ASME Boiler and Pressure Vessel Code SECTION XI INTERPRETATIONS Volume 45 The Interpretations to the Code will be issued twice a year (July and December) up to the publication of the 2001 Edition of the Code.The Interpretations for each individual Sectionare published separately and are part of the update service to that Section; Interpretations of Section 111, Divisions 1 and 2, are part of the update service to Section Ill, Subsection NCA. Interpretations Volumes 36 through 41 were included with the update service to the 1995 Edition of theCode; Volume 42 is the first Interpretations volume to be included with the update service to the1998Edition. Section Vol. 42 VOl. 43 Vol. 44 VOl. 45 Vol. 46 VOl. 47 I Il-A 11-6 11-c 11-D Ill-NCA 111-3 IV V VI VI1 VIII-1 Vlll-2 Vlll-3 IX X XI 7/98 7/98 ... 7/98 ... 7/98 7/98 ... ... 7/98 7/98 7/98 7/98 ... ... 12/98 ... .. .. ... 12/98 12/98 12/98 ... ... ... 12/98 12/98 12/98 12/98 12/98 ... 7/99 7/99 ... ... ... 7I99 7I99 7199 ... *.. ... 7/99 7/99 7/99 7/99 ... 12 199 12 199 ... 12/99 12/99 ... ... .. ... 12/99 12/99 12/99 12/99 ... ... Copyright 0 1999 THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All RightsReserved QOI I19 COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
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ASME Boiler and Pressure Vessel Code SECTION XI
INTERPRETATIONS Volume 45
The Interpretations to the Code will be issued twice a year (July and December) up to the publication of the 2001 Edition of the Code. The Interpretations for each individual Section are published separately and are part of the update service to that Section; Interpretations of Section 111, Divisions 1 and 2, are part of the update service to Section I l l , Subsection NCA.
Interpretations Volumes 36 through 41 were included with the update service to the 1995 Edition of the Code; Volume 42 is the first Interpretations volume to be included with the update service to the 1998 Edition.
Section Vol. 42 VOl. 43 Vol. 44 VOl. 45 Vol. 46 VOl. 47 I Il-A 11-6 11-c 11-D Ill-NCA 111-3 IV V VI VI1 VIII-1 Vlll-2 Vlll-3 IX X XI
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Copyright 0 1999 THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
All Rights Reserved
QOI I19
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INTERPRETATIONS NO. 45 - SECTION XI
Replies to Technical Inquiries January 1,1999 through June 30,1999
FOREWORD
General Information This publication includes all written interpretations issued between the indicated dates by the ASME
Staff on behalf of the ASME Boiler and Pressure Vessel Committee in response to inquiries concerning interpretations of the ASME Boiler and Pressure Vessel Code. A contents is also included which lists subjects specific to the interpretations covered in the individual volume.
These interpretations are taken verbatim from the original letters, except for a few typographical and editorial corrections made for the purpose of improved clarity. In some instances, a review of the interpretation revealed a need for corrections of a technical nature. In these cases, a revised interpretation is presented bearing the original Interpretation Number with the suffix R and the original file number with an asterisk. Following these revised interpretations, new interpretations and revisions to them issued during the indicated dates are assigned Interpretation Numbers in chronological order. Interpretations applying to more than one Code Section appear with the interpretations for each affected Section.
ASME procedures provide for reconsideration of these interpretations when or if additional information is available which the inquirer believes might affect the interpretation. Further, persons aggrieved by an interpretation may appeal to the cognizant ASME committee or subcommittee. As stated in the Statement of Policy in the Code documents, ASME does not “approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or activity.
Each interpretation applies to the Edition and Addenda stated in the interpretation, or if none is stated, to the Edition and Addenda in effect on the date of issuance of the interpretation. Subsequent revisions to the Code may supersede the interpretation.
For detailed instructions on preparation of technical inquiries to the ASME Boiler and Pressure Vessel Committee, refer to Appendix V in Division 1, Appendix 111 in Division 2, and Appendix VI in Division 3.
Subject and Numerical Indexes Subject and numerical indexes have been prepared to assist the user in locating interpretations by
subject matter or by location in the Code. They cover interpretations issued from Volume 12 up to and including the present volume, and will be updated with each volume.
