International Peer-Reviewed Journal•Open Access•ISSN 2456-8880
[email protected]•+91-7433024337

Home / Current Issue / Paper 1724088

1724088 Vol 3 · Issue 5 Download Paper

Strategic Sourcing and Contract Design for Reliable Fuel and Equipment Supply in Energy Operations

Eromosele Asibor Francis Ojeakhena Festus-Michael Uwagboe Damilola Grace Babayemi

Subject area: Management and Commerce  ·  Area of research: Strategic Sourcing in Energy Supply Contracts

DOI: 10.64388/IREV3I5-1724088

Abstract

Energy operations, including upstream oil and gas production, power generation, and midstream logistics, depend on the uninterrupted availability of two broad categories of inputs: fuels and consumables that are used continuously, and capital equipment and spare parts whose failure or late arrival can halt production. Interruptions in either category carry costs that are typically far larger than the purchase value of the input itself, arising from lost output, contractual penalties, safety exposure, and emergency procurement premiums. Despite this, procurement in the sector has often been managed as a transactional activity focused on unit price, and cost reduction programmes during periods of low commodity prices have in some cases weakened supply resilience. This paper examines how strategic sourcing and contract design can secure reliable fuel and equipment supply. It adopts an analytical review design, drawing on 233 sources published up to 2019 across purchasing and supply management, operations management, contract economics, corporate finance, and applied energy research, including regional work from West African energy and industrial settings. The analysis is organised around four decision areas: supplier qualification, pricing structures, contract terms, and delivery reliability. The review shows that purchases are best segmented by supply risk and value impact, and that the depth of supplier qualification should be proportionate to the cost of failure in each category. Suppliers should be assessed on technical capability, capacity, logistics access, financial strength, safety performance, information security, and resilience, with qualification treated as a continuing process rather than a one-time gate. Pricing mechanisms should match the volatility and observability of underlying costs: indexation suits commodity inputs with liquid reference markets, escalation formulas suit long-lead equipment, and incentive or availability-based payments suit services where supplier effort drives outcomes. Contract duration, volume tolerances, service levels, performance incentives, and structured review provisions protect relationship-specific investments and allow adjustment as conditions change, while formal terms and relational governance work best as complements. Delivery reliability emerges as a property of a designed system that combines supplier selection, buffer stocks, dual sourcing, supplier-managed and consignment inventory, quality verification, and monitoring, rather than as a characteristic of any single supplier. These findings are drawn together in a conceptual model in which the category position of a purchase shapes four interdependent design choices that jointly determine supply outcomes, moderated by the cost of failure, market volatility, and institutional context. The model yields practical guidance by purchase category and four propositions for empirical testing. For practitioners, the paper supports a shift in procurement performance measurement from unit price savings toward total cost of ownership and supply continuity. For policymakers, it highlights the risks of lowest-price tender rules in critical categories and the value of pairing local content requirements with supplier development and prompt payment. The review is analytical rather than systematic and its model has not yet been tested with data; priorities for further research include empirical studies of contract performance in emerging-market energy sectors, joint design of physical supply contracts and financial hedging, multi-tier supplier visibility, and the effects of digitalisation and the energy transition on sourcing strategy.

Keywords

strategic sourcing; contract design; supplier qualification; pricing mechanisms; supply reliability; energy operations; transaction cost economics; performance-based contracting

References

[1] Abdulrazaq K, Yusuf HD, Osinem HE, Eribenne F (2019). A model for improving infection detection accuracy through integrated laboratory information systems. Iconic Research and Engineering Journals, 3(6), 650–675. https://doi.org/10.64388/IREV3I6-1723089

[2] Adaramola TS, Fadero S, Gideon EN (2018). Predictive maintenance and condition monitoring in critical power and energy infrastructure. Iconic Research and Engineering Journals, 2(5), 454–477. https://doi.org/10.64388/IREV2I5-1722489

[3] Adeyelu OO (2018). A predictive compliance monitoring framework for detecting systemic safety risks through aviation consumer complaint data. Iconic Research and Engineering Journals, 1(8), 250–276. https://doi.org/10.64388/IREV1I8-1718478

[4] Adeyelu OO (2019). An adaptive safety management system implementation model for aerodromes in developing economy contexts. Iconic Research and Engineering Journals, 3(4), 628–654. https://doi.org/10.64388/IREV3I4-1718479

[5] Agbabiaka J, Okonkwo CS, Ogunwole O, Mayo W, Okeke OT (2019). Supply chain risk management model for EPC and gas processing projects. Iconic Research and Engineering Journals, 3(2), 968–980. https://doi.org/10.64388/IREV3I2-1713124

[6] Agboada P, Ezeako R, Okoli IE, Ibeh AV (2018). Distributorship and trade finance product design: A conceptual framework for new-to-bank growth in emerging markets. Iconic Research and Engineering Journals, 2(5), 552–578. https://doi.org/10.64388/IREV2I5-1723312

[7] Agboada P, Ezeako R, Okoli IE, Uzondu CS (2018). Digital transformation in operations management: A review of advances in automation, analytics, and process redesign. International Journal of Engineering Technology Research & Management, 2(11), 109–134.

[8] Agboada P, Ezeako R, Okoli IE, Uzondu CS (2019). Standard operating procedures as change infrastructure: A conceptual framework for sustaining operational improvement. Iconic Research and Engineering Journals, 3(6), 706–730. https://doi.org/10.64388/IREV3I6-1723313

[9] Agyei RK, Izuchukwu OT, Feboh D, Idowu A (2018). Integrated marketing communications and subscriber growth in a Sub-Saharan telecom sub-brand. International Journal of Marketing and Communication Studies, 3(2), 49–71. https://doi.org/10.56201/ijmcs.v3.no2.2018.pg49.71

[10] Agyei RK, Izuchukwu OT, Feboh D, Idowu A (2019). Determinants of web-based payment portal adoption in Sub-Saharan Africa: A review and synthesis. International Journal of Computer Science and Mathematical Theory, 5(2), 56–79. https://doi.org/10.56201/ijcsmt.vol.5.no2.2019.pg56.79

[11] Ahmed KS, Odejobi OD (2018a). Conceptual framework for scalable and secure cloud architectures for enterprise messaging. IRE Journals, 2(1), 1–15.

[12] Ahmed KS, Odejobi OD (2018b). Resource allocation model for energy-efficient virtual machine placement in data centers. IRE Journals, 2(3), 1–10.

[13] Ahmed KS, Odejobi OD, Oshoba TO (2019). Algorithmic model for constraint satisfaction in cloud network resource allocation. IRE Journals, 2(12), 516–532.

[14] Akeju B, Edivri J, Ogbole JI, Okoruwa PO, Fadayomi O, Abolaji TO (2018). Conceptual model for insider threat classification and risk modeling in complex digital systems. Iconic Research and Engineering Journals, 1(9), 476–492. https://doi.org/10.64388/IREV1I9-1713778

[15] Akomolafe O, Agu MU (2018). A conceptual model for enhancing internal audit quality through technology-enabled risk assessment frameworks. Iconic Research and Engineering Journals, 1(9), 458–475.

