{"id":2172,"date":"2025-03-02T18:29:45","date_gmt":"2025-03-02T10:29:45","guid":{"rendered":"https:\/\/led.amasly.com\/?p=2172"},"modified":"2025-03-06T22:56:48","modified_gmt":"2025-03-06T14:56:48","slug":"explosive-dust-environment-explosion-proof-electrical-equipment-selection-requirements-and-preventive-measures","status":"publish","type":"post","link":"https:\/\/led.amasly.com\/sk\/explosion-proof-equipment\/explosive-dust-environment-explosion-proof-electrical-equipment-selection-requirements-and-preventive-measures\/","title":{"rendered":"V\u00fdbu\u0161n\u00e9 prachov\u00e9 prostredie, po\u017eiadavky na v\u00fdber nev\u00fdbu\u0161n\u00fdch elektrick\u00fdch zariaden\u00ed a prevent\u00edvne opatrenia"},"content":{"rendered":"

V\u00fdbu\u0161n\u00e9 prachov\u00e9 prostredie, po\u017eiadavky na v\u00fdber nev\u00fdbu\u0161n\u00fdch elektrick\u00fdch zariaden\u00ed a prevent\u00edvne opatrenia<\/strong><\/strong><\/h1>\n\n\n\n

Po\u017eiadavky na v\u00fdber elektrick\u00fdch zariaden\u00ed odoln\u00fdch proti v\u00fdbuchu a prevent\u00edvne opatrenia<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

V\u00fdbuch prachu sa t\u00fdka hlavne hor\u013eav\u00e9ho prachu s ve\u013ekos\u0165ou \u010dast\u00edc men\u0161ou ako 75um, v ur\u010ditom rozsahu vzdu\u0161nej suspenzie, ktor\u00fd dosiahol medzn\u00fa koncentr\u00e1ciu v\u00fdbu\u0161nosti, v otvorenom ohni, vysokom teple, statickej elektrine pri zap\u00e1len\u00ed v\u00fdbuchu. Sila tejto chemickej reakcie je \u00fa\u017easn\u00e1, sp\u00f4sob\u00ed ve\u013ek\u00e9 \u0161kody na \u017eivotoch \u013eud\u00ed v okol\u00ed. A chc\u00fa vytvori\u0165 v\u00fdbuch prachu musia ma\u0165 p\u00e4\u0165 podmienok, v uvedenom porad\u00ed je zdroj zap\u00e1lenia, hor\u013eav\u00fd prach, kysl\u00edk, obmedzen\u00fd priestor, suspenzia. Aby ste zabr\u00e1nili v\u00fdbuchu prachu v pr\u00edpade v\u00e4\u010d\u0161ieho mno\u017estva hor\u013eav\u00e9ho prachu, mus\u00edte prija\u0165 spr\u00e1vne opatrenia na vy\u010distenie prachu, odstr\u00e1ni\u0165 v\u0161etky zdroje vznietenia (otvoren\u00fd plame\u0148, vysok\u00e9 teplo, statick\u00e1 elektrina), opatrenia na zmiernenie v\u00fdbuchu, potla\u010denie v\u00fdbuchu a izol\u00e1ciu v\u00fdbuchu.<\/p>\n\n\n\n

1 Ak\u00e9 s\u00fa faktory vzniku v\u00fdbuchu prachu?<\/strong><\/strong><\/h2>\n\n\n\n

 Niektor\u00e9 <\/strong>koncentr\u00e1cia prachu: vysok\u00e1 koncentr\u00e1cia, ve\u013ek\u00fd rozstup prachov\u00fdch \u010dast\u00edc, \u013eahk\u00e9 \u0161\u00edrenie plame\u0148a<\/p>\n\n\n\n

Obsah kysl\u00edka<\/strong>: <\/strong>Z\u00e1kladom spa\u013eovania prachu je kysl\u00edk.<\/p>\n\n\n\n

Vhodn\u00fd zdroj zap\u00e1lenia<\/strong><\/p>\n\n\n\n

Mus\u00ed by\u0165 v pozastaven\u00ed<\/strong>: <\/strong>Zv\u00e4\u010d\u0161ite kontaktn\u00fa plochu plynu s pevnou l\u00e1tkou a ur\u00fdchlite r\u00fdchlos\u0165 reakcie.<\/p>\n\n\n\n

