8/13/2019 How Do We Know We Have the Right Fitting

1/3

How do we know we have the rightfitting?thread378-37615

Foru

m

Searc

h

FAQ

s

Link

s

Job

sgeoffreydavies(Petroleum) 25 Nov 02 10:59

We have experie!ed "eld #ailure o a um$er o# $ra!h to header !oe!tio% ithi-"all pipe& 'he appli!atio i% 8-i!h $ra!he% o a 20-i!h #lare header "here$oth mai ru ad the lateral% are %pe!i#ied a% %!hedule 10 *r& 30+ %taile%%%teel&We have had our o" pro$lem% "ith "eldi* ad ,ualit !otrol i thi%material $ut "e have a %e!odar !o!er a% #ollo"%& 'he pipi* de%i*er ha%%pe!i#ied .Weldolet%. o hi% /' ad am a%%ured that the i%talled #itti* i% aproprietar oe "ith a P mar $ut am ot !ovi!ed that our !otra!tor%upplied ad i%talled the !orre!t #itti*& What ha% $ee i%talled loo% lie a%imple %leeve pla!ed over the $ra!h pipe ad ot properl !otoured to the mairu&

*ue%% "hat 4m looi* #or i% a pi!ture o# "hat "ould re*ard a% a .tpi!al.proprietar rei#or!emet #or the appli!atio&

'ha%

eo## avie%

Find A Job or Post a Job Oening !"ick Here#

mic$k(/e!hai!al) 25 Nov 02 11:5+

eo##.Weldolet%. %hould ot have the appeara!e o# $ei* %lipped over the $ra!hpipi*& 'hi% "ould !o%titute a %o!et "eld tpe #itti* ("hi!h am ot %ure exi%t%i that %ie) ad "eldolet% are $utt "eld #itti*%& 'he #itti* %hould havealo* "ithapi mar material ad %ie 820& Whi!h "eld% are #aili* #itti* to header or#itti* to $ra!h pipi*& $oth !a%e% "ould $e more proe to $elieve "eldpro!edure i% at #ault& # thi% i% a %o!et "eld %!eario ad the pipi* %ervi!e i% .hot.ma$e the $ra!h pipi* i% $ei* $ottomed out i the #itti* ot allo"i* #orthermal expa%io o# pipi*& 4ve %ee thi% !au%e !ra!% o %ome o# our a!eted$aoet%& have al%o %ee %team pipi* $lo" apart #or the %ame rea%o&

o ariep/aitea!e ad elia$ilit ept&;aer

8/13/2019 How Do We Know We Have the Right Fitting

2/3

(%imilar) proprietar $ra!h !oe!tio%&

% #or our !urret %ituatio 4d $e a little lear u%i* a "eldolet to !oe!t our 8.%!h 10 to 20. %!h 10& Weldolet% re,uire ,uite a $it o# "eld metal #or properi%tallatio& i*i#i!at di%tortio ad hi*h lo!al %tre%%e% !a $e !reated "he#a$ri!ati* %u!h a !o#i*uratio "ith thi "all pipe&

'homas$"(/e!hai!al) 26 Nov 02 3:25

Pipi* me!hai!al e*ieer

*eo##redavie%'hi% !otra!tor aparetl dit ot u%e a "eldolet& @o"ever do ot th a "eldolet i%the ri*ht $ra!h rei#or!emet #or 10 "all pipe&t loo% that "hat the !otra!tor did i% the ri*ht %olutio a#ter all providi* hemade thi% rei#or!i* %leeve #rom mai pipe material ("hi!h he pro$a$l did a% thi%i% the ea%e%t "a)

Sa"(i""a(du%trial) 10 Au 03 12:15

'here ha% $ee metio o# ot u%i* a "eldolet o thi pipe%& have %ee o

metio o# thi% #rom ;oe =&'he 20. %!h& 10 pipe ha% a "all th o# 1B+.&% thi% ot %u##i!ietC

have u%ed "eldolet% #or oii* 8. %!h& 10 Dth o# 0&1+8.E"ith 3. %!h& +0 pipe "itho di##i!ult&

hould i revi%e m pra!ti!e ad u%e a %"eepolet i it% %teadC

)S*+,-(/e!hai!al) 11 Au 03 7:51

alilla 'he pro$lem "ith u%i* Weldolet% o thi "all pipi* i% that the =a$ri!ator*eerall doe% ot #ollo" the Weldolet mau#a!turer% re,uiremet% a% re*ard%

amout o# "eld ad more importatl "eld pro#ile "ith the re%ult that there i% o#tea iheret .!ra!. at the "eld to 04let u!ture #rom "hi!h a !ra! !ould developad propa*ate& have %ee the re%ult% o# thi% i the pa%t ad am ver "ar o#%pe!i#i* "eldolet% #or !hed 10% pipi*& % ou %a a %"eepolet i% the $etteroptio (o po%%i$ilitie% o# poor "eld *eometrie%)& l%o a% hoie96 %a% "eldolet%eed a %i*i#i!at amout o# "eld metal to i%tall !orre!tl "hi!h "ill !au%edi%tortio o thi "all pipe&

.J!ronin(/e!hai!al) 11 Au 03 11:08

alilla

@ere i% m t"o !et%&&&&&&

'here are #or*edrei#or!ed $ra!h !oe!tio% made %pe!i#i!all #or !hedule 10pipe& 'he are made i 30+B316 $ W= o# @ou%to '&

% uder%tad the pro$lem "ith thi-"alled pipe i% oe o# maitaii* the !orre!theat duri* "eldi*& 'hi% i% parti!ularl di##i!ult "he "eldi* thi!er part% to 10&

;oth W= ad ;oe =or*e o##er pi!ture% ad dia*ram% %ho"i* "hat a properl"elded #itti* %hould loo lie&

http://www.eng-tips.com/userinfo.cfm?member=Thomasjlhttp://www.eng-tips.com/userinfo.cfm?member=Thomasjlhttp://www.eng-tips.com/userinfo.cfm?member=Salzillahttp://www.eng-tips.com/userinfo.cfm?member=DSB123http://www.eng-tips.com/userinfo.cfm?member=MJCroninhttp://www.eng-tips.com/userinfo.cfm?member=Thomasjlhttp://www.eng-tips.com/userinfo.cfm?member=Salzillahttp://www.eng-tips.com/userinfo.cfm?member=DSB123http://www.eng-tips.com/userinfo.cfm?member=MJCronin

8/13/2019 How Do We Know We Have the Right Fitting

3/3

# #ailure% are o!!uri* i a #lare header appli!atio do ou reall have a vi$ratio(explo%io) pro$lem C 'he mo%t liel pla!e a thi "alled $ra!hed %%tem "ill #ailuder %ho! or vi$ratio "ill $e at the $ra!h !oe!tio&&&&&% the %%temade,uatel %upported C

/ thou*ht% ol&&&&&&&&&&&&&

/A