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Recommended Practice for Pipeline SCADA Displays API RECOMMENDED PRACTICE 1165 FIRST EDITION, JANUARY 2007 `,,```,,,,````-`-`,,`,,`,`,,` - REAFFIRMED, JULY 2012 Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale Recommended Practice for Pipeline SCADA Displays API RECOMMENDED PRACTICE 1165 FIRST EDITION, JANUARY 2007 REAFFIRMED, JULY 2012 Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - Pipeline Segment SPECIAL NOTES API publications necessarily address problems of a general nature With respect to particular circumstances, local, state, and federal laws and regulations should be reviewed Neither API nor any of API's employees, subcontractors, consultants, committees, or other assignees make any warranty or representation, either express or implied, with respect to the accuracy, completeness, or usefulness of the information contained herein, or assume any liability or responsibility for any use, or the results of such use, of any information or process disclosed in this publication Neither API nor any of API's employees, subcontractors, consultants, or other assignees represent that use of this publication would not infringe upon privately owned rights API publications may be used by anyone desiring to so Every effort has been made by the Institute to assure the accuracy and reliability of the data contained in them; however, the Institute makes no representation, warranty, or guarantee in connection with this publication and hereby expressly disclaims any liability or responsibility for loss or damage resulting from its use or for the violation of any authorities having jurisdiction with which this publication may conflict API publications are published to facilitate the broad availability of proven, sound engineering and operating practices These publications are not intended to obviate the need for applying sound engineering judgment regarding when and where these publications should be utilized The formulation and publication of API publications is not intended in any way to inhibit anyone from using any other practices Any manufacturer marking equipment or materials in conformance with the marking requirements of an API standard is solely responsible for complying with all the applicable requirements of that standard API does not represent, warrant, or guarantee that such products in fact conform to the applicable API standard All rights reserved No part of this work may be reproduced, stored in a retrieval system, or transmitted by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission from the publisher Contact the Publisher, API Publishing Services, 1220 L Street, N.W., Washington, D.C 20005 Copyright © 2007 American Petroleum Institute `,,```,,,,````-`-`,,`,,`,`,,` - Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale FOREWORD Nothing contained in any API publication is to be construed as granting any right, by implication or otherwise, for the manufacture, sale, or use of any method, apparatus, or product covered by letters patent Neither should anything contained in the publication be construed as insuring anyone against liability for infringement of letters patent This document was produced under API standardization procedures that ensure appropriate notification and participation in the developmental process and is designated as an API standard Questions concerning the interpretation of the content of this publication or comments and questions concerning the procedures under which this publication was developed should be directed in writing to the Director of Standards, American Petroleum Institute, 1220 L Street, N.W., Washington, D.C 20005 Requests for permission to reproduce or translate all or any part of the material published herein should also be addressed to the director Generally, API standards are reviewed and revised, reaffirmed, or withdrawn at least every five years A one-time extension of up to two years may be added to this review cycle Status of the publication can be ascertained from the API Standards Department, telephone (202) 682-8000 A catalog of API publications and materials is published annually and updated quarterly by API, 1220 L Street, N.W., Washington, D.C 20005 