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Subject - Code Case N-416, Alternative Pressure Test Requirement for Welded Repairs or
Installation of Replacement Items by Welding, Class 1, 2, and 3 . . . . . . . . . . . . . . . . . IWA-4540(c), Pressure Testing of Class 1, 2, and 3 Items (1995 Addenda Through
the 1999 Addenda) ........................................................ IWA4700, Heat Exchanger Tubing; IWA-5120, System Pressure Tests for Repair/
Replacement Activities (1992 Edition With the 1992 Addenda) .................. IWA-7OOO (lWA4000 after the 1991 Addenda), RepairAteplacernent Activities; IWB-
2200, Preservice Examination; Table WB-2500-1. Examination Category B- M-2, Item B12.50, Valve Body-Exceeding N P S 4 (1977 Edition With the Summer 1978 Addenda Through the 1998 Edition) ....................................
IWA-7OOO (IWA-4000 after the 1991 Addenda), RepaidReplacement Activities (1977 Edition With the Summer 1978 Addenda Through the 1998 Edition) . . . . . . . . . . . . .
Qualification (1989 Edition) ................................................ . IWC-2200(b)(l), Preservice Examination (1983 Edition Through the 1998 Edition) .... Nomandatory Appendix J, Article J-3OO0, Preservice Inspection After Disassembly
and Reassembly of Component Supports (Article J-4O00, 1991 Addenda Through the 1995 Edition; Article J-3OO0, 1995 Addenda Through the 1998 Edition) ...........
Table WE-2500-1, Category E-G, Pressure Retaining Bolting, Item E8.10 and Footnote (4) (1989 Edition with the 1991 Addenda Through the 1995 Edition With the 1997 Addenda) ...................................................
Interpretation
XI-1-98-48
XI-1-98-51
XI-1-98-52
XI-1-98-43
XI-1-98-44 XI-1-98-49 XI-1-98-46
XI-1-98-53 XI-1-98-50
XI-1-98-47
XI-1-9845
File No.
IN99-004
IN99-011
IN99-013
IN98418
IN98-020 IN98-008 IN98-027
IN99-0 15 IN99-009
IN99-003
IN98-022
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Section XI - Interpretations No. 45 XI-1-98-43, XI-1-98-44, XI-1-98-45
Interpretation: XI-1-98-43
Subject: IWA-7000 (MA-4OOO after the 1991 Addenda), RepairReplacement Activities; IWB- 2200, Reservice Examination; Table IWB-2500-1, Examination Category B-M-2, Item B12.50, Valve Body-Exceeding NPS 4 (1977 Edition With the Summer 1978 Addenda Through the 1998 Edition)
Date Issued: March 5 , 1999
File: IN98-018
Question: In accordance with IWA-4OOO and IWA-7000 (as it applies to the stated applicability), and IWB-2200, is a preservice VT-3 examination per Category B-M-2, Item B12.50, required after replacement of valve-internal pressure boundary items?
Reply: No. Refer to Interpretation XI-1-86-20.
Interpretation: XI-1-98-44
Subject: IWA-7000 (IWA-4OOO after the 1991 Addenda), RepaidReplacement Activities (1977 Edition With the Summer 1978 Addenda Through the 1998 Edition)
Date Issued: March 5 , 1999
File: IN98-020
Question: Does IWA-7000 (IWA-4OOO after the 1991 Addenda) permit the Owner to revise the Design Specification and Design Report for an item?
Reply: Yes.
Interpretation: XI-1-98-45
Subject: Table IWE-2500-1, Category E-G, Pressure Retaining Bolting, Item E8.10 and Footnote (4) (1989 Edition with the 1991 Addenda Through the 1995 Edition With the 1997 Addenda)
Date Issued March 16, 1999
File: IN98-022
Question: Is it a requirement of Table NE-2500-1, Category E-G, Pressure Retaining Bolting, Item E8.10 that a visual, VT-1 examination be performed on a bolted connection when it is disassembled if a visual, VT-1 examination has already been performed during the inspection interval on the bolted connection with the bolting in place under tension, as permitted by Footnote (4)?
Reply: No.
