It is well established that amyloid β-protein (Aβ) self-assembly is involved in triggering of Alzheimer’s disease. On the other hand, evidence of physiological function of Aβ interacting with lipids has...

The O&M Code was developed when it was decided to move Pump and Valve Inservice Testing (IST) Requirements from the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (B&PV) Code, Section XI to a standalone Code. The Code review process structure at the time was quite small and generally consisted of changing Section XI Subsections IWP and IWV into OM language. At the same time, new testing techniques were being developed that included check valve condition monitoring and current trace testing of motor actuated valves. This necessitated adding groups that were specific to these new initiatives.Although that was several decades ago, these groups remained and, over the years, it was identified that actions, such as Inquiries, were taking much too long to process. This became abundantly clear with the development of the newly published Mandatory Appendix IV for Air Operated Valve Testing. This paper discusses how the Code Committee became the organization that it is and how a new realignment will streamline the Code process and make it more efficient and responsive to the industry/regulatory needs.

The OM Code contains a check valve condition monitoring (Reference Code Appendix II) that has been utilized by Owners at numerous nuclear power plants to improve testing of check valves. Use of this similar approach for pumps is expected to also improve testing of pumps. Comprehensive Pump Testing was originally intended to address not just the pump, but the use of the pump drivers and associate pump electrical system components to monitor pump health as is currently done for motor actuated valves. The draft comprehensive test requirements included taking motor current pump electrical components, as well as an oil sample, but those requirements were not allowed to go into the final Code language, e.g., motor current signature requirements. The reason was that this was considered including the motor in IST and was not in the OM scope. However, the motor, in that case, was used to verify acceptable pump operation only. Also, enhanced vibration techniques, such as spectral analysis were also considered. This paper will present the use of Pump Condition monitoring as a method to enhance IST and, in some cases replace traditional pump IST intervals, similar to what is done for check valve condition monitoring. The proposed Pump condition monitoring program will rely on the revised OM-14.