|
|
Line 1: |
Line 1: |
| #REDIRECT [[ULNRC-05434, Callaway Plant Unit 1, 10 CFR 50.55a Request: Proposed Alternative to ASME Section Xi Requirements for Replacement of Class 3 Buried Piping]] | | {{Adams |
| | | number = ML072550488 |
| | | issue date = 08/30/2007 |
| | | title = 10 CFR 50.55a Request: Proposed Alternative to ASME Section Xi Requirements for Replacement of Class 3 Buried Piping |
| | | author name = Graessle L H |
| | | author affiliation = Ameren Corp, AmerenUE |
| | | addressee name = |
| | | addressee affiliation = NRC/Document Control Desk, NRC/NRR |
| | | docket = 05000483 |
| | | license number = |
| | | contact person = |
| | | case reference number = ULNRC-05434 |
| | | document type = Code Relief or Alternative, Letter |
| | | page count = 9 |
| | }} |
| | |
| | =Text= |
| | {{#Wiki_filter:AmerenUE P0 Box 620 Callaway Plant Fulton, MO 65251 August 30, 2007 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Stop P1-137 Washington, DC 20555-0001 ULNRC-05434 WAi Ladies and Gentlemen: |
| | U/E DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 UNION ELECTRIC CO.10CFR50.55a REQUEST: PROPOSED ALTERNATIVE TO ASME SECTION XI REQUIREMENTS FOR REPLACEMENT OF CLASS 3 BURIED PIPING Pursuant to 1OCFR50.55a(a)(3)(i), Union Electric Company (AmerenUE) hereby requests NRC approval of attached Relief Request 13R-10 regarding paragraph IWA-4221(b) of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section XI. The Code Edition applicable to the current 10-year Inservice Inspection interval for Callaway Plant is the 1998 Edition (up to and including the 2000 Addenda).The requested relief is needed to support planned replacement of buried steel piping in Callaway's essential service water (ESW) system with polyethylene (PE) piping.For this repair/replacement activity, IWA-4221 (b) would require the new/replacement piping to meet the original Construction Code requirements for the ESW piping. The applicable Construction Code (ASME Section III), however, does not provide rules for the design, fabrication, installation, examination and testing of PE piping. ASME Code Case N-755, however, provides conditions under which PE material may be used for ASME Section III, Class 3 buried piping systems. AmerenUE therefore requests relief from the noted Code requirements in order to utilize the provision of Code Case N-755 with the exceptions identified in the attached relief request.Replacement of the current ESW steel piping with PE piping would provide an overall benefit to plant safety since PE piping is much more resistant to fouling and microbiologically induced corrosion, thus assuring improved long-term reliability ofrcs "7 the risk-significant ESW system.(a subsidiary of Ameren Corporation ULNRC-05434 August 30, 2007 Page 2 To provide sufficient time for planning of the ESW piping replacement and provide assurance of the planned approach, AmerenULE respectfully requests NRC review and approval of the attached relief request by May 31, 2008.It may be noted that no new regulatory commitments have been made or identified in this letter or its attachment. |
| | Please contact Scott A. Maglio at 573-676-8719 for any questions you may have regarding this relief request.Sincerely, L. H. Graessle Manager, Regulatory Affairs LHG/TBE/slk Attachment ULNRC-05434 August 30, 2007 Page 3 cc: Mr. Bruce S. Mallett Regional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-4005 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077 Mr. Jack N. Donohew (2 copies)Licensing Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop O-7D1 Washington, DC 20555-2738 Missouri Public Service Commission Governor Office Building 200 Madison Street PO Box 360 Jefferson City, MO 65102-0360 ULNRC-05434 August 30, 2007 Page 4 Index and send hardcopy to QA File A160.0761 Hardcopy: Certrec Corporation 4200 South Hulen, Suite 422 Fort Worth, TX 76109 (Certrec receives ALL attachments as long as they are non-safeguards and may be publicly disclosed). |
| | Electronic distribution: |
| | C. D. Naslund A. C. Heflin T. E. Herrmann L. H. Graessle G. A. Hughes S. A. Maglio S. L. Abel D. M. Stepanovic M. D. Brandes S. L. Gallagher L. M. Belsky (NSRB)T. B. Elwood Ms. Diane M. Hooper Supervisor, Licensing WCNOC P.O. Box 411 Burlington, KS 66839 Mr. Scott Bauer Regulatory Affairs Palo Verde NGS P.O. Box 52034, Mail Station 7636 Phoenix, AZ 85072-2034 Mr. Scott Head Supervisor, Licensing South Texas Project NOC Mail Code N5014 P.O. Box 289 Wadsworth, TX 77483 Mr. Dennis Buschbaum TXU Power Comanche Peak SES P.O. Box 1002 Glen Rose, TX 76043 Mr. Stan Ketelsen Manager, Regulatory Services Pacific Gas & Electric Mail Stop 104/5/536 P.O. Box 56 Avila Beach, CA 93424 Mr. John O'Neill Pillsbury Winthrop Shaw Pittman LLP 2300 N. Street N.W.Washington, DC 20037 Attachment to ULNRC-05434 August 30, 2007 AmerenUE Callaway Nuclear Plant 10 CFR 50.55a Request Number 13R-10 Proposed Alternative to ASME Section XI Requirements for Replacement of Class 3 Buried Piping in Accordance with 10 CFR 50.55a(a)(3)(i) |
| | AmerenUE 10 CFR 50.55a Request Number 13R-10 Page 2 of 5 Description of Proposed Alternative ASME Code Case N-755 provides the requirements for the design, fabrication, installation, examination and testing of polyethylene material for use in ASME Section III, Division 1, Class 3 buried piping systems.Specific sections of ASME Code Case N-755 that provide requirements for key aspects of the piping replacement, along with identification of any exceptions to the Code Case, are, identified below.Procurement The procurement of the polyethylene piping shall be in accordance with Sections -1200 and -2000 of ASME Code Case N-755.Material The polyethylene piping material shall be in accordance with Section-2000 of ASME Code Case N-755, with the following exceptions: |
| | * Section -2000 references Supplement 2 of the Code Case for acceptable polyethylene material standards. |
