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Safety Services Company-Safety Meeting Division, PO Box 6408, Yuma, AZ 85366-6408 Toll Free (866)204-4786 M614 Safety Services Company -This document may not be reproduced in any way without the express permission of Safety Services Company Name: ______________________________________ Workplace Location: __________________________________ Date: ________________Start Time: _______ Finish Time: _______ Instructor/Supervisor: ______________________________ Topic M614: Pressure-Treated Lumber Concerns Introduction: Wood is a common and widely used building material seen in many building projects. Wood and wood products exposed to the elements are subject to attack by molds, dry rot, decay fungi, and many assorted insects. Some buildings are built almost entirely of wood and measures must be taken to preserve the material in order to maintain structural integrity. Exposure to moisture is the primary cause of wood decomposition; however, in some geographic locations there are insects that will even attack dry wood used indoors. Pressure-treated lumber containing chromated copper arsenate (CCA) is currently being phased out under an Environmental Protection Agency (EPA) initiative. In the meantime, builders are beginning to hear concerns that the alternative chemicals used for preservatives in pressure-treated lumber may accelerate the corrosion of metal connectors and fasteners. Failure of connectors and fasteners would affect the structural integrity of a building. Workmen who handle wood building materials containing chemical preservatives must be aware of the hazards involved, and take the necessary precautions to safeguard their health. When cutting pressure-treated material, appropriate personal protective equipment must be used to defend against the toxic chemicals (especially arsenates, which are forms of arsenic) contained in some preservatives. Breathing protection should be used to keep from breathing chemically impregnated saw dust. Eye protection should be worn to avoid getting chemical containing particulates in the eyes. Hand protection is important when handling treated lumber as chemicals can be absorbed through the skin. Contaminated saw dust and wood scraps should be promptly and correctly disposed of. For many years, chromated copper arsenate (CCA) was used in a multitude of applications ranging from potentially mild to severe wood decomposition. It has been difficult to develop low toxicity, inexpensive replacements for CCA that can protect wood in such a broad range of applications. Manufacturers voluntarily agreed with the EPA to phase out CCA treated lumber for such residential applications as fences, decks, sill plates and playground equipment. The biggest fear was that small children could be exposed to arsenic poisoning on playground equipment constructed of CCA-treated lumber. With the CCA alternatives it will be more important to match the type of preservative, and its retention, with the intended application. Currently, these alternatives rely heavily on copper as their primary active ingredient. Do not assume that all “green-board or green-treated” wood perform equally or are treated with the same chemical processes. The type of preservative, retention, and quality of treatment determines performance. Following are wood preservative types being used to replace chromate copper arsenate: Acid Copper Chromate (ACC) — has been used occasionally as a wood preservative in Europe and the U.S. since the 1920s. ACC contains 32 percent copper oxide and 68 percent chromium trioxide. Alkaline Copper Quat (ACQ) — is one of several wood preservatives that has been developed in recent years as an alternative to CCA. The fungicides and insecticides in ACQ are 67 percent copper oxide and quat, 33 percent, a quaternary ammonium compound Ammoniacal Copper Citrate (CC) — is a recently developed wood preservative that uses 62 percent copper oxide as the fungicide and insecticide, and 38 percent citric acid which aids in the distribution of the copper compound within the wood. Ammoniacal Copper Zinc Arsenate (ACZA) — has been used commercially for two decades, primarily in western North America for treatment of Douglas-fir. ACZA contains 50 percent copper oxide, 25 percent zinc oxide , and 25 percent arsenic pentoxide. Copper Azole (CBA-A and CA-B) —is a recently developed preservative that relies primarily on amine (ammonia) copper, but it also includes a co-biocide to further protect wood from decay and insect attack. The first copper azole formulation developed was Type A (CBA-A), which contains 49 percent copper, 49 percent boric acid, and 2 percent Tebuconazole. More recently the Type B (CA-B) formula was standardized which contains 96 percent copper and 4 percent Tebuconazole. Copper Dimethyldithiocarbamate (CDDC) — is a preservative formed by reaction within the wood after treatment with two different chemical solutions. It contains copper and sulfur compounds. Conclusion: Recognize the potential health hazards associated with the chemical compounds contained in the above-listed preservatives (note AZCA, which contains a lot of arsenic). When using pressure-treated lumber, always use appropriate personal protective equipment. If you have small children and suspect pressure-treated lumber is exposed around your residence, apply a good coat of non-toxic paint to seal it. Employee Safety Suggestions and Specific Workplace Hazards: _____________________________________________________________________ ________________________________________________________________________________________________________________________________ Personnel Safety Violations: _______________________________________________________________________________________________________ Employee Attendance: (Names or signatures of personnel who are attending this meeting) ________________________________________ _________________________________________ _____________________________________________ ________________________________________ _________________________________________ _____________________________________________ ________________________________________ _________________________________________ _____________________________________________ ________________________________________ _________________________________________ _____________________________________________ ________________________________________ _________________________________________ _____________________________________________ ________________________________________ _________________________________________ _____________________________________________ ________________________________________ _________________________________________ _____________________________________________ Instructor’s / Supervisor’s Signature: _______________________________________________ Instructor’s initials: _______________ Date: _____/_____/_____ Time: _____:_____ AM / PM These guidelines do not supercede local, state, or federal regulations and must not be construed as a substitute for, or legal interpretation of, any OSHA regulations. ANSWERS TO EMPLOYEE QUIZ: 1) C 2) A 3) D 4) B 5) A

