Abstract: A technique facilitates monitoring of a location susceptible to fatigue due to loading experienced along a subsea landing string or other subsea tubing string. Initially a location or locations susceptible to fatigue may be determined along the subsea tubing string. At least one sensor, e.g. a strain sensor, is placed along the tubing string proximate the location susceptible to fatigue. The strain sensor or sensors can then be used to collect data regarding loading incurred at the location. The loading data can then be used to determine fatigue at the location and/or at a device proximate the location.

Abstract: A technique facilitates fluid flow control with respect to a fluid flowing through a component of a landing string by avoiding or protecting mechanisms otherwise susceptible to debris. A valve is provided in a well component of a landing string and comprises a flexible element. The flexible element is oriented for flexing in an inward direction with respect to an internal flow passage through the landing string. The flexible element enables selective closing off of the internal flow passage without exposing certain types of mechanical mechanisms to fluid flowing through the landing string.