2019 RETA Breeze Mar-Apr

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RETA BREEZE REFRIGERATING ENGINEERS & TECHNICIANS ASSOCIATION MARCH / APRIL 2019

RETA: THE GOLD STANDARD

offering proven products for a truly integrated system the optimal cold service system

Polyguard supplies Dow® Styrofoam™ pipe insulation to the refrigeration market completing the Optimal old Service System. Major food producers in North America, who have been long-time users of Polyguard’s ReactiveGel® corrosion preventer in combination with Polyguard’s ZeroPerm® vapor barriers can now specify an entire insulation system to minimize downtime and extend the productive life of their low temp pipe installations. The optimal Cold Service System starts with RG-2400® gel on the pipe to prevent corrosion. Dow® Styrofoam™ insulation provides long-term stable R values and is the preferred product for low temp applications. Cover the insulation with either Polyguard’s ZeroPerm® or Insulrap™ vapor retarders to keep the insulation dry and then complete the system with Polyguard’s Alumaguard® family of flexible weatherproof cladding products. Polyguard can offer a truly integrated system that offers peace of mind and components that have been time-tested in the marketplace.

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Innovation based. Employee owned. Expect more.

BREEZE

2019 RETA NATional confrence Fast Approaching page 10

The RETA Breeze is the official publication of the Refrigerating

Engineers & Technicians Association (RETA). RETA is an international not- for-profit association whose mission is to enhance the professional development of industrial refrigeration operating and technical engineers. Don Chason Executive Editor 704-455-3551 Jim Barron Executive Director

jim@reta.com Sara Louber Senior Director, Office Operations

INSIDE THIS ISSUE

sara@reta.com Dan Reisinger Credentialing Manager dan@reta.com Peggy Wiederkehr Conference Manager peggy@reta.com Dan Denton Chapter Relations Manager ddenton@reta.com John Bento Education Manager john@reta.com

Message from the President..............4 Message from the Executive Director ............................6 Epic Win..............................................8 Clean as a whistle 2019 RETA National Conference...10 Fast approaching Compliance.......................................12 La Muerte de un Hombre… Service...............................................17 Milestones Mechanical Integrity........................18 Documentation Discrepancies

The Shade Tree Mechanic...............20 Volume XLI Child of Several Names...................22 RETA has a Southern Ancestry Chapters............................................24 RETA Chapter Meeting Schedule RETA’s Testing & ANSI Guru.........26 Testing Corner no. 12 Certification Honor Roll.................28

The information in this publication is based on the collective experience of industry engineers and technicians. Although the information is intended to be comprehensive and thorough, it is subject to change. The Refrigerating Engineers & Technicians Association expressly disclaims any warranty of fitness for a particular application, as well as all claims for compensatory, consequential or other damages arising out of or related to the uses of this publication. Publication of advertisements in Breeze , or any other RETA publication, does not constitute endorsement of any products, services or advertisers by RETA and shall not be considered or represented by advertiser as such. Copyright © 2019 Refrigerating Engineers & Technicians Association.

REFRIGERATING ENGINEERS & TECHNICIANS ASSOCIATION 1725 Ferry St. SW, Albany, OR 97322 Telephone: 541.497.2955 | Fax: 541.497.2966 RETA.com

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2018-19 BOARD OF DIRECTORS CHAIRMAN Eric Girven, CARO, CIRO, RAI Devault Refrigeration PRESIDENT Arlie Farley, CARO, CIRO Farley’s S.R.P., Inc. EXECUTIVE VICE PRESIDENT Vern Sanderson, CIRO, CRST, RAI Wagner-Meinert, LLC TREASURER Eric Teale, CARO, CRST Danfoss Industrial Refrigeration SECOND VICE PRESIDENT Keith Harper, CARO Tyson Foods DIRECTORS Troy Baker Independent Contractor Bengie Branham Perdue Farms William Ellena Coastal Pacific Food Distributors, Inc. David Gulcynski, CIRO Dot Foods Inc. Michael Hawkins Midatlantic Refrigeration, LLC Matt Hayes, CARO Wagner-Meinert, LLC Edward Johnson, CARO Schwans Global Supply Chain, Inc. Frank Kologinczak III Kolo Compression Bill Lape, CARO, CIRO, CRST SCS Engineers Pete Lepschat, CIRO, CRES, CRST Henningsen Cold Storage, Co. Jordan Reece, RAI Lanier Technical College Richard Veloz, Jr., CARO, CIRO, CRST C&L Refrigeration COMMITTEE CHAIRS Gene Dumas, CARO, CIRO, CRST, RAI Nominations SCS Tracer Environmental Dave Gulcynski, CIRO , Education Dot Foods, Inc. Jodie Rukamp, National Conference SCS Tracer Environmental Michael Hawkins, Membership Midatlantic Refrigeration, LLC Matt Hayes, CARO, Publications Wagner-Meinert, LLC Todd Metsker , Certification Parker Hannifin Corp - R/S Division Jim Barron, Executive Director

FROM THE DESK OF THE PRESIDENT

Let’s talk about awards. RETA has many awards that are presented at Conference, but the awards chairman Gene Dumas has to know who you think deserves one of these prestigious awards. If you don’t submit the nomination, no one knows who is deserving of these great accolades. I can tell you for a fact that I share an Elliot R. Hallowell award with my brother Jake and it is a huge honor to have not only been nominated, but to receive this award

