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Issue 07.2005

Linde AG

Linde Engineering Division

Procurementstandard

Material Requirements for Machine Parts

LINDE STANDARD

301-01

Orig.: TAW/Krner Checked: TAM/Prunner Appr.: TAW/Dr. Hock Page 1 of 7 Replaces Issue 04.96

C o n t e n t s Page

1 Scope ............................................................................1 2 Normative references..................................................1 3 Definitions, Abbreviations ..........................................1 4 Qualification of the Vendor and his Subvendors .....2 5 General Requirements for Materials..........................2 5.1 Selection of Materials ....................................................2 5.2 Cleaning, Grinding, Marking ..........................................2 6 Specific Requirements for Castings..........................2 6.1 Austenitic Steel Castings ...............................................2 6.2 Spheroidal Cast Iron (Ferritic Ductile Iron) ....................2 6.3 Grey Cast Iron ...............................................................3 6.4 NDE of Castings ............................................................3 7 Welded Parts and Repair Welding .............................4 7.1 Welding and Heat Treatment.........................................4 7.2 Qualifications .................................................................4 7.3 Repair Welding of Castings ...........................................4 7.4 Non-destructive Examination of Welds..........................4 8 Testing, Inspection, Certification...............................5 Annex A Normative references..........................................7

1 Scope This standard covers the minimum requirements for materials and welding of machine parts.

This standard is not applicable for pressure vessels and piping systems of machine units, and does not cover running tests or other functional tests of machines.

Statements made in the purchase order (P.O.) and project specifications shall have priority over the requirements of this standard.

It shall be noted that specific requirements for corrosive service apply additionally, if specified in the P.O.

2 Normative references This standard contains provisions which, through undated references in this text, constitute provisions of other publications. The normative references are cited at the respective part in the text and the publications are listed in annex A. Issues valid at the time of placement of order shall govern.

3 Definitions, Abbreviations Vendor: A company who has received a purchase order from Linde for the supply of a machine and its

auxiliaries.

Subvendor: Manufacturer of parts (materials) ordered by Vendor.

Machine: According to this Standard machines are: - Various types of compressors, - Various types of pumps, - Various types of turbines, including spare parts

S Surface V Volume

Linde AG - Linde Engineering Division Issue 07.2005 LS 301-01 Page 2 of 7

NDE Non-Destructive Examination PT Liquid Penetrate Examination MT Magnetic Particle Examination UT Ultrasonic Examination RT Radiographic Examination

RV severity level describing the acceptance criteria for RT, refer to table 4

Critical Sections Sections with abrupt changes in shape, at junction of risers, gates or feeders to the casting

4 Qualification of the Vendor and his Subvendors The Vendor and his Subvendors shall operate a quality management system suitable for their work. Linde reserves the right to review the quality management systems at Vendors/Subvendors shops.

Operating a quality management system implies that the Vendor as well as his Subvendors are using skilled and/or qualified personnel and are in possession of all necessary manufacturing and testing equipment, to handle the purchase order in a professional manner.

5 General Requirements for Materials The general requirements for materials are defined in EN 1559-1, -2 and -3 and API 617, whichever is specified in the Purchase Order (P.O.) or other applicable project specifications.

5.1 Selection of Materials Vendor is responsible to select proper materials suitable for the operating data specified by Linde for the machine, taking into account the requirements of this standard. Selected materials are subject to final acceptance by Linde.

Materials according to other standards than EN or ASTM/API shall be specified by Vendor (with full chemical analysis, heat treatment, mechanical properties, testing, certification as well as reference to equivalent materials to above mentioned standards) together with his quotation, for acceptance by Linde.

Chemical analysis, mechanical properties and tests shall fully conform to the material standards applied.

In addition unalloyed C- and C-Mn-steel plates and forgings intended for welding operations shall meet the following requirements:

Yield strength 370 N/mm (53 ksi) and tensile strength 500 N/mm (72 ksi) with minimum values each according to the material standard applied;

Carbon content 0,25 %.

5.2 Cleaning, Grinding, Marking Before non-destructive examination and/or assembly of the machine parts, each part shall be cleaned by pickling (free of chloride) or by other appropriate methods, to remove foreign materials, mill scale, etc.

