Amapayipi ensimbi atholakala yonke indawo ekwakhiweni kwesimanje nobunjiniyela, futhi okubaluleke kakhulu nokho okubalulekile kulawa amapayipi ensimbi ayisisekelo. Nakuba ingabonakali njengeso-njengamapayipi ensimbi asetshenziswa kumakhethini angaphambili odongeni, noma athwele ngokuqondile amandla amakhulu ekhebula lebhuloho{2}}amapayipi ensimbi ahlala, amapayipi ensimbi ayisisekelo "ayizinsika ezingabonakali" zalo lonke uhlelo lobunjiniyela, agcwalisa buthule imisebenzi ewumongo yokusekela, ukuxhuma, nokuzinza.
Umsebenzi oyinhloko wamapayipi ensimbi yesisekelo ukuthwala nokudlulisa amandla. Kungakhathaliseki ukuthi kusistimu yesisekelo senqwaba yesakhiwo-sokuphakama okuphezulu noma isisekelo sokukhweza sezinto zokusebenza ezinkulu, amapayipi ensimbi eyisisekelo asebenza njengezikhondakta zamandla. Isibonelo, ekwakhiweni-kwezisekelo zezakhiwo eziphakeme, izinqwaba zamapayipi ensimbi zivame ukushayelwa zijule phansi, zisebenzise izakhiwo zazo{4}}ezinamandla aphezulu ukuze kusabalaliswe imithwalo eqondile yesakhiwo ekujuleni, kwestrata ezinzile. Lokhu kuhlakanipha kwemishini "kokwenza okuningi ngonyawo oluncane" kwenza amapayipi ensimbi esisekelo abe into ebalulekile yokuxazulula izinselele zobunjiniyela njengezisekelo zenhlabathi ethambile nokusekelwa komgodi wesisekelo ojulile.
Emazingeni okuxhumana kanye nomhlangano, amapayipi ensimbi esisekelo ayisisekelo sokwakhiwa kwe-modular. Ubunjiniyela besimanje buphishekela ukusebenza kahle nokumiswa. Osayizi abamisiwe bepayipi lensimbi yesisekelo (ukucaciswa okujwayelekile njenge-DN100 ne-DN200) nokushisela kwayo nokuvuleka kwayo kuyenza ibe into encanyelwayo yamasistimu amapayipi, amafreyimu ensimbi yesakhiwo, kanye nezisekelo zesikhashana. Isibonelo, ezimbonini ze-petrochemical, amashumi ezinkulungwane zamapayipi ensimbi yesisekelo ashiselwa kahle ukuze akhe inethiwekhi yokudlulisa eyinkimbinkimbi. Ukunemba kokuhlangana kwepayipi ngalinye kuthinta ngokuqondile ukusebenza okuphephile kwalo lonke uhlelo.
Okuphawuleka nakakhulu ukuguquguquka okuguquguqukayo kwepayipi lensimbi yesisekelo. Ukuthuthuka kwesayensi yezinto ezisetshenziswayo kuye kwavela epayipini lensimbi lesisekelo se-carbon steel elivamile ukuze lifake ipayipi lensimbi elikhangayo (ukuvikela ukugqwala), ipayipi lensimbi engagqwali (lokumelana nokugqwala), kanye nepayipi lensimbi eliyinhlanganisela (lokwakha isisindo esincane). Ezisekelweni zenqwaba yamabhuloho awela-olwandle ezindaweni ezisogwini, amapayipi ensimbi angavimbeli amanzi olwandle{3}}anganweba impilo yawo yesevisi kusukela eminyakeni engu-20 kumapayipi ensimbi avamile ukuya ngaphezu kweminyaka engama-50. Kumanethiwekhi okushisisa amapayipi ezindaweni ezisenyakatho ezinokhahlo, ukufaka{7}amapayipi ensimbi agoqekile asusa ukulahlekelwa kwamandla ngesikhathi sokudlulisa ukushisa.
Ngokombono obanzi, amapayipi ensimbi esisekelo nawo abonisa ukusebenza kahle kwensiza. Uma kuqhathaniswa nezakhiwo zikakhonkolo, amandla amapayipi ensimbi aphezulu-kuya{2}}isilinganiso sesisindo sisho ukuthi kudingeka impahla encane ukuze kuzuzwe umthwalo ofanayo{3}}nezidingo zokuthwala. Ukuphinda kusetshenziswe kabusha kwayo kuhambisana nefilosofi yentuthuko esimeme yobunjiniyela besimanje. Ngokwezibalo, amathani angaphezu kwezigidi eziyi-100 zamapayipi ensimbi agaywa kabusha futhi asetshenziswa kabusha emhlabeni wonke unyaka nonyaka. Lo mjikelezo "osuka kobunjiniyela, ubuyele ebunjiniyela" uyisizathu esiyisisekelo sokuthi kungani ipayipi lensimbi yesisekelo lihlale lidumile amakhulu eminyaka.
Nakuba sithanda ukuphakama kwezakhiwo eziphakeme noma ubuhle{0}}bamabhuloho awela ulwandle, akufanele sikhohlwe isisekelo samapayipi ensimbi agqitshwe ekujuleni komhlaba noma afihlwe ngaphakathi kwezakhiwo ngokwazo. Lawa "ngamadoda athule" onjiniyela, asekela ukukhula okukhuphukayo kwempucuko yabantu ngamandla abo nokuqina. Esikhathini esizayo esibonakalayo, ngokuthuthuka kobuchwepheshe bokuqapha obuhlakaniphile (njengezinzwa ze-fiber optic ezishumekwe kumapayipi ensimbi), amapayipi ensimbi ayisisekelo azoguqukela{3}}ezingxenyeni ezihlakaniphile eziqaphelayo, aqhubeke nokubhala isahluko esisha endimeni yawo njengetshe legumbi lobunjiniyela.
