Preparation of System Design Documents
Table of Contents
1 Scope........................................................................................... 2
2 Conflicts and Deviations............................................................... 3
3 Applicable Documents, Acronyms and Definitions....................... 3
4 Responsibilities............................................................................. 4
5 Instructions.................................................................................... 5
Appendix 1 - System Design Document Contents...............................
- Scope
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- Application
This Engineering Procedure (EP) provides instructions for the development and approval of a System Design Document (SDD) for both new and major expansion of process control and automation systems.
Any Process Automation System (PAS), Process Control Systems (PCS), Distributed Control Systems (DCS), Supervisory Control & Data Acquisition Systems (SCADA), combined DCS/SCADA, "Process Computers" and any combination of these items shall fall under the scope of this EP, provided that EP-governs the execution of the project. These systems shall be referred to henceforth as a PAS in this document.
EP-is applicable for projects in which a) a process automation system is included, and b) overall cost of the system is $2,000,000 or greater.
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- Purpose
The System Design Document (SDD) documents the design basis of the Process Automation System (PAS) and Plant Information Management Systems (PlMS). It is a project-specific engineering document which addresses the system design aspects and supplements design considerations that are project specific normally not covered by Vendor's standard engineering and maintenance manuals.
This document defines the design basis of the architecture, configuration, data bases, hardware, software and communication (both internal and external) aspects of the PAS. It shall provide the basis for the detailed design and integration of the PAS.
The SDD is typically prepared by the Vendor and/or Integrator. It may also be authored by the design engineering contractor if he acts as the integrator.
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- Approval and Timing
The SDD is part of the series of NMRs (Non-Material requirements) as described in EP-.
This document must be approved by B.V. prior to any configuration, software development and assembly of equipment.
It shall be issued prior to mechanical completion as an "as-built" document as a key reference for system and control engineers. It shall provide accurate and sufficient detail as the key document for future modifications and expansions. | 