Abstract The most frequent completion method used in deepwater Gulf of Mexico is the use of gravel pack with sand screens. These are used to minimize and possibly avoid any sand production in the production system. Sand production from subsea wells tied back to a host can be a significant detriment to the integrity of the subsea infrastructure as well as the processing facilities at the host location. Hence, it is important to have effective sand control measures as well as reliable methods to measure sand, if produced. This paper discusses three case studies where sand production occurred even with sand control measures in place. The discussion is focused on the challenges associated with detection and quantification of produced sand as well as its impact on the subsea and topside infrastructure. The cases are for a dry gas well, a gas condensate well, and a black oil well. All three cases are subsea tie-backs to different host facilities. In these cases, the sand detection methods used are intrusive and acoustic type sand detectors, as well as centrifuge measurements of the produced fluids. The challenges associated with these methods are discussed in this paper. It is concluded that, at least in one instance, the acoustic device is reliable in identification of sand production but unreliable for quantification of the sand volume. In addition to produced sand measurements, inspection measurements which indicate wall loss of piping at the arrival of the fluids to the host facility are discussed. An attempt has been made to correlate the wall loss from inspection with erosional model predictions. It is concluded that the uncertainty in measured data is significant and, to pursue such a correlation, improvement in sensor reliability as well as accurate sand production data is required.