ASME NUCLEAR CODES & STANDARDS
RELIABILITY AND INTEGRITY MANAGEMENT (RIM)
- REWRITE OF SECTION XI, DIVISION II,
USING RISK INFORMED METHODOLOGY FRANK J. SCHAAF,JR, P.E.
ASME CHAIRMAN, SWGRIM
CONSULTANT, STERLING REFRIGERATION CORP
NESCC
Washington DC
November 3, 2014
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Disclaimer
This presentation is the intellectual
property of Frank Schaaf, the
comments made are his alone and
are not an ASME official position.
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AGENDA
 Background Review
 RIM (Reliability and Integrity Management)
 SBC (System Based Code)
 Update Progress (last year)
 Conclusion
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BACKGROUND
PHILOSOPHY OF SECTION XI
The philosophy of Section XI is to
mandate a sufficient number of examinations
and tests (selected deterministically) to
provide assurance that the original safety that
was designed and built into the plant is
maintained throughout it’s service life.
L.J. Chockie (1975)
Chair, Section XI
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VISION FOR ASME NUCLEAR CODE
Load and Resistance
Factor Design (LRFD)
• Cold piping
• Hot piping
• Current classification
Risk-Informed Design
• Direct use of plant PRA
ASME III
Code Cases • Develop risk criteria
• Piping application
• Plant PRA insights
ASME III
Code
Changes
Life-Cycle Process/
System-Based Code
• Other components
• Current risk criteria
Prior ASME
Research &
Code RiskInformed
Work
2-3 years
3-5 years
5-10 years
Other ASME
Nuclear C&S
Risk-Informed Safety
Classification
Plant
PRA
Review and adapt
risk-informed safety
classification Code
Case N-660 for
repair/ replacement to
ASME III design
ASME O&M
• Risk-Informed IST
ASME
Code Case
ASME Section XI
• Risk-Informed ISI
• Risk-Informed RRM
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RIM (RELIABILITY AND INTEGRITY MANAGEMENT)
 Reliability
and Integrity Management (RIM):
Those aspects of the plant design process that are
applied to provide an appropriate level of reliability of
SSCs and a continuing assurance over the life of the
plant that such reliability is maintained. These include
design features important to reliability performance
such as design margins, selection of materials, testing
and monitoring, provisions for maintenance, repair
and replacement, pressure and leak testing, and Inservice Inspection (ISI).
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RIM (RELIABILITY AND INTEGRITY MANAGEMENT)

Step 1 Determine Scope of SSCs for RIM Program

Step 2 Evaluate SSC Damage Mechanisms

Step 3 Determine Plant and SSC Level Reliability and
Capability Requirements

Step 4 Evaluate RIM Strategies to Achieve Reliability Targets

Step 5 Evaluate Uncertainties in Reliability Performance

Step 6 Determine Scope and Parameters of RIM Program

Step 7 Monitor SSC Reliability Performance and Update RIM
Program
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RIM (RELIABILITY AND INTEGRITY MANAGEMENT)
SYSTEM BASED CODE CONCEPT
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RIM (RELIABILITY AND INTEGRITY MANAGEMENT)
SYSTEM BASED CODE CONCEPT
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RIM (RELIABILITY AND INTEGRITY MANAGEMENT)
SYSTEM BASED CODE MODEL
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RIM (RELIABILITY AND INTEGRITY MANAGEMENT)
SYSTEM BASED CODE MODEL
Need for new PRA Standard

2006 – Non-LWR PRA Standard created, includes;
 Design
Element
 Level
1, 2, and 3 Elements
 Multi-units on same site
 ISI & NDE Methods

2013 – Non-LWR PRA Standard, Approved for
Trial-Use
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RIM (RELIABILITY AND INTEGRITY MANAGEMENT)
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RIM (RELIABILITY AND INTEGRITY MANAGEMENT)
 ASME,

SECTION XI, DIVISION 2
SCOPE
All reactor types (water, gas, metal, salt)
 All reactor sizes
 Target reliabilities for passive SSCs
 Evaluate consequences of SSC failure
 Flexible Inspection Intervals
 Examination Strategies development
 Repair/Replacement & Maintenance

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RIM (RELIABILITY AND INTEGRITY MANAGEMENT)
 ASME,

SECTION XI, DIVISION 2
RIM-1000
 RIM-2000
 RIM-3000
 RIM-4000
 RIM-5000
 RIM-6000
 RIM-9000
SCOPE AND RESPONSIBILITY
RIM PROGRAM
EVALUATION & STANDARDS
REPAIR/REPLACEMENTS
SYSTEM PRESSURE TESTS
RECORDS
GLOSSARY
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RIM (RELIABILITY AND INTEGRITY MANAGEMENT)
 ASME,

