PODS Data Interchange Standards
The PODS Association has, collectively with its industry partners, developed Data Interchange Standards to improve the flow of data exchange between the PODS Data Model and various pipeline applications. The purpose of these Data Interchange Standards (IDX) is to establish the data structure that will enable electronic integration of data and standardized reporting of data within the pipeline industry, and to allow transfer between different software packages or computer systems. The utilization of data standards and data interchange standards reduces the difficulty of using various programs to analyze or graph data and to allow for comparison of data gathered for a given pipeline segment at different times, regardless of the software system used to collect it.
These standards are then typically incorporated into the PODS Pipeline Data Model
during future release cycles.
External Corrosion Direct Assessment (ECDA)
Jointly developed by PODS and NACE, the National Association of Corrosion Engineers (an ANSI Standards organization), the External Corrosion Direct Assessment (ECDA) Standard is freely available to NACE and PODS members. The standard was approved as NACE SP0507-2007, “External Corrosion Direct Assessment (ECDA) Integrity Data Exchange (IDX) Format.”
The objective of this standard practice is the development of a new external corrosion direct assessment (ECDA) data interchange data structure that will enable electronic integration of data and standardize reporting of ECDA data within the pipeline industry, to allow transfer between different software packages or computer systems. This is expected to minimize difficulty in using various programs to analyze or graph data and allow for comparison of data gathered for a given pipeline segment at different times, regardless of the software system used to collect it. The format outlined is the commonly used American Standard Code for Information Interchange (ASCII) comma delimited text file, which is adaptable to all data processing systems. There currently are no standards for submission and management of ECDA data. This standard is expected to serve as a template for future internal corrosion direct assessment (ICDA) and stress corrosion cracking direct assessment (SCCDA) data interchange standards. It presents one suggested exchange format to standardize data transfer. Some users may not find it applicable to their use.
Data collection and testing procedures shall conform to NACE SP0207, Performing Close-Interval Potential Surveys on Buried or Submerged Metallic Pipelines,1 the draft in progress by TG 294, Aboveground Survey Techniques for the Evaluation of Underground Pipeline Coating Condition,2 NACE SP0169,3 and other applicable recommended NACE standards for accurate ECDA pipeline integrity data.
This standard is intended for use by corrosion control personnel and information technology professionals involved with acquiring, analyzing, or maintaining ECDA data, contractors performing ECDA, and regulatory agencies.
For accurate and correct application, this standard must be used in its entirety. Using or citing only specific paragraphs or sections can lead to misinterpretation and misapplication of the recommendations and practices presented. Specific practices are not designated for every situation because of the complexity of conditions to which buried or submerged piping systems are exposed.