ESP 3 - AT Work Packages Flashcards
Before starting a task, what is the minimum documentation carried by the AT?
- Approved Written Procedure
- Method Statement
- Risk Assessment
What will the AWP facilitate prior to work being carried out?
Safety from the System
Can more than one AWP be active/open while on the WTG?
Yes, provided that the AE has approved the use of both AWP’s being used in conjunction with one-another.
What are the seven sections within an AWP?
- Work Details.
- Transfer of Control (Release).
- Establish Safety Precautions.
- Return to Service.
- Transfer of Control (Return).
- Surrender Record.
- History of Document.
What are the three different types of AWP that can be used?
- AWP with ROMP. - Work and POI are all found on the GE side of the agreed boundary.
- AWP with Cross Boundary under Boundary Safety Rules (BSR) (With optional ROMP). - Used for work completed on BSR (Customer/Client) side of the agreed boundary but also require isolations on the GE side. AWP written by GE but agreed with the Client.
- AWP with Cross Boundary under ESP (With optional ROMP). - Used for work on the ESP side of the agreed boundary (GE side), but will require isolations from the client side. AWP written by GE but agreed with the Client.
Each point of isolation within the AWP can be given as many as ‘5 Safety Steps’ if necessary, what are these safety steps?
- Prepare for Shutdown
- Shutdown
- Isolate Energy Sources
- Control Stored Energy
- Verify Stored Energy
Before any work or testing can take place under an Approved Written Procedure, the Authorised Technician shall enact…
The transfer of control procedure with the appropriate Operational Controller to release Operational Control of the specified Wind Turbine Generator Mechanical/Electrical Equipment.
Explain the steps when enacting the Transfer of Control procedure.
- Contact OC and report presence of working party on site.
- Give names of working party and AT leading the team, location, WTG ID, Work/task and expected duration.
- Inform the OC of the AWP being used and its version number, the OC will cross-check this and ensure it is in the list of approved AWP’s.
- OC will check for restrictions/limitations and inform the AT of them.
- Both the AT and OC will then exchange a time that the transfer of control was carried out.
- The AT will sign his/her name to confirm responsibility of the WTG from this point until the return is given back to the OC at the end of the working shift.
What is meant by establishing local control?
Ensuring all remote functions are disabled i.e. the remote activation of LV/HV breakers.
What is General Safety defined as?
The provision of safe access to and from the place of work, a safe place of work, safe methods of work and the use of correct work equipment and personal protective equipment.
What are the inherent dangers on a WTG?
- Electrical
- Mechanical
- Hydraulic
- Chemical
- Stored Energy
Give an example of Electrical dangers on the WTG.
Any system that has LV or HV voltage, either AC or DC current also including batteries and capacitors. Electrical panels and their internal components within the turbine can present electrical dangers.
Give an example of Mechanical dangers on the WTG.
Mechanical dangers on a WTG can be present through rotational parts and can result in crushing injuries. Rotor locks, yaw locks or blade locks are an example of this type of danger.
Give an example of Hydraulic dangers on the WTG.
Hydraulic products can irritate skin and can present dangers of injection. Systems requiring the use of pumps often present Hydraulic risks, for example, pitch lock/blade lock pumps on the WTG.
Give an example of Chemical dangers on the WTG.
Chemicals can present many risks whether they are irritant, corrosive, carcinogenic the correct PPE should always be used dependent on the chemical. In the WTG this hazard could be through the use of cleaning agents, system coolant and Hydraulic oil as well as many other things.
