ELECTRICAL DESIGN BASIS FOR A TYPICAL OIL&GAS ON SHORE PROCESS PLANT POWER DISTRIBUTION SYSTEM AT 33KV WITH STEAM GENERATOR FROM PROCESS STEAM RECEIVING INPUT POWER FROM UPSTREAM 132KV ASWELL AS FROM STG AS PER IEC STANDARD VOLTAGE AND SPECS. THIS CAN EQUALLY BE USED FOR SAFE AREA PROCESS PLANT IF HAZARDOUS PORTION IS TAKEN OUT.NOTE THIS IS TYPICAL GUIDE TO GENERALISED ELECTRICAL DESIGN BASIS AND HAS TO SUIT YOUR PROJECT KEY SLD AND DESIGN PHILOSOPHY AND TO BE UPDATED ACCORDINGLY.
INTRODUCTION
1.1 OBJECTIVE
The purpose of this document is to define the basic philosophy to be applied in the design of the electrical network and equipment. The electrical system design and equipment specifications shall be in line with applicable British/IEC Standards or other International Standards, performance standards, subject to local standards/statutory
requirements and Order of Precedence in Clause 2.1.
The required plant availability shall be achieved by selection of highly reliable equipment and/or technology and sparing of equipment critical to production and this shall be reflected in the Utility load list. The design of the electrical network shall focus on avoiding total shutdown of the plant due to scheduled or unplanned maintenance.The objective is to provide suitable electrical infrastructure to enable connecting, starting and running of the project loads and also to cater for process uncertainties in design. Switchgears shall be designed with appropriate spare capacity and spare feeders in order to accommodate process loads without any major modification for electrical infrastructure.This document shall be read in conjunction with all other referenced and/or relevant philosophies, documents and drawings if included in the package.
