Nuclear Standards for Polymeric Piping Aaron Forster, NIST Engineering Laboratory NIST, MS Bureau Drive Gaithersburg, MD (301)

NESCC HDPE Status: PPTG report released in January 2013 Held a workshop on February 28, 2013 to discuss merger of NESCC and ASME HDPE Roadmaps Continue to Formalize Roadmap with communication between ASME and NRC Held meeting at NRC on March 14, 2013 to discuss input on short term priorities. Planning 2 nd workshop for April 18, 2013 to further progress in creating a “Joint HDPE Roadmap” plan

ASME Roadmap Implementation Issues Planning Resolutions Standards Development Endorsement Capturing Issues from Regulators and industry Prioritization of Issues/concerns with input from NRC, DOE, SDOs and industry Confirm Regulatory acceptance of priorities Identify projects: utilize ASME’s HDPE Roadmap, NESCC’s report & other sources Develop project scope Establish tasks, schedule & budgets Identify target code case or standard Identify funding Coordinate with other SDO’s, & government entities. Obtain regulatory buy- in on the plan forward Solicit Contracts with R&D Entities Oversee R&D Projects Review Results Share Final Findings and Outcome with Committees/NRC Confirm regulatory agreement of Issue Resolution Standards development and writing Revise or create Technical Concerns, Code Cases or Standards Consensus process Adoption to the Code NRC participation in first 4 phases lead to standards endorsement Obtain NRC endorsement of new or modified code cases or standards

HDPE Roadmap Workshop EPRI Headquarters February 28, 2013 Objective:  Coordinate the NESCC and ASME “Joint Roadmap” efforts. Let’s work from one template.  Identify potential short and long term R&D projects, deliverables, and standards impacts.  Prioritize projects  Identify current efforts on R&D, both confirmatory and new research Attendees: DOE, NRC, ASME, ASTM, EPRI, NIST Deliverables:  Consensus Roadmap with basic prioritization  Develop an understanding of current efforts and future research efforts required  Methodology to track progress at ASME  Methodology to prioritize projects and sub-tasks  Strategy for Stakeholder engagement (Future Meeting)

Move away from a numbered list to an actionable plan…. 1.NESCC – HDPE use by Catawba Nuclear Station, Steve Lefler, Duke Energy 2.NRC Issues Regarding the use of HDPE piping in safety-related nuclear applications, Use of HDPE for Power Plant Piping Systems Workshop, June 7-10, 2010 North Carolina 3.STP-NU-YYY ASME Code Development Roadmap for HDPE Service Pipe in Nuclear Service, under revision 4.NESCC Polymeric Pipe Task Group Report, 2012, balloted for draft Need or ConcernIdentified Need? 1 Thin wall vs. thick wall and thermal gradients NRCASME 2 Fusion Joints 2a Validated and standardized fusion joint test for short and long term performance NRCASMENESCC 2b Butt fusion standardization and qualification NRCASMENESCC 2c Electrofusion standardization and qualification NRCASMENESCC 2d Essential variables for fusion of all materials NRCASMENESCC 2e Qualification procedure personnel and equipment NRCASMENESCC 2f Long term performance of fusion joints (SCG resistance) NRCASMENESCC 2g Performance based fusion procedure, performance, equipment NRCASMENESCC 3 Expanded standards for fittings and design ASMENESCC 4 Allowable stress for service temperature up to 140 F NRCASMENESCC 5 Determination of allowable surface flaw up to 10% of wall thickness NRCASMENESCC 6 Long term performance 6a Creep behavior at elevated temperature and transient temperature and pressure NRCASME 6b Fracture mechanics qualification for crack growth ASME 6c Substantiation of linearity of HDB curve at 140 F NRCASMENESCC 6d Incorporation of chemical degradation into standards NRCASMENESCC 7 Pipe hangers and supports NESCC 8 Seismic design ASMENESCC 9 Fire Resistance ASMENESCC 10 Visual and volumetric testing qualifications and requirements NRCASMENESCC

Prioritization: Prioritize according to Code Deliverables: i.Short term (under 3 years) 1.Specify as “A” priority 2.conditioned code case: N755 (Section III) and 808 (Section XI) 3. currently working to finalize these priorities. Hard deadline is April 18, ii. Med term (under 5 years) 1. Specify as “B” priority 2.Collecting identified research gaps. Negatives resolved to go from conditionally accepted to fully accepted. iii. Long term (under 10 years) 1.Accept conditions and details into ASME code a.N755 (Section III) and 808 (Section XI) 2.Fully accepted code case with no conditions

Interconnecting Roadmap

Short Term (Conditioned CC)

Medium Term (Unconditioned CC)

Methodology to Commonize Roadmaps: Basic level:  Do they have the same information Answering the questions:  What are all the issues?  Why these issue are critical?  What needs to be done for conditional endorsement and then for full endorsement?  Priorities within a group?  What issues have been resolved, what activities under way including research and what research still needs to be done?  Project timing for new activities and research?.

Methodology to Track Progress: Go through 1 line of the ASME tracking spreadsheet Go through 1 topic of the research plans Need to switch to Excel during presentation

Concerns: Main concerns (personal view): Acceptance of this path forward in ASME volunteer community Developing a champion within the community of stakeholders Stewardship of roadmap Fostering communication between the stakeholders and regulators Funding those tasks that require more than code writing in the short term

Stakeholders Meeting Objective: Educate the economic and operational case for HDPE code acceptance, Demonstrate the current regulatory and engineering challenges for HDPE usage that have limited deployment, Identify impact of conditional approval on market development, Present effort to manage existing ASME and NESCC R&D priorities into one Roadmap to support short and long term design, implementation, and regulatory goals, Gain feedback from relevant industries regarding implementation and support of this process Attendees: Utility Operators, Plant Design and Construction, Plastic Pipe producers, NRC, ASME