Liquid nitrogen (LN2) imagwira ntchito yofunika kwambiri padziko lonse lapansi paukadaulo wothandizira kubereka, monga njira yopititsira ku cryogenic posungira zinthu zamtengo wapatali zamoyo, monga mazira, umuna, ndi miluza.Kupereka kutentha kotsika kwambiri komanso kuthekera kosunga umphumphu wa ma cell, LN2 imatsimikizira kusungidwa kwanthawi yayitali kwa zitsanzo zosavutazi.Komabe, kugwira LN2 kumabweretsa zovuta zapadera, chifukwa cha kutentha kwake kozizira kwambiri, kuchuluka kwachangu komanso zoopsa zomwe zingachitike chifukwa cha kusamuka kwa okosijeni.Lowani nafe pamene tikufufuza njira zofunika zotetezera chitetezo ndi njira zabwino zotetezera malo otetezedwa ndi ma cryo, ogwira ntchito yoteteza, komanso tsogolo la chithandizo cha chonde.
Haier Biomedical Liquid Nitrogen Storage Solution
Kuchepetsa Zowopsa pa Ntchito ya Cryogenic Room
Pali zoopsa zosiyanasiyana zomwe zimagwirizanitsidwa ndi kugwiritsira ntchito LN2, kuphatikizapo kuphulika, kupuma, ndi kutentha kwa cryogenic.Popeza kuchuluka kwa kuchuluka kwa LN2 kuli pafupifupi 1: 700 - kutanthauza kuti 1 lita imodzi ya LN2 idzasungunuka kuti ipange pafupifupi malita 700 a mpweya wa nayitrogeni - chisamaliro chachikulu chiyenera kutengedwa pogwira magalasi a galasi;thovu la nayitrogeni limatha kuswa galasilo, ndikupanga zing'onozing'ono zomwe zimatha kuvulaza.Kuphatikiza apo, LN2 ili ndi kachulukidwe ka nthunzi pafupifupi 0.97, kutanthauza kuti ndiyocheperako kuposa mpweya ndipo imasungunuka pansi pomwe kutentha kuli kotsika kwambiri.Kuwunjikaku kumabweretsa ngozi yopumira m'malo otsekeka, ndikuchepetsa mulingo wa okosijeni mumlengalenga.Zowopsa za asphyxiation zimakulitsidwanso ndikutulutsidwa mwachangu kwa LN2 kupanga mitambo yachifunga cha nthunzi.Kukumana ndi nthunzi wozizira kwambiri wotere, makamaka pakhungu kapena m'maso - ngakhale kwakanthawi kochepa - kumatha kubweretsa kuzizira, kuzizira, kuwonongeka kwa minofu kapena kuwonongeka kwamaso kosatha.
Zochita Zabwino Kwambiri
Chipatala chilichonse choberekera chimayenera kuwunika momwe chiwopsezo chikuyendera mkati mwa chipinda chake cha cryogenic.Malangizo amomwe mungachitire izi angapezeke m'mabuku a Codes of Practice (CP) ochokera ku British Compressed Gases Association.1 Makamaka, CP36 ndiyothandiza kulangiza za kusungirako mpweya wa cryogenic pamalopo, ndipo CP45 imapereka malangizo pa kapangidwe ka chipinda chosungiramo cryogenic. [2,3]
NO.1 Kamangidwe
Malo abwino a chipinda cha cryogenic ndi omwe amapereka mwayi wopezeka kwambiri.Kuganizira mozama za kuyika kwa chidebe chosungira cha LN2 kumafunika, chifukwa kudzafunika kudzazidwa ndi chombo chopanikizika.Moyenera, chotengera chamadzi cha nayitrogeni chamadzimadzi chiyenera kukhala kunja kwa chipinda chosungiramo zitsanzo, pamalo omwe mpweya wabwino ndi wotetezeka.Kwa zothetsera zazikulu zosungirako, chotengera choperekera nthawi zambiri chimalumikizidwa mwachindunji ndi chotengera chosungirako kudzera pa hose ya cryogenic transfer.Ngati makonzedwe a nyumbayo sangalole kuti chombo choperekera katunducho chipezeke kunja, chisamaliro chowonjezereka chiyenera kuchitidwa pakugwira ntchito ya nayitrogeni yamadzimadzi, ndipo kuwunika kwatsatanetsatane kumayenera kuchitidwa, kuphatikizapo kuyang'anira ndi kutulutsa machitidwe.
