Reservoir propane buy senn, pooling gaz ci suufu suuf, ak tàngoor wu ëpp ci silindre bi¶
Nimero urgence yi wuute nañu ci réew mu nekk. Xët wii dafay jëfandikoo 911, di nimero Etats Unis ak Canada. Yeneen réew yu bari dañuy jëfandikoo 112, 999, wala beneen nimero. Wut nimero sa réew.
Milyoŋ yu bari ci kër yi, tool yi, kër yu ndaw yi, waañ yi ci biti, ak oto yi ñuy jëfandikoo ngir bégal seen xol, ñu ngi wéeru ci Gaz pétrolier liquéfié (GPL/propane) ñu denc ko ci biir reservoir yu nekk ci biti (diggante 450 ba 4,000 litir / 120 ba 1,000 gallon US) (20 livre) silindre asiye. Propane ak gaz naturel ñoom ñaar am nañu xet gu bonn ethyl mercaptan (muy xeeñ nen yu yàqu, spray skunk, wala chou buy seey), propane dafay doxalee ci anam wu wuute lool te gëna njuuj njaaj suy senn ci biir tabax. Gaz naturel (methane) moo gëna woyof air bi (gravité spécifique 0.60), moo tax dafay yéeg ba ci plafond bi, daal di génne ngelaw li ci palanteer yi ci kaw. Gasu propane moo gëna diis air bi 1,52 yoon. Su propane bi di senn ci vanne four bi ci suufu suuf, ci liiñ biy tàngal ndox mi, wala ci tuyo copper bu corrode, gaz biñu gisul dafay suux ci suuf ni ndox buñudul gis, di naaw ci eskalier bi ci suufu suuf, di naaw ci biir selil bi. fosoŋu sump, ak xaar làmp pilotu chauffage ndox, interruptëru flotëru pompu sump, wala relais compresseur frigo ngir tàkk benn explosion buy yàq fondation.
Ñaari yeneen jafe-jafe yu jëm ci propane dañu jàpp boroom kër yi ci garde at mu nekk: odorant fade, fu gasu propane biy senn ci suuf si wala xoosu ci biir reservoir asiye bu bees, di dindi xetu nen bu yàqu bi, suko defee néeg bi fees 100 pursaa ci gaz bu amul xet; ak Liquid buy seey buy yaatal Vapeur Explosions (BLEVE), sudee safara broos, safara garage, wala safara barbecue tàngal coquille asiye bi ci kaw reservoir propane bi am pressure ba wen wi nooy ba noppi toj nekk boule safara bu mag buy daw. Xam ni ñuy rawalee nit ci biir néeg te doo laal benn interruptëru làmp wala telefon, ni ñuy tëjee vanne pënu loxo bi ci suufu dome tank bi ci biti, ak kañ nga wara rawale 800 meetar (½ mile) fu sori ci vanne buy wàññi presioŋ bi ci tank bi, loolu dina muccal sa njaboot.
Defal lii leegi¶
Soo xeeñee nen yu yàqu wala xetu skunk ci sa kër wala ëtt, nga dégg bruit bu am doole bu bawoo ci reservoir propane wala aparey, wala nga gis lakk buy tàkk ci silindru propane, defal jiroom benn jëf yii ci saasi:
- ** Rawal ku nekk ci kër gi ci saasi, rawatina ci suufu kër yi ak ci etaas yi ci suuf**: Ndax propane moo gëna diis ngelaw li 1,5 yoon, suufu kër giy senn mën na nekk ci kaw Limitu Explosive bu Suuf ci niveau ankle ak waist balaa kenn ku nekk ci kaw di xeeñ lu woyof. Waxal ku nekk mu yéeg ci etaas bi, génn ci buntu kër ga dox ci saasi; Bul musa wàcci ci biir kër gi ngir xool fuur bi wala nga xeeñ ci wetu dër bi.
- BULEEN dindi benn interruptëru làmp, bul dindi benn aparey, jëfandikoo telefon fixe wala telefon ci biir kër, wala nga tëye buntu garage bu am kuuraŋ: Sudee néeg bi dafa am njaxasu propane-air diggante 2.1 pursaa ak 9.5 pursaa, interruptëru mikroskoop bi dafay tëju ci biir néeg bi. fob dugg, wala motëru ubbikaayu buntu garage dina detonate kër gi yépp. Bàyyil làmp yi ñu mel nimu mel, nga génn ci buntu buñu tëjuwul.
- Bul musa tàmbali wala toxal oto, daggukaayu gazon, wala wagon golf bu gaare ci garage bi wala ci tali bi ci wetu fiy senn: Demarreur combustion bi ci biir ak convertisseur catalytique yu tàng yi dañuy taal ci saasi vapër propane yiy laxasu suuf si. Bàyyileen oto yépp ñu gaare fi ñu nekk, ngeen dox 100 meetar (330 pied) ci ngelaw li ak ci kaw joge ci kër gi.
