23286 version 2
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Operate a well-point system for civil construction
Level
3
Credits
6
Purpose
People credited with this unit standard are able to: determine well-pointing
requirements and prepare for well-pointing for civil construction; carry out the
well-pointing operation; and carry out post-operational procedures.
Subfield
Civil Works and Services
Domain
Civil Construction Works
Status
Registered
Status date
21 November 2008
Date version published
21 November 2008
Planned review date
31 December 2013
Entry information
Recommended: Unit 23289, Operate pump systems for
dewatering in civil construction, or demonstrate
equivalent knowledge and skills.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
Infrastructure ITO
Accreditation and Moderation Action Plan (AMAP) reference
0101
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
The following legislation and requirements apply to this unit standard:
Health and Safety in Employment Act 1992;
Resource Management Act 1991;
Approved Code of Practice for Safety in Excavation and Shafts for Foundations
(Wellington: Department of Labour, 1995) (the Excavation Code), Section 4.4.1
Surface Water and Drainage. The Excavation Code is available from
http://www.osh.govt.nz/order/catalogue;
Territorial authority requirements;
Manufacturer’s instructions.
 New Zealand Qualifications Authority 2016
23286 version 2
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2
Assessment against this unit standard must be based on evidence from a workplace
context.
3
Personal protective equipment, appropriate to job requirements, is to be selected and
used in accordance with company procedures and manufacturer’s instructions.
4
Definitions
Company requirements include the policy, procedures, and methodologies of the
company. They include legislative and regulatory requirements, which may apply
across the company or to a specific site. Requirements are documented in the
company’s health and safety plans, traffic management plans, contract work
programmes, quality assurance programmes, policies, and procedural documents.
Manufacturer’s instructions may include specifications; installation, handling, use, and
maintenance instructions; and safety data sheets.
Elements and performance criteria
Element 1
Determine well-pointing requirements and prepare for well-pointing for civil construction.
Performance criteria
1.1
Determination on whether to proceed with well-pointing is based on evaluation
of variable factors.
Range
1.2
variable factors may include but are not limited to – test bore, soil
type, ground condition, effect of dewatering on excavation stability,
nature and timeline of the works, urgency, availability of
equipment, territorial authority requirements.
Method of well insertion is determined based on soil type and ground condition.
Range
one or a combination of – water jet, air jet, augering.
1.3
Well spacing and locations are determined based on requirements of the task
and equipment being used.
1.4
Selection of pump is based on evaluation of factors involved.
Range
factors may include but are not limited to – capacity, noise control,
possible effect on neighbouring bores.
1.5
Disposal of water is determined in accordance with territorial authority
requirements and outlet availability.
1.6
Equipment is checked for faults in accordance with manufacturer’s instructions,
and any faults are reported in accordance with company requirements.
Range
pump, hoses and any leads, spears, power source;
faults may include excessive wear.
 New Zealand Qualifications Authority 2016
23286 version 2
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1.7
Site is checked for hazards, and any hazards requiring control are reported or
are controlled in accordance with company requirements.
1.8
Spears and other equipment are laid out ready for insertion, assembly, and
activation in accordance with manufacturer’s instructions and/or company
requirements, and territorial authority requirements.
Element 2
Carry out the well-pointing operation.
Performance criteria
2.1
Spears are inserted according to method determined in accordance with
manufacturer’s instructions and/or company requirements.
2.2
The well-point system is assembled and activated in accordance with
manufacturer’s instructions and/or company requirements, and with territorial
authority requirements for water disposal.
2.3
Operation of the well-point system is monitored, and any required adjustments
are made, in accordance with manufacturer’s instructions and/or company
requirements, and dewatering and territorial authority requirements.
Element 3
Carry out post-operational procedures.
Performance criteria
3.1
The well-point system is deactivated and disassembled in accordance with
manufacturer’s instructions and/or company requirements.
3.2
Spears are removed from the ground in accordance with manufacturer’s
instructions and/or company requirements.
3.3
Equipment is cleaned and stored after use in accordance with company
requirements and, where applicable, manufacturer’s instructions.
3.4
Well holes are closed in accordance with company requirements.
 New Zealand Qualifications Authority 2016
23286 version 2
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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 Infrastructure ITO askus@infratrain.co.nz if you wish to suggest changes to
the content of this unit standard.
 New Zealand Qualifications Authority 2016