MVME177-013工控備件模塊
自初次檢驗之日或監管截止日期（以先發(fā)生者為準）起，要求不遲于每五年進(jìn)行一次復檢，但以下情況除外。如果管道或儲罐壁每年減薄一毫米或更大，或上述檢查確定的預期剩余使用壽命小于10年，則必須在剩余使用壽命的一半時(shí)對儲罐或管道進(jìn)行重新檢查。 對于地上輔助設備，檢查必須包括以下內容：檢查外露管道、接頭、焊縫和連接是否錯位和緊密。如果存在泄漏跡象，如絕緣材料損壞或變色或存在游離液體，則絕緣管道系統必須移除覆蓋物。必須檢查具有代表性的法蘭連接是否存在墊圈劣化和錯位；對具有代表性的管道截面進(jìn)行結構檢查，以確定其是否變薄、電偶腐蝕、晶間腐蝕、應力腐蝕開(kāi)裂、縫隙腐蝕、點(diǎn)蝕以及涂層失效和材料不相容的證據。必須識別可能由不同金屬連接產(chǎn)生的電偶電池和其他腐蝕源；任何連接地下喉管的氣密性測試；檢查和評估所有輔助設備，如壓力表、壓力/真空安全閥、安全聯(lián)鎖裝置、流量閥和泵的充分性、可操作性、泄漏、污垢、腐蝕、結垢和磨損。
必須測試泄壓閥的容量或打開(kāi)和重新密封壓力，并檢查是否發(fā)生腐蝕、結垢或結垢；以及識別可能因振動(dòng)、膨脹、收縮、霜凍、沉降、沖擊或其他原因導致泄漏的系統缺陷。對于容量為10000加侖或以上的地上儲罐，必須在合格工程師的指導下進(jìn)行檢查。工程師必須在下一次檢查和重新認證之前證明儲罐結構完好，且未受到可能導致泄漏的外部或內部腐蝕。如有必要，必須對所有可觸及的儲罐表面進(jìn)行檢查，檢查內容包括：6 NYCRR第598部分–2015年10月11日根據國家認可協(xié)會(huì )或獨立測試實(shí)驗室制定的一致規范、標準或實(shí)踐，清潔儲罐和儲罐內難以觸及的區域；（ii）按照所有適用的州、聯(lián)邦和地方法律，清除、運輸和處置固體沉淀物或積聚的污泥；（iii）檢查儲罐內部和外部的結構穩定性，并測試儲罐底部的焊縫和接縫的孔隙率和密封性。檢查員可使用以下一種或多種無(wú)損檢測方法：水壓試驗或真空試驗；染料滲透試驗；超聲波測試；射線(xiàn)照相或X射線(xiàn)檢測；磁粉探傷；或確定儲罐結構是否完好的任何其他等效測試。
From the date of initial inspection or the deadline of supervision (whichever occurs first), re inspection is required to be carried out no later than every five years, except for the following circumstances. If the pipe or tank wall is thinner by one millimeter or more per year, or the expected remaining service life determined by the above inspection is less than 10 years, the tank or pipe must be re inspected at half the remaining service life. For above ground auxiliary equipment, the inspection must include the following contents: check whether the exposed pipes, joints, welds and connections are misaligned and tight. If there are signs of leakage, such as damage or discoloration of the insulation or the presence of free liquids, the insulation piping system must be covered. The representative flange connection must be checked for gasket deterioration and dislocation; Structural inspection shall be carried out on representative pipe sections to determine whether they are thinner, galvanic corrosion, intergranular corrosion, stress corrosion cracking, crevice corrosion, pitting corrosion, and evidence of coating failure and material incompatibility. It is necessary to identify galvanic cells and other corrosion sources that may be generated by different metal connections; Air tightness test of any underground pipe connected; Check and evaluate the adequacy, operability, leakage, dirt, corrosion, scaling and wear of all auxiliary equipment, such as pressure gauges, pressure/vacuum safety valves, safety interlocks, flow valves and pumps.
The capacity or opening and resealing pressure of the pressure relief valve must be tested and checked for corrosion, scaling or scaling; And identify system defects that may leak due to vibration, expansion, contraction, frost, settlement, impact or other reasons. Above ground tanks with a capacity of 10,000 gallons or more must be inspected under the direction of a qualified engineer. The Engineer must demonstrate that the tank is structurally sound and free from external or internal corrosion that could lead to leakage before the next inspection and recertification. If necessary, all accessible tank surfaces must be inspected, including: 6 NYCRR Part 598 – clean the tank and the inaccessible areas in the tank according to the consistent specifications, standards or practices established by the National Accreditation Society or independent testing laboratories on October 11, 2015; (ii) remove, transport and dispose of solid sediment or accumulated sludge in accordance with all applicable state, federal and local laws; (iii) Check the structural stability of the inside and outside of the tank, and test the porosity and tightness of the welds and joints at the bottom of the tank. The inspector can use one or more of the following nondestructive testing methods: hydrostatic test or vacuum test; Dye penetration test; Ultrasonic testing; Radiography or X-ray testing; Magnetic particle inspection; Or any other equivalent test to determine the structural integrity of the tank.