NO.2 Mpweya wabwino
Zipinda zonse za cryogenic ziyenera kukhala ndi mpweya wabwino, ndi machitidwe ochotsamo kuti ateteze mpweya wa nayitrogeni ndikuteteza ku kuchepa kwa mpweya, kuchepetsa chiopsezo cha kupuma.Dongosolo loterolo liyenera kukhala loyenera kwa mpweya wozizira kwambiri wa cryogenically, ndikulumikizidwa ndi njira yowunikira mpweya wa okosijeni kuti azindikire pamene mpweya wa okosijeni umatsika pansi pa 19.5 peresenti, momwemo udzayambitsa kuwonjezeka kwa kusintha kwa mpweya.Ma ducts amayenera kukhala pamtunda pomwe masensa otsika ayenera kuyikidwa pafupifupi mita imodzi kuchokera pansi.Komabe, malo enieni ayenera kuganiziridwa pambuyo pofufuza mwatsatanetsatane malo, chifukwa zinthu monga kukula kwa zipinda ndi masanjidwe ake zidzakhudza kuyika koyenera.Alamu yakunja iyeneranso kuikidwa kunja kwa chipinda, kupereka machenjezo omvera komanso owoneka kuti awonetsere ngati sikuli bwino kulowa.
NO.3 Chitetezo Payekha
Zipatala zina zimathanso kusankha kupatsa ogwira ntchito makina owunikira okosijeni ndikugwiritsa ntchito kachitidwe ka mabwenzi komwe anthu amangolowa m'chipinda chokhala ndi anthu awiriawiri, kuchepetsa nthawi yomwe munthu m'modzi amakhala mchipindamo nthawi iliyonse.Ndi udindo wa kampani kuphunzitsa ogwira ntchito kuzizira kusungirako ndi zipangizo zake ndipo ambiri amasankha kuti ogwira ntchito pa Intaneti nayitrogeni chitetezo maphunziro.Ogwira ntchito akuyenera kuvala zida zoyenera zodzitetezera (PPE) kuti adziteteze ku kupsa kwamphamvu, kuphatikiza zoteteza m'maso, magolovesi, nsapato zoyenera, ndi jasi la labotale.Ndikofunikira kuti ogwira ntchito onse aphunzire za momwe angathanirane ndi zilonda zamoto, ndipo ndi bwino kukhala ndi madzi ofunda pafupi kuti azitsuka pakhungu ngati wapsa.
NO.4 Kusamalira
Chombo choponderezedwa ndi chidebe cha LN2 chilibe magawo osuntha, kutanthauza kuti dongosolo lokonzekera lapachaka ndizomwe zimafunikira.Mkati mwake, mkhalidwe wa payipi ya cryogenic uyenera kuyang'aniridwa, komanso m'malo aliwonse ofunikira a ma valve otulutsa chitetezo.Ogwira ntchito ayenera kuyang'anitsitsa nthawi zonse kuti palibe malo omwe amazizira - kaya m'chidebe kapena m'chotengera chodyera - zomwe zingasonyeze vuto ndi vacuum.Poganizira mozama pazifukwa zonsezi, komanso ndandanda yokonza nthawi zonse, zotengera zopanikizika zimatha kukhala zaka 20.
Mapeto
Kuonetsetsa chitetezo cha chipinda chosungiramo kulira kwachipatala komwe LN2 imagwiritsidwa ntchito ndikofunikira kwambiri.Ngakhale kuti blog iyi yafotokoza zachitetezo chosiyanasiyana, ndikofunikira kuti chipatala chilichonse chiziwunika zomwe zingachitike mkati mwake kuti athane ndi zofunikira komanso zoopsa zomwe zingachitike.Kuyanjana ndi akatswiri opereka zosungirako zozizira, monga Haier Biomedical, ndikofunikira kuti mukwaniritse zosowa za cryostorage moyenera komanso mosamala.Poika chitetezo patsogolo, kutsatira njira zabwino kwambiri, komanso kugwirira ntchito limodzi ndi akatswiri odalirika, zipatala zoberekera zimatha kusunga malo otetezedwa, kuteteza ogwira ntchito komanso kugwira ntchito kwa zida zamtengo wapatali zoberekera.
Maumboni
1.Makhalidwe Otsatira - BCGA.Inafikira pa Meyi 18, 2023. https://bcga.co.uk/pubcat/codes-of-practice/
2.Code of Practice 45: Biomedical cryogenic storage systems.Kupanga ndi ntchito.Bungwe la British Compressed Gases Association.Idasindikizidwa pa intaneti 2021. Inafikira pa Meyi 18, 2023. https://bcga.co.uk/wp-
3.content/uploads/2021/11/BCGA-CP-45-Original-05-11-2021.pdf
4.Code of Practice 36: Kusungirako madzi a cryogenic pamalo a ogwiritsa ntchito.Bungwe la British Compressed Gases Association.Idasindikizidwa pa intaneti 2013. Inafikira pa Meyi 18, 2023. https://bcga.co.uk/wp-content/uploads/2021/09/CP36.pdf
Nthawi yotumiza: Feb-01-2024
