Chuck's Corner
AFE St. Louis Facilities Engineering Expert Members Helping Members
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What
is "Chuck's Corner"?
Reply: Chuck
?
What is "Chuck's
Corner"?
Reply:
Hi, I'm Chuck Mueller (CPMM), AFE St. Louis Chapter Treasurer and your host in
this forum. We wanted to do our discussion forum a little different than the
others you may find on the internet. This is a Members Only, online tool to get
your questions answered without getting on a mail list or having to wait weeks
for your reply. Please submit a question, and myself and/or other members will
give you an answer. To make this work, we ask that all members take part in this
forum, by responding to the emailed questions as soon as possible. With a little
humor and the collective knowledge of our chapter, we all will grow and have fun
doing it. Thanks Chuck
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Can I get some stucco repair advice on patching existing stucco?
BIN95's
Reply:
Hairline
cracks are very difficult to patch without making the repair more noticeable
than the defect. Some installers recommend "dusting" with stucco.
Cracks between 1 /8 to 1 /4 inch can be repaired by scraping out the topcoats to
expose scratch coat. An acrylic bonding agent can be used to help bond the
repair coats. On even larger cracks or holes, a self-adhesive fiberglass mesh
can be used to strengthen the repair.
Some
large holes will require the repair of the building paper behind the wire mesh.
For re-coloring old stucco a "fog" coat of cement, color pigment, and
lime, but no sand, is sometimes used. Acrylic additives increase ease of
application and cover. Elastomeric coatings can also be used to seal and recolor
old stucco.
Stucco
Repair ADVANTAGES:
Stucco
repair is relatively easy and cost-effective.
Stucco
Repair DISADVANTAGES:
If
large areas are affected, removal may be more practical.
Sto
Corp. - Sto Powerwall® offers high quality, durable Portland
Cement Plaster systems that include elastomeric coatings that expand and
contract with the building, bridging hairline cracks and preventing moisture
from getting into the wall. Sto Corp. supports the systems with warranties,
technical support, and local distribution. http://www.stocorp.com/
Click to see overview of Crack Analysis (http://www.buildinganalysts.com/newsletter/spring99.html)
Click
to see list of patching compounds
with MSDS
(http://www.custombuildingproducts.com/patching/patching_e.html)
Click
to see Stucco brief (http://www2.cr.nps.gov/tps/briefs/brief22.htm)
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Can you tell me where I can get a terrorism action plan for a non-profit
organization that works with community youth through charter schools and
counseling services.
Chuck's
Reply: FEMA Offers
Emergency Preparedness Guide. The Federal Emergency Management Agency prepared
the handbook to help people prepare for and respond to man-made disasters and
natural disasters. The guide includes 14 pages on terrorism and other related
disasters.
David's
Reply: On site visit (all sites) would be required to
see how the flow of traffic (personnel, guests, and vehicles) are handled
currently.
[Miller,
David M. CPT ARCENT-KU 11th Signal Bde] goes on to say ...
On site visit (all sites) would be required to see how the flow of traffic
(personnel, guests, and vehicles) are handled currently. The thought is to get
inside of the mind of a terrorist (to catch a thief, you must think like a
thief). You have to look at the different levels of threat (unlikely=normal
operations, possible=restrict access, limit route into area, limit entry into
facility, etc.,..., High = more restrictions (i.e. close facility, or minimize
personnel, visitors, etc.,...).
Where do people park their cars (how close to the building?) Do people check
their cars for foreign objects prior to getting into their vehicle? Handicap
personnel, are they being equally checked for things that someone may have
placed into their bags, behind wheel chairs, etc.,...
Security is a proactive process that involves everyone to include your
(honest) customer.
You have to determine what it is you want to protect (Facility, personnel,
etc.,). In the highest level of threat, what risks are you willing to take to
keep business running ( the goal of the terrorist is to inflict fear to the
point everyday activity ceases, and target loses the will to face another day).
To a terrorist, everything, and anything that can cause the majority to fear
leaving their own homes is a target they will use. Most of their targeting will
be towards icons that symbolize The American way of life and prosperity, Large
assembly areas (Sport Stadiums, Concert Halls, Political Conventions and
gatherings, Symbols that the world recognizes as American).
I don't know if this helps at all, or just re-enforces common
knowledge.
Dave”
(If you would like David to access your facility,
please contact the AFEStLouis.org webmaster and he will introduce you to David.)
BIN95's
Reply: Below are some references that may help.
[PDF]
Managing
Schools Under the Threat Terrorism
An Opportunity to ...
[PDF]
Terrorism
Response
[DOC]
Sidwell
Friends School
Disasters
/ Emergency Plans : Risk Management Internet Services ...
http://www.ed.gov/emergencyplan/resources.html
?
I need to measure the temperature of an aluminum block
sitting in a water.
Chuck's
Reply: I would contact a vendor that
specializes in temperature probes, such as the one below, and speak with one of
their engineers. They can help you select an appropriate mode for your
application. Once a specific model was selected, I'd remove the aluminum block
and take both the block and the probe to a local machine shop. They should be
able to machine a suitable well directly into the aluminum block.
http://www.thermalogic.com
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1
CMMS for both manufacturing maintenance and the office building maintenance?
I guess I will be the first to ask a question. :>)
While meeting with the Association for Facilities Engineering, a guest came to
me with the following two questions…
1. Is there a CMMS software package out there that works good
for both the manufacturing maintenance and the office building maintenance?