| | In lieu of the revisions identified in Supplement 2, the latest revisions of the material standards may be utilized and will be reconciled as necessary." In lieu of PE material with a cell classification of 445474C specified in Section -2110 of the Code Case, PE material with a cell classification of 445574C will be utilized. |
| | The 445574C PE material has a higher tensile strength than the 445474C PE material." Section -3001 of the Code Case specifies that all mitered elbows will be three or five-joint mitered elbows. In addition to 90-degree mitered elbows, 45-degree and 22.5-degree mitered elbows may be utilized. |
| | Mitered elbows of less than 90 degrees may have less than three joints.* Damage to polyethylene piping under scope of this relief request will be addressed by: (1) Either cutting out and replacing the damaged section of pipe or (2) Removing scratches or damage by blending and then verifying that the remaining material thickness meets all design requirements. |
| | Any piping section with any damage exceeding 10% of the nominal wall thickness shall be cut out and replaced.The requirements of this provision are consistent with requirements of ASME B&PV Code paragraph ND-2558 for metallic materials and will be as follows: (1) Surface defects shall be removed by grinding or machining in accordance with the following requirements: |
| | AmerenUE 10 CFR 50.55a Request Number 13R-10 Page 3 of 5 (a) The depression after defect elimination is blended uniformly into the surrounding surface with a maximum taper not to exceed 3:1 (ratio of width to height).(b) After defect elimination, the area will be examined by visual examination to ensure that the defect has been removed.(c) If the elimination of the defect reduces the thickness of the section below the minimum required design thickness, the section of piping containing the defect shall be cut out and replaced.Design The design of the polyethylene piping shall be in accordance with Section -3000 of ASME Code Case N-755 with the exception of the design pressure and temperature limitations of 150 psig at 140'F identified in Section -1100. The design pressures and temperatures of the various lines to be replaced will be 165 psig at 95°F, 160 psig at 95°F, or 45 psig at 180'F, as applicable to the specific line. For design temperatures less than or equal to 140 0 F, allowable stress values and moduli of elasticity will be in accordance with Tables 3021-1, 3031-3 and 3035-3 of the Code Case. Design pressures greater than 150 psig will be justified by analysis using the design provisions of ASME Code Case N-755. For design temperatures greater than 140'F, allowable stress values and moduli of elasticity will be determined through material testing.It should be noted that the design temperature of 180'F is selected to bound the peak post-LOCA discharge line operating temperature. |
| | The peak post-LOCA temperature will be short-lived. |
| | The long-term post-LOCA discharge temperature, as well as the discharge temperature during normal operation and normal shutdown, will be significantly lower than the 140'F Code Case temperature limitation. |
| | This piping is not isolable and is an open ended return line discharging to the UHS Cooling Tower basin via the tower spray headers or the spray header bypass.Fabrication and Installation The fabrication and installation of the polyethylene piping will be in accordance with Section -4000 of ASME Code Case N-755. |
| | AmerenUlE 10 CFR 50.55a Request Number 13R-10 Page 4 of 5 Examination The examination of the polyethylene piping will be in accordance with Section -5000 of ASME Code Case N-755.Pressure Testing The testing of the polyethylene piping will be in accordance with Section -6000 of ASME Code Case N-755.Basis for Use of Proposed Alternative The Callaway ESW system was originally designed with unlined carbon steel piping. Plant specific and industry operating experience has shown that carbon steel piping is susceptible to fouling, corrosion, and microbiologically induced corrosion (MIC) for raw water applications. |
| | The use of corrosion resistant steel piping provides added resistance to these problems, but does not eliminate susceptibility. |
| | Alternatively, the use of internal linings or coatings in carbon steel piping provides resistance to these problems.However, degradation of and/or damage to the linings and coatings can cause exposure of the carbon steel piping to the raw water, resulting in piping degradation. |
| | Additionally, the linings and coatings can pose a potential foreign material concern if they are released from the piping wall as a result of the degradation or damage.Polyethylene piping pipe will not rust, rot, pit, corrode, tuberculate or support biological growth. The use of polyethylene piping in raw water applications will thus ensure long term reliability from a structural integrity and flow standpoint. |
| | Callaway has recently installed approximately 600 linear feet of 36-inch diameter buried polyethylene piping in a non-safety related blowdown application and has not experienced any significant problems. |
| | On a larger scale, Duke Power Company has installed 20,000 linear feet of polyethylene piping at Catawba Nuclear Station in non-safety related raw water applications. |
| | Since the installations began in 1998, Duke Power Company has reported that the material has had an excellent service history and has not experienced fouling or corrosion. |
| | The use of polyethylene piping in accordance with ASME Code Case N-755, with exceptions as noted in Section 5 of this request, will result in improved system performance and enhanced system reliability, and will provide an acceptable level of quality and safety. |
| | AmerenUE 10 CFR 50.55a Request Number 13R-10 Page 5 of 5 6. Duration of Proposed Alternative The use of the proposed alternative is requested for the third ten-year inservice inspection interval for Callaway, during which the ASME Boiler and Pressure Vessel Code, Section XI, 1998 Edition with the 2000 Addenda is used for repair/replacement activities. |
