Abstract: A risk assessment project data store contains electronic records associated with risk assessment project identifiers. For each risk assessment project identifier, the data store includes a location and associated risk coverages. A risk relationship data store contains electronic records for parties having risk relationships with an enterprise. A back-end application computer server may associate a selected risk assessment project identifier in the risk assessment project data store with a selected party having a risk relationship with the enterprise. The computer server may then receive from a user an adjustment to at least one of the location and risk coverages associated with the selected risk assessment project identifier. A risk analysis is automatically performed based on the adjusted location and risk coverages along with information retrieved from the risk relationship data store and the risk assessment project data store can then be updated with a result of the risk analysis.

Abstract: A fiber-optic rotation sensor particularly adapted to be placed adjacent a drill head to measure the orientation of a drill string with respect to the axis of rotation of the earth during or after drilling for minerals such as oil and gas. The analog sensor is based on a Sagnac interferometer and uses light beams counterrotating in one or more oblong circular shaped coils of optical fiber in which dual phase modulators are used to generate an AC signal to enable detection of a rotation rate output. The sensor also includes means to mechanically or electrically flip to sensitive axis of the rotation sensor to null out bias drift. If one coil is used, the flipping is in 90.degree. segments. When two coils at 90.degree. to each other are used, they are flipped 180.degree..

Abstract: A fiber-optic rotation sensor particularly adapted to be placed adjacent a drill head to measure the orientation of a drill string with respect to the axis of rotation of the earth during or after drilling for minerals such as oil and gas. The analog sensor is based on a Sagnac interferometer and uses light beams counterrotating in one or more oblong circular shaped coils of optical fiber in which dual phase modulators are used to generate an AC signal to enable detection of a rotation rate output. The sensor also includes means to mechanically or electrically flip the sensitive axis of the rotation sensor to null out bias drift. If one coil is used, the flipping is in 90.degree. segments. When two coils at 90.degree. to each other are used, they are flipped 180.degree..