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XI-1-98-46, XI-1-98-47 Section XI - Interpretations No. 45
Question: When establishing a successive inspection interval IS1 program, is it a requirement of IWB/C/D/E/F-2420(a) to follow the selection and sequencing of component examinations from the first inspection interval if it is not practical, giving consideration to differences in Section XI Code criteria?
Reply: No. It is the Owner’s responsibility to determine what is practical.
Interpretation: XI-1-98-47
Subject: Nonmandatory Appendix J, Article 5-3000, heservice Inspection After Disassembly and Reassembly of Component Supports (Article 5-4000, 1991 Addenda Through the 1995 Edition; Article J-3000, 1995 Addenda Through the 1998 Edition)
Date Issued: May 24, 1999
File: IN99-003
Question: Does support disassembly and reassembly exclusively to perform maintenance on another component require a new, preservice, VT-3-type visual examination prior to returning the system to service?
Reply: No,
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Section XI - Interpretations No. 45 XI-1-98-48
Interpretation: XI-1-98-48
Subject: Code Case N-416, Alternative Pressure Test Requirement for Welded Repairs or Installation of Replacement Items by Welding, Class 1, 2, and 3
Date Issued May 24, 1999
File: IN99-004
Question (1): Is it a requirement of Section XI that a reconciliation concerning NDE requirements and acceptance criteria between two Codes, (e.g., B31.7-1969 and ASME Section III, 1992 Edition, 1992 Addenda) be performed by a Level III for the applicable examination method?
Reply (1): No.
Question (2): Is it a requirement of Section XI that the reconciliation of an NDE procedure between two Codes (e.g., B31.7-1969 to ASME Section III,1992 Edition, 1992 Addenda) for requirements and acceptance criteria, be performed by a Level 111 for the applicable examination method?
Reply (2): No.
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XI-1-98-49, XI-1-98-50 Section XI - Interpretations No. 45
Question (1): If a component was examined and: (1) an indication was detected, (2) it was acceptable for continued service based on a flaw evaluation in accordance with IWB-3132.3 (3132.4 in earlier Editions), (3) it has been examined three (3) successive periods in accordance with IWB- 2420(b), and (4) the indication remains essentially unchanged, is the component acceptable for continued service without additional analyses?
Reply (1): Yes.
Question (2): If the component described in Question (1) is examined subsequent to the three successive examinations required by IWB-2420(b) and the indication remains essentially unchanged, is the component acceptable for continued service without successive examinations as required by IWB- 2420(b), or without additional analyses?
Reply (2): Yes.
Question (3): If a component was examined and: (1) an indication was detected, (2) it was acceptable for continued service based on a flaw evaluation in accordance with IWC-3122.3 (3122.4 in earlier Editions), (3) it has been examined in the next inspection per id in accordance with IWC- 2420(b), and (4) the indication remains essentially unchanged, is the component acceptable for continued service without additional analyses?
Reply (3): Yes.
Question (4): If the component described in Question (3) is examined subsequent to the examination in the next inspection period required by IWC-2420(b) and the indication remains essentially unchanged, is the component acceptable for continued service without successive examinations as required by IWC- 2420(b), or without additional analyses?
Reply (4): Yes.
Interpretation: Xl-1-98-50
Subject: IWC-2200(b)(l), Preservice Examination (1983 Edition Through the 1998 Edition)
Date Issued: May 24, 1999
File: IN99-009
Question: Is it a requirement of IWC-2200(b)(l), in the case of vessels only, that the preservice examination is performed after the hydrostatic test required by ASME Section III has been completed?
Reply: Yes.
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Section XI - Interpretations No. 45 XI-1-98-51, XI-1-98-52
Interpretation: XI-1-98-51
Subject: IWA-4540(c), Pressure Testing of Class 1, 2, and 3 Items (1995 Addenda Through the 1999 Addenda)
Date Issued: May 24, 1999
File: IN99-011
Question: Does IWA-4540(c) require a pressure test when installation of the item@) does not involve any replacement pressure-retaining items?
Reply: No.
