ust & adore wen at aera tq are fatter STANDARD SPECIFICATION FOR NON DESTRUCTIVE EXAMINATION REQUIREMENTS OF PIPING Tacs [anus conven evo mea [EST] OS aeg | 18.04.95 [ISSUED IN CONFORMITY WITH STD PMS REV-2] MP AKG NS AS ov. a isin a sr anoAno oEEATEN sa [em [ern nie DATE REVISION ey | ohecxeo | convenon [Gaarmwan Si STANDARD SPECIFICATION FOR |___SPECIFICATION _| REV ENGINEERS INDIA LIMITED ION DESTRUCTIVE EXAMINATION 6-44-0016 4 REQUIREMENTS OF PIPING mer ariebe reproduced | tod CONTENTS TITLE i GENERAL. 2 VISUAL EXAMINATION 3. NON DESTRUCTIVE EXAMINATION 4. TABLE-I (with applicable Notes to Table-t) PAGE NO. STANDARD SPECIFICATION FOR NON DESTRUCTIVE EXAMINATION REQUIREMENTS OF PIPING ENGINEERS INDIA LIMITED ‘NEW DELHI SPECIFICATION _| REV 6-44-0016 4 Page 2 of 191. GENERAL. 1.1 SCOPE Tot be reproduced This specification covers the general requirements for the non destructive examination of shop & field fabricated piping, 1.2 RELATED CODES & ENGINEERING STANDARDS ’A4 210x297 Referred codes / standards are as follows. Latest editions of the Codes/Standards referred to shall be followed. a) ASME Boiler & Pressure Vessel Codes, Section V & VIII (Div.1) including addenda b) ASME B31.3 swar's express agracment at they ©) ASME BI6.5 & B16.34 4) ASTM E10 ©) Standard Specification for Piping Material 6-44-0005 f) Standard Specification for Welding 6-77-0005 8) Standard Specification for Fabrication & Erection of Piping 6-44-0012 h) Standard Specification for Pressure Testing of Piping Systems 6-44-0017 1) Welding Specification for the Fabrication of Piping 6-77-0001 j) Design Guide for Radiography Requirement 8-77-0010 2. VISUAL EXAMINATION 2.1 Weld shall be visually inspected wherever accessible in accordance with the following requirements ‘Property of ENGINEERS INDIA LIMITED. They are mer 3 2) Internal misalignment 1.5 mm or less b) Cracks or lack of fusion None permitted ©) Incomplete penetration Depth shall not exceed (For other than 100% ‘The lesser of 0.8 mm or 0.2 times thickness of radiography butt-weld) thinner component joined by butt-weld ‘The total length of such imperfections shall not exceed 38 mm in any 150 mm of weld length d) Surface porosity and Not permitted exposed slag inclusions (4.7 mm nom, wall thickness and less) STANDARD SPECIFICATION FOR |__SPECIFICATION __| REV ENGINEERS INDIA LIMITED NEW DELHI NON DESTRUCTIVE EXAMINATION 6-44-0016 4 REQUIREMENTS OF PIPING Page 3 of 193 ©) Concave root surface For single sided welded joints, concavity of the root e (Suck up) surface shall not reduce the total thickness of joint, z including reinforcement, to less than the thickness of : the thinner of the components being joined 2 | i Weld ripples irregularities 2,5 mm or less. 33 2) Lack of uniformity in bead 2.5 mm or less. 28 width a5 h) Lack of uniformity of leg 2.5 mm or less. * = Jength BB 1) Unevenness of bead 2.0 mm or less. gs j) Weld undercutting 0.8 mm or 1/4 thickness of thinner components #H Joined by butt weld, whichever is less. (shall be 3 smooth finished) : k) Overlap 1.5 mm ot less =e » Bead deflection 2.5 mm or less es m) External weld reinforcement and internal weld protrusion (when backing rings are not ae used) shall be fused with and shall merge smoothly into the component surfaces. The is height of the lesser projection of external weld reinforcement or internal weld nel protrusion from the adjacent base material surface shall not exceed the following limits: 33] Wall thickness of thinner Weld reinforcement or internal weld protrusion 26 component joined by butt (mm) max 23 weld (mm) 28] 32] 6.4 and under 16 se] Over 6.4 -12.7 3.2 BS Over 12.7 -25.4 4.0 2 Over 25.4 48 e| n) Throat thickness of fillet welds BE Nominal thickness of the thinner component