Izibane zokhuseleko zibalulekile kwiindawo ezininzi zemizi-mveliso, nakwiindawo ezithile zaselwandle. Kwezi ndawo, kukho iirhasi ezinokugqabhuka kunye nothuli oluthi, lwakuba luqalwe ziintlantsi okanye amaqondo obushushu aphezulu, lunokubangela iingozi ezimandundu okanye kwanoqhushumbo. Ukuze kuhlangatyezwane nezi bungozi zinokubakho, izibane ezingagqabhukiyo, njengesixhobo sokukhanyisa esenzelwe ngokukhethekileyo, zidlala indima ebalulekileyo. Izibane ezinobungqina bokudubula azikwazi nje ukubonelela ukukhanya okuyimfuneko, kodwa zikhusela ngokufanelekileyo iintlantsi okanye amaqondo obushushu aphezulu ekutshiseni iigesi ezinokutsha ezingqongileyo, ngaloo ndlela zinciphisa iingozi ezinokwenzeka. Banokuthintela naziphi na iintlantsi okanye ubushushu obuphezulu obuveliswe ngaphakathi ekutshiseni izinto ezinokutsha ezingqongileyo, ukuqinisekisa ukusetyenziswa kokhuseleko lokusiNgqongileyo.
Iingqikelelo ezisisiseko zezibane zokuthintela uqhushumbo lwaselwandle
Ubungqina bokudubula: Izibane zokuthintela uqhushumbo lwaselwandle ziyilwe ngokukwazi ukuthintela naziphi na iintlantsi okanye amaqondo obushushu aphezulu ngaphakathi ekukhanyeni ukuba angafikeleli ngaphandle kwaye alumeke iirhasi ezinokutsha ezingqongileyo okanye uthuli.
Ukusebenza kokutywina: Ukusebenza kokutywinwa komgangatho ophakamileyo yenye yeemfuneko ezisisiseko kwizibane ze-marine-proof-proof-proof ukunqanda iigesi ezinokutsha okanye umphunga ukuba ungangeni ngaphakathi emzimbeni wesibane.
Ukuxhatshazwa komzimba: Ngenxa yendalo engcolisayo yemeko-bume yaselwandle, izibane zokuthintela uqhushumbo elwandle zidla ngokwenziwa ngezinto ezikwaziyo ukugxwala, njengentsimbi engatyiwa okanye iialloyi ezikhethekileyo.
Isiqinisekiso sokhuseleko: Izibane ezikhusela ugqabhuko-dubulo lwaselwandle kufuneka zigqithise isiqinisekiso esithile sokhuseleko ukubonisa ukuba zingasetyenziswa ngokukhuselekileyo kwiindawo ezithile ezinobungozi.
Ukubaluleka kunye nemvelaphi yokusetyenziswa kwezibane zaselwandle ezikhusela ukuqhuma
ukhuseleko: Kwiindawo ezifana neetanki, amaqonga e-oyile kunye nabathwali beekhemikhali, ukuthintela imililo kunye nokudubula kubalulekile. Izibane ezikhusela ugqabhuko-dubulo zaselwandle zibonelela ngokukhanya okuyimfuneko ngelixa ugcina le ndawo ikhuselekile ngokuthintela ukutshiswa kwezinto ezingqongileyo ezinokutsha.
Ukuthotyelwa koMgaqo: Ii-arhente ezininzi zelizwe kunye nezamazwe ngamazwe zinemigangatho ecacileyo yokhuseleko kunye nemimiselo yezixhobo zombane ezisetyenziswa kwiindawo ezinokutsha kunye neziqhushumbisi. Ukusetyenziswa kwezibane ze-marine-proof-proof ezihambelana nemigangatho kuyimfuneko ukuthobela le mimiselo.
Ukuqhubekeka koMsebenzi: Kwiindawo zokusebenza ezigqithisileyo okanye ezinobungozi, ukugcina ukuqhubeka nokusebenza kubalulekile kwimpumelelo yeshishini. Izibane ezikhusela uqhushumbo lwaselwandle ziqinisekisa ukukhanya okuzinzile nakwezona meko zinzima, zinciphisa iziphazamiso ezingacetywanga.
Ukuziqhelanisa nokusingqongileyo: Izibane ze-marine-proof-proof lights zenzelwe ukujamelana neemeko ezinzima zendalo yaselwandle, kubandakanywa isitshizi setyuwa, ukufuma kunye nokutshintsha kweqondo lokushisa, ukuqinisekisa ukusebenza okuthembekileyo kwexesha elide.
