APPENDIX H – Check Valves
Surge Analysis and the Wave Plan Method
Supplementary Material: Example Problems and Solutions
Appendix H – Problem 6
H.6 Some design engineers of surge protection systems propose increasing the pressure rating of pipes within pump stations well above the model-predicted values while maintaining the pressure rating of pipes outside the pump station at the model-predicted values. The reason(s) for this could be:
i. Personal choice
ii. Long-standing practice and thus no specific reason
iii. To account for the uncertainties associated with check valve modeling assumptions and the absence of dynamic check valve characteristics for verifying modeling assumptions
iv. Lack of precision modeling tools that account for detailed pipe network layout within the pump station
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