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A=COM • If the cylinder or valve system appears to be in poor condition or has lost structural integrity, do not approach the cylinder. Observations indicating a cylinder is in poor condition may include: o Leaking, o Hissing sound, o Odor in vicinity of the cylinder, o Rusty components, o Bulging side wall or end, and/or o Corroded valve system. 4.10.2 If the cylinder is determined to be in poor condition, cordon the area off and limit access to necessary employees only. 4.10.3 Wear applicable PPE and approach the cylinder with the appropriate direct reading air monitoring instrument(do not approach from the ends of the cylinder),then determine the airborne contaminant concentrations in the immediate area. 4.10.4 Document cylinder information (e.g., visible markings, labels, placards, etc.). 4.10.5 Cylinders presenting potential deficiencies(e.g., dent, missing labels, valve protection cap cannot be removed by hand, corrosion, etc.)shall be tagged `Do Not Use', removed from use, and returned to the supplier. 4.11 Ground Transport of Compressed Gas Cylinders 4.11.1 AECOM will transport(drive/haul)quantities of compressed gases which do not exceed Materials of Trade(MOT)quantities,whereas the transport of placardable quantities is prohibited without the proper DOT/TDG licenses/credentials and consultation with the SH&E Manager. 4.11.2 Compressed gas cylinders in portable service are to be conveyed by suitable trucks, to which they are securely fastened.All gas cylinders in service shall be securely held in substantial racks or secured to other rigid structures so that they will not fall or be knocked over. 4.12 Air/Common Carrier Transport 4.12.1 All shipping of compressed gases via air/common carrier including instrument gases, regardless of quantity, shall be conducted by a qualified and trained HazMat Shipper(Level 1-2 Shipper)or jurisdictional equivalent, and shall conducted under the oversight of a designated DOT/International Air Transport Association (IATA)shipping specialist, or jurisdictional equivalent. Refer to S3AM-116-PR1 Hazardous Materials Shipping. 4.12.2 No compressed gas cylinder, regardless of contents or quantity,will be shipped via an external carrier vendor(i.e., UPS, FedEx, etc.)without the authorization of: • SH&E Manager, and • DOT/IATA shipping specialist. 4.13 Cylinder Color Coding Determination 4.13.1 The color coding of compressed gas cylinders is established by the Compressed Gas Association, which has assigned specific colors to categories or classes of chemicals/substances. It is important to note there is currently not requirement to adhere to this color coding scheme. 4.13.2 While recently manufactured cylinders reflect the color coding guidance established by the CGA, older cylinders may not reflect this nomenclature. It is also possible for cylinders to have been repainted a different color from their original. 4.13.3 Cylinder contents should never be determined by the color of the cylinder alone. Colors are not uniform throughout the compressed gas industry. Compressed Gases(S3AM-114-PR1) Revision 3 September 30,2020 PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET. 8 of 12