Umgaqo-nkqubo wokusebenza wezibane zaselwandle ezikhusela uqhushumbo
Iimpawu zoyilo lwezibane zaselwandle ezikhusela ukuqhuma
(1) Iqokobhe elomeleleyo: Izibane ezikhusela ugqabhuko-dubulo zaselwandle zidla ngokusebenzisa izixhobo ezomeleleyo zeqokobhe, ezifana ne-aluminiyam okanye intsimbi engatyiwayo. Ezi zixhobo zinokumelana noxinzelelo oluphezulu kunye neempembelelo, ukukhusela amacandelo angaphakathi ukuba angonakaliswe, ngaloo ndlela ugwema iintlantsi okanye ukuvuza kobushushu.
(2) Uyilo olwandisiweyo lokhuseleko: Olu luyilo luqinisekisa ukuba nangona isibane sihluleka ngaphakathi, iintlantsi okanye ukushisa okuphezulu okwenziweyo akuyi kudluliselwa kwindawo yangaphandle. Oku kuphunyezwa ngokusetyenziswa kwezakhiwo ezikhethekileyo kunye nezixhobo, ezifana nokusetyenziswa kwezithintelo ezivuthayo kunye ne-thermal insulation.
(3) Ukusebenza kokutywina: Izibane zaselwandle ezinobungqina bokudubula zinomsebenzi obalaseleyo wokutywina ukuthintela iigesi ezinokutsha zangaphandle okanye umphunga ukuba ungangeni ngaphakathi kumzimba wesibane. Oku kunokufezekiswa ngokusebenzisa izitywina ezifana nezangqa zokutywina kunye neegaskets.
(4) Ukumelana nokubola kunye nokuthintela amanzi: Ukuqwalasela ubume bemeko-bume yaselwandle, izinto ezinganyangekiyo kwi-corrosion zisetyenziswa ekuyilweni kwezibane ze-marine-proof-proof lights kunye nokusebenza kakuhle kokungena kwamanzi ukuqinisekisa ukusebenza okuzinzile kwiindawo ezinzima.
(5) Umphezulu wobushushu obuphantsi: Uyilo kwakhona luthathela ingqalelo ulawulo lobushushu bomphezulu wokuqinisekisa ukuba iqondo lobushushu bomzimba wesibane lisezantsi kunobushushu obuzitshiselayo obuzijikelezileyo obunokutsha, ngaloo ndlela bunciphisa umngcipheko wogqabhuko-dubulo.
Ukuthintela njani ugqabhuko-dubulo olubangelwa ziintlantsi kunye nobushushu kwizibane ezikhusela ugqabhuko-dubulo lwaselwandle
(1) Ubume bokuthintela uqhushumbo: Ubume bokukhusela ugqabhuko-dubulo bunqanda ugqabhuko-dubulo lwangaphakathi ukusuka ekuvuzeni ukuya kwindawo yangaphandle. Kwanokuba ugqabhuko-dubulo lwangaphakathi lwenzeka, aluyi kutshisa iigesi ezivuthayo zangaphandle okanye uthuli.
(2) Uyilo lwangaphakathi: Yila indawo yangaphakathi yesibane ukunciphisa ukubakho kweentlantsi okanye ukuveliswa kobushushu, kubandakanywa ukusebenzisa i-wiring ekhethekileyo kunye noyilo lwecandelo lokunciphisa umngcipheko wokungaphumeleli.
(3) Ulawulo lobushushu: Sebenzisa iteknoloji yokutshatyalaliswa kobushushu kunye nezixhobo, ezifana neteknoloji yombhobho wokushisa okanye uyilo olukhethekileyo lokutshatyalaliswa kobushushu, ukugcina ukushisa kwangaphandle kwesibane ngaphakathi koluhlu olukhuselekileyo kunye nokuthintela ukuvutha kwezinto ezivuthayo ezijikelezayo.
(4) Uyilo lokhuseleko lombane: kubandakanywa nokusetyenziswa kombane ophantsi kunye noyilo oluphantsi lwangoku, kunye nokongeza izixhobo zokhuseleko (ezifana nokukhusela isiphaluka esifutshane, ukhuseleko lomthwalo ogqithisiweyo, njl.
