cialis drugstore com can you only get pilex on prescription apcalis sx lowest price zestril overnight pharmacy cystone paypal colchicine to purchase without a prescription bactrim costo how old do i have to be to buy benadryl can you only get toradol on prescription uroxatral discount coupon diclofenac gel comprar anafranil without insurance calan buy on line cpt code for neurontin how many days should you take bactrim for a uti snovitra super power usa cvs prices propranolol high blood pressure dosage us pharmacy online aciclovir generic from differin fluoxetine 20mg capsules buy effexor xr without rx is it illegal to order generic forzest midamor amiloride canadien health mall.com buy brand lamictal paypal buy now button with return url buy vasotec online with mastercard biaxin cost comparison buy generic viagra in india cerazette and amoxicillin nhs robaxin 750 pharmacy that sells isoniazid where can i buy pain medication online pulmicort rx list buy estrace generic buy generic glycomet online cialis vs viagra reviews pharmacy buy voveran mg brand bupropion buy fml forte sold over counter best prices on ed drugs buy lotrisone cream online betamethasone to buy prednisone para que se usa motilium cheap generic xeloda acquisto celexa sicuro online drugs for sale illegal free or low cost procardia ditropan tablets price increase abilify puerto rico department of health board of pharmacy do i need a prescription for aygestin can you buy ditropan cheap online prescription amitriptyline acivir pills next day is diovan generic yet propecia to buy from europe yagara 10 mg cost when to take arimidex on cycle percentage of twins 100mg clomid fluconazole over the counter boots generic clomid for sale on line ic doxycycline mono uses how to purchase biaxin online side effects doxycycline hyclate 100mg capsules zoloft medicine interactions increasing lexapro dose side effects doxycycline medication alcohol amaryl medication order is enbrel better than methotrexate altace in the uk now buy probalan capsules brand name zestril online quinine malaria tonic how to get skelaxin on line costco pharmacy avandamet price difference between solodyn generic minocycline cipro drug in usa pharmacy buy tulasi online amazon costco pharmacy zantac price dilantin discounts coupons minocycline from mexico buy soft cialis buy generic cabaser levitra professional for sale buy betnovate australia where to get diflucan 200mg eldepryl overnight drugs prilosec discount alli weight loss buy amoxil online in usa prednisone doctors online what are the side effects of motrin comprar eldepryl original en madrid birth control pills premarin anafranil medicine online brand atrovent buy xeloda online pharmacy uk cheapest acai max cleanse where to buy protonix can you use beconase nasal spray in pregnancy no prescription myambutol furosemide buy no prescription how to use benadryl itch stopping cream lamictal generic cheap costs cymbalta class action lawsuit canada buy brand tretinoin 0,05 como comprar tegretol fluoxetine generico online himalaya septilin usa can you buy propecia emsam online pharmacy uk buy viagra professional tablets us canadian health authority guidelines best price lipitor canada no prescription neurontin sale metronidazole tablets 400mg phenergan non perscription countries cost of pamelor coreg medication buy erythromycin mg online evecare discount medications buy fucidin mexican pharmacies allopurinol pill shop discount code what is priligy pill floxin direct pharmacy aciphex pharmacy assistance bikes australia buy online buy finast boots levitra effects for women generic from prograf buy avodart 40 get risperdal las vegas hydrochlorothiazide spc lipothin visa buy albenza online albendazole prescription diprosone lotion betamethasone can buy zyvox online safe ceftin buy lithium australia price where purchase brand amoxil como comprar emsam diclofenac indian trade name best price for glycomet buy moduretic 50 viagra comprar brasil doxycycline cheapest site cost of orlistat without insurance ephedraxin in the uk otc pain meds not nsaids is aleve better than ibuprofen for muscle pain tadalafil no prescription haldol reviews for men cvs aspirin 81 mg tablet ec aricept from canada viagra paypal checkout diflucan usa pharmacy zentel tablets uk donde consigo las pastillas alli en mexico what is betoptic drugs canadian elimite tablet norvasc buy on line cost of dilantin where can i find viagra in india xalatan generic 2013 drugs vermox tablets for kids cialis prescription only how to use provera 10mg cheap v-gel pills ciprofloxacin hcl 500mg used for donde puedo comprar pilexil anticaida ciplox mail order what is doxycycline buy canada no prescription for viagra plus himcolin generic reviews lamictal without insurance diclofenac pot 50 mg tablet recommended dosage of lexapro for anxiety nimotop to buy from europe coreg over counter aldactone prescription only cordarone rx kamagra kaufen mastercard propecia reviews 2013 uk version of prometrium cheapest viagra pills trim active plus slimming tablets can youtube buy cialis soft in ireland pharmacy cheap genuine shuddha guggulu online recommended aspirin dose for stroke prevention arjuna canada online no prescription cheap uk rx alesse tablets levothroid shopping quiero comprar zithromax buy kamagra oral jelly australia 100mg buy bystolic prescription valtrex 1gm where to colchicine delivery accutane reviews 2012 generic for protonix 40 mg ultra low dose capoten pharmacy rx solutions tampa furosemide store apcalis sx buy on line ajanta viagra i pill blopress website cheapest roxithromycin to buy no rx suprax online how to purchase midamor online alli online mexico most reliable place to buy cytotec online buy phentermine online no rx where can you buy accutane detrol generic wikipedia drugs buying iv benadryl buying atorlip-20 buy silagra online usa chloromycetin discount trental tablets very cheap kamagra chewable where cane i buy alli cipro bay 1000 mg ventolin cost canada what is anafranil 25mg used for types of narcotic pain pills vpxl tablets on line to buy what is the dosage for unisom order cardura online generic colchicine taken off market prescription viagra australia buy antivert us cheap citalopram 20 mg while pregnant diovan pill canadian prof cilas wilders doxycycline coupon code flagyl side effects furry tongue rabeprazole sodium used for can you order pulmicort online medication where doo amaryllis grow cialis soft reviews for men buy cipro antibiotic rx relief pharmacy discount card review is viagra available in the uae eulexin shortage buy arimidex no prescription online cheap doxycycline canada price seroquel high dose is doxycycline a prescription drug prometrium 20mg tab blue pill for menstrual pain maximum dose of micronase trazodone mexico cialis professional to buy in the canada without a prescription pastas para adelgazar disgrasil over the counter discount buy avalide buy seroquel online canada echeck brahmi for men sale in uk prevacid for sale usa non generic serophene where can i buy viagra online forum online india order nizoral shampoo what does zovirax ointment do pill rx health amaryl products how to get lamisil celexa 100mg buy lipothin delivery uk arava tabletas 20 mg buy dulcolax hong kong extendaquin medication trimox online pay paypal genuine fucidin best price eldepryl prescription coupon online triamterene purchase what is skelaxin 800 cheapest prescription prevacid most reliable place to buy antivert online is generic motrin available in usa doxazosin in italia celebrex uk next day delivery buy diovan from mexico online trial erection packs 2 without a perscription what is diclofenac sodium used to treat canadian pharmacy buy avalide drug can you buy atacand without us without a script accutane mg visa buy colchicine ,175 no script can you buy celadrin prescription membership buy bystolic patch parlodel 5mg tablets side effects of atorlip-10 prednisolone tablets 5mg used trileptal and cold medicine research grade neurontin lexapro online canada pharmacy online generic pariet pharmacy has best price rumalaya gel where to buy code red 7 pill generic drug name nexium perrigo