U.S. NRC and Industry Public Meeting

Buried/Underground Piping

American Society of Mechanical Enginee

January 21, 2015

Daniel W Lamond Daniel

W. Lamond

Amec Foster Wheeler AES
ASME SCXI Buried Component Activities

Committee Groups Relevant to Buried Compon• TG Buried Component Inspection & Test• TG Evaluation Procedures for Degraded 

Piping

• WG Pressure Testing• Special WG Nuclear Plant Aging Manage• SG Water Cooled Systems• SG Nondestructive Examination• SG Industry Experience for New Plants
ASME SCXI Buried Component Activities

Current Section XI Rules• IWA-5244, Buried Component Leakage T

– Visual of Annulus Visual of Annulus– Pressure Decay or Change in Flow– Unim

paired Flow 

• Code Case N-776, Ground Surface Exam

Program (Approved April 2010)

• Code Case N-806 (Approved June 2012)

– Evaluation of Metal Loss for Cl. 2&3 Buried M

Pipe with Back Pipe with Back

-Fill

– Revision -1 Near Completion for Standards 

Committee Approval
ASME SCXI Buried Component Activities

TG BCIT TG BCIT – Recent History Recent History• November 2010 (TG Approved by Executive Committee)• 2012 (4 Meetings) 2012 (4 Meetings)

→ Identification of Code Areas for Inclusion/Update→ Code Case Alternatives to IWA-5244→ C d A ti f BP Ri k R ki d I ti C

o

de 

A

ction 

for BP Ri

s

k

Ranking an

d Inspections

• 2013 (4 Meetings)

→ Action Items (Definitions, Methods, Fukushima, In

→ Letter Ballots (Leakage Testing & Risk Ranking & 

• 2014 (4 Meetings)

→ Passed TG and on to WG (Definitions Risk Rank

TG and on to WG (Definitions, Risk Rank

→ Passed TG on Hold for Full Action (Scope, Accep

• 2015 (4 Meetings Planned)

N t M ti i H t J 26 2015

→

Nex

t

Meeting in 

Hous

ton on 

January 26, 2015
ASME SCXI Buried Component Activities

TG BCIT TG BCIT – Goals• Consider All Stakeholders• Evaluate the Safety and Functional Impa

Recent Operating Experience

• Consider Industry Group Activities and G• Assess and Support Inspection Techniqu

Dl t eve opmen

t

• Codify Best Practices
ASME SCXI Buried Component Activities

TG BCIT TG BCIT – Scope• Buried and Underground Piping & Compo• Commission Activities• Industry Groups (NEI, EPRI, INPO, NACE• TG Charter

– Programmatic– Inspection & Testing– Mitigation, Repair, Replacement– D i d N Pl t Design an

d

New Plan

t

s
ASME SCXI Buried Component Activities

TG BCIT TG BCIT – Scope, Phased Approach Scope, Phased Approach• Component Classifications

Safety Related

Cl d 1 2 d 3

Non-Safety Relate

Safety Relate

• Classe

d

1, 

2, an

d

3 M C id 

• Non-Classed

•

Many 

Considera

- Function

- Impact- Jurisdiction- Owner
ASME SCXI Buried Component Activities

TG BCIT TG BCIT – Action Item Status Action Item Status

AI #1 Liaisons – NACE and Section V Initial CoAI #2 Develop Historical White Paper Develop Historical White Paper ClosedAI #3 Define Scope Initial CoAI #4 Compile Industry Papers Initial CoAI #5 BP Inspection Methods OpenAI #6 EPIX Operating Experience Initial CoAI #7 BPI Initiative Timeline ClosedAI #8 Codify New IWA-5244 Rules ClosedAI #9 Risk Ranking Methodology OpenAI #10 Non Mandatory App Non Mandatory App - IWA

-5244 Guide 5244 Guide Closed

AI #11 Fukushima Lessons Learned ClosedAI #12 IWA-9000 Buried Comp Definition(s) OpenAI #13 Examination Requirements Tables Open
ASME SCXI Buried Component Activities

TG BCIT TG BCIT – AI #5, List of BP Inspection Methods AI #5, List of BP Inspection Methods• First Compilation, No Screening Criteria

Di t rec

t I di t

• Visual Inspection• Liquid Penetrant Testing

M ti P ti l T ti

Indirec

t

• Pipe-to-Soil Potential• Direct Current Voltage 

• Magnetic 

Parti

cle 

Testing P S / Alt 

• Guided Wave• Lamb Wave

R t Fi ld T ti

• Pearson 

Survey 

/ Alter

Voltage Gradient

• Close Internal Potentia

• Area Potential Earth C

• Remo

te Fi

eld

Testing

• Magnetic Flux Leakage• UT & Inspection Vehicles

• Area Potential Earth C• Soil Analysis

• Next : Industr

y Surve

y Results 

– Bin wha

• Radiography• Electromagnetic Technology

y y

are currently doing, Lessons Lear
ASME SCXI Buried Component Activities

TG BCIT TG BCIT – AI #9, Risk Ranking Methodology AI #9, Risk Ranking Methodology• Based on Current Industry Methods• Challenges 

– Level of Detail, Risk Metrics

• Consequence/Failure Potential Matrix

• Passed TG BCIT• Introduced at WGPT in November 2014
ASME SCXI Buried Component Activities

TG BCIT TG BCIT – AI #12, IWA AI #12, IWA-9000 Buried Component 9000 Buried Component 

Definition(s)

• One Definition for Buried Components One Definition for Buried Components• One Definition for Underground Compone• P d TG BCIT Passe

d TG BCIT

• Package and Record for WGPT January 
ASME SCXI Buried Component Activities

TG BCIT TG BCIT – AI #13, Examination Requirements T

AI #13, Examination Requirements T

• Consider New Tables

– IWC-2500-1 Category C-

_ & IWD-2500-1 Category D-

• Inspect for Degradation, Not Leakage• R f N M d t A di f 

R

e

ference 

New 

Man

d

a

tory 

Appendix 

for 

• Sponsors Assigned to Appendix Sections

–

Z

-1100 Scope (Draft Complete) 1100, Scope (Draft Complete)

– Z-1200, Components Subject To Examination, Risk Ra– Z-2000, Examination Methods– Z-3000, Acceptance Standards (Passed TG BCIT)– Z-4000, Repair / Replacement (Current IWA-4000 Suff–

Z

-6000, Records and Reports

6000, Records and Reports
ASME SCXI Buried Component Activities

Summary• Strengthening ASME Standards relative t

Buried Component Inspection Buried Component Inspection

• Consideration of Ongoing Industry Activit• Phased Approach to Scope Phased Approach to Scope• Enabling Clear Requirements and Consis

Fleet Im

plementation