2. 1998
Conference: FSA Technical Symposium
Paper Title: "Evaluating Live Loading of Bolted Joints to Improve
Gasket Performance Life"
Nashville, Tennessee April 26
Abstract:
In this day and age, utilizing the most effective gasket sealing products
is a must. In previous published papers it has been discussed that
flange Live Loading has shown to be an effective method of enhancing
a gasket's length in service. This paper will evaluate four different
factors: belleville spring configuration, gasket
material, gasket thickness, & gasket stress levels. The testing protocol
will be based on an accelerated thermal cycling steam test that
includes intervals of extreme thermal shock to simulate a rapid cooling
process. This testing will result in a comprehensive information matrix
of overall gasketing performance with and without liveloading.
3. 2000
Conference: AOV Users Group Summer Meeting
Paper Title: "Chesterton Mechanical Packing
Friction Testing"
Cleveland, Ohio August 15th
The paper was given at the AOV summer
meeting regarding initial valve packing friction
testing.
4. 2002
Conference: AOV Users Conference
Paper Title: "Valve System Management
Software"
Clearwater, Florida January 9th
This paper was an overview of the Valve Wizard
software program in respects to Nuclear Power.
5. 2004
Conference: AOV Users Conference
Paper Title: "AOV Valve Packing – Where it fits into the entire AOV Program
Puzzle"
Myrtle Beach, South Carolina January 14th
ABSTRACT
In today’s nuclear power world AOV performance is a key part of reducing
maintenance problems. AOV Valve Packing directly relates to the
effectiveness of an AOV Program at a plant and maintenance resources. This
paper will focus on detailed examples of where new technology AOV valve
packing is assisting plants in reducing their maintenance headaches. This
paper will focus on low friction packing technology that can bring a valve into
an operability window without sacrificing sealablity and creating chemistry
issues.
Also discussed are examples of the importance of maintenance training in
regards to a successful AOV packing program. This would include packing
consolidation and the misuse of stem lubricants to mask packing friction.
6. 2004
ISA Regional Conference
Paper Title: "AOV Valve Packing – Where it fits into the entire AOV Program
Puzzle"
Baton Rouge, Louisiana June 18th
ABSTRACT
In today’s modern Industry AOV performance is a key part of reducing
maintenance problems. Valve packing selection directly relates to the
effectiveness of any plant’s AOV Program and could result in an enormous
consumption of maintenance resources. One of the topics will focus on
detailed examples of new AOV valve packing technology developments that
have assisted plants in the reduction of maintenance headaches.
Another area of concern, which will be addressed, is the implementation of
good maintenance principles in an AOV program. This will include packing
consolidation procedures and the possible misuse of stem lubricants to mask
packing friction. Today it is important to utilize low friction packing
technology to allow a valve into an operability window without sacrificing
sealability and creating chemistry issues.
7. 2004
American Nuclear Society Utility Working Conference
Paper Title: "AOV Valve Packing – Where it fits into the entire AOV Program Puzzle"
Amelia Island, Florida August 8th.
ABSTRACT
In today’s nuclear power world AOV performance is a key part of reducing
maintenance problems. Valve packing selection directly relates to the effectiveness of
any plant’s AOV Program and could result in an enormous consumption of
maintenance resources.
One of the topics will focus on detailed examples of new AOV valve packing
technology developments that have assisted plants in the reduction of maintenance
headaches.
Another area of concern, which will be addressed, is the implementation of good
maintenance principles in an AOV program. This will include packing consolidation
procedures and the possible misuse of stem lubricants to mask packing friction. Today
it is important to utilize low friction packing technology to allow a valve into an
operability window without sacrificing sealability and creating chemistry issues.
8. 2005
Conference: AOV Users Conference
Paper Title: "Writing and implementing Packing Procedures – Lesson’s Learned"
Clearwater, Florida January 14th
ABSTRACT
In today’s nuclear power world critical valve performance is a key part of safe and
reliable nuclear plant operation. How plants’ Packing procedures are written and
implemented is critical in today’s world of shortened outages. There is no time for
repetitive gland adjustments or frequent packing installations because of poorly
written packing installation procedures. This paper will focus on plants with well-
written procedures that have resulted in maintenance, engineering, and I&C groups
taking total ownership of achieving peak performance from critical AOV / MOV Valves.
This paper will also include discussions regarding packing consolidation procedures
and the misuse of stem lubricants to mask packing friction. Today it is important to
utilize new low friction packing technology to enhance valve operability without
sacrificing long-term valve sealing.
