”三查四定“怎么译? what is the pre startup safety review or pssr? the pssr is a safety review conducted prior to startup (commissioning) of a new or modified processing/manufacturing plant or facility to ensure that installations meet the original design or operating intent, to catch and re-assess any potential hazard due to changes during the detailed engineering and construction phase of a project. in other words, it ensures the “ready for start-up” status of process facility/units. a pre startup safety review covers not only equipment, but also procedures and training. pre startup safety review procedure/guideline is normally prepared as part of pre-commissioning/ commissioning documentation. 参考维基百科查看更多