RETA National President Arlie Farley that is shared with my brother and business partner. Awards are needed to recognize the individuals that go above and beyond in our industry. The award nomination form is available online at https://reta.com/page/awardnominations. Award nominations can be made for: Guy R. King Memorial – recognizing outstanding job performances in the education and training of members nationally and locally. Elliott R. Hallowell – honoring the member whose record of service to RETA for the current year merits special recognition and reward. Venneman – recognizing an outstanding RETA member for a career marked by leader- ship and service to the profession and organization. Felix Anderson – recognizing two individuals who have worked behind the scenes at Now since we are on the subject, if you know of a person or persons that you feel is ready to step up to the plate and serve membership as a Board Member, please pass that info along to National Chairman of the Board Eric Girven at girvene@epix.net. The Chairman is tasked with nominating the four incoming board members and the call up for an Executive Committee member. We are also always looking for volunteers for all the areas of RETA; Membership, Conference, Education, Certification, Publications and Marketing. And now a quote from comedian Christopher Titus “Step up or step aside!” the Chapter level and who have never been on the national Board. We already have one nomination submitted. What are you waiting for?

Best regards, Arlie Farley RETA National President

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AMMONIA TRAINING At the Tex Hildebrand Training Center - “That’s what we do!” The world of industrial refrigeration is changing and we are there to assist you to stay competitive in this environment.

We are a group of dedicated instructors specializing in the arenas of Anhydrous Ammonia and General Safety. Instead of asking what type of training we provide, tell us what you need and we will develop a training protocol to suit those needs. Our locations include Fort Wayne, IN; Van Buren, AR; Fort Worth, TX; Newark, OH and Nashville, TN; as well as RETA Headquarters in Albany, OR. We also provide offerings at two accredited facilities: Polk State College in Bartow, FL and Jones County Junior College in Ellisville, MS. Can’t make it to one of our locations? WE will come to you! When you think of training… think of the Tex Hildebrand Training Group at WMi .

www.wmi-safetyservices.com Questions? Call (260)399-2387 EMAIL: Registration@WMILLC.com

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FROM THE EXECUTIVE DIRECTOR Do your homework before you invest your hard-earned dollars in education

Hello RETA Membership, I am happy to report that RETA has just passed our annual ANSI assessment and ANSI PCAC has approved RETA’s Accreditation for another year. We revalidate every five years and have an annual every year that RETA must pass to remain ANSI Accredited. RETA has been continually ANSI Accredited since 2008. I would like to thank RETA’s certification committee, Dr. Ron Rodgers, Dan Reisinger and RETA staff for all their efforts in this ANSI accreditation venture. Without this great support group, we would not be able to be the Gold Standard in Industrial Refrigeration. Speaking of the Gold Standard • A certificate reflects completion of a training program. • Certification requires meeting “established criteria for proficiency or competency in a profession (ISO 17024) … (after) an assessment of an individual’s knowledge, skills and abilities.” RETA’s CARO and CIRO certifications have met ANSI/ISO/ IEC 17024 Standards since 2008. Currently no certificate program in industrial refrigeration meets any third-party criteria for quality. Most certificate programs meet no standards anywhere. Investigate any entity that claims to provide an Industrial Refrigeration certification. Identify the standards they have met. No program that issues a certificate without secure, fair and valid assessment of the knowledge and skills needed to operate industrial refrigeration systems safely and efficiently can ever be equivalent to the demands required to earn RETA credentials. RETA offers the only ANSI-accredited industrial refrigera- tion certification programs in the world. RETA’s CARO and CIRO certifications became ANSI-accredited credentials in RETA The Gold Standard

2008. RETA also developed Certified Refrigeration Service Technician (CRST) and Certified Refrigeration Energy Specialist (CRES) programs to meet ANSI Standards. These programs will meet the criteria to be ANSI-accredited as soon as the required number of candidates have taken these tests to document that they meet ANSI 17024 Standards.

RETA Executive Director Jim Barron

RETA started CRST certification in 2018 in response to industry demand for a service technician credential. CRES certification is currently being updated based on RETA’s new book, Industrial Refrigeration Energy Efficiency Handbook, which will be published soon. RETA’s ANSI accreditation of CARO and CIRO is recognized worldwide through international agreements that include Europe, Asia, Central and South America and the Far East. RETA also helped Australian food processors convert RETA training materials to SI units and is monitoring develop- ments with the Joint Accreditation System of Australia and New Zealand (JAS-ANZ). Work is underway to extend RETA credentials into other parts of the world when they are ready to meet and maintain ANSI 17024 Standards. ANSI also has accredited 50 sponsors of certificates in its Certificate Accreditation Program (ANSI-CAP). None of these sponsors offer training in industrial refrigeration. Nearly half focus on food handlers and food safety. The closest to industrial refrigeration is HVAC training in four states (ID, MD, MT, VA). That program also links to NATE HVAC training. All other certificate programs operate with no recognized criteria for evaluating program quality or the value of their training. They require no third-party evaluation or criteria for assuring that candidates have demonstrated the

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proficiency and knowledge required to work safely with complex operating systems or hazardous materials. RETA invites you to examine these programs carefully as you invest your training dollars. Only RETA requires candidates to demonstrate mastery of the skills and knowledge needed to operate refrigeration systems safely and efficiently in fair, valid and secure tests. RETA creden- tials have been internationally recognized since 2008.

RETA is the GOLD Standard in Industrial Refrigeration Certification. The RETA spring National Board meeting will be held on April 26th & 27th at RETA HQ in Albany, Oregon. The Association sends out a thank-you to all of the board members who selflessly give up their time to travel to Oregon to work on behalf of the Association. We also send out a huge thank-you to the employers of these board members who support their employees and the RETA mission statement. We are looking forward to taking care of RETA Association business. Have a great Spring and enjoy.

