Question about effects of quick pipeline shut-down…

How are you predicting the effects of emergency shut-down scenarios on your pipeline networks?

I'm seeking some input on the tools you use to predict mechanical effects (hammering, etc.) from critical scenarios such as emergency shut-down.
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After doing a little research, I actually came across a webinar that will apparently cover these topics - looks like it's part 3 of a larger series. Here's the address, as it looks like it's open to the public:

http://www.flowmaster.com/webina ... _Part3_Webinar_Q310