ISO/ASME 14414-2015 pdf free.Pump system energy assessment.
5.1.3 Level 2 assessments Level 2 assessments shall be performed when it is clear that the observed operating conditions are representative for the operation of the systems and the changes in operating condition are small or non-existent. Level 2 assessments shall be performed using data taken from the facility information systems, in paper or electronic format, or by using portable measuring devices. The measurements shall cover a limited amount of time, thus giving a snapshot of the operating conditions at the time of measurement.
5.1.4 Level 3 Assessments Level 3 assessments shall be made on pumps systems where conditions vary substantially over time. For such systems, the assessment team shall record the system performance data over the time period or capture data at the extreme duty points. This activity shall be associated with more extensive use of in situ monitoring to ensure that the operating conditions can be accurately determined at the various duty points (i.e. design point, normal, rated, maximum and minimum flow rates). The monitoring shall be made by connecting transducers to data logging equipment and recording the sensor output, or in some facilities, where historical information is stored, the relevant information should be downloaded from the facility information system.
5.5? Information? needed? to? assess? the? efficiency? of? a? pumping? system 5.5.1 General After the decision is taken on which pumping systems require further investigation, the following information from 5.5.2 to 5.5.6 shall be gathered. The assessment team shall determine the data collection needs for each system being evaluated. The assessment team shall maintain quality assurance in the design and execution of a measurement plan as a consistent, repeatable, and reproducible process. The measurement plan shall adhere to principles of safety, transparency, and reliability. The measurement plan shall include the measurements required to develop an annual energy consumption baseline for the pumping system. This is typically done by taking instantaneous flow, pressure and electrical measurements and determining operating hours at varying system conditions. Cross-checking should be done to ensure the data are correct.
5.6.2 Measurement of pump and motor operating data The primary required data to be measured shall be head, flow, power, and operating time. If the operating conditions of the pumping system are constant or only vary minimally in time, a snapshot of the operating conditions may be enough to assess the system. If the system demand varies over time, the assessment team shall determine if the system needs to be monitored over time and what time period is reasonable to get a representation of all operating conditions. Operating data may also be used if readily available in the facility process control or database of historical operating conditions. Uncertainty on measurements and uncertainty on final results should be estimated during the evaluation of the assessment.ISO/ASME 14414 pdf download.