x 0.7 or more. ©) Flattening Flattening of a bend, as measured by difference between the nominal oulside diameter and minimum or maximum diameter at any cross section shall not exceed 5 % of the nominal outside diameter of pipe P) Reduction of wall thickness Reduction of wall thickness of a bend, as measured by difference between the nominal thickness and minimum thickness shall not exceed 10 % of the nominal wall thickness of pipe STANDARD SPECIFICATION FoR |__SPECIFICATION _| REV ENGINEERS INDIA LIMITED | NON DESTRUCTIVE EXAMINATION 6-44-0016 4 REQUIREMENTS OF PIPING eager3 ‘xpress agreement Futea)-s07 Ad =y of ENGINEERS INDIA LIMITED. Th nya written co 22 3 3.2 33 Welds having any of imperfections which exceed the limitations specified in various clauses of 2.1 shall be repaired by welding, grinding or overlaying etc. Number of times of repair welding for the same weld, however shall conform to applicable notes to Table 1- Note 6(b)b.5 NON DESTRUCTIVE EXAMINATION ‘The type and extent of weld examination shall be in accordance with Table-1. All visual and supplementary methods of girth weld examination shall be in accordance with ASME B31.3 and the requirements of this standard, ‘Welds between dissimilar materials shall be examined by method & to the extent required for the material having the more stringent examination. Certain categories of critical piping are classified under inspection Class IV (100% radiography) as follows: a) High Pressure Classes above 600 # b) Severe Cyclic As defined by ASME B31.3. ©) Low Temperature Below temperature of -45°C & all materials. 4) Critical Service Hydrogen, Oxygen, NACE, Caustic, Chlorine & such other critical services. ©) High Alloys 5 Cr & above for all pressure classes. ) High Temperature Above 500°C ENGINEERS INDIA LIMITED NEW DELHI STANDARD SPECIFICATION FOR |__SPECIFICATION | REV NON DESTRUCTIVE EXAMINATION 6-44-0016 L4 REQUIREMENTS OF PIPING Page 5 of 18[REV [4 Page 6 of 19) SPECIFICATION 6-44-0016 STANDARD SPECIFICATION FOR NON DESTRUCTIVE EXAMINATION REQUIREMENTS OF PIPING 1: SSVI NONOSdSNI NOLLVNIAWX4 (THM dO LNILXA F SdAL “SSVIO | 1 TEV (sjou aqquondde qua) -ATAVL 262x012 PY LOs-1P9L-Ua seth eyt Wawoaibe ssordxe &,Ja%s0109 40 D9 ‘poanposdes oq ENGINEERS INDIA LIMITED NEW DELHI Ssam r emnos | catos | estos] ssa IL: SSV19 NOLLIG4SNI (G.LNOD) NOLLVNINVXA TAM AO LNALXS 7% Td AL “SSVTO | 1 ATV. usex01z aun 24 205-19) lg0iDe ss0xceo s,20m0109 By) YO PeULO} AjHOW B18 ABUL “CLINT WICNI SHINIONS Jo Auodosd ay} ove eU REV Page 7 of 19 ‘SPECIFICATION 6-44-0016 STANDARD SPECIFICATION FOR NON DESTRUCTIVE EXAMINATION REQUIREMENTS OF PIPING ENGINEERS INDIA LIMITED NEW DELHI @REV 4 Page 8 of 19 ‘SPECIFICATION 6-44-0016 STANDARD SPECIFICATION FOR NON DESTRUCTIVE EXAMINATION REQUIREMENTS OF PIPING Il = SSV19 NOMLOGASNI (G.LNO) NOLLVNINVXS (TAM IO LNSLXS % Gd AL 'SSW19 | 1 TTAVL ipoonpoxsor a9 262%0. fog bY 1091991113 “9 wowaerbe ssexdxo s,s0mo110 ENGINEERS INDIA LIMITED NEW DELHI ©REV Page 9 of 19 ‘SPECIFICATION 6-44-0016 STANDARD SPECIFICATION FOR NON DESTRUCTIVE EXAMINATION REQUIREMENTS OF PIPING (GLNOD) IIL: SSV19 NOLLOAdSNI (GLNOD) NOLLWNINWX4 CTAM AO LNALXA IAAL “SSVTO: | ATAVL ENGINEERS INDIA LIMITED NEW DELHI S(GLNOD) Ill: SSVTD NOLLIGdSNI (G.LNOD) NOLLVNINVX4 OTAM dO LNALXS P AdAL “SSWT9 | 1 ATAVL REV 4 Page 10 of 19 ‘SPECIFICATION 6-44-0016 STANDARD SPECIFICATION FOR NON DESTRUCTIVE EXAMINATION REQUIREMENTS OF PIPING $Y £09-1991-713 “28n papuow ai 10) somo uowisaibe ssaKx9 s s0Mmouoq auf UO PauEe} A) 1uasv0D UIA ® Aa p 218 AYL “O3LINT VIGNI SU33NIONG Jo AUodoxd ay} ave Yewto} Sx UO UOAI SHELOp puE UBI=H ‘CuImesP a4. ow x2 “posh 2 poise RS INDIA LIMITED NEW DELHI @ ENGINE!REV 4 Page 11 of 19 ‘SPECIFICATION 6-44-0016 REQUIREMENTS OF PIPING