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Safety Services Company-Safety Meeting Division, PO Box 6408, Yuma, AZ 85366-6408 Toll Free (866)204-4786

M614 Safety Services Company -This document may not be reproduced in any way without the express permission of Safety Services

Company Name: ______________________________________ Workplace Location: __________________________________

Date: ________________Start Time: _______ Finish Time: _______ Instructor/Supervisor: ______________________________

Topic M614: Pressure-Treated Lumber Concerns Introduction: Wood is a common and widely used building material seen in many building projects. Wood and wood products exposed to the elements are subject to attack by molds, dry rot, decay fungi, and many assorted insects. Some buildings are built almost entirely of wood and measures must be taken to preserve the material in order to maintain structural integrity. Exposure to moisture is the primary cause of wood decomposition; however, in some geographic locations there are insects that will even attack dry wood used indoors. Pressure-treated lumber containing chromated copper arsenate (CCA) is currently being phased out under an Environmental Protection Agency (EPA) initiative. In the meantime, builders are beginning to hear concerns that the alternative chemicals used for preservatives in pressure-treated lumber may accelerate the corrosion of metal connectors and fasteners. Failure of connectors and fasteners would affect the structural integrity of a building. Workmen who handle wood building materials containing chemical preservatives must be aware of the hazards involved, and take the necessary precautions to safeguard their health. When cutting pressure-treated material, appropriate personal protective equipment must be used to defend against the toxic chemicals (especially arsenates, which are forms of arsenic) contained in some preservatives. Breathing protection should be used to keep from breathing chemically impregnated saw dust. Eye protection should be worn to avoid getting chemical containing particulates in the eyes. Hand protection is important when handling treated lumber as chemicals can be absorbed through the skin. Contaminated saw dust and wood scraps should be promptly and correctly disposed of.

For many years, chromated copper arsenate (CCA) was used in a multitude of applications ranging from potentially mild to severe wood decomposition. It has been difficult to develop low toxicity, inexpensive replacements for CCA that can protect wood in such a broad range of applications. Manufacturers voluntarily agreed with the EPA to phase out CCA treated lumber for such residential applications as fences, decks, sill plates and playground equipment. The biggest fear was that small children could be exposed to arsenic poisoning on playground equipment constructed of CCA-treated lumber. With the CCA alternatives it will be more important to match the type of preservative, and its retention, with the intended application. Currently, these alternatives rely heavily on copper as their primary active ingredient. Do not assume that all “green-board or green-treated” wood perform equally or are treated with the same chemical processes. The type of preservative, retention, and quality of treatment determines performance. Following are wood preservative types being used to replace chromate copper arsenate: Acid Copper Chromate (ACC) — has been used occasionally as a wood preservative in Europe and the U.S. since the 1920s. ACC contains 32 percent copper oxide and 68 percent chromium trioxide. Alkaline Copper Quat (ACQ) — is one of several wood preservatives that has been developed in recent years as an alternative to CCA. The

fungicides and insecticides in ACQ are 67 percent copper oxide and quat, 33 percent, a quaternary ammonium compound Ammoniacal Copper Citrate (CC) — is a recently developed wood preservative that uses 62 percent copper oxide as the fungicide and insecticide, and 38 percent citric acid which aids in the distribution of the copper compound within the wood. Ammoniacal Copper Zinc Arsenate (ACZA) — has been used commercially for two decades, primarily in western North America for treatment of Douglas-fir. ACZA contains 50 percent copper oxide, 25 percent zinc oxide , and 25 percent arsenic pentoxide. Copper Azole (CBA-A and CA-B) —is a recently developed preservative that relies primarily on amine (ammonia) copper, but it also includes a

co-biocide to further protect wood from decay and insect attack. The first copper azole formulation developed was Type A (CBA-A), which contains 49 percent copper, 49 percent boric acid, and 2 percent Tebuconazole. More recently the Type B