| | The Callaway third ten-year inservice inspection interval is currently scheduled to end on December 18, 2014.7. References ASME Code Case N-755, "Use of Polyethylene (PE) Plastic Pipe for Section III, Division 1, Construction and Section XI Repair/Replacement Activities," as approved by BPV Standards Committee 02/02/2007. |
| | Regulatory Guide 1.84, Revision 33, "Design, Fabrication, and Materials Code Case Acceptability, ASME Section III." Regulatory Guide 1.147, Revision 14, "Inservice Inspection Code Case Acceptability, ASME Section XI, Division 1." The Plastics Pipe Institute, Inc. "Handbook of Polyethylene Pipe"}} |
Letter Sequence Request |
---|
TAC:MD6792, Addition of New Tech Spec on RCS Boron Limits and Revisions to Tech Spec 3.3.1 to Address Rwfs (Open) TAC:MD7252, Eliminate Second Completion Times Limiting Time from Discovery of Failure to Meet an LCO (Approved, Closed) |
|
MONTHYEARML0703900572007-02-21021 February 2007 BVPS Doc Table M Project stage: Other ML0725504882007-08-30030 August 2007 10 CFR 50.55a Request: Proposed Alternative to ASME Section Xi Requirements for Replacement of Class 3 Buried Piping Project stage: Request ULNRC-05445, One-Time Completion Time Extension for Essential Service Water (ESW) System2007-10-31031 October 2007 One-Time Completion Time Extension for Essential Service Water (ESW) System Project stage: Request ML0800400232008-01-0808 January 2008 Forthcoming Meeting with Union Electric Company on the Callaway Plant Relief and Amendment Requests Dated August 3 and October 31, 2007. (Tac No. MD6792 and MD7252) Project stage: Meeting ML0802504052008-01-23023 January 2008 Licensee Handout for Meeting with Union Electric Company on the Callaway Plant Relief Request I3R-10 to Use Plastic Pipe in the Safety-Related Essential Service Water (ESW) System Project stage: Meeting ML0803802882008-02-0707 February 2008 Preliminary Request for Additional Information Project stage: RAI ULNRC-05476, One-Time Completion Time Extension for Essential Service Water (ESW) System2008-02-21021 February 2008 One-Time Completion Time Extension for Essential Service Water (ESW) System Project stage: Other ML0803806472008-02-29029 February 2008 Summary of Meeting with Union Electric Company Callaway Plant, Unit 1, 8/30/2007 Relief Request and 10/31/2007 License Amendment Request Applications Related to Replacement of Essential Service Water Piping (Tac No. MD6792 and MD7252) Project stage: Meeting ULNRC-05482, Response to Questions Received on February 7, 2008 Regarding Amendment to Revise Technical Specifications for Essential Service Water2008-03-0707 March 2008 Response to Questions Received on February 7, 2008 Regarding Amendment to Revise Technical Specifications for Essential Service Water Project stage: Other ML0808800122008-03-31031 March 2008 Request for Additional Information Related to LAR to Revise TS 3.7.8, Essential Service Water System, and TS 3.8.1, AC Sources - Operating, for One-time Completion Time Extension Re Underground Piping Project stage: RAI ULNRC-05434, CFR50.55a Request: Proposed Alternative to ASME Section X1 Requirements for Replacement of Class 3 Buried Piping2008-04-17017 April 2008 CFR50.55a Request: Proposed Alternative to ASME Section X1 Requirements for Replacement of Class 3 Buried Piping Project stage: Request ULNRC-05500, Response to Request for Additional Information One-Time Completion Time Extension for Essential Service Water (ESW) System2008-05-0606 May 2008 Response to Request for Additional Information One-Time Completion Time Extension for Essential Service Water (ESW) System Project stage: Response to RAI ML0815800112008-06-10010 June 2008 Request for Additional Information, Relief Request No. 13R-10 and License Amendment Request to Revise TS 3.7.8, Essential Service Water System, and TS 3.8.1, AC Sources - Operating, for One-time CT Extension Underground Piping Project stage: RAI ML0817506442008-06-24024 June 2008 Forthcoming Meeting with Union Electric Company on the Callaway Plant to Discuss the Licensee'S Responses to NRC Request for Additional Information Relief and License Amendment Requests Project stage: RAI ULNRC-05517, CFR50.55a Request: Proposed Alternative to ASME Section XI Requirements for Replacement of Class 3 Buried Piping2008-07-10010 July 2008 CFR50.55a Request: Proposed Alternative to ASME Section XI Requirements for Replacement of Class 3 Buried Piping Project stage: Request ULNRC-05520, One-Time Completion Time Extension for Essential Service Water (ESW) System, (OL1281)2008-07-10010 July 2008 One-Time Completion Time Extension for Essential Service Water (ESW) System, (OL1281) Project stage: Other ULNRC-05529, CFR50.55a Request: Proposed Alternative to ASME Section XI Requirements for Replacement of Class 3 Buried Piping2008-07-24024 July 2008 CFR50.55a Request: Proposed Alternative to ASME Section XI Requirements for Replacement of Class 3 Buried Piping Project stage: Request ULNRC-05534, One-Time Completion Time Extension for Essential Service Water (ESW) System2008-08-13013 August 2008 One-Time Completion Time Extension for Essential Service Water (ESW) System Project stage: Other ML0826307992008-09-0505 September 2008 Calculation 2007-13241, Rev. 1, Minimum Wall Thickness for ESW Buried Hdpe Piping. Project stage: Other ML0826308002008-09-12012 September 2008 Calculation 2007-16760, Rev. 0, Buried Hdpe Piping Stress Analysis. Project stage: Other ULNRC-05542, Transmittal of Callaway, Unit 1, Additional Information Regarding 10CFR50.55a Request: Proposed Alternative to ASME Section XI Requirements for Replacement of Class 3 Buried Piping2008-09-15015 September 2008 Transmittal of Callaway, Unit 1, Additional Information Regarding 10CFR50.55a Request: Proposed Alternative to ASME Section XI Requirements for Replacement of Class 3 Buried Piping Project stage: Request ULNRC-05553, Follow-up Information Regarding 10CFR50.55a Request: Proposed Alternative to ASME Section XI Requirements for Replacement of Class 3 Buried Piping (TAC No. MD67920)2008-10-0909 October 2008 Follow-up Information Regarding 10CFR50.55a Request: Proposed Alternative to ASME Section XI Requirements for Replacement of Class 3 Buried Piping (TAC No. MD67920) Project stage: Request