Lifting sling hnim taka dah chu a chhe lo ang maiin a lang thei a, mahse tui chuan mildew a tipung thei a, fiber a ti chhe thei a,—nylon sling-ah chuan—a hnim chuan 15% thlenga chakna hloh rei lo te a thlen thei a, a vawt chuan chakna a lo awm leh thei a ni A pawimawh zawk chu, nylon slings hi a hnim chuan a chakna 25% thleng a hloh thei a, hei hi moisture absorption vang a ni . Polyester sling erawh chu tuiin a nghawng tlem zawk a, mahse hnim taka dah a nih chuan mildew leh rot a la tuar thei tho. He kaihhruaina hian wet sling-a hlauhawmna awm thei te, synthetic material hrang hrangte hlauhawmna bik te, leh wet sling service-a thawn kir hmaa enfiah leh vawt dan tur te a zirchiang a ni.
Lifting sling chuan hmuh theiha a chheh a lan hma rei takah a chakna a hloh thei a—a châng chuan engmah vaukhânna awm lovin. Temperature extreme, ultraviolet (UV) radiation, leh chemical exposure te hi synthetic fiber tichhe thei environment factor pathum a ni. Canadian Center for Occupational Health and Safety (CCOHS) -in a sawi dan chuan, ni êng, tui lum, leh 90°C (194°F) aia lum chuan nylon leh polyester sling pahnih a tichhia thei a ni. OSHA chuan sling chakna chu ni êng leh ultraviolet light-a a awm chuan a tlahniam tih a sawi belh a, pension-a thil mamawh dangte chu siamtu emaw, mi thiam emaw zawhfiah a rawt bawk He kaihhruaina hian environment factor tin hian sling integrity a nghawng dan te, eng warning signs nge i zawn tur tih te, leh i lifting slings te chu a hun hmaa a chhiat loh nan engtin nge i ven theih ang tih te a zirchiang a ni.
7:1 safety factor nei lifting sling hian a rated working load limit aiin a let sarih zetin a breaking strength a nei a ni. Hei hian sling ton 1 rated chu a chhiat hmain ton 7 tal a tuar tur tihna a ni. 7:1 safety factor hi industry standard pawimawh tak takte chuan a phut a, chung zingah chuan EN 1492-1, EN 1492-2, leh AS 4497:2018 for synthetic slings te pawh a tel. He thuziak hian safety factor leh working load limit inthlauhna te, synthetic slings atana 7:1 hi standard a nih chhan te, hmanraw chi dang nena khaikhin dan te, leh khawvel tak tak lifting operation-a personnel leh assets humhalhna atana he safety margin hi a pawimawh chhan te a sawifiah a ni.
A safe service life pelh tawh lifting sling chu hlauhawm tak a ni—hmanraw a ni lo. Mahse, rigging professional tam tak chuan zawhna awlsam tak an nei a, chu chu ka lifting slings hi eng chen nge ka thlak tur? A chhanna chu number pakhat chauh a ni lo. Material chi, hman tam dan, hnathawh dan leh enfiahna atanga thil hmuhchhuah te a innghat a ni. He kaihhruaina hian industry standard (ASME B30.9, EN 1492), siamtu kaihhruaina, leh Lishenflex-in thil siamna lama a tawnhriat te hmangin thlak danglamna tur tehfung chiang tak a pe a ni. Sling type, inspection frequency, retirement signs, leh 'age-based' leh 'condition-based' replacement inkara critical distinction hmangin service life beisei chu kan cover a ni.