Iimeko zokusetyenziswa kwezibane ezikhusela ukudubula elwandle
Icandelo lePetrochemical
- Amaqonga eeTanker kunye neOli: Xa uphatha, uthutha kwaye ugcina iikhemikhali ezinokutsha neziqhumayo, kubalulekile ukuthintela naziphi na iintlantsi ezinokubangela ugqabhuko-dubulo. Izibane ezikhusela uqhushumbo lwaselwandle zibonelela ngokukhanya okukhuselekileyo kwezi ndawo, zinciphisa umngcipheko weengozi.
- Indawo yokucoca: Ubuninzi beegesi ezinokutsha zikhutshwa ngexesha lenkqubo yokucocwa kweoli. Izibane zokuthintela uqhushumbo lwaselwandle zisetyenziselwa ukuqinisekisa ukukhanya okukhuselekileyo kwendawo yokusebenza kunye nokuthintela imililo okanye uqhushumbo olubangelwa zizixhobo zombane.
Umzi mveliso
- Imigodi engaphantsi komhlaba: Kwimigodi engaphantsi komhlaba, kukho izinto ezinokutsha neziqhumayo ezifana nerhasi nothuli lwamalahle. Izibane ezikhusela ugqabhuko-dubulo zaselwandle zibonelela ngokukhanya okuyimfuneko ngelixa uqinisekisa ukhuseleko kwaye uphepha ugqabhuko-dubulo lwerhasi.
- Indawo yemigodi: Kwimingxuma evulekileyo okanye kwezinye iindawo zemigodi, nangona zivulekile, ukukhanya okungaqhushumbayo kusafuneka ukuqinisekisa ukusebenza okukhuselekileyo ebusuku okanye kwiimeko zokukhanya okuphantsi.
Indawo yothuli
- Izisele eziziinkozo: Uthuli oluziinkozo lugqabhuka kakhulu kwiindawo ezithile. Ukusetyenziswa kwezibane ze-marine-proof-proof-proof lights kunokuthintela ngokufanelekileyo iintlantsi zombane ekutshiseni uthuli kunye nokukhusela ukhuseleko lweendawo zokugcina.
- Izinto zokusila ezilukiweyo: Iinkqubo zokuvelisa amalaphu zivelisa uthuli olucolekileyo lwefiber olunokwenza imixube eqhumayo emoyeni. Izibane ezikhusela ugqabhuko-dubulo zaselwandle zibonelela ngokukhanya okukhuselekileyo kwiindawo ezinjalo kwaye zinciphisa umngcipheko womlilo.
Ezinye iindawo ezinokuba nobungozi
- Izityalo ezixuba amayeza: Ngexesha lenkqubo yokuxutywa kwamayeza, ukusabela kweekhemikhali ezithile kunokuvelisa iigesi ezinokutsha okanye umphunga. Izibane ezikhusela uqhushumbo lwaselwandle ziqinisekisa ukusebenza ngokukhuselekileyo kwezi ndawo kwaye zinqanda imililo ngengozi okanye ugqabhuko-dubulo olubangelwa kukusabela kweekhemikhali.
- Ilebhu yeKhemistri: Iintlobo ngeentlobo zeekhemikhali zisetyenziswa kwiilabhoratri ezinokuvelisa iigesi ezinokutsha okanye iikhemikhali ezinokuba yingozi. Ukusetyenziswa kwezibane ezikhusela ukuqhuma elwandle kwezi ndawo kunokunyusa ukhuseleko kwaye kuthintele iingozi ezibangelwa zizixhobo zombane.
Izibonelelo zokufakela izibane ezikhusela uqhushumbo elwandle
Ukuphucula ukhuseleko emsebenzini
- Ukuthintela ukuqhuma okubangelwa yi-Spark-Induced: Izibane ze-marine-proof-proof-proof lighting zenzelwe ukuphucula kakhulu ukhuseleko lwendawo yokusebenza ngokuthintela iintlantsi zangaphakathi okanye amaqondo obushushu aphezulu ekudibaneni neendawo zangaphandle ezinokutsha.
- Ukuziqhelanisa nemekobume erhabaxa: Ezi zibane zinokumelana nemeko-bume yokusebenza enzima, njengokufuma okuphezulu, ubushushu obuphezulu, kunye nesitshizi setyuwa, ukuqinisekisa ukukhanya okuthembekileyo phantsi kweemeko ezahlukeneyo.
