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Lesson 05 UG99_100_102_New2

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API 510 Preparatory Class Lesson 5 Hydrostatic, Pneumatic Tests (a) A hydrostatic test shall be conducted on all vessels after: (1) all fabrication has been completed, except for operations which could not be performed prior to the test such as weld end preparation…. (2) all examinations have been performed, except those required after the test…... UG-99 Standard Hydrostatic Test Page 80 Section VIII (b) Except as otherwise permitted in (a) above and 27-3, vessels designed
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  API 510 Preparatory Class Lesson 5 Hydrostatic, Pneumatic Tests  (a) A hydrostatic test shall be conducted on all vessels after: (1)   all fabrication has been completed, except for operations which could not be performed prior to the test such as weld end preparation….  (2)   all examinations have been performed, except those required after the test…...   UG-99 Standard Hydrostatic Test Page 80 Section VIII  (b) Except as otherwise permitted in (a) above and 27-3, vessels designed for internal pressure shall be subjected to a hydrostatic test pressure which at every point in the vessel is at least equal to 1.3 times  the maximum allowable working pressure to be marked on the vessel multiplied by the lowest ratio (for the materials of which the vessel is constructed) of the stress value S for the test temperature  on the vessel to the   stress value S for the design temperature…  Stress at Test Temp Stress at Design Temp UG-99 Standard Hydrostatic Test  (c)    A hydrostatic test based on a calculated pressure may be used by agreement between the user and the manufacturer….. A New and Cold Test relates to a statement in API 510. (d)   The requirements of (b) above represent the minimum standard hydrostatic test pressure required by this Division……   UG-99 Standard Hydrostatic Test
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