Grinding disks used on ferritic steels shall not be used on austenitic stainless steels or high nickel alloys.

Major components shall be properly marked for traceability against material certificates.

6 Specific Requirements for Castings 6.1 Austenitic Steel Castings Austenitic steel castings shall be solution annealed.

6.2 Spheroidal Cast Iron (Ferritic Ductile Iron) Spheroidal cast iron shall be according to

EN 1563, but excluding type EN-GJS-600, 700, 800, 900; ASTM A 395; ASTM A 536, for non-critical parts only with prior approval by Linde.

Acceptable graphite formation revealed in the microstructure of the casting shall contain a minimum of

90 % form VI as per EN ISO 945, for EN materials; 90 % of type I or II, ASTM A 247 plate I for ASTM materials.


6.3 Grey Cast Iron Grey cast iron shall be according to

EN 1561 type EN-GJL-200, 250 or 300; ASTM A 278 Cl. 20, 25 or 30.

Use of EN 1561 type EN-GJL-350 and ASTM A 278 Cl. 35 and higher need prior written approval by Linde.

Grey cast iron EN 1561, type EN-GJL-200 and EN-GJL-250 and ASTM A 278 Cl. 20 and Cl. 25 may be used for piston-type compressor casings in liquefied gas service at temperatures not below -105 C, if the following is fulfilled:

Hydrostatic pressure test with 1,5 times the maximum allowable working pressure, but not less than 20 psi (1,4 bar);

Vendor shall submit to Linde references for the intended service for acceptance.

6.4 NDE of Castings All sections have to be tested by a surface and volume examination method according to the specified standard. For the required standards for NDE and acceptance criteria of steel castings refer to table 1.

NDE personnel shall be qualified according to table 2.

In case of special requirements for the surface quality or the surface roughness, they will be specified in the project documents.

For NDE the castings shall be sound and free from porosity, hot tears, shrink holes, cracks, scale, blisters and similar injurious defects.

Reports for all NDE performed are required and shall be included into the final documentation.

Table 1: Non-destructive Examination for Castings

Testing of EN Materials ASTM Materials Testing Method Testing Standard Acceptance Criteria Testing

Standard Acceptance Criteria

Welding Ends MT

EN 1369 4) EN 1369 SM1/LM1/AM1 ASTM E 709 API 617 2.3.1.12.3 and ASTM A 903, Level 1

PT EN 1371-1/-2 3) EN 1371 SP1/CP1/LP1/AP1 ASTM E 165 ASTM A 903, Level 1 RT EN 12681 5) Table 4 RV1 1) ASTM E 94 ASTM E 446/E 186/E 280,

Level 1 Critical Sections MT EN 1369 5) EN 1369 SM2/LM2/AM2 ASTM E 709 API 617 2.3.1.12.3 PT EN 1371-1/-2 3) EN 1371 SP2/CP2/LP2/AP2 ASTM E 165 ASME VIII/1, App. 7 UT EN 12680-1 EN 12680-1 quality class 3 1) ASTM A 609 ASME VIII/1, App. 7 RT 2) EN 12681 5) Table 4 RV3 1) ASTM E 94 ASME VIII/1, App. 7 Other Sections MT EN 1369 4) EN 1369 SM3/LM3/AM3 ASTM E 709 API 617 2.3.1.12.3 PT EN 1371-1/-2 3) EN 1371 SP3/CP3/LP3/AP3 ASTM E 165 ASME VIII/1, App. 7 UT EN 12680-1 EN 12680-1 quality class 4 1) ASTM A 609 ASME VIII/1, App. 7 RT 2) EN 12681 5) Table 4 RV4 1) ASTM E 94 ASME VIII/1, App. 7 1) For design temperatures > 450 C quality class "2" for "3" and "3" for "4" is required (upgrading). 2) For ferritic material UT-Examination should be used with preference. 3) For PT sensitivity level 2 acc. to EN ISO 3452-3 is required as a minimum. 4) For MT manufacturer is free to choose a testing systems complying with EN ISO 9934. MT shall be

performed on the examined areas in both directions. 5) Class A may be applied for the determination of the quality of the image according to EN 462-3 and

EN 462-4. Marking of films according to Vendors standard. Testing class as per EN 444 according to EN 12681 1).