V relat\u00edvne obmedzenom priestore<\/strong>: <\/strong>pr\u00e1ve v uzavretom priestore m\u00f4\u017ee d\u00f4js\u0165 k prudk\u00e9mu n\u00e1rastu tlaku a teploty a n\u00e1sledn\u00e9mu v\u00fdbuchu<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

2 Po\u017eiadavky na elektrick\u00e9 zariadenia odoln\u00e9 vo\u010di v\u00fdbuchu prachu<\/strong><\/strong><\/h2>\n\n\n\n

1.1 Po\u017eiadavky na \u0161krupinu<\/strong><\/strong><\/h3>\n\n\n\n

Existuj\u00fa dve hlavn\u00e9 kateg\u00f3rie prachotesn\u00e9ho pl\u00e1\u0161\u0165a, prv\u00e1 kateg\u00f3ria pre 6 \u00farovn\u00ed prachotesn\u00e9ho pl\u00e1\u0161\u0165a, m\u00f4\u017ee \u00faplne zabr\u00e1ni\u0165 v\u0161etk\u00e9mu prachu do druhej kateg\u00f3rie pre 5 \u00farovn\u00ed prachotesn\u00e9ho pl\u00e1\u0161\u0165a, tento pl\u00e1\u0161\u0165 ako prachotesn\u00fd pl\u00e1\u0161\u0165 prachu je o nie\u010do hor\u0161\u00ed, ale tie\u017e schopn\u00fd zabr\u00e1ni\u0165 v\u00e4\u010d\u0161ine prachu do norm\u00e1lnej prev\u00e1dzky zariadenia neovplyv\u0148uje celok. Cel\u00fd prachov\u00fd pl\u00e1\u0161\u0165 na prevenciu v\u00fdbuchu prachu m\u00e1 ve\u013emi d\u00f4le\u017eit\u00fa \u00falohu, preto sa pri v\u00fdrobe prachov\u00e9ho pl\u00e1\u0161\u0165a m\u00e1 na povrch vyry\u0165 trval\u00e1 zna\u010dka Ex, pri\u010dom cel\u00fd prachov\u00fd pl\u00e1\u0161\u0165 by mal by\u0165 ozna\u010den\u00fd \u00fadajmi, varovaniami at\u010f.<\/p>\n\n\n\n

1.2 V\u00fdber materi\u00e1lov pre elektrick\u00e9 zariadenia<\/strong><\/strong><\/h3>\n\n\n\n

Aby sa zabr\u00e1nilo prasknutiu cel\u00e9ho prachov\u00e9ho pl\u00e1\u0161\u0165a, ako aj aby sa zabezpe\u010dilo, \u017ee prachov\u00fd pl\u00e1\u0161\u0165 prachotesn\u00e9ho v\u00fdkonu, pri v\u00fdbere materi\u00e1lov prachov\u00e9ho pl\u00e1\u0161\u0165a sa mus\u00ed vybra\u0165 pri v\u00e4\u010d\u0161ej pevnosti materi\u00e1lu, ako je liatina, oce\u013e at\u010f. Ak je za ur\u010dit\u00fdch osobitn\u00fdch okolnost\u00ed objem prachovej \u0161krupiny men\u0161\u00ed ako 2 l, tentoraz si m\u00f4\u017eete vybra\u0165 plast na v\u00fdrobu prachovej \u0161krupiny, ale nem\u00f4\u017eete si vybra\u0165 oby\u010dajn\u00e9 plasty, ale vybra\u0165 si kvalitnej\u0161ie priemyseln\u00e9 plasty a zabezpe\u010di\u0165, aby hr\u00fabka cel\u00e9ho priemyseln\u00e9ho plastu nemohla by\u0165 pr\u00edli\u0161 ve\u013ek\u00e1, aby sa zabr\u00e1nilo vplyvu be\u017enej kon\u0161trukcie na situ\u00e1ciu, pri\u010dom pri v\u00fdbere priemyseln\u00fdch plastov mus\u00edme dba\u0165 na prevenciu statickej elektriny, aby sme zabezpe\u010dili, \u017ee odolnos\u0165 cel\u00e9ho priemyseln\u00e9ho plastu je men\u0161ia ako 10%. Odpor cel\u00e9ho priemyseln\u00e9ho plastu je men\u0161\u00ed ako 10\u03a9, ale aj v procese upev\u0148ovania skrutiek nastavi\u0165 kovov\u00e9 zakopan\u00e9 tesnenia, ktor\u00e9 m\u00f4\u017eu by\u0165 priazniv\u00e9 pre odtok elektrostatick\u00e9ho v\u00fdboja, aby sa zabr\u00e1nilo statickej elektrine sp\u00f4sobenej javom v\u00fdbuchu prachu.<\/p>\n\n\n\n