Interpretation: XI-1-98-52
Subject: IWA-4700, Heat Exchanger Tubing; IWA-5120, System Pressure Tests for Repair/ Replacement Activities (1992 Edition With the 1992 Addenda)
Date Issued May 24, 1999
File: IN99-013
Question: Is it a requirement of IWA-4700 and IWA-5120 that when the area of a repair/ replacement activity that is required to be pressure tested and is not isolable within a portion of a system, that the entire system be subjected to a VT-2 examination?
Reply: No.
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Question (1): For the performance qualification of welding operators as required by IWB-4232.4, is it permissible to qualify the welding operator for a tube plug using the minimum ligament requirement of IWB-4232.2(d) and use that single performance qualification for both triangular and square pitch tubesheet configurations as long as the minimum ligament criteria and all essential variables of IWB- 4232.4 are met?
Reply (1): No, however this was revised in the 1997 Addenda.
Question (2): For the performance qualification of welding operators as required by IWB-4232.4, is it permissible to qualify the welding operator for a tubesheet plug using the minimum ligament requirement of IWB-4232.2(d) and use that single performance qualification for both tube and tubesheet plug configurations as long as the minimum ligament criteria and all essential variables of IWB-4232.4 are met?
Reply (2): No, however this was revised in the 1997 Addenda.
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Applicability alternative weld repair . removal cavity .............................. XI-1-95-25
XI-1 -95-29 corrective measures . of new bolting ................................ XI-1-92-01 fabrication of replacements ......................................... XI-1 -83-72 flaws detected outside of an inservice examination ...................... XI-1 -89-67 installation requirements ............................................ XI-1-83-85 instrument tubing ................................................. XI-1 -83-52 leakage . not found during a system pressure test ...................... XI-1 -92-03 material removal process . considered as thermal ...................... XI-1-95-60 material removal process . nonwelded ............................... XI-1 -89-70 material removal process . nonwelded ............................... XI-1 -89-70R metal removal to prepare surface for NDE ............................. XI-1 -89-56 owner ..................... , ........................ , ............ XI-1 -83-83 preventive maintenance ............................................ XI-1 -89-1 9 redundant canopy seal ............................................. XI-1 -89-1 9 repair program . installing replacements .............................. XI-1-83-42 repair/replacement activities . off site ................................ XI-1 -95-09
repair subsequent to N-Stamping . prior to N.3 ........................ XI-1 -83-1 0
shot peening ..................................................... XI-1-89-73 small items . replacement of ....................................... XI-1-92-60
through wall leakage .......................... , .................... XI-1-89-64 use of AIA for installing replacements ................................. XI-1 -83-38
XI-1 -98-44
XI-1 -83-46
storage tank . examination ......................................... XI-1-89-51
Brazing .......................................................... XI-1 -86-47 procedures and personnel ........................................... XI-1 -83-85
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Subject Interpretation Brazing (Cont'd)
Repair/Replacement Program ........................................ XI-1-86-23
Calibration angle beam ...................................................... XI-1 -89-1 1 confirmation - period of use ....................................... XI-1 -89-05 demonstration of equivalence ....................................... XI-1 -86-28
electronic memory ................................................ XI-1 -92-1 7 interim check ..................................................... XI-1 -89-62 of gages ......................................................... XI-1 -83-49 series of test ...................................................... XI-1 -83-49 standard ......................................................... XI-1 -86-28
Cj) Cumulative Index . Interpretations Vols . 12-45
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Subiect Interpretation File No . Page No . Component Supports (Cont'd)
XI-1 -86-48 XI-1 -86-49 XI-1 -86-63 XI-1 -89-61
Construction Code hydrostatic test .................................................... XI-1 -83-83
XI-1 -86-22 XI-1-86-52R
material manufacturers and suppliers ................................. XI-1 -83-50R
surface examination - acceptance criteria ............................. XI-1-86-52 use of later editions of ............................................. XI-1-86-12
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Subject Interpretation
Hydrostatic Test (Cont'd) when performed . order ........................................... XI-1 -89-63
