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Installing ejector dewatering systems in the workplace

Level 2
Credit Value
Guided Learning Hours
The aim of this unit is to illustrate the skills, knowledge and understanding required to confirm competence in installing ejector dewatering systems in the workplace within the relevant sector of industry.

Learning Outcomes Assessment Criteria
The Learner Will The Learner Can
1 Interpret the given information relating to the work and resources when installing ejector dewatering systems.
  • 1.1 - Interpret and extract relevant information from drawings, specifications, schedules method statements, risk assessments and manufacturers' information.
  • 1.2 - Comply with information and/or instructions derived from risk assessments and method statements.
  • 1.3 - Describe the organisational procedures developed to report and rectify inappropriate information and unsuitable resources and how they are implemented.
  • 1.4 - Describe different types of information, their source and how they are interpreted in relation to:
    - drawings, specifications, schedules, method statements, risk assessments, manufacturers' information, current regulations and official guidance associated with dewatering.
2 Know how to comply with relevant legislation and official guidance when installing ejector dewatering systems.
  • 2.1 - Describe their responsibilities regarding potential accidents, health hazards and the environment whilst working:
    - in the workplace, below ground level, in confined spaces, at height, with tools and equipment, with materials and substances, with movement and storage of materials and by manual handling and mechanical lifting.
  • 2.2 - Describe the organisational security procedures for tools, equipment and personal belongings in relation to site, workplace, company and operative.
  • 2.3 - Explain what the accident reporting procedures are and who is responsible for making reports.
3 Maintain safe and healthy working practices when installing ejector dewatering systems.
  • 3.1 - Use health and safety control equipment safely and comply with the methods of work to carry out the activity in accordance with current legislation and organisational requirements when installing ejector dewatering systems.
  • 3.2 - Demonstrate compliance with given information and relevant legislation when installing ejector dewatering systems in relation to the following:
    - safe use of access equipment
    - safe use, storage and handling of materials, tools and equipment
    - specific risks to health.
  • 3.3 - Explain why and when health and safety control equipment, identified by the principles of prevention, should be used, relating to installing ejector dewatering systems, and the types, purpose and limitations of each type, the work situation and general work environment, in relation to:
    - collective protective measures
    - personal protective equipment (PPE)
    - local exhaust ventilation (LEV).
  • 3.4 - Describe how the relevant health and safety control equipment should be used in accordance with the given working instructions.
  • 3.5 - Describe how emergencies should be responded to in accordance with organisational authorisation and personal skills when involved with fires, spillages, injuries and other task-related activities.
4 Select the required quantity and quality of resources for the methods of work to install ejector dewatering systems.
  • 4.1 - Select resources associated with own work in relation to materials, components, fixings, tools and equipment.
  • 4.2 - Describe the characteristics, quality, uses, sustainability, limitations and defects associated with the resources in relation to:
    - ejectors
    - riser pipes, hoses and headworks
    - pipe network including pump, reservoir and discharge tanks
    - valves and gauges
    - control gear
    - pumps, testing and measuring equipment
    - hand tools, portable power tools and equipment.
  • 4.3 - Describe how the resources should be used correctly and how problems associated with the resources are reported.
  • 4.4 - Explain why the organisational procedures have been developed and how they are used for the selection of required resources.
  • 4.5 - Describe any potential hazards associated with the resources and methods of work.
  • 4.6 - Describe the methods of calculating quantity, length, area and wastage associated with the method and procedure to install ejector dewatering systems.
5 Minimise the risk of damage to the work and surrounding area when installing ejector dewatering systems.
  • 5.1 - Protect the work and its surrounding area from damage in accordance with safe working practices and organisational procedures.
  • 5.2 - Maintain a clean work space.
  • 5.3 - Dispose of waste in accordance with current legislation.
  • 5.4 - Describe how to protect work from damage and the purpose of protection in relation to general workplace activities, other occupations and adverse weather conditions.
  • 5.5 - Explain why the disposal of waste should be carried out safely in accordance with environmental responsibilities, organisational procedures, manufacturers' information, statutory regulations and official guidance.
6 Complete the work within the allocated time when installing ejector dewatering systems.
  • 6.1 - Demonstrate completion of the work within the allocated time.
  • 6.2 - Describe the purpose of the work programme and explain why deadlines should be kept in relation to:
    - types of progress charts, timetables and estimated times
    - organisational procedures for reporting circumstances which will affect the work programme.
7 Comply with the given contract information to install ejector dewatering systems to the required specification.
  • 7.1 - Demonstrate the following work skills when installing ejector dewatering systems:
    - measuring, assembling, connecting, installing, cleaning, clearing, maintaining, checking, testing, commissioning, monitoring, controlling and replacing.
  • 7.2 - Use and maintain hand tools, portable power tools and ancillary equipment.
  • 7.3 - Install ejectors as dewatering system to given working instructions relating to the following:
    - locate and install ejector pumps
    - install and connect low and high pressure pipe networks
    - test wells (pressure switch)
    - commission
    - monitor the system and collect data
    - control flow
    - decommission the system.
  • 7.4 - Describe how to apply safe and healthy work practices, follow procedures, report problems and establish the authority needed to rectify them, to:
    – identify installation quality requirements
    – conform to agreed specification
    – assemble ejector equipment to include twin risers, headworks, flexible pipe connectors, pipework, tanks and pump
    – identify the differences between low pressure and high pressure equipment
    – establish power source
    – establish water supply
    – install ejectors in wells, including connection to pump and tank
    – prime the system
    – commission the system
    – check operation of pressure safety switches
    – test wells for flow and return
    – monitor and control flow
    – monitor and maintain water levels, discharge volumes and ejector flow rates
    – collect data
    – clean, clear and maintain the system
    – dismantle the system, recover equipment, complete serviceability checks and remove from site for potential reuse
    – recognise and determine when additional specialist skills and knowledge are required and report accordingly
    – use hand tools, portable power tools and equipment
    – work at height
    – use access equipment.
  • 7.5 - Describe the needs of other occupations and how to effectively communicate within a team when installing ejector dewatering systems.
  • 7.6 - Describe how to maintain the tools and equipment used when installing ejector dewatering systems.
Assessment guidance and/or requirements
This unit must be assessed in a work environment, in accordance with the ConstructionSkills‘ Consolidated Assessment Strategy for Construction and the Built Environment. Please refer to the hyperlink for clarity -
Assessors for this unit must have verifiable, current industry experience and a sufficient depth of relevant occupational expertise and knowledge, and must use a combination of assessment methods as defined in the Consolidated Assessment Strategy.
Workplace evidence of skills cannot be simulated.

Qualifications offering this unit

Reference Title Sector Level