MVME187-001B控制卡件
d對于電動和手動齒輪驅動截止閥，包括止回型截止閥，高壓關閉試驗應在用于確定操作器尺寸的設計壓差的110%下進行。e所有指定為雙截斷和排放閥的閥門都需要進行高壓關閉試驗。版權所有美國石油學會由IHS提供，經API許可證持有人=阿爾伯塔大學/5966844001，用戶=sam，albert未經IHS許可，不得復制或聯網，不得轉售，2013年6月28日16:13:35 MDT 6 API STANDARD 598 5.4高壓關閉試驗幾種閥門類型需要進行高壓關閉試驗，如表1和表2所示。對于根據表1和表2，高壓關閉試驗是可選的閥門類型，閥門仍然需要能夠通過試驗（作為閥門關閉結構設計的試驗）。當詢價請購單或買方要求時，應提供確認閥門設計能力通過高壓關閉試驗的試驗結果。試驗壓力計算見表4腳注b和c。5.5高壓氣動殼體試驗當采購訂單規(guī)定時，應進行高壓氣動外殼試驗。該試驗應在殼體試驗后進行，并采用適當的安全預防措施。氣動外殼試驗壓力應為38°C（100°F）或采購訂單中規(guī)定的最大允許壓力的110%。
不允許出現可見泄漏。5.6試驗流體5.6.1對于外殼、高壓后座和高壓關閉試驗，試驗流體應為空氣、惰性氣體、煤油、水或粘度不高于水的非腐蝕性液體。除非請購單中另有規(guī)定，否則測試流體溫度應在5°C（41°F）至50°C（122°F）的范圍內。5.6.2對于低壓關閉和低壓后座試驗，試驗流體應為空氣或惰性氣體。5.6.3當使用空氣或氣體進行關閉、外殼或后座試驗時，閥門制造商應能夠證明泄漏檢測方法的充分性。5.6.4用于任何試驗的水可能含有水溶性油或防銹劑。如果買方有規(guī)定，水中應包含潤濕劑。對于奧氏體不銹鋼閥門的測試，應使用氯化物含量不超過100 ppm的水。閥門制造商應能夠記錄氯化物含量。5.7試驗壓力5.7.1外殼試驗壓力應如表3所示。5.7.2其他試驗壓力應按表4所示。5.8試驗持續(xù)時間對于每種類型的試驗，所需的試驗壓力應至少保持表5所規(guī)定的最短時間。5.9試驗泄漏5.9.1外殼、閥桿密封和后座5.9.1.1對于外殼試驗，不允許通過壓力邊界壁和任何固定主體接頭目視檢測到泄漏。5.9.1.2對于后座試驗，不允許目視檢測泄漏。5.9.1.3對于帶有可調閥桿密封件的閥門，外殼試驗期間閥桿密封件泄漏不應成為拒收原因。
D For electric and manual gear driven globe valves, including check type globe valves, the high pressure closure test shall be performed at 110% of the design differential pressure used to size the operator. E All valves designated as double block and drain valves shall be subject to high-pressure closing test. Copyright American Petroleum Institute is provided by IHS. API licensees=University of Alberta/5966844001, users=sam, albert are not allowed to copy or network without permission of IHS, and cannot be resold. On June 28, 2013, 16:13:35 MDT 6 API STANDARD 598 5.4 High pressure closing test Several valve types need to be subject to high pressure closing test, as shown in Table 1 and Table 2. According to Table 1 and Table 2, the high-pressure closing test is an optional valve type, and the valve still needs to be able to pass the test (as the test of valve closing structure design). When requested by the inquiry requisition or the Buyer, the test results confirming that the valve design capacity has passed the high pressure closing test shall be provided. See footnotes b and c of Table 4 for the calculation of test pressure. 5.5 High pressure pneumatic shell test When specified in the purchase order, the high pressure pneumatic shell test shall be carried out. The test shall be carried out after the shell test and appropriate safety precautions shall be taken. The test pressure of the pneumatic enclosure shall be 38 ° C (100 ° F) or 110% of the maximum allowable pressure specified in the purchase order.
No visible leakage is allowed. 5.6 Test fluid 5.6.1 For shell, high-pressure backseat and high-pressure closing test, the test fluid shall be air, inert gas, kerosene, water or non corrosive liquid with viscosity not higher than water. Unless otherwise specified in the requisition, the test fluid temperature shall be within the range of 5 ° C (41 ° F) to 50 ° C (122 ° F). 5.6.2 For low pressure shutdown and low pressure backseat tests, the test fluid shall be air or inert gas. 5.6.3 The valve manufacturer shall be able to demonstrate the adequacy of the leak detection method when air or gas is used for closure, enclosure or backseat tests. 5.6.4 The water used for any test may contain water-soluble oil or rust inhibitor. If specified by the purchaser, the water shall contain a wetting agent. For testing austenitic stainless steel valves, water with chloride content not exceeding 100 ppm shall be used. The valve manufacturer shall be able to record the chloride content. 5.7 Test pressure 5.7.1 The shell test pressure shall be as shown in Table 3. 5.7.2 Other test pressures shall be as shown in Table 4. 5.8 Test duration For each type of test, the required test pressure shall be kept at least for the shortest time specified in Table 5. 5.9 Test leakage 5.9.1 Shell, valve stem seal and backseat 5.9.1.1 For shell test, it is not allowed to visually detect leakage through the pressure boundary wall and any fixed body joint. 5.9.1.2 For the backseat test, it is not allowed to visually detect the leakage. 5.9.1.3 For valves with adjustable valve stem seals, leakage of valve stem seals during shell test shall not be the reason for rejection.