ML0828106432008-10-31031 October 2008 Issuance of Amendment No. 186, Revise TS 3.7.8, Essential Service Water System, and TS 3.8.1, AC Sources - Operating, for One-time Completion Time Extension Re Underground Piping Project stage: Approval ML0826400072008-10-31031 October 2008 Relief Request I3R-10 for Use of Polyethylene Pipe in Lieu of Carbon Steel Pipe in Buried Essential Service Water Piping System Project stage: Acceptance Review ML0831001342008-11-0606 November 2008 Correction to Amendment No. 186 Approving One-Time Extension of Completion Time for Inoperable Essential Service Water System and Emergency Diesel Generators Project stage: Other ML0831002882008-11-0707 November 2008 Relief Request 13R-10 Approved on October 31, 2008, for Third 10-Year Inservice Inspection Interval for Use of Polyethylene Pipe in Lieu of Carbon Steel Pipe in Buried Essential Service Water Piping System Project stage: Acceptance Review ULNRC-05563, One-Time Completion Time Extension for Essential Service Water System2008-12-0101 December 2008 One-Time Completion Time Extension for Essential Service Water System Project stage: Other ML0834503272008-12-19019 December 2008 Summary of Meeting with Representatives of Union Electric Company, Licensee for Callaway Plant, Unit 1 Second Round of Requests for Information, Extension of Completion Time for Essential Service Water Systems (TAC Nos. MD6792 & MD7252) Project stage: Meeting ULNRC-06115, CFR 50.55a Request: Proposed Alternative to ASME Section XI Alternative Technical Requirements for Class 3 Buried Piping2014-06-10010 June 2014 CFR 50.55a Request: Proposed Alternative to ASME Section XI Alternative Technical Requirements for Class 3 Buried Piping Project stage: Request 2008-02-07
[Table View] |
|
---|
Category:Code Relief or Alternative
MONTHYEARML24052A3662024-02-26026 February 2024 Regulatory Audit Plan in Support of Proposed Alternative to ASME Code, Section XI Requirements for Containment Building Inspections ML20225A2922020-08-12012 August 2020 Request to Use a Portion of a Later Edition of the ASME B&PV Code, Section XI ML19079A1482019-04-0101 April 2019 Request for Alternative I4R-05 to Reactor Vessel Nozzle Weld Examination Frequency Requirements (EPID L-2018-LLR-0051 ML18313A0692018-11-26026 November 2018 Request for Relief I4R-01 Related to the Inservice Inspection Program for Class 3 Buried High Density Polyethylene Piping ULNRC-06420, Request 14R-05 for Relief from Requirements of ASME Code Case N-770-2 Regarding Inspection Intervals for Reactor Vessel Nozzle Dissimilar Metal Welds2018-04-0909 April 2018 Request 14R-05 for Relief from Requirements of ASME Code Case N-770-2 Regarding Inspection Intervals for Reactor Vessel Nozzle Dissimilar Metal Welds ML17262A7002017-10-0303 October 2017 Request for Alternative I4R-04 Applicable to the Fourth 10-Year Inspection Program Interval ML17254A1202017-09-25025 September 2017 Request for Alternative No. PR-07 from the Requirements of the ASME Code for the Fourth 10-Year Inservice Testing Interval ML17058A4432017-03-0606 March 2017 Request for Alternative I4R-03 Applicable to the Fourth 10-Year Inservice Inspection Program Interval ML16223A7122016-08-30030 August 2016 Relief Request No. 13R-08 from Code Case N-460, Alternative Examination Coverage for Class 1 and Class 2 Welds, for Piping Welds, Third 10-Year Inservice Inspection Interval ML16055A4642016-03-17017 March 2016 Relief Requests 13R-09 (Steam Generator Tubesheet Weld), 13R-11 (Pressurizer Welds) from Code Case N-460 and 13R-18 (SG Weld), from Appendix Viii Requirements, Third 10-Year Inservice Inspection Interval (CAC MF6735-MF6737) ML16027A1582016-01-29029 January 2016 Relief Request I4R-02 from Requirements of ASME Code Section XI, Table IWF-2500-1 for 100% Visual Examination of Class 1 Supports, Fourth 10-Year Inservice Inspection Interval ML15064A1252015-05-12012 May 2015 Request for Relief I4R-01 from ASME Code Requirements for Replacement of Class 3 Essential Service Water Buried Piping with High Density Polyethylene Piping, for the Fourth 10-year Inservice Testing Interval ML15035A1482015-02-10010 February 2015 Relief Request 13R-17, Proposed Alternative to ASME Code, Section XI Requirements, Which Extends Reactor Vessel Inservice Inspection Frequency from 10 to 20 Years, Third 10-Year Interval ML14239A0972014-09-0404 September 2014 Request for Relief I3R-15, ASME Code Class 1 Pressure-Retaining Piping/Components Leakage Testing at Full Pressure, Third 10-Year Inservice Inspection Interval ML14234A4512014-09-0404 September 2014 Relief Request I3R-16, Temporary Non-Code Repair of the Train a Component Cooling Water Heat Exchanger to Control ESW Leakage, Third 10-Year Inservice Inspection Interval ML14178A7692014-07-15015 July 2014 Requests for Relief PR-01, PR-02, PR-03, PR-04, and PR-06 (PR-05 Withdrawn), ASME OM Code Cases for Group a and B Pumps for Fourth 10-Year Inservice Testing Interval ML14027A0572014-01-29029 January 2014 Relief Request PR-07, Testing Frequency for Pumps and Valves, Third 10-year Inservice Testing Interval ML13246A3042013-08-30030 August 2013 Verbal Authorization Email, Relief Request PR-07, Testing Frequency for Pumps and Valves, Third 10-year Inservice Testing Interval ML13126A3202013-05-0707 May 2013 Summary of Telephone Conference, Verbal Authorization of Relief Request I3R-14. Proposed Alternative to ASME Code Requirements for Leakage Testing of RPV Head Flange Leakoff Lines, Third 10-Year ISI Interval. ML12258A0452012-09-18018 September 2012 Relief Request VR-01 from Requirements of ASME OM Code, Mandatory Appendix I, One-time Extension for 5-Year Replacement Interval, from 4/11/12 to 6/2013, Main Steam Isolation Valve Actuator Rupture Disks ML1211502472012-05-0303 May 2012 Memo to File, Verbal Authorization, Relief Request VR-01 from Requirements of ASME OM Code Mandatory Appendix I, One-time Extension Replacement of Main Steam Isolation Valve Actuator Rupture Disks ML1201907482012-02-16016 February 2012 Relief Request 13R-13, Alternative to ASME Code Section XI Requirements for Performance of Second Successive