LEARN ABOUT THE PREVENTION OF GAS-FUELED EXPLOSIONS …
Transcript of LEARN ABOUT THE PREVENTION OF GAS-FUELED EXPLOSIONS …
8TH EDITION, DECEMBER 2019 NUTEC BICKLEYNUTEC BICKLEY
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LEARN ABOUT THE PREVENTION OF
8TH EDITION, DECEMBER 2019
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SUCCESS STORY:RINGS OF FIRE
THANK YOU FOR ATTENDING
page 13OUR EVENTS
GAS-FUELED EXPLOSIONS AND FIRES
8TH EDITION, DECEMBER 2019 NUTEC BICKLEY
In this e-bulletin, the final one of the year, I would like to share some reflections on
what 2019 has meant for Nutec Bickley. Once again, I’m pleased to report that we
have had a good year serving our many customers by completing furnace and kiln
projects, retrofitting equipment and providing a wide range of technical services,
while not only maintaining our healthy financial position but in fact enhancing it.
However, what is equally important – if not more so – is the fact that during our
planning and strategy sessions earlier in the year, the company’s executive and
management team unanimously came to the conclusion that our path forward should
be to focus even more strongly on our customers, declaring our mission statement
to be: ‘To delight our customers with equipment performance, quality, execution and
service’. That sums us up. We are, and will be, about just that.
I can promise that everything we do will revolve around this mission. We are already in
the process of designing and implementing strategic actions with the aim of enhancing
each of the central principles underpinning this mission statement. Regardless of
how well we are meeting the challenges, and/or what positive results are already
being achieved, we will continue to improve – as that it why we exist as a company.
So, in conclusion, I’m happy with what we have accomplished this year, but more
important is how excited we all are here at Nutec Bickley about what we will be doing
in 2020, having you, our customers, as our reason to be.
EditorialDANIEL LLAGUNO, CEO
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8TH EDITION, DECEMBER 2019 NUTEC BICKLEYNUTEC BICKLEY
In an interview with our VP Combustion,
Controls & Services, Alberto Cantú, we talked
about the manufacture of Prevention of gas-
fueled explosions and fires.
MANUFACTURE OF PREVENTION OFGAS-FUELED EXPLOSIONS AND FIRES
Boiler burners, process furnaces and incinerators
must be properly protected against gas-fueled
fires and explosions in the event of some
combustion system failure.
For this reason, we usually find various
mechanisms being employed on the factory floor
as protection measures,
such as:
Remember – safety valves may fail
The National Fire Protection Association
(NFPA) has determined that the
automatic gas shut-off valve is the most
important safety device for protection
against possible explosions or fire
risks that could lead to the unplanned
interruption of various services or
operations in the plant.
Unfortunately, numerous combustion systems
rely entirely on a single manual-reset gas shut-
off valve to take the action required by safety
interlocks in the event of an emergency.
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Safety protocols
Fire-fighting equipment
Preplanned emergency procedures
Combustion system interlocks to automatically turn off the gas feed when hazardous problems occur
In the following article, we will talk to you
about what checks you should make to your
safety valves to prevent explosions caused by
possible gas leaks.
8TH EDITION, DECEMBER 2019 NUTEC BICKLEY
Although valve manufacturers create their
equipment as resistant as possible to various
elements such as dirt, damage and water, the
reality is that even the most expensive valve
is susceptible to failure, so in accordance with
NFPA 86 it is mandatory to have a second
automatic gas shut-off valve in series with the
first.
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Clean, close and seal the device components and wiring boxes, and lubricate the valves as specified by the manufacturer.
The only leads that should be allowed to remain are those in which a similar valve is in parallel.
Remove the wedges, cables or blocks that have been attached in order to keep the circuits closed or the valves open and remove the bridges unless the manufacturer’s wiring diagram specifies that they should be left inside.
