C . NR Enhanced Shield S

January 22
22, 2014
1
Licensee Assessment of AP1000® Enhanced Shield
Building Design for Licensing Basis Compliance
Public
ub c Sess
Session
o with
t U
U.S.
S NRC
C
C. Next Steps - Phase 2 Assessment
B. Assessment Results
A. Scope of Phase 1 Assessment
II. High-Level Summary: Shield Building
A
Assessment
t Results
R
lt Aff
Affecting
ti License
Li
I. Vendor Oversight Process
Presentation Topics
2 2
Focus area selection
Licensing basis compliance
 Results of the process to date
 Next assessments
 Completed assessments
•
•
 Systematic approach
 Joint effort (Consortium/SCE&G/SNC)
Vendor Oversight Process
3
•
•
•
•
Experienced
E
i
d team
t
(>150 years))
Preparation for inspection
Inspection
Results
 Shield Building Phase 1 Assessment
Vendor Oversight Process
4
– Design
g Calculations,, Drawings,
g , DCPs,, and E&DCRs
 Documents Reviewed:
– Penetrations in SC Cylindrical
y
Wall
– SC Cylindrical Wall Panels
• Auxiliary Building Walls and Roof Connection
• Horizontal Connection - Elevation 100
100’, Plant West Side
• Vertical Connection – Elevation 100’ to 149’-6”
• Horizontal Connection – Elevation 149’-6”, Plant East Side
5
– Reinforced Concrete (RC) to Steel & Concrete Composite (SC) Mechanical
Connections
 November 44-8,
8, 2013 - Phase 1 Assessment:
Scope of Phase 1 Assessment
High-Level Summary
High-Level Summary
6
Incorporate in SNC LAR 13-014
•
•
All Documented via Issue Reports ((IRs)) in Westinghouse
g
Corrective Action Program
No design changes were identified
 6 Design Basis Documentation Issues
•
 1 Li
Licensing
i Basis
B i Di
Discrepancy
 57 Requests for Information Generated
Phase 1 Assessment Results
High-Level Summary
7
•
•
•
•
•
Air Inlet and Tension Ring
SB Roof
R f
Knuckle Region
Compression Ring
PCS Tank
(
(expected
t d 2nd Quarter
Q t 2014)
Phase 2 Assessment
Next Steps
8
Design Change Proposal
Engineering and Design Coordination Report
License Amendment Request
P i Containment
Passive
C t i
t Cooling
C li System
S t
Reinforced Concrete
Steel & Concrete Composite
DCP:
E&DCR:
LAR:
PCS
PCS:
RC:
SC:
Acronym List
9