Te Hiritanga o te Paipa Hinu me te Hau: Te Haumaru me te Taiao

Kupu Whakataki

Ko te pono o te hiri i roto i ngā paipa hau he mea matua mō te haumaru o te tukanga me te mahi taiao. Ka taea e ngā hapa iti i ngā flanges, ngā valves, ngā teihana compressor, ngā taputapu ine rānei te piki ake ki ngā tukunga methane, ngā aukati ratonga, ngā whakatikatika utu nui, ā, i ngā wā kino, ngā aituā nui o te pehanga. I te pikinga ake o ngā pēhanga whakahaere, me te kaha ake o ngā hanganga hau, me tu atu ngā pūnaha hiri i te ahotea miihini nui ake, te rerekētanga pāmahana, me te pānga matū me te kore e ngaro te pono. E whakamārama ana tēnei tuhinga he aha te hiranga o ngā hiri o ngā paipa hau, te wāhi e puta ai ngā mōrearea pono, me pēhea te awe o te mahi hiri i te whakahaere tukunga, te wā mahi, me te tutuki i ngā ture, e whakarato ana i te turanga mārama mō te kōrero hangarau e whai ake nei.

He aha te Hiranga o te Pono o te Hiri Paipa Hau

I roto i ngā whatunga tuku pēhanga teitei, ko te pono o te hiri o ngā paipa hau te parepare matua ki te ngaronga nui o te aukati me te poke o te taiao. Ko te pono o te mahi o ngā hanganga waenga-awa e whakawhirinaki nui ana kite pumau ā-pūkaha me te matūo ngā wāhanga hiri kei ngā flanges, ngā takirere, ngā teihana kōpeketanga, me ngā inenga. I te mea e akiaki ana ngā kaiwhakahaere paipa kia nui ake te rere o te hau me te whakawhiti ki te whakahaere i ngā ranunga hau uaua, kua tino piki haere ngā tono kei runga i ēnei atanga hiri.

Te aukati i te turuturu, te whakahaere tukunga, me ngā utu mō ngā aituā

He mea nui te pupuri i ngā rohe ā-hau, ehara i te mea mō te haere tonu o te mahi anake, engari mō te whakaiti hoki i te pānga pūtea me te taiao o ngā tukunga rerenga. Ko te Methane, te wāhanga matua o te hau māori, he Pūmanawa Whakamahana Ao (GWP) tata ki te 28 ki te 36 ngā wā nui atu i te hauhā waro i roto i te wā 100-tau. E whakaatu ana ngā raraunga ahumahi ko ngā turuturu iti, tonu puta noa i ngā hanganga paipa ka taea te take tae atu ki te 30% o ngā ngaronga methane rerenga katoa i te rāngai waenga.

Haunga ngā pānga ki te taiao, he nui ngā pānga pūtea o ngā pakaru o te hiri. Ka taea e te kati o te paipa i te wā i puta mai ai te pakaru o te gasket flange, te pakaru rānei o te hiri takirere compressor te aukati i te tuku hiko. Mō tētahi raina tuku hiko nui-kaha, ko ngā utu wā whakatā i te wā i whakaritea he nui ake i te $250,000 ia rā i roto i ngā moni whiwhi kua whakaroahia, kāore i te whakaurua ngā utu tonu o te whakaoho ohorere, te keri, me te whakakapinga wāhanga.

Ngā āhuatanga whakahaere e whakararu ana i te pumau o te hiri

Me tu atu ngā hiri paipa ki ngā taiao kaha e whakaiti ana i te kounga o ngā rauemi. Ka pēhia tonutia ngā huānga hiri e te huringa pēhanga, te ru wera, me te pānga ki ngā mea kaha pērā i te hauwai whanariki (H2S) te hauhā rānei (CO2) i roto i ngā tono hau kawa.

Ko tētahi o ngā āhuatanga mahi tino kino ko te Whakakorenga Hau Tere (RGD), e mōhiotia ana ko te Whakakorenga Pahū (ED). Ka puta tēnei āhuatanga ina heke tere te pēhanga o te pūnaha—he maha ngā wā ka neke atu i te 1,000 psi te hekenga i roto i te haora. Ka tere te horapa o te hau kua uru ki te hanganga ngota o te hiri elastomer, ka puta he pupuhi o roto, he pakaru, ā, ka pakaru kino rawa atu te mekameka polymer kua honoa. Ko te whakaiti i ēnei āhuatanga me whai hanganga rauemi tika me te hoahoa miihini pakari.

