| dc.description.abstract | This Field Project provides an overview of the typical substation Engineering-Procurement-Construction (EPC) project delivery method, the work breakdown structure, activities and sequences in the Critical Path Method (CPM) schedule, basic substation design criteria, substation project approach and defines the Client’s, subcontractor’s and Burns & McDonnell’s responsibilities.Burns & McDonnell Engineering specializes and acts as Prime Contractor in the EPC of electrical substations. The Transmission and Distribution Division designs the EPC substations and the Construction Design/Build Division purchases the required equipment and materials, monitors substation construction activities and manages all of the field issues. EPC refers to a method of project delivery where Burns & McDonnell contracts with the Client to perform all design, procurement and construction services in order to complete a substation. A Substation EPC project life cycle includes Pre-Qualification, submitting the Proposal to the Client, Negotiation with the vendors, subcontractors and Client, Design and Procurement of major equipment, Construction, Testing, Commissioning, and Operation.CPM Schedule is a network scheduling technique where large elements of a project are subdivided based on a work breakdown structure into activities and sequenced based on interrelationships such that time usage can be calculated to determine the earliest
date work can be accomplished and the latest date work needs to be completed.The critical path is the longest activity path from the start to finish of the project. An activity, which is not on the critical path, will have float. Float is the amount of time an activity can be delayed without it becoming a critical path activity. Any activity on the critical path that experiences a delay will consequently delay the project milestone or completion date or require corrective action.Some of the activities of a substation EPC project may not be started before other tasks or portion of tasks or activities have been completed. For example, foundations for the steel structures must be in well along before erecting the steel structures can start. Site grading and excavation must proceed before installing the steel structure foundations. The Client’s responsibilities include identify project goals, decide a project delivery system, determine whether Client needs assistance of a consultant, select a representative and determine any limitations on the representative’s authority, decide upon a procurement process for EPC, determine the appropriate payment methodology for EPC contract, allocate project risk, obtain project financing, furnish site information, identify Client-furnished deliverables, review and approve design submissions of EPC, inspect construction for compliance with contract, develop efficient change order process, and obtain appropriate project insurance.The substation EPC project design team’s responsibilities include deliverables
according to the contract between Client and Burns & McDonnell. The Electrical engineering group develops the electrical drawings and the Civil engineering group develops the civil drawings for Client’s review. The electrical and civil drawings will be issued for construction after Client’s approval. Substation EPC project design team also reviews and approves vendor drawings. Project coordinator keeps track of the electrical and civil deliverables and construction activities.Design criteria is very important for a substation EPC project because substation equipment, materials, and construction cost will be established using the defined design criteria. Design criteria should remain the same during the EPC project. If design criteria changes in the middle of the EPC project; engineering and construction reworking cost can be expensive for both the Client and Burns & McDonnell.Experienced project management, engineering, environmental, procurement, construction management, and construction team will be assembled to perform all of the services required for a substation EPC project. The Project manager leads a select team of experienced professionals through the numerous tasks required to provide the client with fully functional, cost effective substation facility. Burns & McDonnell’s Quality Assurance and Quality Control Program involve throughout the length of the project helping insure that project objectives are met.Design manual, detailed civil and electrical engineering design for the substation EPC project will be provided to Client by Burns & McDonnell. Substation will be designed in accordance with applicable Client’s standards, industry standards and codes, and federal, state or local requirements. Burns & McDonnell utilizes the latest version of MicroStation or AutoCAD for detailing and drafting applications. The project design manual addresses the specific parameters of the design including applicable standards, codes, and interpretations of codes and standards that may affect the design. The project design manual also addresses the scope of the project and any specialized or unique design techniques used in the development of the design documents.Client’s specifications for substation equipment procurement will be utilized and will provide a comprehensive approach to the procurement process, and pre-qualify suppliers that Burns & McDonnell trusts to provide timely and technically sound products. Previous experiences will be considered at time of award and packages will be awarded on a best-value basis and Client’s preferred vendors will be utilized. Substation equipment and materials bid documents include bid forms, general requirements, design condition, major equipments, steel structures, equipment and materials, control building, and relay panels.Client’s specifications for substation construction will be utilized and Burns & McDonnell will select the substation construction subcontractor. Substation construction includes construction management, site work including grading and erosion control, installation of fence, major equipments, foundations, grounding, conduit, raceway, control building, relay panels, and steel structures erection and equipment testing.Burns & McDonnell is committed to constructing a safe project. The avoidance of any occupational related deaths or injuries is Burns & McDonnell’s highest priority. As a result of the focus on safety, Burns & McDonnell is dedicated to assuring the safety of all Burns & McDonnell personnel as well as managing safe work sites. One of the most critical aspects of producing a successful project safety and health program is to set the goal from the beginning. A “No Tolerance” standard for unsafe workplace conditions and acts will be established. The subcontractors will be made aware from the onset that safety will play a significant role in the success of the project.Burns & McDonnell’s quality control organization performs inspections of all items of work to ensure conformance to applicable specifications and drawings with respect to identification. Testing and inspection operations will be reviewed for compliance with contract specifications. Work will be inspected daily to assure continuing compliance with plans and specifications until the completion. Substation engineering team will be responsible for reviewing and certifying shop drawings, catalog data, samples, material certifications and test data that will be performed in coordination with the approved design. No material or equipment will be authorized to release for fabrication or delivery to the job site until the submittals have been approved. | |
