A safiyar ranar 5 ga Satumba, 2008, an kira mai aikin famfo zuwa A-1 Mushroom Substratum Ltd. a Langley, British Columbia. Wannan shi ne karo na biyu a cikin 'yan kwanaki. A can, ya gano cewa bututun shigar da ke kasan rumbun famfo ya toshe gaba daya…
A safiyar ranar 5 ga Satumba, 2008, an kira mai aikin famfo zuwa A-1 Mushroom Substratum Ltd. a Langley, British Columbia. Wannan shi ne karo na biyu cikin ‘yan kwanaki. A can, ya gano cewa bututun shigar da ke kasan rumfunan famfo ya toshe gaba daya, kuma ya sanar da mai kula da wurin takin naman kaza cewa ana bukatar wani kamfani da ya kware wajen yin famfo.
Maimakon haka, a ƙarƙashin jagorancin mai kulawa, ma'aikata biyu sun yi ƙoƙari su kawar da toshewar bawul ɗin malam buɗe ido a cikin bututun. A cikin 'yan dakiku na bude flange, wani ma'aikaci ya fadi a cikin ruwa a kasan rumfar, wanda aka yi imani da shi. saboda fitowar iskar hydrogen sulfide (H2S) ba zato ba tsammani a cikin yanayin da ba shi da iskar oxygen. Zai mutu.
A cikin 'yan mintoci kaɗan masu zuwa, masu ceto biyu masu yiwuwa daga masana'antar shuka namomin kaza da naman gwari masu yawa za su sami irin wannan rabo. Sauran ma'aikata biyu - da sa'a-za su sha wahala kusa da mutuwa, lalacewar kwakwalwa da ba za a iya jurewa ba.
A cikin rahoton binciken da aka fitar a karshen watan Nuwamba, WorkSafeBC zai nuna jerin gazawa a cikin zane, gini da kuma aiki na kayan aiki. Kwamitin gudanarwar ya bayyana cewa binciken na iya zama "mafi rikitarwa a tarihin WorkSafeBC. ” “Za a ɗauki watanni kafin a ziyarci mahimman wuraren aikin; zai ɗauki watanni da yawa don cikakken fahimtar hanyoyin masana'antu da abubuwan da suka faru a cikin shekaru biyar. Jerin abubuwan da suka faru da kuma yanke shawara da suka zo cikin lokaci.q
A wannan ranar na Satumba, wasu ma'aikata biyu suna ƙoƙarin cire bututun da aka toshe a cikin rumbun famfo, yayin da mai kula da su ke lura da shi daga tsayin kusan mita uku daga ƙofar ginin. cm a kasan rumbun, an cire ƙwanƙwasa ƙwanƙwasa 8 daga flange na bawul, kuma an saka sabbin kusoshi 4 a hankali don riƙe bawul ɗin a wurin.
Da misalin karfe 5 na yamma, daya daga cikin ma’aikatan ya yi amfani da na’urar sikeli don fitar da saman flange daga bawul din, sannan ya yi amfani da wani na’urar sukudireba don cire bambaro, sludge da sauran kayan da ke makale a bawul.” Wani karamin ruwa ya fara fita waje. , ” rahoton binciken WorkSafeBC a Richmond, British Columbia ya lura.
Lokacin da ma’aikacin ya cire bambaro, sai ya kai kara ga mai kula da warin, wanda hakan ya sa ma’aikacin ya bar ma’aikacin ya bar rumfar.
Ma'aikacin da ke bawul ya ɗauki mataki sannan ya faɗi ƙasa a cikin ruwa da sludge. Mai kulawa ya hau ƙasa ya taimaki ma'aikaci na biyu ya goyi bayan ma'aikacin da bai amsa ba ya zauna a jikin bangon da aka zubar. Daga nan sai mai kulawa ya kira maigidan don taimakon gaggawa. .
Lokacin da ma’aikatan lafiya suka isa wurin da misalin karfe 5:20 na yamma, sun gano cewa mai kula da wajen gidan ya rasa hanyarsa kuma yana fama da matsalar numfashi.” Ma’aikatan motar daukar marasa lafiya sun lura da warin da ba su da dadi, suka yi zargin yanayi mai hadari, kuma suka yanke shawarar ja da baya daga wurin. yankin da aka zubar,” WorkSafeBC ta ruwaito, tare da hana sauran ma’aikatan da suka isa da tsani shiga rumfar.