[16] Akomolafe O, Agu MU (2019a). A conceptual framework for developing risk-based internal control models in the insurance and banking sectors. Iconic Research and Engineering Journals, 2(8), 335–354.

[17] Akomolafe O, Agu MU (2019b). A review of data-driven risk evaluation models for emerging market financial institutions. Iconic Research and Engineering Journals, 3(6), 433–448.

[18] Akomolafe O, Agu MU (2019c). Advances in financial resilience through integrated governance and compliance strategies. Iconic Research and Engineering Journals, 2(10), 607–620.

[19] Amayo EB (2017). Multi algorithm of loss objective function of a single phase induction motor. International Journal of Development Research, 7(5), 12805–12810.

[20] Amayo EB, Popoola TT (2017a). Multi algorithm of weight objective function of a single phase induction motor. International Journal of Trend in Research and Development, 4(2), 184–188.

[21] Amayo EB, Popoola TT (2017b). Scientific study of telecommunication deployment in achieving quality network. International Journal of Trend in Research and Development, 4(5), 311–314.

[22] Amayo EB, Ubeku E, Oshevire P (2015). Multi algorithm of a single objective function of a single phase induction motor. Journal of Multidisciplinary Engineering Science and Technology, 2(12), 3400–3403.

[23] American Petroleum Institute (2013). Specification Q1: Specification for quality management system requirements for manufacturing organizations for the petroleum and natural gas industry (9th ed.). Washington, DC: API.

[24] Aminu-Ibrahim AY, Ogbete JC, Ambali KB (2018). Developing sustainable diagnostic laboratory infrastructure models for emerging and resource constrained health systems. Iconic Research and Engineering Journals, 1(8), 118–132. https://doi.org/10.64388/IREV1I8-1713586

[25] Aminu-Ibrahim AY, Ogbete JC, Ambali KB (2019). Capital project delivery models for high risk healthcare infrastructure in developing national health systems. Iconic Research and Engineering Journals, 2(10), 626–649. https://doi.org/10.64388/IREV2I10-1713588

[26] Aneke OB, Adesemoye AC (2019). Toward an integrated conceptual framework for traceability and chain-of-custody integrity in pharmaceutical distribution. Iconic Research and Engineering Journals, 3(4), 655–672.

[27] Anichukwueze CC, Osuji VC, Oguntegbe EE (2019). Global marketing law and consumer protection challenges: A strategic framework for multinational compliance. IRE Journals, 3(6), 325–333.

[28] Anyanwu KCE (2019). Developing a maturity model for standardizing IT support operations across geographically distributed multi-office organizations. Iconic Research and Engineering Journals, 3(5)., 580–598.

[29] Arumosoye OM, Obriki OD (2018). Development of an integrated heat stress risk conceptual model for industrial operations in extreme environments. Iconic Research and Engineering Journals, 1(12), 141–160. https://doi.org/10.64388/IREV1I12-1714415

[30] Arumosoye OM, Obriki OD (2019). Systematic review of near-miss and hazard observation data utilization in industrial safety management. Iconic Research and Engineering Journals, 3(2), 981–999. https://doi.org/10.64388/IREV3I2-1714417

[31] Atta S, Asomani E, Adenuga OM (2018). A systematic review of green corrosion inhibitors from agricultural extracts for mild steel protection in acidic and alkaline media. International Journal of Engineering and Modern Technology, 4(1), 64–97. https://doi.org/10.56201/ijemt.vol.4.no1.2018.pg64.97

[32] Aye PA, Tawose OM (2015). Acceptability and utilization of graded levels of Gmelina arborea leaves and cassava peels concentrate by West African dwarf sheep. International Journal of Advances in Agriculture, 4(2), 415–422. https://doi.org/10.24297/jaa.v4i2.4272

[33] Aye PA, Tawose OM (2016). Physiological responses of West African dwarf sheep fed graded levels of Gmelina arborea leaf and cassava peel concentrates under different management systems. Agriculture and Biology Journal of North America, 7(4), 185–195. https://doi.org/10.5251/abjna.2016.7.4.185.195

[34] Azeez LO, Badmus OB (2018). Data-driven framework for predicting subsurface contamination pathways in complex remediation projects. Iconic Research and Engineering Journals, 2(5), 312–335.

[35] Bacchetti A, Saccani N (2012). Spare parts classification and demand forecasting for stock control: Investigating the gap between research and practice. Omega, 40(6), 722–737.

[36] Badmus O, Olamide AL (2019). Advanced hydrological modeling approach for assessing climate-induced watershed vulnerability trends. Iconic Research and Engineering Journals, 3(5), 388–410.

[37] Badmus O, Dosunmu AA, Ozowara DE (2018). A systematic review of CI/CD pipeline strategies in Salesforce DevOps: Tools, practices, and deployment outcomes. Iconic Research and Engineering Journals, 2(6).

[38] Badmus O, Dosunmu AA, Ozowara DE (2019a). A conceptual model for ETL design and data integration in Salesforce-centric enterprise architectures. Iconic Research and Engineering Journals, 3(5).

[39] Badmus O, Dosunmu AA, Ozowara DE (2019b). A governance framework for Salesforce platform management in regulated healthcare environments. Iconic Research and Engineering Journals, 3(6).

[40] Baines TS, Lightfoot HW, Benedettini O, Kay JM (2009). The servitization of manufacturing: A review of literature and reflection on future challenges. Journal of Manufacturing Technology Management, 20(5), 547–567. https://doi.org/10.1108/17410380910960984

[41] Bajari P, Tadelis S (2001). Incentives versus transaction costs: A theory of procurement contracts. RAND Journal of Economics, 32(3), 387–407.

[42] Barnes-Schuster D, Bassok Y, Anupindi R (2002). Coordination and flexibility in supply contracts with options. Manufacturing & Service Operations Management, 4(3), 171–207. https://doi.org/10.1287/msom.4.3.171.7754

[43] Baumeister C, Kilian L (2016). Forty years of oil price fluctuations: Why the price of oil may still surprise us. Journal of Economic Perspectives, 30(1), 139–160. https://doi.org/10.1257/jep.30.1.139

[44] Beamon BM (1999). Measuring supply chain performance. International Journal of Operations & Production Management, 19(3), 275–292.

[45] Berger PD, Gerstenfeld A, Zeng AZ (2004). How many suppliers are best? A decision-analysis approach. Omega, 32(1), 9–15.

[46] Blome C, Schoenherr T (2011). Supply risk management in financial crises: A multiple case-study approach. International Journal of Production Economics, 134(1), 43–57.

[47] Bobga MA, Boakye K, Ogbona CS, Yeboah TJ (2018). Pedagogical strategies for teaching students with learning difficulties in resource-constrained schools. Iconic Research and Engineering Journals, 2(4), 173–194. https://doi.org/10.64388/IREV2I4-1714176

[48] Bola-Sadipe D, Aliliele C, Eboh EE (2019). Conceptual model for strategic accounting systems strengthening financial transparency and regulatory compliance. IRE Journals, 3(6), 535–564. https://doi.org/10.64388/IREV3I6-1715327

[49] Cachon GP (2003). Supply chain coordination with contracts. In A. G. de Kok & S. C. Graves (Eds.), Handbooks in Operations Research and Management Science: Vol. 11. Supply Chain Management (pp. 227–339). Amsterdam: Elsevier.