1.Inspection of open side panels and covers on safety switches or gas shut-off valves
8TH EDITION, DECEMBER 2019 NUTEC BICKLEYNUTEC BICKLEY
4. Testing the flame monitoring system by simulating a flame failure
6. Checking the safety switch that protects against high pressure
3. Testing the action of the trip solenoid and the gas shut-off valve spring
5. Checking the safety switch that protects against low pressure
7. For all other security interlocks
Connect a rubber hose to a port in the pipe at the outlet of each valve.
Insert the open end of the hose into a glass of water and allow the flow of gas.
Bubbles coming out of the end of the hose indicate that the valve has not closed tightly.
Consult the NFPA 86 standard for the number of bubbles allowed.
Close the valve being tested, but allow supply pressure to be exerted on its upstream side; then close the valve downstream.
2.Testing your gas shut-off valves for leaks
When the pressure is too low to maintain a stable burner flame at the correct air/fuel ratio, close a manual valve upstream;
The gas shut-off valve should then close quickly.
Simulate the problem for which the device has been designed.
Verify that the gas shut-off valves close quickly.
When the pressure is too high to maintain a stable burner flame at the correct air/fuel ratio or is higher than the recommendations of the regulator and other system component manufacturers:
Adjust the value to the existing pressure to see if the gas shut-off valve trips.
Be sure to return the switch to its original set point after the test.
Close a gas tap upstream.
The gas shut-off valve should close in a few seconds.
This test can be performed at the end of the working day when the gas is turned off.
Disrupt the power supply to the solenoid with a simulated power failure.
It is not always possible to determine if the valve was closed by a sound or a built-in indicator; therefore, it is necessary to check the line pressure between the valve and the next resistance to downstream flow.
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8TH EDITION, DECEMBER 2019 NUTEC BICKLEY
RECOMMENDED SAFETY EQUIPMENT
The high costs of industrial accidents,
changing codes and constant improvements
to equipment make it vital for safety devices
to be checked frequently. Therefore we advise
you to use several distinct safety devices with
almost all combustion systems:
Emergency stop buttons at the exits or in the guardhouse to turn off the gas in the event of a potential fire.
At Nutec Bickley we have the latest technology
in combustion systems and our designs
comply with current regulations. Come and
tell us about your project so that we can help
you realize it with the support of the latest
technology available to the market.
Pilots interrupted when electronic flame monitoring systems are used; intermittent or constant pilots should not be used with flame monitoring, except in some special situations.
Electronic flame monitoring systems by means of safety relays.
High and low gas pressure switches; low air pressure switches.
Flow switches or other indicators of furnace recirculation air failure.
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8TH EDITION, DECEMBER 2019 NUTEC BICKLEYNUTEC BICKLEY
Box Furnace - burn-off type
· Location: Mexico
· Industry / Segment: Heat treatment of rotors
· Currently operating at customer’s facilities
· Operational Temperature: 620°C (1,150°F)
Bell Furnace
· Location: Mexico
· Industry / Segment: Annealing
· Currently installing at customer’s facilities
· Operational Temperature: 350°C (662°F)
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RECENT PROJECTS
8TH EDITION, DECEMBER 2019 NUTEC BICKLEY
Shuttle Kiln
Curing Oven
· Location: Belgium
· Industry / Segment: Refractories
· Currently operating at customer’s facilities
· Operational Temperature: 350°C (660°F)
· Location: Belgium
· Industry / Segment: Refractories
· Currently operating at customer’s facilities
· Operational Temperature: 680°C (1,250°F)
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8TH EDITION, DECEMBER 2019 NUTEC BICKLEYNUTEC BICKLEY
Nutec Bickley is exclusive authorized distributor of
Combustion and Control equipment brand Fives North
American in Mexico.
Fives North American designs and supplies a wide range of
combustion equipment and systems for industrial processes:
Adjustable Port Valves for hot or cold air, gas, oil, water, steam;
special materials available for other fluids.
Dual fuel burners have a wide range of capacities, control variety and
many applications.
