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I N Te Rn Ation Al I S O پورتال تخصصی مواد مهندســی و فراینـــدهای ساخت و تولیـد www.asremavad.com https://t.me/asremavad I N TE RN ATION AL I S O S TA N D A R D 1 5 5 8 9 - 1 S e c o n d e d i ti o n 2 0 1 5 - 0 3 - 0 1 Pe tro l e um , p e tro che mi cal a n d n a tu ra l ga s i ndus tri e s — C a th o d i c p ro tecti o n o f p i p e l i n e s ys te m s — P a r t 1 : O n - l a n d p i p e l i n e s In du strie s du p étro le , de la p étro ch im ie e t du g a z n a tu rel — Pro tectio n ca th o diq u e de s systèm e s de tra n sp o rt p a r co n du ites — Pa rtie 1 : Con du ites terrestres Re fer e n c e n u m b e r I S O 1 5 5 8 9 - 1 : 2 0 1 5 (E ) I S O 1 5 5 89- 1 : 2 0 1 5 (E) C o n te n ts P a g e Fo r e wo rd .................................................. ................................................... ................................................... ................................................... ............................. vi I n tro d u c ti o n .................................................. ................................................... ................................................... ................................................... .. .. vi i 1 S c o p e .................................................. ................................................... ................................................... ................................................... .. .. 1 2 N o r m a tive r e fere n c e s .................................................. ................................................... ................................................... .............................. 1 3 Ter m s a n d d e fin i ti o n s .................................................. ................................................... ................................................... ............................. 2 4 S ym b o l s a n d a b b re vi a ti o n s .................................................. ................................................... ................................................... 5 4 . 1 S ym b o l s .................................................. ................................................... ................................................... ................................................. 5 4 . 2 A b b r e vi a ti o n s .................................................. ................................................... ................................................... ................................... 7 5 C P p e r s o n n e l c o m p e te n c e .................................................. ................................................... ................................................... .. .. 7 6 C a th o d i c p ro tecti o n c r i te r i a .................................................. ................................................... ................................................... 8 6 . 1 G e n e ra l .................................................. ................................................... ................................................... ................................................... 8 6 . 2 P ro te cti o n p o te n ti a l s ................................................... ................................................... ................................................... 8 6 . 3 Al te rn a tive m e th o d s .................................................. ................................................... ................................................... 1 0 6 . 3 . 1 1 0 0 m V c a th o d i c p o te n ti a l s h i ft .................................................. ................................................... .. .. 1 0 6 . 3 . 2 O th e r m e th o d s .................................................. ................................................... ................................................... 1 0 6 . 4 C r i te r i a i n th e p r e s e n c e o f a . c . .................................................. ................................................... ............................................ 1 0 7 P re- requ i s i tes for th e ap p li catio n o f c a th o d i c p r o te c ti o n .................................................. .................................... 1 0 7 . 1 G e n e ra l .................................................. ................................................... ................................................... ................................................ 1 0 7 . 2 E le ctri cal c o n ti n u i ty ................................................... ................................................... ................................................... 1 0 7 . 3 E le ctri cal i s o l a ti o n ................................................... ................................................... ................................................... .. 1 1 7 . 3 . 1 G e n e ra l ................................................... ................................................... ................................................... .. .. .. 1 1 7 . 3 . 2 L o c a ti o n s .................................................. ................................................... ................................................... .. .. 1 1 7 . 3 . 3 I s o l a ti n g j o i n ts ................................................... ................................................... ................................................... 1 1 7 . 3 . 4 I n te r n a l c o r r o s i o n r i s ks a t i s o l a ti n g j o i n ts .................................................. ........................................... 1 2 7 . 3 . 5 C o n ta c ts b e twe e n m e ta l l i c s tr u c tu r e s .................................................. ................................................... 1 3 7 . 3 . 6 E le ctri cal e a r th i n g s ys te m .................................................. ................................................... ............................... 1 3 7 . 4 L i gh tn i n g a n d o ve rvo l ta ge p r o te c ti o n .................................................. ................................................... .. .. .. 1 4 7 . 5 C o a ti n g .................................................. ................................................... ................................................... ................................................ 1 5 7 . 5 . 1 G e n e ra l ................................................... ................................................... ................................................... .. .. .. 1 5 7 . 5 . 2 Facto ry- ap p l i e d c o a ti n g s .................................................. ................................................... ................................... 1 5 7 . 5 . 3 F i e l d j o i n t c o a ti n g s .................................................. ................................................... ...................................... ........... 1 5 7 . 5 . 4 C o a ti n g for tre nch le s s p i p e l i n e s .................................................. ................................................... .. .. 1 5 7 . 5 . 5 A i r to e l e c tro lyte i n te r fac e .................................................. ................................................... ............................... 1 6 7 . 5 . 6 C o mp ati b i li ty o f c o a ti n g s a n d wr a p s w i th c a th o d i c p r o te c ti o n ........................................... 1 6 7 . 5 . 7 T h e r m a l i n s u l a ti o n .................................................. ................................................... ...................................... ........... 1 6 7 . 5 . 8 Re i n forc e d c o n c r e te we i g h t c o a ti n g .................................................. ................................................... 1 7 7 . 6 S e l e c ti o n o f p i p e tre n c h b a ckfi l l m a te r i a l .................................................. ................................................... 1 7 7 . 7 B u r i e d c a s i n g s for p i p e l i n e s .................................................. ................................................... ................................................ 1 7 7 . 7 . 1 G e n e ra l ................................................... ................................................... ................................................... .. .. .. 1 7 7 . 7 . 2 C a s i n g s th a t s h i e l d c a th o d i c p ro te cti o n c u r re n t .................................................. .............................. 1 7 7 . 7 . 3 C a s i n g s th a t p a s s c a th o d i c p ro te cti o n c u r r e n t .................................................. .................................. 1 8 7 . 8 E q u i p m e n t for th e r e d u c ti o n o f a . c . i n te r fer e n c e ................................................... ................................................ 1 8 7 . 9 E q u i p m e n t for th e m i ti gati o n o f d . c . i n te r fer e n c e ................................................... .............................................. 1 8 © I S O 2 0 1 5 – A l l r i g h ts r e s e r ve d i i i I S O 1 5 5 8 9 - 1 : 2 0 1 5 (E ) 8 B a s i c re qui re m e n ts for c a th o d i c p ro tecti o n d e s i g n .................................................. ................................................... 1 8 8 . 1 G e n e ra l .................................................. ..................................................
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