Exam of C Cold Leg Safe-End to Elbow Weld, Third 10-Year Inservice Inspection ML0831002882008-11-0707 November 2008 Relief Request 13R-10 Approved on October 31, 2008, for Third 10-Year Inservice Inspection Interval for Use of Polyethylene Pipe in Lieu of Carbon Steel Pipe in Buried Essential Service Water Piping System ML0818406062008-07-0303 July 2008 Approval of Second Extension Request for Corrective Actions GL 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors. ML0731114422007-12-10010 December 2007 Correction to Authorization of Relief Request ISI-39 for the Second 10-Year Inservice Inspection Interval ML0729803972007-10-30030 October 2007 Relief Request ISI-38, Reactor Pressure Vessel Inlet Safe-End to-Elbow Welds Proposed Alternative Examination for Second 10-Year Inservice Inspection Interval ML0724000922007-09-17017 September 2007 Issuance of Relief Requests (Rrs) ISI-36, ISI-37, and ISI-38 for Second Year Inservice Inspection (ISI) Interval ML0725504882007-08-30030 August 2007 10 CFR 50.55a Request: Proposed Alternative to ASME Section Xi Requirements for Replacement of Class 3 Buried Piping ML0715203292007-07-10010 July 2007 Request for Alternatives for Application of Structural Weld Overlays to Pressurizer Dissimilar Metal Nozzle Welds for Third 10-Year Inservice Inspection Program Interval ML0705803332007-03-15015 March 2007 Authorization of Relief Request No. ISI-33 for Second 10-Year and Third 10-Year ISI Interval ML0635203182007-01-18018 January 2007 Request for Relief No. ISI-35 for Second 10-year Inservice Inspection Interval ML0700303362007-01-18018 January 2007 Relief Request ISI-41 for the Second 10-year Inservice Inspection Interval ML0630604782006-12-0707 December 2006 Relief Request 13R-04 for the Third 10-Year Interval Inservice Inspection ML0629302822006-11-17017 November 2006 Relief Requests I3R-05 and I3R-06 for the Third Inservice Inspection Interval ULNRC-05183, Requests for Relief from ASME Section XI Code Inservice Examination Requirements2006-10-25025 October 2006 Requests for Relief from ASME Section XI Code Inservice Examination Requirements ML0614301312006-06-15015 June 2006 Relief, Third 10-Year Interval Inservice Inspection Program Relief Request I3R-02 ML0520802152005-08-18018 August 2005 Relief, Use a Subsequent Edition of ASME Code Examinations for the Third Inservice Inspection Interval ML0515302072005-06-22022 June 2005 6/22/05 Callaway, Unit 1 - Relief Requests ISI-24,ISI-25 and ISI-26 of the Second 10-Year Inservice Inspection (ISI) Interval (Tacs. MC4435 and MC4436) ML0507601292005-05-19019 May 2005 Relief, Request for Relief from Certain ASME Code Examinations for the Second Inservice Inspection Interval ULNRC-05092, Revision to Approve Request for Relief from ASME Section III Requirements Regarding Non-destructive Examination of Welds Performed Under Site Repair/Replacement Program2004-11-18018 November 2004 Revision to Approve Request for Relief from ASME Section III Requirements Regarding Non-destructive Examination of Welds Performed Under Site Repair/Replacement Program ULNRC-05049, Union Electric Company Callaway Plant Request for Relief from ASME Section XI Code Inservice Examination Requirements2004-09-0303 September 2004 Union Electric Company Callaway Plant Request for Relief from ASME Section XI Code Inservice Examination Requirements ML0414100712004-05-19019 May 2004 Relief, ASME Code Requirements on the Use of Weld Overlay Reinforcement to Restore Wall Thickness of ASME Class 2 Carbon Steel Main Feedwater Piping. ML0414100352004-05-19019 May 2004 Relief, Second Ten-Year Interval Inservice Inspection Program Relief Request to Use an Alternative Examination Method ULNRC-04993, Revision of Request for Relief from ASME Section XI Requirements in Order to Temporarily Restore Wall Thickness of ASME Class 2 Carbon Steel Main Feedwater Piping by Weld Overlay Reinforcement2004-05-0707 May 2004 Revision of Request for Relief from ASME Section XI Requirements in Order to Temporarily Restore Wall Thickness of ASME Class 2 Carbon Steel Main Feedwater Piping by Weld Overlay Reinforcement ML0409806642004-04-0707 April 2004 4/7/04 Callaway Plant - Request for Relief from ASME Code Requirements on the Use of Weld Overlay Reinforcement to Restore Wall Thickness of ASME Class 2 Carbon Steel Main Feedwater Piping ULNRC-04879, Requests for Relief Regarding Implementation of ASME Section XI Appendix VII Requirements2003-08-14014 August 2003 Requests for Relief Regarding Implementation of ASME Section XI Appendix VII Requirements ML0318305352003-07-0101 July 2003 Second Ten-Year Interval Inservice Inspection Program Relief Request to Use an Alternative Examination Method (Tac. MB6534) ML0134602652002-01-30030 January 2002 Relief, Application of Risk-Informed Inservice Inspection Program for the American Society of Mechanical Engineers Boilers and Pressure Vessel Code Class 1 and 2 TAC No MB1205) 2024-02-26
[Table view] Category:Letter
MONTHYEARIR 05000483/20253012024-08-0505 August 2024 Notification of NRC Initial Operator Licensing Examination 05000483/2025301 ML24212A2822024-08-0202 August 2024 Regulatory Audit Summary Concerning Review of Request No. C3R-01 for Proposed Alternative to ASME Code, Section XI Requirements for Containment Building Inspections IR 05000483/20240022024-07-18018 July 2024 and Independent Spent Fuel Storage Installation Integrated Inspection Report 05000483/2024002 and 07201045/2024001 ML24185A1032024-07-16016 July 2024 2024 Biennial Problem Identification and Resolution Inspection Report ULNRC-06891, Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC00052024-06-26026 June 2024 Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC0005 ULNRC-06892, Independent Spent Fuel Storage Installation Registration of Dry Spent Fuel Storage Canister HGMPC00062024-06-26026 June 2024 Independent Spent Fuel Storage Installation Registration of Dry Spent Fuel Storage Canister HGMPC0006 ULNRC-06884, Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC00022024-06-12012 June 2024 Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC0002 