They can be used for process, water and liquid asphalt Heaters. Also
useful for aluminum melters, dryers, boilers, incinerators, etc.
Gas burners and mixers are compact, with a flexible construction
for greatest ease of installation and can be mounted in any position.
VALVES AND VALVE OPERATORS
DUAL-FUEL BURNERS
GAS BURNERS AND MIXERS
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8TH EDITION, DECEMBER 2019 NUTEC BICKLEY
All Industrial Blowers in metal construction including mild steel, cast aluminum, or corrosion resistant stainless steel create a nearly indestructible blower.
Oxygen and oil burners have a superior luminous flame heat transfer with low oxygen pressure requirement, simple installation and low maintenance operation.
Fives North American Accessories include y-type strainers, metering orifice systems, igniters, pressure gauges, manometers, pressure switches, observation ports and more.
Accurately maintain a constant air/gas ratio over a wide range of firing rates in both nozzle-mix and premix gas burner systems. Molded diaphragms ensure excellent tracking, repeatability, maximum flows, and superior turndown.
INDUSTRIAL BLOWERS
OXYGEN BURNERS AND OIL BURNERS
ACCESSORIES AND COMPONENTS
FOR COMBUSTION SYSTEMS
REGULATORS
Fives North American’s TwinBed II® system recovers waste heat from furnace exhaust gases to preheat the combustion air to significantly increase efficiency over conventional burners or burners with recuperators during combustion process, obtaining a regenerative combustion.
TWIN BED II
RINGS OF FIRE
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8TH EDITION, DECEMBER 2019 NUTEC BICKLEYNUTEC BICKLEY
RINGS OF FIRE
Nutec Bickley has recently installed
another new rotary furnace at the Bensalem,
Philadelphia, USA plant operated by Specialty
Ring Products (SRP), the leading provider
of high performance quality forgings and
machining to the aerospace, defense, energy,
industrial and bearing industries. The furnace
will be producing steel ingots weighing
between 1kg and 23kg (2 lb and 50 lb), used
for the manufacture of alloy steel rings. These
billets are vertically loaded on to the hearth
at a rate of around 50 pieces per hour. SRP
produces seamless rolled rings and sleeves,
contoured rolled rings, and also forged discs.
Nutec Bickley’s Metal Furnaces business
unit was contracted by SRP to manufacture
and install the rotary furnace complete with
vertical lift doors, gas-fired combustion
system, PLC controls complete with I/O units,
and ancillary equipment. The furnace has a
total diameter of 3.5m (11.5ft), with hearth
diameter of 2.4m (8ft) and it operates in the
range 815°C–1175°C (1500°F–2150°F).
The Nutec Bickley design integrates the
latest concepts in order to provide this valued
customer with one of the most modern
furnaces available for the heat treating
process, and one that can operate effectively
over a very wide range of temperatures
yet that can maintain the required levels of
uniformity.
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SUCCESS STORY RINGS OF FIRE
8TH EDITION, DECEMBER 2019 NUTEC BICKLEY
Variable excess air control technique for homogeneous and excellent temperature uniformity without the need for circulating fans.
Superior quality high-velocity burners that produce high gas circulation and better heat transfer to product.
PLC with Honeywell HC900 interface, giving precise automatic control of heating, outputs for control zones and temperature via paperless recorder.
High limit temperature controller.
Flame safety system with UV sensor for each burner.
Automatic internal pressure control system to improve process stability (high temperature
resistance multi-louver with silicon carbide shaft dampers). The new furnace was manufactured and installed extremely quickly, thereby causing minimal disruption to operations at Bensalem.
Both sidewall and roof hot face insulation is
with Nutec’s own proprietary, ceramic fiber
HTZ MonsterModule system. High thermal
efficiency Monster Modules allow for faster
heating and cooling cycles.
