离心泵采购是否只要满足采用的标准即可？ •api685 中有一些检验是可选项，在这些可选项中，通常是什么介质，扬程，压力，温度，或结构或其他情况会选择做下面的检验？比如热水泵什么情况下要做这些选项，大家畅所欲言吧？ when specified, the shop tests described in 8.3.4.1 through 8.3.4.7 shall be performed. test details shall be mutually agreed upon by the purchaser and the vendor. • 8.3.4.1 npshr test 8.3.4.1.1 npshr data shall be taken at each test point (4.3.3.2.1) except shut-off. 8.3.4.1.2 a 3 percent drop in head shall be interpreted as indicating performance impairment. 8.3.4.1.3 npshr at the rated point shall not exceed the quoted value (see table 7). dismantling to correct npshr requires a retest (see 8.3.3.4.2). • 8.3.4.2 complete-unit test such components as pumps, drivers, and auxiliaries that make up a complete unit shall be tested together. the com- plete-unit test shall be performed in place of or in addition to separate tests of individual components specified by the pur- chaser. • 8.3.4.3 sound-level test sound level tests shall be performed as agreed between the purchaser and the vendor. note: iso standards 3740, 3744, and 3746 may be consulted for guidance. • 8.3.4.4 auxiliary-equipment test auxiliary equipment such as control systems shall be tested in the vendor’s shop. details of the auxiliary-equipment test shall be developed jointly by the purchaser and the vendor. • 8.3.4.5 secondary containment/control system hydrotest when specified, the pressure integrity of the secondary containment system or secondary control system shall be verified by hydrotest using the same criteria as the pressure casing (reference 8.3.2). certification shall be provided by the vendor. • 8.3.4.6 secondary containment/control system instrumentation test when specified, the operability of the instrumentation sup- plied with the secondary containment system or secondary control system shall be verified. criteria for the test will be mutually agreed to by the purchaser and the vendor. certifica- tions shall be provided by vendor. • 8.3.4.7 pressure-temperature profile test when specified, the vendor shall demonstrate the pressure- temperature profile in the recirculation circuit using a fully instrumented pump unit of similar design to the specified unit. pressures and temperatures at critical points in the cir- cuit shall be measured with the unit pumping water. a pres- sure-temperature profile shall be developed as defined in appendix g, with data factored to correspond with the speci- fied fluid and service conditions. criteria for the test and data presentation shall be agreed to by the purchaser and vendor. 查看更多
第1天
关注盖德视界
添加小助手