ULNRC-06886, Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC00042024-06-12012 June 2024 Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC0004 ULNRC-06885, Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC00032024-06-12012 June 2024 Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC0003 ML24144A0492024-06-11011 June 2024 Requests for Relief from ASME OM Code Pump and Valve Testing Requirements for Fifth 120-Month Inservice Testing Interval ML24178A1132024-06-0606 June 2024 Ameren Missouris Intent to Adopt Revision 1 to Amendment 0 of Certificate of Compliance No. 1040 as Applicable to the ISFSI at the Callaway Plant Site ML24158A5222024-06-0606 June 2024 Application to Revise Technical Specifications to Adopt Tstf-569, Rev. 2, Revise Response Time Testing Definition (LDCN 24-0008) ML24143A1632024-05-23023 May 2024 Independent Spent Fuel Storage Installation Registration of Dry Spent Storage Canister HGMPC0001 ML24137A2342024-05-16016 May 2024 Independent Spent Fuel Storage Installation - Registration of Dry Spent Fuel Storage Canister HGMPC0011 ULNRC-06882, Independent Spent Fuel Storage Installation Registration of Dry Spent Fuel Storage Canister HGMPC00122024-05-16016 May 2024 Independent Spent Fuel Storage Installation Registration of Dry Spent Fuel Storage Canister HGMPC0012 ML24122A1502024-05-0707 May 2024 Audit Plan to Support Review of Steam Generator License Renewal Response to Commitment Nos 34 and 35 IR 05000483/20244022024-05-0606 May 2024 Security Baseline Inspection Report 05000483/2024402 (Full Report) ULNRC-06877, Final Safety Analysis Report Revision OL-27 and Technical Specification Bases Revision 252024-05-0606 May 2024 Final Safety Analysis Report Revision OL-27 and Technical Specification Bases Revision 25 ULNRC-06856, CFR 50.59 and 10 CFR 72.48 Summary Report2024-05-0101 May 2024 CFR 50.59 and 10 CFR 72.48 Summary Report IR 05000483/20240112024-05-0101 May 2024 NRC Post-Approval Site Inspection for License Renewal (Phase 2) Report 05000483/2024011 ML24122A1132024-04-30030 April 2024 Submittal of Callaway, Unit 1, 2023 Annual Radioactive Effluent Release Report ULNRC-06869, Submittal of Callaway, Unit 1, 2023 Annual Radiological Environmental Operating Report2024-04-30030 April 2024 Submittal of Callaway, Unit 1, 2023 Annual Radiological Environmental Operating Report ULNRC-06876, Registration of Dry Spent Fuel Storage Canister HGMPC00102024-04-25025 April 2024 Registration of Dry Spent Fuel Storage Canister HGMPC0010 ULNRC-06866, Submittal of Cycle 26 Commitment Change Summary Report2024-04-17017 April 2024 Submittal of Cycle 26 Commitment Change Summary Report ULNRC-06871, Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC00072024-04-17017 April 2024 Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC0007 ULNRC-06872, Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC00082024-04-17017 April 2024 Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Storage Canister HGMPC0008 ML24108A1082024-04-17017 April 2024 Independent Spent Fuel Storage Installation Registration of Dry Spent Fuel Storage Canister HGMPC0009 IR 05000483/20240012024-04-16016 April 2024 Integrated Inspection Report 05000483/2024001 IR 05000483/20244042024-04-0909 April 2024 Cyber Security Inspection Report 05000483/2024404 05000483/LER-2024-001, Submittal of LER 2024-001-00 for Callaway Plant, Unit 1, Reactor Trip Due to Turbine Trip2024-04-0404 April 2024 Submittal of LER 2024-001-00 for Callaway Plant, Unit 1, Reactor Trip Due to Turbine Trip ML24088A3212024-04-0101 April 2024 Notification of Commercial Grade Dedication Inspection (05000483/2024013) and Request for Information ML24086A5132024-03-26026 March 2024 CFR 50.46 Annual Report Regarding ECCS Evaluation Model Revisions ULNRC-06863, Submittal of Annual Exposure Report for 20232024-03-20020 March 2024 Submittal of Annual Exposure Report for 2023 ML24079A1622024-03-19019 March 2024 Re Nuclear Property Insurance Reporting ML24066A1932024-03-0707 March 2024 2024 Callaway Plant Notification of Biennial Problem Identification and Resolution Inspection and Request for Information ULNRC-06852, Owners Activity Reports (OAR-1 Forms) for Cycle/Refuel 262024-03-0505 March 2024 Owners Activity Reports (OAR-1 Forms) for Cycle/Refuel 26 IR 05000483/20230062024-02-28028 February 2024 Annual Assessment Letter for Callaway Plant Report 05000483/2023006 ML24052A3662024-02-26026 February 2024 Regulatory Audit Plan in Support of Proposed Alternative to ASME Code, Section XI Requirements for Containment Building Inspections ULNRC-06858, Completion of License Renewal Activities Prior to Entering the Period of Extended Operation2024-02-21021 February 2024 Completion of License Renewal Activities Prior to Entering the Period of Extended Operation IR 05000483/20230022024-02-21021 February 2024 Amended Integrated Inspection Report 05000483/2023002 ML24036A1712024-02-20020 February 2024 Exemption from Select Requirements of 10 CFR Part 73 (EPID L-2023-LLE-0079 (Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting)) ULNRC-06853, Submittal of 2023 Fitness for Duty Performance Data Per Per 10 CFR 26.7172024-01-29029 January 2024 Submittal of 2023 Fitness for Duty Performance Data Per Per 10 CFR 26.717 IR 05000483/20230042024-01-19019 January 2024 Integrated Inspection Report 05000483/2023004 ML24008A0552024-01-19019 January 2024 Acceptance of Requested Licensing Action - Proposed Alternative to the Requirements of the ASME Code (EPID L-2023-LLR- 0061) ML23353A1712024-01-18018 January 2024 Issuance of Amendment No. 237 to Clarify Support System Requirements for the Residual Heat Removal System and Control Room Air Conditioning System Under Technical Specifications 3.4.8, 3.7.11, and 3.9.6 ML23317A0012024-01-12012 January 2024 Audit Summary Regarding LAR to Clarify Support System Requirements for the Residual Heat Removal and Control Room Air Conditioning System Under Technical Specifications 3.4.8, 3.7.11, and 3.9.6 ML23347A1212024-01-11011 January 2024 Issuance of Amendment No. 236 to Adopt TSTF-501, Revision 1, Relocate Stored Fuel Oil and Lube Volume