- Sudee fuit bi tàkkuwul, te mën nga yegg ci sa reservoir propane bu bari ci ngelaw li, tëj vanne bi gëna mag ci wàllu montuer: Yéegal dome protecteur metal bi ci kaw sa reservoir propane bi nekk ci biti, nga wut cuivre bu rond bi wala wen Service Shutoff Handw ndeyjoor, "ndeyjoor-tighty") bañu tëjoo bu baax. Bul musa jéema tëj benn vanne sudee reservoir bi dafay siiwal gelu ndoxe ci sa loxo, sudee reservoir bi mingi ci biir pax mu woyof, wala sudee safara a ngi fépp ci wetu silindre bi.
- BULEEN MUSAA fay jet propane buy tàkk buy génn ci vanne reservoir bi fileek mënoo fay ci saasi flow karburaŋ bi: Sudee silindre propane buy senn dafa tàkk ci vanne bi wala ci portu relief pression bi, xal yi dañuy lakk gaz biy génn ci biti. Soo fayee xal yi ak extincteur chimik bu waw, fekk propane bi wéy di tuuru, gaz bi gëna diis ngelaw li te lakkul dafay dajaloo ci suuf si, daal di kalaate bu baax ci saa si mu gis leer gu bees.
- Sudee lakk dafay tàngal ci reservoir propane wala vanne de délivée bi tàmbali yuuxu ni motëru jet, génne ko ci diggante 300 ba 800 meetar (1,000 pied ba ½ mile) ci ginaaw muur bu dëgër: Reservoir propane bu lakk mën na jeex Takk)**. Woowal sa dëkk nimero paj mu jamp (911 ci Etats Unis ak Canada, 112 ci biir Union Européenne, 999 ci Royaume-Uni) ak sa furnisër gaz propane ci fu soriwul ci kaw.
Lu waral 'Odorant Fade' def propane biy senn ci biir suuf ak ci suufu suuf du am benn xet
Bul xalaat ni ndax mënoo xeeñ nen yu yàqu, amul propane ci sa néeg. Sunu sukkandikoo ci kuréel gi yor wàllu kaaraange ak loraange ci produit chimik yu Etats Unis (CSB) ak kuréel gi yor wàllu aar lakk ci réew mi (NFPA), xet gu bonn giñ yokk ci propane (ethyl mercaptan) mën na xet gu ñàkk njariñ: 1. ** Adsorption suuf : Sudee ligne propane buñ suulon ci përëm wala asiye dafay senn ci suufu suuf, ban bu xawa tooy wala suuf su am suuf si dafay melni filtre chimik bu mag, di dindi 90 pursaa ci mercaptan ethyl ci gaz bi ndax propane bi amul xet dafay dem ci bitti tuyo bi jub ci sa basement. 2. Oxidation rouille ci biir reservoir bi: Ci biir reservoir asiye yu bees wala yu xawa tooy tuuti, oxide de fer (rouge) dafay jaxasoo ci anam chimik ak ethyl mercaptan ba noppi soppi ko mu nekk composé disulfide bu amul xet. 3. Coono olfactif: Soo noyyee ethyl mercaptan ci diiru 10 simili, sa bakkan dafay ray reseptër yi, nga bàyyi ko xeeñ. Bépp kër bu am aparey propane DAFA wara am alarm gaz explosif (GPL/propane) buñ bind ci UL 1484 ci wetu dër bi (ci diggante 15 ba 30 santimet / 6 ba 12 pouce ci baseboard bi)** ci biir néeg bi ak ci saal bi ñuy jëfandikoo.
Garab taktik buy jël dogal ngir propane buy senn ak silindre yuy tàng lool¶
Jëfandikool garabu dogal bii ngir ràññee fukki vapër bi ci biir / ci suufu kër gi, liiñ bu ndoxe bi ci biti, ak senaario BLEVE bu silindre bu am risk bu rëy.
