Surge Analysis
Hydraulic studies are under taken in accordance with an agreed Scope of Work and are based on this procedure.
- Contract review and handover to assigned engineer in accordance with Quality Management Procedure to BS EN ISO 9001:1994.
- Engineering familiarisation with the project and study objectives with a review of available information.
- Client liaison, to discuss system philosophy and request any additional data required.
- Review of hydraulic design to evaluate compliance with current British Standards, Codes of Practice and manufacturers' recommendations.
- Computation of steady flow and pressure regimes to determine achievable flowrates for extremes of static and friction conditions, this being essential prior to investigation of unsteady conditions.
- Preparation of a mathematical model which represents precisely the system to be studied, with provision for amendment to incorporate additional surge suppression/relief equipment.
- Execution of computer simulations of upset conditions, deemed by appraisal as most severe, to determine the maximum and minimum surge pressures which are then compared with the system rating.
- If necessary, appropriate surge alleviation techniques are proposed, and sufficient computer simulations completed to optimise and verify an agreed method of suppression/relief.
- Ongoing reporting conveys preliminary results and recommendations and on completion of the study a Final Record Document is issued, which includes salient graphical results of computer simulations and full engineering recommendations.
- A full record of the study and the mathematical model are retained in accordance with the requirements of BSEN 9001:1994
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