9536 version 4
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Undertake petrochemical wellhead maintenance activities under
supervision
Level
3
Credits
4
Purpose
This unit standard applies to operational activities carried out on producing
wellheads.
People credited with this unit standard are, under supervision, able to:
establish the symptoms and causes of wellhead faults; prepare for the
removal and dismantling of wellhead items and components; contribute to the
removal of items and components at a petrochemical wellhead; replace
wellhead components and component parts; assemble wellhead components
and component parts; and adjust and test wellhead component parts in
restored equipment.
Subfield
Petrochemical Industry
Domain
Petrochemical Well and Wellhead Operations
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 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, manufacturer's recommendations, instructions of the assigned
company engineer, and the following legislation:
Health and Safety in Employment Act 1992;
Resource Management Act 1991.
 New Zealand Qualifications Authority 2016
9536 version 4
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2
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).
3
This unit standard applies to wellhead equipment above the master shut off valve on
the Christmas tree.
4
Definition
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
Establish the symptoms and causes of wellhead faults under supervision.
Range
three faults.
Performance criteria
1.1
Reported symptoms of faults are verified without delay in accordance with site
requirements.
1.2
Preliminary checks and tests are completed to establish the causes of faults.
Range
1.3
Consequences of faults are identified in relation to plant efficiency.
Range
1.4
breakdown, deviation, continuous, intermittent.
immediate, long term.
Information concerning the symptoms and cause of faults is effectively
communicated to relevant personnel in accordance with site requirements.
Range
oral, written, electronic.
 New Zealand Qualifications Authority 2016
9536 version 4
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Element 2
Prepare for the removal and dismantling of wellhead items and components under
supervision.
Range
removal and/or dismantling of three items and/or components.
Performance criteria
2.1
Authorisation procedures and instructions of the assigned company engineer
are located and referenced.
Range
instructions, drawings, specifications, authorisations, safety,
permits, isolation certification.
2.2
Health and safety requirements for the removal of items are identified and
assessed in accordance with site requirements.
2.3
Resources are selected prior to commencement of maintenance activity.
Range
2.4
tools, equipment, auxiliary services, materials, specialist services,
personnel.
Ancillary services to facilitate the removal of items and components are agreed
upon with the assigned company engineer and consequent requirements are
coordinated with relevant service people in accordance with site requirements.
Range
lifting equipment, access equipment, support services.
2.5
Checks carried out to ensure that tools, materials, and equipment fit the
specified purpose are described in accordance with site requirements.
2.6
Isolations to complete the activity are carried out and checked to ensure
compliance with site requirements.
Range
equipment, auxiliary services, process, safety.
Element 3
Contribute to the removal of items and components from a petrochemical wellhead under
supervision.
Range
at least three items and/or components.
Performance criteria
3.1
Disconnection of items and components minimises downtime and disruption to
production schedules, and complies with instructions of the assigned company
engineer.
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3.2
The removal of items minimises downtime and disruption to production
schedules.
3.3
Removed items and components are identified, cleaned, transferred, and stored
in a safe, secure manner in accordance with site requirements.
3.4
Site procedures for the housekeeping of the work area are followed.
3.5
Communication is maintained with appropriate personnel during removal
operations in accordance with site requirements.
Range
3.6
process personnel, maintenance personnel, services personnel,
maintenance supervision.
The release of substances to the environment during maintenance activity is
minimised in accordance with site and legislative requirements.
Element 4
Replace wellhead components and component parts under supervision.
Range
at least three components and/or component parts.
Performance criteria
4.1
Ancillary services are coordinated to facilitate the replacement in accordance
with site requirements.
Range
lifting equipment, access equipment, transport.
4.2
Tools and equipment are used safely in accordance with site requirements.
4.3
Workplace procedures are followed to confirm that replacement parts meet the
specification.
4.4
Action to be taken in the event of specified replacements not being available is
identified in accordance with site requirements.
4.5
Components and component parts are cleaned and protected in accordance
with manufacturer’s recommendations.
4.6
Components and component parts are fitted in accordance with manufacturer’s
recommendations.
4.7
Site procedures for the housekeeping of the work area are identified.
4.8
Communication is maintained with appropriate personnel during replacement
and adjustment operations in accordance with site requirements.
Range
process personnel, maintenance personnel, stores, manufacturer.
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Element 5
Assemble wellhead components and component parts under supervision.
Range
at least three components and/or component parts.
Performance criteria
5.1
The work requirements of the assigned company engineer are complied with
during assembly.
5.2
Parts used for assembly are accurately identified, cleaned, and verified as being
fit for purpose in accordance with site requirements and manufacturer’s
recommendations.
5.3
Tools selected for assembly are used safely in accordance with site
requirements.
5.4
Parts are assembled to manufacturer’s specification and site requirements
whilst minimising downtime and disruption to production schedules and meeting
maintenance planning requirements.
Element 6
Adjust and test wellhead component in restored equipment under supervision.
Performance criteria
6.1
Wellhead components are adjusted to meet specifications in accordance with
site requirements.
6.2
Methods of testing restored equipment are identified.
Range
6.3
observation, test equipment, hydro tests.
Test equipment requirements are identified.
Range
pressure, temperature, flow.
6.4
Tests related to the equipment are completed throughout assembly and
reinstatement in accordance with site requirements and manufacturer’s
recommendations.
6.5
Equipment restoration documentation and test records are completed 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.
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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