Suggested revisions are invited and should be submitted to the Standards and Publications Department, API, 1220 L Street, NW, Washington, D.C 20005, standards@api.org iii Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - The colors used in this publication are provided only as examples and are not intended to be exact `,,```,,,,````-`-`,,`,,`,`,,` - Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale CONTENTS Page SCOPE 1.1 Purpose .1 1.2 Scope Limitations REFERENCES DEFINITIONS .2 HUMAN FACTORS ENGINEERING CONSIDERATIONS IN DISPLAY DESIGN 4.1 Short-term Memory 4.2 Signal-to-Noise Ratio 4.3 Eye Scan Pattern 4.4 Consistency 4.5 Coding 5 DISPLAY HARDWARE 5.1 General Considerations 5.2 Display Devices 5.3 Display Response .6 5.4 Controller Input Devices 6 DISPLAY LAYOUT AND ORGANIZATION .7 6.1 General Considerations 6.2 Display Hierarchy 6.3 Window Management Issues .8 DISPLAY NAVIGATION 7.1 General Considerations 7.2 Navigation Techniques 7.3 Zoom, Pan, and Overlays 10 OBJECT CHARACTERISTICS .10 8.1 General Considerations 10 8.2 Color .10 8.3 Symbols and Shapes 11 8.4 Animation .12 8.5 Text .12 OBJECT DYNAMICS 13 9.1 General Considerations 13 9.2 Data Values 13 9.3 Data Attributes 14 `,,```,,,,````-`-`,,`,,`,`,,` - 10 CONTROL AND SELECTION TECHNIQUES .15 10.1 Object Selection 15 10.2 Command Execution 16 10.3 Error Management 16 v Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale Page 11 ADMINISTRATION 16 11.1 Consistency within a Company 16 11.2 Documentation 16 11.3 Consistency between Control Centers and Remote Locations 16 11.4 MOC (Management of Change) .17 12 SAMPLE DISPLAYS 17 APPENDIX A EXAMPLES APPENDIX A1 EXAMPLE SYMBOL DYNAMICS A1-1 Pumping Units A1-2 Non SCADA Controllabe Valves A1-3 SCADA Controllable Valves A1-4 Way Valves A1-5 Way Valves A1-6 Tank Mixers 19 21 22 23 24 25 26 27 APPENDIX A2 DISCRETE STATE POINTS 29 APPENDIX A3 NUMERIC POINTS 31 APPENDIX A4 SAMPLE STATION DISPLAY .33 APPENDIX A5 SAMPLE SUMMARY DISPLAYS 35 A5-1 Alarm Summary Displays 36 A5-2 Event Summary Displays 37 A5-3 Communications Summary Display 38 A5-4 Database Summary Displays 39 APPENDIX A6 DETAILED POINT DISPLAYS 41 APPENDIX A7 TREND DISPLAYS 43 APPENDIX A8 SPECIAL APPLICATION DISPLAYS 45 `,,```,,,,````-`-`,,`,,`,`,,` - Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale Recommended Practice for Pipeline SCADA Displays Scope 1.1 PURPOSE This Recommended Practice (RP) focuses on the design and implementation of displays used for the display, monitoring, and control of information on pipeline Supervisory Control and Data Acquisition Systems (SCADA) The primary purpose is to document industry practices that provide guidance to a pipeline company or operator who want to select a new SCADA system, or update or expand an existing SCADA system This RP assists pipeline companies and SCADA system developers in identifying items that are considered best practices when developing human machine interfaces (HMI) Design elements that are discussed include, but are not limited to, hardware, navigation, colors, fonts, symbols, data entry, and control / selection techniques 1.2 SCOPE LIMITATIONS It is recognized that each pipeline company has unique operating philosophies and SCADA systems; therefore, not all elements of this recommended practice may be applicable For example: • Some pipeline control centers are a combination of several different SCADA systems • Some of these SCADA systems may not have the developer tools necessary to implement the recommended practices • Some operators may have existing display techniques that bridge over into unique operating philosophies This RP is not all-inclusive It is intended to cover best practices and provide examples for display techniques only, not dictate operational control philosophy or overall SCADA system functionality The reader should have a good working knowledge of pipeline operations and display techniques, and may have to refer to other publications for background or additional information This RP compliments but does not replace other procedures and effective display techniques or industry standards that are used for software development and implementation Regulatory and individual company standards are not addressed in this publication