1978-09-20 Regular Meeting - Laserfiche WebLink

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• ~J Honorable J. J. Meza, Mayor Page Tt~o September 18, 1978; entire life of the system. High and low pressure sensing shutdown devices are installed at alI of our pump stations to prevent or detect any ruptures. Block valves caill be placed at readily accessible points to give controls throughout the system. A summary of the tests and inspections performed before, during and After the construction of a new pipeline system is tabulated below: 1. A chemical ladle analysis is requested from the pipe mill of each heat of steel used in filling an order by Dow, The analysis so determined shall conform to the requirements specified in Par. 3.1 of the American Petroleum Institute, Spec. 5 LX. • 2. The tensile properties of the line pipe will canfarm to the tensile requirements specified in Table 4•. 1, APT Sr~c. 5 LX. 3. Longitudinal, transverse and weld tensile tests (which conform to the requirements of Paragraphs 4.6, 4.7 and 4.8 of the API Spec. 5 LX and ASTM A-370, "r:echanic.al Testing of Steel Products, Supplement II, Steel Tubular Products") are performed at the pipe mill on specimens front each lot of 100 lengths of pipe. 4. Flattening tests which conform to Paz'agrapii 4.14 of the API, Spec. 5 LX are made on the crop ends cut from each length of pipe produced at the mill. 5. A weld ductility test is performed at the pipe mill on specimens cut from each lot of I00 lengths, and the test must conform to Paragraph 4.20 of the API, Spec. 5 LX. 6. The weld seam of each length of pipe is nan-destructively inspected for cracks by the use of ultrasonic or electro- magnetic equipment which conforms to the inspection standards set forth in Paragraphs 7.10 - ?.13 of .the API, Spec. 5 LX. u 7. Each length of pipe will withstand, without leakage, a mill inspection hydrostatic test to at least a pressure of 2732 psi. and will be held for nat less than 5 seconds.