Ibipimo ngenderwaho bya EN877 ni imiterere n'uburyo bwo gupima imiyoboro y'icyuma gishongeshejwe n'ibikoresho byo gukurura amazi mu buryo bw'ikoranabuhanga. EN877: 2021 ni ivugurura n'uburyo bwo kunoza ibintu hashingiwe kuri EN877: 1999. Ingano y'umurambararo w'amazi ikoreshwa ni kuva kuri DN 40 kugeza kuri DN 600 (harimo), kandi icyuma gishongeshejwe kirimo icyuma cy'umukara n'icyuma gishongeshejwe.
Ibikenewe ku bikoresho ni byinshi kandi byumvikana neza:
1.Icyiciro cya BS EN 877:1999+A1:2006: Yibanda cyane cyane ku cyuma cy'umukara.
2.EN 877:2021: Ikubiyemo ibikoresho bibiri: icyuma cy'umukara n'icyuma gikozwe mu buryo bwa ductile. Imiterere ya shimi, imiterere ya mekanike (nk'imbaraga zo gukurura, kurekura), imiterere ya metallografiya n'ibindi bisabwa kuri ibi bikoresho byombi byasobanuwe mu buryo burambuye kandi bunoze (bishingiye ku bipimo bishya by'ibikoresho nka EN 1561, EN 1563). Ibi bitanga uburyo bworoshye bwo guhitamo ibikoresho kandi bikerekana ko bihuye kandi bigakora neza.
Uburyo bwo guhuza ni ubugezweho kandi butandukanye:
1.BS EN 877:1999+A1:2006: Yibanda cyane cyane ku gakondoingingo z'isoko(bifunze n'udupfundikizo twa rubber cyangwa imvange y'icyuma gifunga icyuma).
2. EN877: 2021: Yagura cyane uburyo bwo guhuza, harimo:Inkingi z'ibice (zikiri ishingiro). Inkingi z'imashini (guhuza imiyoboro, gufunga, nibindi). Inkingi zisutswe.Ingingo zo mu bwoko bwa Flange.Ibipimo, ubushobozi bwo kwihanganira, ibisabwa mu mikorere n'uburyo bwo gupima buri bwoko bw'itumanaho byasobanuwe mu buryo burambuye. Ibi bigaragaza iterambere ry'ikoranabuhanga ryo guhuza ku isoko.
Ibisabwa mu mikorere ihamye kandi yuzuye,DINSEN izakomeza kuvugurura ibikubiye muri iyi nkuru.:
1. Kongera umuvuduko w'ikizamini cyo gufata amazi: Uburyo bushya bwo gupima busaba umuvuduko mwinshi kugira ngo harebwe imikorere yo gufunga ingingo mu gihe habayeho umuvuduko mwiza n'umubi.
2. Gukingira urusaku biba itegeko: Iri ni rimwe mu mpinduka zikomeye cyane. EN 877:2021 ivuga ko isuzuma ry’urusaku rw’imiyoboro n’ibikoresho byarwo ari itegeko (nk’uko bivugwa muri EN 14366) kandi ikagaragaza agaciro ntarengwa k’urusaku rw’imiyoboro rugomba kugerwaho (urugero: itandukaniro ry’umuvuduko w’urusaku rigaragara Dn,e,w ≥ 45 dB). BS EN 877:1999 ntabwo ifite ibisabwa kurengera urusaku.
3. Kurwanya inkongi: Ibisabwa kugira ngo umuntu arwanye inkongi bishobora kuvugururwa cyangwa bigasobanurwa neza kurushaho (nk'ibipimo ngenderwaho bya EN 1366).
4. Ingufu za mashini: Ibisabwa ku mikorere ya mashini ku miyoboro n'ibikoresho nk'ubudahangarwa bw'umuvuduko n'ubudahangarwa bw'ingaruka bishobora guhindurwa cyangwa bigasobanurwa neza kurushaho.
5. Ubudahangarwa ku ikoreshwa rya chimique: Ibisabwa bishobora kuvugururwa cyangwa bigasobanurwa mu buryo burambuye.
EN 877:2021 ni inyandiko imwe isanzwe ifite imiterere n'imvugo bisobanutse neza kandi bigezweho.
Igihe cyo kohereza: 21 Nyakanga-2025