He aha te Whakamārama i te Mahi o te Hiri Paipa Hau

Ko te mahi a te hiri e whakatauhia ana e te hononga o te pūtaiao rauemi, te hoahoa āhuahanga, me ngā here ā-tinana o te taiao mahi. Me pupuri e te hiri te ahotea pa e ranea ana ki ngā taputapu honohono puta noa i ngā pēhanga me ngā huringa pāmahana e matapaetia ana, me te kore e pāngia e te huringa kirihou tuturu, e te pirau matū rānei.

Ngā rauemi hiri, ngā āhuahanga, me ngā rohe pēhanga-pāmahana

Ko te hanganga taketake o te hiri paipa hau ko ngā mowhiti-O, ngā gaskets pakaru porowhita, ngā gaskets hononga momo mowhiti (RTJ), mengā hiri ngutu motuhake. Kua hangaia ia āhuahanga hei whakahaere i ngā tohatoha ahotea motuhake. Hei tauira, ko ngā flange paerewa API 6A e whakamahia ana i roto i ngā tono pane puna me te tuku pēhanga teitei me whai hiri whakarewa RTJ kua whakatauria kia tu atu ki te 15,000 psi. Ka whakawhirinaki ēnei gasket ki te ahotea whakapā ā-rohe teitei hei whakakotahi i te whakarewa ki roto i te awaawa flange, ka hanga he ārai ārai-taurangi.

I ngā tono pēhanga iti iho, ka whakaratohia e ngā mowhiti-O elastomeric me ngā gaskets takai porowhita me te whakakī karāpeti, PTFE rānei he whakaoranga me te āhua rite. Heoi, ko ō rātou rohe pēhanga-pāmahana ka herea e te ātete ki te whakaputanga o te polymer me te kaha tuku o ngā rauemi whakakaha.

Te whakataurite i ngā hiri elastomer, thermoplastic, me te whakarewa

Ko te kōwhiringa i waenga i te elastomer, te thermoplastic, me ngā hiri whakarewa ko te paunatia o te ngāwari ki te pakari o te wera me te matū.

He tino pakari ngā elastomers, ā, he ngāwari ki te whakakore i ngā hapa iti o te mata, engari he ngāwari ki te whakapūtanga me te RGD. Ko ngā thermoplastics pēnei i a PEEK he tino ātete ki te whakapūtanga me te kore e taea te whakamahi i ngā matū, e hono ana i te āputa i waenga i ngā polymers me ngā konganuku. Ko ngā hiri konganuku he mea whakarite mō ngā taiao tino kino, e tuku ana i te hototahi matū tino pai me te ātete pāmahana, ahakoa me whai mata hononga ma kia tika ai te mahi.

Ngā paearu matua mō te whiriwhiri i te hiri

Ko te whiriwhiri i te hiri tino pai me arotake i te hanganga hau motuhake, te pēhanga mahi mōrahi (MOP), me ngā awhe pāmahana tino nui. He paearu nui i roto i tete rāngai hinu me te hauhe tutuki i ngā paerewa NORSOK M-710, ISO 23936-2 rānei, e whakahau ana i te whakamātautau me te whakaaetanga o ngā rauemi kore-whakarewa mō ngā taiao ratonga kawa me ngā taiao RGD.

Ina neke atu i te 2% ngā kukū H2S, ina takahia rānei e ngā pēhanga wāhanga ngā paepae motuhake, me tohu e ngā kaiwhakahaere ngā rauemi e tutuki ana i te NACE MR0175/ISO 15156 hei ārai i te pakaru o te ahotea whanariki i roto i ngā wāhanga whakarewa me te pakaru tere i roto i ngā polymer. Me whakataurite e ngā kaihangarau ēnei whakaritenga matū ki ngā āputa whakaputa miihini kei roto i ngā taputapu kia kore ai te rauemi kua whiriwhiria e kutikuti i raro i te pēhanga tihi.

