asme viii_comparisons.xls

TOPIC / SUBJECT Div 1 Div 2

1 SNT-TC-1A 1996, Addenda '98 1996, Addenda '98

2 CP-189 ACCP 1995 Rev 3, Nov. 97 1995 Rev 3, Nov. 97

3 NDT Method as per ASME Sec V ASME Sec V

4 Vision Test J2 J2

5 MPE

6 LPE

7

8

9 Not specified separately. Not specified separately.

10

SR. NO.

Wherever MPE is described in this division it shall be done as per Appendix - 6

Appendix - 9 & Article 9.3 (Article 7 of Section V) provides detail requirements in methods and procedures and the additional requirements specified in the appendix. MPE shall be performed as per written procedure certified by manufacturer.

Wherever LPE is described in this division it shall be done as per Appendix - 8

Appendix - 9 & Article 9.2 (Article 6 of Section V) provides detail requirements in methods and procedures and the additional requirements specified in the appendix. LPE shall be performed as per written procedure certified by manufacturer.

Role of LEVEL-1 Qualification

Not specified separately. Manufacturer's written practice (as per SNT-TC-1A) shall be followed.

Not specified separately. Manufacturer's written practice (as per SNT-TC-1A) shall be followed.

Qualification of persons - Level III

By Nomination, by examination Specific exam can be waived off for ASNT qualified person

By Nomination, by examination Specific exam can be waived off for ASNT qualified person

Qualification to perform other NDE methods

Verification of NDE personnel certification

Not specified separately. As per Sec V requirements shall be meet. Manufacturer shall certify that personnel performing and evaluating NDE by this division have been qualified and certified in accordance with their employer's written practice, SNT-TC-1A

Manufacturer shall certify that personnel performing and evaluating UT by this division have been qualified and certified in accordance with their employer's written practice, SNT-TC-1A shall be used as guideline.

11 RT - TechniqueASME Sec V article 2

Ug not mandatory Ug not mandatory

12

13

14 Forgings SA 388 SA 388

15 UT welds

16 weld buidlup areas UT not mandatory UT not mandatory

Article I-3 pf Div 2 Article I-5 Div 2 - Acceptance criteria

RT - Record Maintenance

Radiographs to be retained till Manufacturer's Data Report (MDR) signed by AI

As per I-5, Div 2, Sec VIII AI-501, a written procedure of RT not required

NDT of plain & clad plates for special

application (Normal Beam)

Sa 578 Level B (by default) Extent: not 100% (by grid lines)

Sa 578 Level B (by default) Extent: not 100% (by grid lines)

Article 4 of Sec V, Appendix 12 of Sec Viii Div 1 Extent: UW- 11 of Sec VIII Div 1

Article 4 of Sec V Article 1 Extent: Article 1

Div 3

1996, Addenda '98 + Article KE-1 of Div 3 (KE-112 to 115)

1995 Rev 3, Nov. 97

ASME Sec V + modifications as per Article KE-1

J1 for VT J2 for other NDT methods

According to ASME sec V, Article - 7. IF prod method used, procedure shall also contain steps to be taken to prevent are strikes & steps to be taken to prevent arc strikes & steps to remove arc strikes which may occur. That affected material has been removed. See KE - 210 / After Hydro all pressure boundary components need to be wet MPI tested

LPE shall be in accordance with Sec V, Article 6./ After Hydro, all pressure boundary components

A level - 1 individual shall be qualified to perform specified set-up, calibrations and tests and to record & evaluate data by comparison with specific acceptance criteria defined in written instructions. The Level - 1 individual shall implement these.

By examination only ASNT L-iii specific compulsory with 80 % marks Employer has to ensure the above.

NDE methods not covered by the referenced qualification document, personnel shall be qualified to comparable levels of competency by subjection to comparable examination on the particular method involved. The emphasis shall be on the individual's ability.

The certificate holder has the responsibility to verify the qualification and certification of NDE personnel employed by material manufacturers and material suppliers and subcontractors who provide NDE services to them.