Values to Licensee Control EPID L-2023-LLA-0046) ML24011A1492024-01-11011 January 2024 Notification of Post-Approval Site Inspection for License Renewal and Request for Information (05000483/2024011) ULNRC-06847, Supplement to Relief Request from Requirements of ASME BPV Code, Section XI, Subsection Iwl Regarding Examination and Testing of the Unbonded Post-Tensioning System (Relief Request C3R-01)2023-12-21021 December 2023 Supplement to Relief Request from Requirements of ASME BPV Code, Section XI, Subsection Iwl Regarding Examination and Testing of the Unbonded Post-Tensioning System (Relief Request C3R-01) ULNRC-06849, License Renewal Resolution for Commitments 34 and 35 Perform Evaluation of Crack Initiation and Propagation in Steam Generator Divider Plate and Tube-To-Tubesheet Welds2023-12-20020 December 2023 License Renewal Resolution for Commitments 34 and 35 Perform Evaluation of Crack Initiation and Propagation in Steam Generator Divider Plate and Tube-To-Tubesheet Welds 2024-08-05
[Table view] |
Text
AmerenUE P0 Box 620 Callaway Plant Fulton, MO 65251 August 30, 2007 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Stop P1-137 Washington, DC 20555-0001 ULNRC-05434 WAi Ladies and Gentlemen:
U/E DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 UNION ELECTRIC CO.10CFR50.55a REQUEST: PROPOSED ALTERNATIVE TO ASME SECTION XI REQUIREMENTS FOR REPLACEMENT OF CLASS 3 BURIED PIPING Pursuant to 1OCFR50.55a(a)(3)(i), Union Electric Company (AmerenUE) hereby requests NRC approval of attached Relief Request 13R-10 regarding paragraph IWA-4221(b) of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code,Section XI. The Code Edition applicable to the current 10-year Inservice Inspection interval for Callaway Plant is the 1998 Edition (up to and including the 2000 Addenda).The requested relief is needed to support planned replacement of buried steel piping in Callaway's essential service water (ESW) system with polyethylene (PE) piping.For this repair/replacement activity, IWA-4221 (b) would require the new/replacement piping to meet the original Construction Code requirements for the ESW piping. The applicable Construction Code (ASME Section III), however, does not provide rules for the design, fabrication, installation, examination and testing of PE piping. ASME Code Case N-755, however, provides conditions under which PE material may be used for ASME Section III, Class 3 buried piping systems. AmerenUE therefore requests relief from the noted Code requirements in order to utilize the provision of Code Case N-755 with the exceptions identified in the attached relief request.Replacement of the current ESW steel piping with PE piping would provide an overall benefit to plant safety since PE piping is much more resistant to fouling and microbiologically induced corrosion, thus assuring improved long-term reliability ofrcs "7 the risk-significant ESW system.(a subsidiary of Ameren Corporation ULNRC-05434 August 30, 2007 Page 2 To provide sufficient time for planning of the ESW piping replacement and provide assurance of the planned approach, AmerenULE respectfully requests NRC review and approval of the attached relief request by May 31, 2008.It may be noted that no new regulatory commitments have been made or identified in this letter or its attachment.
Please contact Scott A. Maglio at 573-676-8719 for any questions you may have regarding this relief request.Sincerely, L. H. Graessle Manager, Regulatory Affairs LHG/TBE/slk Attachment ULNRC-05434 August 30, 2007 Page 3 cc: Mr. Bruce S. Mallett Regional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-4005 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077 Mr. Jack N. Donohew (2 copies)Licensing Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop O-7D1 Washington, DC 20555-2738 Missouri Public Service Commission Governor Office Building 200 Madison Street PO Box 360 Jefferson City, MO 65102-0360 ULNRC-05434 August 30, 2007 Page 4 Index and send hardcopy to QA File A160.0761 Hardcopy: Certrec Corporation 4200 South Hulen, Suite 422 Fort Worth, TX 76109 (Certrec receives ALL attachments as long as they are non-safeguards and may be publicly disclosed).
Electronic distribution:
C. D. Naslund A. C. Heflin T. E. Herrmann L. H. Graessle G. A. Hughes S. A. Maglio S. L. Abel D. M. Stepanovic M. D. Brandes S. L. Gallagher L. M. Belsky (NSRB)T. B. Elwood Ms. Diane M. Hooper Supervisor, Licensing WCNOC P.O. Box 411 Burlington, KS 66839 Mr. Scott Bauer Regulatory Affairs Palo Verde NGS P.O. Box 52034, Mail Station 7636 Phoenix, AZ 85072-2034 Mr. Scott Head Supervisor, Licensing South Texas Project NOC Mail Code N5014 P.O. Box 289 Wadsworth, TX 77483 Mr. Dennis Buschbaum TXU Power Comanche Peak SES P.O. Box 1002 Glen Rose, TX 76043 Mr. Stan Ketelsen Manager, Regulatory Services Pacific Gas & Electric Mail Stop 104/5/536 P.O. Box 56 Avila Beach, CA 93424 Mr. John O'Neill Pillsbury Winthrop Shaw Pittman LLP 2300 N. Street N.W.Washington, DC 20037 Attachment to ULNRC-05434 August 30, 2007 AmerenUE Callaway Nuclear Plant 10 CFR 50.55a Request Number 13R-10 Proposed Alternative to ASME Section XI Requirements for Replacement of Class 3 Buried Piping in Accordance with 10 CFR 50.55a(a)(3)(i)
AmerenUE 10 CFR 50.55a Request Number 13R-10 Page 2 of 5 Description of Proposed Alternative ASME Code Case N-755 provides the requirements for the design, fabrication, installation, examination and testing of polyethylene material for use in ASME Section III, Division 1, Class 3 buried piping systems.Specific sections of ASME Code Case N-755 that provide requirements for key aspects of the piping replacement, along with identification of any exceptions to the Code Case, are, identified below.Procurement The procurement of the polyethylene piping shall be in accordance with Sections -1200 and -2000 of ASME Code Case N-755.Material The polyethylene piping material shall be in accordance with Section-2000 of ASME Code Case N-755, with the following exceptions:
- Section -2000 references Supplement 2 of the Code Case for acceptable polyethylene material standards.