tretinoin cream .05 drugs for chlamydia zithromax hoodia sublingual dosage aceon tablet sale where to buy tetracycline uk bacterial mobic non perscription countries buy online in uk cheap kamagra glycomet tablets side effects mail order generic kamagra chewable aristocort cheap pariet side effects rash lamictal cost ampicillin usa cvs prices legal to buy motilium cialis how to get a prescription vermox online pharmacy shipped to canada where to purchase risperdal cheap now accutane without where to amaryl prescription drug buy tadapox online pharmacy long term side effects of ralista mexican pharmacies cialis eli lilly and company how to make nitroglycerin tablets explosive the evolution of a viagra salesman written by jamie reidy generic claritin us ventolin online forum buy lariam usa where to buy biaxin ointment neo-medrol acne lotion for sale clomiphene fertility stories aldactone without food cholestoplex pills sweat imitrex 50 mg tablets planting amaryllis outside in florida reliable canadian online pharmacies is there a generic brand for valtrex what is finast for accutane side effects exposed erythromycin best online non prescription pharmacy amoxicillin liquid online no prescription zyvox 600 mg pill generic drugs order aciphex medication by mail to buy risperdal lopressor for sale australia yasmin australia bayer viagra dose young men cheap skelaxin prescription lidocaine buy drugs online australia mail order prevacid vu pham ontario canada thundersky 100ah lithium ion lifepo4 battery buy requip mg what is trandate tablets no rx motilium online amaryl m 1 mg side effects ventolin hfa coupons 2012 buy lithium tablets uk deltasone precio mexico most reliable place to buy emsam online canadian alliance for development initiatives and projects cadip governmental advair diskus online ordering clomid 100mg success twins ibuprofen alcohol warning prograf lawsuit canada cardizem medication used to buy suprax in uk half price voveran sr does claritin cause weight gain can order cleocin gel canada getting high off gabapentin promethazine hydrochloride dosage retin-a 0,05 medicine children lithium grease wiki brahmi gadi katha movie online youtube what is the symbol equation for hydrochloric acid and calcium carbonate common side effects of dilantin canada pharmacies online that sell nexium acheter lamisil pas cher betnovate from europe order evecare online in usa asacol on line no script what is flagyl forte acheter revatio acai where to get buy fml forte hong kong chinese cheap provera 2.5 mg doxazosin cheap price buying aleve using paypal where can i get some anacin purchase saw palmetto viagra drugs online xeloda 40 mg pharmacy half price yasmin para que se usa el medicamento cephalexin discount zyrtec mg walmart generic drug list prices prescription solutions rx fax number max safe dose levitra fluoxetine for dogs no prescription cheap zyvox usa lamictal epilepsy treatment buy ketoconazole tablets generic hydrochlorothiazide losartan pilex fda approved to buy without prescription singulair 10 mg retail price purchase duetact lowest price pariet overnight shipping cheap order aleve tablets buy renagel tablets online valtrex ships from india how to by zofran online buy generic cialis in australia how to use elocon cream metformin capsules in stool nitrofurantoin alcohol where can i buy fluconazole cialis sales uk levitra generic intrathecal baclofen canada online pharmacy accutane can you get high off lamictal fml forte prices pletal generic cilostazol zetia ships from india zyprexa dosage and administration •doxycycline hyclate 100mg cost celebrex online forum naprosyn fast canada metformin hcl 1000 mg weight loss glycomet not generic worldwide pharmacy olanzapine exelon order canada mexican maxalt tretinoin 0,025 mail order best female viagra reviews clonidine western australia is generic zofran as effective 100mg viagra not working non generic cleocin gel buy cheap robaxin daily cialis and viagra teva propranolol lithium side effects rxlist montelukast spc emc can you buy antibiotics in spain over the counter cheap orlistat without prescription non prescription minocycline pharmacy is sinequan legal in uk is minocin legal in uk we nootropil prix en pharmacie en france levaquin cost without insurance viagra super active generic canadian pharmacy clomid no prescription lithium tab bass over counter zestril how to buy arava in london ventolin rotahaler discontinued what does digoxin do for atrial fibrillation glucovance online no prescription prometrium generic reviews rhine inc. india buy digoxin mg online seroquel for sale usa noroxin shoppers drug mart augmentin tablets 1 g what is avalide pills used for super active viagra super active online paypal what is erythromycin stearate 500mg used for viagra rezeptfrei kaufen schweiz erythromycin drugs class us online pharmacy no prescription baclofen discount azulfidine order gasex methotrexate overnight pharmacy skelaxin dose allopurinol prescription cheap cialis overnight no prescription brand toprol xl for sale tamoxifen medicine children buy periactin hong kong online pharmacy how does viagra work in the body is reminyl a prescription drug a good web page to buy atacand with no script prilosec lawsuit settlements generic zofran for morning sickness promethazine pills street value buy haridra uk very cheap bupron sr cost of diamox sequels cheap genuine casodex online effexor xr now can you get diarex what are the side effects of tricor diltiazem dose for atrial fibrillation low advair diskus available advair diskus billig kaufen fungsi obat pariet 20mg glucophage canada pharmacies do i need a prescription to buy viagra in australia yasmin indian restaurant bromley common price increase viagra cheap genuine asacol online clomid tamoxifen hcg pct what is the drug citalopram used for blopress price generic viagra "does not work" where to get clomid pct floxin ofloxacin tablets hyzaar prescription medicine buyers of nitrofurantoin canada bupropion depression dose online pharmacy nizoral pharmacy buy drugs paroxetine ordering cheap amantadine online canada pharmacy for cialis lowest priced keflex safe buy metoclopramide online clonidine noprescrition needed usa online pharmacy can you take rocaltrol daily is there a generic for tegretol xr mail-order voltaren celebrex over the counter substitute indocin prices cvs speman tablets purchase on line buy cymbalta with no rx pure acai berry reviews uk olanzapine 40 mg day plavix 75 mg pret compensat long time side effects doxazosin tretinoin 0,025 australia price very cheap motrin what does prednisolone do for kids proventil online usa no prescription best site to buy tenormin tenormin 50mg tablets hytrin coupon code buy trandate from mexico online dulcolax modo de usar price increase antivert where can i buy viagra in glasgow buspar depression forum generic retin-a 0,025 uk paypal flagyl er phone orders lukol spain depakote and sleeping pills cheap baclofen india ordering amaryl astelin available over counter tadacip 20 cipla uk is generic chloramphenicol effective what does erythromycin do to the body generic clomid over the counter para que se usa bactrim order pills.com review what is the safest online pharmacy order motilium canada awc canadian pharmacy buying finax in manchester clozaril generic name what drug category is prometrium is albuterol sold over the counter nystatin and triamcinolone acetonide cream vulva best online pharmacy generic brand cialis prandin phone orders vemox purchase mastercard legal buy tricor online canada is astelin over the counter drug nymphomax online australia maxaman pills duetact legal us sex power tablet for female what is ampicillin resistance gene how to by omnicef online celexa 20 mg missed dose cheap generic glyset buy dilantin 100mg avapro pills side effects bad side effects of lamictal low cost colospa order aceon 2 pharmacy female viagra from coversyl to buy in the canada without a prescription buy neo medrol uk acivir pills price india tegretol xr generic side effects benicar direct pharmacy periactin order order furosemide generic online pharmacy what is soft viagra prednisone dosage treatment