God Bless, JimBarron

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EPIC WIN

Clean as a whistle We all have seen plenty of bad photos. Now it is time to show your pride and submit good installs and pretty equip- ment for a chance to win some RETA Swag that HQ has sent me for prizes!!

Submit your photos along with a descrip- tion of it and I will pick a winner! If we use your photo in the Breeze, you will receive a RETA Swag pack! Make sure that you include the description and if you want to be recognized in the Breeze or not. I have been in many engine rooms that are cleaner than some restaurants I have eaten at during all of my years of traveling service man, so now it is time to show it off. Not limited to engine rooms or equipment. If you have photos of an Epic Fail please pass them on to nh3fail@gmail.com the names have been changed to protect the guilty! — Arlie Farley Farley’s Frigeration

Risk Management & Air Compliance

Ammonia Detection SystemCalibration OSHA Process SafetyManagement Operator I, II &PSM/RMP Training EPA RiskManagement Programs Mechanical Integrity Inspections

SCS Tracer Environmental Division

Compliance&Safety Audits StormWater &Spill Plans Compliance Tracking

Air Permitting SCSeTools®

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THE COMPLETE PACKAGE The MYCOM J-series Screw Compressor Package, with its innovative new rotor profile, has revolutionized the refrigeration industry. With standards such as hydraulic side valves to match system load, MYPRO TOUCH+ control panel to minimize learning curve, variable Vi for energy savings, and options for water, thermosyphon and liquid injection cooling, the J-series is truly the complete package.

CONTACT A SALES REP IN YOUR AREA www.mayekawausa.com/industrial-refrigeration/contact-us/ info@mayekawausa.com | (615) 773-2859

Higher efficiency lower operating costs KEY BENEFITS ■ Designed for decades of reliable service

■ High capacity and efficient design lowers refrigeration system operating costs ■ Simple, field maintainable design reduces downtime and in and out costs

are still operating as efficiently as they did when new. Our proprietary B3000™ carbon fiber vanes maintain constant contact with the inner cylinder wall, ensuring high efficiency over the life of the compressor. www.flsmidth.com

The original Fuller® compressor design, still going strong! FLSmidth’s Ful-Vane™ ammonia booster compressors deliver long-term savings when used as the low stage in a two-stage compression system. Many compressors installed as far back as the 1960’s

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CORNER CONFERENCE

2019 RETA National Conference Fast approaching

by Peggy Wiederkehr, Conference Manager

of manufacturer sessions will make this year one that is jammed packed with a lot of learning to be gained; and a lot of knowledge to be taken back to your workplace. Our hotel reservation site for the Rio All-Suites Hotel & Casino is now active and can be located on the RETA Conference page at https://reta.com/ page/2019-conference-hotel-and- travel. For guests that prefer to phone in their reservations, please call the Reservation Center at 888-746-6955 to secure your reservation and receive the special RETA rate of $169 per night/plus tax. Group name RETA, or reference the group code SRRET9. The registration portal is now open and you can register for Conference, guest program, Top Golf event, etc. You will also see we are offering the review courses over three days versus two days. We will have the CARO, CIRO, CRST, and Train-the-Trainer from October 6-8, 2019 and the CRES from

October 7-8, 2019. Sign up for a review course, stay for the Confer- ence, and take your exam all in the same week. There is no limit to what you can take away and accomplish at this year’s Conference. And lastly, a shout out and thank you for the following companies that have confirmed their support for the 2019 RETA National Conference. Without our Sponsors’ support, we would not be able to provide our members and industry with the educational experience and commitment to safety in the Refrigeration Industry.

Can you believe the 2019 RETA National Conference is only a little over six months out? The Conference Manage- ment team and the National Conference Planning Committee have been busy planning this year’s event. Our “Call for Abstracts” has been closed and the “ ...This year is jammed packed with a lot of learning to be gained; and a lot of knowledge to be taken back to your workplace. ” papers submitted are being reviewed and graded by our Technical Committee. This revised timeline for the technical program will let us share the 2019 RETA National Conference program with you by the beginning of May. The technical topics, new hands-on sessions, new workshops, Hot Points, and the addition

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Diamond Level Sponsors

Double Platinum Sponsor

Platinum Sponsors Airgas Specialty Products Colmac Coil Manufacturing, Inc. Evapco FLSmidth Inc. Frick Industrial Refrigeration Parts Guntner US LLC Howden Compressors Lanier Technical College

Logic Technologies, Inc. Logix Marking Services Inc. Mayekawa USA/MYCOM MIRO Industries Northwest Technical Institute Polyguard Products, Inc. Risk Management Professionals Inc.

RSCS Shambaugh & Son, LP Stellar Teikoku USA Inc. Vapor Armour Vilter Manufacturing LLC Wagner-Meinert LLC

Gold Sponsors

Bitzer US, Inc. C&L Refrigeration Danfoss Inc. Hermetic Pumps Inc.

ISEL, Inc. Kolbi Pipe Marker Co. Parker Refrigeration Valves & Systems

RSCS Summit

Silver and Bronze Sponsors Mericle Mechanical, Inc. Processing Cooling Magazine AC&R Specialists

ALTA Refrigeration Contractor Safety Data Draeger, Inc.

Hill Brothers Chemical Company Kerco, Inc.

Sponsorship? Interesting in sponsoring? It is not too late to become a Sponsor. We have many opportunities available for the 2019 RETA National Conference. Please contact either Peggy Wiederkehr, peggy@reta.com or Minette Reisinger, minette@reta.com for more information.