STANDARD SPECIFICATION FOR NON DESTRUCTIVE EXAMINATION (Q.LNOD) III | SSV19 NOLLOTASNI (“GLNOD) NOLLVNINVXS GTM dO LNILXA P dd AL “SSVIO © | ATEVL 9 paidos naezn ENGINEERS INDIA LIMITED NEW DELHI Speanpoxdes aq rou ‘out 1842 wautoaibe sseicxe 5,30%01109 out Ble]? « 3 2] |8] e/g)" 3/8 = AB = & z eo REg 2 52: eee cath] suo] cauow ] cain | caton | caion 5$4 ‘ero 2% wou ven] vr | ww ; cua sone ng venver oer! 8 25 Hee ‘ gee one ae Vettes wv 00 vas ah g wer | seo | sont YEN | asdev | ow saan | samt | a3 20g 7 - - gon 7 7 7 — a t > TF 7 z Bz Taare Tao °2 wrtgr | Naa | Sen | “cae | ine 3 vonievt | sonia | soviiw | asses | inns a : (csi sv> = severe GRR TaN TONAL ‘oat wat | oovs | ami | ones | ote = ze AL: SSV'1D NOLLOAdSNI a i 23 (GQLNOO) NOLLWNINVX4 TAM JO LNALXS 9 TAAL 'SSV1O 1 TEV ee a i= Go 2 &@)+|? zI*]s al |? ale s/8 ale 5 «& = aie Lee age |u| a |e ot 232 [|e REE wa : Sx5 : » | sau) sous zu wee | canvas cue soot oon | snatenorse BEG : . Sos : fe con i ~ = iF = woe i £53 : 7 gag - a 7 : 7 : — 7 : t zou 5S am °2 ao nak a i ste & = S68, | sos0 i g Saar Gian a aitonw | 2a = 5 5 st (°GLNOD) Al : SVT NOLLOAASNI Bz 2 (CGLNOD) NOLLVNINVX CTEM JO INILXG 9 UAL 'SSVTO | 1 TTYL ae o 2 a 2 a 2h WO pauioy AYU ave AANL “GLIA WIG SUBSNIONG Jo AUodes! By 0 18} S41 UO LOMB SIE. p Ce)[REV Page 14 of 19 SPECIFICATION 6-44-0016 REQUIREMENTS OF PIPING STANDARD SPECIFICATION FOR NON DESTRUCTIVE EXAMINATION (°GLNOO) Al: SSV19 NOLLOAdSNI CGLNOO) NOLLYNINVX4 OTAM JO LNALXA ® AdAL “SSVTO * 1 ATEVL {62x01 vy Los-IPa ays eur wuowaaibe ssoudxa 5,1 yosdes 2q 104 ENGINEERS INDIA LIMITED NEW DELHI Szlele wl? c 3 z| | 4 Fg 9/9 E a3 2 5 «& : = ty 58 sos 7 Beg 232 el lee 52: Esa a a an 009 saunas siu ome = O86 gee oa i Ss eevee 2 : a st | ate BEG 5o8 = Cn ie os ee : aug 7 ry tr 7 7 7 * . * gag 2 ; 7 : zoe z ae] rae 5S 2 (NOD) AL: SSV19 NOLLOAASNI (GLNOD) NOLLVNINVXS GTM HO LNILXS AdAL “SSVTO TaTav ‘peonpoidos aq 104 ENGINEERS INDIA LIMITED NEW DELHI ©Applicable Notes to Table-T 1 Branch welds shall consist of the welds between the pipe & reinforcing element (if any), nozzles & reinforcing element and the pipe & nozzle under the reinforcing element Reinforcing element to be interpreted as pads, saddles, weldolets, sockolets ete Seal welds of threaded joints shall be given the same examination as socket welds. Unless specifically stated, all materials shall be for "Non-IBR™ service. 4. The Magnetic Particle & the Liquid Penetrant method of examination shall be in accordance with Section V of the ASME Boiler and Pressure Vessel Code, Article VIL and VI respectively. The entire area of the accessible finished weld surface shall be examined Selected root runs, subject to a maximum of 10%, before finished weld, may also be examined, at the discretion of the engineer-in-charge. a) Wherever MP / LP testing is specified, either MP or LP test may be used. But wherever only MP test is specified, MP method of examination may be used only if MP examination is impracticable in the field as concurred by EIL site-in charge. intended use, EiL-1641-307 Ad 210x297 b) ‘Random 10%" of Liquid Penetrant / Magnetic Particle test shall mean testing, by applicable test, one weld for each ten welds or less made by the same welding procedure or operator or both. Similarly "Random 20%" shall mean testing, by applicable test, one weld for each five welds or less made by the same welding procedure or operator or both. 1 borrower ©) When Liquid Penetrant examination is specified, the surface shall be free of peened discontinuities. Abrasive blast cleaning shall be followed by light surface grinding prior to Liquid Penetrant examination. 