hives where do american alligators live in generic doxycycline hyclate 100mg capsules best price erythromycin terabifine without prescription hcg weight loss injections purchase buspar medication addiction xl no prescription cheap innopran propranolol delivery cymbalta cash vytorin order propecia drugs aciphex 20 mg best price generic luvox switzerland ginseng where to get cialis super active fda approved to buy without prescription best price zebeta cheap estrace usa viagra triangle shopping genuine zenegra 100mg dramamine online pay paypal how strong is 100 mg viagra apo azithromycin 250mg side effects med cab indocin what does doxycycline treat in dogs sandoz lisinopril hctz picture flovent dosing in canada order non generic isoptin solumedrol sale tadalis sx pharmacy coupons buy zithromax 80 mg online omnicef pas cher italie abana sold over counter buy amitriptyline uk prescription combivent pills drugstore long term effects of anti anxiety medication viagra black stool buy tadapox 80 mg online what is exelon mg used to treat order generic zenegra phone in order for quibron-t advair 150 50 buy plendil online no prescription ditropan medication used where to get caverta bupropion xl side effects 300mg buy prevacid singapore avalide dosage forms where to buy vermox drugs online what is the dosage for glucophage generic nexium 2013 how to purchase zanaflex generic hydrochlorothiazide 25mg purchase seroquel 100mg online can clomid cause you to gain weight synthroid vs generic drug current price ginseng 2010 order venlor medication by mail propecia pills canada carbozyne side effects long term use finpecia generic propecia finasteride 1mg cheap dostinex buy online cipro now called altace hct uses low cost order avalide malegra 100 reviews purinethol delivery uk buy hyaluronic acid no prescription precio eutirox 100 cleocin without prescription medication effexor xr side effects sweating is risperdal a prescription drug order amantadine overnight roche accutane wiki nexium lawsuit case buy aceon online overnight what does famvir treat bentyl for sale uk best place buy flagyl er united airlines customer support number xanax effects on heart where to periactin in canada dilantin generic cheap costs what does proscar do med cabinet spray zenegra canadian pharmacy padre chelo 2012 order furosemide online generic lasix trazodone medication best pharmacy no prescription usa online drug shop tenormin from mexico order benfotiamine online premarin canada prices stromectol store buy allegra without rx overnight dosage of cytotec in abortion rabeprazole sodium vs omeprazole terramycin online pay paypal pariet tablet 20 mg what does wellbutrin do to dopamine best place buy chloroquine acai slim new zealand wellbutrin reviews weight gain air max 1 leopard grey buy dapoxetine online no prescription united states comprar cialis farmacia andorra promethazine codeine drug schedule long time side effects female cialis what is the generic for singulair cialis 2.5 is it illegal to order generic biaxin menosan max dose generic plavix manufacturer side effects of skelaxin lowest dose of tenormin long term side effects of famvir lynoral with paypal payment furosemide drugs testing buy cheap furosemide online didronel for sale australia buying canadian prescription drugs azulfidine not generic buy haridra inhaler canada buy betapace online canada buy cheap antabuse using pay pal viagra natural para mujeres recetas sinemet cost in canada low cost premarin tablets can i get high on propranolol generic toprol xl buy chloromycetin discount voltaren pills online in the uk safe buy antibiotics online decadron injection pediatric dose zofran pregnancy category australia ampicillin 500mg capsule dosage aspirin legal in england maxalt brand order can i get cytotec over the counter clomiphene 50mg tab cheap allegra uk buy paxil mg online actos without prescriptions phentermine side effects pregnancy what is etodolac used for to treat best place buy voveran pct online generic tofranil worldwide pharmacy motilium can you buy cholestoplex over the counter in germany femara drugstore trazodone price india xenical mg price dramamine generic drug citalopram hbr 20 mg tablet side effects natural doxycycline alternatives canadian pharmacy- aldactone metformin order in the us purinethol online coupon code indian generics online yasmin what is the correct dosage of viagra soft take clomiphene citrate 50 mg phone in order for digoxin buy toradol with e check cialis sublingual for sale allegra costco generic generic pharmacy franchise cost risperdal consta user reviews walmart pharmacy prednisone best site to buy rumalaya gel cheap lisinopril no prescription pills like amitriptyline safe to buy generic prednisone from usa accutane for mild acne side effects is viagra illegal in egypt cheapest cities to live in europe cost of xenical in nz alli 120mg generic for bactrim side effects online pharmacies without prescription paypal buy brand tricor how to take acivir pills mg bupron sr from canada dramamine 40 mg pharmacy acai berry cleanse coupons betoptic coupons wellbutrin brand name price combivent in croatia atrovent express canada bayer aspirin coupons 81 mg when does propecia go generic homeopathic viagra medicine what is the pill baclofen used for yasmin price non prescription nootropil buy online nexium generic can i order advair online plavix online without prescription ezetimibe 10 mg side effects generico do levitra no brasil aricept delivery uk canadian pharmacy online consultation buy zocor bulk benicar for men sale in uk canada buy effexor xr prescription overnight pharmacy xenical isotretinoin online uk buy sinemet no prescription fast delivery generic version ortho tri cyclen acheter alli angleterre synthroid and weight loss supplements unisom 48 tablets buy acai berry 500 stores where can i get tricor buy differin online without rx can you die from trazodone patients discount dutasteride starlix rx canadian online pharmacy for luvox what does diflucan do where to buy nexium canada prednisolone pregnancy safe getting promethazine in australia types of painkiller pills floxin canada no prescription carafate no prescription compare prices cefixime discounts codes rogaine 5 drugstore.com buying protonix for dogs glucotrol xl usa levitra no prescription needed fda buy glycomet online cheap micronase direct pharmacy tamoxifen pct anavar generic cialis (tadalafil) eldepryl shop net alli weight loss pill cost buy generic ditropan online no prescription best place to order coumadin in us genuine indinavir best price inderal tablets 10mg buy lasix in canada what type of medication is propranolol canada and actos cephalexin when pregnant mona morphine oxygen nitroglycerin aspirin order wellbutrin 100mg sr crestor tablets from buy lithium tab bruce lash diarex water pills reviews viagra plus now co uk order torsemide online uk cheap nizoral buy online what is mestinon viagra soft online using paypal what does lamisil do to the liver bipolar medication lamictal dosage topamax tablets suprax lowest price original norvasc online pharmacie en ligne france cialis doxycycline in india advair diskus uk online betnovate order on web long term side effects of omeprazole is viagra available over the counter in us liv tanning lotion cheap order ortho tri-cyclen overnight free coupons for avodart search mp3 songs unisom online order where to zyprexa cheap substitute benicar cheap diarex uk vermox canadian pharmacy buy acai berry in usa depakote drugstore com exelon online in usa can you buy zyrtec over the counter in germany why can t you buy claritin d over the counter indian altace 5 mg cialis canada online no prescription buy viagra in ireland saw palmetto tablets in bangalore ordering generic kamagra viagra how long does it take for flomax to start working canadian pharmacy online advair diskus cialis 36 hour cheap alli weight loss pills brand kamagra oral jelly for sale to buy cialis soft serophene without script buy tricor astrailia can you buy levitra plus in ireland 20mg bayer reviews on celexa side effects what types of didronel are there side effects of abilify 15 mg generic pills for mentat buy zithromax mg online for liv 52 tablets side effects healthy mango and banana smoothie recipe antibiotics side effects tiredness keppra spc low cost overnight bystolic compazine rx buy elocon cream online australia reminyl tablets uses prescription alli plavix for discount where do i atarax in canada buy methotrexate usa low cost overnight sarafem ordering caverta buy tricorn hat london olanzapine medicine side effects of metformin hcl 850 mg minipress online legally prescription drug zyban prometrium on line aciphex delayed release tablets drugstore low prices cardura online can i order methotrexate no prescription in the usa effects of metoprolol in pregnancy private canadian health insurance companies is it safe to order colospa use isoniazid coupon online viagra soft for men sale in uk side effects of long term sinemet use do i need receipt for viagra terramycin discount trental echeck merck singulair sales flagyl std buy legal drugs online uk haridra coupon code taking clomid cycle days 1-5 sample packs of viagra cialis unicare ireland pharmacy viagra professional 10 mg internet prescriptions without prescriptions quiero comprar fertomid order cheap sale arjuna all dosage online canada buy cheap advair diskus can you buy phenergan over the counter in the uk nexium mups 40 mg wellbutrin sr generic wikipedia drugs augmentin duo 1 gm resources for amantadine get prilosec las vegas fake percocet 512 where can i order diamox what does desyrel treat tramadol hydrochloride tablets online abortion meds coreg drug classification cipro for daily use canada saw palmetto coupons is mail order exelon safe buy florinef 50 what is citalopram 10mg for prednisone 20 mg tablets reviews on alesse 28 lisinopril 25 mg for sale buy desyrel 100 buy tetracycline ointment pharmacy lamictal pharmacy assistance atorlip-20 buy without effexor xr side effects uk avodart dosage azithromycin alcohol interaction 2.5 mg cialis side effects viagra without script viagor sex enhancer from canada prograf birth control online us cheap fast acting diet pills buy generic adderall uk buy albendazole online no prescription non prescription grifulvin v actos discount drug can i buy bactrim over the counter canadian online pharmacy for doxazosin cialis online canadian no prescription zyvox pharmacy prices list liv from europe cheap aciclovir 100 mg medrol pak prices percocet vicodin yagara bull one piece claritin dose for adults top pharmacies america propecia generico stilnox wiki fr erythromycin reviews for acne order kamagra by phone yasmin generic cost without insurance what is the drug cleocin used for dostinex supplier in uk rogaine results for men seroquel side effects forum buy fluoxetine hong kong ceftin drug class can you buy lamisil cream over the counter discount order colchicine online drugstore side effects of plavix in cats kamagra tablets uk how to import snovitra super power adam man vs food healthy nexium 20mg tablet i pill nitroglycerin website celebrex pas cher italie prednisolone for dogs to buy uk pharmacy american tretinoin 0,025 asthma symptoms in babies best site get prednisone finasteride 1mg generico mexico endep pill shop discount code fexofenadine dosage for dogs generic pills for myambutol lithium no prescription needed prednisolone canada pharmacy artane billig kaufen canadian doxazosin tablet oxytrol generic name long term side effects of flovent hfa ventolin hfa aerosol soln medrol generic 2013 drugs flagyl 400 wiki what does a celebrex pill look like cost of coumadin 2.5 mg micronase costco zofran from canada with no prescription my alli diet coupon phentermine reviews youtube pregnancy after provera pills can you buy isoniazid over the counter order cefixime lowest price etodolac mail order can you buy purinethol over the counter in germany buy exelon patch online no prescription american ginseng cost per pound antabuse from usa pharmacy overseas pharmacy no prescription astelin buy genuine phenergan uk seroquel maximum daily dosage best online pharmacy generic precose bristol-myers squibb graduate scheme silagra new zealand zyban prices usa rhinocort turbuhaler nasal purchasing relafen online uk effexor xr dose phenergan order canada diclofenac breastfeeding nhs how long for paxil to take effect bupropion billig kaufen biaxin reviews and dosage what are the side effects of too much aleve lincocin australia pharmacy current price betnovate can you buy acai generic medicine for prilosec buy cheap femara cheap furosemide no prescription fosamax 70 mg tablet class action lawsuit aciphex buy birth control pills online bupropion 100mg buy how much will apcalis sx cost indocin on line in the usa insulin pump therapy mobic overnight delivery how to make pomegranate juice without blender what does hoodia taste like olanzapine for men in usa pariet buy online uk buffett buy exelon zoloft 50mg price low price carbozyne uk alli coupon december 2012 chlamydia medicine online usa buy trazodone online at canada pharmacy how to import nizagara what is doxycycline used to treat in dogs brand name zocor online caverta sale soft buy viagra purchase abilify on line in the uk what is in the white yasmin pills is ceftin used for sinus infections prilosec otc australia azithromycin chlamydia where can i get female viagra pills how long does accutane take to work on cystic acne buy seroflo tablets online mobic for sale australia how to buy something with paypal without a credit card overnight cheap accutane prescription over the counter pills to delay period sales uk online cialis buy danazol online pharmacy buy yasmin online at canada pharmacy generic beconase aq overnite shipping naprosyn tablets for purchase can order precose canada pharmacy has best price ginseng viagra clinical studies terramycin ointment for sale ampicillin drug oversea how much does doxycycline cost at walmart prednisolone online usa asacol hd dr 800 mg tablet coumadin prescription help effexor xr dosage 300 mg buy asacol pills online buy salon shampoo online canada use tinidazole pregnancy what is fenofibrate used to treat amantadine 10 mg capsules side effects elavil for sale philippines order protonix 20 mg best site to buy aricept chloramphenicol side effects long term use buy viagra plus mg buy alli 5 buy vigara sydney online lopressor india top 10 online phexin sites forum online cheap aristocort without is aricept a prescription drug can you get c diff from augmentin metformin direct pharmacy stromectol over counter uk ginseng paypal strattera ships from india what does coumadin do to blood clots vantin phone orders warfarin dosing high inr nymphomax for sale australia artane shopping centre fluoxetine dose bnf +nexium 20mg capsule florida benzac purchase valtrex online cytotec misoprostol forum sominex woldwide shipping estrace 0.5 mg tablet celexa tablets on line to buy quibron-t coupon code is zanaflex available on line in canada allegra sale canada side effects of ic bupropion hcl sr avodart hair loss review where to buy alli online generic reviews on atrovent where to buy diclofenac uk le prix de xenical au maroc which has more side effects viagra or cialis nizagara drug oversea where to buy biaxin online without rx salbutamol inhaler over the counter uk buying canadian drugs in us buy cheap aricept online over the counter antibiotics for bacterial conjunctivitis buy cafergot no prescription online discount where to buy cheap diflucan 200mg diflucan generic vs brand best online pharmacies + uk buy cheap pharmacy alphagan ml relafen delivery information on seroquel medication can you order lopid benfotiamine shelf life amoxicillin trihydrate ca 500mg uses get calan toronto what is mirapex made of bystolic dosage 10 mg canadian alliance terminals ltd where to buy kytril drugs online zoloft weight loss side effects advair hfa prescribing information cheap generic pletal orlistat generic online what does viagra do yahoo buy dostinex cabergoline online zentel w zawiesinie ulotka order rosuvastatin online with visa best price for zenegra prednisone online store free coupon for avapro medicine calan v viagra blogspot diet pills phentermine reviews benadryl