(CA-B) formula was standardized which contains 96 percent copper and 4 percent Tebuconazole. Copper Dimethyldithiocarbamate (CDDC) — is a preservative formed by reaction within the wood after treatment with two different chemical solutions. It contains copper and sulfur compounds.

Conclusion: Recognize the potential health hazards associated with the chemical compounds contained in the above-listed preservatives (note AZCA, which contains a lot of arsenic). When using pressure-treated lumber, always use appropriate personal protective equipment. If you have small children and suspect pressure-treated lumber is exposed around your residence, apply a good coat of non-toxic paint to seal it.

Employee Safety Suggestions and Specific Workplace Hazards: _____________________________________________________________________ ________________________________________________________________________________________________________________________________ Personnel Safety Violations: _______________________________________________________________________________________________________ Employee Attendance: (Names or signatures of personnel who are attending this meeting) ________________________________________ _________________________________________ _____________________________________________ ________________________________________ _________________________________________ _____________________________________________ ________________________________________ _________________________________________ _____________________________________________ ________________________________________ _________________________________________ _____________________________________________ ________________________________________ _________________________________________ _____________________________________________ ________________________________________ _________________________________________ _____________________________________________ ________________________________________ _________________________________________ _____________________________________________ Instructor’s / Supervisor’s Signature: _______________________________________________

Instructor’s initials: _______________ Date: _____/_____/_____ Time: _____:_____ AM / PM These guidelines do not supercede local, state, or federal regulations and must not be construed as a substitute for, or legal interpretation of, any OSHA regulations. ANSWERS TO EMPLOYEE QUIZ: 1) C 2) A 3) D 4) B 5) A

Safety Services Company-Safety Meeting Division, PO Box 6408, Yuma, AZ 85366-6408 Toll Free (866)204-4786

M614 Safety Services Company-este documento no puede ser reproducido en cualquier manera sin expresado permiso de Safety Services Company

Nombre de la Compañía: _______________________________ Localidad del Sitio de Trabajo: ___________________________ Fecha: _________ Tiempo al Empezar: ______ Tiempo al Terminar: ______ Instructor/Supervisor: ________________________

Tópico M614: Preocupaciones de Madera Curada con Presión Introducción: Madera es un material de construcción común y muy usado visto en muchos proyectos de construcción. Madera y productos de madera expuestos a los elementos son sujetos de ataques por moho, putrefacción, hongo, y un surtido de insectos. Algunos edificios son construidos casi totalmente de madera y medidas deben ser tomadas para preservar el material y mantener la integridad de la estructura. Exposición a humedad es la causa principal de descomposición de madera; sin embargo, en algunas localidades geográficas existen insectos que hasta atacan la madera seca utilizada adentro. Madera curada con presión conteniendo cromado cobre arsénicos (CCA) corrientemente está siendo eliminado bajo una iniciativa de la Agencia para Protección del Ambiente. Por mientras, constructores están comenzando de oír preocupaciones que los químicos alternativos para preservar madera tratada con presión pueden acelerar la corrosión de conectores y anclajes de metal. Falla de conectores y anclajes afectarían la integridad de un edificio. Los trabajadores que manejan materiales de madera de construcción que contienen preservativos químicos deberán estar atentos de los peligros involucrados, y tomar las precauciones necesarias para salvaguardar su salud. Cuando corte material tratado con presión, equipo de protección personal adecuado debe ser usado para salvaguardar contra los químicos tóxicos (especialmente los cuales son formas de arsénico) contenidos en algunos preservativos. Protección respiratoria debe ser usado para mantenerse de respirar aserrín preñada con químicas. Protección de ojos debe ser usado para evitar las particulares, conteniendo químicos en los ojos. Protección de manos es importante cuando manejando madera tratada como químicas pueden ser absorbidas por la piel. Aserrín contaminada y desechos de madera deberán ser propiamente y correctamente dispuestos.