Ukuthobela imimiselo yokhuseleko kunye nemigangatho
- Hlangana nemigangatho yokhuseleko yamazwe ngamazwe: Izibane ezikhusela ukudubula zaselwandle zithobela imigangatho yokhuseleko yamazwe ngamazwe, efana ne-ATEX okanye i-IECEx. Ukufakela ezi zibane kunceda iinkampani ukuba zithobele imigaqo yokhuseleko efanelekileyo kwaye ziphephe imiba esemthethweni kunye nezohlwayo.
- Qinisekisa uxanduva lwenkampani: Ukusebenzisa izixhobo zokukhanyisa eziqinisekisiweyo zokuqhuma kubonisa ugxininiso lwenkampani kukhuseleko kunye nokuzinikela kwintlalontle yabasebenzi, inceda ukuseka umfanekiso omhle wenkampani.
Ukunciphisa umngcipheko weengozi
- Nciphisa iingozi ezinokubakho: Ngokunqanda ugqabhuko-dubulo olunokubakho olubangelwa ziintlantsi okanye ubushushu, izibane ezingagqabhukiyo elwandle zinciphisa amathuba eengozi emsebenzini.
- Ukunciphisa iziphumo: Nokuba ingozi yenzeke kwiimeko ezimandundu, uyilo lokukhanyisa okungagqabhukiyo kunokunciphisa umda wengozi, ngaloo ndlela kuncitshiswe ilahleko enokubakho.
Khusela ubomi babasebenzi kunye nokhuseleko lwepropathi
- Ukubonelela ngokukhanya kokhuseleko: Qinisekisa ukuba kukho ukukhanya okwaneleyo kwindawo yokusebenza ukuze kuncitshiswe izingozi ezibangelwa ukungaboni kakuhle kunye nokuqinisekisa ukhuseleko lwabasebenzi ngexesha lemihla ngemihla okanye iimeko eziphuthumayo.
- Ukunciphisa ilahleko yezoqoqosho: Ngokuthintela iingozi ezinkulu, iinkampani zinokuphepha ilahleko yezoqoqosho yembuyekezo ephezulu, umonakalo wezixhobo kunye nokuncipha kwemveliso okubangelwa kuqhushumbo.
Amanqaku aphambili ekukhetheni nasekufakeni izibane ezikhusela uqhushumbo elwandle
Khetha inqanaba elifanelekileyo lobungqina bokudubula ngokuhambelana nokusingqongileyo
- Qonda iimpawu zokusingqongileyo: Okokuqala, umgangatho ofunekayo wokukhusela ukuqhuma kufuneka unqunywe ngokusekelwe kuhlobo kunye neempawu zezinto ezinokutsha kunye neziqhushumbisi (ezifana negesi, i-steam okanye uthuli) ezikhoyo kwindawo yokusebenza.
- Ukuthobela imigangatho: Khetha izibane ezithobela imigangatho yokukhusela ugqabhuko-dubulo lwamazwe ngamazwe (ezifana ne-ATEX okanye i-IECEx) kwaye uqinisekise ukuba zilungele ulwahlulo lwezowuni ezithile (ezifana neZowuni 1, uMmandla wesi-2 wokusingqongileyo kwegesi, uMmandla wama-21, uMmandla wama-22 wokusingqongileyo uthuli. ).
Qwalasela uluhlu lokukhanyisa kunye neemfuno zokukhanya kwesibane
- Uluhlu lokukhanyisa kunye nokukhanya: Khetha uluhlu olufanelekileyo lokukhanyisa kunye nokukhanya ngokobukhulu bendawo yokusebenza kunye neemfuno zomsebenzi. Kufuneka uqinisekise ukuba izibane zokukhanya zinika ukukhanya okwaneleyo ukuze ubone ngokucacileyo indawo yokusebenza kunye neepaseji ezikhuselekileyo.
- Uhlobo lomthombo wokukhanya: Cinga ngemithombo yokukhanya ye-LED njengoko inika ubomi obude, ukusetyenziswa kwamandla aphantsi, kunye nokwenza ngcono kwiimeko zokushisa eziphantsi.
Ukuqwalaselwa kwendawo yokufakela kunye nobude
- Ukukhanyisa ngokufanelekileyo iindawo ezibalulekileyo: Qinisekisa ukuba izilungiso zifakwe kwindawo ekhanyisa ngokufanelekileyo iindawo zokusebenza kunye nezixhobo ezibalulekileyo.
