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| 2.5.1 Material Change Guidance This section provides guidance on what constitutes a material change. However, it is the responsibility of the petroleum undertaking to form a judgement as to whether a proposed alteration to an activity that is the subject of an approved safety case is material or not. A change will be material if it affects the basis of an approved safety casein relation to the operation, design, management, risk, required risk reduction measures or other matter in respect of the designated petroleum activity to which the safety case refers. A material change may occur at anytime in the lifecycle of petroleum infrastructure or designated petroleum activity. Changes that are considered to be material fora Design Safety Case or a Production Safety Case include, but are not limited to The maximum number of stated persons on board in the safety case increases The minimum number of persons required to carry on the designated petroleum activity decreases Anew jacket is added to an offshore installation Anew hydrocarbon pipeline enters or exits an onshore Facility Anew hydrocarbon riser enters or exits an offshore Facility The route of a pipeline changes outside of a previously defined pipeline corridor The operating pressure of a pipeline exceeds the pressure originally notified A different hazardous fluid is transported by a pipeline Anew hazard is introduced or has been identified Anew Safety Critical Element is required or one is removed Anew or altered well on an existing site that enters a previously unexploited reservoir There is a change in well use Changes to well or formation connection by fracture stimulation Changes in material specification for well components and There is a change to the method of petroleum lift. 19 For example, change of status between producing, water injection, or being suspended or abandoned. As described later in section 5.2, a Well Work Safety Case describes the safe envelope within which a well is designed and drilled. This means that design, or drilling changes made in the course of the Well Work Activity that stay within this envelope are not material changes. A change that is outwith that described in the Well Work Safety Case and affects the basis of an approved safety case is considered to be a material change and these include, but are not limited to such changes to the Surface location Target location Pore or fracture pressure gradients Reservoir fluid composition Well trajectory Casing Scheme and Drilling plan such as to include coiled tube drilling where this had previously not been included in the safety case. The petroleum undertaking should ensure that the total impact of non-material changes is monitored so that if a number of non-material changes are proposed and the sum of these is material, the safety case is resubmitted to the CER before this occurs. This requirement is to specifically avoid a material change being made in a piecemeal fashion. Download 0.73 Mb. Share with your friends:
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