European Journal of Business and Social Sciences, Vol. 4, No. 03, June 2015. P.P. 127 - 135 URL: http:/ / www.ejbss.com/ recent.aspx-/ ISSN: 2235 -767X EUROPEAN JOURNAL OF BUSINESS AND SOCIAL S CIENCES 127 EFFECTS OF SURVEI LLANCE ON OI L PI PELI NE VANDALI SM I N THE DOWNST REAM SECTOR, NI GERI A. Emmanuel Onwuka, Ph.D Department of Marketing, Rivers State Polytechnics, Bor i , Ri ver s St at e, Ni ger i a. Onwubiko N. Dike, Ph.D (Corresponding Author) Department of Management Sciences, Rhema University, Aba, Abi a St at e, Ni ger Email: bikodike@gmail.com ABST RACT. his study assessed the effects of surveillance operation on oil (petroleum products) pipeline vandalism in the downstream sector of Nigeria. The study was a survey design and adopted stratified and simple random sampling techniques. One hypothesis and a research question guided the study. The target population was 1468 involving 1258 major and independent oil marketers (Category A), 110 policy makers (Nigerian National Petroleum Corporation, NNPC and Petroleum Products Pricing Regulatory Agency, PPPRA: Category B) and 100 senior staff of Pipeline and Products Marketing Company, PPMC (Category C). The sample size was 314.The sample size for each category of the respondents was determined. Primary and secondary sources of data were accessed. In-depth interviews were held. The structuring of the questionnaire was based on the five point Likert scale format. Opinions of marketing experts were used in the questionnaire validation. The scores derived from the pilot study were processed with Cronbach Alpha technique. A reliability coefficient of the research instrument, 0.971 was estimated. Using one way ANOVA technique and Minitab software package, the hypothesis was tested at 0.05 level of significance and 9 degrees of freedom. The study revealed that the extent of surveillance operation at 28.84 percent had non- significant positive effects on the oil (petroleum products) pipeline vandalism in the downstream sector of Nigeria. Recommendations were made. KEYW ORDS: Petroleum products, Downstream, Vandalism, Surveillance, Depots & Refinery. T