next day drowsiness i pill cabana website drug aristocort 5mg tablets i pill elimite website arimidex without prescription medication buy revia tablets online singulair delivered to your home levitra by bayer for cheap acheter pas cher zebeta doryx dr coupon methotrexate non perscription countries entocort results forum where to buy aleve ointment zestril to buy in australia buying clomid online uk low cost levitra can you buy flovent difference between glucophage and glucophage xr blopress on line in the usa mirapex bipolar reviews there generic drug cozaar diclofenac gel where to purchase what does keppra how to order betnovate can you buy rumalaya liniment in ireland atarax order by phone is cialis legal on canada buy stromectol uk cordarone cost canadian cheapest place to get doxycycline indian pharmacy actonel metformin limited india side effects of citalopram hydrobromide 20 mg antivert buy online us aldactone online pharmacy claritin d usage buy shuddha guggulu online canada no prescription leukeran for sale philippines what are the side effects of zoloft in children us pharmacy online pyridium buy glucophage with allopurinol for sale uk pantoprazole dose in children what is endep 25 used for billig imuran online kaufen no rx depakote online coumadin generic prices benadryl pills dosage adults plavix without a prescription cheap canadian kamagra no prescription what allergies does flonase treat nasal spray premarin paypal buy abilify 5 mg drugs purchase valtrex in usa levitra from usa pharmacy orlistat generico no brasil cafergot online overnight shipping ginseng dose maximum best price serpina sale altace cane you buy viagra over the counter in canada motrin with no rx inderal 10 mg side effects what does a low digoxin level mean buy hoodia online pharmacy can you buy aceon online perscription canadian arimidex tablet buy ventolin without a prescription from canadian pharmacy is aleve a prescription drug celebrex generic wiki buy periactin hong kong pharmacy jcb triderm mas'c' na co why has serevent been discontinued what does zetia do maximum dose hoodia buy adalat usa cod where do i vpxl in canada vermox fast india buy hair growth pills imuran delivery viagra price india usaa.com suppliers of benfotiamine in us lowest price for prevacid generic lasix drug buy glycomet 100mg online best place to buy sominex repaglinide prandin drug class tamoxifen without radiation crestor buy betnovate paypal accepted buy alli overseas what is the drug classification for diovan triamterene hctz drug classification where can i buy acai berry fruit resources for independent living inc richmond va lowest price betoptic valtrex online canada drugs valacyclovir price buy l-tryptophan buy benzac online tadapox to buy in australia how to get clomid with what does a 5 mg prednisone tablet look like costco price for cialis can you only get requip on prescription buy allegra overseas how to order proscar order acivir pills canada elavil dosage for ibs comprar brand levitra original cheap genuine serpina online metoclopramide hydrochloride 10 mg how to import yagara prometrium capsules ivf canadian pharmacy 24 hour drugs viagra online diclofenac gel without prescription canada how to order inderal treating scars after accutane viagra dosage and age can you get confido doxazosin online overnight how to get maxalt in australia ortho tri cyclen uk equivalent is there a generic form of entocort we buy alligators lupin launches generic tricor in us metformin price beat way to order flovent cipla india contact number where can i buy pain pills online cipro 1000 xl ciprofloxacin hcl 500mg what is it used for amsterdam pharmacy new york baclofen paypal hyaluronic acid pharmacy prices list does plavix patent expire do you need prescription for propecia in canada minocin antibiotic side effects imuran with paypal payment can you buy viagra soft in ireland prescription cheap best place to buy differin without a prescription generic for voltaren tablets what is cordarone 200 mg levothroid starting dose purchase clomiphene men what does zanaflex make you feel like motrin lawsuit 63 million is 20 mg of lexapro a high dose buy zetia online pharmacy betoptic no prescription canada when will generic prevacid be available order viagra on the internet where to buy viagra drugs online periactin sciroppo how to buy doxazosin sinequan pharmacy flagyl 4 days triamterene hctz 37.5 25 mg what does shatavari do for pregnancy indocin side effects diarrhea vendita viagra generico italia levothroid medication online what symptoms does zantac treat finast from india purchase celebrex on line in uk flovent medicine cialis super active on line in the uk zithromax 1000 mg for chlamydia side effects of lasix water pills red pill blue pill alice in wonderland ciplox generic equivalent can you buy penegra over the counter in germany cheap amantadine much does cialis cost private prescription aciclovir crema per herpes genitale which uk site to buy trental generic uroxatral effectiveness triamterene store can you buy requip in ireland differin fda approved to buy without prescription protonix oral uses safe to buy generic coversyl from usa buy combivent inhaler buy kamagra online no prescription uk comprar levitra andorra buy hydroxyzine online does the emsam patch cause weight gain side effects of doxazosin mesylate over the counter promethazine dm purchase amoxil on line in india buy diflucan over the counter prescription generic pills for femcare buy generic lexapro online no prescription ordering betnovate canada viagra products midamor buy online ireland buy viagra jelly in usa erythromycin without a prescription motrin tablets for children clomid for women over 40 atrovent pills can i get zyrtec discount code for kamagra gold generic propecia online uk aricept dosage 23 mg beconase aq 100mg cheep how to use xenical effective buy topamax online no prescription uk walmart generic for prilosec where to buy cordarone very cheap etodolac buy zerit online cheap can get viagra over counter boots online pharmacy forums reviews allegra owen claritin cheapest price kamagra 100mg cheap trental for sale australia toradol overseas adalat indian drama purim order in the us buy differin online cheap allegra low cost to buy acai singulair price cvs medrol tablets dogs isoptin side effects atrial fibrillation micardis 80 mg en espan~ol buy generic motilium online buy seroquel pills in the mexico prevacid otc side effects zyvox iv medication cialis next day delivery cost of cytoxan without insurance pariet cost canadian keflex online usa no prescription cozaar 100mg side effects where purchase maxalt buy himcolin paypal lady era lawsuit can you buy lotrisone over counter online pharmacy robaxin discounts codes bactroban pills sweat quibron-t tablets online online prescriptions australia can i buy gabapentin online list of tesco stores selling rogaine 2 ral viagra order zyprexa overnight nexium 100 mg difference between cialis and viagra and levitra generic cardizem cd la buy alli 120 120mg keftab roche precio argentina topamax purchase in canada no prescription what does lithium mean in evanescence song buy dramamine australia what is the starting dose for wellbutrin xl buy allegra d online how much does yasmin cost australia januvia tablets 100 mg liv 52 generic 2013 drugs roxithromycin without a script order non generic antivert canadian prescription services indian generics online cialis canadian pharmacy maxaman aspirin dosage recommended aspirin 1000 mg legitimate online pharmacies uk are alligators reptiles or amphibians cytotec on line no script benemid tablets buy carafate with visa eurax women buy official canadian pharmacy discount code safe order viagra canada lozol reviews what type of beta blocker is propranolol compazine in canada zantac dose for dogs colospa for daily use canada effects of buspar and alcohol aciclovir tablets bp 800 mg nexium drugstore com colchicine on line in the india best pharmacy to order benadryl best drugstore mineral foundation 2010 can you buy zovirax otc side effects of compazine treatment best overnight online pharmacy ordering estrace viagra levitra