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Title / Describe and operate pump systems for dewatering in infrastructure works
Level / 3 / Credits / 6
Purpose / People credited with this unit standard are able to: describe pump systems for dewatering; prepare for dewatering using a pump system; operate a pump system; and carry out postoperational procedures of a pump system in infrastructure works.
Classification / Infrastructure Works > Generic Infrastructure Works
Available grade / Achieved
Explanatory notes
1Thefollowing legislation and requirements apply to this unit standard:
Health and Safety in Employment Act 1992;
Resource Management Act 1991;
Regional and local authority requirements;
Manufacturer’s instructions.
2Assessment against this unit standard must be based on evidence from a workplace context.
3Range
Outcomes 2, 3, and 4 require operation of one pump system, but exclude well-pointing. Well-pointing is covered in Unit 23286, Operate a well-point system for civil construction.
4Personal protective equipment, appropriate to job requirements, is to be selected and used in accordance with company procedures and manufacturer’s instructions.
5Definitions
Company requirementsinclude 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.
Outcomes and evidence requirements
Outcome 1
Describe pump systems for dewatering in infrastructure works.
Evidence requirements
1.1Pump systems are described in terms of their characteristics and capabilities.
Rangepumps – two of: reciprocating positive displacement, rotary positive displacement, rotary dynamic (centrifugal), linear or reciprocating dynamic;
characteristics and capabilities include but are not limited to – suction conditions, submersibility, head lifts, water pressure, flow velocity, discharge capacity, viscosity handling, solids handling, sand handling, motive power, noise.
1.2Pump systems and their associated hoses and fittings are described in terms of their suitability for specified dewatering tasks in infrastructure works.
Rangetasks may include but are not limited to – in trench single point, out of trench single point (hose in trench, remote well), well-pointing, spray dispersal.
1.3Measures to avert risk of damage to pumps and hoses or leads for dewatering in infrastructure works are described.
Rangerisks include but are not limited to – grit against impellers, dry-running, lifting pump by lead, damage from mobile machinery and other traffic.
1.4Hazards associated with use of pump systems for dewatering in infrastructure works are described in terms of their control.
Rangehazards include but are not limited to – carbon dioxide from fuel powered pumps, missing or damaged trash pump guards, manual handling.
1.5Environmental protection considerations when using a pump system are described.
Outcome 2
Prepare for dewatering using a pump system in infrastructure works.
Evidence requirements
2.1Site is checked for hazards, and any hazards requiring control are reported or are controlled in accordance with company requirements.
2.2A suitable pump system is selected based on the evaluation of factors in accordance with company requirements.
Rangefactors may include but are not limited to – suction conditions, submersibility, head lifts, discharge capacity, viscosity handling, solids handling, sand handling, motive power, noise.
2.3Disposal of water is determined in accordance with local authority requirements and discharge availability.
2.4Pump system is checked for damage in accordance with manufacturer’s instructions, and any damageis reported in accordance with company requirements.
Rangepump, hoses and any leads, any fittings, power source.
2.5Pump system is laid out ready for assembly and operation in accordance with manufacturer’s instructions and/or company requirements, and local authority requirements.
Outcome 3
Operate a pump system.
Evidence requirements
3.1Pump system is assembled and operated in accordance with manufacturer’s instructions and/or company requirements, and local authority requirements for water disposal.
3.2Operation of the pump system is monitored, and any required adjustments are made, in accordance with manufacturer’s instructions and/or company requirements, and dewatering and local authority requirements.
Outcome 4
Carry out post-operational procedures of a pump system.
Evidence requirements
4.1Pump system is shut down according to manufacturer’s instructions.
4.2Pump system is removed from operation in accordance with manufacturer’s instructions and/or company requirements.
4.2Pump system is cleaned and stored in accordance with company requirements and, where applicable, manufacturer’s instructions.
Planned review date / 31 December 2016Status information and last date for assessment for superseded versions
Process / Version / Date / Last Date for AssessmentRegistration / 1 / 26 January 2007 / 31 December 2012
Review / 2 / 21 November 2008 / 31 December 2012
Review / 3 / 21 July 2011 / N/A
Consent and Moderation Requirements (CMR) reference / 0101
This CMR can be accessed at
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and which are assessing against unit standards must engage with the moderation system that applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies to this standard are outlined in the Consent and Moderation Requirements (CMRs). The CMR 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 you wish to suggest changes to the content of this unit standard.
Infrastructure ITOSSB Code 101813 / New Zealand Qualifications Authority 2018