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What is Xenon?

  • Xenon is the number 54 element of the periodic table.
  • This element is odorless, whether in gaseous or colorless liquid.
  • This gas has a density of 5,8671 grams per liter (air = 1.29) and has a boiling point Is -108. 12 C. and melting point is 106.9C.
  • This gas is non-combustible, non-toxic, and chemically inert.
  • Fractional distillation of liquid air is called xenon.

Molecular Weight 131.3
steam pressure 100 K. Pa @ -108.15 0C
Gas density 5.472 Kg/m3 @ 21.1 0C and 1 atm
Latent heat of vaporization at boiling point (triple point) 17.6 KJ/Kg
Special heat capacity CP=0.269 KJ/Kg.0C

CV=0.096 KJ/Kg.0C

CP/CV=1.667

Critical temperature 16.60C
Critical pressure 5840 KPa(a)
Solubility in water 0.108 vol.(gas)/Vol.(Water) at 20 0C and 1 atm
Explosion / ignition range in air  Non-Flammable Gas

Material Compatibility of Xenon

METALS PLASTICS ELASTOMERS

Brass

CARBON STEEL

StainLess Steel

Alumium

Zinc

CoPPER

Monel

Kel-F

Teflon

Tefzel

Kynar

PVC

Polycarbonate

Viton® Buna-N Neoprene Polyurethane

O

Kalrez

GAS

S – Satisfactory for use with the intended gas
C – Conditional. May be incompatible under some circumstances or conditions Contact your Praxair representative for additional information
U – Unsatisfactory for use with the intended gas
I – Insufficient data available to determine compatibility with the intended gas
O – All nonmetalic, even those considered compatible, may be ignitable in oxygen enriched environments or in other oxidizing gases. Successful
use depends upon oxygen purity, pressure, temperature, cleanliness and elimination of ignition mechanisms. Please contact your Praxair
Representative for additional information

Classification of dangerous Products:

Dangerous Products Transport Information:

(For refrigerated liquid)   :UN 2591

IATA IMDG DOT
UN 2036 UN 2036 UN 2036 UN NUMBER
Xenon, compressed Xenon, compressed Xenon, compressed UN SHIPPING NAME
2.2 2.2 2.2 TRANSPORT HAZARD CLASS
NO NO NO ENVIRONMENTAL HAZARD

What is Krypton?

  • Krypton is a chemical element with the symbol of Kr
  • It has an atomic number of 36 and an atomic mass of 83.80, which has six stable isotopes and several radioactive isotopes.
  • Krypton is a noble gas Which has ranks fourth in the periodic table.
  • This colorless, odorless gas is 1.18 times heavier than air.
  • Krypton also combines with fluorine at the temperature of liquid nitrogen due to electrical discharge.

 

 

 

 

 

 

 

 


Molecular Weight 83.80
steam pressure 1 K. Pa @ -153.15 0C
Gas density 3.479 Kg/m3 @ 21.1 0C and 1 atm
Latent heat of vaporization at boiling point (triple point)  19.57 KJ/Kg
Special heat capacity CP=0.251 KJ/Kg.0C

CV=0.146 KJ/Kg.0C

CP/CV=1.69

Critical temperature 16.60C
Critical pressure 5840 KPa(a)
Solubility in water 0.0594 vol.(gas)/Vol.(Water) at 200C and 1 atm
Explosion / ignition range in air  Non-Flammable Gas

Material Compatibility of Krypton

METALS PLASTICS ELASTOMERS

Brass

CARBON STEEL

StainLess Steel

Alumium

Zinc

CoPPER

Monel

Kel-F

Teflon

Tefzel

Kynar

PVC

Polycarbonate

Viton® Buna-N Neoprene Polyurethane

O

Kalrez

GAS

S – Satisfactory for use with the intended gas
C – Conditional. May be incompatible under some circumstances or conditions Contact your Praxair representative for additional information
U – Unsatisfactory for use with the intended gas
I – Insufficient data available to determine compatibility with the intended gas
O – All nonmetalic, even those considered compatible, may be ignitable in oxygen enriched environments or in other oxidizing gases. Successful
use depends upon oxygen purity, pressure, temperature, cleanliness and elimination of ignition mechanisms. Please contact your Praxair
Representative for additional information

