Page 20 - July-August 2012
Basic HTML Version
20
Nuclear Plant Journal, July-August 2012
New
Documents
EPRI
1.
Summary of the EPRI Early Event
Analysis of the Fukushima Daiichi Spent
Fuel Pools Following the March 11,
2011 Earthquake and Tsunami in Japan.
Product ID: 1025058. Published: May,
2012.
As part of its Fukushima response,
EPRI collaborated with experts from
nuclear utilities, vendors, and national
laboratories to evaluate the key theories
and available data in support of EPRI’s
larger effort to provide timely information
to the Tokyo Electric Power Company
(TEPCO) and other member utilities on
issues relevant to the safe management
of spent nuclear fuel. Early products
included assessments of the following:
1) re-criticality risk upon reflooding of a
dry pool; 2) fuel pool evolution following
loss of cooling; 3) likelihood of localized
voiding within individual fuel assembly
channels, leading to cladding heat-up and
oxidation with release of hydrogen gas;
and 4) potential significance of hydrogen
from radiolysis in a boiling fuel pool.
2.
Program on Technology Innovation:
Nondestructive Evaluation Inspection
of Concrete Structures Subjected to
Corrosion – State of the Art, Reliability,
and Future Trends.
Product ID: 1025627.
Published: May, 2012.
This report confirms the difficultly in
assessing the corrosion rate (that is, the
rate of steel loss), using linear polarization,
as a result of large uncertainties
associated with the polarization area and
the variability of the resistivity in the
concrete cover when drying. Therefore,
there is a strong industrial need to develop
a technique that can reliably measure
the current loss in steel embedded in
concrete. This report mentions the use
of microwave holography, for which
a preliminary research project has
commenced at EPRI.
3.
Seismic Walkdown Guidance: For
Resolution of Fukushima Near-Term Task
Force Recommendation 2.3: Seismic.
Product ID: 1025286. Published: June,
2012.
The objective of the work reported
in this document is to provide guidance
on the performance of plant seismic
walkdowns to satisfy the requirements of
Near-Term Task Force Recommendation
2.3: Seismic.
4.
EDF Implements U.S. Technologies
and Lessons Learned to Optimize Nuclear
Decommissioning Projects.
Product ID:
1025663. Published: June, 2012.
EPRI reports and software support
EDF’s long-term strategy to mitigate
risks, manage costs, and ensure safety of
complex demolition projects.
5.
Losses of Offsite Power at U.S.
Nuclear Power Plants - 2011.
Product
ID: 1025749. Published: June, 2012.
This report describes the loss of
offsite power experience at U.S. nuclear
power plants during the year 2011 and
provides insights into the causes of
offsite power losses during the period
2002–2011.
6.
Program on Technology Innovation:
Volume Reduction Methods and Waste
Form Changes for High-Activity Spent
Resin.
Product ID: 1025303. Published:
June, 2012.
This report studies the opportunities
to reduce the volume of Class B resin
waste sent for disposal from both
pressurized water reactor and boiling
water reactor plants. During reactor
power operation, ion exchange resins are
used on site for a number of purposes, for
example, reactor water cleanup, fuel pool
cleanup, boron recycling, and condensate
polishing systems. These operations
give rise to the accumulation of spent
ion exchange resin with a wide range
of chemical and radiochemical loading;
some of which are Class B/C in nature
or perhaps intermediate level waste in
international settings.
The above EPRI documents may be
ordered by contacting the Order Center
at (800) 313-3774 Option 2 or email at
.
Nuclear Regulatory
Commission
SECY
1. SECY-12-0081, Risk-Informed
Regulatory Framework for New
Reactors.
Published: June, 2012.
The SRM on SECY-10-0121
directed the staff to continue to use
the existing risk-informed framework,
including current regulatory guidance,
for licensing and oversight activities for
new plants, pending additional analysis.
Specifically, the SRM directed the staff
to engage with external stakeholders in a
series of tabletop exercises to test various
realistic performance deficiencies, events,
modifications,andlicensingbaseschanges
against current U.S. Nuclear Regulatory
Commission (NRC) policy, regulations,
guidance and all other requirements (e.g.,
technical specifications (TS), license
conditions, code requirements) that are or
will be relevant to the licensing bases of
new reactors. The purpose of the tabletop
exercises was to either confirm the
adequacy of those regulatory tools (and
make the NRC aware of these potential
scenarios such that commensurate
regulatory oversight can be applied) or
identify areas for improvement, such
as potential adjustments to the Reactor
Oversight Process (ROP).
2. SECY-12-0084, Status Report on
Power Uprates.
Published: June, 2012
.
This information paper summarizes
the power uprate program accomplish-
ments and challenges since the last up-
date in SECY-11-0071, “Status Report
on Power Uprates,” dated May 25, 2011.
This paper does not address any new
commitments or resource implications.
The above NRC documents can be
obtained from the NRC Public Document
Room, telephone: (301) 415-4737, fax:
