for various drives/ valves /equipments in main AHP control room. For example, keep it simple, make the HMI operator friendly, and thoroughly document the logic are philosophies. These cabinets shall accommodate I/O cards, relays, interfacing equipments etc. Control Philosophy document could mean a number of different things. Functional job titles are common in organizations, and follow the philosophy that the best title for a particular position is … b.         Caustic solution, stored in over ground tanks, will be led remote manually   by gravity to the caustic measuring tanks for anion, mixed bed units to fill up to the desired level. The conductivity cell in the rinsing line shall be automatically isolated during the first half of the rinsing cycle and shall be connected automatically during the second half of rinsing cycle when the conductivity is less than 100 micromhos/cm excess over the rinse water conductivity. The controller receives the input, optionally validates it and then passes the input to the model. a. Control Philosophy 8/28 Fennagh WWTP – Ref No. how the pumps will operate. For example, keep it simple, make the HMI operator friendly, and thoroughly document the logic are philosophies. Subsequent transfer of caustic from the measuring tanks to the ion-exchanger units as required in regeneration operation is however automatic. The functional flow diagram shows functions connected by data and control flow arrows. i hope i have explained. Actually, the functional requirement document should be well designed, clear and easy to understand the system for the readers. Tripping of / emergency stop of dries motors locally shall be permissible irrespective of position of remote/local selector switch. The difference between a functional job title and an administrative title is relatively simple to understand. However, the term is sometimes used synonymously with IRS, and even to embrace the information content of an IRS and an IDD together. After completion of regeneration of one cation and one anion exchanger, the waste generated during regenerations will be thoroughly recirculated in the neutralizing pit and if necessary, acid/alkali solution will be added to make the waste slightly alkaline. Functional Vs technical Spec s A functional specification describes how a product will work entirely from the user's perspective. The term ICD – Interface Control Document, Interface Control Description, Interface Control Drawing – is common. of  Raw Water system and associated clarified sump pumps, Raw water chlorination system, service water pumps, CT make up pumps, Potable water pumps control, DM feed pumps etc.shall be provided from DM plant control room. vii)      A graphic depicting the complete plant process operations shall be   designed properly and be available on CRT. Is this for school, or for a customer? In the case of a revamp, indicate that the initial philosophy includes a functional replacement in-kind with some enhanced alarm and data historian features. i)         The chlorination plant shall be controlled manually from local control panel located in chlorination system main control building. For overall operation and control of entire Ash Handling Plant with fly ash system, bottom ash system, ash water and slurry pumping system and ash disposal system, a control desk along with control panels mimic will. Vibration monitoring system( for coal crushers). Tip 8: Organize your requirements You may sometimes encounter functional specifications written in paragraphs, but this format is not recommended. Following Equipment will come under interlock scheme and can be started/stopped from control desk with indication on CRT and mimic panel with fault nnunciation facility: a. Proportional-only control – why won’t it work right? The PLC system shall be an integrated control and data acquisition system for providing control & monitoring of Plant water system from a            DM plant   Control Room. The operator will then select the particular vessel to be regenerated through option and selected for regeneration. Kalu Idika Awa ... concept as those features of the organization that serve to control or distinguish its parts‖, Gibson, Ivancevich, Donnlly Jr and Konopaske (2003). Project Functional Requirements template v)         Each air dryer shall be provided with independent microprocessor PLC, heater, set of absorber . Provision shall be made to operate the booster pumps through selector switch. Each weighing bridge shall have built in diagnostic and weight measurements software .The weigh bridges shall be controlled from the panel located in control room at Tripler complex.. Control of Full-Case Merging Conveyors.doc, Control of Full-Case Merging Conveyors.pdf, http://www.urswriter.com/ControlOper...hilosophy.html, http://www.urswriter.com/ProcessDescriptions.html, 3 way Control Valve from Siemens with Beckhoff PLC. ii)        The traveling Trippler and its associated drives shall be controlled from local panel located near the bunker floor MCC room .The system cabinet for remote I/O cards relays and interfacing equipment etc. The philosophy behind a framework, such as ITIL, is to build a conceptual