18419 version 2
Page 1 of 4
Operate and maintain gas filtration equipment on a gas transmission
pipeline system
Level
4
Credits
3
Purpose
This unit standard is for people working, or intending to work, in the gas
transmission industry.
People credited with this unit standard are, on a gas transmission pipeline
system, able to: locate, identify, and interpret procedures for operating and
maintaining gas filtration equipment, and explain associated hazards;
operate and maintain gas filtration equipment; respond to deviations from
normal conditions; and recommission gas filtration equipment.
Subfield
Gas Industry
Domain
Gas Transmission Operations
Status
Registered
Status date
22 May 2009
Date version published
22 May 2009
Planned review date
31 December 2014
Entry information
Prerequisite: Unit 18415, Demonstrate knowledge of gas
filtration, and gas filtration and ancillary equipment, in
the gas transmission industry, or demonstrate equivalent
knowledge and skills.
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
Performance of the elements of this unit standard must comply with relevant site
requirements and the following legislation and documentation:
Health and Safety in Employment Act 1992;
Health and Safety in Employment (Pipelines) Regulations 1999;
 New Zealand Qualifications Authority 2016
18419 version 2
Page 2 of 4
NZS/AS 2885.1:1997 Pipelines – Gas and liquid petroleum – Design and
construction.
2
Definition
Company procedures refer to the documented methods for performing work activities
and include health and safety, environmental, site requirements, and quality
management requirements. They may refer to manuals, codes of practice, or policy
statements.
Elements and performance criteria
Element 1
Locate, identify, and interpret procedures for operating and maintaining gas filtration
equipment, and explain associated hazards on a gas transmission pipeline system.
Performance criteria
1.1
Company procedures for operating and maintaining gas filtration equipment are
located, and are interpreted in relation to specified job requirements.
1.2
Job instructions and system specifications are confirmed in accordance with
company procedures.
Range:
1.3
instructions include but are not limited to – site location, consents.
Potential hazards associated with the operation and maintenance of gas
filtration equipment are explained in accordance with company procedures.
Range
may include but are not limited to – flammable product, high
pressure, loss of gas supply to customer, hazardous area
consideration, contamination, damage to downstream equipment.
Element 2
Operate and maintain gas filtration equipment on a gas transmission pipeline system.
Performance criteria
2.1
Communication of the intended work activities is carried out with appropriate
personnel prior to commencing work in accordance with company procedures.
Range
2.2
may include but is not limited to – customer, control operator, area
technician.
Methods of isolating the filtration system from service without disrupting the gas
supply are carried out in accordance with company procedures.
 New Zealand Qualifications Authority 2016
18419 version 2
Page 3 of 4
2.3
Filter elements are inspected, and if required replaced, in accordance with
company procedures.
Range
2.4
Incorrect application and operation of filtration system components are
described in terms of consequences.
Range
2.5
may include but is not limited to – differential pressure, valve
position, local indicators, manufacturer’s instructions, liquid levels,
visual inspection, filter element type, filter element orientation.
may include but is not limited to – leaks, filter element damage,
ineffective filtration, damage to down stream equipment, flow rate
restrictions.
Preventative maintenance and routine procedures are carried out in accordance
with company procedures.
Range
may include but is not limited to – site specific maintenance
system, filter monitoring, corrosion and coating inspections,
thermal relief;
routine procedures may include but are not limited to – log
keeping, vessel certification inspections.
Element 3
Respond to deviations from normal conditions of gas filtration equipment on a gas
transmission pipeline system.
Range
may include but is not limited to – alarms, leaks, filter element damage,
corrosion damage.
Performance criteria
3.1
Deviations from normal operating conditions are identified, and the steps to
avoid and recover from them are described in accordance with company
procedures.
3.2
System specifications are identified and applied to the equipment being
repaired, in accordance with system requirements.
Range
part number, pressure rating, location, condition, size, position,
maximum flow-rate.
3.3
Components and component parts are sourced, fitted, and adjusted in
accordance with manufacturer’s instructions.
3.4
Consequences of incorrect part selection and repair of equipment, and the
steps to avoid them, are described in accordance with company procedures.
Range
may include but are not limited to – leaks, ineffective filtration,
pressure rating degradation, incompatible materials for product.
 New Zealand Qualifications Authority 2016
18419 version 2
Page 4 of 4
Element 4
Recommission gas filtration equipment on a gas transmission pipeline system.
Performance criteria
4.1
Communication of the intention to place the gas filtration system back into
service is carried out with appropriate personnel in accordance with company
procedures.
4.2
Gas filtration and ancillary equipment is purged and recommissioned in
accordance with company procedures.
4.3
Gas filtration and ancillary equipment is tested for integrity in accordance with
company procedures.
4.4
Disposal of used materials is carried out in accordance with company
procedures to ensure there is no fire or environmental risk.
Range
4.5
filter element, cleaning material, residual dust and debris.
Documentation related to monitoring and maintaining the gas filtration
equipment is completed and communication to all appropriate personnel is
carried out in accordance with company procedures.
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