标准2025BSI发布了一项新的规程，旨在转换地下管线数据流、，诸如水管、电话线和光纤电缆等的获取、记录、维护和共享方法。
地下管线（即所谓的“地下资产”）的准确定位对土方开挖起着至关重要的作用，因为准确定位可以保证管线正常运行，将成本降至最低，也符合健康安全标准的要求。每年都有超过三百万处公路开挖，然而可供资产所有者参考的关于管理及维护该数据的最佳方法的行业标准少
之又少，这导致了不必要的挖掘，进而致使不必要的环境破坏，给公众带来不便。
PAS256地下资产—地理位置信息及数据的获取、记录、维护及共享的制定是为了规定已存在数据的质量、准确性及可用性。借助英国土木工程协会的资助，PAS提供了建议和指导，以改善地下资产数据的获取、记录及维护过程，并实现安全共享管线信息、本地管理者信息及其
他的供应商基础设施信息。
英国有很多地下管网，大多数都隶属于公用事业公司和当地政府，是英国国家基础设施的重要组成部分。本PAS适用于私有及公共土地的地下管线，内容涵盖：
– 传输空间数据，以相对精度作为最低标准，趋向于绝对精度，（包含深度）并借助其他方式作为支撑，如照片及标签；
– 共享数据中包含已拆除或废弃使用的管线；
– 用以辅助地下管线最终定位的警告和保护装置的使用方法；
– 从安装之日起至可以正常共享数据的目标时间期限；
– s50及同等许可下工程的数据获取方法；
– 兼容地理标记语言；
– 涵盖本地政府及其他组织的地下管线；
– 取代原有纸质或微缩胶片记录，转而使用结构化易获取的电子格式；
– 象征学，类型学。，彩色编码及分层；
– 数据汇总
BSI建筑环境市场部主任安特.伯德（Ant Burd）指出：“不必要的挖掘既消耗时间，又浪费金钱。PAS256的制定可以让各组织更简单地获取、记录、维护及共享开挖工程的所在地信息。获取信息是个双赢过程，对这个行业、环境及长期受到住所或单位周围开挖工程影响的本地
居民都是如此。”
PAS256应与PAS128地下管线缺陷、检查及定位标准一起使用。PAS128适用于正在运行中的、废弃的、多余的以及未知的地下管线及其相关的地面设施定位，规定了现有地下管线及新建地下管线的缺陷、检测及定位要求。
除英国土木工程师协会之外，下列组织也参与了PAS256的编制：A Luck协会；阿伯丁郡议会人员； Centriforce Products有限公司；土木工程承包商协会；恩菲尔德议会；希思罗机场控股公司；Les Guest协会； LinesearchbeforeUdig有限公司；国家联合公用事业集团；
Ordnance Survey有限公司； Pitney Bowes软件； Premier Energy Services有限公司；Subscan Technology有限公司；泰晤士水务公司；TPS Consult；伦敦交通局；伯明翰大学工学院；及一个增补成员。
New code of practice for recording data on underground utilities
BSI, the business standards company, has launched a new code of practice to transform the way data on underground utilities – such as water pipes, telephone lines, and fibre optic cables – is captured, recorded, maintained and shared.
Accurate mapping of underground utilities – also known as “buried assets” – is vital for those undertaking excavations in order to maintain service, minimize costs and comply with health and safety legislation. There are in excess of 3 million highway excavations each year – yet there is scant industry guidance for asset owners on how they might best manage and maintain these data records. This results in unnecessary excavations, causing needless environmental disturbance and inconvenience for the public.
PAS 256, Buried assets – Capturing, recording, maintaining and sharing of location information and data – Code of practice, was created to address the variable quality, reliability and availability of existing data. Sponsored by the Institution of Civil Engineers, the PAS provides recommendations and guidance to improve the capturing, recording and maintaining of data related to buried assets, and the security-minded sharing of asset information relating to utilities’, local authorities’ and other providers’ infrastructure.
The vast network of buried assets in the UK, typically owned by utility companies and local authorities, form a key part of the UK’s critical national infrastructure. The PAS applies to buried assets located in private and public land, and the code of practice covers:
– transition of spatial data, using relative accuracy as a minimum and moving towards absolute accuracy, (including depth) together with supporting evidence such as photographs or tagging
– inclusion of decommissioned or abandoned assets when sharing data
– the use of warning and protection devices to aid the final location of the buried asset
– a target number of days to make data available for sharing from installation
– the capture of data emanating from works carried out under s50 license or equivalent
– compatibility with Geography Markup language (GML)
– the inclusion of local authority and other organizations’ buried assets
– movement from paper or microfiche records to a structured, accessible digital format
– symbology, typology, colour coding and layering
– a data glossary
Ant Burd, Head of Market Development for Built Environment at BSI, said: “Needless digging wastes time and money. PAS 256 was created to make it easier for organizations to capture, record, maintain and share the location of their excavation work. Access to data is a win-win for the industry, the environment, and local residents subjected to repeated digging outside their homes or businesses.”
PAS 256 is intended to be used alongside PAS 128, Specification for underground utility defection, verification and location. PAS 128 applies to active, abandoned, redundant or unknown underground utilities and the location of their associated surface features. It specifies requirements for the detection, verification and location of existing and new underground utilities.
In addition to the Institution of Civil Engineers, the following organizations were also involved in the development of PAS 256: A Luck Associates; Aberdeenshire County Council Atkins; Centriforce Products Ltd; Civil Engineering Contractors Association; Enfield Council; Heathrow Airport Holdings Ltd; Les Guest Associates; LinesearchbeforeUdig Ltd; National Joint Utilities Group; Ordnance Survey Ltd; Pitney Bowes Software; Premier Energy Services Ltd; Subscan Technology Ltd; Thames Water; TPS Consult; Transport for London; University of Birmingham, School of Engineering; and a co-opted member.