References ASM Consortium Guidelines—Effective Operator Display Design Version 2.01, July 28, 2000 Galitz, W O (1993) User-interface screen design New York, NY: John Wiley & Sons: Amazon.com Gilmore, W.E., Gertman, D.I., & Blackman, H.S (1989) User-computer interface in process control a human factors engineering handbook San Diego, CA: Academic Press Jacko, J., A., & Salvendy, G (1996) “Hierarchical menu design: breadth, depth, and task complexity.” Perceptual and Motor Skills, 82, 1187-1201 Kiger, J I (1984) “The depth and breath trade-off in the design of menu-driven user interfaces.” International Journal of man-machine studies, 20, 201-213 O’Hara, J., Brown, W., Lewis, P & Perensky, J (2002) Human-system design review guidelines (NUREG-0700, rev 2) Washington DC: U.S Nuclear Regulatory Commission Paap, K R (1988) Design of Menus In M Helander (ed.) Handbook of Human-Computer Interaction (pp 205-235) North Holland: Elsevier Science Publishers B.V Perlman, G (1984) Making the right choices with menus Proceedings of INTERACT (pp 291-295) Roske-Hofstrand, R J & Paap, K R (1986) “Cognitive networks as a guide to menu organization: An application in the automated cockpit.” Ergonomics, 29(11), 1301-1311 10 Savage, R E & Habinek, J K (1984) “A multilevel menu-driven user interface: Design and evaluation through simulation.” In J C Thomas & M L Schneider (Eds.) Human factors in computer systems, (pp 165-186) Norwood, N.J.: Ablex 11 Smith, S., & Mosier, J (1986) Guidelines for designing user interface software (ESD-TR-86-278) Hanscom Air Force Base, Massachusetts: Electronic Systems Division, AFSC Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - This RP was created by an API Cybernetics Subcommittee task force, based on industry practices used on liquid pipeline SCADA systems Most participants operate crude, product, chemical, and natural gas pipeline systems API RECOMMENDED PRACTICE 1165 12 Snowberry, K Parkinson, S R., & Sisson, N (1985) “Effects of help fields on navigating through hierarchical menu structures.” International Journal of Man-Machine Studies, 22, 479-491 Definitions 3.1 API: American Petroleum Institute The primary trade association of the oil and natural gas industry, API represents more than 400 members involved in all aspects of the oil and natural gas industry The association draws on the experience and expertise of members and staff to support a strong and viable oil and natural gas industry 3.2 API Cybernetics Subcommittee: The API Cybernetics Subcommittee monitors the field of science concerned with processes of communication and control to provide education and recommended practices to the pipeline industry for monitoring and operating pipelines from a remote location 3.3 Button Bars: Button Bars are used to place fixed links between a series of displays or to provide links to submenus 3.4 client server architecture: In client server architecture, the computing load is distributed among the many clients (individual computers) in a network, drawing information from central servers of the information The opposite of client server architecture is the situation where a central powerful computer does all the processing, feeding the results to dumb terminals which little more than communicate requests and feed back the results processed centrally 3.5 control center: Physical location where controllers monitor and control the pipeline systems A control center typically consists of one or more controller consoles which are manned 24 hours a day, 365 days a year 3.6 controllers: Personnel who are responsible for monitoring and controlling the pipeline system 3.7 dialog box: An interactive message box A temporary window on the screen that contains a set of choices whenever the executing program needs to collect information from the user 3.8 display(s): The visual presentation of text and objects on a monitor 3.9 Gestalt Principles of Perception: Gestalt is a psychology term which means “unified whole.” It refers to theories of visual perception developed by German psychologists in the 1920s These theories attempt to describe how people tend to organize visual elements into groups or unified wholes when certain principles are applied 3.10 hidden text: Information