Classification of dangerous Products:

Dangerous Products Transport Information:

(For refrigerated liquid)   :UN 1970

IATA IMDG DOT
UN 1002 UN 1002 UN 1002 UN NUMBER
Krypton, compressed Krypton, compressed Krypton, compressed UN SHIPPING NAME
2.2 2.2 2.2 TRANSPORT HAZARD CLASS
NO NO NO ENVIRONMENTAL HAZARD

What is Argon?

  • Argon is one of the chemical elements denoted by Ar and It has an atomic mass of 18.
  • The third-largest gas in the atmosphere is argon (about %0.934 of air is argon).
  • Almost all of the argon in the air is the 40-argon isotope, while in the major argon space it is the 36-argon Isotope.

Other Information About Argon:

  • Argon belongs to the family of rare and inert gases of the periodic table.
  • Argon is a colorless, odorless, tasteless, and non-toxic gas that is completely inert and has no known chemical composition at room temperature, and it’s slightly soluble in water.

Molecular Weight 39.95
steam pressure 100 K. Pa @ -186.15 0C
Gas density 1.650 Kg/m3 @ 21.1 0C and 1 atm
The latent heat of evaporation at the boiling point 162.3 KJ/Kg
Special heat capacity CP=0.523 KJ/Kg.0C

CV=0.314 KJ/Kg.0C

CP/CV=1.67

Critical temperature -122.3 0C
Critical pressure 4906 KPa(a)
Solubility in water 0.056 vol.(gas)/Vol.(Water) at 00C and 1 atm
Explosion / ignition range in air Non Flammable

Material Compatibility of Argon

METALS PLASTICS ELASTOMERS
ALUMINUM CARBON STEEL CAST/DUCTILE IRON 304 STAINLESS STEEL 316 STAINLESS STEEL CUPPER BRASS POLY ETHYLENE POLY PROPYLENE NYLON PTFE – TEFLON PVDF PVC BUNA-NATURAL RUBBER NBR EPR-EPDM VITON
GAS A A A A A A A A A A A A A A A A A
Liquid D D D B C D C D D D C D D D D D D

A: EXCELLENT
B: GOOD
C: FAIR TO POOR
D: NOT RECOMMENDED

Classification of dangerous Products:

Dangerous Products Transport Information:

IATA IMDG DOT
UN 1006 UN 1006 UN 1006 UN NUMBER
ARGON , COMPRESSED ARGON , COMPRESSED ARGON , COMPRESSED UN SHIPPING NAME
2.2 2.2 2.2 TRANSPORT HAZARD CLASS
NO NO NO ENVIRONMENTAL HAZARD

What is Nitrogen?

  • Nitrogen makes the most layer of the atmosphere, which means that it’s include%78.08 of the air volume and %75.5 of the air weight.
  • Nitrogen gas is colorless, odorless, tasteless, non-toxic and almost neutral and colorless in liquid form.
  • Nitrogen is non-flammable and has no role in combustion. This gas combines with some active metals such as lithium and magnesium also a type of nitrate.
  • This gas has the ability to combine with hydrogen, oxygen and other elements at very high temperatures dissolve very little nitrogen in water and other liquids and is also a very poor conductor of electricity and heat.