Other notable features in the furnace’s
advanced design include:
SRP was founded back in 1890 and is a fourth generation, family-owned business that has remained
a leader in the forging industry. As customers’ requirements have become more exacting, SRP has
extended its capabilities and expertise and – as evidenced by this latest furnace installation – is
continually refining its processes to deliver the highest quality rings.
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“We are proud to have been chosen to design
and manufacture this very latest furnace and
play our part in the continued modernization
program at the Bensalem facility. The
efficiencies offered by every aspect of the
furnace construction will, I am sure, contribute
significantly to reduced operating costs at
the same time as maintaining the high quality
standards that SRP’s customers expect”,
commented Arturo Arechavaleta, VP Metal
Furnaces at Nutec Bickley.
8TH EDITION, DECEMBER 2019 NUTEC BICKLEYNUTEC BICKLEY
THANK YOU FOR ATTENDING
OUR EVENTSWATCH VIDEO
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8TH EDITION, DECEMBER 2019 NUTEC BICKLEY
Día de Muertos (Day of the Dead) is a well-known tradition, celebrated
on the second day in November throughout the country and by those of
Mexican heritage right across the world. Families and friends join together to
remember their loved ones who have died.
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DÍA DE MUERTOS
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There are many different ways to express love
for those who have passed on, one of which is
the creation of an elaborate altar. These altars
contain a group of symbolic elements: seven
levels, representing the stairway to Heaven; an
arch, representing the entrance to the world
of the dead; water to symbolize the purity of
the soul; incense to purify the environment;
pictures of those being remembered; bread,
food and fruit to feed the soul; salt to purify
the spirits; scented flowers to guide the soul
to the ‘world of the living people’; candles
to guide the spirit on its way home; colored
paper ornaments, representing joy; and a mirror
for the dead to check on their appearance.
In line with this widely celebrated
tradition, this year Nutec Bickley
staff organized an altar contest at the company’s
Monterrey headquarters. Employees from
various departments worked together, forming
three teams, to design and create special
altars which they then showed off to all their
colleagues. Additionally, photos of the three
altars were posted on the company’s Gente Nutec
Facebook page so that relatives and friends could
vote for their favourite. In the end, the winner was
the operations team, who demonstrated a great
deal of creativity and team spirit in this activity.
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8TH EDITION, DECEMBER 2019 NUTEC BICKLEY
WE HOPE YOU’LL JOIN US
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Ceramics Expo USA
Booth 438
Cleveland, OH
May 5 - 6, 2020
International Aluminum Extrusion Technology Seminar & Exposition
Booth 211
Orlando, FLMay 19 - 21, 2020
15th World Conference on Investment Casting & Equipment Expo 2020
Booth 423
Disneyland Hotel,Anaheim, CA
Oct 18 - 21, 2020
8TH EDITION, DECEMBER 2019 NUTEC BICKLEYNUTEC BICKLEY
CHALLENGEInstructions:Analyze the problem below and answer the question that appears at the end of the text.
Albert and Bernard just become friends with Cheryl, and they want to know when her birthday is. Cheryl gives them a list of 10 possible dates.
Possible Dates
Here’s the question: So when is Cheryl’s Birthday?
Get yourself featured in our e-bulletin
Answer this problem correctly and send your solution to [email protected]. We’ll publish the solution and a list of winners in our next edition.
Cheryl then tells Albert and Bernard separately the month and the day of her birthday respectively.
Albert: I don’t know when Cheryl’s birthday is, but I know that Bernard does not know either.
Bernard: At first I didn’t know when Cheryl’s birthday is, but I know now.
Albert: Then I also know when Cheryl’s birthday is.
May 15June 17July 14August 14
May 16June 18July 16August 15
May 19
August 17
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8TH EDITION, DECEMBER 2019 NUTEC BICKLEY
DO YOU NEED A QUOTE FOR ANY OF THESE SOLUTIONS?
Contact us at [email protected] and let us know about your project requirements so that we can respond effectively and as soon as possible. We look forward to hearing from you.