that is not visible (in background) to the Controller until a specific event occurs, at which time the text becomes visible (in foreground) 3.11 hot spot: An area, symbol, or text on a display, that when selected, provides navigation to some predefined display, execution of some command, opening of a new window, etc Synonymous with navigation buttons, poke points, poke boxes, etc 3.12 Human Factors Engineering (HFE): The science of designing systems that are safe, comfortable, effective, and usable The goal is to design systems so end users can avoid frustration, make few mistakes, and experience an increase in productivity 3.13 Human Machine Interface (HMI): A computer workstation normally associated with a graphics workstation that allows interaction between people and end devices 3.14 invalid: An indication of a point state that is undefined, out of range, or otherwise unknown 3.15 Liquid Crystal Display (LCD): A display which utilizes two sheets of polarizing material with a liquid crystal solution between them An electric current passed through the liquid causes the crystals to align so that light cannot pass through them Each crystal, therefore, is like a shutter, either allowing light to pass through or blocking the light 3.16 monitor: The term monitor refers to the hardware used to present SCADA displays to the controller 3.17 navigation button: An image of a button on a computer screen which simulates being “pushed” when clicked by the mouse 3.18 offscan: A term used to describe a point that has been deactivated from the active polling sequence (not scanned or refreshed by SCADA system) 3.19 operator: A term used for a company that monitors and controls a pipeline system 3.20 poke point: The control that is placed on top of an object that causes an action to occur when clicked `,,```,,,,````-`-`,,`,,`,`,,` - Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale 36 API RECOMMENDED PRACTICE 1165 Alarms are indicators of abnormal or unexpected conditions in the system for which the controller is notified through the alarm management system Alarm examples include un-commanded device changes, high and low limit violations, abnormal communication status, and return to normal alarms Alarms can be segregated into different levels of severity Each level should have a unique look and sound An example of a multi-level alarm severity structure could be Critical or High-High (Red), Medium (Yellow), Low (Cyan), Informational (White), and Normal (Green) Unacknowledged and acknowledged alarms should be presented differently Typically, unacknowledged alarms flash and acknowledged alarms not In the Alarm Summary example, each alarm message contains an event time stamp, the name for the point in alarm, text which explains the alarm, and the severity of the alarm Alarm selection may provide immediate access to a more detailed corresponding station display where associated data can be analyzed Different variations of tabular alarm displays can also be provided For example, an unacknowledged alarm summary might display the newest unacknowledged alarms, ordered by severity A system alarm summary might display all outstanding alarms ordered by severity A chronological alarm summary might display all outstanding alarms, displayed in chronological order independent of severity Filtering and sorting may be provided on timestamp, pipeline system, remote, point name, point description, and message text Filtering is typically not provided on the unacknowledged alarm display to minimize the risk of missing an alarm Alarm Summary 04/25/2005 16:27 Time / Date System Station Remote Description Condition State/Value Point Name 13:21:20 13:25:43 13:32:54 14:22:03 14:33:26 PL 02 PL 01 PL 04 PL 02 PL 02 Station A Station A Station A Station A Station A Remote A Remote B Remote A Remote B Remote B Discharge Pressure Batch Interface Sampler Pump Receipt Pressure Cntrl Building Door HI HI ALARM ALARM NORMAL INFO 1430.0 PSI I/F IN ON 133.0 PSI OPEN REMOTE_A_PL02_DSC REMOTE_B_PL01_INTFACE REMOTE_A_PL04_SAMPPMP REMOTE_B_PL02_RECPTPR REMOTE_A_PL02_BLDGDOOR 25-Apr-05 25-Apr-05 25-Apr-05 25-Apr-05 25-Apr-05 System Filter None Description Filter Station Filter None Time Filter Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS None 25-Apr-05 13:20:00 thru 25-Apr-05 15:24:00 Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - Appendix A5-1: Alarm Summary Displays RECOMMENDED PRACTICE FOR PIPELINE SCADA DISPLAYS 37 Appendix A5-2: Event Summary Displays SCADA systems typically capture all alarms, commands and system messages as events The controller may access these events to review activities that have occurred This access is usually provided through an event summary display where each event is a row on the display In this example, each event displayed contains an event time stamp, the point name and description for the point with which the event is associated, and the message text which explains the event Other fields which might be displayed are the remote, pipeline system, and user id of the controller A coloring scheme may also be used to distinguish between alarms, commands, and system events Event Summary 4/25/2005 16:00:00 Time / Date System Station Remote Description Message Point Name 13:21:20 13:21:43 13:21:54 13:22:03 13:22:26 13:22:29 13:22:47 13:23:27 13:23:29 PL 02 PL 02 PL 02 PL 02 PL 02 PL 02 PL 02 PL 02 PL 02 Remote A Remote A Remote A Remote A Remote A Remote A Remote A Remote A Remote A Unit Valve Valve Valve Unit Discharge Pressure Valve Discharge Pressure Discharge Pressure Issued command START by Smith at FPLXOS7 Change to state TRN Change to state OPEN Change to state TRN Commanded change to state RUN Value=527 PSI - HIGH alarm Change to state OPEN Modified HIGH Limit from 400 to 600 by Smith at FPLXOS7 Value=535 PSI - Return to Normal REMOTE_A_PL02_U01 REMOTE_A_PL02_V08 REMOTE_A_PL02_V08 REMOTE_A_PL02_V09 REMOTE_A_PL02_U01 REMOTE_A_PL02_DSC REMOTE_A_PL02_V09 REMOTE_A_PL02_DSC REMOTE_A_PL02_DSC 25-Apr-05 25-Apr-05 25-Apr-05 25-Apr-05 25-Apr-05 25-Apr-05 25-Apr-05 25-Apr-05 25-Apr-05 System Filter PL 02 Station Filter Station A Station A Station A Station A Station A Station A Station A Station A Station A Station A Description Filter Time Filter None 25-Apr-05 13:20:00 thru 25-Apr-05 13:24:00 `,,```,,,,````-`-`,,`,,`,`,,` - Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale 38 API RECOMMENDED PRACTICE 1165 Appendix A5-3: Communications Summary Display Communications summary displays are typically used to provide an overview of the current state of communications between the SCADA system and the field remote Information regarding primary communications for each remote should be provided Summaries also typically include statistics showing recent performance (e.g., hourly, daily and monthly uptime) Another communications summary display may show the status of all backup communications Depending on the complexity, some systems combine the primary and backup communication information on one display In the example, each row represents one remote Percentages for hourly, daily, and monthly up time are illustrated, along with the Remote address and the last scan time The current status is also displayed, along with data quality attributes Communications Summary Remote Remote A Remote B Remote C Remote D Remote E Remote F Remote G Remote H Remote I System Filter DQ O I Status NORMAL NORMAL NORMAL FAIL NORMAL NORMAL DIAL BACKUP NORMAL NORMAL PL 02 Hourly Up Time Pct Current Previous 100.0 100.0 100.0 0.0 99.9 100.0 95.6 100.0 100.0 Status Filter Daily Up Time Pct Current Previous 99.8 100.0 100.0 0.0 100.0 100.0 100.0 98.3 98.4 99.9 100.0 99.8 0.0 99.9 100.0 95.6 100.0 100.0 None Select remote name for control `,,```,,,,````-`-`,,`,,`,`,,` - Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS 04/25/2005 16:27 Not for Resale 99.8 100.0 100.0 0.0 100.0 100.0 100.0 98.3 98.4 Monthly Up Time Pct Current Previous Adrs 99.9 100.0 99.8 0.0 99.9 100.0 95.6 100.0 100.0 99.8 100.0 100.0 0.0 100.0 100.0 100.0 98.3 98.4 Last Scan Time 4/25/05 16:27:40 4/25/05 16:27:40 4/25/05 16:27:40 4/22/05 14:13:40 4/25/05 16:27:40 4/25/05 16:27:40 4/25/05 16:27:40 4/25/05 16:27:40 4/25/05 16:27:40 RECOMMENDED PRACTICE FOR PIPELINE SCADA DISPLAYS 39 Appendix A5-4: Database Summary Displays Database summary displays provide a tabular listing of all the records of the same database type Database summary displays are usually provided for analog, status, accumulator and tank records, but can be