SITE MANAGEMENT-RELATED CAUSES OF REWORK AND THE PERFORMANCE OF OIL AND GAS PROJECTS IN NIGERIA

Purpose: One of the factors that often contribute significantly to cost and schedule overruns is rework. This study aimed at determining the influence of site management-related causes of rework on the performance of oil and gas construction projects.

Design/methodology/approach: A survey research design approach was adopted using stratified random sampling of 555 contractors and 395 consultants involved in the execution of oil and gas construction projects in South-South Geo-Political Zone of Nigeria. Data were collected through structured questionnaire and analysed using Mean Item Score, Spearman Rank Correlation test, Kruskal Wallis test and One Sample T-test.

Findings: Results of the study showed that there is agreement between contractors and consultants on the frequency of occurrence of site management-related causes of rework. Ineffective site leadership, poor communication, poor planning and allocation of resources, ineffective use of quality management practices and constructability problems are the five most occurring causes of rework in oil and gas construction projects. The result also indicated that these causes of rework have significant influence on time and cost performance of oil and gas construction projects. In addition, the result revealed that the occurrence and influence of site management-related causes of rework do not depend on project location.

Research limitations/implications: The study focused on site management-related causes of rework among other causes of rework in oil and gas construction projects. It also relied on the experiences and good judgement of the respondents to evaluate the frequency of occurrence and influence of these causes of rework on the cost and schedule performance of construction projects.

Practical implications: Quality management training for project site team, adequate time and resources availability for site verification prior to construction execution are recommended to enhance knowledge and awareness of quality control and reduce errors and omission which subsequently result in rework during construction.

Originality/value: The study concluded that site management-related causes of rework have significant influence on the cost and schedule performance of oil and gas projects and this influence does not depend on project location.