23286 Operate a Well-Point System for Civil Construction

23286 version 2 Page 1 of 4 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.

Ó New Zealand Qualifications Authority 2018 23286 version 2 Page 2 of 4

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 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.

1.2 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.

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.

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.

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.

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 [email protected] if you wish to suggest changes to the content of this unit standard.

Ó New Zealand Qualifications Authority 2018