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COMPLIANCE

La Muerte de un Hombre… Un informe de la Investigación

LA INVESTIGACIÓN DEL DEPARTAMENTO LOCAL DE BOMBEROS DEL INCIDENTE INDICOL: El fabricante de helados, circa 1955, Modelo 11, número de serie 1323-311, involucrado en la explosión desarrollado una fuga en la válvula de drenaje unida a la trampa de aceite (acomulador). La fuga causo el Amoníaco anhidro para ser desechado en el aire mientras la máquina estaba en la operación. La máquina se uso mas recientemente para fábricar helados aproximadamente una semana antes del accidente. En la fecha del incidente, el Administrador de la planta se disponía a reparar la válvula con fugas sustitullendo o

Translated from the July 2006 Technical Report. To view the original Technical Report, visit the Technical Report library on the RETA website. Reimprimido de la edición de Julio de 1990 del informe técnicos de la RETA. El articulo sigue la investigación de un accidente fatal que involucra la explosión de una máquina de hela- dos. Los detalles que rodean este accidente siguen siendo oportunos y importantes y dignos de volver a examinarlos. Los informes de estos documentos fueron presentados por el departa- mento local de bomberos, La Policía Estatal y El Inspector del Distrito de Ingeniería. Estos informes aparecen como se escribieron origenalmente, con revisiones editorials menores. Aunque existen inexactitudes técni- cas y en consistencias entre los informes, las conclusions sobre la causa del accidente son correcta, Las inexactitudes técnicas se deben a la falta de experiencia, no habilidad. Los nombres de las personas involu- cradas se an sido retardados para proteger sus identificación.

conectando otra válvula al mal funcionamiento. Después de la explosión, la válvula de líquido (amoníaco liquido en el congelador), la válvula de succión (línea de retorno de amoníaco gaseoso) y la válvula de drenaje de la trampa de aceite se encontraron en la posición cerrada. Estas válvulas se habían cerrado la mañana de la explosión para aislar la máquina del sistema de refrigeración vegetal, prevenir el amoníaco anhidro adicional de entrar ala máquina. Cuando se produjo la explosión, el Gerente de la planta se encontraba en el lado izquierdo del congelador, en la zona donde se dirigía la fuerza de la explosión. Según los empleados en la sala en el momento de la explosión, el gerente de la planta había comenzado a desaguar el amoníaco anhidro de la máquina en una cuveta de plástico blanca lleno de agua, el procedimiento normal para purgar el recipiente de amoníaco. Se informó que el olor de amoníaco era bastante fuerte e irritante durante este procedimiento. Una línea de manguera de goma portátil se encontraba debajo de la máquina, el vapor fluyendo suavemente a la atmósfera.

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El amoníaco anhidro contenido en el recipiente se convirtió de un líquido, a un gas del cambio de temperatura de la máquina. Alcanzando el equilibrio a temperatura ambiente o superior con el calor de la línea de vapor. Este aumento

La ruptura de la alta-presión y la explosión de la combustión causaron daños enormes a la planta, posiblemente tan altos como $250.000. El Gerente de la planta lo encon- traron muerto y otros dos empleados en la habitación resultaron heridos. Los sistemas de mecanismo fueron destruidos en y alrededor de la zona de explosión. En el frente de las oficina, azulejos del techo

intento de eliminar el amoníaco. El jefe de bomberos proporcionó la información de antecedentes sobre la explosión y la policía habló con los dueños del negocio. Se informó que la explosión derrivo azulejos del techo en la oficina de recepción, desmontando los relojes de la pared y sopló las puertas delanteras abiertas. El jefe de bomberos dijo que un trabajador fue transportado al hospital con quemadu- ras en la cara y dos bomberos también fueron llevados al hospital después de ser sumergido por vapores o humo de amoníaco. Una hora después de la explosión, los vapores o humos del amoníaco seguían siendo demasiado grandes para entrar en el edificio con un dispositivo respiratorio. Fuera del edificio, los oficiales sintieron una quemadura de Según uno de los dueños del negocio, la víctima era un empleado de largo plazo. Se suponía que iba a cambiar una válvula con una leve fuga de amoníaco en una máquina de helados. El trabajador lesionado caminaba por el área de la máquina cuando ocurrió la explosión. Se dijo que otro trabajador caminaba por el vestíbulo cuando la explosión lo arrojó para tras y se encontró de una nube que iba hacia él. Dijo que la víctima había estado desaguando la máquina todo la mañana y el olor de amoníaco era muy evidente. Afirmó que la víctima desangrava la máquina todo el tiempo. El jefe de policía habló con dos traba- jadores que estaba en la escena. Cuando se le preguntó qué podría haber causado la explosión, una de las personas de servicio afirmó que una chispa del alambre eléctrico podría haber causado un flash y una explosión si el amoníaco estaba en el aire. Dijo que la víctima tenía experiencia usando el sistema. Cuando se le pide explicar cómo trabajar en la máquina de los ojos y presión en el pecho por el amoníaco. También causó un sabor metálico en la boca.

fueron perturbados, un reloj fue desmon- tado de la pared (detenido en el momento de la explosión) y testigos afuera informaron de el temblor de tierra y las puertas de la planta que volaron abiertas. La metralla de la máquina dañó una armadura y la parte inferior de la cubierta del techo de acero.

continuó en la temperatura aumento significativamente la presión en el recipiente, lo que condujo a una ruptura de alta-presión. No había válvula de alivio de presión en la máquina, y al parecer que el medidor de presión no estaba operando. Cuando se produjo la ruptura de la alta-presión, la liberación rápida de gas amoníaco anhidro combinada con una pequeña cantidad de aceite contenida en el sistema causó un incendio Flash con una explosión de combustión simultaneo. Se cree que la fuente de ignición proviene de arcos eléctricos causados por daños mecánicos a los cables que operan los controles del motor eléctrico y del congela- dor. Otra posible fuente de ignición, aunque una remota probabilidades, puede haber sido el calor por fricción de el rompimiento del metal de el recipiente.