[50] Cachon GP, Lariviere MA (2005). Supply chain coordination with revenue-sharing contracts: Strengths and limitations. Management Science, 51(1), 30–44. https://doi.org/10.1287/mnsc.1040.0215

[51] Cannon JP, Perreault WD (1999). Buyer-seller relationships in business markets. Journal of Marketing Research, 36(4), 439–460. https://doi.org/10.1177/002224379903600404

[52] Cao Z, Lumineau F (2015). Revisiting the interplay between contractual and relational governance: A qualitative and meta-analytic investigation. Journal of Operations Management, 33–34, 15–42. https://doi.org/10.1016/j.jom.2014.09.009

[53] Carter DA, Rogers DA, Simkins BJ (2006). Does hedging affect firm value? Evidence from the US airline industry. Financial Management, 35(1), 53–86.

[54] Chai J, Liu JNK, Ngai EWT (2013). Application of decision-making techniques in supplier selection: A systematic review of literature. Expert Systems with Applications, 40(10), 3872–3885. https://doi.org/10.1016/j.eswa.2012.12.040

[55] Charnes A, Cooper WW, Rhodes E (1978). Measuring the efficiency of decision making units. European Journal of Operational Research, 2(6), 429–444.

[56] Chen CT, Lin CT, Huang SF (2006). A fuzzy approach for supplier evaluation and selection in supply chain management. International Journal of Production Economics, 102(2), 289–301.

[57] Cherp A, Jewell J (2014). The concept of energy security: Beyond the four As. Energy Policy, 75, 415–421. https://doi.org/10.1016/j.enpol.2014.09.005

[58] Choi TY, Krause DR (2006). The supply base and its complexity: Implications for transaction costs, risks, responsiveness, and innovation. Journal of Operations Management, 24(5), 637–652.

[59] Chopra S, Sodhi MS (2004). Managing risk to avoid supply-chain breakdown. MIT Sloan Management Review, 46(1), 53–61.

[60] Christopher M, Peck H (2004). Building the resilient supply chain. The International Journal of Logistics Management, 15(2), 1–14. https://doi.org/10.1108/09574090410700275

[61] Cohen MA, Agrawal N, Agrawal V (2006). Winning in the aftermarket. Harvard Business Review, 84(5), 129–138.

[62] Corts KS, Singh J (2004). The effect of repeated interaction on contract choice: Evidence from offshore drilling. Journal of Law, Economics, and Organization, 20(1), 230–260. https://doi.org/10.1093/jleo/ewh031

[63] Craighead CW, Blackhurst J, Rungtusanatham MJ, Handfield RB (2007). The severity of supply chain disruptions: Design characteristics and mitigation capabilities. Decision Sciences, 38(1), 131–156. https://doi.org/10.1111/j.1540-5915.2007.00151.x

[64] Crocker KJ, Masten SE (1988). Mitigating contractual hazards: Unilateral options and contract length. RAND Journal of Economics, 19(3), 327–343.

[65] Crocker KJ, Masten SE (1991). Pretia ex machina? Prices and process in long-term contracts. Journal of Law and Economics, 34(1), 69–99.

[66] Croston JD (1972). Forecasting and stock control for intermittent demands. Operational Research Quarterly, 23(3), 289–303.

[67] Dagodzo D (2018a). A conceptual framework for UAV integration into national power grid inspection programs. Iconic Research and Engineering Journals, 2(5), 391–412. https://doi.org/10.64388/IREV2I5-1716082

[68] Dagodzo D (2018b). A review of UAV applications in electrical transmission line inspection: Methods, technologies, and challenges. Iconic Research and Engineering Journals, 2(6), 234–254. https://doi.org/10.64388/IREV2I6-1716083

[69] Dagodzo D (2018c). Hydrothermal alteration interpretation of LANDSAT and ASTER data. Lambert Academic Publishing.

[70] de Boer L, Labro E, Morlacchi P (2001). A review of methods supporting supplier selection. European Journal of Purchasing & Supply Management, 7(2), 75–89.

[71] Dickson GW (1966). An analysis of vendor selection systems and decisions. Journal of Purchasing, 2(1), 5–17.

[72] Disney SM, Towill DR (2003). The effect of vendor managed inventory (VMI) dynamics on the bullwhip effect in supply chains. International Journal of Production Economics, 85(2), 199–215.

[73] Dogbatsey EA, Ebhojie O (2018). Budget compliance and statutory reporting in Sub-Saharan Africa: A systematic review of frameworks, gaps, and reform pathways. Zenodo. https://doi.org/10.5281/zenodo.20446859

[74] Dogbatsey EA, Ebhojie O, Oyeleye AO (2019). Reconciliation control and financial workflow redesign in emerging market organizations: A conceptual framework. Zenodo. https://doi.org/10.5281/zenodo.20447103

[75] Dosunmu AA, Ogundele PO (2019). Security audit and enterprise risk assessment frameworks for resilient information systems. Iconic Research and Engineering Journals, 3(5), 434–447. https://doi.org/10.64388/IREV3I5-1713225

[76] Dyer JH (1996). Specialized supplier networks as a source of competitive advantage: Evidence from the auto industry. Strategic Management Journal, 17(4), 271–291.

[77] Dyer JH, Singh H (1998). The relational view: Cooperative strategy and sources of interorganizational competitive advantage. Academy of Management Review, 23(4), 660–679.

[78] Eisenhardt KM (1989). Agency theory: An assessment and review. Academy of Management Review, 14(1), 57–74.

[79] Ejofodomi OA, Gideon EN, Oladipo GO, Oshomah ER (2014). Automated detection of architectural detection in mammograms using template matching. International Journal of Biomedical Science and Engineering, 2(1), 1–6. https://doi.org/10.11648/j.ijbse.20140201.11

[80] Ekemezie UC, Ohunyon G, Sydney E (2018). Evaluating IDSR implementation in Benue State, Nigeria: DHIS2 data quality and surveillance capacity. Iconic Research and Engineering Journals, 2(6).

[81] Ellram LM (1995). Total cost of ownership: An analysis approach for purchasing. International Journal of Physical Distribution and Logistics Management, 25(8), 4–23.

[82] Ezeako R, Okoli IE, Uzondu CS, Ibeh AV (2019). Relationship banking performance: A conceptual framework for portfolio growth and profitability acceleration. International Journal of Engineering Technology Research & Management, 3(11), 132–151.

[83] Fadayomi O, Abolaji TO, Edivri J, Ogbole JI, Okoruwa PO, Akeju B (2019). Risk-based cybersecurity assurance and data availability: Limitations, advances and future research opportunities. Iconic Research and Engineering Journals, 2(12), 602–617. https://doi.org/10.64388/IREV2I12-1713779

[84] Flyvbjerg B (2014). What you should know about megaprojects and why: An overview. Project Management Journal, 45(2), 6–19. https://doi.org/10.1002/pmj.21409

[85] Froot KA, Scharfstein DS, Stein JC (1993). Risk management: Coordinating corporate investment and financing policies. Journal of Finance, 48(5), 1629–1658. https://doi.org/10.1111/j.1540-6261.1993.tb05123.x

[86] Gbadamosi IT, Obogo SF (2013). Chemical constituents and in vitro antimicrobial activities of five botanicals used traditionally for the treatment of neonatal jaundice in Ibadan, Nigeria. Nature and Science, 11(10), 130–135.