flowchart TD
Start["Jafe-jafe propane: Xetu nen bu yàqu, tuyo buy siif, alarm gaz, wala lakk ci wetu reservoir"] --> Scenario{"1. Fan la hazard bi nekk?"}
Scenario -->|"A. Ci biir kër / ci suufu kër xet wala alarm LPG"| NoSparks["1. BULEEN laal interruptëri làmp yi, telefon yi, termostat yi wala ubbikaayu buntu garage yi<br/>2. Bul musa wàcci ci suufu kër gi"]
NoSparks --> EvacUp["Rawaleen ñépp ci biti ci saasi; dox CI KAW ak NGEL 100m (330 ft)"]
EvacUp --> ShutValve{"Ndax mën nga yegg ci reservoir bi ci biti te doo jaar ci gaz bi?"}
ShutValve -->|"Waaw: Reservoir bi ci biti leer"| TurnClockwise["Yéegal dome reservoir bi nga wëlbati pënu cuivre bu mag bi ci wàllu MONTRE (ci ndeyjoor) bañu tëj"]
ShutValve -->|"Déet: Di siif bu am doole wala di gelé"| Call911["Dellu ginaaw 100m+; woo 911 / 112 / 999 ak utilite propane"]
TurnClockwise --> Call911
Scenario -->|"B. Safara buy dal ci silindru gril bi wala ci reservoir bi"| BleveCheck{"Ndax vanne biy dindi pression bi ci reservoir bi dafay yuuxu/di génne ay torche yuy tàkk, wala lakk bi dafay tàngal weñ wi ci kaw?"}
BleveCheck -->|"Waaw: Jet buy yuuxu wala xal yu direct ci kaw tank"| BleveEvac["RISK BLEVE YU JEGE: Bàyyi suppression ci saasi; daw 300m ba 800m (1,000 ft ba 1/2 mile) yéeg ci ginaaw tabax bu dëgër; artu pompier yiy ñëw"]
BleveCheck -->|"Deet: Xal yu ndaw ci hose regulateur bi kese, reservoir bi seddal"| HoseShut["Sudee mën nañu ko yegg ci ngelaw lu yéeg te amul xal ci kaw reservoir bi: Tëj pënu silindre bi ci wàllu montuer bi ak gant der ngir xiifal xal yi; luko moy rawale"]
Matriks buy méngale: propane (GPL) ak gaz naturel (methane) ci jafe-jafe yi ci kër¶
Boroom kër yiy toxu ci dëkku taax bu gaz naturel munisipaal bi di jëfandikoo, dem ci dëkku banlieue wala àll bu propane di jëfandikoo, dañuy faral di jëfandikoo instinct gaz naturel biy ray nit su propane bi di senn. Teg leen seeni doxalin physique ak explosif:
| Moomeel physique ak kaaraange | Propane (Gaz de pétrole liquide / $ C_3H_8$) | Gaz naturel (Methane / \(CH_4\)) |
|---|---|---|
| Densité vapeur vs. Air (Air = 1.00) | 1.52 ba 2.00 (diis ngelaw): Sinks jubal ci suuf, naaw wàcci melni ndox, ak piscines yu amul àpp ci biir sous-sol, crawlspaces, dren dreins, fose, ak valé | 0.55 ba 0.65 (Dina gëna woyof ci air bi): Dafay yéeg bu baax dem ci plafoŋ bi, sàq bi, ak etaas yu kawe yi, ba noppi di gaawa tasaaroo ci jawwu ji ci biti |
| Fan ñuy fikse detektëru gaz yuy kalaate | LOW ci kuuraŋ bi: 15 ba 30 cm (6 ba 12 pouces) ci kaw dër bi ci biir néeg yi, néeg yi, ak waañ yi (detektër biñ def ci plafoŋ bi du gis piscine bu propane ci dër bi ba néeg bi tàmbalee kalaate) | KAWE ci kaw miir bi: 15 ba 30 cm (6 ba 12 pouces) ci suufu plafoŋ bi kon plumes methane yiy yéeg dañu njëkka dóor kaptër bi |
| Tolluwaayu dencukaay bi & Ratio yaatuwaayu | Denc ko ci sa moomel ni ndox mu am pressure ci 700 ba 1,400 kPa (100 ba 200 psi); 1 litir propane bu ndoxe dafay yaatu nekk 270 litir gaz buy tàkk suñu ko bàyyee | Dañu koy joxe ci gaz bu am presioŋ bu woyof jaaraleko ci mbedd yu mag yi ci 1.7 ba 14 kPa (0.25 ba 2 psi); amul reservoir buy denc ndox ci dëkkuwaay yi |
| Point d'ébullition & Risk de froid | Dindi 42°C (Dindi 44°F): Propane buy génn dafay seey ba noppi gelaase guus gi ci jawwu ji nekk niir bu weex bu dëgër; laal luy senn lu ndoxe dafay indi ci saasi gel bu xóot bu tisu cryogenic | Lu wàññi 162°C (lu wàññi 260°F) ci sàntraalu LNG yi kese; tuyo yiy senn ci dëkkuwaay yi gasu tàngoor la bu nekk ci néeg bi te amul benn loraange buy indi gelé |
| Tolluwaayu tàkk ci air (LEL ba UEL) | 2.1% ba 9.5% concentration gaz-à-air: 2.1% concentration propane ci air bi ci suufu suuf rek lañu soxla ngir mëna tàkk bu baax | 5.0% ba 15.0% concentration gaz-à-air: Dafay laaj lu ëpp ñaari yoon concentration propane balaa muy yegg ci yam bi gëna suufe |
| Energie bi ci Metre Cube bu nekk (Pied Cube) | 93 Megajoule/\(m^3\) (2,500 BTU/\(ft^3\)): Dafa am 2,5 yoon energie tàngoor buy kalaate ci volume bu nekk ci gaz bi, moo gëna gaz nature | 37 Megajoule/\(m^3\) (1000 BTU/\(ft^3\)) |
Fëy bu xóot 1: Naka la piscine propane yu gëna diis ci biir kër yi ak ni ñuy rawale ci jàmm¶
Ndax vapër propane dafa diis lu ëpp benn yoon ak genn-wàll air bi, su amee leak bu yeex ci chauffe-eau bi ci suufu suuf, ci vanne gaz ci four bi, ci wawalukaayu yéere yi, wala ci fitting flare, dafay nuru mbënd buñudul gis buy fees piscine ci suuf, yéeg ba ci kaw.