9. 2005
Conference: ASME Pressure Vessels and Piping Conference
Title: Utilizing Direct Tension Squirter indicators in Industrial Applications
Denver, Colorado July 17th
Abstract:
In the world of critical bolting applications there is a need for achieving correct gasket
loads. The new technology of Direct Tension Squirter Washers is designed to show
visual indication when 60% of yield for a B7 bolt has been reached. Torque wrench
inconsistencies have caused many gasket failures. There are many times the incorrect
gasket load has been applied to bolted joints resulting in joint failure. The root cause
of these failures range from bad calculation of friction for anti seize to damaged
threads. DTSW ensures the bolts have reached the correct bolting load resulting in a
properly loaded gasket that will not be doomed for failure.
This paper will review the DTSW Technology and how it can be applied in Industry
applications. It will discuss the inaccuracy of torque wrench technology in today’s
industrial bolting environment. The paper will also highlight show the DTSW
technology ease of use compared to typical Indicator washers that require feeler
gauges.
10. 2005
Conference: 5th EPRI Conference on International Maintenance
Paper Title: "Writing and implementing Packing Procedures – Lesson’s Learned"
Jersey City, New Jersey August 8th
ABSTRACT
In today’s electricity generation industry world critical valve performance is a key part
of safe and reliable plant operation. How plants’ Packing procedures are written and
implemented is critical in today’s world of shortened outages and extended up-time.
There is no time for repetitive gland adjustments or frequent packing installations
because of poorly written packing installation procedures. This paper will focus on
plants with well-written procedures that have resulted in maintenance, engineering,
and I&C groups taking total ownership of achieving peak performance from critical
AOV / MOV Valves. This paper will also include discussions regarding packing
consolidation procedures and the misuse of stem lubricants to mask packing friction.
Today it is important to utilize new low friction packing technology to enhance valve
operability without sacrificing long-term valve sealing.
11. 2006
Conference: AOV Users Group 2006 Meeting
Paper Title: "Nuclear Valve Packing Performance Testing"
Clearwater, Florida January 14th
ABSTRACT
One of the most important challenges in today’s nuclear Valve arena is the
balance between packing performance and its frictional footprint. We have
undertaken a logical testing protocol to gather data on valve packing’s
performance/friction values throughout a full steam thermal cycle. This
testing will focus on different packing materials and designs. Also the
research will focus on the relationship between the combined value of the
packing coefficient of friction and the ratio of gland load forces. This data
could perhaps assist the industry in determining a better model for valve
friction calculations. Another facet of this testing will focus on live loading
spring heights after a loss of gland load being re-tightened to the original
heights for frictional concerns. Today it is important to utilize best available
packing technology that can enhance AOV/MOV operability without
sacrificing long-term valve sealing.
12. 2006
Conference: EGC Energy Conference
Paper Title: "Lessons Learned on Valve & Pump Packing or
What You Have Always Wanted to Know About Packing But
Were Afraid to Ask"
Bismarck, North Dakota January 25th
ABSTRACT
This workshop will cover all aspects of mechanical packing
including how to install and operate pump and valve packing
more effectively in all areas of the power industry. Also, the
subject of how to identify what packing materials should be
installed in what applications to make the equipment have a
longer MTBF and reduce the overall life cycle costs of the
equipment.
13. 2006
Conference: Ninth NRC/ASME Symposium on Valves, Pumps, and In-service Testing
Title: Nuclear Valve Packing Performance Testing
Washington DC, July 17th
Abstract:
One of the most important challenges in today's nuclear Valve arena is the balance
between packing performance and its frictional footprint.
We have undertaken a logical testing protocol to gather data on valve packing's
performance/friction values throughout a full steam thermal cycle. This testing will
focus on different packing materials and designs. Also the research will focus on the
relationship between the combined value of the packing coefficient of friction and the
ratio of gland load forces. This data could perhaps assist the industry in determining a
better model for valve friction calculations. Another facet of this testing will focus on
live loading spring heights after a loss of gland load being re-tightened to the original
heights for frictional concerns. Today it is important to utilize best available packing
technology that can enhance AOV/MOV operability without sacrificing long-term valve
sealing.
14. 2006
Conference: Valve World 2006 Conference & Expo
Maastricht, the Netherlands, November 7-9th
Title: Power Industry Valve Packing Performance Testing
Abstract:
One of the most important challenges in today’s Power Industry Valve arena
is the balance between packing performance and its frictional footprint. We
have undertaken a logical testing protocol to gather data on valve packing’s
performance/friction values throughout a full steam thermal cycle. This
testing will focus on different packing materials and designs. Also the
research will focus on the relationship between the combined value of the
packing coefficient of friction and the ratio of gland load forces. This data
could perhaps assist the industry in determining a better model for valve
friction calculations. Another facet of this testing will focus on live loading
spring heights after a loss of gland load being re-tightened to the original
heights for frictional concerns. Today it is important to utilize best available
packing technology that can enhance AOV/MOV operability without
sacrificing long-term valve sealing.
