Rehabilitation of underground pipes and subterranean confined spaces through a process known as CIPP or "cured in place piping" is quickly gaining momentum around the world. Water, sewer, gas, and chemical pipelines and other subterranean systems with difficult accessibility can now be cleaned and resealed without digging up the entire system.
CIPP creates a pipe within a pipe and can be used in a system with as little as a 4 in. diameter. Much larger pipes, over 100 inches, can also be serviced using this method. Little or no digging is required in this environmentally friendly operation. The process involves resin-saturated polyester tube liners being inverted or pulled through a compromised or structurally unsound pipe. This liner can be inverted using water or air pressure.
Curing of the resin liner is accomplished using hot water, UV light, or steam and takes from five to 30 hours to cure completely. In the end CIPP forms a tight-fitting, seamless, and corrosion resistant tube within the original pipe.
Of course there is quite a bit of confined space entry safety required for this type of operation. Entrants must be carefully trained using gas monitors as well as entry and retrieval devices. And there are several safety standards associated with CIPP including ASTM F1216 which uses test specimens oriented parallel with the pipe axis, as well as the Europe standard EN ISO 11296-4, which tests samples oriented in the hoop direction.
At the end of the day, this is a smart technology for many applications and helps utilities and municipalities as well as private projects avoid costly dig and replace methods.
If you have questions about CIPP as it relates to confined space entry safety, please give us a ring. If you have experienced any specific challenges installing CIPP yourself, we'd love to hear about it.
Urekebishaji wa mabomba ya chini ya ardhi na nafasi za chini ya ardhi kupitia mchakato unaojulikana kama CIPP au "kutiwa maji katika mahali" ni haraka kupata kasi duniani kote. Mabomba ya maji, maji machafu, gesi, na kemikali na mifumo mingine ya chini ya ardhi yenye upatikanaji mgumu sasa yaweza kusafishwa na kufungwa tena bila kuchimba mfumo wote. CIPP ni mfumo wa bomba ndani ya bomba na inaweza kutumika katika mfumo na kama kidogo kama 4 in. kipenyo. Mabomba makubwa zaidi ya inchi 100 yanaweza pia kutumiwa kwa kutumia njia hii. Kuchimba kidogo au hakuna kuchimbwa kunahitajika katika operesheni hii ya uaminifu kwa mazingira. Utaratibu huo unahusisha vifuniko vya mabomba ya polyester yaliyojaa resini kugeuzwa au kuvutwa kupitia bomba lililoharibiwa au lisilo na muundo mzuri. Layer hii inaweza kugeuzwa kwa kutumia maji au shinikizo la hewa. Kuuma kwa resin liner hufanywa kwa kutumia maji moto, mwanga wa UV, au mvuke na inachukua kutoka saa tano hadi 30 kuuma kabisa. Mwishowe, CIPP hufanyiza bomba lenye kufaa, lisilo na mshono, na lisiloweza kutu ndani ya bomba la awali. Bila shaka kuna kiasi kikubwa cha usalama wa kuingia katika nafasi iliyofungwa inayohitajika kwa aina hii ya operesheni. Washiriki lazima kuwa makini mafunzo kwa kutumia gesi wachunguzi kama vile kuingia na vifaa vya kupata. CIPP (Compact Pipe Oriented Testing) ni mfumo wa majaribio wa ASTM F1216 ambao hutumia sampuli za majaribio zilizoelekezwa sambamba na mhimili wa bomba, na kiwango cha Ulaya EN ISO 11264 ambacho hutumia sampuli zilizoelekezwa kwa mwelekeo wa mviringo. Mwisho wa siku, hii ni teknolojia ya akili kwa ajili ya maombi mengi na husaidia huduma na manispaa pamoja na miradi binafsi kuepuka gharama kubwa kuchimba na kubadilisha mbinu. Ikiwa una maswali yoyote kuhusu CIPP, kama inahusiana na usalama wa kuingia katika nafasi iliyofungwa, tafadhali tupigie simu. Kama una matatizo yoyote ya kipekee ya kuanzisha CIPP mwenyewe, tungependa kusikia kuhusu hilo.