[BASEMENT PROPANE POOLING ANATOMY]
First Floor: [Occupants barely smell faint odor at nose height]
======================================================== (Floor Joists)
Basement Ceiling: [0.2% Propane - Clean Air]
|
Mid-Wall (1.5m): [1.0% Propane - Below LEL]
|
Knee/Waist Level: [2.1% to 9.5% PROPANE - EXPLOSIVE ZONE]
| <-- Standing pilot light, sump pump switch,
| or furnace igniter sits right here
Basement Floor: [12%+ Dense Propane Pool & Sump Pit Trap]
========================================================
declencheur ignition yu nëbbu yiy detonate propane bi nekk ci suufu suuf¶
Ci fukki-fukki explosion propane yu faat ci dëkkuwaay yu NFPA ak pompie yu etaa yi amal, boroom kër gi xeeñ tuuti gaz (wala dégg seen làmp pilote di fay) ba noppi dox wàcci eskalier bi ci suuf ngir amal lànket. Dox wàcci ci biir néeg bu fees dell ak propane dafay indi explosion ci ñeenti mekaniism:
- Bayyi interruptëru kuuraŋ bi ci kaw wala ci suufu eskalieru sous-sol bi: Soo baxalee interruptëru làmp bu 120-volt wala 230-volt ON wala OFF, kontakt cuivre yi ci biir boîte interrupteur bi dañuy defar arc électrique bu ndaw bu baxa. Sudee couche propane bi yéeg na ba yegg ci commutateur bi (wala sudee faat commutateur bi ci kaw dafay daaneel relais bi ci suufu kër gi), spark boobu dafay tàkk niir bu vapër bi yépp.
- Aparey yiy taal seen bopp: Doonte musul laal interruptëru làmp, sa sous amna lu mu néew ñetti aparey yu am kontakt kuuraŋ yuñ tëjuwul, ñu monte leen ci diggante 30 santimet (12 pouce) ci dër bi:
- interruptëru flotëru pompu karter bi mingi toog ci fos bi gëna suufe ci dëru sous-sol bi.
- lampa pilote bu taxaw ci chauffe-eau bi wala piezo spark igniter ñu ngi ko fikse ci 10 santimet (4 pouce) ci dallu dër bi.
- Congelatër bu nekk ci suufu suuf, frigo bieer, wala relais kompressër desumidificatër.
- Kuuraŋ statik bu bawoo ci yéere synthetik wala baayima: Dox wàcci eskalier bu wow ak chaussettes leen wala nga summi puloweer fleece ci hiver bi dafay defar 5,000 volt spark bu statik bu am lu ëpp milijoule yu doy ngir tàkk benn propane stoichirométrique.
- ** Jéema taal "fësal-fu" ndox pilote làmp sa bopp **: Benn ci senaario fatal yi gëna bari luy xew su boroom kër gise ni amul ndox mu tàng, wàcci ci suufu kër gi, gis làmp pilote ndox bi génn, ba noppi klike ci butoŋu piezo spark bu xonk bi, amul dumco propane bu gëna diis te lakku ñu ci suuf ci seen tànk ay waxtu.
Protocolu mucc jéego par jéego sudee danga jàpp ni propane bi dafay senn ci biir kër gi¶
- Bu leen génne ci biir néeg bi ak barab bi ngay raam: Bul musa wàcci escalier yi ci suufu kër gi ngir tëj vanne four bi, dindi dehumidifier bi, wala ngir xettali say bagaas.
- ** BULEEN ubbi palanteer yi ci biir **: Bi nga xamee ni ubbi palanteer yi yenn saa yi dañuy wax ci puffs burner waañ yu ndaw, toog 60 seconde ci biir néeg bu fees dell ak gaz di xeex ak palanteer yu tëju yi ci suufu suuf, daf lay jox ab aparey bu jege explosion asphyxixie-relay. Wutal nit ak baayima ci buntu kër ga ci saasi.
- Dox yéeg ak ngelaw: Ci biti ci ngelaw lu dal ci guddi (inversions température), ab propane bu mag ci biti buy senn ci liiñ buñ suulon wala ci regulatëru reservoir bi dafay wàcci ci foss yi, yoon wi ñuy jaar, ak miir yiy tëye ni dexu lay buñudul gis. Dox ci kaw ak ci ngelaw li 100 meetar (330 pied) soo sori ci tabax bi ak ci ravin yu woyof yi.
Plonge bu xóot 2: Ni ñuy tëjee reservoir propane bu bari ci dëkkuwaay wala silindre gril bu 20 livre¶
Bépp boroom kër buy jëfandikoo propane dafa wara génn ci reservoir bi tay ci leeralu bëccëg, nga wut vanne bu mag biy tëj suko defee ñu mëna ko tëj ci fukki seconde ci jamonoy jafe-jafe, taw ak ngalaw, wala suuf suy yëngu.
