50 Using This Manual

AbstractThis section defines how this manual is organized in order to help the reader quickly find appropriate information.

The Instrumentation and Control Manual is organized in two volumes. Volume 1, Part 1, contains the engineering guidelines and appendices. Volume 1, Part 2, contains Company specifications and standard drawings and forms. Volume 2 contains industry codes and practices.Chevron Corporation 50-1 June 1993

50 Using This Manual Instrumentation and Control ManualScope and ApplicationThe Instrumentation and Control Manual has been written for convenient reference by Company personnel engaged in technical work with instrumentation and control systems. It is directed to entry-level personnel and non-instrument specialists as well as experienced engineers.

This manual covers approximately ninety percent of the most commonly used instruments, describing their applications and basic principles of operation. In addi-tion, Sections 200, P&ID Development, and 1200, Relief Systems, describe areas in which project engineers normally act in conjunction with an instrument engineer.Other discussions related to specific applications or peripheral concerns of instru-mentation and control may be found in the Fired Heater Manual (instruments for fired heat), Tank Manual (instruments for tanks), Compressor Manual (instruments for compressors), Driver Manual (instruments for drivers), General Machinery Manual (vibration monitoring systems), Electrical Manual (area classification, relays, etc.), and Pipeline Manual (SCADA systems for pipelines).

OrganizationThe colored tabs in the manual will help you find information quickly.

White tabs identify sections pertaining to the manual as a whole

Blue tabs are engineering guidelines

Gray tabs are used for specifications, data sheets, data sheet guides, and related industry standards (API, ISA)

A red tab is included for local documents

Change bars, vertical black lines, have been used in the margins of the master speci-fications to indicate where information has been added, changed, or deleted in refer-ence to the last edition of the manual.

Engineering Guidelines (Volume 1, Part 1, Sections 100 through 1700)Engineering guidelines provide information on principles of operation, applica-tions, and selection criteria for instruments and control systems, as well as other subjects of interest to instrumentation and control engineers.Refer to the first page of each engineering guideline for an abstract of that section and a detailed Table of Contents.

Engineering Specifications, Drawings and Forms (Volume 1, Part 2)This part of the manual contains (1) Company specifications in commented form and (2) Company standard drawings and forms that pertain to the areas discussed in the guidelines.June 1993 50-2 Chevron Corporation

Instrumentation and Control Manual 50 Using This ManualIndustry Codes and StandardsVolume 2 contains industry standards that are pertinent to the guidelines.

Other Company ManualsThe text sometimes refers to documents in other Company manuals. These docu-ments carry the prefix of that manual. The prefixes and their referents are:

Prefix Company ManualCIV Civil and StructuralCMP CompressorCOM CoatingsCPM Corrosion PreventionDRI DriverELC ElectricalEXH Exchangers and Cooling TowersFFM Fluid FlowFPM Fire ProtectionGAM General and AdministrativeHTR Fired Heaters and Waste Heat RecoveryICM Instrumentation and ControlIRM Insulation and RefractoryMAC General MachineryNCM Noise ControlPIM PipingPMP PumpsPPL PipelinePVM Pressure VesselTAM TanksUTL UtilitiesWEM WeldingChevron Corporation 50-3 June 1993

Manual ContentsEngineering SpecificationsStandard Drawings & Forms