configured for any other point type that provides value to a controller The information displayed in these summary displays typically includes the point name, remote, description, current state or value and other pertinent information for each point type In this example, the point name, station, description, analog alarm limits, and current value are listed for each analog point Of the various filter options available, this example is filtered by Point Name (PL02) Analog Summary Point Name REMOTE_A_PL02_DSC REMOTE_A_PL02_SUC REMOTE_A_PL02_CAS REMOTE_A_PL02_TMP REMOTE_B_PL02_DSC REMOTE_B_PL02_SUC REMOTE_B_PL02_CAS REMOTE_B_PL02_TMP Station Station A Station A Station A Station A Station B Station B Station B Station B Station C REMOTE_C_PL02_SUC Station C REMOTE_C_PL02_CAS Station C REMOTE_C_PL02_TMP Station C Point Name Filter PL 02 Station Filter None Description Discharge Pressure Suction Pressure Case Pressure Line Temperature Discharge Pressure Suction Pressure Case Pressure Line Temperature Discharge Pressure Suction Pressure Case Pressure Line Temperature Description Filter 4/25/2005 High-High 500.0 500.0 600.0 80.0 500.0 500.0 600.0 80.0 500.0 500.0 600.0 80.0 None `,,```,,,,````-`-`,,`,,`,`,,` - Select point name for control Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale High 400.0 400.0 500.0 80.0 400.0 400.0 500.0 80.0 400.0 400.0 500.0 80.0 Value 475.0 H 122.0 490.0 65.4 385.0 20.0 LL 725.0 HH 65.4 369.0 76.0 371.0 I 65.1 O Low 100.0 50.0 100.0 60.0 100.0 50.0 100.0 60.0 100.0 50.0 100.0 60.0 Low-Low 50.0 25.0 50.0 60.0 50.0 25.0 50.0 60.0 50.0 25.0 50.0 60.0 16:27:56 `,,```,,,,````-`-`,,`,,`,`,,` - Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale Appendix A6—Detailed Point Displays Detailed point displays are normally accessed from a piping display or database summary display These displays typically provide additional detail not provided on the summary display Each display could be unique based on the database record type In some cases, the display may only provide information while in others it may provide change or control capability For example, analog high and low alarm limits may be entered via an analog detailed point display In this analog point example, detailed information is provided about the point There are also poke buttons displayed to allow enabling and disabling specific alarm limits, or enabling and inhibiting all alarming associated with the point Analog Detail REMOTE_A_PL02_DSC Low-Low Description Discharge Pressure Low 100 System PL02 Value 475 H Station Station A High 400 Remote Remote A High-High 600 Register 40072 Deviation Low 25 EGU PSI Deviation High 50 Min Range Deviation Reset Max Range 1500 Deviation State Normal Deadband 10 Enable High-High/Low -Low Disable High-High/Low -Low 50 Inhibit Alarms Enable High/Low Disable High/Low Enable Alarms Enable Deviation Disable Deviation Manual Realtime DISMISS 41 Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - Point Name `,,```,,,,````-`-`,,`,,`,`,,` - Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale Appendix A7—Trend Displays Trend displays are commonly used to provide a comparison of one or more SCADA points on a real-time or historical basis, which allows the controller to see trends in operations Trends are routinely depicted graphically using lines and symbols Typically, trend displays use the X-Axis to display time, and the Y-Axis to display data values Trend scaling should be appropriately labeled The trend display format and naming conventions should be consistent between all locations When multiple SCADA points can be trended on a single display, the plot of each point should be distinguishable by color and/or line type Consideration should be given to using an unique color and/or line type to indicate data attributes of the SCADA point An example is changing the color of the plot to indicate a communication failure `,,```,,,,````-`-`,,`,,`,`,,` - Capabilities may include zoom and pan ability, the ability to change the start and end time of the point trended, the ability to change the minimum and maximum values of the Y-Axis, the ability to select and view previously defined trends and the ability to define new single and multiple point trend sets 43 Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale Appendix A8—Special Application Displays SCADA systems typically provide customized displays that support special applications Listed below are several types of commonly used displays: `,,```,,,,````-`-`,,`,,`,`,,` - • Metering displays—These provide the controller with a detailed look at a meter’s calculations and scheduling information • Meter Proving displays—These provide the controller with a detailed look at a meter proving results, calculations and meter factors • Computational Pipeline Monitoring (CPM) displays—These are dependent on the type of CPM implemented Three that are commonly used throughout the industry are Line Balance, Volume Balance, and Rate of Change Typically, data provided on these displays include current alarm state and balance, calculation status, alarm status, and deviation values used to define limits for alarming • Batch Tracking displays—These show movement of batches through pipelines Information that might be displayed for each batch include the product, batch ID, gravity, volume, mile post, number of barrels to the end of the section, and estimated time of arrival (ETA) to the end of the section • Hydraulic Gradient displays—These provide a graphical representation of the pressure profiles of the pipeline Elevations, gauged pressures, maximum calculated operating pressures, and calculated line pressures are typical plotted values The graph plots the four pressure points along the distance, or mile post of the pipeline • Tank displays—These provide the tank data in tabular or graphic formats Graphic representations of tanks with color-coding to indicate fill level are sometimes used to provide the controller a quick visual indication of the normal or abnormal level of the tanks Information displayed for each tank can include tank level, tank volume, alarm status, volume to fill or available room Additional information that can be included is product type, flow rate, strap type, percent full, temperature, observed volume, net volume, time to fill and empty, and volume to pump • Scratch Pad displays—These allow the controller to keep miscellaneous notes concerning the pipeline systems operated This might include phone numbers, on-call lists, operational information or shift change notes The display is typically a “notepad” that allows free format text The layout of the notes is the responsibility of the controller The information entered is stored in either the SCADA database or in a text file on the workstation • Help displays—These might be used throughout the entire set of displays wherever additional information is needed For example, it might explain the color schemes and symbols used • SCADA Topology displays—These are typically provided to show the status of the SCADA hardware and connectivity between the hardware This display is sometimes used to switch between the “hot” and “standby” systems at the primary control center It can also be used to switch between the primary control center and a backup control center 45 Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale Effective January 1, 2007 API Members receive a 30% discount where applicable The member discount does not apply to purchases made for the purpose of resale or for incorporation into commercial products, training courses, workshops, or other commercial enterprises 2007 Publications Order Form Available through IHS: Date: ❏ API Member (Check if Yes) Invoice To (❏ Check here if same as “Ship To”) Ship To (UPS will not deliver to a P.O Box) Name: Name: Title: Title: Company: Company: Department: Department: Address: Address: Phone Orders: Fax Orders: Online Orders: 1-800-854-7179 (Toll-free in the U.S and Canada) 303-397-7956 (Local and International) 303-397-2740 global.ihs.com City: State/Province: City: State/Province: Zip/Postal Code: Country: Zip/Postal Code: Country: Telephone: Telephone: Fax: Fax: E-Mail: E-Mail: Quantity Title D11641 STD 1164, SCADA Security $105.00 D11133 Publ 1113, Developing a Pipeline Supervisory Control Center $53.00 D11302 1130, Computational Pipeline Monitoring for Liquids Pipelines $69.00 D11611 Publ 1161, Guidance Document for the Qualification of Liquid Pipeline Personnel $194.00 D11601 Std 