ABS海上浮式结构规范g.pdf

RULES FOR BUILDING AND CLASSING MOBILE OFFSHORE DRILLING UNITS 2001 NOTICE NO. 1 – January 2002 The following Rule Changes are EFFECTIVE AS OF 1 JANUARY 2002. PART 4 MACHINERY AND SYSTEMS CHAPTER 2 PUMPS AND PIPING SYSTEMS SECTION 1 GENERAL 7 Pressure Tests (2002) (Revise and add text as follows:) In addition to the testing and inspection of materials, as required in Chapter 3 of the Rule Requirements for Materials and Welding – Part 2, the following tests on the fabricated piping are to be witnessed by the Surveyor after bending and the attachment of flanges. Small bore pipes and tubes of less than 15 mm outside diameter may be exempted from the required hydrostatic tests. 7.1 Fuel-oil Service System Pressure lines are to be tested before installation to 1.5 times the design pressure of the system, but not less than 3.4 bar (3.5 kgf/cm2, 50 psi). 7.3 Fuel-oil Suction and Transfer Lines 2 Transfer systems and fuel-oil suction lines are to be tested before installation to 3.4 bar (3.5 kgf/cm , 50 psi). 7.5 Starting-air Piping Piping in starting-air systems is to be tested, preferably before installation, to 1.5 times the design pressure of the system. 7.7 Hydraulic Power Piping After fabrication, the hydraulic power piping system or each piping component is to be tested to 1.5 times the design pressure. ABS RULES FOR BUILDING AND CLASSING MOBILE OFFSHORE DRILLING UNITS 2001 1 Notice No. 1 – January 2002 7.9 All Piping After installation all piping is to be tested under working conditions. Where it is not possible to carr