Me pēhea te manatoko i te pono o te hiri mā te hoahoa me te tāutanga

Ahakoa ngā rauemi hiri tino matatau rawa atu, ka rahua mēnā kāore i te tika te hoahoa, te huihuinga rānei o te pūnaha. Ko te manatoko i te pono o te hiri me whai mana whakahaere pakari mō ngā ātete hanga taputapu, ngā whakaotinga mata, me ngā tikanga miihini e whakamahia ana i te wā tāutanga.

Ngā mana tāutanga, te whakarite mata, me ngā mahi taipana

Me mīhini ngā mata e hono ana i ngā flanges me ngā whare takirere ki ngā tawhā taratara tika kia tika ai te hanganga o te hiri, me te kore e tukua ngā ara uru. Mō ngā gaskets whiu elastomeric me ngā gaskets porowhita paerewa, ko te tikanga me whai toharite taratara (Ra) ngā whakaotinga mata o te 3.2 ki te 6.3 µm. I tetahi atu taha, ko ngā hiri whakarewa-ki-whakarewa me whai mata tino oro, he maha ngā wā ka hiahiatia he Ra iti iho i te 0.8 µm.

He mea nui anō hoki ngā mahi taipana pūtu. Ko te kore taurite o te uta pūtu ka puta te hurihuri o te flange me te pēhanga kore taurite o te gasket, ka hua ake he extrusion ā-rohe, he turuturu rānei. Mā te pēhanga ā-ringa me te kore he taputapu kua whakatikatikaina ka hua ake he marara o te uta pūtu tae atu ki te ±30%. Hei whakatutuki i te pēhanga ōrite e hiahiatia ana mō ngā hiri hau tino pono, ka nui haere te whakawhirinaki o ngā kaiwhakahaere ki ngā pūnaha whakapūmau waipēhi e whakamana ana i te uta pūtu i te wā kotahi me te taurite puta noa i te flange.

Ngā tikanga tirotiro me te whakamātautau

Ko te manatoko i muri i te tāutanga e whakawhirinaki ana ki te whakamātautau kore-whakangaro (NDT) me te whakamātautau pēhanga. Ko te whakamātautau waipū te whakaritenga taketake mō te pono o te hanganga, engari kāore e ranea hei manatoko i te hiri ā-hau nā te rerekētanga o te matotoru o te wai me te hau. Ko te whakamātautau turuturu hauota-hīriama te paerewa ahumahi mō ngā hanganga hau nui.

I raro i ngā tikanga pērā i te ISO 15848-1 mō ngā tukunga rerenga, ka tukuna ngā takirere me ngā hononga whakarara ki te ine papatipu helium. E aro ana tēnei whakamātautau ki ngā whakarōpūtanga tere turuturu pakari, e hiahiatia ana he kaha pupuri tae atu ki te 10⁻⁶ mg/(s·m) mō ngā rerenga hau tino paitini, tino pūngao rānei. Mā ngā tirotiro mara noa ka whakamahia ngā kāmera Whakaahua Hau Whatu (OGI) me ngā pūoko methane e hangai ana ki te laser hei tautuhi i ngā turuturu moroiti i te wā e mahi ana.

He tukanga whakahaere pono taahiraa-i-te-taahiraa

Ka tīmata te tukanga whakahaere pono pakari i mua noa atu i te whakaurunga o te hiri. Ko te taahiraa tuatahi ko te arotake whānui i mua i te tāutanga, me te manatoko kei te ōrite ngā pūrongo whakamātautau rauemi hiri (MTR) ki ngā whakaritenga hangarau, ā, kei roto i te manawanui ngā āhuatanga taputapu.

Ko te taahiraa tuarua ko tetāutanga whakahaeretia, mā te whakamahi i tētahi raupapatanga taipana whakawhiti-tauira kua tuhia me ngā taputapu kume kua whakatikatikaina. Whai muri i te huihuinga, ka pāngia te pūnaha e tētahi whakamātautau pēhanga hau, wai rānei kua whakaritea, me te pupuri i te 1.1 ki te 1.5 ngā wā o te pēhanga whakahaere mōrahi e whakaaetia ana (MAOP) hei manatoko i te kaha whakaputa. Hei whakamutunga, ka whakahaerehia he matawai tukunga turanga i te pēhanga whakahaere noa hei whakatū i tētahi āhua kore-tūtaki, ka tuhia ki roto i te pūnaha whakahaere tiaki rorohiko o te whare (CMMS) mō te tātari whakatairite ā muri ake nei.