In lieu of the revisions identified in Supplement 2, the latest revisions of the material standards may be utilized and will be reconciled as necessary." In lieu of PE material with a cell classification of 445474C specified in Section -2110 of the Code Case, PE material with a cell classification of 445574C will be utilized.
The 445574C PE material has a higher tensile strength than the 445474C PE material." Section -3001 of the Code Case specifies that all mitered elbows will be three or five-joint mitered elbows. In addition to 90-degree mitered elbows, 45-degree and 22.5-degree mitered elbows may be utilized.
Mitered elbows of less than 90 degrees may have less than three joints.* Damage to polyethylene piping under scope of this relief request will be addressed by: (1) Either cutting out and replacing the damaged section of pipe or (2) Removing scratches or damage by blending and then verifying that the remaining material thickness meets all design requirements.
Any piping section with any damage exceeding 10% of the nominal wall thickness shall be cut out and replaced.The requirements of this provision are consistent with requirements of ASME B&PV Code paragraph ND-2558 for metallic materials and will be as follows: (1) Surface defects shall be removed by grinding or machining in accordance with the following requirements:
AmerenUE 10 CFR 50.55a Request Number 13R-10 Page 3 of 5 (a) The depression after defect elimination is blended uniformly into the surrounding surface with a maximum taper not to exceed 3:1 (ratio of width to height).(b) After defect elimination, the area will be examined by visual examination to ensure that the defect has been removed.(c) If the elimination of the defect reduces the thickness of the section below the minimum required design thickness, the section of piping containing the defect shall be cut out and replaced.Design The design of the polyethylene piping shall be in accordance with Section -3000 of ASME Code Case N-755 with the exception of the design pressure and temperature limitations of 150 psig at 140'F identified in Section -1100. The design pressures and temperatures of the various lines to be replaced will be 165 psig at 95°F, 160 psig at 95°F, or 45 psig at 180'F, as applicable to the specific line. For design temperatures less than or equal to 140 0 F, allowable stress values and moduli of elasticity will be in accordance with Tables 3021-1, 3031-3 and 3035-3 of the Code Case. Design pressures greater than 150 psig will be justified by analysis using the design provisions of ASME Code Case N-755. For design temperatures greater than 140'F, allowable stress values and moduli of elasticity will be determined through material testing.It should be noted that the design temperature of 180'F is selected to bound the peak post-LOCA discharge line operating temperature.
The peak post-LOCA temperature will be short-lived.
The long-term post-LOCA discharge temperature, as well as the discharge temperature during normal operation and normal shutdown, will be significantly lower than the 140'F Code Case temperature limitation.
This piping is not isolable and is an open ended return line discharging to the UHS Cooling Tower basin via the tower spray headers or the spray header bypass.Fabrication and Installation The fabrication and installation of the polyethylene piping will be in accordance with Section -4000 of ASME Code Case N-755.
AmerenUlE 10 CFR 50.55a Request Number 13R-10 Page 4 of 5 Examination The examination of the polyethylene piping will be in accordance with Section -5000 of ASME Code Case N-755.Pressure Testing The testing of the polyethylene piping will be in accordance with Section -6000 of ASME Code Case N-755.Basis for Use of Proposed Alternative The Callaway ESW system was originally designed with unlined carbon steel piping. Plant specific and industry operating experience has shown that carbon steel piping is susceptible to fouling, corrosion, and microbiologically induced corrosion (MIC) for raw water applications.
The use of corrosion resistant steel piping provides added resistance to these problems, but does not eliminate susceptibility.
Alternatively, the use of internal linings or coatings in carbon steel piping provides resistance to these problems.However, degradation of and/or damage to the linings and coatings can cause exposure of the carbon steel piping to the raw water, resulting in piping degradation.
Additionally, the linings and coatings can pose a potential foreign material concern if they are released from the piping wall as a result of the degradation or damage.Polyethylene piping pipe will not rust, rot, pit, corrode, tuberculate or support biological growth. The use of polyethylene piping in raw water applications will thus ensure long term reliability from a structural integrity and flow standpoint.
Callaway has recently installed approximately 600 linear feet of 36-inch diameter buried polyethylene piping in a non-safety related blowdown application and has not experienced any significant problems.
On a larger scale, Duke Power Company has installed 20,000 linear feet of polyethylene piping at Catawba Nuclear Station in non-safety related raw water applications.
Since the installations began in 1998, Duke Power Company has reported that the material has had an excellent service history and has not experienced fouling or corrosion.
The use of polyethylene piping in accordance with ASME Code Case N-755, with exceptions as noted in Section 5 of this request, will result in improved system performance and enhanced system reliability, and will provide an acceptable level of quality and safety.
AmerenUE 10 CFR 50.55a Request Number 13R-10 Page 5 of 5 6. Duration of Proposed Alternative The use of the proposed alternative is requested for the third ten-year inservice inspection interval for Callaway, during which the ASME Boiler and Pressure Vessel Code,Section XI, 1998 Edition with the 2000 Addenda is used for repair/replacement activities.
The Callaway third ten-year inservice inspection interval is currently scheduled to end on December 18, 2014.7. References ASME Code Case N-755, "Use of Polyethylene (PE) Plastic Pipe for Section III, Division 1, Construction and Section XI Repair/Replacement Activities," as approved by BPV Standards Committee 02/02/2007.
Regulatory Guide 1.84, Revision 33, "Design, Fabrication, and Materials Code Case Acceptability, ASME Section III." Regulatory Guide 1.147, Revision 14, "Inservice Inspection Code Case Acceptability, ASME Section XI, Division 1." The Plastics Pipe Institute, Inc. "Handbook of Polyethylene Pipe"