Install and maintain hydraulic systems on wind turbines
This national occupational standard defines the competence required to install, test and maintain hydraulic systems on wind turbines. It also requires competence in reading and interpreting technical drawings. The standard is for those responsible for installing and maintaining hydraulic systems on wind turbines whether they are situated onshore or offshore and requires knowledge and competence of the use of a variety of mechanical methods.
You must be able to:
Identify the hydraulic system to be isolated by interpreting system
plans and using available information.
Select and wear the PPE required to carry out the isolation activity.
Apply isolations and prove for dead in accordance with local isolation
Carry out a site-specific risk assessment of the work area, identifying
the hazards and implementing the control measures required.
Maintain accurate and up to date records.
Report information and data to the designated person.
Maintain Hydraulic Systems on Wind Turbines
Use and interpret technical drawings.
Check all aspects of the operation of a hydraulic system and identify
Undertake checks and routine activities as part of a planned
Install a system to comply with manufacturer and company
Commission the hydraulic system and confirm safe and correct
Carry out the operation, troubleshooting and commissioning of PLC
and Safety Constrollers
Carry out inspection, testing and fault finding on fluid power
Strip a system to component level and repair or replace as required.
Confirm that the completed task meets expected Company
Clean and store equipment safely and securely and leave the work
area in a safe condition in accordance with Company procedures.
Carry out all work in accordance with industry standards and
Safely dismantle, assemble and tension:
a) bolted connections.
b) hydraulically torque bolted connections.
Inspect and check components and fittings.
Check and confirm that work complies to related specifications,
methods, process, techniques and company and manufacturers
Carry out drive alignment using hand tools.
Knowledge and Understanding
You need to know and understand:
The principles of health, safety and environmental legislation and
regulations when maintaining hydraulic systems, including COSHH
The organisation's safety rules, policies and procedures when
carrying out work on hydraulic systems.
The hazards associated with hydraulic systems, including portable
systems, and the means by which they are minimised.
How to select, inspect and use PPE when carrying hydraulic system
How to carry out a site specific risk assessment and identify
Assessment of the role and criticality of the hydraulic system in
relation to site and process.
How to identify different hydraulic motors and controllers.
The symbols that represent fluid power devices in circuit diagrams.
The identification of different types of valves, pipe work, sensors and
The identification of schematic symbols for hydraulic systems.
How Can-bus, Ethernet and Profinet networked systems work and
interface with the hydraulic pressure pump.
How to respond in the event of an emergency situation in the
How to leave the work area in a safe and secure condition,
The company recording and reporting process.
Maintain Hydraulic Systems on Wind Turbines
the principles of Hydraulic systems, including the construction and
operation of fluid power devices.
the function of all hydraulic system components, including:
e) use of remote diagnostic tools to aid fault finding including HMI
screens and SCADA systems
the function of different types of pumps and how to check start/stop
pressure of a pump.
De-pressurisation of a hydraulic system.
How to select and change system fluid, flushing when necessary.
How to select and change system filters.
Removal and replacement of static and dynamic seals.
The sequence to be adopted for the dismantling and reassembling
of the equipment to both sub assembly and component level.
Methods of checking that components are fit for purpose.
How to change hydraulic hoses, fittings and pipe work.
How to adjust components and assemblies and flows and pressures
to ensure they function correctly.
The correct means of disposal of contaminated waste from work on
The sections of current British Standards relevant to your work.
How to use measurement techniques including:
a) Vernier gauges
The principles and regulations relating to torque and angular
Hand torque bolted connection techniques.
The cause and effect of good and bad drive alignment.
The principles of laser alignment,the laser equipment used for
alignment and how to correctly use it.
The types of materials available and how to select material
appropriate for the task.
How to recognise stress relaxation, fatigue and the effects of
The principles of lubrication and types of lubrication and
Links To Other NOS
EUSWT03, EUSWT04, EUSWT05, EUSWT06, EUSWT07, EUSWT08,