1. Tëj reservoir bu mag bu dëkkuwaay (120 ba 1,000 galon)¶
[UNDER THE BULK PROPANE TANK DOME]
+-----------------------+
/ Hinged Metal Dome \
+---------------------------+
| [Pressure Gauge] |
| |
| ( === ) <-- MAIN SERVICE SHUTOFF HANDWHEEL
| | | Turn CLOCKWISE (Right) to Close
| [brass valve] ----> [Copper Pigtail to Regulator]
--+-----------------------+--
/ Steel Tank Body \
- Jegeel ngelaw li rek: Balaa ngay dox dem ci sa reservoir propane bi nga nekk ci biti, taxawal 15 meetar (50 pied) ci sa wet. Saytu niir bu weex bu dëgër bu am vapër buy kondense buy wër tank bi wala suuf si, nga déglu bruit bu am doole buy yuuxu wala buy siif. Sudee propane bu ndoxe mingi génn ci vanne bu yàqu wala sudee lakk a ngi fépp ci wetu reservoir bi, BU LEEN JEGE; dellu ginaaw lu weesu 300m (1000+ pied) nga woo 911 / 112 / 999.
- Yéegal muur bi am dome asiye wala plastik: Ci kaw reservoir silindrik bu tëdd (wala bu taxaw) amna muur bu am charnière bu rond. Teg ci pin bi nga ubbi dome bi.
- Wut Roue de service Multi-Valve: Di nga gis ay raccords cuivre yu bari yu feeñ ci kaw reservoir bi (vanne bu mag bu am kap bu mboq, vanne bu njool bu am ressort ci digg bi, jauge flotteur circulaire buy wane pursàntaasu reservoir bi, ak ** tube pigtail en cuivre fin buy yóbbu ci regulatëru etape bu njëkk bi).
- Weer pënu loxo bi ci wàllu MONTRE (ci ndeyjoor) bamu nekk bu baax: Amul benn clé ci vanne biy serwiis reservoir propane (bu wuute ak kontëru gaz naturel). Jàppal pënu loxo bu rond bi, nga sol gant der sudee cuivre bi sedd na, nga wëlbati ko clockwise ("righty-tighty") wëlbatiku yu bari ba muy toog bu baax ba noppi taxaw. Loolu dafay xàjjale 100 pursaa ci ndox mi ak vapër bi ci biir reservoir bi ci sa tuyo yi nekk ci biir suuf.
2. Xool barbecue portable bu 9 kilogram (20 livre) / silindre RV buy senn wala buy lakk¶
Silindre portatif yi ñuy jëfandikoo ci gril gaz yi, chauffage patio yi, ak remorku RV yi dañuy njëkka génne ay senn ci ñaari balluwaay: benn hose regulateur en caoutchouc bu ñuul bu xar (bi squirrels wala jindaar yi di faral di sàqami ci hiver bi) wala ci biir Valve de Relief de Pression (PRV) capacity** te bàyyi ko mu toog ci jant bu tàng bi ci ete bi.
- Sudee silindre bi dafay yuuxu bu baax ci ginaaw vanne en cuivre bi (vantilaasioŋu vanne buy dindi pression bi):
- Bu reservoir propane bi tàngee ci leeralu jant bi, propane bi ci biir dafay gaawa yaatu. Sudee OPD (Aparey buy tere ndox mi fees lu ëpp) bi defoon njuumte moo may reservoir bi mu fees lu weesu 80 pursaa ci volume ndox mi, ndox miy yaatu amul fumu dem, moo waral pression bi ci biir reservoir bi di yéeg ba weesu 2,585 kilopascals (375 psi).
- Ci 375 psi, vanne de sécurité bi am ressort dafay ubbeeku ak HISS-POP bu am doole, ba noppi génne gaz propane ci jawwu ji ngir moytu silindre asiye bi dagg, ba noppi mu tëju su pression bi wàccee, baamtu simili yu néew yu nekk.
- Li nga wara def: Fatt bépp xal bu ubbeeku, sigaret, ak bépp lakk buy tàkk ci barbecue bi ci diggante 30 meetar (100 pied). Bul jéema tëj wala nga tëj vanne de soutien bi. Sudee silindre bi tàkkul, te mën nga ko sprey ci diggante 5 ba 10 meetar (16 ba 33 pied) ak hose jardin, sprey ndox mu sedd ci bitig reservoir asiye bi dafay seddal ndox mi ci biir, wàññi pression bi ci biir ci suufu 375 psi, ba noppi may valve bi mu sedd. Su demee ba xàddi, woo sa furnisër propane wala pompie yi ñu dindi deret ji ci anam wu wóor ba noppi sànni ci reservoir bi yàqu.
Plongeur bu xóot 3: Silindre bi tàng lool ak BLEVE (Liquid buy seey buy yaatal vapër buy kalaate)¶
Benn ci loraange yi gëna tar ci pompie yi ci dëkkuwaay yi ak ci àll bi mooy BLEVE (ñu koy waxe "blev-ee"): ab pompier buy seey buy yaatu. Xam physique bi gëna jubal ci ni tank propane di doxee, dafay leeral li tax doo musa yàgg ngir xeex garage, pond, wala broos lakk bu xal yi yeggee ci tank propane.
anatomie de 4 étapes de un reservoir de propane BLEVE¶
[HOW A PROPANE TANK BLEVE DEVELOPS]
1. External Fire Heats Tank ---> Liquid propane boils violently; internal
pressure hits 2,585 kPa (375 psi).
