19417 version 2
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Demonstrate knowledge of gas testing in a petrochemical workplace
Level
2
Credits
3
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: gas testing requirements, associated
terminology, site specific hazards, and types of gas testing equipment and
their use.
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.
Accreditation
Evaluation of documentation by NZQA.
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
19417 version 2
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2
Definitions
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.
WES refers to Workplace Exposure Standards and Biological Exposure Indices for
New Zealand published frequently by the Department of Labour and available at
http://www.osh.dol.govt.nz.
Elements and performance criteria
Element 1
Demonstrate knowledge of gas testing requirements, associated terminology, and site
specific hazards in a petrochemical workplace.
Performance criteria
1.1
Reasons for gas testing are identified and explained in accordance with site
requirements.
1.2
Hazards associated with oxygen depletion are identified in accordance with site
requirements.
1.3
Terms associated with gas testing are explained in accordance with site
requirements.
Range
lower explosive limit, upper explosive limit, vapour density, flashpoint, WES-ceiling, WES-time weighted average, WES-short term
exposure limit.
1.4
On-site hazardous gases are identified and their hazards explained.
1.5
Site specific confined space areas and their associated hazards are identified.
Element 2
Demonstrate knowledge of types of gas testing equipment and their use in a
petrochemical workplace.
Performance criteria
2.1
Types of gas detectors are identified and their principles of operation explained.
Range
Draeger-Tube-type, electrochemical sensors, catalytic sensors,
infrared sensors.
 New Zealand Qualifications Authority 2016
19417 version 2
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2.2
Limitations associated with gas detectors are identified and explained in
accordance with manufacturer’s instructions.
Range
oxygen-rich or oxygen-free atmospheres, liquids, calibration, fit for
purpose, atmospheric temperature, sample temperature, sample
pressure, cross sensitivity, contaminants.
2.3
The units of measurement for site specific gas detectors are described in terms
of unit name and the derivation of the units.
2.4
The measurement range of site specific gas detectors is identified in
accordance with manufacturer’s recommendations.
Range
switchable setting on electronic analysers, concentration limits for
gas detection tubes, limits of detection, test accuracy.
2.5
Alarm set points for site specific gas detectors are identified in accordance with
site requirements.
2.6
Pre-start checks for site specific gas detectors are identified.
Range
calibration, functional tests, battery testing, charging and deep
cycling, chemical or detector replenishment.
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