American Institute of Steel Construction

shawlaskewvilleUrban and Civil

Nov 29, 2013 (3 years and 8 months ago)

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American Institute of Steel Construction






Charlie Carter

Vice President and Chief Structural Engineer

ANSI/AISC N690
-
12

Specification for Safety
-
Related Steel Structures for Nuclear Facilities


The current specification was recently completed and replaces the 2006
edition.


Major changes include:


A general update to remain aligned with ANSI/AISC 360
-
10,
Specification for
Structural Steel Building


Revisions to load combinations involving wind loads to align with ASCE/SEI 7
-
10,
Minimum Design Loads for Buildings and Other Structures


Revisions to chapter on
Fabrication and Erection


A new chapter on
Quality Control and Quality Assurance

ANSI/AISC N690
-
12

Specification for Safety
-
Related Steel Structures for Nuclear Facilities


The committee has just started the next code cycle and is evaluating
prospective changes for the 2017 edition.


A special
Supplement

dealing with composite, modular wall construction is
currently under development and will be issued prior to the next edition
of N690 to address the recommendations of NESCC


Concrete Codes and
Standards for Nuclear Power Plants: Recommendations for Future
Development. (June 2011)



Adhoc Subcommittee

on

Modular Composite Construction

Subcommittee on Modular Composite
Construction


Task: Development of Design, Analysis, Materials,
Fabrication, and Erection of SC structures


Contributors: Design companies, NSSS vendors,
utilities, fabricator, and regulator


Deliverable: Appendix N9 to N690


Progress: approximately 90% of the subcommittee
work is complete


Schedule:


Draft for Main Committee ballot: July 2013


Final ANSI approved and released document: May 2015



Highlights of Appendix N9:

Specification for Steel
-
Plate Composite (SC) Walls in
Safety
-
Related Structures for Nuclear Facilities


Design Requirements


Load Combinations


Compactness


Analysis Requirements


Effective Stiffness


Geometric and material
properties


Accidental Thermal
Condition


Design for Tension


Design
for
Compression


Design for out
-
of
-
plane
Flexure


Design for in
-
plane and
out
-
of
-
plane shear


Design for combined
forces


Connection Design


Design for impactive
and impulsive loads