2. Relief Valve Pops Open ---> A 3-to-10-meter (10-to-33-foot) blowtorch of
fire roars out the top relief valve, dropping
the liquid level inside the tank.
3. "Wall bu wow" Steel Weakens ---> Below the liquid line, boiling propane keeps
Above the Liquid Line the steel cool. ABOVE the liquid line (the
vapor space), flames heat the dry steel above
600°C (1,100°F) until it loses 70% of its
tensile strength and bulges like a blister.
4. Catastrophic Split & ---> The weakened upper steel rips open; superheated
270:1 Flash-Boil Fireball liquid propane flashes instantly into a 100-meter
(330-foot) fireball and launches steel shrapnel
up to 500 meters (1,600 feet) away.
Màndarga yiy wane ni BLEVE mingi waaja am (Génn ci saasi)¶
Sudee lakk bu tàkk ci tabax, lakk buy tàkk ci oto, wala lakk buy tàkk ci ñax mu àll ba yegg ci reservoir propane bi ci biti wala silindre buñ mëna yóbbu, xoolal te déglu ñeenti màndarga yiy àrtu ci BLEVE:
- Valve biy dindi pression bi dafay tàmbali ak bruit bu motëru jet biy tëx: Su vanne biy dindi pression bi ubbeeku ci biir impingement lakk, dafay tiire torch bu taxaw bu am xal yu weex-orange yuy yuuxu 5 ba 15 meetar (16 ba 50 pied) ci jawwu ji. Bi vanne de soutien bi di def liggéeyam, mënul tere BLEVE sudee xal yi wéy di tàngal kaw bu waw bi ci kaw reservoir bi.
- Ton bu vanne de soutien biy yuuxu dafay wéy di yokk (Rising Whistle): Bi ndox mi di seey dem, reservoir bi di gëna tàng, yuuxu gaz biy génn dafay yokk bu baax ni bouilloire bu mag.
- Pentuur buy xolli, wala wen wu xonk/oraŋ buy melax ci kaw reservoir bi: Loolu dafay wane ni asiye vapër bu waw bi ci kaw niveau ndox mi mingi weesu 550 degre Celsius (1,020 degre Fahrenheit) te mingi ci ay segond balaa structure bi di toj.
- Diiru jottali xal yi direct ba BLEVE mën na gàtt 8 ba 15 simili: NFPA ak Departemaa Transport bu Etats Unis (DOT) Test yi dañu wane ni reservoir propane bu seddalul bu nekk ci xal direct mën na toj ci **1 simili.
Diggante yi ñu wara rawale ci reservoir propane yi am lakk (DOT ERG Guide 115)¶
- Soo bëggee am gril portatif bu ndaw bu 9 ba 45 kilo (20 ba 100 livre) wala silindre RV ci biir lakk: Rawal ku nekk 100 ba 300 meetar (330 ba 1,000 pied) fu sori te nga toxal **ci ginaaw liiñ bu jub ci masonry di xool garage buy tàkk wala barbecue, silindre yu 20 livre yuy rocket ci wet yi jaar ci ñag yi ak paraasu oto yi).
- Ngir reservoir bu mag bu 450 ba 4,000 litir (120 ba 1,000 galon) ci biir lakk: Rawal ci saasi 800 meetar (½ mile) ci bépp wet, te bul musa taxaw ci ligne ak **silind yu wër, ci biti ci axis bu guddu bi ci tank bi ci jamonoy rupture.
Deep dive 4: Yooni kaaraange propane ginaaw bimu doxee ak ginaaw mbënd mi¶
Doonte amul lakk buy tàkk, ñaari mbir yu ñuy faral di def ci kër gi, propane biy jeex ci hiver bi ak ndoxu mbënd miy yéeg ci reservoir bi ci biti, mën nañu indi loraange yu metti yuy yeex suñu ko jëfandikoowul nimu waree.
1. Lu tax nga wara MUSAA taalaat reservoir propane bu "jeex" te doo xool ndax amna fuy senn¶
Sudee sa reservoir propane bi amul dara ci diggu hiver bi (wala sudee danga tëj vanne reservoir bi ci jamonoy jafe-jafe): - Bépp làmp pilote bu taxaw ci chauffage ndox yu yàgg yi, chauffage espace yi, foyer yi, ak foyer yi dañuy fay, ba noppi ligne gaz yu am pression bu woyof yi dañuy gëna xëcc ci sedd bi. - Sudee dawalkat biy yóbbu gaal gi dafay feesal reservoir bi, wala sudee boroom kër gi taalaat vanne reservoir bi, te baña xool bu baax vanne bu nekk, ba noppi def test fuite de pression manometre (li NFPA 54 / Code National Fuel Gas sàkku), propane pilote bi lakkul mën na tuuru ci portu vanne bi wala ci ubbikaayu vanne bi. - Regle kaaraange: Sudee gaz bi jeexna ci sa reservoir, tëj bépp vanne bu aparey bi te nga wax teknisien propane bi am sertifikaa bi mu def test bu mat sëkk ci sistem bi, ba noppi taal bépp làmp pilote balaa ngay defaraat ko.
