Timeline of Roadmap Development

2013 Today

Feb: NESCC developed an interconnecting roadmap between research – NRC questions – Standards & Codes

Apr: ASME, NESCC, and NRC refined Roadmap to reflect short and long term goals. Workshop held at EPRI (D.C.) with Industry Stakeholders to refine goals and responsibilities. Achieving a conditioned code case in short term.

May: Roadmap reviewed at the ASME BPV meeting in Miami to further refine roadmap.

July: Monthly meeting begins to address changes or updates to Roadmap. Inclusion of CC-808 in addition to CC-755.

Today: Inform buried pipe stakeholders of process and gain feedback on their participation

Roadmap: Organization

#

Priority

Issue Name & Source

Resolved?

Issue Description

Status &

Action Items R&D Tasks R&D Projects related to R&D Tasks Resolution

J04 A Resistance of butt joints to slow crack growth (SCG) relative to parent pipe material needs to be established1 (A4)(Butt fusion standardization and qualification )

Source :NRC

No Resistance of butt joint to slow crack growth (SCG) relative to parent pipe material needs to be established as in its current form, the CC does not address this item. The results of some recent tests on a limited scale suggest that the SCG resistance of butt fusion joint is an order of magnitude lower than that of the parent material.2

There are two issues related to SCG in HDPE pipe. 1) Performance of fusion joint based on established essential variables of fusion compared to non-flawed extruded pipe. 2) Performance of a flawed joint where the flaw represents a planar void, volumetric, fine particle contamination, or "cold fusion".

Status: Unresolved.

1) Rules Development: ASME Section XI TG has been set up to develop rules for evaluating flaws. TG to have Rules by Feb. 2014 for both CC N-755 & N-808 7

2) Research - Analytical: EPRI issued contract for review candidate approaches to evaluate flaws in joints to Doug Scarth of Kinetrics & will be supported by Phil Rush of MPR6 . (R&D Proj. 1a)

3) Research - Testing: Following CC agreement on the approach, EPRI will identify the follow-on work (e.g., tests) that will be needed to support the approach and develop code rules. Doug/Phil will have a first cut at an approach in Miami Code week, but expect at least one more code meeting will be needed before a consensus can be reached6. (R&D Proj. 1b)

4) NRC Review:

1) Develop Rules for Code for Evaluating Flaw (e.g., fracture mechanics Method) in Joints

1. Validation Testing of Proposed Rules for Flaws in Joints

3. Acceptance of initial long-term measurement methodology (creep, hydrostatic) of fusion strength as a function of fusion essential variables (Roadmap table #7.1)

1a. EPRI Project - develop rules to evaluate flaws in joints 6

Timing: end of 2013Cost: n/aTeam: EPRI (Kinetrics)

1b. EPRI Project - confirmatory testing of proposed rules with schedule depending on the type & amount of testing, and other issues (material availability & QA requirements) 6

Timing: mid 2015Cost: n/aTeam: EPRI (Kinetrics)

Resolution:

Standard/Code Case:

Roadmap Management:

• Monthly HDPE Roadmap Tracking Meetings: Meetings

In person meeting at ASME Code Weeks – 4 times/a year Teleconference format – 8 times/year Open participation meetings to update current and future

rule making and R&D Efforts to resolve Issues.

• Advantage of Roadmap Meeting at ASME Code Week Attending by Committee Section Members and various Chairs to

update a variety of HDPE Code work under way.

• Methodology to disseminate Roadmap Monthly email distribution Will explore alternative methods

Industry Response:

• Not many aware of NESCC or Activities

• Unrealistic expectations of NESCC and DOE role.

• There are definite projects where HDPE could be a solution, but management at plants is hesitant.

• Not clear right now how industry can play a role for code/regulatory process. I have put those that contacted me onto the list of roadmap call-in attendees.

• Code Case may not address some of newer technologies:

Cure in place pipe and slip-lining.

Questions and Discussion:

Thank You!

John GrimesProject Specialist

ASME ST-LLCgrimesj@asme.org

212-591-7558

Aaron ForsterMaterials Research Engineer

NISTAaron.forster@nist.gov

301-975-8701