1.3 Maxim\u00e1lna pr\u00edpustn\u00e1 povrchov\u00e1 teplota prachov\u00e9ho krytu<\/strong><\/strong><\/h3>\n\n\n\n

Pou\u017eitie prachotesn\u00e9ho pl\u00e1\u0161\u0165a \u00fa\u010dinne zabra\u0148uje prenikaniu prachu, zabra\u0148uje zap\u00e1leniu prachu obl\u00fakovou iskrou, ale teplo elektrick\u00e9ho zariadenia st\u00e1le vedie k v\u00fdbuchu prachu, tak\u017ee mus\u00edme pou\u017ei\u0165 ur\u010dit\u00fa met\u00f3du na zn\u00ed\u017eenie teploty cel\u00e9ho elektrick\u00e9ho zariadenia, aby sme zabr\u00e1nili teplu elektrick\u00e9ho zariadenia sp\u00f4soben\u00e9mu v\u00fdbuchom prachu. V povrchovej teplote elektrick\u00e9ho zariadenia na obmedzenie pr\u00e1ce pred, v prvom rade, ma\u0165 pochopenie prachu vo vzduchu, teplota vznietenia r\u00f4znych prachu existuje ve\u013ek\u00fd rozdiel, pod\u013ea teploty vznietenia prachu obmedzi\u0165 teplotu ohrevu elektrick\u00e9ho zariadenia, nem\u00f4\u017ee slepo zn\u00ed\u017ei\u0165 teplotu cel\u00e9ho pl\u00e1\u0161\u0165a elektrick\u00e9ho zariadenia. V celom procese pr\u00e1ce stavebn\u00e9ho prostredia by malo by\u0165 dlhodob\u00e9 \u010distenie prachu, zn\u00ed\u017eenie teploty prachu v celom prostred\u00ed a z\u00e1rove\u0148 vykon\u00e1va\u0165 pravideln\u00e9 \u010distenie elektrick\u00fdch zariaden\u00ed, aby sa zabr\u00e1nilo javu hromadenia prachu.<\/p>\n\n\n\n

Ak je potrebn\u00e9 otvori\u0165 elektrick\u00e9 zariadenie po\u010das cel\u00e9ho pracovn\u00e9ho procesu, mus\u00ed sa zabezpe\u010di\u0165, aby teplota vo vn\u00fatri elektrick\u00e9ho zariadenia bola ni\u017e\u0161ia ako maxim\u00e1lna teplota stanoven\u00e1 na povrchu, aby sa zabr\u00e1nilo v\u00fdbuchu prachu sp\u00f4soben\u00e9mu otvoren\u00edm zariadenia.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

3 elektrick\u00e9 zariadenia odoln\u00e9 proti v\u00fdbuchu ako vybra\u0165 typ<\/strong><\/strong><\/h2>\n\n\n\n

Pri v\u00fdbere prachotesn\u00e9ho nev\u00fdbu\u0161n\u00e9ho zariadenia pred prv\u00fdm pochopen\u00edm cel\u00e9ho elektrick\u00e9ho zariadenia s\u00fa prachotesn\u00e9 elektrick\u00e9 zariadenia v celku ozna\u010den\u00e9 logom ExtD, pri\u010dom jeho pr\u00edslu\u0161n\u00e1 kateg\u00f3ria pre ExtD nem\u00f4\u017ee nahradi\u0165 plynov\u00e9 nev\u00fdbu\u0161n\u00e9 elektrick\u00e9 prachotesn\u00e9 elektrick\u00e9. Pochopte tieto \u00fadaje a potom pod\u013ea konkr\u00e9tneho stavebn\u00e9ho prostredia s kateg\u00f3riou prachu pre konkr\u00e9tny v\u00fdber elektrick\u00e9ho zariadenia, napr\u00edklad v pr\u00edpade vysokej koncentr\u00e1cie prachov\u00e9ho materi\u00e1lu sa mus\u00ed vybra\u0165 \u201cprachotesn\u00fd\u201d pl\u00e1\u0161\u0165, aby sa zabr\u00e1nilo vniknutiu prachu do elektrick\u00e9ho zariadenia, ktor\u00fd by mohol sp\u00f4sobi\u0165 v\u00fdbuch. V niektor\u00fdch pr\u00edpadoch je koncentr\u00e1cia prachu mal\u00e1, \u017eiadny oblak prachu len vrstva prachu miesta, pre prachov\u00fd pl\u00e1\u0161\u0165 m\u00f4\u017eete zvoli\u0165 \u201cprachotesn\u00fd\u201d pl\u00e1\u0161\u0165, tak\u017ee m\u00f4\u017eete zabr\u00e1ni\u0165 javu v\u00fdbuchu prachu. Prachotesn\u00e9 elektrick\u00e9 typy s\u00fa ExtD typ ochrany pl\u00e1\u0161\u0165a, ExiD iskrovo bezpe\u010dn\u00fd, ExmD typ ochrany proti zaliatiu, ExpD typ ochrany proti pretlaku, pri\u010dom rozpozn\u00e1vaj\u00fa znaky nev\u00fdbu\u0161n\u00e9ho elektrick\u00e9ho zariadenia, spr\u00e1vny v\u00fdber nev\u00fdbu\u0161n\u00e9ho elektrick\u00e9ho, ako napr\u00edklad ExtDA21IP65T135 \u2103, Ex znaky nev\u00fdbu\u0161nosti, tD typ ochrany pl\u00e1\u0161\u0165a, A21A trieda zariadenia (hor\u013eav\u00e9) 21 oblast\u00ed, IP56 \u00farove\u0148 ochrany zariadenia, T135 \u2103 maxim\u00e1lna povrchov\u00e1 teplota zariadenia.<\/p>\n\n\n\n