model of how each area of the business works. Operational Controller Vs. Financial Controller. Functional specification defines what the control system should do and what functions and facilities are to be provided in the system. Functional managers generally have technical expertise and oversee the day-to-day operations of an organizational unit within a company, such as a division, department or section. vii)      All instruments like vacuum/pressure switches, pressure gauges transmitter, level ontrollers, level switches/indicators, level probes, flow indicators and any other special instruments for remote measurements in the    main control room shall be provided by the contractors. These functional analysts, owing to their expertise in a particular field are fully aware of the attributes, characteristics and functions of their field. Project management exists in many forms in different companies and the level of empo… Local  control panel-1 shall be placed at fuel oil pump house for control and operation of HFO/LSHS & LDOunloading, storage and transfer operation. We have broken this need down into two broad categories: Functional Support and Technical Support. Functional managers often assign projects and ensure they align with the … v)         The system cabinet associated with various local controls shall be   located near the local control panels. iv)       Stacker Reclaimer shall be provided with PLC system. Non-Functional testing checks the Performance, reliability, scalability and other non-functional aspects of the software system. This document is usually generated by the process engineer and directed to the control systems engineers to assist them in designing their program logic and coding activities. 01 1. These pumps shall,however, trip automatically in the event of high level in the respective oil (LDO or HFO/LSHS) storage tank. I suspect what the owner really wants are a functional description or loop descriptions. viii)     Separate conductivity measurement, silica mesurement and pH measurements shall be employed for ensuring the various parameters in the effluent and in the rinse line of caution, anion and mixed bed exchanger units for normal and rinsing operation. Functional Analysis And Control Theory document is now easy to get to for free and you can access, admission and save it in your desktop. iv)       The drain oil pump will start/stop automatically on high/low level initiation. The standby pump shall also operated automatically in case the operating pumps trip. v)         The sludge sump shall be provided with low and high level switch and selected pump whichever in auto shall start automatically when sludge sump level is high and stop automatically when sump level is low. ii)        The sulphuric acid dosing pumps operation shall be auto and  manual from local control panel. At a minimum, an FDS will contain an organized list of requirements that can be used for… We do not include the how of the design or solution yet. Tripping of drive motors from local panel shall be permissible irrespective of the position of local-remote selection option. vi)       The chlorination of potable water system shall be separately carried out through chlorine cylinder .This arrangements is located near by DM plant building .The operation &control is similar to above and operated through a local control panel located there. b. Before writing about any control method or control "philosophy", you first have to STUDY and LEARN what and how the controls should operate. It is defined as “the process by which managers influence the members of the organisation to implement […] Specifications are used to develop functional control specifications for plant subsystems. Functional analysis is the next step in the Systems Engineering process after setting goal and requirements. 1.1 DESCRIPTION The Control Narrative describes the control philosophy and lists the variables used in the control program. In the auto mode ,the rate of acid dosing shall be controlled by auto adjusting of the stroke of the pumps by sensing of ph of circulating water. The idea of using a PLC-based system rather than a DCS has become a philosophical and technical debate in the industry. It is the cornerstone of how the system will operate. For local operation in the Bottom Ash area one (1) no. Functional specifications can help internal projects run more smoothly. Operation shall be controlled manually from local panel. c.         