Video: Cov duab twg yog siv rau daim ntawv NFPA 704?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Plaub ntu multicolor "square-on-point" ( pob zeb diamond / daim ntawv ) yog siv los hais txog kev noj qab haus huv, flammability, instability thiab tshwj xeeb kev phom sij uas tshwm sim los ntawm lub sij hawm luv luv, mob tshwm sim uas yuav tshwm sim thaum hluav taws kub, nchuav los yog lwm yam xwm txheej zoo sib xws.
Tsis tas li ntawd, daim ntawv 704 yog dab tsi?
The NFPA 704 Pob zeb diamond ("NFPA Pob Zeb" lossis "hluav taws kub pob zeb") yog tus qauv daim ntawv uas. txheeb xyuas cov tshuaj lom neeg muaj kev phom sij ntawm qhov chaw ruaj khov, xws li cov chaw tsim khoom, cov tsev khaws khoom, cov tso tsheb hlau luam, thiab cov chaw cia khoom.
Ib sab saum toj no, NFPA 704 cov cim qhia koj li cas? TIAB SA 704 yog ib daim ntawv sau npe siv los txheeb xyuas cov khoom phom sij. Nws yog luam tawm los ntawm National Fire Protection Association ( NFPA ). TIAB SA 704 yog ib qho kev sau npe ntxiv tshwj xeeb rau cov neeg muaj xwm txheej ceev, txawm tias lwm tus neeg ua tau nyeem thiab tau txais txiaj ntsig los ntawm cov ntawv no hauv kev ua haujlwm ib txwm muaj.
Kuj kom paub yog, qhov twg NFPA 704 placards xav tau?
Yam tsawg kawg nkaus daim ntawv yuav tsum tau muab tso rau ntawm ob phab ntsa sab nrauv ntawm ib qho chaw lossis lub tsev, txhua qhov nkag mus rau ib chav lossis thaj chaw, lossis txhua tus thawj tswj hwm txoj kev nkag mus rau qhov chaw cia sab nrauv. Tshooj 4.3 ntawm TIAB SA 704 muab kev taw qhia ntawm qhov chaw rau kev tshaj tawm.
Daim duab thiab qhov loj ntawm daim ntawv yog dab tsi?
Lawv ua tau raws li kev tsim qauv thiab kev ua haujlwm ruaj khov - daim ntawv yuav tsum tau luam tawm nyob rau hauv lub square-on-point configuration ntsuas 250 mm ntawm tag nrho cov sab thiab muaj xws li ib tug ruaj khov ciam teb uas yog kwv yees li 12.7 hli ntawm ntug ntawm lub daim ntawv . Tus naj npawb ntawm kev phom sij nyob rau hauv qab kaum ntawm lub daim ntawv yuav tsum ntsuas tsawg kawg yog 41 mm.
Pom zoo:
Dab tsi yog cov xim muaj nyob rau hauv daim ntawv qhia kev phom sij rau kev noj qab haus huv hauv NFPA 704?
NFPA 704 pob zeb diamond kos npe siv los tso saib cov ntaub ntawv no muaj plaub ntu xim: xiav, liab, daj, thiab dawb. Txhua ntu yog siv los txheeb xyuas ib pawg sib txawv ntawm qhov muaj peev xwm txaus ntshai. Ntu xiav ntawm NFPA xim code cim qhia txog kev phom sij rau kev noj qab haus huv
Txoj kev faib cov ntaub ntawv twg muab cov ntaub ntawv sib npaug ntawm cov ntaub ntawv lossis cov kev tshuaj xyuas hauv txhua chav kawm cov ntaub ntawv?
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