Ug mandatory

SA 388 + KE-232

mandatory UT

ASME Sec V Article - 2 + Article KE-1 of Div 3/ Root geometric indications acceptable if density variation is not abrupt

Radiographs to be retained till Manufacturer's Data Report (MDR) signed by AI NDE procedures, Records of procedure qualification, Records of personnel qualification, NDE reports & as built sketches showing all relevant indication

SA-578 Article KE-2, KE-222 Extent 100% Stringent than level B but liberal compared to level C of SA578

UT is mandatory,Article 4 & 5 of Sec V & KE-3 of Div 3 Extent: 100 At A, B, C & D.CC2235 not applicable.However TOFD can be used for planar defects for Thk.>51mm welds.

Code comparision-related to U3.

Issue ASME SEC I ASME SEC VIII –DIV.1 ASME SEC VIII – DIV.2

Name Power Boilers

Stamp S U U2

Not addressed

form-U1,U1-A form-AI

Form-P4/P4M form-U2,U2-A form-A2

Form-P6 form-U4 form-A3

Rules for construction of Pressure vessel

Rules for construction of Pressure vessel design-Alternative rules

Hydro test Pr. Gauge / Transducer limitation

1.5 to 4 times of test pressure in dial gauges and No limit in Pressure transducers



Hydro test witnessing

PG-99: At Maximum allowable working pressure after holding at test pressure

UG-99: At At Test pressure divided by 1.3 after Holding at test pressure

ART :T-3 AT-355 At ¾ th of test pressure or Design pressure whichever greater after holding at Test pressure

Pneumatic witnessing

UG-100 :At Test pressure divided by 1.1 after Holding at test pressure

Art:AT-4 :AT-423 At ¾ th of test pressure or Design pressure, whichever greater after holding at Test pressure

Data reports-Final

form-P2/P2M/P2A/P2AM/P2B/P2BM/P3/P3M/P3A/P3AM ***

Partial data report

Supplement form

Transfer of Job within different units of same Co.

Permitted with out Partial data report, Quality system to address that



ASME SEC VIII - -DIV.3

U3

Not addressed

form-K1, K1-M

form-K2, K2-M

form-K3

Not addresses in the code

Rules for construction of Pressure vessel design-Alternative rules-High pressures

1.5 to 4 times of test pressure in dial gauges as well as Pressure transducers

Art KT-3 : KT-330 During pressure raising it self verify pressure drops. If satisfactory, witness test at design pressure after satisfactory holding in test pressure.

SL.NO. TOPIC / SUBJECT

1 PQR, Qualificatiom UW, 28 ASME Sec.IX AF- 210, ASME Sec.IX

2 PTC requirements UNF-95, UHA-52

3

4

5

ASME Sect.VIII Div.1 ( Published in

1940)

ASME Sect.VIII Div.2 ( Published in

1968)

Procedure qualification test plate & vessel test plate shall be as per AT-200. One PTC for each weld procedure used for Catagory A & B with execptions as per AT-203.1(b) No. Of vessel test plate shall be as per AT-203.1. Location, orientation, temperatur

Welders & welding operator's qualification requirments

UW-29 Welders & welding operators for pressure parts & load carrying NPP to PP attachments shall be qualified as per ASME Sect. IX.

AF-210 Welders & welding operators for pressure parts & load carrying NPP to PP attachments shall be qualified as per ASME Sect. IX.

Repair of weld joints & their requirements

UW-38 : Defects such as cracks, pinholes and incomplete fusion detected visually or by the hydrostatic test or pneumatic test or by examinations prescribed in UW-11 shall be removed by mechanical means or by thermal gouging process. After which the weld s shall be re welded

AF_250, AF-253, Weld repair shall be reexamined a by the method of original examination for the weld

Repair base material & their requirements

UG-78 : Repair of defective aterial shall be repaired provided aacceptance by the Inspector is first obtained for the method and extent of repair.

Repair of defective base material shall be done as per requirements of AF-104. LPE/MPE after removal of defects & acceptance as per Art. 9.1 & 9.2. If repaired by welding then procedure & weld shall be qualified as per Sect. IX, AF- 104.3 If depth of repair is less than 100 PT/MT is required. IF depth exceed either 10mm or 1/2 T, RT is required.

ASME Sect.VIII Div.3 ( Published in 1997)

KF-214, Qualification as per Sex.IX with measurement of YS as required for base metal.

KT-2 : Impact testing of the welded vessels., KT-230 : Impact test of production test plates Each welding procedure used for the production. I

KF-215, ASME sex. IX and KT-2. Mechanical testing is required for Performance qualification.Qualification By NDE is not permitted

KF-710 Material repair where repair by welding is restricted. KE-2 requiremetns of examination and repair of base material .