All operations in items (a) and (b) will be controlled manually from the local panel. Unloading, Preparation and Transfer of Alkali. Despite the general belief that the premier league is the most competitive around Europe, Chelsea won the league in 2016/17 with 7 points to spare after leading by 11 points during … Read More "Functionality Vs Philosophy" Many functional specification documents are written in Microsoft Word, however, Google Docs tends to allow for better version control, something which is crucial in product development. A control philosophy solidifies basic definitions, principles and processes during the design and implementation of a process. A functional specification can better define a control system’s requirements Picture this: Your brand new desalinization plant takes up to four hours to start, and that is if the one operator who has a piecemeal understanding of the controls is available. Control philosophy is a written description of the process with an emphasis on how it should be operated and controlled. Most of those become professors of philosophy, which means that their professional lives are devoted to research and teaching in philosophy. For (an avowedly simplistic) example, a functionalist theory mightcharacterize painas a state that tends … The OCS control philosophy is based on the following main statements within the AS Specification: - Requirement #1: ‘The plant shall be automated as far Stand-by pump shall start automatically whenever any operating pump trips due to any fault (mechanical/electrical) or discharge header pressure goes low. Functional Vs Non-Functional Testing: Functional Testing Non-Functional Testing; Functional testing is performed using the functional specification provided by the client and verifies the system against the functional requirements. It doesn't care how the thing is implemented It talks about features It specifies screens, menus, dialogs, and so on. Although the job title of controller may bring a certain type of financial officer to mind, there are actually two different jobs that can bear the name. ADVERTISEMENTS: In this article we will discuss about:- 1. Function specification provides a list of design objectives for the control system. These pumps trip automatically when the level in the source storage tank goes low or the level of respective day oil tank goes high. v)         Local emergency stop push button shall be provided for all electrical drives. The variables include parameters measured by field instruments; status signals from pumps, valves and other equipment; and information passed be tween the field instruments, equipment, and the smart relay. The control & instrumentation shall be through microprocessor based PLC system for the entire Coal handling plant covering the total functional requirement  of sequence control, interlock and protection, monitoring, alarm , data logging etc. The SV-4 addresses human and system functionality. vi)       The progress of the sequence shall be displayed to the operator through suitable means. It describes a software system or its component. v)         The control panel shall be provided with adequate nos. A function is nothing but inputs to the software system, its behavior, and outputs. AHP Central Control Room will house system cabinets in addition to control desk. Drive status feedback (ON/OFF). Approach your problems from the right It isn't that they can't see the solution. end and begin with the answers. Functional decomposition breaks down a large, complex process into an array of smaller, simpler units or tasks, fostering better understanding of the overall process. iii)       The system cabinet associated with various local controls shall be located near the local control panels. ii)        The local control panel shall house PLC hardware (processors, I/O cards, relays, cables etc) LCD screen , Alarm annunciators configured in PLC. More time and detail upfront also can help prevent changes—sometimes known as ‘feature creep’—later in a project that could push it beyond original requirements. Suitable alarm/annunciation system will be provided to warn of any mal-functioning g of the ash handling system. iii)    The transfer pumps to day tank shall be started manually from push buttons in the above local control panel-1. More precisely,functionalist theories take the identity of a mental state to bedetermined by its causal relations to sensory stimulations, othermental states, and behavior. Hiten Dalal’s Pipeline Feed System Example. When required pH of waste solution has been reached, the waste solution will be pumped to the effluent treatment plant area and the effluent shall conform to IS-2490. All drive motor shall also be provided with arrangement of local stopping. The debate is also intense in companies with a low tolerance for ambiguity. i)         In order to have ease of operation and maintenance, the l Control      Room   of DM plant shall have control desk in which the operating station along with CRT and keyboard will be mounted and the control panel shall have the Plant water system  mimic, indicating lamps, push buttons, control            switches, indicating instruments/recorders etc. The functional specification defines the process automation requirements and is the basis for design specifications. i)         Two no  control panels (Local  control panel-1  & Local control panel-2) are envisaged for control and operation for fuel oil unloading, storage & transfer system. The PLC system shall be an integrated control and data acquisition system for providing control & monitoring of Plant water system from a, For overall operation and control of entire Plant water system, Temperature of pumps thrust bearing (HT drives only)———-High, Bearing vibration (for HT drives only)———-High. The Control System shall be comprising a Processor Unit, Input./Output   modules, LCD screen display The PLC l will be housed in local control panel located in compressor room/compartment. 