Liquid Metal Cooled Plants inspection of inaccessible welds ..................................... XI-3-83-01 preservice system leakage test ....................................... XI-3-89-02 system leakage monitoring .......................................... XI-3-86-01
Material Manufacturer or Material Supplier qualification of ................................................... XI-1 -83-50
Quality Assurance Program . update ................................. XI-1 -86-44R
Metric Versus Customary ........................................... XI-1 -86-76
X I 4 -86-55R
Nondestructive Examination (see also Ultrasonic. Visual. and Volumetric Examinations) examination of dissimilar metal welds ................................. XI-1 -89-57 induction stress improvement ........................................ XI-1-83-71 items NPS 1 and smaller ............................................ XI-1-83-86
( 1 ) Cumulative Index . Interpretations Vols . 12-45
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BC85-526 I N99-009 IN86-026A I N86-02 6C IN88-001 lN89-024 lN97-036 IN87-005A
135 187 335
39
185
107 186 124 273 103 107 186 43
118 263 124 18 41
57 120 386 67 79
273 263
82 1 02 126 291
30 87
1 66 292 147 205
125 135 129 138 281 368 128 147 147 147 154
109 398 127 128 165 205 385 156
Cumulative Index . Interpretations Vols . 12-45
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Subject interpretation Preservice Examination (Cont'd) limited to ........................................................ XI-1-86-24 of Class 2 vessel .................................................. XI-1 -89-42 of manways - bolting ............................................. XI-1-83-1 1 piping, pumps. and valves - hydrostatic testing ........................ XI-1-86-22 pumps and valves - VT-3 prior to service ............................. XI-1-86-20 replacement ...................................................... XI-1 -95-47 ultrasonic examination - acceptance standards ........................ XI-1-86-37
bolts and studs - examination ...................................... XI-1-83-76
boundary - alternative test ......................................... XI-1 -86-25 boundary - flaw evaluation ........................................ XI-1-92-35 boundary-machining of sealing surface ................................ XI-1-98-08 component - through-wall leakage .................................. XI-1 -89-64R components and their supports - summary report ...................... XI-1-83-03 components - exempt from visual ................................... XI-1 -89-53 electrical containment penetrations . . . . . . . . . I ......................... XI-1-98-35 material - nonwelded work ........................................ XI-1-86-21
material - sealants ................................................ XI-1 -95-26 parts - hydrostatic test ............................................. XI-1 -83-83 parts - ordered as spares ........................................... XI-1-83-21 R welds - examination schedule requirements ........................... XI-1-89-14 welds in piping - NDE ............................................ XI-1-86-57
Procurement of material ......................................................... XI-1-86-55R material . MM and MS qualification ................................. XI-1-83-50R
parts as material .................................................. XI-1 -83-21 R parts by non-Certificate Holder ...................................... XI-1-89-29 pipings, valves. and fittings - NPS 1 and smaller ....................... XI-1 -89-04 pressure retaining part - Code Data Report ............................ XI-1-83-21R replacements - later edition ........................................ XI-1 -86-1 2 replacements - perform work on it .................................. XI-1-86-59 replacement - stamping ........................................... XI-1-83-20 spares ........................................................... XI-1-83-21R
spares - transfer of custody ......................................... XI-1 -89-07
XI-1 -89-24
XI-1 -86-1 8
Pumps Class 2 and 3-exemption from examination ........................... XI-1-98-12 instrument accuracy ............................................... XI-1-89-55
required weld examinations ......................................... XI-1 -95-63 testing of - inservice .............................................. XI-1 -92-63 visual VT-3 - prior to service ....................................... XI-1 -86-20 vibration measurement instrumentation ................................ XI-1 -86-33
XI-1 -92-1 4
Qualification of NDE Personnel certification date .................................................. XI-1 -86-73 certification examinations ........................................... XI-1-86-56
(n) Cumulative index . interpretations Vols . 12-45
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Subject Interpretation
Qualification of NDE Personnel (Cont'd) XI-1 -86-66 XI-1 -86-73 Xi-1 -89-06
certified to a later edition of SNT-TC-1 A ............................... XI-1 -83-1 8 XI-1 -83-24 XI-1-86-40
certified to an earlier edition of SNT-TC-1A ............................ XI-1-83-24 certified to SNT-TC-1 A .............................................. XI-1 -83-1 8