Available nitrogen grades:

%99.9999 – %99.9995 – %99.999 – %99.998 – %99.99 – %99.9


Tanks and maintenance:

  • The gas-phase of Nitrogen can be transported and stored in pressurized Venice cylinders in trailer tubes.
  • Nitrogen in the liquid phase is transported and stored in small portable fluxes and cryogenic tanks

Compatible and incompatible materials:

  • Nitrogen is a neutral, non-corrosive gas that can be used in all systems made of ordinary metals.
  • At liquid nitrogen temperatures, carbon steels and many steel alloys lose their malleability.
  • Suitable materials for use in the presence of liquid nitrogen are stainless steel (eg types 304 and 316) and other alloys of nickel, chromium, copper, monel, brass and austenitic aluminum.
Molecular Weight 70.906
steam pressure 786.7 K. Pa @ 21.1 0C
Gas density 3.2127 Kg/m3 @ 0 0C and 1 atm
The latent heat of evaporation at the boiling point  288.08 KJ/Kg
Special heat capacity CP=0.48422 KJ/Kg.0C

CV=0.36 KJ/Kg.0C

CP/CV=1.334

Critical temperature 143.750C
Critical pressure 7977.5 KPa(a)
Ability to dissolve in water 0.7% vol.(gas)/Vol.(Water) at 0 0C and 1 atm
Explosion / ignition range in air Poison gas , Oxidizer

Material Compatibility of Nitrogen

 

METALS PLASTICS ELASTOMERS

Brass

CARBON STEEL

StainLess Steel

Alumium

Zinc

CoPPER

Monel

Kel-F

Teflon

Tefzel

Kynar

PVC

Polycarbonate

Viton® Buna-N Neoprene Polyurethane

Updating

Kalrez

GAS Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating Updating

 

S – Satisfactory for use with the intended gas
C – Conditional. May be incompatible under some circumstances or conditions Contact your Praxair representative for additional information
U – Unsatisfactory for use with the intended gas
I – Insufficient data available to determine compatibility with the intended gas
O – All nonmetalic, even those considered compatible, may be ignitable in oxygen enriched environments or in other oxidizing gases. Successful
use depends upon oxygen purity, pressure, temperature, cleanliness and elimination of ignition mechanisms. Please contact your Praxair
Representative for additional information

Classification of dangerous Products:

Dangerous Products Transport Information:

 

IATA IMDG DOT
UN 1017
UN 1017 UN 1017 UN NUMBER
Chlorine Chlorine Chlorine UN SHIPPING NAME
2.3,5.1 2.3,5.1 2.3,5.1 TRANSPORT HAZARD CLASS
NO NO NO ENVIRONMENTAL HAZARD

What is hydrogen?

  • Hydrogen is a colorless, odorless, tasteless, non-toxic and flammable gas.

  • This element is present in the form of gas at ambient temperature and atmospheric pressure.

  • This gas is known as the lightest gas and with a density of approximately %0.07 of air with an invisible flame of hydrogen in the presence of air with a blue flame is very faint and in many cases burns with an invisible flame.


Available hydrogen grades:

%99.9999 -%99.999 – %99.99 – %99.5


Tanks and maintenance:

  • Hydrogen gas is portable in cylinders, trailer tubes and pressure vessels.

  • Liquid hydrogen can be stored and transported at room temperature in multi-crusted cryogenic tanks for liquid hydrogen.


Compatible and incompatible materials:

  • Non-corrosive hydrogen gas at pure temperature can be in contact with ordinary metals.

  • Ordinary carbon steels lose their conductivity at the temperature of liquid hydrogen and become very brittle.


Suitable for standing to liquid hydrogen:

  • Austenitized nickel chromium (stainless steel), copper, copper-silicon alloy, aluminum, monel, and some brass and bronze alloys are suitable for exposure to liquid hydrogen.

 

Molecular Weight 2.016
steam pressure 100 K. Pa @ -253.13 0C
Gas density 0.08342 Kg/m3 @ 21.1 0C and 1 atm
Latent heat of vaporization at the boiling point 446 KJ/Kg
Special heat capacity CP=14.34 KJ/Kg.0C

CV=10.12 KJ/Kg.0C

CP/CV=1.42

Special heat capacity -239.960C
Critical pressure 1316 KPa(a)
Solubility in water 0.019 vol.(gas)/Vol.(Water) at 15.60C and 1 atm
Explosion / ignition range in air  Flammable Gas

Material Compatibility of Hydrogen

 