1728 May 2008 Rev. All necessary instruments /controller and interlock /protection /monitoring and sequential logics controls shall be provided for implementation andare achieved by PLC. Functionalism is the doctrine that what makes something a thought,desire, pain (or any other type of mental state) depends not on itsinternal constitution, but solely on its function, or the role itplays, in the cognitive system of which it is a part. 1728 May 2008 Rev. ( control for CW water treatment, Raw water treatment). Operational Controller Vs. Financial Controller. The PLC system shall be an integrated control and data acquisition system for providing control & monitoring of Ash handling plant from a Main AHP Control Room. viii)     DM plant PLC system shall be provided with suitable communication gateway for monitoring through DDCMIS in central control room. b.         Hydrochloric acid, stored in over ground tanks, will be led remote manually by gravity to the acid measuring tanks for cation, mixed bed units to fill up to the desired level. Particular MVC designs can vary significantly from the traditional description … i)         In order to have ease of operation and maintenance, the Central Control        Room of AHP shall have control desk in which the operating station along with CRT and keyboard will be mounted and the control panel shall have the AHP mimic, indicating lamps, push buttons, control switches, indicating instruments/recorders etc. These functional relationships are also illustrated by the diagram in figure 1. g.         Following equipment will be operated from its local panels without any indication in control desk and mimic. One of the most important features is that it documents the process operation as designed and seen through the eyes of the process engineer and maintains the process knowledge in it for future readers and users of the operational unit. for the Traveling Trippler drives and equipment shall be located in its MCC room to provide status indication /alarms for traveling Tripler operation in the main CHP control room. Requirements vs Specifications » 8 Types of Specifications » Functional vs Behaviorial . Process Description Inlet screening Flow enters the inlet works in … located in the fuel oil unloading pump house. ii)        The following local control panels are envisaged .which are  located near their associated system. INLET WORKS 1.1. h.         All equipment systems and accessories supplied shall be from the latest proven product range of a manufacturer. 15.4.4    Control philosphy  for compressed air system. x)         Although the basic demineralising process is semi-automatic in nature, following operations shall be performed manually. 15.4.1 CONTROL PHILOSPHY OF COAL HANDLING PLANT. The control & instrumentation shall be through microprocessor based PLC system for the entire Plant water system covering the total functional requirement of sequence control, interlock & protection, monitoring, alarm data logging etc. iii)       Provision shall also be given for local operation of pump/drives from control Box. a. That is usually the big stumbling block. c)         Chlorination plant local control panel for potable water system. The remote I/Os relays, interfacing equipment etc. Each compressor shall be suitable for start up and operation of a second or third operating with the first compressor in operation at all load with no instability in performance. a)         Raw water system local control panel, b)         Chlorination plant local control panel for raw water treatment and  CW water treatment. The operation of plant water system will be possible in Auto / Semi-auto / manual mode. During a workshop, the SI can discuss and diagram (whiteboard) what the equipment and process will do to frame the requirements gathering in terms relevant to operations. ix)        One communication gateway shall be provided by hooking up the system with             DDCMIS for monitoring from central control room. The key word in this definition is control. Then you simply describe how the controls should operate. The entire Plant water system will be controlled from the following control points: For overall operation and control of entire Plant water system  i.e.Raw water system, Chlorination plant for raw water system and DM plant system, a control desk along with control panels mimic will be provided at the DM plant Control Room. Too much detail is not good either. A control philosophy solidifies basic definitions, principles and processes during the design and implementation of a process. During regeneration, the progress of different sequence/sub-process shall be displayed to the operator in the form of step number as well as step description  which is in progress, the set time for that. The Dosing pumps ,Tank  agitator, Sludge pumps and clarifloculator bridge pumps  can be   operated from remote (i,e.PLC) as well as local control panel. Functional relationships are also illustrated by the level in neutralization pit reaches very.... 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