[87] Geyskens I, Steenkamp JBEM, Kumar N (2006). Make, buy, or ally: A transaction cost theory meta-analysis. Academy of Management Journal, 49(3), 519–543. https://doi.org/10.5465/amj.2006.21794670

[88] Gideon EN, Adaramola TS, Fadero S (2019). Reliability engineering and failure analysis in complex engineering systems. Iconic Research and Engineering Journals, 2(11), 703–727. https://doi.org/10.64388/IREV2I11-1722490

[89] Gil-Ozoudeh IDS, Aransi AN, Nwafor MI, Uduokhai DO (2018). Socioeconomic determinants influencing the affordability and sustainability of urban housing in Nigeria. IRE Journals, 2(3), 164–169.

[90] Goldberg VP, Erickson JR (1987). Quantity and price adjustment in long-term contracts: A case study of petroleum coke. Journal of Law and Economics, 30(2), 369–398. https://doi.org/10.1086/467141

[91] Grossman SJ, Hart OD (1986). The costs and benefits of ownership: A theory of vertical and lateral integration. Journal of Political Economy, 94(4), 691–719. https://doi.org/10.1086/261404

[92] Guajardo JA, Cohen MA, Kim SH, Netessine S (2012). Impact of performance-based contracting on product reliability: An empirical analysis. Management Science, 58(5), 961–979.

[93] Guay W, Kothari SP (2003). How much do firms hedge with derivatives? Journal of Financial Economics, 70(3), 423–461. https://doi.org/10.1016/S0304-405X(03)00179-X

[94] Gunasekaran A, Patel C, McGaughey RE (2004). A framework for supply chain performance measurement. International Journal of Production Economics, 87(3), 333–347.

[95] Haksöz Ç, Seshadri S (2007). Supply chain operations in the presence of a spot market: A review with discussion. Journal of the Operational Research Society, 58(11), 1412–1429. https://doi.org/10.1057/palgrave.jors.2602401

[96] Hallikas J, Karvonen I, Pulkkinen U, Virolainen VM, Tuominen M (2004). Risk management processes in supplier networks. International Journal of Production Economics, 90(1), 47–58.

[97] Hamilton JD (2009). Causes and consequences of the oil shock of 2007–08. Brookings Papers on Economic Activity, 2009(1), 215–261.

[98] Hart O, Moore J (2008). Contracts as reference points. Quarterly Journal of Economics, 123(1), 1–48.

[99] Haushalter GD (2000). Financing policy, basis risk, and corporate hedging: Evidence from oil and gas producers. Journal of Finance, 55(1), 107–152. https://doi.org/10.1111/0022-1082.00202

[100] Heide JB, John G (1990). Alliances in industrial purchasing: The determinants of joint action in buyer-supplier relationships. Journal of Marketing Research, 27(1), 24–36. https://doi.org/10.1177/002224379002700103

[101] Hendricks KB, Singhal VR (2005). An empirical analysis of the effect of supply chain disruptions on long-run stock price performance and equity risk of the firm. Production and Operations Management, 14(1), 35–52.

[102] Ho W, Xu X, Dey PK (2010). Multi-criteria decision making approaches for supplier evaluation and selection: A literature review. European Journal of Operational Research, 202(1), 16–24.

[103] Ho W, Zheng T, Yildiz H, Talluri S (2015). Supply chain risk management: A literature review. International Journal of Production Research, 53(16), 5031–5069. https://doi.org/10.1080/00207543.2015.1030467

[104] Hubbard RG, Weiner RJ (1986). Regulation and long-term contracting in U.S. natural gas markets. Journal of Industrial Economics, 35(1), 71–79.

[105] Huiskonen J (2001). Maintenance spare parts logistics: Special characteristics and strategic choices. International Journal of Production Economics, 71(1–3), 125–133.

[106] Hypko P, Tilebein M, Gleich R (2010). Benefits and uncertainties of performance-based contracting in manufacturing industries: An agency theory perspective. Journal of Service Management, 21(4), 460–489. https://doi.org/10.1108/09564231011066114

[107] Ilodigwe L, Adesemoye AC (2019a). A critical review of health insurance financing mechanisms and provider payment reform strategies for balancing coverage expansion and financial protection in emerging markets. International Journal of Health and Pharmaceutical Research, 5(2), 31–55. https://doi.org/10.56201/ijhpr.vol.5.no2.2019.pg31.55

[108] Ilodigwe L, Adesemoye AC (2019b). From molecules to health systems: A conceptual model explaining why scientific innovation fails to improve patient outcomes without effective healthcare delivery infrastructure. International Journal of Health and Pharmaceutical Research, 5(2), 56–79. https://doi.org/10.56201/ijhpr.vol.5.no2.2019.pg56.79

[109] International Chamber of Commerce (2019). Incoterms 2020: ICC rules for the use of domestic and international trade terms (ICC Publication No. 723E). ICC.

[110] International Energy Agency (2019a). World energy outlook 2019. IEA. https://doi.org/10.1787/caf32f3b-en

[111] International Energy Agency (2019b). Africa energy outlook 2019. IEA.

[112] International Organization for Standardization (2015). ISO 9001:2015 Quality management systems: Requirements. Geneva: ISO.

[113] Ivanov D, Dolgui A, Sokolov B, Ivanova M (2017). Literature review on disruption recovery in the supply chain. International Journal of Production Research, 55(20), 6158–6174. https://doi.org/10.1080/00207543.2017.1330572

[114] Jardine AKS, Lin D, Banjevic D (2006). A review on machinery diagnostics and prognostics implementing condition-based maintenance. Mechanical Systems and Signal Processing, 20(7), 1483–1510.

[115] Jin Y, Jorion P (2006). Firm value and hedging: Evidence from U.S. oil and gas producers. Journal of Finance, 61(2), 893–919. https://doi.org/10.1111/j.1540-6261.2006.00858.x

[116] Joskow PL (1985). Vertical integration and long-term contracts: The case of coal-burning electric generating plants. Journal of Law, Economics, & Organization, 1(1), 33–80. https://doi.org/10.1093/oxfordjournals.jleo.a036889

[117] Joskow PL (1987). Contract duration and relationship-specific investments: Empirical evidence from coal markets. American Economic Review, 77(1), 168–185.

[118] Joskow PL (1988). Price adjustment in long-term contracts: The case of coal. Journal of Law and Economics, 31(1), 47–83. https://doi.org/10.1086/467149

[119] Jüttner U, Peck H, Christopher M (2003). Supply chain risk management: Outlining an agenda for future research. International Journal of Logistics: Research and Applications, 6(4), 197–210.

[120] Kellogg R (2011). Learning by drilling: Interfirm learning and relationship persistence in the Texas oilpatch. Quarterly Journal of Economics, 126(4), 1961–2004. https://doi.org/10.1093/qje/qjr039

[121] Kennedy WJ, Patterson JW, Fredendall LD (2002). An overview of recent literature on spare parts inventories. International Journal of Production Economics, 76(2), 201–215.