cialis which is better allopurinol online drugstore protonix dr 40 mg tablets atorvastatin side effects uk where to get beconase aq cipla inhalers asthma what is lamictal xr is there a drug comparative to doxycycline where to buy lukol drugs online suhagra buy usa elocon over the counter what is clorfenamina maleato buy luvox 100mg online generic zyprexa date best ed drug reviews female viagra sold over counter bipolar medication abilify mupirocin ointment over the counter american bupropion buy zoloft mg online for ceftin cheap uk strattera shelf life buy probalan boots cytotec philippines 2012 buy alligator gar meat pills is it safe to take a double dose of cialis buy propranolol 200 promethazine pas cher italie drugs without prescription.net augmentin cheapest rate canada pharmacy24hr buy eulexin 100 pharmacies store adhd styplon online usa procardia india lov cost motilium uk version of lamisil nymphomax tablets us online aristocort express canada neocell hyaluronic acid reviews prescription drugs online india indian viagra super active xeloda from canada prevacid ordering online pharmacy sales novartis diovan hct is ibuprofen better than aleve buy nizoral online cheap grifulvin v online pay paypal kytril buy online ireland voltaren cream active ingredients purchase generic decadron terramycin spray no prescription bystolic uk boots seroquel overdose mg buy allopurinol mg nexium prospect plicuri where purchase zyban yasmin overseas when is diovan generic coming out viagra 100mg price walgreens buying dostinex provera without a prescription from australia purchase nizoral online buy ventolin fast shipping can you buy betnovate online buy antibiotics online europe drinking on antibiotics amoxicillin avodart cost without insurance no prescription online pharmacy birth control how to use aspirin to pass drug test trazodone generic 2013 drugs buy cytotec from mexico online accutane buy online approved generic where to buy tetracycline online per pill hct sales cheapest benicar zyrtec tablets 10 mg dosage arava generic available unisom sleepgels australia long take tamoxifen pct us pharmacy online maxalt compare prices ceftin low blood pressure medication during pregnancy list of weakest to strongest bonds buy nitroglycerin in ireland carafate brands india tamoxifen citrate 20 mg tablet order diovan 80mg what does imitrex pill look like metformin price uk where to buy terramycin ophthalmic ointment 1 8 oz buying anafranil using paypal metformin from usa long term side effects of lopid bupropion tablets images canadian drugstore chain carafate prescription medication minipress mail order buy danazol without a prescription from canadian pharmacy best non prescription erectile dysfunction drugs france original levitra org shop india avalide price what is clonidine hydrochloride tablets what is the dosage for bactrim ds what type of medication is luvox trileptal in the uk now order lincocin from canada without prescription where to buy tamoxifen prescription micardis online meds kamagra comparison buy topamax paypal suhagra online no prescription order digoxin cheap lanoxin mg what is ic cephalexin 500mg used for allopurinol discount anti acidity zyloprim where cyklokapron legal to buy tetracycline citalopram in croatia free coupon for diclofenac best price for real diltiazem hydrochlorothiazide buy on line discount bupropion mg flovent side effects anxiety generic from medrol proventil without amoxil 500mg capsule cheapest aciphex in the uk dramamine and blood pressure medicine pantoprazole infusion indications why is there a shortage of lotrisone abilify pill canadian risperdal without use aciphex coupon online viagra commercial car suprax without prescription snovitra super power overnight delivery where can i buy alesse birth control organic india ashwagandha buy ranitidine 300 mg tablets retin-a 0,025 online cheap feldene low dose birth control can you buy xenical online no prescription 24h pharmacy croydon buy cheap viagra online canada buy phexin cheap where to buy flomax lamisil generic canada micronase how to buy what types of gasex are there birth control pills india how to import rumalaya forte viagra without perscription can you drink when your on antibiotics for chlamydia how to get propecia without a prescription cheap soft tab cialis cipro 500 mg price codeine promethazine syrup how can i get promethazine codeine prescribed zoloft 100mg not working champix nhs scotland gg 225 promethazine side effects ditropan generic 2013 drugs buy nizoral 40 buying triamterene in manchester sports direct shirebrook generic astelin available actonel ordering online pharmacy original zanaflex online claritin dose for 3 year old brand lotensin for sale cheap pharmacy schools in new york lexapro buy online uk how to get prometh with codeine cough syrup ampicillin medicine children singulair us sales asthma meds in usa no prescription amitriptyline 40mg synthroid refills discount code for erythromycin us pharmacy online floxin is it illegal to order generic aygestin overnight propranolol zanaflex medication on line normal abilify dosage what is risperdal used for in kids buy zyloprim from india 150 mg viagra overdose ordering diabecon complex rx strattera delivered to your home tadacip cost comparison cafergot tablets doctor order motilium tablets where to buy amantadine drugs online is plavix any better than aspirin allopurinol online overnight shipping bactrim ds 800 160 mg generic uk paypal aciphex prescriptions think advair diskus viagra 50 mg pfizer precio revatio with needed buy rosuvastatin online coupon code order 2 trial erection packs cialis pills x mg where to buy medications online prescription for viagra canada cialis in houston ordering tenormin on line order ditropan oxybutynin tablets lowest price viagra sublingual farmacie naturista online timisoara tretinoin 0,05 pills sweat buy effexor xr online usa hyzaar online pharmacy uk online united states pharmacy no prescription ordering low dose aceon how long does it take for bactroban cream to work what does propecia look like cialis tabletki powlekane discount canadian pharmacy orlistat atorlip-5 for sale australia what is urispas for what is the drug keppra for what is piroxicam 10 mg promethazine generic buying cymbalta in manchester purchase robaxin buy over the counter mircette online antabuse prescription alcohol most reliable place to buy promethazine online to buy endep glucotrol xl 10 mg production cost of lithium ion batteries what pills get you high list buy tenormin 200 nova puerto rico pharmacy crestor for sale usa can you get seroquel over the counter v-gel delivery uk online medication stores word search games for kids elavil generic cost what does lipitor do to your liver caverta online apotheke albuterol inhaler what is chlamydia test how to take lithium carbonate buy effexor xr online without prescription proscar cheap clarithromycin generic for biaxin drugs today india free download fluoxetine discount medications phenergan best price lisinopril and hydrochlorothiazide tablets usp 20 mg/25/mg fluvermal albendazole 20 mg ml lanoxin tablets uses cheap ranitidine pills lotensin with prescription buy clomid serophene pletal for daily use canada what is flagyl used to treat infection glucophage generic for buy zantac in bulk is it safe to order pamelor what is betnovate scalp application used for what drug category is bactrim buy tesco viagra online long time sex tablet name in india allegra 60 mg no prescription buy minipress low cheap price can order topamax canada non prescription colored contact lenses walgreens cialis cipla tadacip where to buy abilify online canadian pharmacy can you buy albendazole over counter omnicef in croatia why is generic lexapro so expensive drugstore coupon code 2011 all types brafix pills crestor prices costco erection packs 1 in usa kamagra prices uk avalide dose retin-a ge delivery keppra 100 mg m price wellbutrin xl price without insurance what is benzaclin gel used for glucophage shoppers drug mart costco pharmacy brand viagra price
Strona główna arrow 53/2/2008 arrow Poziom potencjalnego samozagrzewania węgla w świetle badań
 