Gabaɗaya, ma'aikata biyar daga kamfanoni uku waɗanda suka haɗa da wurin sarrafawa-A-1 Mushroom Substratum, HV Truong Ltd. (kamfanin girma na naman kaza) da Farmers' Fresh Mushrooms Inc. (kamfanin marufi da tallace-tallace) an cire su daga mafaka .Ut Van Tran, 35, Chi Wai Chan, 55, da Han Duc Pham, 47, sun mutu; Tchen Phan har yanzu yana kan keken guragu kuma Michael Phan yana cikin suma.
Rahoton WorkSafeBCos ya nuna gazawa da yawa: rashin tsarin OH&S akan wurin; gazawar gyara yanayin anaerobic (anaerobic) da aka samar a cikin tankin tsari wanda ke fitar da ruwa ta cikin bututun, yana haifar da tarin H2S a cikin bututun shiga; rashin kariya daga daskararrun da ke shiga bututun Injiniyan sarrafawa; rashin bin ka'ida; kasawa a cikin ƙira, gini, da aiki da kayan aiki tun 2004.
Daraktan Bincike na WorkSafeBC Jeff Dolan ya ce: pMun gane cewa dole ne waɗannan iyalai su jira dogon lokaci don ƙarin koyo game da abin da ya faru da ƙaunatattun su. An fahimci dalilan.”, in ji sanarwar.
A cikin watan Agusta 2010, A-1 Mushroom Substratum, HV Truong, da kuma 4 mutane sun karbi 29 kiwon lafiya da kuma aminci zargin. amincin ma'aikata; baiwa ma'aikata bayanai, jagora, horo da kulawa; da kuma tabbatar da cewa an kawar da ko rage hadurran da ke tattare da wuraren da aka killace da kuma gudanar da ayyukan da suka danganci tsaro cikin aminci.
Hukuncin da aka yanke a watan Nuwamban da ya gabata ya ƙare da tarar $200,000 ga A-1 naman kaza Substratum (yanzu fatara), $120,000 na HV Truong, da $15,000, 10,000, da $5,000 ga ukun.
Raj Chouhan, wani mai sukar jam'iyyar New Democratic Party of British Columbia, yana daya daga cikin mawakan da ke neman a yanke musu hukunci mai tsauri.Chouhan ya bayyana hukuncin karshe a matsayin mari a wuyan hannu. Ya bayar da rahoton cewa ptese iyalai da gaske suna fatan samun abin da zai taimaki sauran iyalai da sauran ma'aikata daga gare ta.q
Don bayyana yanayin da ya haifar da mummunan lamarin, ana buƙatar yin la'akari da tsarin takin namomin kaza a cikin kayan aiki.A cikin samfurin wasan kwaikwayo na 3-D, WorkSafeBC ya nuna cewa an gina tsarin bututun don samar da ruwa mai tsabta da sarrafa ruwa. daga babban tankin ruwa mai zaman kansa a cikin shingen shinge.Sa'an nan ana zubar da ruwa mai gauraye ta hanyar bututu; da farko a cikin kwandon takin, sannan a fesa a kan tulin takin mai dauke da bambaro, takin kaji da gypsum na noma.
Duk da haka, saboda al'amurran da suka shafi aiki da raguwar samar da takin, tankunan ruwa da wuraren da aka rufe suna cike da ruwa mai sarrafawa, bambaro da sludge. Don hana famfo da bututu daga daskarewa a lokacin hunturu, an gina rumbun a kan bangon kayan aiki a cikin 2007.
Har ila yau abin da ya dace shine ƙira da gina tsarin tsarin zagayawa na ruwa, wanda ke jawo ruwa mai sarrafawa daga kasan tanki zuwa cikin bututun shiga. Rahoton WorkSafeBC ya bayyana cewa hakan ya haifar da toshewa da yanayin anaerobic a cikin tsarin bututun.
Rahoton ya kammala da cewa: Tun da bambaro da sludge sun zauna a kasan tankin, to babu makawa wadannan kayan za su shiga bututun su toshe magudanar ruwa ko kuma su yi toshewa.q
Haɗe tare da rage buƙatar aiwatar da ruwa - garin Langley ya rufe rumbun ajiyar takin a ƙarshen 2007 saboda keta dokokin - wannan yana nufin cewa ruwan da ke shiga tsarin ya daɗe, kuma ana rage yawan kwarara ta cikin bututun kuma yana ƙaruwa Don magance matsalar. damar, haɓakar ruwa yana tsayawa kuma yana tallafawa ayyukan anaerobic.
Rahoton ya bayyana cewa: pAbin da ya sa matsalar ta fi muni shi ne rashin hanyar da za ta inganta zagayawa da kuma cakuduwar kowane ruwa mai iskar oxygen da ke shiga cikin tankin [tsari] tare da tara ruwa, sludge da daskararru a kasan tanki."