METALS PLASTICS ELASTOMERS

Brass

CARBON STEEL

StainLess Steel

Alumium

Zinc

CoPPER

Monel

Kel-F

Teflon

Tefzel

Kynar

PVC

Polycarbonate

Viton® Buna-N Neoprene Polyurethane

O

Kalrez

GAS

 

S – Satisfactory for use with the intended gas
C – Conditional. May be incompatible under some circumstances or conditions Contact your Praxair representative for additional information
U – Unsatisfactory for use with the intended gas
I – Insufficient data available to determine compatibility with the intended gas
O – All nonmetalic, even those considered compatible, may be ignitable in oxygen enriched environments or in other oxidizing gases. Successful
use depends upon oxygen purity, pressure, temperature, cleanliness and elimination of ignition mechanisms. Please contact your Praxair
Representative for additional information

Classification of dangerous goods:

Dangerous Goods Transport Information:

 

IATA IMDG DOT
UN 1049 UN 1049 UN 1049 UN NUMBER
Hydrogen, compressed Hydrogen, compressed Hydrogen, compressed UN SHIPPING NAME
2.1 2.1 2.1 TRANSPORT HAZARD CLASS
NO NO NO ENVIRONMENTAL HAZARD

Investigation focuses on cryogenic freezing system


An investigation into a liquid nitrogen leak at a poultry processing plant in Gainesville, Georgia, that killed six people is focusing on a cryogenic freezing system manufactured by Messer.

The US Chemical Safety and Hazard Investigation Board’s (CSB) work on the incident at the Foundation Food Group on 28 th January is ongoing, but the CSB has released some details in an update.

The incident at Foundation Food Group’s Gainesville Plant 4 occurred on Line 4, where chicken is processed, to include seasoning, cooking, freezing, and then packaging.

The system installed on Line 4 is a liquid nitrogen immersion-spiral freezer. The liquid nitrogen units were manufactured and installed by major industrial gases company Messer and are leased to the Foundation Food Group, according to CSB.

“CSB has confirmed that both the external and the interior elements of this system were manufactured by Messer,” CSB said in a statement.

“This includes the supply tanks outside, and the interior cryogenic freezing equipment on Line 4. Prior to the recent installation of this system, a different type of freezing equipment was used, which was ammonia-based. This equipment is still collocated on Line 4 adjacent to the cryogenic system and has not yet been removed.”

Liquid nitrogen was first used in Plant 4 in 2020 and some tools were found near an immersion freezer on Line 4, according to the CSB. The CSB understands that Line 4 was shut down on the morning of the incident “due to operational issues on the conveyor line”.

“We have since learned that unplanned maintenance was being conducted on Line 4,” the CSB statement said.

“The LN [liquid nitrogen] units were manufactured and installed by Messer and are leased to the Foundation Food Group. The plant had been experiencing unresolved operational issues on the chicken conveyor that appear to have resulted in the accidental release of liquid nitrogen in the flash freezing bath. Foundation Food Group maintenance personnel reported the computerised measuring system indicated a low liquid level in the immersion bath used to flash freeze the chicken products.”

The CSB continues to investigate the incident.

“Messer was notified the morning of Thursday, 28th January of several fatalities at Foundation Food Group (formerly Prime Pak Foods, Inc.) in Gainesville, GA,” Messer said in a statement to gasworld.

“Our hearts go out to the families of the deceased, and we express our sincere condolences. We understand that other employees and first responders were being treated at local area hospitals, and we hope for their speedy recovery. Messer has offered its full support to the Foundation Food Group team and is cooperating fully with the investigating authorities examining this tragedy.”

Source: gasworld

Linde and Hyosung Partner to Develop Hydrogen Infrastructure in South Korea


Linde company announced today that it has partnered with Hyosung Corporation (Hyosung), one of South Korea’s largest industrial conglomerates, to build, own and operate extensive new liquid hydrogen infrastructure in South Korea. This robust hydrogen network will support the country’s ambitious decarbonization agenda to achieve net zero emissions by 2050.