 
Menu główne
Strona główna
Aktualny numer
Poprzednie numery
Do pobrania
Redakcja
Dla autorów
Prenumerata
Linki
Kontakt
Wyszukiwarka
Do pobrania
Category2014(40)
Category2013(93)
Category2012(73)
Category2011(56)
Category2010(59)
Logowanie


Nie mam hasła
Nie masz konta? Załóż sobie
Poziom potencjalnego samozagrzewania węgla w świetle badań PDF Drukuj Email

Poziom potencjalnego samozagrzewania węgla w świetle badań

Autor: S . Trenczek

Jednym z elementów zapobiegania pożarom endogenicznym jest rozpoznanie skłonności węgla do samozapalenia. O sklasyfi kowaniu pokładu do odpowiedniej grupy samozapalności decydują wartości wyznaczanych w czasie badań: wskaźnika samozapalności węgla Sza, °C/min oraz energii aktywacji utleniania węgla A, kJ/mol. Klasyfi kacja ta informuje, jakie jest prawdopodobieństwo uaktywnienie procesu samozagrzewania danego węgla w sprzyjających temu uwarunkowaniach. Nie może ona jednak stanowić kryterium ostatecznego, gdyż w rzeczywistości występowały i nadal występują pożary w pokładach węgla, sklasyfi kowanych zarówno do V, jak i do I grupy skłonności do samozapalenia. Świadczą o tym między innymi pożary endogeniczne z ostatniego dziesięciolecia (rys. 1, tabl. 1), z których ponad połowa (51%) zaistniała w pokładach węgla o bardzo małej i małej skłonności do samozapalenia (grupa I i II). Można więc postawić tezę, że taki sposób klasyfi kacji pokładów węgla nie oddaje w pełni poziomu potencjalnego zagrożenia samozagrzewaniem. Proces samozagrzewania jest rozłożony w czasie i składa się zasadniczo z trzech okresów (rys. 2).

Pierwszy okres – przygotowawczy, doprowadza w końcu do temperatury granicznej T1, leżącej zazwyczaj w przedziale od 60 do 80°C. Drugi – proces samozagrzewania, kończy się po osiągnięciu temperatury zapłonu T2, w której dochodzi do samozapalenia, a po nim, przy nadal sprzyjających warunkach, do pożaru – okres trzeci. Nie ma jednoznacznie określonej temperatury zapłonu, która dla węgla kamiennego wynosi od 270 do 350°C, natomiast przy uziarnieniu o średnicy 1 mm i mniejszej temperatury zapłonu są niższe, wynoszą od 190 do 220°C. Za standardową temperaturę zapłonu przyjmuje się Tz = 300°C, co przekłada się na standardową wartość graniczną wskaźnika Grahama wynoszącą co najmniej G = 0,03 (rys. 3).

W ocenie potencjalnych skłonności węgla na proces samozagrzewania powinny pomóc badania próbki węgla, pozwalające określić jego temperaturę zapłonu oraz odpowiadającą temu wartość wskaźnika Grahama. Jedne z pierwszych badań produktów utleniania węgla, dokonane prawie czterdzieści lat temu, pokazało, że jako pierwszy pojawia się tlenek węgla, a w dalszej kolejności wodór, propylen i etylen (rys. 4). Rozwój techniki pomiarowej spowodował, że obserwacja produktów utleniania węgla i zachodzących zmian ich stężeń jest coraz dokładniejsza – już w temperaturze 50°C pojawia się wiele więcej gazów niż wówczas sądzono, chociaż o małych stężeniach.

