Excavation Permit

This Permit is to be used for any excavation work in a substation or in the vicinity of an earthing grid or underground services. A copy of this Permit plus all Safe Work Method Statements (SWMS) and Drawings must be in the possession of the person controlling the works on site at all times. Where excavation is performed within a substation car park or in the vicinity to a substation earthing system, The Person Controlling the Works and the Transgrid representative must be persons authorised Substations - Work in HV Areas under the PSSR.

Location and purpose of excavation: (Attach a marked up copy of the General Arrangement drawing showing the proposed excavation area)
Substation:	Project Name/Number:
Description of Work:	Work area:

Identification of Services: The following drawings must be used to identify services within the work area
Drawing Number	Revision	Description
Substation Earthing Grid Layout
Underground electrical cables layout including communication services
HV cable route/layout diagrams
Water & Fire services layout
Spill oil & Storm water drainage layouts
Other Services (Eg. Security Fencing, security fencing conduit layouts, conduit and cable trench layout, Fibre Optic cable routes,.)

Risk Assessment and Safe Work Method Statements Have any of the following generic risks been identified within the Excavation area. If yes, safe work method statements covering those risks are required.
Risk	Yes / No	SWMS/JSEA Number & Revision	Safe Work Method Statement Name
Earthing Grid (Note 1)
Note 1: As a minimum the SWMS for bridging and earthing grids must meet the requirements of Safe Work Handbook - Bridge Earthing
Buried cables
Optic fibre
Fire/Water services
Overhead Conductors
High voltage equipment

Desktop identification of services and safety documentation confirmation Sections 1 to 3 are complete and all documentation has been supplied and checked. Once signed by Transgrid representative, site works to identify underground services within the work area can commence through non-destructive methods.
Person Controlling the Works:
Signature	Name	Date
Transgrid Representative:
Signature	Name	Date

On site service location and electrical safety requirements prior to excavation
All required/listed drawings and documentation are present and verified.
The full extent of the proposed excavation must be marked on site and on the attached drawings, including General Arrangement (GA) drawings.
All known buried cables, earthing grid and other services within 1m of the proposed excavation (the Excavation Area) must be highlighted on the drawings and marked on site prior to excavation.
Where the work involves the connection, cutting, disconnection or potential to break or damage any part of the earthing system, then prior to the work commencing a bridging lead is applied across the point of work by a person authorised Bridge Earthing Grids under the PSSR. Where no above ground earth exists to connect temporary bridging earth clamps, non-destructive excavation methods (hand/hydro vac excavation) must be used to expose the underground earthing grid to allow temporary bridging to be installed.
All known service routes within the Excavation Area must be exposed using non-destructive excavation methods (hand/hydro vac excavation).
All equipment for repairing a broken earthing grid and installing new temporary bridging earths are available on site.
Preparation Verified on site by the person Controlling the Works:
Signature	Name	Date	Time

Precautions and Warnings to be given to all persons working in the Excavation Area:
Other services, cables and earthing grid that are not shown on any drawings may exist. All reasonable care must be taken during excavation to avoid damage to these services. A spotter must be present to identify any unexpected services in the area of excavation.
Only non-destructive excavation is to be used within 200mm of known services (hand/hydro vac excavation).
Mobile plant used for excavation must be connected to the substation earthing system by a trailing earth lead.
Earthing grid must not be deliberately broken unless appropriate bridging providing an alternative current path, has been implemented by a person authorised Bridge Earthing Grids under the PSSR.
Bridging leads must only be installed or removed by a person authorised Bridge Earthing Grids.
If any part of an earthing system is inadvertently broken during work, all work in the vicinity must cease until an assessment is made of the earthing arrangements by a person authorised Bridge Earthing Grids. Do not approach, touch or attempt repairs. If the broken earthing grid is covered by a temporary bridging earth, the broken earth must be restored as soon as practicable. If the broken earthing grid is not covered by a temporary bridging earth, work cannot continue until additional safeguards have been implemented by a person authorised Bridge Earthing Grids. Once made safe the broken earth must be restored as soon as practicable.
Bridging leads must only be removed by a person authorised Bridge Earthing Grids once: The parallel connection has been restored; or Other bridging has been installed in parallel; or It is confirmed that is safe to do so.
Precautions and warnings verified on site by the person Controlling the Works:
Signature	Name	Date	Time

Permit Issue and approval to commence excavation
Subject to all items (sections 5 and 6) being completed, the excavation may proceed under the supervision of The Person Controlling The Works, who has been informed of, and acknowledges all of the conditions and site specific requirements of this excavation permit. Modification of the excavation area or excavation permit conditions requires re-issue of the excavation permit.
Person Controlling The Works:
(Accepting receipt of the Permit)	Signature	Name	Date
Transgrid Representative
(Approval to Issue Permit and commence excavation)	Signature	Name	Date
Permit Issue will expire on:	(Maximum of 4 weeks from Transgrid Representative Signature Date)

During the excavation work the following item has been found and is not shown on current Drawings

Drawing Ref No:	Service Description (Conduit, cable, pipe etc)	Date drawing submitted to Drafting Office for update

Excavation Permit Signature Sheet.
Persons who have received the Precautions & Warnings allocated to work in this Excavation Area
I understand the Precautions & Warnings given and my responsibilities under this Excavation Permit	Person Issuing Precautions and Warnings
Name	Worker Role	Signature	Time	Date	Name	Signature

Transfer of Excavation permit to a new Person Controlling the Works
Excavation may proceed under the supervision of a person (B) who has been informed of and acknowledges all of the conditions and site specific requirements of this excavation permit. Modification of the excavation area or excavation permit conditions requires re-issue of the excavation permit. In the event that the person controlling the works (A) is not available to sign off the permit. Verbal approval from the TransGrid Representative approving this Excavation permit can endorse transfer.
Transferred from:
Person Controlling the Works (A):
(Signing off the permit)	Signature	Name	Date
Transferred to:
Person Controlling the Works (B):
(Accepting receipt of the Permit)	Signature	Name	Date