Les Mackoff, lauyan da ke kare wadanda ake tuhuma, ya ce masu wannan kamfani suna aiki tare da wadannan mutane a kowace rana kuma suna jin tsoron faruwar hakan.
Mackoff ya ruwaito cewa kafin wannan mummunan lamarin, maigidan ya dauki hayar masana kuma ya nemi shawarar injiniya game da yadda za a shigar da na'urorin lantarki don taimakawa wajen rage yiwuwar wari. Duk da haka, ya nuna cewa "ginin yana da matsala. Cibiyar ta sami matsala sosai."
Neil McManus ƙwararren masani ne mai tsaftar masana'antu daga Lafiya da Tsaro na Ma'aikata na Arewa maso Yamma a Vancouver. Ya ce ra'ayinsa shine injiniyoyi suna kula da lafiyar ma'aikata saboda "tsararrun su suna haifar da yanayin aiki da ke shafar wasu."
McManus ya ce bisa kwarewarsa, yawancin ayyukan takin suna da famfunan da za a iya cirewa da kuma famfunan cirewa.
David Nguyen, kwararre a fannin kiwon lafiya da kare lafiyar aikin gona a kungiyar kare lafiyar gona da kiwo (FARSHA) a Langley, British Columbia, ya ce lamarin "ya bude idanun kowa a wannan masana'antar." .Nguyen ya ruwaito cewa ya ziyarci wurin aiki kuma yana aiki tare da masu daukar ma'aikata bayan faruwar lamarin don inganta lafiya da tsaro da suka shafi aiki.
Ya ce al'amurran injiniya matsala ne, amma ya kara da cewa yana tunanin wasu abubuwa kamar matakan rigakafi a kusa da iyakokin sararin samaniya, gano haɗari, da kuma kula da bayyanar cututtuka na iya taimakawa wajen hana hatsarori.
Karatun waɗannan alamun na iya taimakawa wajen hanawa.Kusan watanni biyu kafin wannan rana mai muni, a ranar 15 ga Yuli, 2008, Kwamitin Binciken Masana'antu na Kolumbia ta Burtaniya ya sami korafe-korafe daga ɗan majalisar gari Charlie Fox da matarsa game da wari da sharar ruwa daga aikin takin.
Garin ya fara shari'a, inda aka rufe ginin a karo na biyu. A gaskiya ma, an shirya zaman kotun na kararraki na biyu kwanaki uku bayan hadarin.
"Mummunan bala'in ya faru ne a inda muka san warin ya fito, domin a zahiri wani rami ne da ba a rufe ba," in ji Fox." tankuna."
McManus ya ruwaito cewa kasa da shekara guda bayan faruwar lamarin Langley, ya ziyarci wata gonar naman kaza a British Columbia, inda ya ga irin wannan "hanyar aiki" kuma ya sami "mai girma mai ban mamaki" a tashar famfo. "H2S.
"Dole ne mu bar wurin nan da nan," in ji shi. "Kafin canjin, kamshin ba shi da komai. Hancina ya gaya mani cewa akwai H2S a nan, kuma na duba ban ga wasu canje-canje don bayyana abin da ke faruwa ba. Wannan shine famfo. Muna iya ganin kumfa a kasa, ”in ji McManner.
Ya yi hasashe cewa "kumfa mai yawo sama da ruwa na iya ɗaukar aƙalla yanayi na matsin lamba", wasu daga cikinsu na iya zama H2S. Don haka idan ka kama kwayoyin H2S a cikin kumfa a cikin wani ruwa mai kauri, sannan ka shafa masa wani karfi mai tsafta sannan ka sako ruwan, to kumfa na da maganin An fitar da shi,” in ji shi. dalilin mutuwar, ba su sami komai ba."
Rahoton WorkSafeBCos ya bayyana cewa lokacin da shugaban kashe gobara na garin townos ya auna iskar da ke cikin rumfar da misalin karfe 5:30 na yamma, sinadarin hydrogen sulfide ya kai kashi 36 a kowace miliyan (ppm) kuma abun da ke cikin iskar oxygen ya kai kashi 15% – ya yi yawa kuma ya yi yawa, bi da bi. Low.Bayan mintuna 22 kawai, abun ciki na iskar gas ya ragu zuwa 6 ppm, kuma abun cikin oxygen na yau da kullun shine 20.9%.
Wadannan ƙididdiga sun bambanta da ƙididdigar WorkSafeBC akan Janairu 29, 2009 (watanni biyar bayan haka), lokacin da aka cire bawul kuma an auna iskar da ke cikin bututun da ke ƙasa da bawul. mai saka idanu), yana nuna cewa yanayin anaerobic a cikin bututun na iya haifar da abun ciki na H2S ya isa ya haifar da rashin sani da mutuwa cikin sauri, q rahoton binciken ya lura.
