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AHCOM <br /> 4.21.4 The SH&E Manager shall be contacted prior to the decommissioning of compressed gas cylinders <br /> that contain or previously contained: <br /> • Ethylene oxide, <br /> • Arsine, <br /> • Diborane, <br /> • Hydrogen selenide, <br /> • Cyanogen chloride, <br /> • Amines, <br /> • Hydrogen sulfide, <br /> • Acetylene, or <br /> • Methyl mercaptan. <br /> 4.21.5 Additional safety precautions may be necessary due to highly reactive residues left behind by these <br /> substances. <br /> 4.21.6 The recommended methods of decommissioning include: <br /> • Burning/torch-cutting an elongated hole into the side of the cylinder, refer to <br /> S3AM-332-PR1 Hot Work,- <br /> Torch-cutting the cylinder in half; and <br /> • Crushing the cylinder. <br /> 5.0 Records <br /> 5.1 None <br /> 6.0 Attachments <br /> 6.1 S3AM-114-ATT1 Compressor Safety <br /> 6.2 S3AM-114-FM1 Compressed Gas Cylinder Inspection <br /> Compressed Gases(S3AM-114-PR1) <br /> Revision 3 September 30,2020 <br /> PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET. 12 of 12 <br />