2. Regulateurs ak tank yu mbënd wala yu suul ci neige¶
- Fasal buntu regulatër yi ñu baña am neige ak glaas: Bépp regulatëru propane bu nekk ci biti amna buntu noyyig bu ndaw bu jàkkarloo ak suuf, mu am benn ekraŋ bu koy aar. Sudee neige bu tooy bu diis, taw buy gelé, wala bouchon bu glaas buy tëj ventilatëru regulatër bi, diaphragm bi ci biir mënul yëngu ngir yamale pression bi, yónnee liquid/vapeur propane bu am pression bu yéeg di dugg ci aparey yi ci kër gi, di naaw xal yu pilote yi. Broos neige bi ci sa dome reservoir ak sa regulatër ak balaas bu woyof (bul musa chip ci liiñ yu përëm yi wala regulatëri cuivre yi ak palaasu wen).
- Reservoir yuy féey su amee mbënd: Reservoir propane bu fees genn-wàll dafay féey bu baax, te dina féey ni liege ci 60 centimètre (2 pied) ci ndoxu mbënd, di dagg liiñ bu dëgër bi ci këram. Su amee àrtu ci mbënd, tëj vanne bu mag bi ci suufu dome reservoir bi balaa ngay génn, suko defee su reservoir bi di féey ba noppi dagg tuyo bi, propane du génn ci reservoir bi.
Limu xool kaaraange propane boroom kër¶
Aar sa kër ci pooling gaz bu gëna diis ak odorant fade soo defee limu saytu bu am juróomi poñ yii:
- Def UL 1484 detektëru gaz propane ci niveau DËR: Def alarm gaz explosif (ak batëri) 15 ba 30 santimet (6 ba 12 pouce) ci kaw dër bi ci sa sous-sol ci wetu chauffe-eau/four propane ak ci biir waañ wi. (Fatteliku: alarm saxaar ak monoxyde de carbon DU gis leak propane bu lakkul fileek amul benn xeetu CO + Gaz Explosif.)
- Bu leen musa denc silindre gril yu 9 kilogram (20 livre) ci biir kër, ci garage buñ takk, wala ci biir néeg: NFPA 58 dafa tere bu baax denc silindre propane yu 20 livre yuñ reserve wala yuñ dagg ci biir kër, ci biir kër, ci porche, wala ci garage buñ takk. Deel denc silindre portabal yi ci biti, ñu jub ci barab bu am lëndëm, bu am ngelaw lu baax, sori ci buntu wawalukaay yi ak palanteer yi ci suufu kër gi.
- Defal "Test bubble ndox ak saabu" pringtemps bu nekk ci kaw hose gril yi: Balaa ngay taal sa gril barbecue propane yoon bu njëkk sesoŋ bu nekk, jaxaseel 50/50 saabu ndox ak ndox ci biir butéelu spray, ubbi vanne cylindre bi ak regulator gril bi OFF, nga spray guddaayi brass bi yépp. Su amee ay bubble yuy màgg fépp ci wetu raccord bi wala hose bi, tëj vanne reservoir bi ci saasi nga wecci hose regulatoire bi balaa ngay dóor igniteur bi.
- Pentuur reservoir yu bari yi ci melo yi woyof, yuy seeral tàngoor: Reservoir propane yi nekk ci biti dañu leen di pente weex, xaalis, wala dóomu taal bu woyof ci yoon (NFPA 58) ngir seetlu radiaasioŋ jant bi. Bul musa pente reservoir propane bu wert bu lëndëm, bu ñuul, wala maron bu lëndëm ngir "kamouflage" ko ci sa ëtt; Pentiir bu ñuul dafay xëcci naaj wu metti wi ci ete bi ba noppi di yóbbu presioŋ bi ci biir reservoir bi ci kaw 375-psi ci poñ biy génne vanne de soutien.
- Marke sa dome reservoir bi ci suufu suuf ak neige bu njool: Ci gox yi am neige bu bari ci hiver bi, dawal 1.8-metre (6-foot) fibreglass buy màndargaal bu baax ci wetu sa dome tank propane ak regulator suko defee dawalkat snowplow yi ak snowblower yi duñu musa dóor liiñ bu përëm bi wala ñu suul regulator bi.
Jàngaleel njàngum kaaraange lakk ak paj mu njëkk
Xam ni ñuy xàmmee fu gaz bi di senn, def ab drill ngir rawale nit ci kër gi ci diiru 60 seconde, ak faj lakk bu tàng bi wala lakk bu cryogenic mën na muccal nit balaa pompie yi di ñëw ci àll bi. Tamal njàngum paj mu njëkk ak CPR ci Croix-Rouge wala St John Ambulance nga tàggat sa famiy ci barabu ndaje ci biti ñaari yoon ci at bi.