DEPARTAMENTO DE SEGURIDAD PÚBLICA — INFORME POLICIAL ESTATAL

La policía estatal respondió a la escena de la explosión fatal. Un empleado trabajo en una máquina de helados en el área de proceso cuando esa máquina explotó, liberando amoníaco en el aire. Un médico declaró A la víctima muerto en la escena y su cuerpo aún estaba dentro del edificio cuando llegó la policía. Una vez que llegó la policía, la escena estaba asegurada y el Departamento de bomberos (que llegó antes) estaba usando ventiladores para ventilar el edificio en un

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La Muerte de un Hombre…. Un informe de la Investigación (continuado)

forma segura, el trabajador dijo que cerrar la válvula en el tubo de admisión de amoníaco, deje la válvula abierta en el tubo de salida hasta que todo el amoníaco se aiga evacuado de la máquina, luego cerré la válvula, no dejando amoníaco en la máquina. La policía entró en la escena del accidente para retirar la víctima. Estaba tirado de espalda a la izquierda de la máquina, que fue golpeado en su lado derecho. La caja de herramientas fue encontrada a su lado y sufrió una severa lesión en la cabeza. La máquina había explotado y se rompió una cámara fabricada con acero de 3/8 pulgadas. Esa cámara contenía el amoníaco usado para congelar el helado. La ex- plosión causó un hoyo a través del lado izquierdo de la máquina y la parte superior. Había un hoyo en el techo por encima de la máquina, aproximadamente 10 pies por 5 pies. Había una pequeña área de carbonización negro en el techo que indica algún tipo de incendio. Un inspector inspeccionó las válvulas de la máquina e informó que todas las válvulas estaban cerradas. Dijo que, si todavía había algo de amoníaco en la máquina, entonces la presión podría haberse

construido, causando la explosión. Otro inspector también inspeccionó la escena. Dijo que la válvula con fugas estaba situada en el lado derecho de la máquina y que la válvula estaba cerrada. Dijo que la válvula se utiliza para extraer aceite de la máquina. Comprobó y no encontró ninguna válvula de alivio en la máquina. El inspector de estado de refrigeración también inspeccionó la máquina y encontró los mismos hechos. La máquina era aproximadamente de 30 años de uso. El Departamento de bomberos no apagó la válvula de entrada o salida de la máquina ni sangró la válvula. El jefe de bomberos encontró una manguera de vapor y agua caliente procedente de la conexión en la pared, que estaba humeando debajo de la máquina. Uno de los Inspectores declaró que había visto previamente vapor utilizado en la máquina para derretir la acumulación de hielo alrededor de las válvulas y para calentar el aceite en la máquina para que se escurra más fácil. Una reunión para encontrar la causa de la explosión se llevó a cabo con la policía y los jefes de bomberos, y un experto local en refrigeración. Concluyeron que

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el amoníaco estaba atrapado en la máquina cuando todas las válvulas estaban cerradas. La manguera de vapor se usó de alguna manera durante el trabajo en la máquina, causando una acumulación de presión. La válvula de purgar se cerró y no había ninguna válvula de alivio en la máquina. Estos factores causaron una acumulación de presión que resultó en una explosión de alta presurización. Un incendio Flash ocurrió cuando el amoníaco y la mezcla de aceite se encendió por el arco de la conexión eléctrica cuando la máquina explotó, o por la ignición por fricción causada por la explosión. Uno de los trabajadores heridos recuerda haber visto un destello de color naranja durante la explosión. La víctima fue encontrada en el lado opuesto de la válvula en la que estaba trabajando, en el área del cierre de vapor. Es posible que la víctima iba a cerrar

nos reunió de nuevo en la oficina del Departamento de bomberos para seguir debatiendo nuestros hallazgos. Después, regresé a la escena del accidente y hablé con uno de los dueños y un Ingeniero de la compañía de seguros. También conocí al jefe de bomberos en su oficina y discuti- mos los acontecimientos de la explosión. La máquina de helados que explotó fue construida en 1950 y comprada por la compañía en 1952 de otro fabricante de helados que sale del negocio. La máquina tenía 6 pies de alto, 30 pies de ancho y 4 pies de largo, con una parte superior en forma de cúpula. Se cubrió con un acero inoxidable de calibre ligero en ambos extremos. el volumen total del sistema de amoníaco en la máquina era de unos cinco pies cúbicos. El amoníaco fue alimentado y agotado de la máquina a través de líneas aéreas a unos 10 pies del suelo. Las líneas de suminis-

explosión, la víctima y el trabajador lesionado salió de la sala de producción (sitio de la explosión), luego regresó. Al regresar al lugar del accidente, la víctima fue a la izquierda de la máquina cuando se

produjo la explosión. El trabajador lesionado estaba a unos 20 pies de distancia del congelador cuando explotó.