1160, Managing System Integrity for Hazardous Liquid Pipelines $159.00 D11621 RP 1162, Public Awareness Programs for Pipeline Operators $77.00 ❏ Payment Enclosed SO★ ❏ P.O No (Enclose Copy) ❏ MasterCard Total Subtotal Applicable Sales Tax (see below) ❏ Charge My IHS Account No ❏ VISA Unit Price Product Number ❏ American Express ❏ Diners Club ❏ Discover Rush Shipping Fee (see below) Shipping and Handling (see below) Credit Card No.: Total (in U.S Dollars) Print Name (As It Appears on Card): ★ Expiration Date: Signature: To be placed on Standing Order for future editions of this publication, place a check mark in the SO column and sign here: Pricing and availability subject to change without notice Mail Orders – Payment by check or money order in U.S dollars is required except for established accounts State and local taxes, $10 processing fee, and 5% shipping must be added Send mail orders to: API Publications, IHS, 15 Inverness Way East, c/o Retail Sales, Englewood, CO 80112-5776, USA Purchase Orders – Purchase orders are accepted from established accounts Invoice will include actual freight cost, a $10 processing fee, plus state and local taxes Telephone Orders – If ordering by telephone, a $10 processing fee and actual freight costs will be added to the order Sales Tax – All U.S purchases must include applicable state and local sales tax Customers claiming tax-exempt status must provide IHS with a copy of their exemption certificate Shipping (U.S Orders) – Orders shipped within the U.S are sent via traceable means Most orders are shipped the same day Subscription updates are sent by First-Class Mail Other options, including next-day service, air service, and fax transmission are available at additional cost Call 1-800-854-7179 for more information Shipping (International Orders) – Standard international shipping is by air express courier service Subscription updates are sent by World Mail Normal delivery is 3-4 days from shipping date Rush Shipping Fee – Next Day Delivery orders charge is $20 in addition to the carrier charges Next Day Delivery orders must be placed by 2:00 p.m MST to ensure overnight delivery Returns – All returns must be pre-approved by calling the IHS Customer Service Department at 1-800-624-3974 for information and assistance There may be a 15% restocking fee Special order items, electronic documents, and age-dated materials are non-returnable `,,```,,,,````-`-`,,`,,`,`,,` Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale There’s more where this came from The American Petroleum Institute provides additional resources and programs to the oil and natural gas industry which are based on API® Standards For more information, contact: ã API Monogramđ Licensing Program Phone: Fax: 202-962-4791 202-682-8070 ã American Petroleum Institute Quality Registrar (APIQRđ) Phone: Fax: 202-962-4791 202-682-8070 ã API Spec Q1đ Registration Phone: Fax: 202-962-4791 202-682-8070 • API Perforator Design Registration Phone: Fax: 202-962-4791 202-682-8070 • API ISO/TS 29001 Registration Phone: Fax: 202-962-4791 202-682-8070 • API Training Provider Certification Program Phone: Fax: 202-682-8490 202-682-8070 • Individual Certification Programs Phone: Fax: 202-682-8064 202-682-8348 • Engine Oil Licensing and Certification System (EOLCS) Phone: Fax: 202-682-8516 202-962-4739 • API PetroTEAM™ (Training, Education and Meetings) 202-682-8195 202-682-8222 Phone: Fax: Check out the API Publications, Programs, and Services Catalog online at www.api.org Helping You Get The Job Done Right.® `,,```,,,,````-`-`,,`,,`,`,,` - Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - 01/07 Additional copies are available through IHS Phone Orders: 1-800-854-7179 (Toll-free in the U.S and Canada) 303-397-7956 (Local and International) Fax Orders: 303-397-2740 Online Orders: global.ihs.com Information about API Publications, Programs and Services is available on the web at www.api.org 1220 L Street, NW Washington, DC 20005-4070 USA 202.682.8000 Copyright American Petroleum Institute Provided by IHS under license with API No reproduction or networking permitted without license from IHS Product No D11651 `,,```,,,,````-`-`,,`,,`,`,,` - Not for Resale
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