Front-end engineering design

B. Process Hazard Analysis (PHA) during Front-End Engineering Design (FEED)... 

A feasibility study completed in 2011 identified a range of shut-down/start-up and other flare reduction opportunities for the QG2 and QG3 4 LNG mega-trains. A dedicated Flare Reduction Project was subsequently initiated in 2013 to implement these opportunities and study others identified by Asset Operations. The Flare Reduction Project is progressing to the Front End Engineering Design (FEED) phase and is tentatively eiqiected to become operational in the end of 4th Quarter 2015. 

Preliminary hazard analysis As already discussed in Chapter I (also Chapter III), this can be utilized during conceptual design, front end engineering design (FEED), or R D stage. As stated earlier, one of the major purposes of preliminary hazard analysis is to identify the extent or boundary limits of complex hazards and analyze the risks and hazards associated with all the processes involved (see Clause 4.0 of Chapter I). 

The first step in a new major project is overall concept design what do we expect the plant to look like A front end engineering design (FEED) project stage then develops an overall concept, including the definition of the plant hazards (i.e., what accidents are conceivable) and their necessary prevention and mitigation measures... 

Safety aspects of front end engineering design (FEED) QRA = quantified risk assessment ALARP = as iow as reasonably practicable. 

Safety integrity level (SIL) assessment is used during front end engineering design to develop the reliability requirements for control and protection systems. This is normally done in accordance with international standards such as EC 61508. This topic was discussed in Chapter 2. 

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