Po ur\u010den\u00ed v\u0161etk\u00fdch elektrick\u00fdch zariaden\u00ed odoln\u00fdch proti v\u00fdbuchu je in\u0161tal\u00e1cia zariadenia tie\u017e ve\u013emi d\u00f4le\u017eitou s\u00fa\u010das\u0165ou, len v s\u00falade s existuj\u00facimi \u0161pecifik\u00e1ciami, ktor\u00e9 sa maj\u00fa nain\u0161talova\u0165, aby bolo mo\u017en\u00e9 hra\u0165 elektrick\u00e9 zariadenia odoln\u00e9 proti prachu, aby sa zabezpe\u010dila bezpe\u010dn\u00e1 v\u00fdroba, aby sa zabr\u00e1nilo javu v\u00fdbuchu prachu, aby sa zabezpe\u010dila bezpe\u010dnos\u0165 \u017eivota a zdravia v\u0161etk\u00fdch zamestnancov.<\/p>\n\n\n\n

4 prevencia v\u00fdbuchu prachu in\u00e9 technick\u00e9 opatrenia<\/strong><\/strong><\/h2>\n\n\n\n

4<\/strong>.1 Hlavn\u00e9 nev\u00fdbu\u0161n\u00e9 opatrenia prijat\u00e9 na z\u00e1klade v\u00fdberu a usporiadania elektrick\u00e9ho zariadenia v\u00fdrobn\u00e9ho procesu<\/strong><\/strong><\/h3>\n\n\n\n

Na zaistenie bezpe\u010dnosti cel\u00e9ho v\u00fdrobn\u00e9ho procesu je potrebn\u00e9 najprv vykona\u0165 primeran\u00fd n\u00e1vrh procesu, aby sa zabr\u00e1nilo vzniku prachu, po ktorom nasleduje spr\u00e1vny v\u00fdber elektrick\u00e9ho zariadenia, a potom aj na cel\u00fd v\u00fdrobn\u00fd proces kontroly zapa\u013eovania, aby sa zabr\u00e1nilo otvoren\u00e9mu oh\u0148u, aby sa niektor\u00e9 elektrick\u00e9 zariadenia uzemnili a automatick\u00fd alarm a in\u00e9 nastavenia, a nakoniec zabezpe\u010di\u0165, aby v\u0161etky stroje a zariadenia mohli spr\u00e1vne fungova\u0165.<\/p>\n\n\n\n

4<\/strong>.2 Odstr\u00e1nenie nahromaden\u00e9ho prachu, aby sa zabr\u00e1nilo v\u00fdbuchu<\/strong><\/strong><\/h3>\n\n\n\n