[122] Kilian L (2009). Not all oil price shocks are alike: Disentangling demand and supply shocks in the crude oil market. American Economic Review, 99(3), 1053–1069. https://doi.org/10.1257/aer.99.3.1053

[123] Kim SH, Cohen MA, Netessine S (2007). Performance contracting in after-sales service supply chains. Management Science, 53(12), 1843–1858.

[124] Klein B, Crawford RG, Alchian AA (1978). Vertical integration, appropriable rents, and the competitive contracting process. Journal of Law and Economics, 21(2), 297–326. https://doi.org/10.1086/466922

[125] Kleindorfer PR, Saad GH (2005). Managing disruption risks in supply chains. Production and Operations Management, 14(1), 53–68.

[126] Kleindorfer PR, Wu DJ (2003). Integrating long- and short-term contracting via business-to-business exchanges for capital-intensive industries. Management Science, 49(11), 1597–1615. https://doi.org/10.1287/mnsc.49.11.1597.20583

[127] Kraljic P (1983). Purchasing must become supply management. Harvard Business Review, 61(5), 109–117.

[128] Krause DR, Handfield RB, Tyler BB (2007). The relationships between supplier development, commitment, social capital accumulation and performance improvement. Journal of Operations Management, 25(2), 528–545. https://doi.org/10.1016/j.jom.2006.05.007

[129] Krause DR, Scannell TV, Calantone RJ (2000). A structural analysis of the effectiveness of buying firms' strategies to improve supplier performance. Decision Sciences, 31(1), 33–55.

[130] Kruyt B, van Vuuren DP, de Vries HJM, Groenenberg H (2009). Indicators for energy security. Energy Policy, 37(6), 2166–2181.

[131] Ladapo OO, Dosunmu AA, Jooda D, Abolaji TO (2018). Lessons learned from offline assessment of security-critical systems: The case of Microsoft Active Directory. Iconic Research and Engineering Journals, 2(6), 277–299. https://doi.org/10.64388/IREV2I6-1717205

[132] Ladapo OO, Jooda D, Dosunmu AA, Abolaji TO (2019). Implementation of Active Directory for efficient management of enterprise networks. Iconic Research and Engineering Journals, 3(4), 608–627. https://doi.org/10.64388/IREV3I4-1717206

[133] Laffont JJ, Tirole J (1993). A theory of incentives in procurement and regulation. MIT Press.

[134] Lamidi OBA, Olamide A (2018). Spatially explicit risk modeling framework for tracking subsurface contaminant migration in data-limited remediation sites. Iconic Research and Engineering Journals, 2(6), 178–198.

[135] Lariviere MA, Porteus EL (2001). Selling to the newsvendor: An analysis of price-only contracts. Manufacturing & Service Operations Management, 3(4), 293–305. https://doi.org/10.1287/msom.3.4.293.9971

[136] Lawal OA, Oduleye TE (2018a). A conceptual model for financial analytics driven enterprise value creation in technology firms. Iconic Research and Engineering Journals, 2(2).

[137] Lawal OA, Oduleye TE (2018b). A review and conceptual framework for tax governance and cross-border compliance analytics. Iconic Research and Engineering Journals, 2(5).

[138] Lawal OA, Oduleye TE (2019a). A conceptual risk assessment model for transfer pricing in multinational corporations. Iconic Research and Engineering Journals, 2(12).

[139] Lawal OA, Oduleye TE (2019b). Conceptualizing data driven executive decision systems for strategic financial planning. Iconic Research and Engineering Journals, 3(3).

[140] Lee HL, Padmanabhan V, Whang S (1997). Information distortion in a supply chain: The bullwhip effect. Management Science, 43(4), 546–558.

[141] Liker JK, Choi TY (2004). Building deep supplier relationships. Harvard Business Review, 82(12), 104–113.

[142] Liu Y, Luo Y, Liu T (2009). Governing buyer-supplier relationships through transactional and relational mechanisms: Evidence from China. Journal of Operations Management, 27(4), 294–309. https://doi.org/10.1016/j.jom.2008.09.004

[143] Macneil IR (1980). The new social contract: An inquiry into modern contractual relations. Yale University Press.

[144] Martínez-de-Albéniz V, Simchi-Levi D (2005). A portfolio approach to procurement contracts. Production and Operations Management, 14(1), 90–114.

[145] Masten SE, Crocker KJ (1985). Efficient adaptation in long-term contracts: Take-or-pay provisions for natural gas. American Economic Review, 75(5), 1083–1093.

[146] Mbonu IS, Aliliele C, Iwuanyanwu U, Oluoha OM (2018). A conceptual framework for legal and ethical risk modeling in enterprise data protection governance systems. Iconic Research and Engineering Journals, 2(2), 207–226. https://doi.org/10.64388/IREV2I2-1714911

[147] Mbonu IS, Aliliele C, Uzoka E, Oluoha OM (2019). A review of comparative data protection regulations and secure cloud implementation strategies across jurisdictions. Iconic Research and Engineering Journals, 2(9), 482–501. https://doi.org/10.64388/IREV2I9-1714912

[148] Mbonu IS, Iwuanyanwu U, Uzoka E, Oluoha OM (2019). Advances in enterprise log analytics and automated incident response architectures using Python and SIEM platforms. Iconic Research and Engineering Journals, 3(2), 1000–1019. https://doi.org/10.64388/IREV3I2-1714915

[149] McAfee RP, McMillan J (1986). Bidding for contracts: A principal-agent analysis. RAND Journal of Economics, 17(3), 326–338.

[150] Mensah, Kofi Okyere, Pedro, Omotayo, Kinyanjui, Ann, Okoli, Ifeoma, & Agboada, Priscilla (2019). A review of capital adequacy frameworks and risk weighted asset optimization in modern banking systems. Iconic Research and Engineering Journals, 3(6), 731–768. https://doi.org/10.64388/irev3i6-1723267

[151] Merrow EW (2011). Industrial megaprojects: Concepts, strategies, and practices for success. Wiley.

[152] Michael ON, Ogunsola OE (2019a). Determinants of access to agribusiness finance and their influence on enterprise growth in rural communities. Iconic Research and Engineering Journals, 2(12), 533–548.

[153] Michael ON, Ogunsola OE (2019b). Strengthening agribusiness education and entrepreneurial competencies for sustainable youth employment in Sub-Saharan Africa. Iconic Research and Engineering Journals, 2(9), 416–431.

[154] Ng ICL, Maull R, Yip N (2009). Outcome-based contracts as a driver for systems thinking and service-dominant logic in service science: Evidence from the defence industry. European Management Journal, 27(6), 377–387.

[155] Nwafor MI, Giloid S, Uduokhai DO, Aransi AN (2019a). Architectural interventions for enhancing urban resilience and reducing flood vulnerability in African cities. Iconic Research and Engineering Journals, 2(8), 321–334.

[156] Nwafor MI, Uduokhai DO, Giloid S, Aransi AN (2018). Comparative study of traditional and contemporary architectural morphologies in Nigerian settlements. Iconic Research and Engineering Journals, 1(7), 138–152.

