NTSB Ohio train derailment report points to overheated wheel

Tsoom Fwv Teb Chaws cov tub ceev xwm rau hnub Thursday tau taw qhia rau lub log hnyav dhau ntawm lub tsheb ciav hlau Norfolk Southern uas derailed thiab tso tawm cov tshuaj lom neeg ua ntej lub hlis no hauv Ohio.

cov cov ntawv ceeb toom ua ntej los ntawm National Transportation Safety Board tsis tau muab qhov tseeb ua rau East Palestine, Ohio, derailment tab sis tau piav qhia txog ntau yam kev txhawj xeeb txog kev ua haujlwm.

"Kev soj ntsuam vis dis aus los ntawm ib lub tsev nyob hauv zos tau pom tias qhov tshwm sim yog lub log bearing nyob rau theem kawg ntawm overheat tsis ua hauj lwm lub sij hawm ua ntej derailment," tsab ntawv ceeb toom tau hais. "Lub log bearing thiab cuam tshuam wheelset tau raug sau ua pov thawj thiab yuav raug tshuaj xyuas los ntawm NTSB."

Kev tshawb nrhiav yav tom ntej yuav tsom mus rau lub wheelset thiab bearing, tank tsheb tsim thiab tu cov txheej txheem, derailment puas, kev soj ntsuam kev coj ua thiab tshuaj xyuas cov lus teb kev sib tsoo.

Thaum txog 9 teev tsaus ntuj nyob rau lub Ob Hlis 3, lub tsheb ciav hlau sab hnub tuaj Norfolk Southern freight tsheb ciav hlau derailed, suav nrog 11 lub tsheb tank nqa cov khoom phom sij uas tom qab ntawd kub hnyiab. Cov tshuaj no suav nrog cov tshuaj vinyl chloride, uas yog cov kab mob carcinogen uas muaj hluav taws kub heev. Peb caug-yim railcars derailed nyob rau hauv qhov xwm txheej, raws li NTSB report.

Raws li tsab ntawv ceeb toom, lub tsheb ciav hlau tau mus txog 47 mais toj ib teev thaum lub sij hawm derailment, qis dua qhov ceev txwv ntawm 50 mais ib teev. Lub tsheb ciav hlau txoj kev tsheb ciav hlau zoo, nyob rau hauv qhov chaw los tiv thaiv over-speed derailments, tau khiav hauj lwm thaum lub sij hawm derailment.

Tom qab lub tsheb ciav hlau hla lub tsheb ciav hlau tsis zoo, nws tau tshaj tawm xov xwm ceeb toom qhia cov neeg coob kom nres lub tsheb ciav hlau los tshuaj xyuas lub qag kub. Lub tsheb ciav hlau Norfolk Southern tau nruab nrog lub tshuab ntsuas kub kub, tsim los xyuas cov kabmob overheated.

Thaum lub sij hawm lub tsheb ciav hlau raug qhia kom nres, tus kabmob qhov kub thiab txias tau kaw qhov kub ntawm 253 degrees kub dua li qhov kub thiab txias, siab tshaj qhov pib ntawm 200 degrees ntawm qhov kub ntawm qhov ntsuas kub yog qhov tseem ceeb, raws li Norfolk Southern cov txheej txheem. Ntawm qhov ntsuas yav dhau los, nws tau kaw qhov kub ntawm 103 degrees saum toj no qhov kub thiab txias. Daim ntawv tshaj tawm hais tias qhov kub ntawm 170 txog 200 degrees yuav tsum tau nres.

Ib cheeb tsam kev khiav tawm ib mais tau ua tiav tom qab lub derailment, cuam tshuam txog li 2,000 tus neeg nyob hauv.

Ob hnub tom qab lub derailment, qhov kub thiab txias tau nce ntxiv nyob rau hauv tsib ntawm lub derailed tank tsheb nqa 115,580 nkas loos ntawm vinyl chloride. Vim tias qhov muaj peev xwm ntawm kev tawg loj heev uas tuaj yeem xa cov shrapnel mus txog ib mais, Norfolk Southern tau ua ib qho. tswj kev tso tawm peb hnub tom qab.