On behalf of the joint venture, Linde will build and operate Asia’s largest liquid hydrogen facility. With a capacity of over 30 tons per day, this facility will process enough hydrogen to fuel 100,000 cars and save up to 130,000 tons of carbon dioxide tailpipe emissions each year.

Based in Ulsan, the plants will use Linde’s proprietary hydrogen liquefaction technology which is currently used to produce approximately half of the world’s liquid hydrogen. The first phase of the project is expected to start operations in 2023.

Under the partnership, Linde will sell and distribute the liquid hydrogen produced at Ulsan to the growing mobility market in South Korea. To enable this, the joint venture will build, own and operate a nationwide network of hydrogen refueling stations.

“Hydrogen has emerged as a key enabler of the global energy transition to meet the decarbonization goals set out in the Paris Agreement,” said B.S. Sung, President of Linde Korea. “The South Korean government has set ambitious targets for hydrogen-powered fuel cell vehicles and the widespread, reliable availability of liquid hydrogen will be instrumental to achieving these targets. We are excited to partner with Hyosung to develop the hydrogen supply chain in South Korea.”

“Our partnership with Linde is a cornerstone of the development of South Korea’s national hydrogen economy and will advance the entire liquid hydrogen value chain across the country, from production and distribution to sales and services,” said Cho Hyun-Joon, Chairman of Hyosung Group. “We look forward to working with Linde to further reinforce and strengthen Hyosung as a leader in the global hydrogen energy transition.”

Linde is a global leader in the production, processing, storage and distribution of hydrogen. It has the largest liquid hydrogen capacity and distribution system in the world. The company also operates the world’s first high-purity hydrogen storage cavern, coupled with an unrivaled pipeline network of approximately 1,000 kilometers to reliably supply its customers. Linde is at the forefront in the transition to clean hydrogen and has installed close to 200 hydrogen fueling stations and 80 hydrogen electrolysis plants worldwide. The company offers the latest electrolysis technology through its joint venture ITM Linde Electrolysis GmbH.


About Linde

Linde is a leading global industrial gases and engineering company with 2019 sales of $28 billion (€25 billion). We live our mission of making our world more productive every day by providing high-quality solutions, technologies and services which are making our customers more successful and helping to sustain and protect our planet.

The company serves a variety of end markets including chemicals & refining, food & beverage, electronics, healthcare, manufacturing and primary metals. Linde’s industrial gases are used in countless applications, from life-saving oxygen for hospitals to high-purity & specialty gases for electronics manufacturing, hydrogen for clean fuels and much more. Linde also delivers state-of-the-art gas processing solutions to support customer expansion, efficiency improvements and emissions reductions.

 

Source: linde-engineering

Injection of hydrogen into blast furnace: thyssenkrupp Steel concludes first test phase successfully


thyssenkrupp Steel has successfully completed the first phase of hydrogen tests on “Blast Furnace 9“ in Duisburg. In recent months, several tests on one of the 28 tuyères of this blast furnace could be conducted, while complying with corona requirements, among them some long-term tests.

The company has gained important findings in these tests, enabling it to extend the tests to all tuyères in the next step and to transfer this technology to large-scale industrial use. The injection tests are part of the company’s climate strategy with which it intends to reduce its CO2 emissions by 30 percent by 2030.

Successful development: Tests confirm suitability for industrial use

On November 11, 2019, thyssenkrupp Steel was the first company globally to inject hydrogen into a blast furnace during operation. Hydrogen replaces coal dust as additional reducing agent. The goal is to reduce CO2 emissions – for unlike carbon, hydrogen does not react in the blast furnace to form CO2, but water.

The project is funded under the IN4climate.NRW initiative launched by the state government, is scientifically supported by the BFI research institute and supplied with hydrogen by Air Liquide.

A particular focus of the first test phase was on findings on plant technology with the use of hydrogen. To this end, injection of hydrogen was tested on one of the 28 tuyères of “Blast furnace 9” at the Duisburg site.