Extent of NDE and, if required, areas to be examined will be specified in the project documents.


7 Welded Parts and Repair Welding 7.1 Welding and Heat Treatment Welding specifications shall be observed for each welding operation. Welding consumables shall be of similar analysis as the base material with comparable minimum tensile properties and sufficient toughness. The root of weld seams shall be removed to sound metal by flame cutting or chipping followed by grinding or machining.

All fabricated castings, regardless of thickness, shall be postweld heat treated. No welding is permitted after final heat treatment. Otherwise re-heat treatment is required.

All welding on spheroidal cast iron as well as grey cast iron require prior written approval by Linde.

7.2 Qualifications Welders, personnel for NDE and welding procedures shall be qualified prior to start of welding according to table 2.

Table 2: Welding and NDE Requirements

EN Standards, Stahl-Eisen-Werkstoffbltter

ASME/ASNT Standards

Welder's qualification: EN 287-1 or prEN ISO 9606-1 1) ASME IX Personnel for NDE EN 473 or equivalent ASNT SNT TC 1A Procedure qualification:

EN ISO 15607 or EN 288-1 1) plates, forgings

ASME IX (plates, forgings)

SEW 110 1) or prEN ISO 15614-3 (castings)

ASTM A 488 (castings).

Welding Specification: EN ISO 15609-1 ASME IX 1) Should not be used for new projects, if practicable.

7.3 Repair Welding of Castings All repairs shall be made in accordance with the applicable welding specification (refer to Para 7.2). The defects shall be removed to sound metal by flame cutting or chipping followed by grinding or machining. After removal of defects the area shall be examined by MT or PT. Major repairs of defects as specified below require prior written acceptance by Linde:

a) 40 % of thickness or b) depth 60 mm or c) length 150 mm.

A detailed description of the defect and a quality plan for the planned repair work shall be submitted to LINDE for acceptance. Major repairs shall be documented (position, area, weld details, heat treatment as well as non-destructive examination).

7.4 Non-destructive Examination of Welds For construction welds and repair welds on casting repairs the requirements for NDE incl. applicable acceptance criteria are defined in table 3.

Reports for all NDE performed are required and shall be available during inspections. The NDE reports shall be included into the final documentation.


Table 3: Non-Destructive Examination of Welds

European Standards AMSE/ASTM/API Standards

Type of weld Testing Method

Testing Standard Acceptance Criteria Testing Standard

Acceptance Criteria

Construction MT EN 1290 AD 2000 HP5/3 ASME V ASME VIII/1, App. 6 Welds PT EN 571-1 3) AD 2000 HP5/3 ASME V ASME VIII/1, App. 8 UT AD2000 HP5/3 1) AD 2000 HP5/3 ASME V ASME VIII/1, App. 12 RT EN 1435 1) AD 2000 HP5/3 ASME V ASME VIII/1, App. 4 Weld Repairs MT EN 1369 4) EN 1369 SM2/LM2/AM2 ASTM E 709 API 2.3.1.12.3 of Castings PT EN 1371-1/-2 3) EN 1371 SP2/CP2/LP2/AP2 ASTM E 165 ASME VIII/1 App. 7 UT EN 12680-1 EN 12681 quality class 2 ASTM A 609 ASME VIII/1 App. 7 RT2) EN 12681 5) Table 4 RV2 ASTM E 94 ASME VIII/1 App. 7 1) Examination Class (A, B or C) according to AD 2000 HP5/3. 2) For ferritic material UT-Examination should be used with preference. 3) For PT sensitivity level 2 acc. to EN ISO 3452-3 is required as a minimum. 4) For MT manufacturer is free to choose a testing systems complying with EN ISO 9934-2. MT shall be

performed on the examined areas in both directions. 5) Class A may be applied for the determination of the quality of the image according to EN 462-3 and

EN 462-4. Marking of films according to Vendors standard. Testing class as per EN 444 according to EN 12681 1).

Extent of NDE for "Construction Welds" and "Weld Repairs of Casting" is 100%.

8 Testing, Inspection, Certification Linde will specify the required testing and certification for machine parts. Linde may participate in tests and inspection of machine parts at Vendors or Subvendors shop, as deemed necessary and/or if specified in Vendors quality control plan / fabrication and inspection plan.

Revision: Updating standards; Table 4 from withdrawn DIN 1690-2 added Previous Issues: 09.93, 04.96 Responsible department(s) for the technical content: TAM, TAW Refer to protection notice ISO 16016


(RV)


Annex A Normative references

A.1 German, European and international standards EN ISO 945 Cast iron Designation of microstructure of graphite EN ISO 3452-3 Non-destructive testing penetrant testing part 3: reference test blocks EN ISO 9934-2 Non-destructive testing Magnetic particle testing Part 2: Detection media EN ISO 15607 Specification and qualification of welding procedures for metallic materials General rules EN ISO 15609-1 Specification and qualification of welding procedures for metallic materials Welding

procedure specification Part 1: Arc welding EN 287-1 Qualification test of welders Fusion welding Part 1: Steels EN 288 Specification and approval of welding procedures for metallic materials Part 1: General

rules for fusion welding EN 444 Non-destructive testing; general principles for the radiographic examination of metallic

materials using X- rays and gamma-rays EN 462-3 Non-destructive testing Image quality of radiogrammes Part 3: Image quality classes

for ferrous metals EN 462-4 Non-destructive testing Image quality of radiographs Part 4: Experimental evaluation

of image quality values and image quality tables EN 473 Non-destructive testing Qualification and certification of NDT personnel General

principles EN 571-1 Non-destructive testing Penetrant testing Part 1: General principles EN 1290 Non-destructive testing of welds Magnetic particle testing of welds EN 1369 Founding Magnetic particle inspection EN 1371-1 Founding Liquid penetrant inspection Part 1: Sand, gravity die and low pressure die

castings EN 1371-2 Founding Liquid penetrant inspection Part 2: Investment castings EN 1435 Non-destructive testing of welds Radiographic testing of welded joints EN 1559-1 to -3 Gieereiwesen Technische Lieferbedingungen EN 1561 Founding Grey cast irons EN 1563 Founding Spheroidal graphit cast irons EN 12680-1 Founding Ultrasonic examination Part 1: Steel castings for general purposes EN 12681 Founding Radiographic examination AD 2000 HP5/3 Manufacture and testing manufacture and testing of joints non-destructive testing of

welded joints SEW 110 Procedure test for production welding at cast steel prEN ISO 9606-1 Approval testing of welders Fusion welding Part 1: Steels prEN ISO 15614-3 Specification and qualification of welding procedures for metallic materials Welding

procedure tests Part 3: Fusion and pressure welding of non-alloyed and low alloyed cast irons

A.2 American Standards ASME Boiler and Pressure Vessel Code (V, VIII/1, IX) API 617 Axial and centrifugal compressors and expander-compressors for petroleum, chemical and

gas industry services ASNT SNT TC 1A Personnel qualification and certification in non-destructive testing ASTM A 247 Test method for evaluating the microstructure of graphite in iron castings ASTM A 278 Specification for gray iron castings for pressure-containing parts for temperatures up to

650 F (350 C) ASTM A 395 Specification for ferritic ductile iron pressure-retaining castings for use at elevated

temperatures ASTM A 488 Practice for steel castings, welding, qualifications of procedures and personnel ASTM A 536 Specification for ductile iron castings ASTM A 609 Practice for castings, carbon, low-alloy, and martensitic stainless steel, ultrasonic

examination thereof ASTM A 903 Specification for steel castings, surface acceptance standards, magnetic particle and liquid

penetrant inspection ASTM E 94 Guide for radiographic examination ASTM E 165 Test method for liquid penetrant examination ASTM E 186 Reference radiographs for heavy-walled (2 to 4 in. [51 to 114 mm]) steel castings ASTM E 280 Reference radiographs for heavy-walled (4 to 12 in. [114 to 305 mm]) steel castings ASTM E 446 Standard reference radiographs for steel castings up to 2 in. [51 mm] in thickness ASTM E 709 Guide for magnetic particle examination

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