SECTION XI, DIVISION 2
APPENDICISES
1. Plant Type (Water, Gas, Metal, and Salt)
2. Mandatory
 Appendix I – NDE Strategies
 Appendix II – U.S. Administrative Requirements
Appendix III – Owner’s Reports (Program Activities)

Appendix IV – Qualification Program for NDE

Appendix V – Catalog of NDE Examination Requirements
3. Non-Mandatory
TBD

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RIM (RELIABILITY AND INTEGRITY MANAGEMENT)
1.E+01
Unacceptable
EVENT SEQUENCE MEAN FREQUENCY (PER PLANT YEAR)
1.E+00
A00 REGION
Event AD
1.E-01
Event AS
1.E-02
Acceptable
1.E-03
LBE Legend
A - Example of SSC in Category NSRST
Event AS - LBE (AOO) with successful Operation of A
Event AF - LBE (DBE) with failure of A
Event AD - LBEs AS and AF with assumed degradation of A
B - Example SSC in Category SR
Event BS - LBE (DBE) with successful Operation of B
Event BF - LBE (BDBE) with failure of B
Event BD - LBEs BS and BF with assumed degradation of B
C - Example of SSC in Category NSR
Event CS - LBE (DBE) with successful operation of C
Event CF - LBE (BDBE) with successful operation of C
Event CD - LBEs CS and CF with assumed degradation of C
Event AF
DBE REGION
Event CD
Event CS
Event BD
Event BS
1.E-04
1.E-05
TLRC
Increasing Risk
BDBE REGION
Event CF
Event BF
1.E-06
1.E-07
1.E-08
1.E-04
Iso-risk Contours
1.E-03
1.E-02
1.E-01
1.E+00
1.E+01
1.E+02
DOSE (REM) AT EXCLUSION AREA BOUNDARY (EAB)
1.E+03
1.E+04
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RIM (RELIABILITY AND INTEGRITY MANAGEMENT)
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RIM (RELIABILITY AND INTEGRITY MANAGEMENT)
Markov Model Evaluation of
Plant Age and RIM Strategy Impacts
100.00
PBMR RIM Cases
Integrity Management Factor
LWR RIM Cases
10.00
LWR RIM:
RIM = reliability and integrity management
100% Leak Tested @90% POD every 1.5yrs
50% NDE @50% POD every 10 yrs
POD = Probability of detection
NDE = Non-destructive examination
1.00
PBMR RIM
OLLD - On-line leak detection with 90% POD in 24hrs
Secondary NDE - 50%POD every 12yrs
Primary NDE - 90% POD every 12 years
0.10
0.01
RIM Case 1:
T = 27yrs LWR RIM
RIM Case 2:
T = 27yrs No RIM
RIM Case 3:
T = 40yrs LWR RIM
RIM Case 4:
T = 40yrs No RIM
RIM Case 5:
T = 40yrs Primary NDE
RIM Case 6:
T = 40yrs OLLD - No
NDE
Plant Age (T) and RIM Strategy
May 14, 2007
ASME SWG on HTGRs
RIM Case 7:
T = 40yrs OLLD Secondary
NDE
RIM Case 8:
T = 40yrs OLLD Primary NDE
TECHNOLOGY
INSIGHTS
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RIM (RELIABILITY AND INTEGRITY MANAGEMENT)
 UPDATE
IN LAST YEAR

Development of NDE Strategies Appendix

Development of NDE Qualification Appendix

(Procedures and Personnel)
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RIM (RELIABILITY AND INTEGRITY MANAGEMENT)
 UPDATE

IN LAST YEAR
Development of NDE Strategies Appendix
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RIM (RELIABILITY AND INTEGRITY MANAGEMENT)
 UPDATE

IN LAST YEAR
Development of NDE Qualification Appendix
Totally Performance Based
 Procedures and Personnel
 Performance demonstration use use Section V, Article
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
Performance demonstration establishes the ability
of a specific examination system (i.e. equipment,
procedures and personnel) to achieve a desirable
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level of performance i.e.. risk reliability.
RIM (RELIABILITY AND INTEGRITY MANAGEMENT)
 SSC
CLASSIFICATION
No Classification required
 All passive SSC in RIM Program
 RIM Program developed by Owner
 ASME would not reference another
organization's document
 For construction would use NRC documents

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CONCLUSION
 Hoping
 RIM
NuScale will become pilot plant
publish in 2017 edition of Section XI
 Questions
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