Cuando el departamento de bomberos llegó, el empleado lesionado fue retirado de la escena y los humos de amoníaco se disparsaron. El jefe de bomberos observó una manguera de goma negra que estaba conectada a una línea de vapor de Baja presión (aproximadamente 5 PSI). La manguera estaba emitiendo vapor bajo la máquina, que estaba acostada de costado debido a la violenta explosión. El Departa- mento de bomberos observó que la válvula aérea de amoníaco hacia y desde la máquina estaba en posición cerrada. La máquina estaba completamente aislada y el sistema de amoníaco no estaba protegido por una válvula de seguridad o cualquier tipo de mecanismo de alivio. El medidor de presión no tenía ningún vidrio o indicador en él. Los números en la cara del mecanismo estaban tan mal corrozidos que era extremadamente difícil de leer. El accidente ocurrió cuando el vapor fue dirigido sobre o debajo de la máquina. No sabemos si se utilizó para derretir hielo en la válvula de drenaje o para ayudar a evacuar el sistema. La acción de la víctima podría haber sido intencional o accidental. La temperatura del amoníaco fue levan- tada, lo que también conduce aumentar presión. Sin una válvula de seguridad, la presión en el sistema seguía aumentando hasta que finalmente superó el punto de explosion del buque de amoníaco resultando en una violenta explosión y matando a la víctima.

tro y de retorno se valían en un solo pie de estas líneas aéreas, que se Origenian en una sala de máquinas contiguo, la etrada estaba a unos 120 pies de distancia. La máquina no se

había utilizado durante aproximadamente una semana, pero la válvula de drenaje de aceite

la válvula de el vapor cuando ocurrió la explosión. Porque la víctima ha fallecido, no podemos decir de manera exactamente lo que a sucedido, pero los hechos dem- uestran que la víctima usó vapor en la máquina que causó la explosión de presurización y fuego del destello. INFORME DEL INSPECTOR DE INGENIERÍA DE DISTRITO Fui a la escena del accidente y hablé con los dueños, el jefe de bomberos, el mariscal de bomberos del estado, un inspector de la OSHA y un inspector de una compañía de refrigeración. Discutimos el accidente en general, desembolsar a, y luego

LA MUERTE DE UN HOMBRE

En la parte inferior del evaporador se había filtrado lo suficiente como para causar un olor de amoníaco alrededor de la máquina. Se ha tomado la decisión de sustituirla. Aproximadamente a las 9:30 a.m., la víctima comenzó a trabajar en la máquina. Antes de la

RETA.com 15

La Muerte de un Hombre…. Un informe de la Investigación (continuado)

COMENTARIO DE JIM MARRELLA

Para obtener más información sobre este tema y su prevención, se recomienda el siguiente material: la seguridad de la sala de máquinas (Publicada por RETA); Evitar fallas de componentes en sistemas de refrigeración industrial causados por presión anormal o choque, boletín no. 109 y criterios de seguridad mínima IIAR para un sistema seguro de refrigeración amoníaco (publicado por IIAR); y ANSI/ ASHRAE 15-1989, Código de seguridad para Refrigeración mecánica (publicado por ASHRAE).

Howden consistently minimize costs and downtime while extending the life of air gas handling equipment – including Screw Compressors . •OEM replacement parts •Repair and overhaul service •High performance Shaft Seal •On-site and remote support Preserving performance

La expansión hidrostática o la expansión de un líquido fue responsable de la muerte de la víctima. La expansión hidrostática se produce cuando un líquido, en este caso amoníaco, llena completamente o casi llena un volumen en-cerrado. Atrapado sin espacio para la expansión normal causada por las variaciones de temperatura, la presión puede exceeder en gran medida los de los gráfico de presión/temperatura del refrigerante, que son más familiares. Sólo unos pocos grados de cambio en la temperatura resultará en ciento o incluso miles de libras de cambio de presión. Es el propósito de este artículo para llevar a la vanguardia hidrostática expansión, con la esperanza de que la educación y la conciencia puede prevenir estos desastres en el futuro. Debido a que la expansión hidrostática son capaz de tener presiones extremas, se deben tomar medidas de seguridad para evitar su ocurrencias.

For compressor service and support, contact: Howden 1850 North Gravers Road, Suite 200 Plymouth Meeting, PA 19462 t: (610) 313 9800 f: (610) 313 9215 e: Sales: HCI.sales@howden.com Parts: HCI.parts@howden.com w: www.howden.com/compressors

© Howden Group Ltd. All rights reserved. 2019

16 RETA.com

SERVICE

Milestones

Recently, a very special meeting occurred in Fort Wayne, Indiana. Representatives of the Refrigerating Service Engineers Society (RSES), the Refrigerating Engineers and Technicians Association (RETA), andWagner-Meinert LLC. met to discuss the future of training. Participants included: RETA Executive Director, Jim Barron; RSES Executive Vice-President, Lori Schiavo; RSES International President, Nick Reggi, CMS, RCT; and RETA National Vice President, Vern Sanderson, CRST, CIRO, RAI. Wagner-Meinert LLC, offered to host the meeting as their training centers are now offering courses geared to both RSES members as well as RETA members. Common histories, and common goals earmarked the need for a coordination meeting between RSES and RETA.

A central theme was the need for additional and modernized training materials. Both organi- zations recognized a need to develop training materials for the small industrial / large commercial ammonia refrigera- common needs were identified. The possibility of forming a joint committee to begin the development process. Anyone interested in participating is encouraged to contact either RSES headquarters or RETA headquarters. tion applications. As the meeting continued other

Ven Sanderson and Nick Reggi standing next to a Frick 9x9

Frick Quantum HD panel mounted on a Frick rotary screw compressor equipped with thermosyphon oil cooling. This particular machine is used for hands-on instruction. In the background can be seen a Vilter 4412 12-cylinder reciprocat- ing compressor. The photo above is Nick Reggi and Vern Sanderson standing next to a Frick 9x9 (nine inch bore, nine inch stroke) vertical single acting compressor. An antique compressor from Vern’s collection. This machine, as well as several others from the Sanderson collection are currently on display at the Tex Hildebrand Training Center.