Me yasa daya ma'aikaci a cikin rumfar ya kasa amsawa cikin 'yan dakiku bayan fitowar H2S kuma daga baya ya mutu, yayin da ɗayan ya tsira?
"Lokacin da kuka kalli tsaftar sana'a, ba kowa ba ne ke shafar abubuwa iri ɗaya ta hanya ɗaya," in ji Shirley Gray, ƙwararriyar tsaftar sana'a a Sashen Kwadago da Ilimi na Nova Scotia a Halifax Say. "Akwai masu shan taba da yawa. can. Ba kowa ba ne zai kamu da cutar kansar huhu,” Gray ya ba da misali.
Ta ce abubuwan da za su iya shafar martani ga fallasa sun hada da samun iska, kusanci zuwa wurin sakin, da yawan numfashi. fita.
Grey ya ba da rahoton cewa duk iskar gas za su maye gurbin oxygen, amma don yin wannan, dole ne a mayar da hankali sosai. "Don maye gurbin 1% na iskar oxygen, dole ne ku sami babban taro," in ji ta, kodayake wani yiwuwar na iya zama iskar oxygen. Scavenger, "haƙiƙa yana ɗaure iskar oxygen kuma yana ɗauke da shi daga sararin samaniya."
McManus ya ce a cikin kashi 15% na iskar oxygen, "ba za ku yi wani tasiri mai tsanani ba kan yuwuwar mutane." "Wannan shine dalilin da ya sa mai yiwuwa H2S ya yi haka," in ji shi.
Wadannan mutuwar sun sa New Democrats na Vancouver da British Columbia Federation of Labour (BCFL) yin kira akai-akai don gudanar da bincike kan mai binciken.Cif Coroner Lisa Lapointe ya amsa kiran a watan Disambar bara.
"Bayan nazarin duk bayanan da ake da su a cikin lamarin, ciki har da rahoton WorkSafeBCos, [Lapointe] ya kammala da cewa zai kasance da amfani a gudanar da bincike don nazarin wasu faffadan yanayin lamarin don hana mutuwa nan gaba a irin wannan yanayi. “Sanarwa daga British Columbia Coroner Service, hedkwata a Vancouver, ta bayyana. A yayin binciken da aka shirya fara a ranar 7 ga Mayu, babban jami’in binciken Norm Liebel da alkalan kotun za su saurari shaida daga shaidu da dama.
Raj Chouhan na New Democratic Party ya ce yana fatan wasu shawarwari "za su iya taimaka mana mu hana irin wannan bala'i a nan gaba."
Shugaban BCFL Jim Sinclair shi ma ya yi maraba da binciken lardi kuma ya nuna a cikin wata sanarwa cewa ya haifar da kyakkyawan fata na tsaro ga gonaki a British Columbia.q
Rahoton WorkSafeBC ya bayyana cewa kafin faruwar lamarin, babu wanda ya damu da yuwuwar ci gaban yanayin anaerobic a cikin bututun da ke zama wani bangare na tsarin dawo da ruwa, koda kuwa sauran tsarin sun kasance aerobic.q
Rahoton ya kara da cewa, "Ko da yake masana'antu da hukumomin da suka dace sun fahimci cewa samar da iskar iskar gas ne ta hanyar wadannan ayyuka, wallafe-wallafen masana'antu sun fi mayar da hankali kan kariyar muhalli da kawar da wari, maimakon hadarin da ke haifarwa yayin samar da wadannan iskar gas," in ji rahoton.
Scott Fraser, darektan ayyukan FARSHA, ya yarda cewa kafin hatsarin, matakin wayar da kan illolin da ke tattare da aikin takin naman kaza yana da iyaka.” Lokacin da abin ya faru, ba na tsammanin wani ya san ainihin abin da ya faru ko adadin hydrogen. Sulfide da za a iya zubar da su daga waɗannan abubuwan," in ji Fraser.
Ya ce tun bayan faruwar lamarin, an raba rubutattun bayanai ga irin wadannan ayyuka, kuma an samar da tsarin kula da takin naman kaza.
Nguyen ya ce ma’aikata a masana’antar Langley suna magana da Vietnamese, kuma yana magana da Vietnamese a matsayin yarensa na biyu.” Mutanen da ke aiki a [noma] galibi baƙi ne na ƙarni na farko, don haka Ingilishi ba koyaushe yaren farko ba ne.”
Lokacin aikawa: Dec-23-2021