Based on continual data collection and analyses during the 24-hour tests, the team was able to gather extensive information, for instance, on the positioning of the hydrogen lance in the furnace, on flow and pressure conditions and on the interaction between elevated temperatures and plant technology. The collected data were used to optimize the hydrogen technology with each trial. It was also possible to reach the envisaged injection volume of about 1,000 m³ of hydrogen per hour in the tests.

Dr. Arnd Köfler, Chief Technology Officer of thyssenkrupp Steel: “The development of the hydrogen technology at blast furnace 9 is an important step in our transformation towards climate-neutral steel production. That way, we are able to reduce the CO2 emissions of the conventional coal-based blast furnace process significantly. We are very grateful to the state of North Rhine-Westphalia for funding this first trial phase, which has laid the foundations for the second phase now to come. This will then be followed by the next decisive step towards climate neutrality: The construction of direct reduction plants, which are purely hydrogen-based and can be operated completely without coal“.

Technical basis for extension to all tuyères completed

In the second test phase, the tests will be extended to all 28 tuyères of the blast furnace, thus paving the way for large-scale industrial use. The focus of research will then be on the impact of hydrogen technology on the metallurgical processes in the blast furnace. The second phase is scheduled to start in 2022, somewhat later than originally planned due to the corona pandemic. While the hydrogen for the first test phase was delivered by truck, a pipeline is required for the quantities of hydrogen needed for the second phase.

The Federal Government has held out the prospect of funding for the second phase as part of the real-world laboratory program.

A preparatory agreement on the supply of hydrogen to the blast furnace via Air Liquide’s long-distance pipelines has been concluded recently. Air Liquide was already a partner in the first project phase and intends – subject to funding approval – to invest in a new pipeline connection between the blast furnace and the existing hydrogen long-distance pipeline.

Gilles Le Van, Chairman of the Management Board of Air Liquide Germany: “thyssenkrupp, and Air Liquide are working together on a lighthouse project for the hydrogen society. Together we are pushing forward the decarbonization of steelmaking – with the aim of equally addressing climate protection and international competitiveness.

This is important for North Rhine-Westphalia, for Germany and Europe, and we are proud to make our contribution. Air Liquide brings more than 50 years of experience in the field of hydrogen to our joint project work with thyssenkrupp. We’ll build on that”.

Source: thyssenkrupp-steel

Nikkiso Cryogenic Industries Group Sells Turboexpander Business Line to Air Liquide


Nikkiso Cryogenic Industries’ Clean Energy and Industrial Gases Group (Group), a part of Nikkiso Co., Ltd (Japan), announces the sale of its Turboexpander Business Line to Air Liquide.

Located mainly in Santa Ana, California, the Turboexpander Business Line designs, manufactures and sells Turboexpanders within the industrial gas industry as well as the natural gas liquefaction industry.

Air Liquide is a world leader in gases, technologies and services for Industry and Health and has been the largest customer of the Nikkiso Group’s Turboexpander Business Line.

Nikkiso’s Cryogenic Service (NCS) unit will remain an authorized service company and will continue to provide Aftermarket Services, including repair and servicing of ACD designed and built Turboexpander machines while Air Liquide will provide service activities to its plants and its third party plants customers. This arrangement will guarantee all ACD service clients will continue to receive strong support going forward.

“We are confident the Turboexpander Business Line will continue to grow under Air Liquide’s management, and look forward to continuing to provide our services in favor of the entire ACD clientele with Air Liquide for a long time to come,” according to Peter Wagner, CEO of Cryogenic Industries and President of the Group.

The acquisition was effective January 1st, 2021.


ABOUT CRYOGENIC INDUSTRIES 

Cryogenic Industries, Inc. (now a member of Nikkiso Co., Ltd.) member companies manufacture engineered cryogenic gas processing equipment and small-scale process plants for the liquefied natural gas (LNG), well services and industrial gas industries. Founded over 50 years ago, Cryogenic Industries is the parent company of ACD, Cosmodyne and Cryoquip and a commonly controlled group of approximately 20 operating entities.