As additional regulations are enacted, RETA and RSES strive to adjust available exams to provide the certifications necessary to prove the qualifications of

their members. The need for ANSI certified exams as an option for some certifications were discussed. Currently RETA utilizes ANSI certifica- tion. Currently RSES does not. The needs of membership were utmost in everyone’s mind. The needs of our traditional members as well as the millennial service generation. Time was made to explore as well. The photo on the left shows Nick Reggi looking at

Nick Reggi looking at Frick rotary screw compressor

RETA.com 17

SAFETY

Mechanical Integrity Documentation Discrepancies

So, what needs to be done at this point? While having a new nameplate created and the tank recertified is an option, it is potentially more involved than a simple duplicate nameplate, as the manufacturer in question puts a duplicate nameplate on the exterior of the tank, while applying the original nameplate directly to the jacket underneath the insulation and outer shell. This drastically increases the work and cost involved with recertification if the original is not updated. At the very least, the original would have to be examined to determine if it was correct. So, are there any other options? Given that this modification was obviously done during manufacture and not after the fact, we can document the conversation with the manufacturer about the discrepancy and file it with our process safety information. With this particular issue, it is also important that the maximum intended inventory be reviewed to make sure that it is calcu- lated using the proper volume. While it is unlikely that such a difference in volume will change whether or not the system is covered under 29 CFR 1910.119 and 40 CFR Part 68, it is vital that your inventory calculations are as accurate as possible. The other interesting thing to note is that the product tank in question is 20 years old. During all of that time, nowhere was this discrepancy flagged. The takeaway from all of this is: Make sure that whomever is doing your MI audits is cross checking documentation against the physical equipment. Bill Lape is a Project Director for SCS Engineers: Tracer Environmen- tal Services. The opinions expressed within are solely his and do not necessarily reflect the opinions, policy or position of SCS Engineers or its affiliates. Bill is a Certified Industrial Refrigeration Operator and a member of the National Board of Directors of the Refrigerat- ing Engineers and Technicians Association.

By: William Lape When conducting mechanical integrity audits I always make it a practice to not only verify that pressure vessel U sheets and certification drawings are on file, but to cross check them against the physical equipment. This is a recommended best practice to help determine if there have been any modifica- tions made to the pressure vessel that may not have been properly certified. Recently, however, I happened upon a product tank with a refrigeration jacket that exhibited an unusual discrepancy. The nameplate, as shown above, indicated that the volume of the refrigeration jacket was 13 gallons. However, both the drawing and the U sheet showed that the refrigeration jacket had been expanded to cover the bottom of the tank, increasing the volume to 19 gallons (0.114 times the square foot area to get gallons for this manufacturer).

Note: only the relevant portions of the nameplate, U sheet, and drawing have been shown to protect the manufacturer, who shall remain nameless. At first, I simply assumed that the wrong U sheet or Certifica- tion Drawing was on file, but this assumption was proven wrong upon review of both the National Board Number and the manufacturer’s serial number.

18 RETA.com

Conference Countdown October 8-11, 2019 Las Vegas, Nevada There are some places in this country that are just worth coming back to and Las Vegas is one such a place. The National Conference was held here in 2016 and with the help of our Conference Manager and Conference Chairman we’re here again this year. It’s never too soon to begin making plans for a trip to the West Coast! ACCOMMODATIONS The Conference will take place at the Las Vegas Rio All-Suite Casino & Hotel. Every room is a spacious suite which features floor-to- ceiling windows with views of the Las Vegas Valley. EXHIBIT HALL AND SPONSORSHIPS Opportunities are still available! Contact peggy@reta.com for further details. EDUCATION PROGRAM This year’s schedule of presentations and hands-on activities are a mixture of tried-and- true and some great new topics. To view the program and register, visit www.reta. com/2019-conference- home

RETA.com 19

SERVICE

The Shade Tree Mechanic volume XLI

after a bad sermon. Momma don’t take to wastin her Sunday god time by listenin to a bad sermon. If the minister don’t end with “……or you’ll burn”momma has a tendency to get upset. You can tell because after a bad sermon, her prayers include something like “bless father Haden, he’s such a nice boy”. I’m sure god knows that means momma ain’t happy. But momma tries to do the right thing. I wish I was better at it. I know that I get annoyed and don’t always describe people in the most upbeat way. But I’m tryin to work on that this year. When someone at works upset me, I’m a gonna try to remember my departed momma and hopefully I can keep from referrin to them as a dumba**. I’m not sure I can pull it off, but I’m a gonna try. I think it would make momma right proud. The shade tree grows outside of the little town of Broughton, Ohio. Where everyone is always welcome, the beer is always cold, and something is always needin fixin.