Badania przebiegu utleniania dokonano na próbkach węgla 20 pokładów, obejmujących wszystkie grupy samozapalności, a reprezentujących pokłady grup: libiąskiej, łaziskiej, orzeskiej, rudzkiej, siodłowej i gruszowskiej. Przeprowadzono je w laboratorium Zakładu Aerologii Górniczej Głównego Instytutu Górnictwa w Katowicach metodą kalorymetryczno-chromatografi czną. Różnotemperaturowe utlenianie badanych próbek węgla pokazało, że przyrosty stężeń gazów charakteryzowały się dużym zróżnicowaniem (rys. 5). Wykonane na ich podstawie obliczenie wartości wskaźnika Grahama (wzór 1) wykazały duże rozbieżności, pomiędzy standardową temperaturą zapłonu, a wartości wskaźnika Grahama (rys. 6). Temperaturę, w której w warunkach laboratoryjnych wskaźnik Grahama osiąga wartość standardową, graniczną określono jako temperaturę niestandardową zapłonu TNz. Natomiast wartość wskaźnika Grahama uzyskiwaną w warunkach laboratoryjnych w standardowej temperaturze zapłonu określono jako wartość niestandardową wskaźnika Grahama GNz. Rozbieżność ta dotyczyła wszystkich 20 badanych pokładów, a jedynie w przypadku pokładu 414 była ona minimalna (rys. 7).

Ponieważ do badań próbka węgla zmielona jest do średnicy 0,5 mm, czyli jest pyłem węglowym, odbiega ona od wielkości rzeczywistych, jakie najczęściej występuje w zrobach (od brył, poprzez kostkę i groszek do miału). Zostało to więc uwzględnione i skorygowane ocenie potencjalnego zagrożenia, poprzez przyjęcie niższej temperatury zapłonu rozdrobnionego węgla Tzrw = 200°C.

Wzbogacenie oceny potencjalnych możliwości rozwoju procesu samozagrzewania węgla polega na zastosowaniu klasyfi kacji podatności węgla na samozapłon. Wykorzystuje się w niej niestandardowość parametrów charakteryzujących samozapłon, poprzez wskaźnik utleniania niestandardowego węgla WUN wyznaczany według wzoru (2). Z obliczeń wartości wskaźnika utleniania niestandardowego dla węgli badanych 20 pokładów wynika, że wartości te mieszczą się w przedziale od 0,680 do 1,00. Jedynie dla pokładu 414 wartość ta wynosi znacznie powyżej jedności, to jest 1,475.

Na tej podstawie przyjęto następujące grupy podatności węgla na samozapłon:

– grupa I – WUN > 1,0 – samozapłon utrudniony,

– grupa II – 0,9 < WUN ≤ 1,0 – samozapłon standardowy,
– grupa III – 0,8 < WUN ≤ 0,9 – samozapłon ułatwiony,
– grupa IV – WUN ≤ 0,8 – samozapłon bardzo łatwy.

Porównanie badanych pokładów według podatności na samozapłon w stosunku do ich klasyfikacji pod względem samozapalności pokazuje inną hierarchię potencjalnego zagrożenia (tabl. 2, rys. 8).

Na podstawie powyżej przedstawionych wyników badań można uznać, że te właściwości węgla, które sprzyjają zagrożeniu pożarami endogenicznymi nie są jednoznacznie wyrażane klasyfi kacją węgli do odpowiednich grup samozapalności. Na pewno też tych właściwości jednoznacznie nie wyraża wprowadzona klasyfi kacja podatności węgla na samozapłon. Można jednak przyjąć, że wykorzystanie obydwu tych klasyfi kacji optymalizuje ocenę poziomu potencjalnych właściwości węgla sprzyjających zagrożeniu pożarami endogenicznymi. Będzie to najbliższe rzeczywistości, a przez to najbardziej reprezentatywne. Tak wyrażone wartości indeksacyjne składają się na indeks potencjalnego samozagrzewania IPS, który oblicza się jako IPS = WIgsi + WIpsi (wzór 3).

Dzieląc cały obszar indeksacji na cztery części, o równych zakresach wartości poziomów najwyższych, to jest grup IV i V (po 0,45) oraz nieco mniejszym zakresie wartości poziomu grupy III (0,35) i najmniejszej grupy I (0,30) uzyskuje się następujący podział potencjalnego samozagrzewania:

– I, poziom niski – 0,45 ≤ IPS I < 0,75
– II, poziom średni – 0,80 ≤ IPS II < 1,15
– III, poziom wysoki – 1,15 ≤ IPS III < 1,55
– IV, poziom bardzo wysoki – IPS IV ≥ 1,55.

Klasyfi kacja według indeksu potencjalnego samozagrzewania IPS pokazuje, że w grupie pokładów o wysokim poziomie (IPS III) znajdują się dwa pokłady sklasyfi kowane do II grupy samozapalności, natomiast w grupie o bardzo wysokim poziomie (IPS IV) znajdują się dwa pokłady sklasyfi kowane do III grupy samozapalności (tabl. 3).

Weryfi kację indeksu potencjalnego samozagrzewania przeprowadzono in situ. Uwzględniła ona pożary endogeniczne zaistniałe w ostatnim dziesięcioleciu (tabl. 4). W sześciu przypadkach pożar miał miejsce w pokładzie, którego węgiel jest przedmiotem badań i analiz (tabl. 5). W czterech przypadkach pożary wystąpiły w innych kopalniach niż kopalnie analizowane, jednak w takich samych pokładach, sklasyfikowanych do takich samych grup samozapalności węgla, co węgle pokładów badanych (tabl. 6).

Weryfi kacja pokazała, że sześć pożarów wystąpiło w pokładach sklasyfi kowanych do grupy IPS III, to jest o wysokim poziomie potencjalnego samozagrzewania, a cztery w pokładach sklasyfikowanych do grupy IPS IV, to jest o bardzo wysokim poziomie potencjalnego samozagrzewania. W grupach IPS I – o niskim poziomie, i IPS II – o średnim poziomie potencjalnego samozagrzewania nie wystąpił ani jeden pożar.

Ocena według indeksu potencjalnego samozagrzewania, uwzględniająca zarówno klasyfi kację według grup samozapalności jak i podatności na samozapłon, daje szansę właściwej oceny potencjalnego poziomu zagrożenia pożarami endogenicznymi.

 
« poprzedni artykuł   następny artykuł »