Laaj yi ñuy faral di laaj¶
How is a propane leak inside a house different from a natural gas leak?
Natural gas (methane) is lighter than air (specific gravity 0.60), so when it leaks it rises toward the ceiling and upper floors. Propane is 1.52 times heavier than air, meaning leaking propane sinks straight to the floor like invisible water, flows down basement stairs, and pools deep inside basements, crawlspaces, and floor drains. Because it pools at floor level right where water heater pilot lights, furnace igniters, and sump pump switches sit, a basement propane leak can detonate before anyone upstairs even smells a strong odor.
What is "odorant fade," and how can a basement fill with explosive propane without smelling like rotten eggs?
Propane is naturally odorless, so suppliers add ethyl mercaptan to give it a rotten-egg smell. However, if an underground propane pipe leaks outside your house, the surrounding soil acts as a chemical filter that strips the ethyl mercaptan out of the gas as the odorless propane travels along the pipe trench through your basement wall. Internal rust inside a damp tank can also oxidize the odorant. Because odorant fade can render a leak completely odorless, every propane home must have an UL 1484 explosive gas detector mounted within 15 to 30 centimeters (6 to 12 inches) of the basement floor.
Why must you never flip a light switch OFF or use a cell phone when evacuating a propane leak?
Propane ignites in air at concentrations as low as 2.1 percent. Flipping a wall light switch ON or OFF creates a tiny electrical arc between the brass contacts inside the wall box that is more than hot enough to detonate a room filled with propane vapor. Similarly, unplugging an appliance, pressing an electric garage door opener button, or dropping a non-intrinsically safe cell phone can produce an ignition spark. Leave all switches untouched and walk out immediately.
How do you shut off a large residential outdoor propane tank in an emergency?
Only approach the outdoor tank if it is upwind, not on fire, and not spraying liquid frost. Lift the hinged metal dome lid on top of the tank, locate the round brass or metal Service Shutoff Handwheel Valve connected to the copper outlet pipe, and turn the handwheel clockwise (to the right, "righty-tighty") until it stops. Unlike a municipal natural gas meter, a propane tank handwheel does not require a wrench.
Why should you never use a fire extinguisher to put out a flame shooting from a leaking propane tank unless you can shut the valve off?
While a jet of flame shooting out of a propane cylinder valve looks terrifying, that flame is safely consuming the escaping propane gas in open air. If you extinguish the flame with a dry chemical extinguisher while pressurized propane continues pouring out of the open valve, the unburned heavier-than-air propane gas will immediately sink, spread across the ground or into your house, and ignite in a catastrophic vapor-cloud explosion the moment it touches a distant spark or pilot light.
What is a BLEVE, and what are the warning signs that a propane tank in a fire is about to explode?
A BLEVE (Boiling Liquid Expanding Vapor Explosion) occurs when fire heats a pressurized liquid propane tank. Although the spring-loaded relief valve pops open to vent pressure, flames heating the dry upper steel wall above the boiling liquid level soften the steel past 600 degrees Celsius (1,100 degrees Fahrenheit) until the tank rips open, flashing all the liquid propane into a massive fireball in a fraction of a second. Warning signs of an imminent BLEVE include a deafening jet-engine roar of flame shooting from the relief valve, a steadily rising whistling pitch, and blistering paint or glowing metal on the upper shell. Evacuate 300 to 800 meters (1,000 feet to 1/2 mile) away behind solid building cover immediately.
Saytu nañu ay balluwaay¶
- Mbootaayu Aar ci Lakk ci Réew mi (NFPA, Etats Unis): NFPA 58 (Kodu Gasu Petrolier Liquéfié) ak NFPA 54 (Kodu Gasu Karburaŋ bu Réew mi: Natt fuy senn, xet guy jeex, ak sàrt yiñ tëral ngir denc silindre yi).
- Etats Unis, Kuréel giy saytu kaaraange ak loraange yi ci wàllu chimik (CSB, Etats Unis): Bulletin yiy wax ci wàllu propane Odorant Fade, Migraasioŋu tuyo yi ci biir suuf, ak explosion yi ci biir kër yi.
- Departemaa bi yor dem ak dikk ci Etats Unis (DOT/PHMSA), dem ak dikk ci Canada, ak Sekretariyaatu Infrastructure, Jokkoo ak dem ak dikk (Mexico): *Téere biy jàppale ci jafe-jafe (Gid ERG 115: Gaz yi - yu mëna tàkk, boole ci ndox yuñ seddal / LPG BLEVE Distance) Rawale.
- Xeetu Wérgi-yaram ak Kaaraange (HSE) ak Liquid Gas UK (Royaume-Uni): Jëfandikoo ak dencukaay bu wóor bu Gaz Petroleum Liquefied (GPL) ci biir kër yi ak ci barabi jënd ak jaay yi.
- Njàngale ak Konsilu Gëstu ci Propane (PERC, Etats Unis): Njàngale ci Kaaraange Propane Konsomatër, Mbënd ak Protokolu Reservoir Sedd, ak Tàggat BLEVE ngir Tontu ci Jafe-jafe.