I try to use the term“nice people” because my mama taught me that everyone is nice because they are made in the image of the lord. I remember one day I stopped at mamas and she offered me a sandwich. Unusual because mama don’t make no sandwiches, mama cooked. The only time my mama made sandwiches was when the meatloaf was five days old. But anyhow, she offers me this sandwich, and I says “sure, got any mustard?” I didn’t get this size, by turnin down free sandwiches. So she opens the refrigerator and takes out a store bought sandwich. I was plumb flubbergassed. So’s I ask, “mama wheerd you’ll get this sandwich”. “You remember Lisa Cooveley, her momma was a Hicks, bless her heart, and her daddy was never found. Well she works at the lunch counter at the center. She is such a nice girl”. My ears perked up. When my mama would meet someone that annoyed the he** out of her, she would refer to them as a “nice girl” or a “nice boy.”“She’s a nice girl” became a code word. You see I knowed that “She’s a nice girl”was mommas way of remindin herself that Lisa was made in god’s image and Momma shouldn’t be mad at her. But that usually meant, momma was pis=ed as he**. So I was plumb curious to hear where this sandwich came from, preferable before I ate it. There was no doubt I was a gonna eat it, heck, it’s a free sandwich, but I did want to know what I was gettin into.

So momma continued. “Well Miss Coove- ley, god bless her, kept insistin that I take one and I kept sayin no. Well, bless her heart, she must be hard of hearin because she kept askin and I kept sayin no until she finally shoved it at me. I took that sand- wich and so much grease ran out of it, that it plum ruined my Saturday go to church dress. There was so much grease on the floor I think the minister is praying for Brother Henry’s carpet cleaning company to offer to clean it. I couldn’t eat it causin all that grease upsets me stomach, but I didn’t want to throw it away cause I knowed you boys don’t get the cookin you should. I’m just glad you married a nice girl. But anyway, that’s how I come to get that there sandwich from Lisa. She’s such a nice girl” Wow, She’s a nice girl and a couple of bless her hearts. I was surprised momma didn’t cut a switch on her. There was no way I was gonna try to defend my wife against the cookin comment. Every husband learns that momma is always right, and every husband learns that their wife’s always right and when their wife and mother are together and arguin, the husband is scre**ed, But I gotta hand it to momma, instead of screamin and talking about how dumb Lisa was, momma tried to stay upbeat. She looked for the best in people when she could. She tried to use positive words. Don’t get me wrong, I’m not saying momma is a saint. I would bet that the ministers ears start burnin

20 RETA.com

RETA.com 21

MEMBERSHIP

Child of Several Names • • • RETA has southern ancestry

The organization known today as Refriger- ating Engineers & Technicians Association was born a rebel. During the Civil War, much of our country’s refrigeration activity took place below the Mason-Dixon line. The Confederate States, deprived of lake ice from colder northern regions, sought methods of producing ice mechanically to serve their hospitals, hotels, dairies, and meat counters. Here in the Confederacy, RETA’s birthplace, the production of cold took permanent root as a commercial enterprise. By 1869, a 60-ton aqua ammonia ice unit, the world’s largest refrigeration plant at this date, was assembled in New Orleans, La. It reduced the cost of ice from ten to two cents a pound. In 1885, just 25 years before the Practical Refrigerating Engineers Association, RETA’s ancestor, was organized at Texarkana, Texas-Arkansas, aqua ammonia absorption plants were being installed from Texas to South Carolina. No serious competition threatened ammonia absorption until David Boyle built the first successful ammonia compression plant at Jefferson, Tex., in 1873. Operating engineers preferred Boyle compressors driven by slow-speed Cor1iss engines. In the early 20th century, the use of direct

common technical problems. Usually, repre- sentatives of refrigeration equipment manufacturers and engineering college professors participated in these society sessions. Local organizations of this type were predominant in southern cities where competing ice plants and breweries employed from four to six engineers. On Jan. 20, 1910, leaders from the newly- formed refrigeration organizations of the Southwest met at Texarkana to form a professional association. Their first meeting place was just 69 miles from Jefferson, where Boyle operated his ammonia compression plant. 0. E. Morris of Henderson, Tex., was elected first president of the Practical Refrigerat- ing Engineers Association. J. J. Schrude of Waco, Tex., and J. B. Emery of Shreveport, La., became vice-president and secretary- treasurer respectively. These men drafted a constitution and organized the first annual convention. At this convention, held in Shreveport on Dec. 1, 1910, 44 members were accepted

together with eight associate and six honor- ary members. Three honorary members, Victor H. Becker, J. F. Nickerson, and H. W. Cole were to take an active part in expand- ing the influence of PREA. Through his columns in Ice and Refrigeration, Nickerson preserved the association’s history. Becker, a construction engineer for leading compressor manufacturers, provided technical papers at association meetings. At the 6th annual PREA convention, the association added “National” to its name, and the first meeting of the National Association of Practical Refrigerating Engineers was called to order at Alexander, La., on Nov. 21, 1916. In the words of a charter member, 1919 was “the year the rebels invaded the North.” On Dec. 4, 1919, NAPRE became a truly national association, holding its convention in “northern” Kansas City, Mo. NAPRE retained its name until the 53rd annual convention at Seattle, Wash., on Oct. 14,

1962 when the name, Refrigerating Engineers & Technicians Association, was adopted.

THE AUTHOR: Since publishing A Handbook of Steam Engineering in 1925, W. R. Woolrich, director of the AVI Publishing Co., has writtenmore than nine books on refrigeration history, engineering, and application. Here, he presents a brief historical sketch on the association of which he is national educational director.

expansion refrigeration systems in ice-making, meat refrigeration, cold

storage, beer making, and fish preservation grew rapidly. Engineers on these systems formed local societies, meeting to solve

ORIGINALLY PUBLISHED IN THE AIRCONDITIONING & REFRIGERATION BUSINESS/ OCTOBER 1 967/ RETA News Bulletin

22 RETA.com

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