Ngā Take Haumaru, Taiao, me te Whakatutukitanga

Kua tino kaha ake te taiao ture e whakahaere ana i ngā mahi paipa hau, nā ngā kaupapa āhuarangi o te ao me ngā paerewa haumaru mahi pakari i akiaki. Kāore te pono o ngā hiri e tirohia ana hei inenga tiaki anake; he tawhā nui o te tutuki i ngā whakaritenga e aro turukihia ana e ngā tari taiao.

Ngā ture tukunga rerenga me ngā tumanakohanga haumaru tukanga

Kua whakatūria e ngā whakahaere ture o te ao he anga kaha hei aukati i ngā Matū Waro Waro (VOC) me ngā tukunga methane. I te Hononga o Amerika, ko te New Source Performance Standards (NSPS) Subpart OOOOa (Quad Oa) a te EPA e whakahau ana i ngā kaupapa kimi me te whakatika turuturu (LDAR) whānui mō ngā kaiwhakahaere waenga-rerenga. I runga i te whakarōpūtanga o te whare, me whakahaere e ngā kaiwhakahaere ngā rangahau Optical Gas Imaging (OGI) i ia hauwhā, i ia hauwhā rānei.

Ka tino inehia ngā tumanakohanga haumaru o te tukanga. I raro i te Tikanga EPA 21, ko te tukunga hauhautanga neke atu i te 500 wāhanga ia miriona (ppm) e rēhita ana ka kiia he turuturu ture. Kia tautuhia, ka whai mana ngā kaiwhakahaere ki ngā karaka tutuki pakari, me te hiahia kia ngana ki te whakatika tuatahi i roto i ngā rā e 5, ā, me whai angitu te whakaiti i roto i ngā rā e 30. Ki te kore e mau tonu te pono o te hiri i raro i ēnei tawhā, ka tūpono ngā kaiwhakahaere ki ngā whiu ā-ture nui me te aukati rawa.

Ngā momo rahunga noa me ngā mōrearea taiao

He mea nui te mārama ki te pakaru o ngā hiri hei whakaiti i ngā mōrearea taiao. Ko ngā momo pakaru i roto i ngā paipa hau he mea tino motuhake ki ngā taumahatanga mahi e pā ana ki te hononga.

Ina puta ēnei hapa, ka tere te piki haere o ngā mōrearea taiao. Ka taea e te hapa whakaputa ā-rohe i runga i te takirere poraka matua te tuku i ngā mano putu kūpiko paerewa o te methane i mua i te wehenga me te pupuhi i te raina. Mā te tātari pūnaha i ēnei momo hapa mā te tātari pūtake (RCA), ka taea e ngā kaiwhakahaere te neke mai i te whakapiri turuturu tauhohe ki te whakatakotoranga rauemi matatau.

Me pēhea te whakatau pai ake mō te hiri

Ko te arotau i te pono o te hiri o ngā paipa hau me whai rautaki i ngā whakaritenga hangarau, te pakari o te mekameka tuku, me te tātari utu mō te huringa ora. Me titiro ngā kaiwhakatau ki tua atu i te utu waeine hei aromatawai i te pānga whānui o te pono o te hiri ki te wā mahi whānui o te whatunga.

Ngā paearu aromatawai mō te hoko me te kaiwhakarato

He mea nui te aromatawai a te kaiwhakarato hei ārai i te rahunga wawe o te hiri.Ngā tīma hokohokome tono kia taea te whai i ngā puranga katoa, me te whai tiwhikete rauemi EN 10204 3.1 hei whakarite kia ōrite te hanganga matū o te hua kua tukuna ki te tauira whai mana. Mā te arotake i te pūnaha whakahaere kounga ISO 9001 a te kaiwhakarato ka whakarite kia tino whakahaerehia ngā tukanga whakaranu, whakakoi, me te whakamaroke.

Ko ngā āhuatanga whakahaere hoki e ārahi ana i ngā rautaki hoko. Ko ngā elastomers ātete-RGD motuhake, ko ngā hiri whakarewa kua hangaia kia rite ki te mīhini, he maha ngā wā ka mau i ngā Rahinga Ota Iti rawa (MOQ) mai i te 500 ki te 1,000 wae mō ngā pokepoke ritenga, engari ko ngā mowhiti-O NBR, FKM rānei paerewa e wātea ana i te whata. Mā te whakauru i ngā wā arataki ki te whakamahere rarangi taonga ka ārai i te mahi morearea o te whakakapi i ngā hiri iti iho i te paerewa, e wātea ana i te wā o te korenga o te ratonga.