2. If yes to the above question, who are the best when it
comes to a package that works for both industries? by bin95
Reply:
I was able to answer yes to the first question, but had no idea who was
the top 5 for example that had a single software package that worked well with
both industries. :>) So I went to http://www.bin95.com/db_cmms.htm
to receive a non-bias answer. This was the reply... Thanks bin95
Reply:
As an independent consultant I try to steer clear of making general
recommendations on software. The selection of a CMMS package is very much an
individual requirement. All businesses and hence requirements, are different. In
saying that, there are many packages on the market that will double as
manufacturing and facilities software. Some vendors market different versions of
the same package.
The basic requirements are very similar, i.e. to help control the costs and
activities of the maintenance organization. At Perspective CMMS we are in the
business of software selection. There is plenty of free information on this on
our website at www.pemms.co.uk We can
also do an e-mail maintenance and selection audit anywhere in the world
(Geography is History!) but we have to make a small charge for this, (I've got
to eat!). Thanks Perspective
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2.
What would be the best lining for a hot water storage tank ?
What would be the best lining for a 375 Gal. Horizontal hot
water storage tank Use for potable water, Our three bids give me the following
choices, I would like to know what is the best ? Glass, Plasite coats, Copper
lining coated with epoxy or cement.
George's
Reply: A special cement lining is usually used in larger
tanks sometimes with an
epoxy coating, suitable for potable water contact, put over the cement.
These are usually the reconditioned tanks or regular steel tanks being
fabricated for potable water use.
The "made for hot water" tanks are usually glass, or smooth ceramic,
lined
at the factory.
My experience has been that no matter what the lining is you still need to
blow down on a very regular basis to keep the sediment form forming too
quickly. You can slow the build up but you will never totally stop it.
Bob's
Reply: Chuck, I have a few questions,
What is the water temperature we are dealing with 140 deg.?
Does the engineer have any cut-sheets on the products proposed?
How long can the tank be down for service?
Has the engineer considered replacing the tank with stainless steel?
What are the various prices for the fixes?
Is the contractor offering a warranty? How long?
Is this liner being considered because the tank is now leaking?
Is this tank a pressure vessel?
How are the tank penetrations going to be detailed?
Bin95's
Reply:
- Nu-Glass
Tank - The Nu-Glass
lining is a polymerized epoxy coating which is applied to the interior steel
tank surface. This lining has a high-surface hardness and is unaffected by
thermal shock from - 70ºF to 212ºF. Nu-Glass was designed for use as a
tank lining for potable water at elevated temperature up to 160ºF. It is
accepted by the U.S. Environmental Protection Agency and National Sanitation
Foundation for surfaces which contact potable water.
- Cement
Lined Tank - Cement
linings are applied 5/8” to ¾” minimum thickness. Cement lined tanks
have approximately the same coefficient of expansion as mild steel, it poses
no cracking potential due to internal pressures. The lining is applied in
two coats; first approximately ¼” thick to provide a firm base for the
second coat. After the second coat is allowed to partially set up, the
entire surface is brush dipped in water to remove any excess material. After
the tanks is completely lined, it is allowed to set for 12-20 hours immersed
in water, then drained, and flushed.
You may also find this document helpful ...
15625 Boiler Plant Mechanical Equipment
Epoxy: Sprayed on to a sand blasted
surface, epoxy linings have a durable, glossy surface. Typically lower in cost
than other linings, they offer excellent durability during shipping and handling
but can deteriorate if water temperatures of 200 f or more are encountered.
Glass: More correctly called
"porcelain enamel", glass lining is sprayed onto a sand blasted
surface, and then fired at 1500 f to fuse it to the tank interior. Although the
surface is smooth and continuous, minor imperfections are normal, and protected
by the installation of anodes. These deteriorate first, and must be checked
periodically and replaced when necessary. The glass lining can be damaged during
shipment, and the tank must be skidded for shipment.
Cement: The tank interior is coated with a
special blend of Portland cement to a thickness of .50" to .75", over
a welded wire mesh in larger sizes. The lining must be kept moist up to the time
the vessel is put into service to prevent cracking. Careful handling of the tank
is also necessary to avoid damage . If periodic inspections reveal damage or
erosion of the lining during service, field repairs can be carried out.
Plasite
Protective Coatings Inc. Since
1949, Plasite has manufactured, high-performance coatings for industrial
applications. Service environments include immersion, maintenance, secondary
containment, and marine.
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3.
What is the name of a preventive maintenance program can be fashioned to Public
office buildings ?
What are some Internet sources for a preventive maintenance
program that is a generic template that can be fashioned to Public office
buildings? (administrative, fire stations, libraries, etc. )
Reply:
We all discussed this question at our June meeting. The general consensus
was that Preventative Maintenance software (also known as CMMS)
should be a sound investment in a pre-packaged professional software. There are
hundreds of vendors to choose from, so there is no need to re-invent the wheel
by designing your own, on a spreadsheet for example. One of our ST. Louis AFE
Members recommended http://www.lillienco.com
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4.
We have a hardness that is (15N75). Can we change it to Rockwell?
Reply:
There are many hardness tests which measure hardness under different
experimental conditions (e.g. indenters made in different sizes, shapes, and
materials, and applied with different loads) and reduce their data using
different formulae. As a result, there is NO direct analytic conversion
between hardness measures. Instead, one must correlate test results across
the multiple hardness tests.
For reference and general conversion, please visit Efunda.com
http://www.efunda.com/units/hardness/convert_hardness.cfm?
This was the reply... Thanks bin95
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