- Kuphephe ukumenyezela kunye nezithunzi: Xa ufaka, cinga ukuphepha ilitha okanye izithunzi, ezinokuchaphazela ukubonakala kwabasebenzi kunye nemveliso.
- Qwalasela uLondolozo kunye noTshintsho: Khetha indawo yokuxhoma efikeleleka lula ukuququzelela ulungiso kunye nokutshintshwa kwendawo.
Ugcino kunye nokuhlolwa kwezibane ezikhusela uqhushumbo elwandle
- Ukuhlolwa rhoqo: Ukuhlolwa rhoqo kwezibane ezikhusela ugqabhuko-dubulo elwandle kuquka ukujonga imfezeko yendlu, ukusebenza kokutywina kunye noqhagamshelo lombane.
- Ukucoca kunye noLondolozo: Coca isilungiso rhoqo ukuze ususe uthuli kunye nolunye udoti olunokuthi luchaphazele ukusebenza kolu luhlu. Qinisekisa ukuba ukusebenza kokushisa kwesibane akuchaphazeleki.
- Ukutshintshwa kunye nokulungiswa: Landela imiyalelo yomenzi yokutshintshwa nokulungiswa kwesibane. Sebenzisa izincedisi zokuqala kunye namalungu ukugcina ukusebenza kobungqina bokudubula kwesibane.
Ugcino kunye nokugcinwa kwezibane zaselwandle ezingaqhushumba
(1) Rhoqo jonga umsesane wokutywina: Jonga rhoqo umsesane wokutywina kunye nezinye iindawo zokutywina zesibane. Nje ukuba iimpawu zomonakalo okanye ukuguga zifunyenwe, kufuneka zitshintshwe ngokukhawuleza ukugcina ukusebenza kakuhle kokutywinwa.
(2) Izibane ezicocekileyo: Coca i-casing kunye neendawo zokuhambisa ukukhanya kwesibane rhoqo ukususa uthuli, ukungcola kunye netyuwa ukunqanda ukuphuma kokukhanya ekuthinteleni kunye ne-casing corrored. Sebenzisa ilaphu elithambileyo kunye nesicoci esithambileyo, kwaye uphephe ukusebenzisa izinto ezirhabaxa okanye izicoci ezirhabaxa ezinokonakalisa umphezulu wesixhobo.
(3) Jonga kwaye ubeke endaweni yomthombo wokukhanya: Ukufumana imithombo yokukhanya eqhelekileyo, buyisela ibhalbhu ngamaxesha athile ngokwencwadi yemiyalelo okanye iingcebiso zomenzi ukuqinisekisa ukuqaqamba. Kwizibane ze-LED, nangona ziphila ixesha elide, ukusebenza kwazo kufuneka kuhlolwe rhoqo kwaye zitshintshwe xa kuyimfuneko.
(4) Jonga ukudityaniswa kombane: Jonga uqhagamshelo lombane lwesibane rhoqo ukuqinisekisa ukuba zonke iidibansi ziqinile kwaye azinamhlwa. Naziphi na iingcingo ezonakalisiweyo okanye amacandelo kufuneka atshintshwe okanye alungiswe yingcali.
(5) Kuphephe ukusebenza ngabantu abangezongcali: Ukugcinwa kunye nokutshintshwa komsebenzi kufuneka kwenziwe ngabachwephesha abaqeqeshiweyo, kwaye abangengabo abachwephesha kufuneka bathintelwe ukuba badibanise izibane ukukhusela umonakalo kwisakhiwo sobungqina bokuqhuma.
(6) Sebenzisa izincedisi zokuqala: Xa kutshintshwa nawaphi na amalungu, kubandakanywa izitywina, iibhalbhu, njl. njl., izincedisi zokuqala kufuneka zisetyenziswe ukugcina ukusebenza okungenakuqhambuka kunye nokhuseleko lwesibane.
Imibuzo edla ngokubuzwa malunga nezibane ezikhusela ukudubula zaselwandle
1. Ukwehla kokusebenza kokutywina: Ukuvezwa ixesha elide kwiindawo ezinzima kunokubangela ukuba iringi yokutywina iguge, yenze buthathaka ukusebenza kokutywina kwesibane, kwaye kwandise umngcipheko wokufuma kwangaphakathi okanye ukungena kwegesi evuthayo.