Hromadenie prachu je jedn\u00fdm z d\u00f4le\u017eit\u00fdch d\u00f4vodov vzniku v\u00fdbuchu prachu, preto sa uistite, \u017ee v celej dielni odv\u00e1dzate dobr\u00fa pr\u00e1cu pri \u010disten\u00ed, \u010disten\u00ed vzduchu a zariaden\u00ed v pr\u00edtomnosti prachu. Preto\u017ee prach m\u00f4\u017ee za ur\u010dit\u00fdch podmienok produkova\u0165 aj hor\u013eav\u00e9 plyny, tak\u017ee pou\u017eitie mokr\u00fdch met\u00f3d nem\u00f4\u017ee \u00faplne odstr\u00e1ni\u0165 faktory v\u00fdbuchu prachu, pri \u010disten\u00ed prachu sa sna\u017ete zvoli\u0165 met\u00f3du podtlakovej adsorpcie na odstr\u00e1nenie v\u0161etk\u00e9ho prachu, aby ste mohli vykona\u0165 komplexn\u00e9 \u010distenie bez slep\u00fdch uli\u010diek, aby ste dosiahli komplexn\u00e9 vy\u010distenie pracovn\u00e9ho prostredia. Prachu vo vzduchu je \u010doraz viac, prirodzene sa tvor\u00ed sediment\u00e1cia a sediment\u00e1cia je aj hlavnou pr\u00ed\u010dinou v\u00fdbuchu, preto mus\u00edme komplexne odstr\u00e1ni\u0165 nahromaden\u00fd prach.<\/p>\n\n\n\n

4<\/strong>.3 Opatrenia na odvzdu\u0161nenie, potla\u010denie a izol\u00e1ciu v\u00fdbuchu<\/strong><\/strong><\/h3>\n\n\n\n

Odstr\u00e1\u0148te faktory v\u00fdbuchu prachu, aby ste zabr\u00e1nili vzniku v\u00fdbuchu prachu, je ur\u010dite d\u00f4le\u017eit\u00fdm faktorom na zabezpe\u010denie bezpe\u010dnej v\u00fdroby a v niektor\u00fdch pr\u00edpadoch sa faktory v\u00fdbuchu prachu nedaj\u00fa odstr\u00e1ni\u0165, tentoraz mus\u00edte prija\u0165 ur\u010dit\u00fa met\u00f3du kontroly rozsahu v\u00fdbuchu, aby ste zabr\u00e1nili vzniku ve\u013ekej oblasti v\u00fdbuchu, \u010do m\u00e1 za n\u00e1sledok v\u00e4\u010d\u0161ie straty. A chcete kontrolova\u0165 rozsah v\u00fdbuchu, existuj\u00fa tri hlavn\u00e9 met\u00f3dy.<\/p>\n\n\n\n

Prvou met\u00f3dou je od\u013eah\u010denie v\u00fdbuchu, hlavne prostredn\u00edctvom in\u0161tal\u00e1cie mechanick\u00fdch zariaden\u00ed alebo budov na hasiacich pr\u00edstrojoch typu box, tento hasiaci pr\u00edstroj m\u00f4\u017ee by\u0165 v pr\u00edpade lokalizovan\u00e9ho v\u00fdbuchu a v\u00fdbuchu mie\u0161ania plame\u0148ov na dosiahnutie \u00fa\u010dinku potla\u010denia v\u00fdbuchu, aby sa dosiahlo od\u013eah\u010denie tlaku na kontrolu rozsahu v\u00fdbuchu;<\/p>\n\n\n\n

Druhou met\u00f3dou je potla\u010denie v\u00fdbuchu, potla\u010denie v\u00fdbuchu sa uskuto\u010d\u0148uje najm\u00e4 prostredn\u00edctvom regul\u00e1tora potla\u010denia v\u00fdbuchu, ktor\u00fd zohr\u00e1va \u00falohu v regul\u00e1tore potla\u010denia v\u00fdbuchu, ktor\u00fd mo\u017eno zisti\u0165 prostredn\u00edctvom dvoch infra\u010derven\u00fdch sond na v\u00fdbuchu prachu pri zisten\u00ed v\u00fdbuchu prachu v\u010das spusti\u0165 poplachov\u00e9 opatrenia, pri\u010dom sa preru\u0161\u00ed pr\u00edvod energie, otvor\u00ed sa ochrann\u00e9 zariadenie, cel\u00fd regul\u00e1tor potla\u010denia v\u00fdbuchu sa uskuto\u010d\u0148uje najm\u00e4 prostredn\u00edctvom kontroly \u00fa\u010dinku v\u00fdbuchu, aby sa dosiahol \u00fa\u010dinok ochrany bezpe\u010dnej v\u00fdroby;<\/p>\n\n\n\n

