinulled in Annenull Anull the nullanullinullnullnull deceleration onull the headnullornull nulltted nullith the nullace
48、protector shall not enullceed 2null0 nullnnullnullnullnullnull 1 nullhe snullmnullol nullnsinullnifies a deceleration of 9null81 mnulls2nullnullnullnullnull 2 nulldeallnullnull impact attenuation should nulle assessed usinnull a cricket nullall movinnull at a speed simulatinnull nullonulllinnull in
49、a matchnull nullhis is currentlnullimpractical in a lanulloratornull environmentnull honullevernull there is nullood theoretical correlation nulletnulleen a cricket nullall impact at a speed of 25 mnulls to 3null mnulls and a 15 null impact nullased on the fallinnull headformnull7 nullestingnullne nullace protector onull each sinulle onullnullered nullor salenull nullith a nullininullnullnull onull sinulldistrinullnullted as enullenly as possinullle across the sinulle rangenull shall nulle testednullnullace protectors shall nulle tested in the condition in nullhich they are onullnullered nul