2.Ukukhanya komthombo wokukhanya kuyancipha: Ukukhanya komthombo wokukhanya we-LED kuya kuncipha kancinci emva kokuba ibhalbhu igugile okanye umthombo wokukhanya we-LED usetyenziswe ixesha elide.
3. Ukugqwala kweqokobhe: Ingakumbi kwindawo yolwandle, izinto ezifana netyuwa kunye nokufuma ziya kukhawulezisa inkqubo yokugqwala kweqokobhe.
4. Iingxaki zoqhagamshelo lombane: Ukungcangcazela, utshintsho lobushushu, kunye nokufuma kunokubangela ukuba uqhagamshelo lombane lukhululeke okanye lubole.
FAQ
Umbuzo: Kutheni izibane ezikhusela ugqabhuko-dubulo zaselwandle zinokusetyenziswa kwiindawo ezinokutsha neziqhumayo?
A: Izibane zokuthintela ugqabhuko-dubulo zaselwandle ziyilelwe ngokukodwa ukuthintela iintlantsi okanye amaqondo obushushu aphezulu avelisiweyo ngaphakathi ukuba angasasazeki kwindawo engqongileyo enokutsha. Bafezekisa oku ngendlu eyomeleleyo, iteknoloji yokutywina ekhethekileyo kunye noyilo lobungqina bokuqhuma, ukuqinisekisa ukusetyenziswa ngokukhuselekileyo nakwiindawo ezinobungozi.
Umbuzo: Lithetha ukuthini ibakala lokuthintela uqhushumbo lwezibane zokuthintela uqhushumbo elwandle?
A: Inqanaba lokumelana nokudubula libhekiselele kumgangatho apho izibane ezikhusela ugqabhuko-dubulo zaselwandle zinokusetyenziswa ngokukhuselekileyo. Ezi klasi zisekelwe kuxinzelelo oluphezulu lokuqhuma ukuba i-luminaire inokumelana nayo, iintlobo zezinto ezinokutsha ezinokubakho kwindawo yokusebenza, kunye nobukho beegesi okanye uthuli. Amanqaku aqhelekileyo aquka uMmandla 0, uMmandla 1, uMmandla 2 (okwimeko-bume zerhasi) kunye neZone 20, uMmandla wama-21, kunye neZone 22 (yeendawo ezinothuli).
Umbuzo: Unokukhetha njani isibane esifanelekileyo sokungaqhubi elwandle?
A: Ezi zinto zilandelayo kufuneka ziqwalaselwe xa kukhethwa: inqanaba elithile lokukhusela ukuqhuma kwendawo, iimfuno zokukhanya (ukukhanya, uluhlu lwemitha), indawo yokufakela (enje ngaphakathi nangaphandle, ukufuma, ubushushu), iimfuno zezinto eziphathekayo (ukumelana nokugqwala), njl. Qinisekisa ukuba izixhobo ozikhethayo ziyahlangabezana nemigangatho yokhuseleko kunye neemfuno zokukhanyisa kwindawo yakho ethile.
Umbuzo: Kufuneka wenze ntoni ukuba isibane sakho sokuthintela uqhushumbo lwaselwandle asilele?
A: Ukuba isibane asiphumeleli, umbane kufuneka unqunyulwe kuqala ukuthintela iingozi zokhuseleko. Emva koko qhagamshelana nochwepheshe oqeqeshiweyo ukuze ahlolwe kwaye alungiswe. Akukhuthazwa ukuba abantu abangengabo abachwephesha bazame ukudiliza okanye ukulungisa isibane ukuphepha ukonakalisa ukusebenza kwaso kokuqhuma.
Umbuzo: Ngaba izibane ezikhusela ugqabhuko-dubulo zaselwandle zingasetyenziswa nakweyiphi na imeko engqongileyo?
A: Hayi. Nangona izibane zokuthintela uqhushumbo lwaselwandle ziyilelwe ukusetyenziswa kwindawo enokutsha kunye neziqhushumbisi, isibane ngasinye sinenqanaba laso lokumelana nokudubula kunye nendawo esebenzayo. Xa ukhetha, izibane zebakala elihambelanayo kufuneka zikhethwe ngokweempawu zendawo yokusebenza yangempela ukuqinisekisa ukhuseleko.