XI-1 -83-23 XI-1 -83-29 Xi-1 -83-82 XI-1 -89-26
color vision examination - frequency ................................ XI-1 -83-36 duties of Authorized Inspector ....................................... Xi-1 -83-48 examinations scoring ............................................... Xi-1 -92-54
examinations - random selection .................................... XI-1 -95-22 XI-1 -92-70
XI-1-98-22 examinations . use of grading unit .................................. XI-1-95-23
for pumps and valves .............................................. Xi-82-06R other than to SNT-TC-1 A ........................................... Xi-1 -83-45 outside agency .................................................... Xi-1 -92-53 perform examinations to earlier editions ............................... XI-1 -86-40
performance demonstration ......................................... XI-1 -92-39 practical examination requirements . alternatives to .................... Xi-1-92-69 pressure loss, flow change and test ................................... Xi-1 -92-52 pumps and 3alves ................................................. XI-1 -92-37 qualification . SNT-TC-1 A ......................................... Xi-1 -95-61 recertification . ASNT certification .................................. XI-1 -86-66 recertification . contract employee .................................. XI-1 -95-58 recertification . examinations ....................................... XI-1 -86-1 6 recertification . examination only ................................... Xi-1 -95-68 recertification . Level 111 ........................................... Xi-1 -86-1 9 recertification . SNT-TC-1 A or CP-189 ............................... Xi-1 -95-67 supplemental training . Level 111 .................................... Xi-1-95-08
XI-1 -92-70
XI-1 -95-40 to another code ................................................... XI-1 -83-40R ultrasonic examination technicians ................................... Xi-1-92-39
ultrasonic examination -outside agency ..................... , ........ XI-1-95-31 used to perform repair examinations .................................. XI-1-83-40 visual examination . SNT-TC-1 A .................................... Xi-1 -83-1 6 visual examination . VT1, Vr2, VT3 I ................................ Xi-1 -95-38
ultrasonic examination . annual training .............................. Xi-1-92-1 1
XI-1 -98-24
Quality Assurance Program Owners's final safety analysis report .................................. Xi-1-95-46 qualification of plant and contractor personnel ......................... XI-82-06R review of ........................................................ XI-1 -86-64 updating to a later Construction Code ................................. XI-1 -86-44
XI-1 -86-44R
Records and Reports certificate of compliance and CMTR .................................. Xi-1 -83-21 R Code Data Report ................................................. XI-1 -83-21 R design documents ................................................. XI-1 -89-34 documentation - construction code .................................. XI-1-89-20
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Subject Interpretation Records and Reports (Conrd) documentation . inservice degradation ............................... XI-1 -89-641 documentation . installation of replacement ........................... XI-1-95-02 documentation . test temperature ................................... XI-1 -95-07 for pressure retaining bolting ........................................ XI-1 -89-22 inservice inspection plan . requirements .............................. XI-1 -92-02 manufacturer's data report . NIS-2 .................................. XI-1 -92-07 NIS forms . signature ............................................. XI-1 -83-65
nonwelded replacement ............................................ XI-1-86-14R Owners data form ................................................. XI-1 -83-02 replacements ..................................................... XI-1 -86-68 retention of eddy current data storage units ............................ XI-1-98-04 retention of radiographs ............................................ XI-1 -89-48 use of NIS-1 Form ................................................. XI-1-83-47
XI-1 -83-79
XI-1 -86-1 4R XI-1 -86-31
use of NIS-2 Form ................................................. XI-1 -86-31
weld reference system .............................................. XI-1 -92-06 XI-1 -86-68
Repair/Replacement Program activities . off site ................................................ XI-1 -95-09 applies to ........................................................ XI-1 -86-36
Stamping installation of replacement parts ..................................... XI-1-83-02 of replacement parts - ordered as spares .............................. XI-1 -83-21 R of replacement parts . valves ....................................... XI-1 -83-20
(P) Cumulative Index . Interpretations Vols . 12-45
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System Pressure Test (also see Hydrostatic Testing) after a repair or replacement ........................................ XI-1 -83-05 after a repair or replacement ........................................ XI-1-95-52 alternate pressure test requirement .................................... XI-1-98-01
