Page 14 - Nuclear Plant Journal - March April 2013
Basic HTML Version
14
Nuclear Plant Journal, March-April 2013
New
Documents
EPRI
1.
Nuclear Maintenance Applications
Center:
Main
Feedwater
Pump
Maintenance Guide.
Product ID:
1026476. Published November, 2012.
Loss of a main feedwater pump
can have severe economic impact on a
nuclear utility. The majority of forced
outages or power reductions are believed
to be attributed to nondesign issues. Case
leaks, excessive vibration, seal leaks,
and lubrication system problems are
shown to significantly impact feedwater
pump availability. Improved maintenance
practices and increased attention to these
issues are critical for realizing longevity
of main feedwater pumps.
2.
Plant
Engineering:
EPRI
Standardized Task Evaluation Program
Implementation Guide.
Product ID:
1025244. Published November, 2012.
The nuclear power industry uses
supplemental workers to support
outages and other work activities. It is
important to provide assurances that
these workers are knowledgeable and
skilled in the performance of the specific
tasks to which they will be assigned as
independent workers. The end result
must be objective, credible evidence to
show that the independent workers have
been evaluated to meet station standards.
One method of determining whether
a worker is proficient is by using the
Standardized Task Evaluation process.
This report provides guidance and detail
in the implementation of this program for
organizations operating under accredited
programs. The goal is to provide a work-
ready work force without redundant,
repetitive training and testing. Substantial
cost savings could result from the sharing
of industry personnel resources.
3.
Steam Generator Management
Program: Assessment of the Effect of
Deposit Removal Frequency on Sludge
Management.
Product ID: 1025127.
Published December, 2012.
InaPWRsteamgenerator, thebuildup
of deposits on the tubes near the tubesheet
can increase the risk of tube degradation.
To ensure the integrity of the tubes which
are part of the primary-to-secondary side
pressure boundary, various repair and
mitigation techniques are available which
have attendant benefits, risks, and costs.
To mitigate deposit buildup, utilities
employ a variety of deposit removal
techniques, such as sludge lancing and
chemical cleaning. This report addresses
the effect of sludge lancing frequency on
sludge management.
4.
Validation of Stress Corrosion
Cracking Initiation Model for Stainless
Steel and Nickel Alloys.
Product ID:
1025121. Published December, 2012.
An EPRI model to evaluate the stress
corrosion cracking (SCC) initiation,
including initial short crack growth and
the effects of cold work (CW) on SCC
susceptibility, has been successfully
validated. This SCC initiation model was
developed in earlier EPRI projects for Ni-
base alloys and austenitic stainless steel
in high-temperature water. The validation
has involved use of independent data sets
for as-received and cold-worked material
conditions as well as an alternate method
of estimating SCC initiation life, also
based on an independent source of data
not used in development of the SCC
initiation model.
5.
Welding and Repair Technology
Center: Assessment of Friction Stir
Welding forNuclearApplications.
Product
ID: 1025175. Published December,
2012.
This report describes a study that was
conducted to determine the usability of
friction stir welding (FSW) for the repair
of nuclear power plant components. The
first phase of the study has performances
in air and underwater welding on 304 SS,
308L SS, Alloy182, and Alloy 600 test
plates. In addition, crack sealing tests
were carried out using electric discharge
machining notches in these test plates.
A patch seal test was also added to the
test matrix to determine if a flat plate
could be successfully bonded in air and
underwater. The patch test was performed
on Type 304 SS.
The second phase of the project
will complete an in-depth metallurgical
examination of all tests conducted during
Phase 1. The third phase of the project
will be to design a prototype concept for
an underwater FSW tool to make repairs
to the shroud in a boiling water reactor
(BWR) and optimize the tool design for
underwater applications.
6.
Plant Engineering: Users Guide
for the Development of Life Cycle
Management Plans.
Product ID: 1025260.
Published December, 2012.
This guide provides direction for the
user in the development, implementation,
andmaintenance of life cyclemanagement
plans (LCMPs). The guide includes an
appendix containing a template that users
can employ in the development of their
plant-specific LCMPs.
7.
Nuclear Maintenance Application
Center Memo, Fall 2012.
Product ID:
1026814. Published December, 2012.
The NMAC Memo is an on-line
newsletter that may be accessed using
the link:
/
corporatedocuments/newsletters/nmac/
winter-2012/Memo.html
EPRI’s
Nuclear
Maintenance
Applications Center (NMAC) serves as
an international forum delivering proven,
practical techniques and methods to
successfully improve member’s plant
maintenance activities. The NMAC
Memo is published three times a year and
covers recent, ongoing, and upcoming
NMAC activities and accomplishments.
The above EPRI documents may be
ordered by contacting the Order Center
at (800) 313-3774 Option 2 or email at