[157] Nwafor MI, Uduokhai DO, Ifechukwu GO, Stephen D, Aransi AN (2018). Impact of climatic variables on the optimization of building envelope design in humid regions. Iconic Research and Engineering Journals, 1(10), 322–335.

[158] Nwafor MI, Uduokhai DO, Ifechukwu GO, Stephen D, Aransi AN (2019b). Developing an analytical framework for enhancing efficiency in public infrastructure delivery systems. Iconic Research and Engineering Journals, 2(11), 657–670.

[159] Nwafor MI, Uduokhai DO, Ifechukwu GO, Stephen D, Aransi AN (2019c). Quantitative evaluation of locally sourced building materials for sustainable low-income housing projects. Iconic Research and Engineering Journals, 3(4), 568–582.

[160] Nwangwu CV, Duvbiama-Owasanoye OA, Onwumere A (2018). A framework for operational integrity in high-risk drilling: Balancing productivity and safety compliance. Iconic Research and Engineering Journals, 2(5), 436–453.

[161] Nwangwu CV, Duvbiama-Owasanoye OA, Onwumere A (2019). A strategic review of the industry-academia collaboration model for modernizing technical learning centers. Iconic Research and Engineering Journals, 3(6), 565–583.

[162] Obetta PC (2018). A risk-based inspection concept for fitness-for-service assessment of ageing pressure vessels on offshore joint venture facilities. Iconic Research and Engineering Journals, 2(5), 497–520. https://doi.org/10.64388/IREV2I5-1722578

[163] Obetta PC (2019). Reliability and integrity management of fired heaters, boilers and furnaces in upstream oil and gas: A review. Iconic Research and Engineering Journals, 3(5), 599–626. https://doi.org/10.64388/IREV3I5-1722580

[164] Obetta PC, Ninduwezuor-Ehiobu N (2018). A condition-based maintenance concept for CALM buoy bearings and swivels to improve offshore crude export availability. Iconic Research and Engineering Journals, 2(6), 385–410. https://doi.org/10.64388/IREV2I6-1722579

[165] Obetta PC, Ninduwezuor-Ehiobu N (2019). Integrity assurance of FSO turret mooring systems: A review of inspection, monitoring and life-extension strategies. Iconic Research and Engineering Journals, 3(6), 599–629. https://doi.org/10.64388/IREV3I6-1722581

[166] Obogo SF, Ozobu CO, Uduokhai DO (2019a). Advances in leadership driven safety culture transformation in large construction workforces. Iconic Research and Engineering Journals, 3(5), 507–523. https://doi.org/10.64388/IREV3I5-1715497

[167] Obogo SF, Ozobu CO, Uduokhai DO (2019b). Development of a construction safety risk governance model for multi contractor high rise projects. Iconic Research and Engineering Journals, 2(9), 502–522. https://doi.org/10.64388/IREV2I9-1715495

[168] Obogo SF, Uduokhai DO, Ozobu CO (2019). Systematic review of hazard identification and risk control practices in urban construction projects. Iconic Research and Engineering Journals, 2(12), 666–681. https://doi.org/10.64388/IREV2I12-1715496

[169] Obriki OD, Arumosoye OM (2018). Conceptual modeling of data-driven occupational safety risk control in large-scale energy infrastructure projects. Iconic Research and Engineering Journals, 1(7), 169–189. https://doi.org/10.64388/IREV1I7-1714414

[170] Obriki OD, Arumosoye OM (2019). A conceptual framework linking management safety walkthrough frequency and coverage to safety culture outcomes in mega projects. Iconic Research and Engineering Journals, 2(8), 355–374. https://doi.org/10.64388/IREV2I8-1714416

[171] Odejobi OD, Ahmed KS (2018a). Statistical model for estimating daily solar radiation for renewable energy planning. IRE Journals, 2(5), 1–12.

[172] Odejobi OD, Ahmed KS (2018b). Performance evaluation model for multi-tenant Microsoft 365 deployments under high concurrency. IRE Journals, 1(11), 92–107.

[173] Odejobi OD, Hammed NI, Ahmed KS (2019). Approximation complexity model for cloud-based database optimization problems. IRE Journals, 2(9), 1–10.

[174] Ogbete JC, Aminu-Ibrahim AY, Ambali KB (2018). Optimizing laboratory spatial planning strategies to improve diagnostic accuracy, safety, and clinical throughput. Iconic Research and Engineering Journals, 2(1), 87–113. https://doi.org/10.64388/IREV1I7-1713587

[175] Ogbete JC, Aminu-Ibrahim AY, Ambali KB (2019). Regulatory compliant design systems for molecular and pathology laboratories in highly controlled environments. Iconic Research and Engineering Journals, 3(4), 607–631. https://doi.org/10.64388/IREV3I4-1713589

[176] Okonkwo CS, Ogunwole O, Okeke OT (2018a). Framework for strategic procurement optimization in oil and gas operations. Iconic Research and Engineering Journals, 1(7), 153–168. https://doi.org/10.64388/IREV1I7-1713119

[177] Okonkwo CS, Ogunwole O, Okeke OT (2018b). Model for inventory availability and plant uptime improvement in energy facilities. Iconic Research and Engineering Journals, 2(4), 160–172. https://doi.org/10.64388/IREV2I4-1713120

[178] Okonkwo CS, Ogunwole O, Okeke OT, Mayo W (2019). Conceptual framework for cost reduction through contract negotiation and vendor governance. Iconic Research and Engineering Journals, 2(9), 468–482. https://doi.org/10.64388/IREV2I9-1713121

[179] Okwesa, Ifeanyichukwu Jeffrey, Ajiga, Daniel, & Iwuanyanwu, Uzoamaka (2019). Automation of log collection and incident triage for security operations: A review. Iconic Research and Engineering Journals, 3(5), 627–650. https://doi.org/10.64388/irev3i5-1722629

[180] Oliva R, Kallenberg R (2003). Managing the transition from products to services. International Journal of Service Industry Management, 14(2), 160–172. https://doi.org/10.1108/09564230310474138

[181] Olsen TE, Osmundsen P (2005). Sharing of endogenous risk in construction. Journal of Economic Behavior & Organization, 58(4), 511–526. https://doi.org/10.1016/j.jebo.2003.09.019

[182] Oshevire P, Eyenubo OJ, Amayo B (2017). Voltage control in the presence of distributed generation. ATBU Journal of Science, Technology and Education, 5(2), 165–173.

[183] Oshoba TO, Hammed NI, Odejobi OD (2019). Secure identity and access management model for distributed and federated systems. IRE Journals, 3(4), 550–567.

[184] Osmundsen P, Sørenes T, Toft A (2010). Offshore oil service contracts: New incentive schemes to promote drilling efficiency. Journal of Petroleum Science and Engineering, 72(3–4), 220–228. https://doi.org/10.1016/j.petrol.2010.03.021

[185] Osmundsen P, Toft A, Dragvik KA (2006). Design of drilling contracts: Economic incentives and safety issues. Energy Policy, 34(15), 2324–2329. https://doi.org/10.1016/j.enpol.2005.04.011

[186] Pasternack BA (1985). Optimal pricing and return policies for perishable commodities. Marketing Science, 4(2), 166–176.

[187] Pettit TJ, Fiksel J, Croxton KL (2010). Ensuring supply chain resilience: Development of a conceptual framework. Journal of Business Logistics, 31(1), 1–21.

[188] Ponomarov SY, Holcomb MC (2009). Understanding the concept of supply chain resilience. The International Journal of Logistics Management, 20(1), 124–143. https://doi.org/10.1108/09574090910954873

[189] Poppo L, Zenger T (2002). Do formal contracts and relational governance function as substitutes or complements? Strategic Management Journal, 23(8), 707–725. https://doi.org/10.1002/smj.249

[190] Regnier E (2007). Oil and energy price volatility. Energy Economics, 29(3), 405–427. https://doi.org/10.1016/j.eneco.2005.11.003

[191] Saaty TL (1980). The Analytic Hierarchy Process. New York: McGraw-Hill.

[192] Schmitt AJ, Singh M (2012). A quantitative analysis of disruption risk in a multi-echelon supply chain. International Journal of Production Economics, 139(1), 22–32.

[193] Seifert RW, Thonemann UW, Hausman WH (2004). Optimal procurement strategies for online spot markets. European Journal of Operational Research, 152(3), 781–799. https://doi.org/10.1016/S0377-2217(02)00754-3

[194] Selviaridis K, Wynstra F (2015). Performance-based contracting: A literature review and future research directions. International Journal of Production Research, 53(12), 3505–3540. https://doi.org/10.1080/00207543.2014.978031

[195] Sheffi Y (2005). The Resilient Enterprise: Overcoming Vulnerability for Competitive Advantage. Cambridge, MA: MIT Press.

[196] Sheffi Y, Rice JB (2005). A supply chain view of the resilient enterprise. MIT Sloan Management Review, 47(1), 41–48.

[197] Sherbrooke CC (1968). METRIC: A multi-echelon technique for recoverable item control. Operations Research, 16(1), 122–141.

[198] Shittu H, Opara IS, Elumilade RA, Adeniji IO (2019). Hydrogen as a secondary energy carrier: Modeling its integration in national grids. Iconic Research and Engineering Journals, 3(1), 628–643. https://doi.org/10.64388/IREV3I1-1713909

[199] Smith CW, Stulz RM (1985). The determinants of firms' hedging policies. Journal of Financial and Quantitative Analysis, 20(4), 391–405. https://doi.org/10.2307/2330757

[200] Snyder LV, Atan Z, Peng P, Rong Y, Schmitt AJ, Sinsoysal B (2016). OR/MS models for supply chain disruptions: A review. IIE Transactions, 48(2), 89–109. https://doi.org/10.1080/0740817X.2015.1067735

[201] Sodhi MS, Son BG, Tang CS (2012). Researchers' perspectives on supply chain risk management. Production and Operations Management, 21(1), 1–13.

[202] Sovacool BK, Mukherjee I (2011). Conceptualizing and measuring energy security: A synthesized approach. Energy, 36(8), 5343–5355. https://doi.org/10.1016/j.energy.2011.06.043

[203] Sunday EA, Omoegun GO (2018). Integrating solar power solutions in small-scale manufacturing industries in Nigeria. International Journal of Scientific Research in Science, Engineering and Technology, 4(8), 832–853.

[204] Sunday EA, Omoegun GO (2019). Optimizing electrical load distribution for hybrid solar installations in developing economies. International Journal of Scientific Research in Mechanical and Materials Engineering, 3(6), 27–47.

[205] Sunday EA, Omoegun GO, Essien MA, Oluokun OA (2019). Thermodynamic efficiency and control strategies in residential air conditioning systems. International Journal of Scientific Research in Civil Engineering, 3(3), 52–76.

[206] Syntetos AA, Babai MZ, Altay N (2012). On the demand distributions of spare parts. International Journal of Production Research, 50(8), 2101–2117.

[207] Tang CS (2006a). Perspectives in supply chain risk management. International Journal of Production Economics, 103(2), 451–488. https://doi.org/10.1016/j.ijpe.2005.12.006

[208] Tang CS (2006b). Robust strategies for mitigating supply chain disruptions. International Journal of Logistics: Research and Applications, 9(1), 33–45.

[209] Tomlin B (2006). On the value of mitigation and contingency strategies for managing supply chain disruption risks. Management Science, 52(5), 639–657.

[210] Treleven M, Schweikhart SB (1988). A risk/benefit analysis of sourcing strategies: Single vs. multiple sourcing. Journal of Operations Management, 7(3–4), 93–114.

[211] Tsay AA (1999). The quantity flexibility contract and supplier-customer incentives. Management Science, 45(10), 1339–1358. https://doi.org/10.1287/mnsc.45.10.1339

[212] Uchechi N (2018). Mitigating enterprise financial exposure: Standardization of stamp duty policies and class action defense protocols. Iconic Research and Engineering Journals, 2(5), 521–551. https://doi.org/10.64388/IREV2I5-1722788

[213] Uchechi N, Ominyi M (2019). Liability mitigation and dispute prevention in high-value energy service contracts. Iconic Research and Engineering Journals, 3(6), 676–705. https://doi.org/10.64388/IREV3I6-1722790

[214] Uchechi N, Ominyi M, Jones BC (2018). Procedural standardization and workflow optimization in high-volume dispute resolution clinics: A systematic review. Iconic Research and Engineering Journals, 2(6), 420–452. https://doi.org/10.64388/IREV2I6-1722789

[215] Uchechi N, Ominyi M, Anichukwueze CC, Jones BC (2019). Corporate policy advocacy and regulatory reform: Streamlining statutory bidding workflows in emerging energy markets. Iconic Research and Engineering Journals, 3(5), 672–709. https://doi.org/10.64388/IREV3I5-1722791

[216] Unamma, Uchechi Mary-Linda, Ashore-Onisemo, Funmilayo, Iwuanyanwu, Uzoamaka, & Okwesa, Ifeanyichukwu Jeffrey (2018a). Digital inclusion and workforce-readiness interventions in emerging economies: A review. International Journal of Scientific Research in Computer Science, Engineering and Information Technology. https://doi.org/10.32628/CSEIT12283141

[217] Unamma, Uchechi Mary-Linda, Ashore-Onisemo, Funmilayo, Iwuanyanwu, Uzoamaka, & Okwesa, Ifeanyichukwu Jeffrey (2018b). Predictive forecasting for operational resource allocation: A comparative review. Iconic Research and Engineering Journals, 1(9), 493–508. https://doi.org/10.64388/irev1i9-1722628

[218] Unamma, Uchechi Mary-Linda, Okwesa, Ifeanyichukwu Jeffrey, Iwuanyanwu, Uzoamaka, & Ajiga, Daniel (2018). An offline-first design framework for digital learning in low-connectivity environments. Iconic Research and Engineering Journals, 2(3). https://doi.org/10.64388/irev2i3-1722627

[219] Valentini G, Zavanella L (2003). The consignment stock of inventories: Industrial case and performance analysis. International Journal of Production Economics, 81–82, 215–224.

[220] van Weele AJ (2018). Purchasing and Supply Chain Management (7th ed.). Andover: Cengage Learning.