Source: nikkisoceig

Six People Die After Liquid Nitrogen Leak at Georgia Poultry Plant

You Can Watch the interview of the officials in the video below


Five people were found dead at a Foundation Food Group plant in Gainesville, Ga., and a sixth person died at a hospital, the authorities said.
At least 6 people died and nine others were hospitalized after a liquid nitrogen leak at a Foundation Food Group poultry plant in Gainesville, Ga., on Thursday.CreditCredit…Scott Rogers/The Times, via Associated Press
By Richard Fausset and Michael Levenson
• Jan. 28, 2021
GAINESVILLE, Ga. — A line carrying liquid nitrogen ruptured at a poultry processing plant in Georgia on Thursday morning, killing six people and injuring 11 others in an accident that union officials said raised serious questions about safety protocols at the plant.
Firefighters responded at 10:12 a.m. to a report of burns at the Foundation Food Group plant in Gainesville, Ga., about 55 miles northeast of Atlanta, Zach Brackett, a Hall County fire division chief, said at a news conference.
Once there, the firefighters found a “large contingent of employees that had evacuated, along with multiple victims that were in that crowd that were also experiencing medical emergencies around the facility,” Chief Brackett said.

Five people were found dead inside the plant, and a sixth person died after being taken to the Northeast Georgia Medical Center in Gainesville, according to Beth Downs, a medical center spokeswoman. The authorities did not release the victims’ names. Mexican government officials said that two of those killed were Mexican citizens.

“Preliminary indications are that a nitrogen line ruptured inside the facility,” said Nicholas Ancrum, the vice president of human resources at the Foundation Food Group.Credit…Scott Rogers/The Times, via Associated Press
Three others were in critical condition, and five, including one firefighter, were in fair condition, Ms. Downs said. Another three who had been taken to the hospital were released, she added. All those who were hospitalized had respiratory problems.
An additional 130 people were taken by school buses to a church for evaluation by medical personnel, Chief Brackett said.
Nicholas Ancrum, the vice president for human resources at the Foundation Food Group, said that a “tragic accident” had occurred at the plant, which had been called the Prime Pak Foods plant until it was taken over this month by the Foundation Food Group, a poultry company with headquarters in Gainesville.

“Preliminary indications are that a nitrogen line ruptured inside the facility,” Mr. Ancrum said at a news conference. “Those lost today include maintenance, supervisory and management team members. Every team member is equally important to us, and our hearts go out to their families and communities who have suffered such a devastating loss.”

Stuart Appelbaum, the president of the Retail, Wholesale and Department Store Union, which represents more than 15,000 poultry workers at facilities across the southern United States, called the deadly accident “a complete and utter tragedy.”
“Had simple safety protocols been followed today, workers’ lives wouldn’t have been on the line,” he said. “The egregious lack of standards at nonunion facilities like the one in Gainesville cost essential workers their lives today.”
The plant ran afoul of the Occupational Safety and Health Administration several times in the past few years. In 2015, it was fined more than $100,000 for about a dozen safety violations, according to records. The following year, it was fined more than $40,000 for violations.
In 2017, two employees underwent amputations, including one of two fingers after his left hand got caught in machinery that he was cleaning, according to records. The other worker lost four fingers on his right hand after it got stuck in a food mixer. In 2019, the plant was fined $3,750, records said.
Mr. Ancrum said that Foundation Food had immediately evacuated 130 employees after the leak and had taken steps to protect others and the surrounding area from exposure.
“Foundation Food Group takes workplace safety very seriously and works constantly to adopt and implement the most effective safety programs available to the industry,” Mr. Ancrum said. “Until this investigation is completed, we cannot say with confidence precisely how this accident occurred.”
Liquid nitrogen is often used in poultry plants to chill or freeze chicken after it has been gutted and processed, said Edgar Fields, the Southeast Council president of the Retail, Wholesale and Department Store Union.

