第1部分:关于管道系统安装公差的技术位置该技术位置提供轻水反应堆管道和管道支架位置的竣工几何公差，这些位置被认为可以与设计几何尺寸相协调。也就是说，如果报告的对设计至关重要的竣工尺寸不超过技术位置中给出的总公差，则符合基于设计文件的电厂许可承诺的管道系统几何形状也被视为符合要求。目前，大多数核电站建设活动涉及大量时间和资金，用于协调竣工管道和支架位置与设计配置。之所以会出现这种情况，是因为按照设计图纸上给出的准确尺寸制造和安装管道和管道支架是不切实际的，如果不是不可能的话。 然而，设计文件（包括分析）必须依赖于设计几何图形，因为有必要在发布施工前确定初始设计的可接受性。最终，任何重大分歧都必须得到调和。第2部分:绝缘管道阻尼值的技术立场——总结报告在压力容器研究委员会管道系统指导委员会的指导下，管道系统技术委员会阻尼值工作组编制了一份关于管道阻尼的立场文件。本文件建议管道系统的抗震设计使用比管理导则1.61中规定的更高的阻尼值。这些建议基于对21组数据的分析，这些数据组来自详细报告草稿中所述的两个实验室现场管道阻尼试验。 其中16组数据来自非绝缘轻水反应堆（LWR）管道系统。来自轻度绝缘LWR管道的单个数据集包含在两个数据组中，来自高度绝缘液态金属反应堆（LMR）管道的多个数据集包含在三个数据组中。光绝缘被发现对阻尼没有明显的影响。相反，高度绝缘的LMR管道具有明显更高的阻尼。工作组认识到，重绝缘可能会增加阻尼，但现有的数据量不足以量化这种影响。然后，工作组将这些高度隔离的数据判断为非典型数据，并没有将其用于制定1983年的技术立场。因此，技术位置基于未绝缘和轻度绝缘管道阻尼数据。

Part 1: Technical Position on Piping System Installation TolerancesThe Technical Position provides tolerances on the as-built geometry of Light Water Reactor piping and pipe support locations that are considered acceptable for reconciliation with as-designed geometry. That is, a piping system geometry that is in compliance with the plant licensing commitments based on the as-designed documentation is also considered to be in compliance if the reported as-built critical to design dimensions do not exceed the total tolerances presented in the Technical Position.Currently, most nuclear power plant construction activities involve a significant amount of time and dollars related to reconciling the as-built piping and support locations with the as-designed configuration. This occurs because it is impractical, if not impossible, to fabricate and install piping and pipe supports to the exact dimensions given on the design drawings. However, the design documentation, including analyses, must rely on the as-designed geometry since it is necessary to determine initial design acceptability prior to release for construction. In the end any significant differences must be reconciled.Part 2: Technical Position on Damping Values for Insulated Pipe - Summary ReportUnder the direction of the Steering Committee on Piping Systems of the Pressure Vessel Research Committee, the Task Group on Damping Values of the Technical Committee on Piping Systems prepared a position document on pipe damping. This document recommended that higher damping values be used for seismic design of pipe systems than those set forth in Regulatory Guide 1.61.These recommendations were based on analysis of twenty-one data groups obtained from both laboratory in in situ pipe damping tests as presented in the detailed draft report. Sixteen of these data groups were obtained from uninsulated Light Water Reactor (LWR) pipe systems. Single data sets from lightly insulated LWR pipe were contained in two data groups and several data sets from heavily insulated Liquid Metal Reactor (LMR) pipe were contained within three data groups.Light insulation was found to have no apparent effect on damping. Conversely, the heavily insulated LMR pipe was noted to have significantly higher damping. The Task Group recognized that heavy insulation could increase damping but that the amount of data available was insufficient to quantify this effect. The Task Group then judged the heavily insulated data as non-typical and did not use it in formulating their 1983 technical position. The technical position was therefore based on uninsulated and lightly insulated pipe damping data.