Find & Apply For Maintenance / Service Supervisor Jobs in Mont Belvieu, Texas

Supervisor, (I&E High Voltage) Maintenance - 000H1B Description Enterprise Products Partners L.P. is one of the largest publicly traded partnerships and a leading North American provider of midstream energy services to producers and consumers of natural gas, NGLs, crude oil, refined products and petrochemicals.

Our services include:

natural gas gathering, treating, processing, transportation and storage; NGL transportation, fractionation, storage and import and export terminals; crude oil gathering, transportation, storage and terminals; petrochemical and refined products transportation, storage and terminals; and a marine transportation business that operates primarily on the United States inland and Intracoastal Waterway systems. The partnership's assets include approximately 50,000 miles of pipelines; 260 million barrels of storage capacity for NGLs, crude oil, refined products and petrochemicals; and 14 billion cubic feet of natural gas storage capacity.

POSITION SUMMARY

The Supervisor, I&E - High Voltage leads a specialized team of instrumentation and electrical technicians responsible for the safe operation, maintenance, and testing of medium- and high-voltage electrical equipment across midstream facilities. Beyond day-to-day supervision, this role carries a strategic mandate: to build and grow an in-house high-voltage testing capability by transitioning the team from writing permits and coordinating third-party testing contractors toward directly performing medium- and high-voltage electrical testing. The successful candidate will assess current team capabilities, develop technician skills and qualifications, standardize testing procedures and equipment, and progressively reduce reliance on external testing contractors — all while strengthening equipment reliability, personnel safety, and regulatory compliance.

KEY RESPONSIBILITIES

Leadership & Team Development

• Lead, coach, and develop a team of high-voltage I&E technicians; set performance expectations, provide feedback, and build long-term bench strength.
• Assess current team capabilities against the skills required to perform MV/HV testing, and build a structured training, qualification, and mentoring roadmap.
• Grow the group as scope and staffing expand; foster a culture of ownership, safety, and accountability.
• Provide training and technical support to technicians and cross-functional partners. Electrical Equipment Testing Capability
• Establish standardized testing procedures, methods, and acceptance criteria aligned with NETA MTS and

NFPA 70B

condition-based maintenance practices.

• Develop a standardized equipment testing program — insulation resistance, power factor / tan delta, VLF, transformer turns ratio, contact and winding resistance, and protective relay testing (primary and secondary injection).
• Develop technician qualification programs so all testing is performed safely by qualified personnel under a clear competency standard.
• Progressively reduce reliance on external testing contractors while maintaining reliability, safety, and schedule, retaining contractor support strategically where it makes sense. Maintenance, Reliability & Compliance
• Oversee installation, troubleshooting, testing, and maintenance of MV/HV equipment — substations, switchgear, breakers, transformers, protective relays, substation and branch feeders, variable frequency drives, and associated controls.
• Implement and maintain preventive and condition-based maintenance programs, aligning PM intervals with

NFPA 70B.

• Champion electrical safety; ensure compliance with NFPA 70E and applicable codes, proper permitting, lockout/tagout, and safe work practices.
• Interpret and maintain P&IDs, one-line diagrams, and complex electrical drawings; ensure drawings and documentation are kept current. Planning & Coordination
• Coordinate and prioritize testing and maintenance activities with Operations to maximize equipment availability and minimize unplanned downtime.
• Plan and schedule outages, turnarounds, and testing campaigns; manage workload, priorities, callouts, and overtime.
• Support budget development and cost control, capturing savings as in-house capability reduces contractor spend.
• Communicate effectively with technicians, Operations, Engineering, and third-party stakeholders at all levels of the organization.

Qualifications

QUALIFICATIONS - REQUIRED

• High school diploma or G.E.D. equivalent.
• Minimum 7+ years of electrical and instrumentation experience, including medium- and/or high-voltage equipment, preferably in an energy-related industry.
• Minimum 2+ years in a supervisory, lead, or crew-leadership role, or demonstrated leadership of technical teams.
• Thorough knowledge of electrical codes and familiarity with AC voltage (120-480V) three-phase and single-phase plus 24 VDC; working knowledge of medium- and high-voltage systems.
• Working knowledge of

NFPA 70E

electrical safety practices.

• Ability to read and interpret P&IDs, one-lines, blueprints, work permits, and technical instruction manuals.
• Basic computer skills (MS Word, Excel) for creating and updating work records and reports.
• Valid driver's license and acceptable driving record.

QUALIFICATIONS - PREFERRED

• Graduation from a technical trade school, apprenticeship, certification, or associate degree program in instrumentation, electrical, or related studies.
• Journeyman electrical designation highly preferred.
• Hands-on MV/HV electrical testing experience (insulation resistance, power factor / tan delta, VLF, TTR, contact resistance, protective relay testing).
• Familiarity with NETA testing standards and

NFPA 70B

condition-based maintenance.

• Experience building, scaling, or insourcing a testing program or maintenance team.
• Experience with DCS/PLC systems, VFDs, protective relaying, and substation equipment.

ATTRIBUTES

• Takes initiative, is proactive in addressing issues, and completes tasks efficiently.
• Communicates effectively in writing and verbally, and adapts style to influence, persuade, negotiate, and engage.
• Assumes responsibility, prioritizes, and responds to multiple tasks under potentially stressful and/or hazardous conditions.
• Demonstrates conscientiousness, dependability, and commitment to the role, team, and company; works effectively in a fast-paced environment with less definition, policy, and bureaucracy.

Primary Location :

USA-Texas-Mont Belvieu Shift :

Day Job Travel :

Yes, 10 % of the

Time Unposting Date :

Ongoing Organization :

Operations Job :

Maintenance Job Level :

Individual Contributor