Produce final agreed Worksheets and place in SAFOP
Data File.
•
Circulate SYSOP
Data File (either Initial or Final) to an agreed distribution.
SAFOP GUIDELINES
Doc. Ref.: QSP-FE-03-22August 2001 Page 47
APPENDIX 3 – CONTROL ROOM OPERATOR'S MAIN TASKS QUESTIONNAIRE GENERAL
The following questionnaire has been prepared under three pleadings, which are consideredto be the Control Room Operator's Main Tasks. These are:
•
Normal Operator Duties (Monitor or Check).
•
System Switching (e.g., Plant Remote Operation).
•
Abnormal or Emergency Conditions (e.g., Plant Failure, Loss of Supply,Commissioning and System Outages).In the following questions, the word 'Display' refers to all methods of giving information tothe operator, the word 'Control' applies to all means by which the operator givesinstructions.
CONTROL OPERATOR QUESTIONNAIRENormal Operator Duties
Under normal duties the operator will:
•
Monitor or Check Displays.
•
Make Decisions.
•
Take Actions.Monitor or Check DisplaysAre all displays including VDUs and Mimic Diagrams easily readable with clear identifiableinformation?Is all relevant information supplied? Is redundant information kept to a minimum?Is there an Alarm List available on VDUs?Is there a 'Banner' area for incoming alarms? Is confusing paging of VDU displaysavoided?Are Audio Indicators for various functions easily distinguishable?Are there sufficient VDUs so that all information required at a given time can be
displayedsimultaneously?Is the operator able to initiate routine logging of specific items of plant in terms of measuredvalues at regular intervals?Is it possible to easily set and alter High and Low Limit Alarms on measured values?Is it possible for an operator to easily adjust setting factor and dead band area on measuredvalues?Is any change of state taking place on the power network displayed regardless of whetherrelevant substation or plant has been switched to ‘Local’?-cont.-Are colour codes and any other such
conventions used in displays readily obvious in meaning andeasy to learn?
SAFOP Guidelines
Doc. Ref.: QSP-FE-03-22August 2001 Page 48
Are colour guns on the VDUs permanently monitored?Can operators initiate regular checks of the SCADA system by routine operation of a dummy circuitbreaker at each substation? (Also possibly dummy analogues).Can a page of VDU information is easily transferred to hard copy printout on a logging printer(regardless of colour)?Does
acceptance of incoming alarm information NOT remove such information from display?
Is there adequate monitoring of the SCADA system itself? (Monitoring of SCADA system – indications of on-line computer, Hot standby/off-line computer, Healthy UPS system, and Regulartransmissions over standby routing to substations) i.e., is a Watchdog panel provided?Make DecisionsBased on information received from the overall
monitoring of a system, can operators makedecisions related to?
•
Changing Transformer Tap Positions?
•
Opening and Closing Circuit Breakers?
•
Generator Output?
•
Overload Conditions on Transformers and
•
OHL Voltage Levels?Can the operator be assisted at arriving at these decisions by having rapid and secure access tocommunication with Generator Operators, Field Staff,
Administrative Staff, Senior AuthorisedElectrical Persons?Is information, upon which decisions are based concerning plant, derived from the plant componentitself as far as possible?Take ActionsIs there adequate 'Tell Back' responses to actions performed, such as:
•
Transformer Tap Changing?
•
Circuit Breaker Operation?
•
Reset of Trip Relays?
•
Start and Stop Transformer Cooling Fans?Can any incorrect selection be easily cancelled prior to final actuate signals being sent?Are there full and adequate procedures laid down, and are these easily understood even bypersonnel unfamiliar with the system.
System Switching
All previous questions under Normal Operations are relevant and applicable in the case of systemswitching, plus the following.-cont.-Are there formal procedures set out such as preparation of switching programs andagreement with field staff over these schedules prior to implementation?Will the safety aspects of system switching be included within the operator's responsibilitiessuch that he formally enters and logs details of documents, (Electrical Permits to Work,etc.) application of Circuit Main Earth and implementation of ESR requirements?
SAFOP GUIDELINES
Doc. Ref.: QSP-FE-03-22August 2001 Page 51
Will the substation be subject to the ESR when the last connection is to be made
toconductors that can be made alive from the system?Will a Senior Authorised Electrical Person (SAEP) become involved in the protection andvoltage pressure testing before the substation is connected to the system?Will SPDC provide technical staff to monitor turnkey contractors' staff when substation ispartially commissioned?Has the operator the training and understanding to identify abnormal plant conditions andemergency
situations, e.g.:
•
A tap changer stuck between taps?
•
A circuit breaker locked out?
•
Relay flag operations?
•
Low battery volts?
•
Low oil levels?
•
Buchholz gas alarms, etc.?Has the operator been told not to climb any structure without safety documentation?Has the operator training, understanding and instructions to carry out minor tasks on plant,and equipment, e.g.:
•
Reset relay flags and indicators?
•
Test cooling fans?
•
Reset maximum reading instruments?
•
Change silica gel breathers?Have the operator instructions to inspect and check:
•
Portable earths?
•
Posts, chains, ropes, etc. (temporary barriers in compounds)?Is the operator aware that when performing battery inspections, smoking and the presenceof naked flames are prohibited in battery rooms or in the vicinity of battery installations?
System Switching (Operating Plant)
When performing switching operations, has the operator been made familiar and receivedtraining on:
•
Operation of 132 kV Disconnector?
•
Operation of 132 kV Earth Switches?
•
Operation of 132 kV Circuit Breakers (Local)?
•
Operation of 33 kV Circuit Breakers (Local) including isolating, locking-off andearthing both circuit and busbars?
•
Operation and control of transformer tap changers?
•
Application of Circuit Main Earths to 132 kV and 33 kV coppers?
•
Operation of Tap Change Controls?
•
Operation of Low Voltage Switchboards?Has the operator been trained in the use of correct voltage detectors before applying CME’sto?
•
Exposed coppers?
•
Switchgear spouts?
SAFOP Guidelines
Doc. Ref.: QSP-FE-03-22August 2001 Page 52
7. ENGINEERING STANDARD USER-COMMENT FORM Engineering Standard User-Comment Form
If you find something that is incorrect, ambiguous or could be better in a standard, write yourcomments and suggestions on this form. Send the form to the Document custodian (CorporateDiscipline Head Electrical).The form has spaces for your personal details. This lets the custodian ask you about yourcomments and tell you about the decision.
Standard Details
Title Issue Date:Number:Page number: Heading Number: Figure Number:
Comments:Suggestions:User’s personal details Name: Ref.Ind:
Signature: Date:Phone:
Custodian Actions RecdDate:
Decision:
Reject:Accept, revise at next issue:Accept, issue temporary amendmentSign:
Ref.Ind:Date:Comments:OriginatorAdvised:Date: Sign:Advised:Date: Sign: