UI 9253-06 Part 1 E (2009-11)-WeldingAndWeldExaminationOfMetallicPiping

8/13/2019 UI 9253-06 Part 1 E (2009-11)-WeldingAndWeldExaminationOfMetallicPiping

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UHDE INSTRUCTION November 2009

UI9253-06

Part 1

Erection

Welding and weld examinationof metallic piping

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Montage; Schweien und Schweinahtprfung von metallischenRohrleitungen

Supersedes 2008-09

20.11.09 Rapior 20.11.09 Kuhnke 23.11.09 Fellner 24.11.09 Jakob

Date Prepared Date Checked Date Standardization Date Appro ved

2009 Uhde GmbHUF19ST-F01M03

E07-07

UHDE INSTRUCTION


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ContentsPage

1

Scope ....................................................... ........................................................... .................................................. 32 Units and abbreviat ions ...................................................................................................................................... 3

2.1 Units........................ ........................................................... .......................................................................... .......... 32.2 Abbreviations ...................................................... ....................................................................... ............................ 3

3 Technical documents ..........................................................................................................................................3

4 Qual ity System ............................................... ........................................................ .............................................. 3

5 Welding processes and procedures .................................................................................................................. 45.1 Procedure qualification record .......................................................... ..................................................................... 45.2 Welding procedure specification ............................................................ ................................................................ 4

6 Welding personnel ..................................................... ........................................................ .................................. 46.1 Welder qualification................................... ........................................................... .................................................. 46.2 Identification of welders ........................................................... ..................................................................... ......... 46.3 Welding inspection....................................................... ........................................................................ .................. 4

7 Welding restrictions ............................................................................................................................................ 5

8 Materials ................................................ ........................................................ ....................................................... 58.1 General .......................................................... ........................................................... ............................................. 58.2 Identity of base materials ........................................................ ....................................................................... ........ 58.3 Base material and filler metals ...................................................... ......................................................................... 58.4 Approval of welding filler metals................................................. .................................................................... ........ 58.5 General storage requirements for filler metals ............................................................ ........................................... 58.6 Covered electrodes........................................................ ...................................................................... .................. 58.7 Welding rods and welding wires............................................................................................................ ................. 6

9 Weld preparation................................................... ............................................................................. .................. 69.1 Cutting, grinding and cleaning ............................................................ ................................................................... 69.2 Aligning ......................................................... ........................................................... .............................................. 6

10

Requirements for weld ing ...................................................................................................................................6

10.1

Tack welding...................................................... ........................................................... ......................................... 6

10.2 Welding ......................................................... ........................................................... .............................................. 610.3 Arc striking ....................................................... .......................................................................... ............................ 7

11 Heat treatment ........................................................ ............................................................................ .................. 711.1 Preheating ................................................ ........................................................ ..................................................... 711.2 Postweld heat treatment ................................................. ..................................................................... .................. 7

12 Post-treatment of welds ...................................................................................................................................... 812.1 Mechanical cleaning ....................................................... ..................................................................... .................. 812.2 Chemical cleaning.................................... ............................................................ .................................................. 8

13 Examination of welds ..........................................................................................................................................813.1 Visual examination...... ........................................................... ....................................................................... ......... 913.2 Radiographic examination ...................................................... ....................................................................... ........ 913.3 Ultrasonic examination................................ ........................................................ ................................................... 913.4

Liquid penetrant test ............................................................ ......................................................................... ......... 9

13.5 Other examinations...................................................... ........................................................................ .................. 9

14 Repairs ....................................................... ........................................................... ................................................ 9

15 Documentation .................................................. ............................................................ ..................................... 1015.1 Welding documentation ................................................... ........................................................................ ............ 1015.2 Final welding documentation .......................................................... ..................................................................... 10

Reference standards ........................................................ ........................................................................ ......................... 11

Amendments .......................................................... ......................................................................... ................................... 12


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1 ScopeThis Uhde instruction (UI) shall apply to the design and construction of industrial and chemical plants. It ap-

plies to the welding of piping on site and contains generally applicable requirements for welding and handlingof metallic materials.

2 Units and abbreviations2.1 UnitsThe following units shall be used:

Table 1 Units

General SI unitsDimensions mmTemperature C

2.2 AbbreviationsBM = Base materialNDT = Non-destructive testingPWHT = Postweld heat treatmentTON = Technical organisation numberUF = Uhde formUN = Uhde standardWM = Weld metal

3 Technical documentsFor various base materials according to Uhde piping Materialcodes the standards UN 9240-01 throughUN 9244-01 define the following welding data:

Material grouping

Welding processes

Filler metals

Heat treatment parameters

For incidents not covered by the UN referred to above, UF 9253-01 applies.

UF 9253-03 specifies regulations to be applied in a project for:

Weld preparation

Internal misalignment

Welding procedure qualification Welder (performance) qualification

Approval of filler metals

Design basis for heat treatment

Scope of NDT

Procedures for NDT

Acceptance criteria for NDT

Progressive sampling for examination

4 Quality System

Contractor shall establish a quality system for welding of piping and associated works to be presented to andaccepted by Orderer prior to commencement of welding work. Contractor shall have work routines and proce-dures for quality planning, quality control and documentation activities. Contractors site organisation structureshall reflect these activities.


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Contractor shall establish a computerised system for the generation of welding documentation and weldingstatistics before commencement of welding work on site. Welding statistics shall be issued by Contractor andsubmitted to the Orderer at least weekly.

5 Welding processes and proceduresWelding processes other than specified may be approved under appropriate conditions and after a procedurequalification test.

The welding machines used for gas tungsten arc welding shall have non-contact ignition (e.g. by high fre-quency) and a controlled current up and down slope feature.

5.1 Procedure qualification recordContractor shall have valid procedure qualification records meeting the project requirements, otherwise newprocedure qualification tests shall be conducted and performed by Contractor. All related costs for procedure

qualification tests shall be borne by Contractor.

5.2 Welding procedure specificationContractor shall elaborate from the procedure qualification records welding procedure specifications for allavailable combinations of materials and wall thicknesses. Welding procedure specifications shall be submittedby Contractor to the Orderer for approval before commencement of pertaining welding work. The Contractor isobliged to hand over and to explain the approved welding procedure specifications to each welder.

6 Welding personnel6.1 Welder qualificationAll welders shall pass a welder (performance) qualification test on site according to the specified standards,unless a welder has a valid welder (performance) qualification record meeting the project requirements. If so

the welder shall pass a skill test prior to his assignment. The test specimen of a skill test shall be subject to aradiographic examination.

Welder qualification tests on site or skill tests shall be announced in writing by Contractor to the Orderer atleast one day in advance.

Test specimens shall be subjected to non-destructive examinations as required by the specified standard forwelder qualifications. In addition, a destructive examination (simplified bending test) may be performed. Theassessment of the test specimen shall be recorded in writing. The welder may be entrusted with the work afterthe test specimen has been fully evaluated by Contractor and approved by Orderer. In case the welder failsthe test, he may be re-tested once after adequate training. All related costs involved for qualification or skilltesting of welders shall be borne by Contractor.

Contractor shall observe requirements for renewal / prolongation of welder qualifications.

6.2 Identification of weldersAfter qualification or skill testing, Contractor shall issue for each welder an unambiguous identification mark, aqualification / skill certificate, an identification card and a low stress hard-stamp with the welders mark beforeassigning a qualified / tested welder to site. Contractor shall submit to Orderer these certificates and identifica-tion cards for approval. All welders shall always have at hand their identification card(s) and hard-stamp.

The identification mark of a welder shall be used for identifying all welders joints made. Identification bymeans of a low stress hard-stamp shall be applied at a distance of at least 30 mm from the weld. Welds ofthin-walled or high-alloyed pipes shall be identified by using paint (e.g. felt pen). The paint shall be free fromoil, grease, sulfur, chlorine, zinc, tin, lead, arsenic, copper and halogens.

6.3 Welding inspectionContractor shall employ qualified and certified welding inspection personnel (e.g. welding inspector, weldingspecialist, welding engineer). Evidence about this personnels qualification and certification shall be submittedby Contractor to the Orderer before assigning any welding inspection personnel to site.


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7 Welding restrictionsWelding work shall only be performed under conditions that ensure the required quality. Welding shall be sub-

jected to closer inspection at low temperatures or under unfavourable weather conditions.

During periods of windy, stormy, rainy weather or during snowfall, welding shall be performed under tents. Attemperatures of less than 5 C, special measures shall be taken to maintain a sufficient pipe wall temperature.The area of and adjacent to the welding joint shall be kept free from condensed water by appropriate meas-ures.

8 Materials8.1 GeneralAustenitic chromium-nickel steel and non-ferrous metal shall be stored separately from unalloyed, low-alloyand ferrous high-alloy steel. On site Contractor shall prevent any contamination of austenitic chromium-nickelsteel and non-ferrous metal (e. g. nickel alloys, titanium, aluminium, etc.) by appropriate measures.

Any damaged or contaminated piping component shall be checked and if applicable restored to satisfactorycondition before being welded. The satisfactory condition shall be determined by Orderer.

8.2 Identity of base materialsUpon arrival on site, the piping elements shall be checked for their Materialcode numbers and heat numbersand stored separately according to the Materialcode numbers. Before cutting pipes, it shall be ensured that allpipe sections bear the Materialcode number and heat number (e.g. re-stamping, engraving).

Materials which cannot be identified clearly shall be examined spectroscopically. If no definite results can beachieved in this manner, notched-bar impact tests shall be performed. If notched-bar impact tests cannot beperformed, the material type shall be identified by a chemical analysis. Alloyed materials shall be subjected torandom checks.

8.3 Base material and fil ler metalsBase materials shall only be welded with the specified welding filler metals. With approval by Orderer, fillermetals may be replaced. In this case, process-related requirements shall be considered.

8.4 Approval of welding filler metalsAll filler metals shall be approved by an internationally recognized examining body (e.g. TV, GermanischerLloyd, American Bureau of Shipping, Lloyd's Register of Shipping) for the specific base materials, wall thick-ness and temperature range. In justified cases (e.g. quality of the electrode is doubtful, electrodes withoutcertificate), Orderer may demand a test of the filler metal in conjunction with a procedure qualification. On theOrderer's request, manufacturer's certificates shall be provided by Contractor for all filler metals.

8.5 General storage requirements for filler metalsFiller metals shall be stored in a dry room, shall be protected from contamination and shall not be exposed tomoisture. Filler metal packages shall be kept closed during storage.

Remaining filler metals on site shall be returned to the store after every shift.

8.6 Covered electrodesBasic electrodes shall be re-dried. Electrode manufacturers instructions and recommendations for re-dryingand holding shall be adhered to. Contractor shall provide and maintain calibrated ovens for re-drying / holdingand quivers (portable ovens), if basic electrodes are used. Number and capacity of ovens and quivers shall beadequate to project needs.

Basic electrodes shall only be removed from the oven in small quantities and kept in a heated quiver until use.

All electrodes which have not been used shall be put back into the oven. Maximum re-drying and holding cy-cles / times according to the electrode manufacturer shall be observed.


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8.7 Welding rods and welding wiresAny contamination shall carefully be removed before welding at the latest. To avoid any mix-up, the welder

shall carry with him only welding rods or wires of one single material.

9 Weld preparationWeld preparation shall be performed as specified. The permissible specified misalignment shall be observed.Orderer may permit deviations (e.g. bevel, gap or slope). The surfaces in and adjacent to the area of the weld-ing joint shall be dry and free from any impurities (e.g. grinding dust, welding slag, grease, rust, etc). For pipeswith bituminous coating, the coating shall be removed over a width of approximately 200 mm on both sides ofthe welding joint.

9.1 Cutting, grind ing and cleaningFlame-cutting is permitted for unalloyed steel, 16Mo3 (1.5415, ASTM A 335 / ASTM A 335M Grade P1) and13CrMo4-5 (1.7335, ASTM A 335 / ASTM A 335M Grade P11). Specified welding preheating temperatures

shall be maintained for flame-cutting. Oxidation products and excessive undercuts shall be removed by grind-ing or other suitable procedures.

Austenitic chromium-nickel steel or nickel alloys shall be cut mechanically or by the plasma-arc process. Anyslag or groove at the welding joints shall be removed by grinding. Austenitic chromium-nickel steel brushesand cutting and grinding discs approved for this material shall be used only. Austenitic chromium-nickel steeland non-ferrous metal shall be stored and machined separately from unalloyed, low-alloy and ferrous high-alloy steel.

Cut-outs for nozzles and branches shall be made according to the aforementioned procedures and suitable for thematerial. Internal pipe cleaning shall be done after the performance of cut-outs.

9.2 Aligning

Piping components to be joined should be aligned with the aid of an internal or external centring device. Cen-tring devices shall not be (tack) welded to any piping components.

Misalignment of unalloyed steel pipes may be eliminated by hot-straightening. Pipes of austenitic chromium-nickel steel shall only be cold-straightened, with approval of the Orderer.

10 Requirements for welding10.1 Tack weldingTack welds shall be welded by qualified welders only, be provided in sufficient numbers, be without defects,otherwise they shall be completely removed by grinding during welding the root run.

Tack welds without defects made by the gas tungsten arc welding or oxyacetylene welding process may re-

main in place. Restarts of tack welds shall be smoothed by grinding. The requirements of section 11.1shallanalogously apply for tack welding.

Earthing clamps of welding sets (cable connection between welding machine and work piece) shall be adja-cent to the pertaining welding location. Damages of bearings, in-line instruments, bolts / bolt connections,rotors, motors, etc caused by uncontrolled welding currents and resulting impacts on erection and commis-sioning shall be borne by Contractor.

After tack welding, the welding joint area shall be protected against contamination.

10.2 WeldingWelding shall be performed in such a way as to ensure complete fusion of welding filler metal and base mate-rial. The requirements for earthing clamps of section 10.1shall be adhered to.

Root runs to be welded from one side only, shall be welded in such a manner that full penetration will be a-chieved. Any imperfection detected on the surface of the weld shall be removed by grinding prior to the nextrun / pass. Requirements for subsequent lining (e. g. rubber lining) shall be observed.


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In case of welds to be welded from both sides, the root shall be gouged out and examined for defects by aliquid penetrant test before welding at the gouged side. Examination costs shall be borne by Contractor.

In case of austenitic chromium-nickel steel or nickel alloys, heat input during welding shall be kept to a mini-mum; welds shall be executed narrow and the reinforcement small (string bead technique). Contractor shallregularly inspect and measure interpass temperatures. Gas backing requirements as stipulated referred to insection 2shall be adhered to. Contractor shall inspect constantly backing activities, backing equipment andpipe internal tinting. Gas backing (oxygen level) shall be measured by calibrated equipment; its number shallbe adequate to project needs.

For basic electrodes, the arc length should be equal to half the electrode diameter, but it shall be no morethan 2 mm to prevent porosity.

10.3 Arc strikingArc striking shall be made in the area of the seam at a distance of approximately 20 mm ahead from the start-

ing crown being melted during subsequent welding. Arc striking beyond this area is not permitted.

Any arc strikes located beyond the weld shall be completely removed by grinding and be subjected to mag-netic particle tests. In case of austenitic chromium-nickel steel and non-ferrous metal a liquid penetrant testshall be performed. All related costs for arc strike removal and testing shall be borne by Contractor.

11 Heat treatment11.1 PreheatingSpecified preheating data shall be observed. For preheating under unfavourable weather conditions, section 7shall apply analogously.

Preheating shall be carried out preferably by electric heating elements or by means of ring burners. Ring bur-

ners shall be employed up to and including DN 80 (NPS 3) only. Other burner types shall be subject to Or-derers approval. The specified preheating temperature shall be maintained during welding and checked withthe aid of thermocouples (for their locations see Table 2), calibrated surface thermometers or thermo chromecrayons. Every welder shall be able to check preheating temperatures.

11.2 Postweld heat treatmentSpecified PWHT data shall be adhered to. PWHT with burners is not permitted. Adequate proof (e.g. with atemperature-time chart) shall be furnished by the Contractor that the specified temperature was reached andthat the specified temperature raising periods, PWHT periods and cooling periods were maintained.

On each preheat or PWHT chart the following information shall be given immediately before commencementof the pertaining heat treatment cycle:

Isometric / pipeline drawing number

Weld joint number

Start date and start time of heat treatment cycle

Chart paper speed

Location of thermocouples on base material and weld seam

Allocation of thermocouples to chart recorder colours

Name and signature of heat treatment operator

Immediately after finishing of the heat treatment cycle the end date and end time shall be recorded on thechart by the heat treatment operator.

During the local heat treatment open ends of spools shall be closed with insulation material.

The zone subject to PWHT in which the weld seam shall be in its centre shall be eight times the wall thick-ness and have a minimum width of 100 mm. The minimum number and location of thermocouples stipulatedduring preheat and PWHT respectively are listed in the following table,.


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Table 2.

Outsidediameter (mm)

Preheating:

Min. number ofthermocouples

Location ofthermocouples

PWHT:

Min. number ofthermocouples

Location ofthermocouples

< 170 2 x 1On both BM with 180spacing and according toEN ISO 13916.

1 WM

170 and370

2 x 2

On both BM, accordingto EN ISO 13916, equallydistributed on circumfer-ence (180 spacing).

2WM, equally distributedon circumference (180spacing).

> 370 and550

2 x 3



> 550 2 x 4



During cooling the temperature shall be reduced to about 300 C at a controlled rate. Further cooling as wellas any uncontrolled cooling shall take place under insulation.

Further heat treatment or welding is not permitted. A PWHT shall only be repeated after a weld repair hasbeen performed.

Remnants of thermocouple wires on the base material shall be ground flush.

12 Post-treatment of welds12.1 Mechanical cleaningAll welds shall be freed from slag and weld spatter. Care shall be taken to avoid any damage to the weld andadjacent base metal and to reduce wall thickness.

In case of austenitic chromium-nickel steel and nickel alloys, welds and adjacent areas shall be brushed. Thebrushes shall not be used for other materials. The surface may be cleaned by grinding with emery discs or byblasting with glass shot as described in UI 9253-12.

Weld reinforcements within the tolerance of the specified standards need not be removed. However, smooth-ing the weld reinforcements by grinding may be required for the purpose of a non-destructive examination.

12.2 Chemical cleaningAny oxides (tempering colours) formed on austenitic chromium-nickel steel and nickel alloys shall be elimi-nated by pickling unless they can be removed successfully as described in section 12.1. UI 9253-12 shall applyfor pickling.

13 Examination of weldsNon destructive test results shall be evaluated in accordance with the specified standards. Non destructiveexaminations shall be started directly after commencement of welding work to ensure uniform quality of thewelds.

Contractor shall have qualified and certified personnel for the performance and evaluation of NDT. Subcon-

tracting of NDT works shall not relieve Contractor to have qualified and certified personnel for evaluation ofthese results. Evidence about this personnels qualification and certification shall be submitted by Contractorto the Orderer before assigning any examination personnel to site.


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The rate of defects shall be determined by the number of welds showing defects compared with the number ofwelds examined (in percent).

Examinations before PWHT shall be borne by Contractor, unless otherwise specified.

13.1 Visual examinationAll welds shall be subjected to a visual examination from the outside and, if possible, the inside prior to anyother examination. Weld preparation and welding shall be inspected regularly.

13.2 Radiographic examinationThe first two welds made by each welder shall be examined. If one of these welds are defective then the wel-der shall be sent to training and re-qualification. Contractor shall prepare a log sheet summarizing the first twowelds for each welder. The log sheet shall be submitted to the Orderer at least weekly.

The scope of examination (in percent) refers to the examination of site welds only. Site welds shall include all

seams welded on site, regardless of their shape (e.g. circumferential butt joints, nozzle welds), welding proce-dure applied, and material. Radiographic examination applies for circumferential butt joints only.

The number of welds to be examined shall be determined for each pipeline number. The numbers shall berounded up to the next integer. If different nominal sizes are listed under a pipeline number, the scope of ex-amination shall be subdivided accordingly. Field welds shall preferably be examined.

Example:pipeline number with 25 site welds,specified scope of examination: 10 %,number of welds to be examined: 3.

If defects are found in a weld, the scope of examination shall be extended in accordance with the specified

standards. The extension of the scope of examination shall be borne and be documented by Contractor withthe preparation of a log sheet to be submitted to the Orderer at least weekly.

The quality of radiographs shall meet the requirements of the specified standards.

13.3 Ultrasonic examinationFor wall thicknesses of 20 mm, an ultrasonic examination may be performed instead of a radiographic ex-amination if qualified and certified examiners are available. In case of doubt radiographic examinations shalladditionally be performed, free of charge to the Orderer. The scope of the ultrasonic examination or any com-bination of ultrasonic and radiographic examinations will be determined by Orderer.

13.4 Liquid penetrant testLiquid penetrant tests should be applied whenever surface cracks are suspected. The manufacturer's instruc-

tions regarding the reaction and development time of the testing agent shall be observed.

13.5 Other examinationsHardness tests, magnetic particle tests, spectroscopic examinations and other tests may be required by pro-ject specifications or on demand of Orderer.

14 RepairsDefects of a weld shall be recorded according to section 15until they have been fully eliminated. Repairs shallonly be carried out after previous consultation with Orderer.

Visible defects shall be removed by grinding and subsequent welding. Internal defects shall be eliminated bygrinding or flame-gouging (same restrictions apply as for flame-cutting) and subsequent welding. The repair ofwelds shall be performed in accordance with the respective welding procedure specification.

Repaired welds shall be subjected to the same non-destructive examination method revealing the defect.PWHT (if applicable) and examination of repaired welds shall be borne by Contractor.


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15 Documentation15.1 Welding documentation

For each isometric or pipeline number a welding documentation shall be prepared by Contractor in accor-dance with the specified piping design code under consideration of the applicable laws and acts and furthercontractual requirements. A welding documentation shall consist of, but is not limited to:

Isometric or pipeline number

Piping class

Weld joint number, as marked on the attached corresponding as-built isometric drawing, and used for allreports

Weld joint dimensions (e. g. diameter and wall thickness)

Weld joint indication for weld repair, cut and re-welded

Type of joint (butt / fillet)

Welding procedure specification used

Welding date

Welder identification mark(s). In case of more than one welder the allocation of welders to weld runs shallbe stipulated.

NDT information Date of NDT

Type of NDT (visual, radiographic, ultrasonic, magnetic particle, penetrant, hardness testing)

NDT result

Report number. NDT reports shall be compiled in separate folders. For visual testing reports are notrequired.

PWHT information Date of PWHT

Report / chart number. Report / charts shall be compiled in separate folders.

Welding documentation shall provide a complete history of welds by listing all preceding defective joints (ifany).

Prior to pressure and leakage testing of piping systems the pertaining welding documentation shall be submit-ted to Orderer for approval.

The radiographs of each weld examined, including the radiographs of defective welds and repaired welds,shall be marked according to the drawings (isometric or pipeline number, weld number, film data, welder'sidentification symbol). They shall be attached to the pertaining non-destructive examination report.

15.2 Final welding documentationThe final welding documentation consists of, but is not limited to:

General welding documentation Procedure Qualification Records

Welding Procedure Specifications

Welder qualification / skill certificates

NDT reports

PWHT reports

Material certificates for welding consumables and auxiliaries, if applicable

Welding documentation for each isometric / pipeline number, as specified in section 15.1.


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Reference standards

Uhde standards:UI 9253-12 : 2008-02 Erection; Surface treatment of austenitic chromium nickel steelUN 9240-01 : 2009-11 Erection; Welding of piping; Unalloyed steel, Materialcode BAUN 9240-02 : 2009-11 Erection; Welding of piping; Unalloyed steel, Materialcode BBUN 9240-03 : 2009-11 Erection; Welding of piping; Unalloyed steel, Materialcode BCUN 9240-04 : 2009-11 Erection; Welding of piping; Unalloyed steel, Materialcode BEUN 9240-05 : 2009-11 Erection; Welding of piping; Unalloyed steel, Materialcode BGUN 9240-06 : 2009-11 Erection; Welding of piping; Unalloyed steel, Materialcode BHUN 9240-07 : 2009-11 Erection; Welding of piping; Unalloyed steel, Materialcode BMUN 9240-08 : 2009-11 Erection; Welding of piping; Unalloyed steel, Materialcode BOUN 9241-01 : 2009-11 Erection; Welding of piping; Low-alloy steel, Materialcode HBUN 9241-02 : 2009-11 Erection; Welding of piping; Low-alloy steel, Materialcode KEUN 9241-03 : 2009-11 Erection; Welding of piping; Low-alloy steel, Materialcode KFUN 9242-01 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode EBUN 9242-02 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode ECUN 9242-03 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode EFUN 9242-04 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode EGUN 9242-05 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode EKUN 9242-06 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode ELUN 9242-07 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode EMUN 9242-08 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode ENUN 9242-09 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode EOUN 9242-10 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode EPUN 9242-11 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode EQ

UN 9242-12 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode FDUN 9242-13 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode FEUN 9242-14 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode FFUN 9242-15 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode FGUN 9242-16 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode FHUN 9242-17 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode FIUN 9242-18 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode GKUN 9242-19 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode GMUN 9242-20 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode GOUN 9242-21 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode GZUN 9242-22 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode EHUN 9242-23 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode EIUN 9242-24 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode KDUN 9242-25 : 2009-11 Erection; Welding of piping; High-alloy steel, Materialcode KGUN 9243-01 : 2009-11 Erection; Welding of piping; Nickel alloy, Materialcode NBUN 9243-02 : 2009-11 Erection; Welding of piping; Nickel alloy, Materialcode NCUN 9243-03 : 2009-11 Erection; Welding of piping; Nickel alloy, Materialcode NHUN 9243-04 : 2009-11 Erection; Welding of piping; Nickel alloy, Materialcode NNUN 9243-05 : 2009-11 Erection; Welding of piping; Nickel alloy, Materialcode NPUN 9243-06 : 2009-11 Erection; Welding of piping; Nickel alloy, Materialcode NQUN 9243-07 : 2009-11 Erection; Welding of piping; Nickel alloy, Materialcode NRUN 9243-08 : 2009-11 Erection; Welding of piping; Nickel alloy, Materialcode NSUN 9243-09 : 2009-11 Erection; Welding of piping; Nickel alloy, Materialcode NTUN 9243-10 : 2009-11 Erection; Welding of piping; Nickel alloy, Materialcode NUUN 9243-11 : 2009-11 Erection; Welding of piping; Nickel alloy, Materialcode NV

UN 9244-01 : 2009-11 Erection; Welding of piping; Titan alloy, Materialcode MAUhde forms:UF 9253-01 : 2008-02 Erection; Welding data for pipingUF 9253-03 : 2008-02 Erection; Welding data for piping; Applicable standards


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E07-07

EN ISO standards:EN ISO 13916 : 1996-08 Welding - Guidance for the measurement of preheating temperature, inter-

pass temperature and preheat maintenance temperature

AmendmentsIn comparison with UI 9253-06 Part 5: 2008-09, the following amendments have been made:

Reference standards have been updated.

UI 9253-06 Part 1 E (2009-11)-WeldingAndWeldExaminationOfMetallicPiping

Documents

Transcript of UI 9253-06 Part 1 E (2009-11)-WeldingAndWeldExaminationOfMetallicPiping