KUALIFIKASI PROSEDURE LAS

KUALIFIKASI TUKANG LAS

A W S D1.1 : 2004

Disampaikan dalam

DIKLAT INSPEKTUR LAS

Di POLITEKNIK PERKAPALAN NEGERI SURABAYA

Condro Widiyarto

MODUL TAMBAHAN

KUALIFIKASI LAS (KL)

A W S D1. 1 : 2004

1. General requirements

2. Design of welded requirement

Part A Common requirements for design of welded connenction ( Non tubular and Tubular Members )

Part B Common requirements for design of welded connenction ( Non tubular and Tubular Members )

Part C Specific requirements for design of Non Tubular Connections (Cyclically Loaded )

Part D Specific requirements for design of Non Tubular Connections ( Static or Cyclically Loaded )

3. Prequalification of WPSs

4. Qualificatioan

Part A General Requirements

Part B Welding Procedure Specification (WPS )

Part C Performance Qualification

5. Fabrication

6. Inspection

Part A General Requirements

Part B Contractor Responsibilities

Part C Acceptance Criteria

Part D NDT Procedure

Part E Radiographic Testing ( RT )

Part F Ultrasonic Testing ( UT ) of Groove Weld

Part G Other Examination Methods

7. Stud Welding

8. Strengthening and Repairing Existing Structures

Annexes – Mandatory Information

4. QUALIFICATION (hal.109)

4.0. SCOPE : Part A Gen. Req ( WPS & Welding Personi Qual ) Part B WPS ( not classified as prequalified in section 3 ) Part C Performance Qual. ( Welder’s Welding operators or tack welder’s )

4.1 Part A General Req. 4.1.1 WPS

Except qual with section 3 harus sesuai section 4 part B, evidence previous WPS qual shall approved by Engineers.

4.1.1.1 Qual Responsibilities : Manufacturer/Contractor shall conduct the test required and Proper document qual WPS sesuai code

4.1.1.2 WPS Qual to other standards Engineers responsibilitis

4.1.1.3 CVN Test Requirements When Req.Contrct dwg / spec harus masuk di WPS harus conform ke annex III (hal.269) Impact Test Requirements.

4.1.2 Performance qual welding personil : welders, welding operator & tack welder harus sesuai code ini untuk proses las SMAW, SAW, GTAW,FCAW,ESW, OR EGW di detailkan di part C.

4.1.2.1 Previous performance qual.

May be accepted oleh Engineer’s untuk approval

4.1.2.2. Qual Responsibility Manufacturer / contractor responsible yang dilaksanakan oleh Manufacturing, Contractor or Independent Testing Agency

4.1.3 Period effectiviness 4.1.3.1 Welder & Welding Operator

(1) 6 bulan tidak mengelas (2) Karena specific reason / meragukan kemampuan welder,

lihat 4.32.1 operator welding & welder re test requirement (hal.129).

4.1.3.2 Tack Welders

Sesuai posisi qualifikasi tack welders atau diragukan kemampuan ( see.4.32.2 hal. 129 ).

4.2 Common WPS & Welding Performance Req. 4.2.1 Qual early edition

Early qual acc.Req early ed : valid & bisa digunakan Kalau qualifikasi baru harus dengan edisi yang baru, kecuali secara specifid edisinya disebutkan dikontrak.

4.2.2 Aging

Qual.test specimen boleh diaging pada 93°C ≈ 104°C x 48 HRS 2 HRS When permitted by filler spec. ke weld yang sudah di test.

4.2.3 Record. Disimpan Mfg / Contractor

4.2.4 Position ; (F,H,V and OH sesuai FG : 4.1 & 4.2 ) hal 146 - 147 (1) Fig. 4.3. hal. 148 Grove Weld Plate (2) Fig. 4.4. hal. 149 Grove Weld Pipe / Tube (3) Fig. 4.5. hal. 150 Fillet Weld Plate (4) Fig. 4.6. hal. 151 Fillet Weld Pipe / Tube

PART B WPS

4.3 Welding Posisi sesuai table 4.1 (hal.130)

4.4 Type qual test Table : 4.2 (hal. 131) CJP Table : 4.3 (hal. 132) PJP Table : 4.4 (hal. 133) Fillet Detail NDT & Mech. Test sesuai : (1) Visual ( see 4.8.1. = hal 121 ) (2) NDT ( see 4.8.2. = hal 121 ) (3) F,R & S ( see 4.8.3. = hal 121 ) (4) Reduced Section ( see 4.8.3. 4 = hal 122 ) (5) All weld metal tension ( see 4.8.3. 6 = hal 122 ) for

EGW/ESW (table 4.2) (6) Macro etch ( see 4.8.4 = hal 122 )

4.5 Weld Type : for WPS Qualification. (1) CJP see 4.9 hal 122 (non tubular connection ) table :

4.2 (1) : FIG. 4.9 4.11 hal. 154 156 (2) PJP see 4.10 hal 122 (non tubular) (3) Fillet see 4.11 hal 123 (tubular and non tubular). (4) CJP for tubular see 4.12 hal. 124 (5) PJP for tubular see 4.13 hal. 125 (6) Plug & Slot weld see 4.14 hal 125 (tubular and non

tubular )

4.6 Prep. WPS refer ke 4.7 ( Ess. Variable ) Dengan supporting PQR untuk WPS Qual

4.7 Essensial Variable

4.7.1 Table 4.5 hal : 134 136 (SMAW,GTAW,SAW,GMAW and FCAW).

Table 4.6 hal : 137 when CVN (supp.ess.var) testing specified. 4.7.2 ESW & EGW : Table 4.7 hal. 138 4.7.3 Base metal qual.

Table : 3.1 (hal 62 65) & table 4.8 (hal.139)

4.8 Method testing & ACC criteria WPS qual. 4.8.1 Visual Inspection, Acceptable shall meet : hal 121

(1) Free of cracks (2) Craters filled to full cross section weld (3) Flush & smooth weld to BM UC 1 mm &

Reinf.Weld 3 mm (4) Root – no cracks, If or IP

Concave within limit, provided t weld TBM. (5) Max Root Concave = 2 mm

Max melt through = 3 mm 4.8.2 NDT ( before mechanical test ) 4.8.2.1 RT & UT

Accord sect. 6 part E or F for test plate Sect. 6 part C for tubular (hal.201)

4.8.2.2 Acceptance criteria according section 6 part C

4.8.3 Mechanical Test (ha.121) 4.8.3.1. R -F and Side Bend

Specimen see fig.4.12 (Root & Face) hal. 157 Specimen see fig.4.13 (Root & Face) hal. 158 Bend test jig fig. 4.15 4.17 hal. 160 - 161

4.8.3.2 Long Bend Specimen In lieu of transferse R dan F, Bend, when material differed marvedly in mech.bending. Cutting see fig : 4.10 or 4.11 hal : 155 156 Specimen see fig : 4.12 hal. 157

4.8.3.3 Acceptance Criteria Bend Test (hal.122) No discontinuities exceeding = (1) 3 mm any direction of surface (2) 10 mm sum all discontinuities > 1 mm and < 3 mm (3) 6 mm max. Corner Crack, Except from SI or other

fusion or other discontinuitie then corner crack 3 mm max. Corner crack garded and over > 6 mm without evidence SI shall bedisre replacement test from the original weldment shall be tested.

4.8.3.4 Reduction Section Tension Specimen

See fig : 4.14 ( page – 159 ) Tensile = Max. Load Width x Thickness

4.8.3.5 Acceptance Criteria Ts Ts min specimen base metal

4.8.3.6 All weld metal tension specimen

Fig = 4.18 ( page – 162 ) & Test Accordance ASTM A 370

4.8.4 Macroetch Eching for clear definition of weld

4.8.4.1 Acceptance Criteria

Visually inspection, shall conform ; (1) PJP = Actual weld size > specified weld size,(E)

(1) Fillet = Root fusion (2) Min – leg size meet specified fillet (3) PJP & fillet shall :

(a) No cracks (b) Fusion between layers, WM & BM (c) Weld profile conform to specified detail and

acceptance fig. 5.4 fabrication (d) UC 1 mm (undercut)

4.8.4 Re –test

One speciment fail two retest cut from material same WPS. For material > 1 ½” (38.1 mm) if fail required. Testing for all specimen of the same type from two additional location in the test material.

4.9 CJP (GROOVE FOR NON TUBULAR)

Table 4.2 (1) qual WPS hal. 131 Fig 4.9 4.11 Appropriate test plate hal.154-156

4.9.1 Corner or T Joint Expect dept of groove 25 mm, specimen shall same with congfiguration on construction.

4.10 PJP (GROOVE WELD NON TUBULAR)

4.10.1 Table 4.3 hal. 133

4.10.2 Weld size verification by macroetch 3 macroetch req. to design weld size are met.

4.10.3 Verification qualification by CJP & applied to PJP > Req. 3 macro.

(e)

4.8.4 Re –test

One speciment fail two retest cut from material sameWPS.For material > 1 ½” (38.1 mm) if fail required.Testing for all specimen same type two additionallocation in the material.

4.9 CJP (GROOVE FOR NON TUBULAR)Table 4.2 (1) qual WPS hal. 131Fig 4.9 4.11 Appropriate test plate hal.154-156

4.9.1 Corner or T JointExpect dept of groove 25 mm, specimen shall samewith congfiguration on construction.

4.10 PJP (GROOVE WELD NON TUBULAR)

4.10.1 Table 4.3 hal. 133

4.10.2 Weld size verification by macroetch3 macroetch req. to design weld size are met.

4.10.3 Verification qualification by CJP & applied to PJP >Req. 3 macro.

4.10.4 Other WPS by macroetchIf WPS not cover by 4.10.2 or 4.10.3 or if weld not prequal shall be prepare sample joint and the firstoperation.Tensile & bending shall be prepare as req. for CJP see4.9 hal. 122.

4.10.5 Flare groove weld, effective weld determine by :(1) When by Engineer, test section shall be used.

(1) Table 2.1 layer effective weld req. by qualification. (2) Qual. By (2) shall consist : radius member, normal to

exis, at min legth and of weld or as req.by Engineer.

4.11 Fillet weld Tubular & non tubular 4.11.2 Fillet weld belong test fig.4.19 (plate) or fig.4.20/ipe for each

WPS & position in construction hal. 163 or 164 4.12 CJP (TUBULAR) hal. 124

Classified : (1) see 4.12.1 with backing back gouging (2) see 4.12.2 without backing back gauging (one

side only) (1) see 4.12.3 T.Y.K - Connection with backing (2) see 4.12.4 T.Y.K - without backing

4.12.1. Fig : 4.24 with back gouging hal. 167 Fig : 4.25 with backing hal 167

4.12.2. Fig 4.24 hal. 167 4.12.3 Shall qualify using :

(1) OD from table 4.2 (2) hal. 131 (2) Fig. 4.25 hal 167 joint detail OR (3) OD 24”, plate conform with 4.9 using fig. 4.25 hal

167.

4.12.4. The req. as follow : 4.12.4.1 WPS W/O Prequalified status, req.the following : (1) Fig. 4.27 (pipe) or Fig. 4.27 (hal. 169) and Fig. 4.28 (box

tube) (hal : 169) (2) 1 macroetch req. for each condition :

( a) Groove combining to be used or greatest depth

Groove with smallest angle groove. b Narrowest root opening with groove angle 37.5°

test in flat (one) & OH (one) position. c. Widest root opening used groove angle : 37,5° and

one test welded flat & overhead position d. Match box conn.only : min. groove angle, corner

dimension & corner radius comb. : one test in horizontal position

(2) Macrotest in (1) & (2)above exam shall have (P-124)

a. No cracks b. Fusion between layers, WM & BM c. Weld profile conform to specified detail and

accordance 5.24 (hal.100) Fabrication, Weld Profile.

d. No. undercut exceeding in 6.9 (P-201) Visual Inspection Table 6.1 (P-218)

e. For P 1 mm sum P ¼” (6 mm) f. No. Accumulated slag sumslag 6 mm

Those specimens not conform to :

(a) (f) shall be considered un acceptable (b) (f) not applicable to back up weld

4.12.4.2 CJP for T,Y,K CONN. WPS with 30

Sample joint see 4.12.4.1 (2) 3 macroetch cut from specimen & shall conform to 4.12.4.1 (3) and show req. theoretical weld see detail C,D fig 3.8 3.10 hal. 115 – 117 Fig. 4.26 for test detail hal. 168.

4.12.4.3 CJP in T,Y,K Conn. using GMAW – S

Shall conform sect.4 Detail in 3.13.4 hal. 60 (Fig.3.8 3.11 hal. 115-118)

37.5 single bevel & shown in Fig. 4.27 (P-169)

4.12.4.4. Notch CVN Toughness when req. butt long & circum with 0.5 D attach member (Tubular), charpy under 2.26.2.2 (hal.22) Absorb Energy = 20 ft – lb (27J) at last or at - 18C ( 0 F) whichever lowest

4.13. PJP t,K,Y Conn. ( Butt )

See table 4.3 hal. 133

4.14. Plug & Slot Accordance 4.29 hal. 128

4.15 Welding Process Requiring Qualification 4.15.1 Welding process ESW,EGW,GTAW & GMAW (see annex A for GMAW-S)

Table 4.5 for GMAW also apply to GMAW-S

4.15.2 Other Welding Process Not covered by 3.2.1 or 4.15.1 may be used,provided WPS are qual. by test With ess.var Developing WPS by contractor and approved by Engineer

4.16 WPS for GTAW

Shall prepare & quality each WPS Sect. 4

4.17 WPS for ESW / EGW. Shall prepare & quality each WPS Sect. 4

4.17. Prevous qual Proper document & WPS is approved by

Engineer may be accepted

4.15.1 All weld TS req. Shall demonstrate Acc to sect.4 prior to use

AWS - D1.1 - 2004I.Table 4.1 WPS QUALIFICATION

QUALIFIED FOR

PRODUCTION WELDING

1) Plate - CJP - 2G / ( H ) a. Plate : a) CJP = F, H b) PJP = F, H c) Fillet = F. H 9)b. Pipe : a) CJP = F, H b) PJP = F, H c) TYK = Not Qualified d) Fillet = F, H 9)c. Prod.Box Tube = SDA ( Pipe )

2) Tubular - CJP - 6 GR a) Plate = ALLb) Pipe = ALL ( T,Y,K ) 5)c) Box tube = ALL ( T,Y,K ) 6)

Note : 2) For Ǿ 24 inchi and over 5) Fig. 4.27 for detail testing ( hal 136 ) 6) Fig. 4.28 for detail testing ( hal. 169 ) 9) Production conform to fig. 3.2, WPS Qual, to 4.11.

Production welding position qualified by plate, pipe andB0x tube test ( see 4.3 ) Hal : 130

QUAL - TEST

1) Plate 20 mm thick Min plate thickness = 10 mm( qualified min T = 3 mm Qualified Max T = 20 mm )Number of specimen, TS = 2 (fig 4.14)SB = 4 ( Fig 4.13 )

2) Pipe 20 mm thick Ǿ ≤ 508 mm ---> Qual = ≥ 508 Dia 508 mm T > 10 mm ----> Qual :

T min : T/2 T max : 2 TNumber of specimen, TS = 2 (fig 4.14)SB = 4 ( Fig 4.13 )

Note : 1) Shall be VT ( 4.8.1 ) & subject to NDT ( 4.8.2 )

PRODUCT WELDING

diameter qualified ( see 4.4 ) Hal : 110 inches 112 mm

WPS QUALIFICATION 1)

WPS Qual. CJP Groove WeldNumber & type of test specimens and thickness and

3.TABLE.4.5

ESS. VARIABLE TO PQR PRODUCTION WELDINGFILLER METAL1) > class strengh ( SMAW,GMAW GTAW ) E 7016 E 70X.X, E60XX2) θ Low hydrogen to non low E 7016 (SMAW) EXX163) θ From one elc./ flux class to any others class A5.17 A5.17 A5.18 A5.184) θ elc/Flux not covered in class

5) +/- Filler metal ( GTAW )

6) θ Cold wire feed to HOT wire feed ( GTAW )7) +/- supp powder or granular or wire8) > amount supp powder or granular or wire9) If alloy large on supplemental powderELECTRODE10) θ elc. Dia meter SMAW > 0.8 mm Max. Dia 3.4 mm (increase) Dia 2.6 mm11) θ number of elc. 1 electrode 1 elcELECTRIC PARAMETER12) θ Ampere/diameter used SAW > +- 10% I = 100 A I = 90 ~ 110 A

PQR essensial variable change, requiring WPS requal.For = SWAW, GAW, GWAW, FCAW & GTAW

(see 4.7.1 ) ……….. Hal.134

13) θ AC or DC or polarity and mode transfer (GMAW) DC- EP Globular DC-EP Globular14) θ E/ dia. Used SAW >+- 7 % E = 20 Volt 18.6- 21.4 Volt15) < > wire feed speed FCAW > +- 10 % V = 200 mm/mnt V = 180-220 mm/mnt16) θ Speed (V) = 200 mm/mnt SAW >+- 15 % V = 170-230 mm/mntTable = 4.517) > Heat input = 60EI SMAW HI >+- 10 % V HI = 60 x 25 x 150 6 = 37500 J/inch HI < 41230 J/inchi

SHEILDING GAS18) θ single to other/mix/comb.or % comp. Gas 75 % Ar + 25 % CO. 75 % Ar + 25 % CO.19) θ total gas flow rate FCAW . + 50 % - 20 % Flow Argon = 20 I/mnt F. Argon = 16 ~ 30 ℓ/mnt

20) θ gas not covered

SAW Parameter21) θ long spacing > 10 % or 1/8" ( greater ) l 1 I 1 = 20 mm I 1 ≤ 23.175 mm22) θ lateral spacing

> 10 % or 1/8" ( greater ) l 2 I 2 = 10 mm I 2 ≤ 13.175 mm

ESS. VARIABLE TO PQR PRODUCTION WELDING

23) +- 10 Angular orientation α 1 α 1 = 20°

α 1 = 10° ~ 30°24) ± 3° Angle elc

max.3°

у25) ± 5° normal to the direction max.5° z travel x

General

26) Ǿ position ( table 4.1) hal : 130 posisi = 2 G Posisi = F, H

27) Ǿ or Thickness or both ( table 4.2 ) Hal : 110-111

28) Ǿ BM or Comb (table 4.8) hal 117 Group II to II Group I/II to I/II

29) Uphill to down hill or V V

3G Uphill 3G- Uphill30) Ǿ Groove Type Single V to Double

ESS. VARIABLE TO PQR PRODUCTION WELDING

31) Dia Groove to squar or V V Square groove

32) Dia.10 tolerance (3.12 ~ 3-14 ) GA a. < G1 b. < RO c. > RF RO RF

33) Backing/back gouging with With back gouging With back gouging

34) < Preheat temp. see provision 5.6 ( Hal 181 ) & table 3.2 exception (Hal 66-68) P I = 150 C > 150 C

35) > Inter pass temp ( 5.6 & 3.2 exception ) GTAW > 55 C if impact required. IT = 250 C IT < 305 C36) < Interpass temp SMAW > 13.9 C IT = 250 C IT > 236.1 C

37) ± PWHT with PWHT PWHT

PART C

PERFORMANCE QUALIFICATION

4.18 General Welder, welding op. or tack welding using WPS ( ability to product sound welds ).

4.18.1 Production W.position qualified. 1.1 Welder see table 4.9 (hal.140) 1.2 Welding operators.

Qual on plate ( 1G or 2G ) shall qual. for > 24” (610 mm ) → in position qual. except. 1 G also qual. for 1F & 2 F 2G also qual 1G,1F & 2F

1.3 Tack welders 1 test plate for each position required on tack welding to be performed.

4.18.2 Prod. T & D ( Thickness & Diameter ) 2.1 See table 4.10 hal 141 ( welder & operator ) 2.2 Tack welders

Qual. T 1/8 in and all diameters. 4.18.3 Performance through WPS qual. may also qual. by welding

satisfactory during WPS qual. test 4.19 Type of Qual. test required. 4.19.1 Welders & weld OPR

Detail individual NDT & Mech test req. : (1) Visual inspection see 4.8.1 (2) F,R & S bend see 4.8.3.1 (3) Macro see 4.30.2 hal. 128 (4) Fillet weld break see 4.30.4 (hal. 129) Fig.4.36

(hal.176)

4.19.1.1. RT instead of bending test except GMAW-S, RT may

be made in lien of guided bend test ( see 4.30 for RT req. hal. 128 ). Qual. test asy RT by 15 in (380 mm) in the initial prod. Weld T-Range Qual. Shown table 4.9

4.19.1.2. Guided Bend Test

Prepare specimen Acc. Fig 4.21 (hal.165), 4.29 4.33 (hal.170 hal.174) for welding operators Fig 4.22, 4.32 or 4.35 (hal. 165,173,175) prepare for testing Acc.fig. 4.12 4.14 or 4.18 specimen (hal. 157 162 )

4.19.2 Tack welders

Make : ¼” size tack weld x 2” long on fillet weld break specimen see Fig. 4.38 (hal.178)

4.19.2.1 Extent of qual.

Who quality tack weld by weld test qualified for tack weld all joints, except CJP from on side W/O backing.

4.20 Weld Type for Welder & Operator (1) CJP non tubular see 4.23 (hal.166) (2) PJP non tubular see 4.24 (hal. 167) (3) Fillet non tubular see 4.25 (hal.167) (4) CJP tubular se 4.26 (hal.168) (5) PJP tubular see 4.27 (hal.169) (6) Fillet tubular see 4.28 (hal.169) (7) Plug & shot tubular & non tubular see 4.29

(hal.170)

4.21 Preparation Use WPS with limination of. 4.7 shall apply. Performance Ess. Val. 4.22 for WPQR with ess

variable table 4.11 hal 145

4.22 Essensial variable see table 4.11 hal. 145

4.23 CJP ( non tubular )

See table 4.9 position hal. 140

4.23.1 Welder Qual. on plate (1) Fig. 4.21 All position – unlimited T hal. 165 (2) Fig. 4.29 All horizontal – unlimited T hal. 170 (3) Fig. 4.30 All position – limited T hal. 171 (4) Fig. 4.31 All position – limited T hal. 172

4.23.2 For ESW/EGW see Fig.4.22 hal. 165 un limited T &

position tested. For test 38 mm = max. thickenss to be used For test T > 38 mm = quality for welding operator groove and fillet in material un limited thickness for this process and position

4.24 PJP ( non tubular ) CPJ quality for all PJP

4.25 Fillet weld ( non tubular )

CPJ quality for fillet weld. Only fillet weld qualification is req. see table 4.10 hal. 141-144

4.26 CJP ( tubular )

Welder or welding operator test shall : (1) CJP groove butt with backing or back gouging Fig.

4.25 (hal. 167) (2) CJP groove butt w/o backing or back gouging Fig.

4.24 (hal. 167). (3) CJP groove butt or T,Y,K, Conn. with backing in

box tubing Fig. 4.25 pipe,plate or box tube.

(4) CJP groove T,Y and K, Connection.s with backing orback gouging in pipe. Use Fig. 4.25 in pipe ofappropriate diameter.

(5) CJP groove T,Y and K, conn. from one side withbacking Fig.4.27 (hal.169).

(6) CJP groove T,Y and K, conn. from one side w/obacking :

(a) Fig. 4.27 & Fig. 4.28(b) Fig. 4.27 (hal.169) macro & above from

location Fig. 4.28 (hal.169)See table 4.10 for prod range of and T

4.26.1 Other joint detail & WPSSee 4.12, 4.2 : Test 6GR Fig.4.27 & 4.28 test positionshall be vertical

4.15 PJP ( Tubular )Tubular CJP quality for all PJP

4.16 Fillet weld ( Tubular )See table 4.10 fillet weld req.

4.17 Plug & Slot (Tubular & Non Tubular )See table 4.9 joint consist = ¾ “ dia hole in 3/8” thickplate with min thickness 3/8” backing plate ( Fig.4.37 hal177)

4.30 Method of testing & Acc criteria for welder and welding operator qual.

4.30.1 Visual inspection see 4.8.1

4.30.2 Macroetch

4.30.2.1 Plug & Fillet

(1) Welder qual. (Fig.4.37 hal 177) (2) Welding operator (Fig.4.37)

Shall be cut from see (Fig.4.36 hal.176)

4.30.2.2 T,Y,K Connection See Fig.4.28 hal.169 Test 6 GR (Fig.4.27) req. 4 corner macro

4.30.2.3 Acceptence criteria

Macro test req. in (1) & (2) above exam shall have : PJP & Fillet

(a) No. cracks (b) Fusion between layers, WM & BM (c) Weld profile conform to specified detail

accordance 5.24 (hal.190 fabrication) Fig.5.4 (hal 198 weld profile)

(d) UC ( Under cut ) 1 mm 4.30.3 RT in lien of bend test, weld reinf. Not need to be ground.

If backing removed, the root shall be ground flush ( see 5.24.4.1).

4.30.4 Fillet weld break test

Visual inspection 150 mm length loaded inclussed & repeated until specimen fracture or bend flat upon it selt. Acceptance criteria Visual = uniform apprearance & free overlap, crack and UC There shall be no porosity visible on surface. Pass if : (1) Bend flat upon it selt or (2) Complete fusion, no inclusion > 2 mm

(3) Sum inclusion & P 3/8 ( 10 mm ) in the 150 mm length specimen

4.30.5 R,F & Side Bend see 4.8.3.3 for accaptance criteria

4.31 Methode of testing for tack weld

Fig. 4.34

4.31.1 Visual Acceptance Criteria UC 7 mm. Free crack over

4.31.2 NDT Acceptance Criteria No.IP, or IC or P 72 mm 4.32 Retest

4.32.1 Welder & welding operator

1.1 Intermediate retest = 2 weld each type & position. 1.2 Retest after training / proactive 1.3 Retest after lapse of qual periode of effectiveness 1.4 Exception retest after as per 4.32.1.2

4.32.2 Tack welder retest req.

4.32.2.2 W/O additional training make one test.

4.32.2.2 After training / practice