Te whakataurite i te utu o mua me te mōrearea o te wā kore mahi

Ko te whakatau tino nui i roto i te hoko hiri ko te whakataurite i te whakapaunga whakapaipai tuatahi ki te Utu Katoa o te Mana Pupuri (TCO) me te mōrearea wā kore mahi. Ko te whakapai ake i te flange mai i te gasket Nitrile (NBR) paerewa—e $5 te utu mō ia hiri—ki te Fluoroelastomer (FKM) ātete-RGD tino hangarau, e $50 te utu mō ia hiri, he 10x te whakarea o te utu wāhanga o mua.

Heoi, he iti noa iho tēnei pikinga iti o te whakapaunga whakapaipai ina paunatia ki te kōtaha mōrearea. Mā te karo i tētahi huihuinga whakakorenga pahū kotahi ka ārai i te $250,000 pea te kati i ia rā, ngā whiu taiao, me ngā utu mahi e pā ana ki ngā wawaotanga morearea. Nō reira, ko te whakarite i ngā mea kounga teitei, kore e mahi matū, meNgā hiri ātete-RGDputa noa i ngā pūnga matua katoa—ahakoa kāore e taea e ngā āhuatanga whakahaere te whakamahi i ngā rauemi taumata iti—e whakarato ana i te rautaki tino pakari me te tino whai hua mō te whakahaere i te pono o ngā paipa hau hou.

Ngā Whakaaro Matua

• Ko ngā whakatau me ngā take matua mō te hiri o te paipa hau
• Ngā whakaritenga, ngā whakaritenga, me ngā arowhai mōrearea e tika ana kia whakamanahia i mua i tō whakaae
• Ngā mahi whai muri me ngā whakatūpato ka taea e ngā kaipānui te tono tonu

Ngā Pātai Auau

He aha te mea nui rawa atu te pono o te hiri o te paipa hau?

Ka ārai i ngā turuturu methane, ngā kati kore i whakamaheretia, me ngā aituā haumaru. Ahakoa ngā pakaru iti o ngā hiri i ngā flanges, ngā valves, ngā teihana compressor rānei, ka taea te whakanui ake i ngā tukunga me te hanga wā whakaweto utu nui.

Ko ēhea ngā rauemi hiri e tino pai ana mō te ratonga paipa hau?

Kei te pēhanga, te pāmahana, me te matū hau te mea e whakawhirinaki ana. He pai te HNBR, te FKM rānei mō ngā mahi elastomer maha, ka āwhina te PTFE, te PEEK rānei ki te ātete ki te pehanga, ā, ka pai ngā hiri whakarewa mō ngā tono pēhanga teitei rawa atu, tino uaua rawa atu.

He aha te take e pakaru wawe ai ngā hiri o ngā paipa hau?

Ko ngā tino take ko te huringa pēhanga, te ru wera, te tāutanga ngoikore, ngā mata hiri taratara, me ngā rauemi kaha pēnei i te H2S, te CO2 rānei. Ka taea hoki e te Wetewete Hau Tere te pakaru i ngā hiri elastomer i muri i te hekenga ohorere o te pēhanga.

Me pēhea e taea ai e ngā tīma tiaki te whakaiti i te turuturu o te hiri i roto i ngā taputapu e pā ana ki ngā paipa?

Whakatauritea te rauemi hiri ki ngā āhuatanga ratonga, tirohia ngā mata o te repe me te flange, whakahaere i te taipana tāutanga, me te whakakapi i ngā wāhanga kua pakaru i te wā tiaki kua whakaritea. He mea nui te tirotiro auau i ngā turuturu huri noa i ngā takirere, ngā papu, me ngā pūnaha kōpeketanga.

Ka taea e Victor Seals te tautoko i ngā hiahia hiri hinu me te hau?

Āe. Ka whakarato a Victor Seals i ngā hiri miihini, ngā hiri pou, ngā whakakapinga hototahi-OEM, me ngā wāhanga e manawapa ana mō ngā papu ahumahi e whakamahia ana i roto i te hinu, te hau, te matū hinu, me ngā tono tiaki e pā ana.