Tsis muaj neeg tuag los yog raug mob.

Norfolk Southern CEO Alan Shaw hais rau CNBC hauv kev xam phaj uas tshaj tawm hnub Tuesday nws ntseeg tias nws muaj kev nyab xeeb rau tsev neeg kom rov qab mus rau East Palestine. Cov tub ceev xwm tau tshaj tawm tias huab cua muaj kev nyab xeeb thiab lub nroog cov dej tsis muaj kev phom sij ntawm cov kab mob.

"Peb lub hom phiaj tam sim no yog kev kho ib puag ncig, tu lub xaib no, kev saib xyuas huab cua txuas ntxiv, saib xyuas dej, kev pab nyiaj txiag rau cov neeg nyob hauv zej zog, thiab nqis peev hauv zej zog kom cov zej zog nyob rau sab hnub tuaj Palestine tuaj yeem vam meej," Shaw hais.

Txawm li cas los xij, cov neeg nyob hauv txuas ntxiv qhia qhov tsis ntseeg. Ohio tau qhib lub tsev kho mob rau hnub Tuesday los hais txog cov lus tshaj tawm txog kev mob taub hau, xeev siab thiab pob khaus hauv zej zog, thiab qee cov neeg nyob hauv muaj qhia txog qaib thiab ntses tuag nyob ze ntawm qhov chaw. Ntau tus neeg nyob hauv uas tau khiav tawm lawv lub tsev muaj foob ​​Norfolk Southern.

Hnub Tuesday, Lub Chaw Tiv Thaiv Ib puag ncig yuam Norfolk Southern los tuav thiab them nyiaj rau txhua qhov kev tu huv.

Shaw hais rau CNBC tias Norfolk Southern tau them rov qab lossis cog lus $ 6.5 lab rau East Palestine thiab yuav txuas ntxiv muab kev pabcuam nyiaj txiag rau cov neeg nyob hauv.

Lub nroog tau dhau los ua qhov tseem ceeb ntawm kev nom kev tswv tom qab yav dhau los Thawj Tswj Hwm Donald Trump, uas yog Republican, tau mus ntsib hnub Wednesday kom ntsib nrog cov neeg teb thawj zaug thiab cov thawj coj xaiv tsa hauv zos. Trump, uas yeej Ohio xyoo 2016 thiab 2020, qhia tias Biden cov thawj coj tau qhia "kev tsis quav ntsej thiab kev ntxeev siab" hauv kev teb rau qhov teebmeem - ntxiv rau kev txhawb nqa nws lub npe-cov dej.

Trump tsis tau hais txog hnub Wednesday nws cov thawj coj hauv 2018 tau tshem tawm txoj cai 2015 Obama-era yuav tsum advanced braking technology ntawm cov tsheb ciav hlau thauj cov khoom phom sij lossis cov nplaim taws.

Daim ntawv tshaj tawm hnub Thursday los txog tib hnub uas Tus Tuav Tsav Tsheb Thauj Mus Los Pete Buttigieg mus xyuas qhov chaw. Buttigieg xa ib tsab ntawv Hnub Sunday rau Norfolk Southern, ceeb toom tias lub tuam txhab yuav tsum "ua kom pom kev tsis txaus ntseeg rau cov neeg" ntawm East Palestine.

Buttigieg tau tawm tsam los ntawm Republican cov nom tswv rau nws cov lus teb rau qhov kev kub ntxhov. Sen. Marco Rubio, R-Fla., tau hu rau Buttigieg kom tawm haujlwm lossis raug rho tawm haujlwm rau "qib tag nrho ntawm kev tsis muaj peev xwm thiab tsis txaus siab." Buttigieg lees paub hauv a Kev xam phaj CBS News Hnub Tuesday tias nws "yuav tau hais sai dua txog qhov kuv xav tau zoo li cas txog qhov xwm txheej no."

National Transportation Safety Board Chairwoman Jennifer Homendy thiab Director of the NTSB's Office of Railroad, Pipeline and Hazardous Materials Robert J. Hall yuav tuav lub rooj sib tham rau hnub Thursday yav tav su ntawm lub koom haum Washington, DC lub hauv paus chaw haujlwm.