4) Inspection shall be performed in the welds excluding those for which radiography has been done. €) Girth weld, branch weld, attachment weld & socket weld of 3-1/2 Ni steel shall be Liquid Penetrant tested only when welded with austenitic material where MP test has been specified. 5. Radiography a) andom 10% or 20% radiography" shall mean examining not less than one from each 10 welds or less in case of "Random 10% radiography” or one from each five welds or less in case of "Random 20% radiography” made by the same welding procedure or welder or both, Irrespective of percentage. no. of welds to be radiographed shall be minimum 1. However first two welds made by each welder shall also be radiographed in case of "Random radiography”. Welds selected for examination shall not include flange welds and shall be radiographed for their entire length. However, where it is impossible or impracticable to examine the entire weld length of field welds for either random or 100% radiography, and if the same impossibility is agreeable to EIL site-in- charge, then a single 120 deg. exposure of the weld length may be given a Magnetic Particle test or Liquid Penetrant test However in such cases for ferro-magnetic materials, only MP test shall be acceptable for classes higher than 600# ed, except ‘oxhibited o STANDARD SPECIFICATION FOR |__SPECIFICATION __| REV ENGINEERS INDIA LIMITED | yon DESTRUCTIVE EXAMINATION 6-44-0016 4 eee REQUIREMENTS OF PIPING Page 16 of 19b) —_In-process examination shall not be substituted for any required radiographic examination. ©) Number of radiographs per one circumferential weld shall be as per ASME Sec.V Articles 2 and 22. 6. When radiography or other non destructive inspection is specified, acceptance criteria for repairs or defects shall be as follows: a) In _case of 100% examination, any unacceptable weld shall be repaired and reinspected b) If required random examination reveals a defect requiring repair, then b.1 Two additional examinations of same type shall be made of the same kind of item (if welded joint, then by the same welding procedure or operator or both). b.2 If the group of items examined as required by b.1 above is acceptable, the items requiring repair shall be repaired or replaced and reexamined as required and all items represented by this additional examination shall be accepted. b.3 If any of the items examined as required by b.1 above reveals a defect requiring repair, two further comparable items shall be examined for cach defective item found by examination. b4 If all the items examined as required by b.3 are acceptable, the items requiring repair shall be repaired or replaced and reexamined as required, and all items represented by this further examination shall be accepted. ame weld before b.S Number of times repair welding could be done for the acceptance shall be as follows: Material No, of times repair welding is allowed C:S. upto 300 # 3 or less CS. above 300 # 2 or less Killed steel 2 or less Low alloy steel 2 or less Austenitic $.S. 2 or less 3.5 Ni steel 2 or less Al & Al base alloy 2 or less Cu & Cu base alloy 2 or less Others 2 or less STANDARD SPECIFICATION FoR |__ SPECIFICATION REV ENGINEERS INDIA LIMITED | yo DESTRUCTIVE EXAMINATION, 6-44-0016 a Cee REQUIREMENTS OF PIPING Page 17 of)b.6 Welds not found acceptable for allowed number of times of repair as per b.5 above shall be replaced and reexamined. b.7 If any of the items examined as required by b.4 above reveals a defect requiring repair, all items represented by these examinations shall be either: repaired or replaced and reexamined as required - fully examined and tepaired or replaced as necessary, and reexamined as necessary Hardness Test a) Hardness test for each weld (unless mentioned otherwise in NDT Table-t ) shall be im accordance with ASTM specification E10, ASME B31.3 and as called