Tretia met\u00f3da je nev\u00fdbu\u0161n\u00e1, ktor\u00e1 sa realizuje najm\u00e4 prostredn\u00edctvom nev\u00fdbu\u0161n\u00fdch dver\u00ed a in\u00fdch zariaden\u00ed na kontrolu rozsahu v\u00fdbuchu prachu a zabr\u00e1nenie sp\u00f4sobeniu v\u00e4\u010d\u0161\u00edch \u0161k\u00f4d.<\/p>\n\n\n\n

Cel\u00e1 \u00fa\u013eava od v\u00fdbuchu, potla\u010denie v\u00fdbuchu, izol\u00e1cia v\u00fdbuchu t\u00fdchto troch met\u00f3d sa m\u00f4\u017ee vykona\u0165 vo ve\u013ekej miere pre cel\u00fd rozsah kontroly v\u00fdbuchu prachu, aby sa zabr\u00e1nilo v\u00e4\u010d\u0161\u00edm strat\u00e1m, aby sa lep\u0161ie zabezpe\u010dil hladk\u00fd priebeh cel\u00e9ho procesu v\u00fdstavby, pri\u010dom pri pou\u017eit\u00ed t\u00fdchto troch met\u00f3d by sa malo vybra\u0165 aj vysokokvalitn\u00e9 a primeran\u00e9 zariadenie na in\u0161tal\u00e1ciu, aby sa zabr\u00e1nilo pou\u017eitiu nekvalitn\u00e9ho zariadenia.<\/p>\n\n\n\n

4<\/strong>.4 Posilnenie riadenia, objasnenie syst\u00e9mov, dodr\u017eiavanie implement\u00e1cie, d\u00f4kladn\u00e1 kontrola a zlep\u0161enie kvality zamestnancov<\/strong><\/strong><\/h3>\n\n\n\n

Pri prevencii v\u00fdbuchu prachu je ve\u013emi d\u00f4le\u017eit\u00e9 vykon\u00e1va\u0165 doh\u013ead nad prevenciou a kontrolou \u013eud\u00ed, prv\u00e1 vec, ktor\u00fa je potrebn\u00e9 urobi\u0165, je vytvori\u0165 jasn\u00fd syst\u00e9m zodpovednosti za pr\u00e1cu ka\u017ed\u00e9ho zamestnanca, ktor\u00fd bude vykon\u00e1va\u0165 primeran\u00e9 usporiadanie, bude zodpovedn\u00fd za vykon\u00e1vanie osoby, pravidelne vykon\u00e1va\u0165 dobr\u00fa pr\u00e1cu na kontrolu usporiadania at\u010f. a v\u010dasn\u00fa \u00fadr\u017ebu a v\u00fdmenu zariaden\u00ed at\u010f, a po druh\u00e9 zavies\u0165 pr\u00edsny syst\u00e9m odmien a trestov za dobr\u00fa pr\u00e1cu pre odmeny zamestnancov, pre t\u00fdch, ktor\u00ed maj\u00fa Chyby pri pr\u00e1ci by mali by\u0165 potrestan\u00ed, aby sa z\u00e1sadne zlep\u0161ila bezpe\u010dnos\u0165 celej pr\u00e1ce, a nakoniec, aby v\u0161etci zamestnanci vykon\u00e1vali komplexn\u00fa odborn\u00fa pr\u00edpravu a hodnotenie, aby sa zabezpe\u010dilo, \u017ee v\u0161etci zamestnanci s\u00fa schopn\u00ed robi\u0165 bezpe\u010dn\u00fa v\u00fdrobu, aby sa zabr\u00e1nilo v\u00e1\u017enym nehod\u00e1m v d\u00f4sledku ch\u00fdb zamestnancov a v\u00fdbuchov, aby sa pravidelne konali, napr\u00edklad predn\u00e1\u0161ky, vzdel\u00e1vanie at\u010f. s cie\u013eom zabezpe\u010di\u0165, aby ka\u017ed\u00fd zamestnanec mohol ma\u0165 dostato\u010dn\u00e9 kan\u00e1ly na vzdel\u00e1vanie a zvy\u0161ovanie pracovn\u00fdch zru\u010dnost\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"

Explosive dust environment, explosion-proof electrical equipment selection requirements and preventive measures Explosive dust environment explosion-proof electrical equipment selection requirements and preventive measures Dust explosion is mainly refers to the particle size less than 75um combustible dust, in a certain range of air suspension, reached the explosive limit concentration, in the open fire, high heat, static 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certain range of air suspension, reached the explosive limit concentration, in the open fire, high heat, 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