15. 2007
Conference: AOV Users Conference
Paper Title: "Enhanced Nuclear Valve Packing Performance testing"
Clearwater, Florida January 14th
ABSTRACT
Packing research and development is key to creating a long term leak free nuclear
valve program. Chesterton has undertaken a two year study of packing performance.
The research has focused on the relationship between packing construction, transfer
of gland loads, packing consolidation, and resulting stem friction. This paper will focus
on the following points:
-Extended study on utilizing live loading spring height consolidation in regards to
changes in stem friction.
-Show the critical relationship between gland stud condition and the gland stress
applied to a packing set.
-Long term sealablity testing.
-Friction calculation variables due to y factor assumptions.
Today it is important to utilize best available packing technology that can enhance
AOV/MOV operability without sacrificing long-term valve sealing.
16. 2007
Conference: Fluid Sealing Technology Interest
Group Meeting
Paper Title: "Nuclear Valve and Gasket Sealing"
Charlotte, NC February 6
17. 2008
Conference: AOV Users Conference
Paper Title: "Valve Packing Testing in Boric Acid"
Orlando, Florida January 14th
Joint presentation with Mike Pelletier
18. 2008
Conference: Boric Acid Corrosion Control
Working Meeting
Paper Title: "Valve Packing Challenges with Boric
Acid Valve Leaks"
Atlanta, Georgia January 16th
19. 2008
Conference: Fluid Leak Management Summer Meeting
Paper Title: "Re-torquing vs. spring assembly height to re-apply gland load "
Oakbrook, Illinois August 26th
Abstract:
In the nuclear industry today there are many circumstances when the first course of
action of a leaking valve is to re-apply the calculated torque value. In valves that have
been exposed to temperature the gland force that is created in re-torquing will not be
the same as the “initial” installation value.
This presentation will focus on the topic of re-apply gland load on valves in service and
discuss alternatives that will result in more accurate gland loading. One method that
will be discussed in depth is that of using live loading assembly heights as a
measurement of gland load applied. The presentation will review testing data and
analyze the bolt-anti seize relationship.
One goal of this discussion is to assist the nuclear industry in creating better
techniques to handle a loss of gland load. Today it is important to utilize best available
packing technology that can enhance AOV/MOV operability without sacrificing long-
term valve sealing.
20. 2008
Conference: CANDU Owners Group: Nuclear
Professional Valve Conference
Paper Title: "Chesterton / Valve Packing "
Mississauga Ontario, Canada December 8th
21. 2009
Conference: MOV Users Conference
Paper Title: "Decreasing packing friction by utilizing innovative
packing construction"
Orlando, Florida January 14th
Abstract:
In the Nuclear Industry stem packing friction is a real concern.
This presentation will focus on ways to reduce packing friction
by using innovative packing construction and a simplified
gland load formula. Laboratory testing on packing friction,
packing construction, and gland load matrix to achieve better
Valve performance will be discussed. Today it is important to
utilize best available packing technology that can enhance
MOV operability without sacrificing long-term valve sealing.
22. 2009
Conference: Fluid Leak Management Summer Meeting
Paper Title: "Flange Live loading – Advanced Technology for Flange
Sealing "
Oakbrook, Illinois August 26th
Abstract:
Bolted flange connections have been an area of concern in the nuclear
industry. A Bolted connection is a combination of many subsets
including gasketing, bolting, preload, and flange condition. This
presentation will focus on the engineering principles of using flange
live loading to result in a longer life by delaying the loss of preload on
the gasket. This presentation will also discuss all facets of a bolted
connection that could lead to premature failure of the joint including
torque procedures, anti-seize evaluation, and streamlined processes.
Also case histories of nuclear flange applications will be reviewed.
23. 2011
Conference: Fluid Leak Management Summer Meeting
Presentation Title: Galvanic corrosion and stem pitting in Valves –
The graphite connection
Oakbrook, Illinois August 26th
Abstract:
This presentation will focus on the connection between graphite valve
packing and stem pitting. Also it will go in detail how galvanic
corrosion is created and technologies that are used to resist it. There
are many different types of packing inhibitors and this presentation
will go in depth with the different options including Zinc and
Molybdates. This in depth explanation of the chemistry of stem
corrosion is important for fluid leak managers to understand to keep
valve sealablity high in a plant.