[221] Vandermerwe S, Rada J (1988). Servitization of business: Adding value by adding services. European Management Journal, 6(4), 314–324.

[222] Waller M, Johnson ME, Davis T (1999). Vendor-managed inventory in the retail supply chain. Journal of Business Logistics, 20(1), 183–203.

[223] Weber CA, Current JR, Benton WC (1991). Vendor selection criteria and methods. European Journal of Operational Research, 50(1), 2–18.

[224] Wikiri M (2019). Global technology talent development in emerging markets: A conceptual framework for preparing software professionals for international employment. Iconic Research and Engineering Journals, 3(5), 651–671. https://doi.org/10.64388/IREV3I5-1723088

[225] Williamson OE (1979). Transaction-cost economics: The governance of contractual relations. Journal of Law and Economics, 22(2), 233–261. https://doi.org/10.1086/466942

[226] Williamson OE (1985). The Economic Institutions of Capitalism. New York: Free Press.

[227] Winzer C (2012). Conceptualizing energy security. Energy Policy, 46, 36–48. https://doi.org/10.1016/j.enpol.2012.02.067

[228] Wu DJ, Kleindorfer PR, Zhang JE (2002). Optimal bidding and contracting strategies for capital-intensive goods. European Journal of Operational Research, 137(3), 657–676. https://doi.org/10.1016/S0377-2217(01)00093-5

[229] Yeboah TJ, Bobga MA, Boakye K, Ogbona CS (2019). Professional development and teacher competence in managing exceptional learners: A Ghanaian perspective. Iconic Research and Engineering Journals, 2(12), 618–636. https://doi.org/10.64388/IREV2I12-1714177

[230] Yergin D (2006). Ensuring energy security. Foreign Affairs, 85(2), 69–82. https://doi.org/10.2307/20031912

[231] Yu H, Zeng AZ, Zhao L (2009). Single or dual sourcing: Decision-making in the presence of supply chain disruption risks. Omega, 37(4), 788–800.

[232] Yusuf HD, Abdulrazaq K (2018). A conceptual framework for strengthening diagnostic quality systems in resource-limited clinical laboratories. Iconic Research and Engineering Journals, 1(11), 145–179. https://doi.org/10.64388/IREV1I11-1723090

[233] Zadeh LA (1965). Fuzzy sets. Information and Control, 8(3), 338–353.

How to cite this paper

Eromosele Asibor, Francis Ojeakhena, Festus-Michael Uwagboe, Damilola Grace Babayemi "Strategic Sourcing and Contract Design for Reliable Fuel and Equipment Supply in Energy Operations" Iconic Research And Engineering Journals Volume 3 Issue 5 2019 Page 710-742 https://doi.org/10.64388/IREV3I5-1724088
Eromosele Asibor, Francis Ojeakhena, Festus-Michael Uwagboe, Damilola Grace Babayemi "Strategic Sourcing and Contract Design for Reliable Fuel and Equipment Supply in Energy Operations" Iconic Research And Engineering Journals, vol. 3, no. 5, Nov. 2019, doi: https://doi.org/10.64388/IREV3I5-1724088
Eromosele Asibor, Francis Ojeakhena, Festus-Michael Uwagboe, Damilola Grace Babayemi (2019). Strategic Sourcing and Contract Design for Reliable Fuel and Equipment Supply in Energy Operations. Iconic Research And Engineering Journals, 3(5). doi: https://doi.org/10.64388/IREV3I5-1724088
Eromosele Asibor, Francis Ojeakhena, Festus-Michael Uwagboe, Damilola Grace Babayemi "Strategic Sourcing and Contract Design for Reliable Fuel and Equipment Supply in Energy Operations" Iconic Research And Engineering Journals, vol. 3, no. 5, Nov. 2019. Crossref, https://doi.org/10.64388/IREV3I5-1724088
@article{1724088,
      author = {Eromosele Asibor, Francis Ojeakhena, Festus-Michael Uwagboe, Damilola Grace Babayemi},
      title = {Strategic Sourcing and Contract Design for Reliable Fuel and Equipment Supply in Energy Operations},
      journal = {Iconic Research And Engineering Journals},
      year = {2019},
      volume = {3},
      number = {5},
      pages = {710-742},
      issn = {2456-8880},
      url = {https://www.irejournals.com/formatedpaper/1724088.pdf},
      abstract = {Energy operations, including upstream oil and gas production, power generation, and midstream logistics, depend on the uninterrupted availability of two broad categories of inputs: fuels and consumables that are used continuously, and capital equipment and spare parts whose failure or late arrival can halt production. Interruptions in either category carry costs that are typically far larger than the purchase value of the input itself, arising from lost output, contractual penalties, safety exposure, and emergency procurement premiums. Despite this, procurement in the sector has often been managed as a transactional activity focused on unit price, and cost reduction programmes during periods of low commodity prices have in some cases weakened supply resilience. This paper examines how strategic sourcing and contract design can secure reliable fuel and equipment supply. It adopts an analytical review design, drawing on 233 sources published up to 2019 across purchasing and supply management, operations management, contract economics, corporate finance, and applied energy research, including regional work from West African energy and industrial settings. The analysis is organised around four decision areas: supplier qualification, pricing structures, contract terms, and delivery reliability. The review shows that purchases are best segmented by supply risk and value impact, and that the depth of supplier qualification should be proportionate to the cost of failure in each category. Suppliers should be assessed on technical capability, capacity, logistics access, financial strength, safety performance, information security, and resilience, with qualification treated as a continuing process rather than a one-time gate. Pricing mechanisms should match the volatility and observability of underlying costs: indexation suits commodity inputs with liquid reference markets, escalation formulas suit long-lead equipment, and incentive or availability-based payments suit services where supplier effort drives outcomes. Contract duration, volume tolerances, service levels, performance incentives, and structured review provisions protect relationship-specific investments and allow adjustment as conditions change, while formal terms and relational governance work best as complements. Delivery reliability emerges as a property of a designed system that combines supplier selection, buffer stocks, dual sourcing, supplier-managed and consignment inventory, quality verification, and monitoring, rather than as a characteristic of any single supplier. These findings are drawn together in a conceptual model in which the category position of a purchase shapes four interdependent design choices that jointly determine supply outcomes, moderated by the cost of failure, market volatility, and institutional context. The model yields practical guidance by purchase category and four propositions for empirical testing. For practitioners, the paper supports a shift in procurement performance measurement from unit price savings toward total cost of ownership and supply continuity. For policymakers, it highlights the risks of lowest-price tender rules in critical categories and the value of pairing local content requirements with supplier development and prompt payment. The review is analytical rather than systematic and its model has not yet been tested with data; priorities for further research include empirical studies of contract performance in emerging-market energy sectors, joint design of physical supply contracts and financial hedging, multi-tier supplier visibility, and the effects of digitalisation and the energy transition on sourcing strategy.},
      keywords = {strategic sourcing; contract design; supplier qualification; pricing mechanisms; supply reliability; energy operations; transaction cost economics; performance-based contracting},
      month = {November},
      doi = {https://doi.org/10.64388/IREV3I5-1724088}
  }