These surveys are performed to help verify cathodic protection levels and coating efficiency. This is the most common type of CIS used on impressed current systems and galvanic systems where current sources can be interrupted. Generally the interval for each potential measurement collected is approximately 2.5 to 5 feet.

CIPS, sometimes referred to as CIS (Close Interval Survey), is an above ground, non-intrusive survey, which is used to accurately determine the effectiveness of a cathodic protection system along the entire buried or immersed pipeline route.

A close interval survey (CIS) is a measurement tool used to ensure pipeline cathodic protection systems are operating to NACE SP0169 specified standards. Close interval surveys may also be referred to as close interval potential surveys (CIPS). They are often part of a structured External Corrosion Direct Assessment (ECDA) process.

2014年1月1日 · Pipe-to-soil close interval surveys (CIS) or close interval potential surveys (CIPS) are used to evaluate the effectiveness of the cathodic protection system of a buried or submerged pipeline. CISs are conducted as an integral part of maintaining the safe operation of the pipeline, and they provide in-depth knowledge and information required to ...

This manual is designed to provide individuals who will be performing “Close Interval Potential Surveys” (CIPS or CIS) with a practical knowledge of how to select appropriate test equipment, how to set up and properly connect the test apparatus, how to actually perform close interval potential surveys, and, ultimately, how to transfer (upload) s...

2023年1月6日 · A close interval potential (CIP) survey is a systematic method utilized to detect corrosion on buried or immersed metallic structures such as pipelines or storage tanks. This survey clearly contributes to measuring the electrical potential difference between two closely spaced electrodes at an interval of one meter or less.

A Close Interval Survey is used to determine the effectiveness of the Cathodic Protection System by measuring the Pipe-To-Soil potentials along the pipeline between test stations, and to ensure they are performing up to NACE SP0169 specified standards. Close Interval Surveys are sometimes referred to as Close Interval Potential Surveys.

Close Interval Potential Surveys (CIPS) measure potentials along the entire length of the pipeline to determine any underprotected areas caused by coating defects, contact with other services or general lack of protection current.

CIPS surveys are an effective and proven tool in the pipeline operator’s integrity programme that can be used to assess the effectiveness of the pipeline’s CP systems and to identify areas of corrosion risk. When performed on a regular basis they can be used to evaluate coating degradation and provide information on areas requiring

2016年2月29日 · Close Interval Potential Surveys (CIPS) or close interval surveys (CIS) for those in the United States, are an invaluable assessment tool used to maintain pipeline integrity. Close Interval Surveys are frequently mandated by pipeline regulatory authorities.