Professional Training Training and Consultation API 570 PREPARATORY 3 – 8 Sep05 Al!"#o$ar Al!"#o$ar Saudi Ara$ia
POI%TS TO RECA&& '(AY )* 1.
API 570 570 Code Code is appl applic icabl able e for for inspe inspect ctio ion, n, repai repairs rs,, alt alter erat atio ion n and re-rating of in-service , metallic piping.
2.
ASM ! "1." ASM "1." pipi piping ng is #sed #sed for for con const str# r#ct ctio ion n of new piping installation.
".
$e%i $e%ise sed d edi editi tion on and and add adden enda da of AP APII and and AS ASM M Code Codes s ma& ma& be #sed from beginning 'it( date of iss#e. !#t t(e& become mandator& from ) mont(s after iss#e date.
*.
+able ble A-1 A-1! ! of of ! "1." "1." Cod Code e gi% gi%es es 'eld 'eld oi oint nt #al #alit it& & fac facto torr for for man#fact#red pipes. +(e factor can be increased for lectric #sion 'elded pipes b& cond#cting additional radiograp(& /spot or f#ll as per +able +able "02.".*.
5.
Minim#m re#ire ired t(icn cness /tm for a pipe of o#tside diameter /, made from material (a%ing safe stress /S and s#bected to internal press#re /P is gi%en b&3 t m
'(ere
).
PD =
2( SE + PY )
+
C
4 'eld oint factor 4 material co-efficient /+able /+able "0*.1.1 C 4 corrosion and ot(er allo'ances
Ma6im# Ma6i m#m m all allo' o'ab able le inte intern rnal al pres press# s#re re for for a pipe pipe for for gi% gi%en en metal t(icness is 'ored o#t b& s#bstit#ting nett t(icness in !arlo' form#la and calc#lating t(e re#ired internal Press#re /P. /ett t(icness 4 A%ailable +(icness 8 Corrosion Allo'ance
7.
+(ic +(icn nes ess s of of a per perma mane nent nt bla blan n for for t(e t(e pipe pipe is gi%e gi%en n b&3 b&3
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Page ) of 3
Professional Training and Consultation API 570 PREPARATORY 3 – 8 Sep05 Al!"#o$ar Saudi Ara$ia
POI%TS TO RECA&& '(AY )* t m
=
dg
3 P 16 SE
+
C
9(ere, dg 4 t(e inside diameter of gaset :.
;&drostatic +est pr 4 1.5
× esign
pr 6 stress ratio
Stress ratio is ratio of material stress at test temp to t(e stress at design temp. Stress ratio is al'a&s greater t(an or e#al to 1. <. Pne#matic test pr 4 1.1 6 esign pr #ring pne#matic test a press#re relief %al%e /'it( set pr = 1.1 6 +est pr. s(all be installed. Press#ri>ation s(o#ld be in steps. Initiall&, press#re s(all be slo'l& increased to 25 psi or 50? of test press#re /'(ic(e%er is lo'er. C(ec for leaage, if an&, and correct t(em. +(ereafter, t(e press#re s(all be increased in steps #p to t(e f#ll press#re. Inspection s(all be carried o#t at esign Press#re. 10.
;&drostatic test is preferred o%er Pne#matic test. +(e b#tt oints '(ere ;&dro or Pne#matic test can not be performed, 100? $+ or @+ ma& be done on b#tt 'elds, and P+ or M+ ma& be done on ot(er 'elds /branc( 'elds, fillet 'elds, etc. as alternati%e to ea testing.
11.
If temperat#re 8 t(icness combination falls on or abo%e t(e material c#r%e /ig. "2".22, impact testing is B+ re#ired. /If belo' t(e c#r%e 8 impact testing is re#ired
12.
or impact testing " specimen are re#ired. If t(e a%erage of " specimen 4 $e#ired A%erage and Dal#e of onl& one specimen is less t(an a%erage b#t more t(an minim#m for one specimen E Accept /var/www/apps/conversion/tmp/scratch_4/338153047.doc 11/25/2016 / 7:37:37 AM /!"
Page + of 3
Professional Training and Consultation API 570 PREPARATORY 3 – 8 Sep05 Al!"#o$ar Saudi Ara$ia
POI%TS TO RECA&& '(AY )* 1".
If a%erage of " specimen 4 Minim#m for one specimen and a. Dal#e of one specimen is less t(an a%erage and also less t(an minim#m for one specimen E $etest b. Dal#e of t'o specimen is less t(an a%erage E $etest After retest, all specimen m#st (a%e %al#e # $
Avera%e &a'(e 1*.
+able ""0.1.1 gi%es re#ired and recommended pre-(eat temperat#re. $ecommendation becomes re#irement if ambient temp is F 0 G C.
15.
In dissimilar pipe oints (ig(er temperat#re of t(e t'o is to be #sed for pre-(eating.
1).
P9;+ +able /""1.1.1 gi%es temperat#re range, minim#m time and ma6im#m (ardness %al#es. ;ardness s#r%e& s(all be done for 10? samples for f#rnace P9;+, and 100? for local P9;+. --------------------------------------- nd ----------------------------------
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