Por muchos años, arsenato de cobre cromado (CCA) fue utilizado en una multitud de aplicaciones desde una descomposición de madera potencialmente leve a severa. Ha sido difícil desarrollar reemplazos de baja toxicidad y barato por CCA que puede proteger madera en un alcance grande de aplicaciones. Manufactureros voluntariamente accedieron con el EPA a eliminar madera tratado con CCA por tal aplicación residencial como cercos, cubierta, soleras inferiores y equipo para jardín de jugar. El temor más grande era que niños podían ser expuestos a envenenamiento de arsénico por equipo para jardín de jugar construido de madera tratado con CCA. Con las alternativas de CCA será más importante igualar el tipo de preservativo, y su retención, con la entendida aplicación. Corrientemente, estas alternativas dependen mucho en cobre como su primario ingrediente activo. No asuma que toda la madera “tabla-verde o tratada en verde” funciona igualmente o es tratada con los mismos procesos químicos. El tipo de preservativos, retención, y calidad de tratamiento determina desempeño. Siguiente son tipos de preservativos de madera siendo usado para reemplazar cromado cobre arsénico: Ácido de cobre cromado (ACC) – ha sido ocasionalmente como un preservativo de madera en Europa y los EEUU desde 1920. ACC contiene 32% oxido de cobre y 68% cromo trióxido. Cobre quat alcalino (ACQ) – es uno de varios preservativos que ha sido desarrollado en reciente años como un alternativo a

CCA. Los fungicidas e insecticidas en ACQ son 67% oxido de cobre y quat, 33% una mezcla cuaternario amonio. Amoníaca cobre citrato (CC) – es un recientemente desarrollado preservativo de madera que usa 62% oxido de cobre como el

fungicida e insecticida, y 38% ácido cítrico lo cual ayuda en la distribución de la mezcla de cobre dentro la madera. Amoníaca arsénico cobre zinc (ACZA) – ha sido usado comercialmente por dos décadas, primariamente en oeste Norte

América para tratamiento de abeto. ACZA contiene 50% oxido de cobre, 25% oxido zinc, y 25% pentoxido arsénico. Azole cobre (CBA-A y CA-B) – es un recientemente desarrollado preservativo que depende primariamente en amino de cobre,

pero también puede incluir co-biocida para mas proteger la madera de pudrirse y ataque de insectos. El primer azole cobre desarrollado era tipo A (CBA-A), lo cual contiene 49% cobre, 49% ácido bórico, y 2% Tebuconazole. Mas reciente la formula tipo B (CA-B) era estandarizado lo cual contiene 96% cobre y 4% Tebuconazole.

Cobre dimethyldithiocarbante (CDDC) – es un preservativo formado por la reacción dentro la madera después de tratamiento con dos diferentes soluciones químicas. Contiene cobre y una mezcla de sulfuro.

Conclusión: No es difícil a reconocer los potenciales peligros asociados con la mezcla química contenido en los preservativos mencionado arriba (nota AZCA, lo cual contiene mucho arsénico). Al utilizar madera tratada a presión, siempre utilice el equipo de protección personal adecuado. Si tienes niños pequeños y sospechas que madera tratado con presión esta expuesta alrededor de su residencia, aplica una buena tapa de pintura para sellarlo. Sugerencias de Seguridad de los Empleados y Peligros Específicos del Sitio de Trabajo:___________________________________________ ___________________________________________________________________________________________________________________ Infracciones de Seguridad del Personal: _________________________________________________________________________________ Empleados en Asistencia: (Nombres o firmas de personal presentes en esta junta) _____________________________________ _______________________________________ _____________________________________ _____________________________________ _______________________________________ _____________________________________ _____________________________________ _______________________________________ _____________________________________ _____________________________________ _______________________________________ _____________________________________ _____________________________________ _______________________________________ _____________________________________ Firma del Gerente/Supervisor: _________________________________________________________________________________________ Iniciales del instructor: __________ Fecha: __________Hora: __________ AM/PM Estas pautas no remplazan regulaciones locales, estatales o federales y no deben ser interpretadas como substitución, o interpretación legal de las regulaciones de OSHA.

RESPUESTAS DEL EXAMEN DEL EMPLEADO: 1) C 2) A 3) D 4) B 5) A