EN877 standard inotsanangura zvinodiwa pakushanda kwemapaipi esimbi akakandwa, zvigadzikouyezvinobatanidza zvavoinoshandiswa muhurongwa hwekubvisa mvura inokwevera pasi muzvivakwa.EN877:2021ndiyo vhezheni yazvino ye standard, ichitsiva EN877:2006 version yapfuura. Misiyano mikuru pakati peshanduro mbiri idzi maererano nekuyedza ndeiyi inotevera:
1. Chiyedzo chekuedza:
EN877:2006: Inonyanya kuyedza hunhu hwemakanika uye hunhu hwekuvhara mapaipi nezvibatiso.
EN877:2021: Zvichibva pabvunzo yekutanga, zvakawedzerwa zvinodiwa zvebvunzo zvekushanda kwekudzivirira ruzha, kuramba ngura nemakemikari, kuramba moto nezvimwe zvinhu zvehurongwa hwemapaipi.
2. Nzira dzekuyedza:
EN877:2021 inovandudza dzimwe nzira dzekuyedza kuti dzive dzesainzi uye dzine musoro, dzakadai se:Kuedza kwekudzivirira ngura nemakemikari: Mhinduro itsva dzekuedza uye nzira dzekuyedza dzinoshandiswa, dzakadai sekushandisa pH2 sulfuric acid solution pachinzvimbo che hydrochloric acid solution yekutanga, uye kuwedzera bvunzo dzekudzivirira ngura kune mamwe makemikari.
Kuedza kushanda kweacoustic: Zvinodiwa zvekuedza zvakawedzerwa kuti pave nekushanda kwekudzivirira ruzha rwepaipi, zvakaita sekushandisa nzira yekumanikidza ruzha kuyera kudzivirira ruzha rwepaipi.
Kuedza kushanda kwemoto: Zvimwe zvinodiwa pakuedza kushanda kwepombi kuti isatsvedze moto, zvakaita sekushandisa nzira yekudzivirira moto kuyedza kushanda kwepombi kana paine moto.EN877:2021 inoshandisa pendi ine giredhi A1 rinodzivirira moto
3. Zvinodiwa pabvunzo:
EN877:2021 yakawedzera zvinodiwa zvebvunzo kune zvimwe zviratidzo zvekushanda, zvakaita se:Simba rekudhonza: rakawedzera kubva pa150 MPa kusvika pa200 MPa.
Kureba: kwakawedzera kubva pa1% kusvika pa2%.
Kudzivirira ngura nemakemikari: Zvinodiwa zvekudzivirira ngura zvinowedzera kune zvimwe zvinhu zvemakemikari, zvakaita sekudzivirira ngura kune zvinhu zvealkaline zvakaita sesodium hydroxide nepotassium hydroxide.
4. Mushumo wekuyedza:
EN877:2021 ine zvinodiwa zvakasimba pane zviri mukati uye fomati yemushumo wekuyedza, zvakaita se:Zvinoda kuti mushumo webvunzo uise ruzivo rwakadzama rwakadai senzira dzekuyedza, mamiriro ebvunzo, mhedzisiro yebvunzo, uye mhedziso.
Mushumo webvunzo unofanirwa kuburitswa nesangano rine hunyanzvi hwekuongorora. Semuenzaniso,DINSEN ine chitupa cheCASTCO.
Mwero weEN877:2021 wakazara uye wakaoma mukuyedza kupfuura mwero weEN877:2006, zvichiratidza kufambira mberi kwetekinoroji yazvino uye zvinodiwa pamusika muindasitiri yemapombi esimbi. Kushandiswa kwemwero mutsva kuchabatsira kuvandudza mhando yezvigadzirwa zvemapaipi esimbi uye kukurudzira kuchengetedzeka nekuvimbika kwemasisitimu emvura ekuvaka.
EN877:2021 vs EN877:2006
Nguva yekutumira: Kurume-17-2025