for in NDT Table-V/PMS(Piping Material Specification), and shall be made after final heat treat ‘ment (wherever heat treatment is specified in welding specification). All welds which are given heat treatment shall be hardness tested, A minimum of 10% of welds of hot formed and hot bent materials in each heat treatment batch which are furnace heat treated and 100% of those which are locally heat treated, shall be hardness tested. The hardiness limit applies to the weld and heat affected zone. Hardness tests of the heat affected zone shall be made at a point as near as practicable to the edge of the weld One test per weld shall be performed b) Hardness test where specifically called out in Table-I of NDT or in PMS, shall be carried out irrespective of thickness and to the extent (éage) as mentioned therein. ©) For C-0.5 Mo steels, a minimum of 10% of welds shall be hardness tested. 4) Following hardness values shall be maintained Base Metal Group Maximum Hardness (BHN/RC) cs 238BHN/RC22 CS (NACE) 200BHN Cr 0.5% oF less 225BHN Cr >0.5% & upto 2% 225BHN Cr 2.25%-3%(C < 0.15%) 241BHN Cr 2.25%-3%(C > 0.15%) 241BHN Cr 53% & upto 10% 241BHN 18/8 SS (NACE) RC22 ©) Incase hardness values are mentioned in both welding specifications (6-77-0005) & table given in Note-7(d), the lower of the two values shall be applicable STANDARD SPECIFICATION FoR |__SPECIFICATION | REV ENGINEERS INDIA LIMITED | WON DESTRUCTIVE EXAMINATION 6-44-0016 4 REQUIREMENTS OF PIPING eisai5 8. For IBR service lines, following IBR requirements shall apply in addition to the notes 4, 5, B 6, 7, 12 and Table I. In case of conflict between above notes and these requirements, the more b stringent ones shall apply. IBR piping shall be erected of IBR inspector approved material and 7 construction procedure. Erected piping shall be hydrotested, inspected and approved by IBR inspector. 3 a) Piping over 102 mm (4") bore 5 10% of welds made by each welder on a pipeline with a minimum of two welds per z welder, selected at random, shall be subjected to radiography : b) Piping 102 mm (4") bore and under, but not less than 38 mm (1-1/2") bore BB ‘Two percent of welds made by each welder on a pipeline with a minimum of one weld 6 per welder, selected at random, shall be subjected to radiography or may be cut for 2S visual examination and tests. 2 °) Piping less than 38 mm (1.5") bore : 2 Special tests are not normally required but 2% of welds by each welder on a pipe line 5 ‘may be cut out from the pipeline for the visual examination and bend tests. a) Retests If any test specimen is unsatisfactory, two further weld specimens for retests shall be selected from the production welds and subjected (o tests. In the event of failure of any retest specimens, the production welds carried out by this welder subsequent to the previous test shall be given special consideration. 9. For fabricated fittings LP test shall be done on the final pass of welding only, in addition to visual examination. 10. For mitres and fabricated reducers, LP / MP test shall be done on root pass in addition to radiography applicable to circumferential joint of respective piping class 11, For branch connections, LP/MP test shall be done on root pass and final pass. 12. As per TAC requirements, 10% of the butt weld joints shall be radiographed, however, 50% of these butt weld joints shall be field weld joinis 13, In addition to 100% radiography, butt weld joints for A16A and BL6A classes shall be wet fluorescent magnetic particle tested 14, For lined specs, testing (MP/LP/Radiography etc.) shall be performed before lining STANDARD SPECIFICATION FOR | SPECIFICATION _| REV ENGINEERS INDIA LIMITED | NON DESTRUCTIVE EXAMINATION 6-44-0016 4 REQUIREMENTS OF PIPING Paes ia si8