Engineering Projects
Case studies and project highlights from our consulting work.
GRP Cooling Water System
Feasibility Study Introduction A cooling water system consists of a large underground branched GRP piping system connecting to steel branch continuations at each U/G-A/G interface. In the detailed design phase the fitness for purpose of the GRP part of the system will be demonstrated by the GRP supplier by means
Tuning a piping model to vibration measurements
Vibrations had been seen in the piping of a reciprocating compressor plant and the operator of the plant was worried that fatigue cracks could occur. Therefore a study was conducted by DRG to determine how the vibration levels could be reduced and whether they were leading to stress levels exceeding
Pulsation dampener: computational vs analytical
Accumulators are used to reduce pressure pulsations from reciprocating pumps by adding volume to the piping. In the preliminary design stage the size and position of the accumulator needs to be determined before the piping design is completed. The performance of the system including the pump and connected piping is
Pulsation analysis: Important difference in solution methods
Commercially available pulsation analysis software uses either a transient (time domain) or harmonic (frequency domain) solver. A time domain solver is more accurate for determining the pulsation amplitude, but solving in the frequency domain can be orders of magnitude faster. Which solver should you use and why is there a
API 674 acoustical study, differences DA1 and DA2
When purchasing or delivering a reciprocating pump an API674 pulsation study might be required. The API 674 describes two different design approaches in Annex C (2010 edition). This post describes the most important differences between the design approaches and the pro’s and con’s between the two approaches. Regardless of the
Third-party review fiberglass EPC project Oman
Third-party review of fiberglass EPC project in Oman Dubai, 2 March 2017 DRG is probably best known for their large involvement in all facets of fiberglass design and engineering. It ranges from component design such as fittings and elbows for suppliers, qualification of the fiberglass products, engineering calculations as well
Infield inspections Oman
Infield inspections Oman – enhancing processes & performance July 2016 The link between assessment and performance As engineers, we are happiest when we are out in the field making our customers’ projects run more smoothly. DRG’s niche is the link between assessment and performance, and two projects in Oman recently