But when it evaporates, the resulting nitrogen gas can fill a much larger space and can rapidly displace air and the oxygen essential to life, leading to an asphyxiation hazard, said Rick L. Danheiser, a professor of chemistry at the Massachusetts Institute of Technology. Because of its low temperature, liquid nitrogen also can cause cryogenic burns on contact, he said.
In poultry and meat plants, the seals on pressurized liquid nitrogen lines must be checked routinely for leaks, union officials said.
If it turns out that the plant was cutting corners to save costs, the company should be prosecuted, said Mark Lauritsen, the director of food processing, packing and manufacturing at the United Food and Commercial Workers International Union, which represents about 250,000 meat and poultry workers.
“This should never ever, ever happen,” given how dangerous the chemical is, Mr. Lauritsen said.
The nitrogen leak was one of several deadly industrial accidents in recent years.
In April 2010, 11 people died when an explosion ripped through the Deepwater Horizon drilling rig in the Gulf of Mexico, unleashing one of the worst offshore oil spills in the United States. In May 2020, 11 people in India died and hundreds were sickened after a tank containing styrene, a liquid used in making plastics, leaked, officials said.
Other recent industrial accidents have sent thousands fleeing from their homes.
In November 2019, 30,000 people in southeast Texas were evacuated after a pair of explosions rocked the Texas Petroleum Chemical plant. And in 2017, 21 emergency workers in Texas were treated for smoke exposure after Hurricane Harvey caused fires at the Arkema chemical plant.
The deadly accident on Thursday morning was silent, at least to one employee, Maria Bonilla, 60.
Ms. Bonilla, a Salvadoran immigrant who does not speak English, was working in the marinating department of the sprawling plant. She did not hear an explosion, or a crash or screams.

“We didn’t hear anything,” she said.
She knew something was wrong only when a supervisor came running in to her department saying that there had been an accident and that everyone had to get out.
She said she and other workers had evacuated and stood outside for more than an hour, terrified.
Ms. Bonilla, who has lived in the United States for 30 years, said that she had worked in the plant for eight years.
On Thursday evening, Ms. Bonilla was the sole worker in the parking lot, sitting in the driver’s seat of her white Chevy sedan. Her son Richie Alexis Santos, 29, had come to make sure she was OK.
“Honestly, I feel that she got blessed, she’s lucky,” he said. “Because nitrogen, you can’t see it. It’s a good thing it didn’t spread around the building or we probably wouldn’t be here right now.”
He added, “Definitely it’ll be more pressure on the companies to have a safer place to work at.”
The plant is one of many in Georgia, a top chicken-producing state, and in Gainesville, which has been called the poultry capital of the world because of its many processing plants.
The industry nationwide is known for paying workers low wages to work in freezing-cold plants, where they often stand shoulder to shoulder processing birds at a rapid clip, according to the Retail, Wholesale and Department Store Union.
Workers can encounter dangerous equipment, slippery floors and hazardous refrigerants like ammonia, according to the Occupational Safety and Health Administration.

Thousands of workers have also tested positive for the coronavirus, which has swept through meat- and chicken-processing plants, many of which stayed open last year when other businesses closed.
Mr. Fields said the plants in Gainesville employ many immigrants from Asia, South America and Africa.
On Thursday evening, the Foundation Food plant was eerily quiet. Part of the parking lot was roped off with police tape. Through a doorway it was possible to glimpse an empty room lined with blue smocks for workers, hanging on a rack. Through a window could be seen an empty break room with a few lunch sacks, backpacks and bottles on a folding table.
Gov. Brian Kemp of Georgia said in a statement that “our hearts are broken after hearing about the tragedy that took place at Prime Pak Foods in Gainesville this morning.”
He said he and his family had asked all Georgians “to join us in praying for the families facing a terrible loss and the other employees who are receiving medical care.”
Richard Fausset reported from Gainesville, Ga., and Michael Levenson from New Jersey. Miriam Jordan contributed reporting from Los Angeles, and Azi Paybarah from New York. Sheelagh McNeill contributed research from New York

Richard Fausset is a correspondent based in Atlanta. He mainly writes about the American South, focusing on politics, culture, race, poverty and criminal justice. He previously worked at the Los Angeles Times, including as a foreign correspondent in Mexico City.

Source: The New York times

 

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