exempted from-open-ended portions of Class 2 and 3 .................. XI-1 -98-1 3 replacement ...................................................... XI-1 -95-47 that does not involve replacement items ............................... XI-1 -98-51
applies to ........................................................ XI-1 -83-34
determining test pressure ........................................... XI-1-95-54 exempted from - NPS 1 and smaller ................................. XI-1-83-35R leak test - core criticality .......................................... XI-1-86-53 open ended portions of systems ...................................... XI-1 -89-30 pressurizing medium ............................................... XI-1-83-25
reduction of pressure - visual examination ............................ XI-1 -86-46 replacement of bolts, studs. and nuts .................................. XI-1 -89-08
replacement of bolts. studs. and nuts .................................. XI-1-98-03 required ......................................................... XI-1-95-50 systems not required to operate ...................................... XI-1-92-62 through-wall leakage ............................................... XI-1-89-64
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Use of Code Cases N.98 ............................................................ XI-1-89-09 N-308 ........................................................... XI-1-83-02
Valve Class 2 and 3-exemption from examination ........................... XI-1 -98-1 2 classification ..................................................... XI-1-83-59R
XI-1-83-62 XI-1 -92-1 3
disc and seat - hard facing ......................................... XI-1-92-35R examination - bolts and studs ...................................... XI-1 -83-76 exercising test .................................................... XI-1 -89-1 0 full stroke exercising. .............................................. XI-1 -92-50 inservice testing program - corrective action .......................... XI-1 -86-60
inservice testing - scope of ......................................... XI-1-89-71
limiting values of stroke time ........................................ XI-1-83-1 7 measured leakage rate ............................................. XI-1-83-60
(r) Cumulative Index . Interpretations Vols . 12-45
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Subject Interpretation Visual Examinations components exempt . volumetric and surface . . . . . . . I . . . . . . . . . . I . . . . . . XI-1-92-40 core support structure .............................................. XI-1-92-46 exempt from ..................................................... XI-1 -89-53 leakage ..................................................... I . . . . XI-1 -92-1 9
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Subject Interpretation Weld accessible . preservice examination ................................. Xi-1 -86-24 additional examinations - similar components ......................... Xi-1 -92-61 alternate rules for the selection and examination ........................ Xi-1-98-02 between different P-numbers ........................................ Xi-1 -83-39 connecting NPS 1 and less - hydrostatic test .......................... Xi-1 -86-35 examination-austenitic welds ...................................... XI-1 -98-1 8
examination - dissimilar metal welds ................................ Xi-1-92-13 examination - full penetration ...................................... XI-1-89-43 examination of integrally welded attachments .......................... Xi-1-92-05 examination of pipe ............................................... XI-1-83-80
(t) Cumulative Index . Interpretations Vols . 12-45
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Special Notice to the 1998 Edition of Section XI
The items listed below were inadvertently omitted from the 1998 Edition and 1999 Addenda. These items will appear on the appropriate replacement pages, with the 2000 Addenda to Section XI. The first two items apply to the 1998 Edition. The remaining items apply to the 1999 Addenda.
Page Location Change
37,38 IWA-4150
196
41
"Flaw" to be replaced with "defect" in the first and second line of IWA- 4150(c)(3)(a) and in the first and sec- ond line of IWA-4150(c)(3)(b)
Table IWC-3510-1 Note 4 to read: Y = (S / t ) / (a / t ) = S/a. If Y S 0.4, the flaw is classified as a surface flaw. If Y > 1.0, use Y = 1.0.
IWA-4300 IWA-4340 to be added as follows: IWA-4340 MITIGATION OF DEFECTS
BY MODIFICATION Modification of items may be performed
to contain or isolate a defective area without removal of the defect, pro- vided the following requirements are met.
(a) The defect shall be characterized us- ing nondestructive examination and evaluated to determine its cause and projected growth.
(b) The modification shall provide for the structural integrity of the item such that it no longer relies on the defective area, including projected growth. The modification shall meet the Construction Code and Owner's Requirements for the item in accord- ance with IWA-4220.
