18422 version 2
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Utilise a distributed control system in a petrochemical workplace
Level
3
Credits
4
Purpose
This unit standard is for people employed in the petrochemical industry.
People credited with this unit standard are, in a petrochemical workplace,
able to demonstrate knowledge of and operate a distributed control system,
and interpret process data.
Subfield
Petrochemical Industry
Domain
Petrochemical Process and Product Management
Status
Registered
Status date
20 February 2009
Date version published
20 February 2009
Planned review date
31 December 2013
Entry information
Open.
Replacement information
This unit standard replaced unit standard 9595.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
NZ Motor Industry Training Organisation (Incorporated)
(MITO)
Accreditation and Moderation Action Plan (AMAP) reference
0114
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
This unit standard is intended for, but is not limited to, workplace assessment. While
all performance criteria must be met it is noted that all range statements within this
unit standard are indicative and dependent on enterprise and site specific equipment,
procedures, and practices. Any queries can be directed to the NZ Motor Industry
Training Organisation (Incorporated) (MITO).
 New Zealand Qualifications Authority 2016
18422 version 2
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Definitions
Distributed control system includes: SCADA, Man Machine Interfaces (MMI).
Site requirements mean the site specific documented methods for performing work
activities and include health, safety, environmental, and quality management
requirements. They may refer to manuals, codes of practice, or policy statements.
Elements and performance criteria
Element 1
Demonstrate knowledge of and operate a distributed control system in a petrochemical
workplace.
Performance criteria
1.1
The distributed control system is utilised to provide the operator with up-to-date
information of process conditions.
Range
1.2
Control system records are identified and explained in terms of their use.
Range
1.3
terminology, abbreviations, trends, deviations, alarm scanning, tag
searches, operator change log, one line point display, group
displays.
graphics, historical data, trends, groups, alarm scanning, alarm
lists, hardware alarm lists, parameters, printing, operator logs.
Control system alarms are identified and explained in terms of function.
Range
hardware, critical, advisory, hierarchy of alarms.
1.4
Control system faults, their consequences, and subsequent actions are
identified and explained in accordance with site requirements and
manufacturer’s recommendations.
1.5
Controller modes are identified and explained to ensure the effective control of
the process.
Range
1.6
auto, manual, cascade, remote, on/off, enable/disable.
Control system adjustments are demonstrated in accordance with site
requirements.
Range
set points, controller limits, outputs, alarm points, modes.
 New Zealand Qualifications Authority 2016
18422 version 2
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Element 2
Interpret process data in a petrochemical workplace.
Performance criteria
2.1
Historical data is accessed, assessed, and used to assist in problem solving
and planning in accordance with site requirements.
2.2
Alarms are interpreted and explained in terms of required actions in accordance
with site requirements.
Please note
Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP also includes useful information about special requirements for organisations
wishing to develop education and training programmes, such as minimum qualifications for
tutors and assessors, and special resource requirements.
Comments on this unit standard
Please contact the NZ Motor Industry Training Organisation (Incorporated) (MITO)
info@mito.org.nz if you wish to suggest changes to the content of this unit standard.
 New Zealand Qualifications Authority 2016