KF-240 , KF-1170, shall be used for repair of the welding. KE- 211 Removal of defect by grinding. KF-212- Removal of defect by weldind. KE- 212.4- If depth of repair is less than 100 PT/MT is required. IF depth exceed either 10mm or10% of section thk. T, UT as per KE-102 & KE-333 is required.

SL.NO. TOPIC / SUBJECT

1 No Change No Change

2 Not Specified Same as Div 3

3 KF- 120 Material Forming No Change No Change








11 No Change

12 No Change



ASME Sect.VIII Div.1(Published in 1940)

ASME Sect.VIII Div.2 (Published in 1968)

KF-112: Material Identification

KF-601: Marking on plates & other materials (Q&T Steel)

KF-121 Material PreparationKF-121.1 Examination of Materials

KF-121.3 Finish of exposed inside edge of nozzles

KF-130 Tolerances on Cylindrical & Spherical Shells & HeadsKF- 131 Cylindrical shells (Ovality)

KF- 132 Spheriacl shells& Formed heads

KF-204 Final Weld Bead Finish

KF-614 Final Weld Bead Finish

KF-215 Test of Welders & Welding operators

KF-232 Cleaning of Surfaces to be welded.

No Change (1" on either side)

KF-234 Allignment tolerances for edges to be Butt Welded

Long-Seam (1/4t - 10mm max)

Circ-seam (1/4t to 19mm max)

1:3 taper

KF-236 Removal of temp. attachments & arc strikes

KF-238 Identification marking or Records for Welders & Welding operators

15

16

Repair of weld joints & their requirements

UW-38 : Defects such as cracks, pinholes and

incomplete fusion detected visually or by the hydrostatic test or

pneumatic test or by examinations prescribed in UW-11 shall be removed

by mechanical means or by thermal gouging process.

After which the weld s

Weld repair shall be examined after surface

preparation by LPE / MPE as per Article 9.1 & 9.2 and

then after repair welding RT in accordance with

Article I-5 where dept of weld deposition is > 10 mm or one half of the material

thk.If any repair after PWHT

Repair base material & their requirements

UG-78 : Repair of defective aterial shall be repaired

provided approval of inspector is first obtained for method and extent of repairs. UF-37: Forged construction material :

Surface defects, such as chip marks, blemishes or

other irregularities shall be

Repair of defective base material shall be done as per requirements of AF-

104. LPE/MPE after removal of defects &

acceptance as per Art. 9.1 & 9.2. If repaired by

welding then procedure & weld shall be qualified as per Sect. IX, If BM require

Impact test

Low stress punch to be used. Stamping to be omitted on plates less than 13mm thk.

No Change - Grind - M.T. / P.T.

ASME Sect.VIII Div.3(Published in 1997)

NO ChangeOriginal marking / Transferred Marking / Coded Marking Acceptable

NO ChangeProcess should not impair the mechanical properties

NO Change : Cut edges Thk >= 1 1/" (38mm) MT/PTAdded: U.T. on Nozzle opening area

NO Change Inside edge of Nozzles (flush with shell) - radius of t/4 or 3/4" (19mm) whichever is smallerProtruding Nozzles - radius on inner & outer surface of the neck - tn/4 or 3/8" (10mm) whichever is smaller

NO Change: 1% of Nominal Diameter

NO Change Inner surface of spherical shells & formed heads shall not exceed +1 1/4% & -5/8% of the nominal vessel I.D.

AddedFinish welds shall be ground or machined to blend with the surface of the part being joined. Both the blend radii & the surface finifh of the weld deposit shall be inspected to ensure they comply to the design requirements of the engineering design-- Design to specify weld finish

NO Change All wek\ld depoisits shall merge smoothly into base matal without abrupt transitions

AddedMechanical testing required for welder qualification

Changed : Detrimental oxide shall be removed from the weld metal contact area for a distance of atleast 2 in. (51mm) from WEP

Changed : Long-Seam (t/5 - 2.4mm max)Circ-seam (t/5 to 6mm max) 1:3 taper

No Change - @ 3 feet for thk over 6mmRecord keeping also acceptable.

KF-240 , KF-1170, shall be used for repair of the welding.

KF-710 Material repair where repair by welding is restricted. KE-2 requiremetns of examination and repair of base material .

asme viii_comparisons.xls

Documents