(c) In lieu of reexamination of the defec- tive area in accordance with IWA- 4530(a), the Owner shall prepare a plan for additional examinations to detect propagation of the flaw be- yond the limits of the modification, and when practicable, to validate the
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Page
41
43
Location
IWA-4300
I WA-445 1
77 IWA-5400 462 G-2 1 1 O(a)
466-467 G-22 1 5
500 Figure J-1000-1
Change
projected growth. The frequency and method of examination shall be deter- mined by the Owner.
IWA-4451 (b) and (c) to be replaced with
(b) Helix-coil threaded inserts shall be purchased in accordance with the Owner's or repairheplacement orga- nization's Quality Assurance Pro- gram meeting the requirements of
(c) Helix-coil threaded inserts shall be supplied with a Certified Material Test Report that provides traceability to the item, material specification, chemical composition, grade or class, mechanical properties, and heat-treated condition prior to final forming.
the following:
I WA-4 1 42.
To be deleted Formula to read: K,c = 33.2 + 20.734 exp[0.02(T-RTNDT)I Last sentence in last paragraph to read
"LTOP systems shall limit the maxi- mum pressure in the vessel to 100% of the pressure determined to satisfy Eq. (I)."
To be replaced with Figure on next page
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- AFFECT AN EXCLUDED DOES ACTIVITY
ITEM IDENTIFIED IN IWA-41207
NO YES DOES ACTIVITY AFFECT
SUWORTWITHINTHE AN ITEM OR ITS
b CLASSIFICATION AND BOUNDARIES OF JURISDICTION.
IWA-13207
NO
V AFFECTTHE PRESSURE
DOES ACTIVITY
RETAINING PORTION OFAN ITEM';
OR ATTACHMENT TO AN ITEM" OR ITS
SUPPORT?
ITEMS INTHIS CATEGORYARE NOT
WITHINTHE SCOPE OF SECTION XI
.(ARTICLE J-4000)
- YES
V ITEMS AND
ACTIVITIES INTHIS
DOES ACTIVITY
CHANGE OR INSTALLATION OF AN
ITEM* OR ITS SUPPORT
ATTACHMENT OR (ARTICLE 5-2000)
PRESSURE RETAINING
OR SUPPORT ITEM, OR
WELDING-/BRAZING ON PRESSURE RETAINING
PORTION OF ATTACHMENTIITEM' OR
ITS SUPPORT?
YES CATEGORY ARE b INCLUDED IN
REQUIRE DESIGN REPAIRfREPIACEMENT ACTIVITIES
A
NO
NO YES
IS MATERIAL REQUIRED TO BE REMOVED FROM PRESSURE RETAINING
ATTACHMENT/ITEM*, ITS SUPPORTS OR
ATTACHMENTWELDSTO ENCROACHMEM ON PRESSURE RETAINING
ITEMS. BY MECHANICAL OR THERMAL PROCESSES?
DOES MATERIAL REMOVAL ACTIVrrY
YES INVOLVE DEFECT REMOVAL OR
REQUIREDWALL THICKNESS?
b
I NO
$. NO
AFFECTA SECTION XI DOESTHE ACTIVITY
REQUIREDTEST OR EXAMINATION RESULT
RECORDEDFORTHE
ISTO BE PERFORMED? PROPOSEDACTIVITY
YES t b - ITEM ON WHICHTHE
YES
CATEGORY ARE NOTWITHIN
XI EVENTHOUGHTHE ITEM
PERFORMED ISWITHINTHE ON WHICHTHE ACTIVITY IS
THE SCOPE OF SECTION
4
ACTIVITIES INTHIS ACTIVITIES INTHIS CATEGORY ARE CONSIDERED MAINTENANCE. BUT SINCE THE PROPOSED ACTIVITY
AFFECTS A SECTION XI REQUIREDTEST OR
NO
SECTION XI BOUNDARY TESTS OR EXAMINATIONS ARE [PARAGRAPH J 4 0 0 (b)]. EXAMINATION RECORD, NEW
REQUIRED IN ACCORDANCE WITH SECTION XI, (ARTICLE
5-30001. ALSO INCLUDESTHOSE NONSTRUCTURAL PUMP ANDVALVE INTERNALS CONSTRUCTEDTO CONSTRUCTION CODES OR CODE CASES AND WHICH ARE WITHINTHE SECTION XI BOUNDARY
FIG. J-1000-1 DECISION TREE
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