Petroleum Amendment Regulations (No. 3) 2000 (WA)

7212 GOVERNMENT GAZETTE, WA [15 December 2000

1.	Citation These regulations may be cited as the Petroleum Amendment
Regulations (No. 3) 2000.

MN301-

Petroleum Act 1967

Petroleum Amendment Regulations (No. 3) 2000

Made by the Governor in Executive Council.

15 December 20001 GOVERNMENT GAZETTE, WA 7213

2.             Commencement

These regulations come into operation on the day on which section 7 of the Acts Amendment (Australian Datum) Act 2000 comes into operation.

3.            The regulations amended

The amendments in these regulations are to the Petroleum
Regulations 1987*.

[* Published in Gazette 23 October 1987, pp. 3971-2.

For amendments to 17 November 2000 see 1999 Index to
Legislation of Western Australia, Table 4, p. 206, and Gazette
8 February and 27 June 2000.]

4.             Regulation 1A inserted

After regulation 1 the following regulation is inserted -

1A.	Definitions
In these regulations -
"the AGD" means the Australian Geodetic Datum

referred to in regulation 11;

"the GDA" means the Geocentric Datum of Australia

referred to in regulation 9.

,,

5.            Regulations 9, 10 and 11 inserted

After regulation 8 the following regulations are inserted

9.            Application of Geocentric Datum of Australia

(1)	Subject to regulation 11, the GDA is the prescribed Australian datum for the purposes referred to in section 8(1) of the Act.
(2)	The reference ellipsoid for the GDA is the Geodetic Reference System 1980 ("GRS80") ellipsoid with a semi-major axis of 6 378 137 m exactly and an inverse flattening (I/f) of 298.257 222 101.
(3)	The reference frame for the GDA is realised by the coordinates of the following Australian Fiducial Network geodetic stations referred to the GRS80 ellipsoid determined within the International Earth

7214 GOVERNMENT GAZETTE, WA [15 December 2000

Rotation Service Terrestrial Reference Frame 1992

(ITRF92) at the epoch of 1994.0 -

No. Name South Latitude East Longitude Ellipsoidal
Height

AU 012	Alice	230	40' 12.44592" 1330 531 07.84757" 603.358 m
Springs

AU 013 Kanatha 200 1170 05'49.87255" 109.246 m

58' 53.17004"

AU 014 Darwin 120 1310 07' 57.84838" 125.197 m

50'37.35839"

AU 015 Townsville 190 20'50.42839" 1460 46' 30.79057" 587.077 m

AU 016	Hobart	420 481 16.98506"	1470 26119.43548"	41.126 m
AU 017	Tidbinbilla	350 23' 57 15627"	1480 58' 47.98425"	665.440 m

AU 019 Ceduna 310 521 00.0166411 1330 144.802 m

48'35.37527"

AU 029 Yaragadee 290 02'47.61687" 1150 20'49.10049" 241.291 m

10.         Application of GDA to certain instruments

(1) A reference (a "GDA reference") in an instrument

under the Act or these regulations that comes into force
on or after the commencement day to the position on
the surface of the Earth of a graticular section or block
(including a block constituted as provided by

section 135 of the Act) is to be made by reference to -

(a) the GDA; and

(b) coordinates of latitude and longitude calculated to 3 decimal places of a second.

(2) An instrument under the Act or these regulations

referred to in subregulation (1) that contains a GDA
reference is to be endorsed with a statement to the
effect that the GDA applied to the calculation of the
coordinates of latitude and longitude relevant to the

GDA reference, but the omission of such a statement

does not affect the validity of the instrument.

(3) Despite section 27 of the Act, for the purposes of

subregulation (1) -

(a)	the meridians of longitude defining the eastern and western boundaries of a graticular section; and
(b)	the parallels of latitude defining the northern and southern boundaries of a graticular section,

may be taken to be at a distance from each other that is

other than 5 minutes.

(4) In subregulation (1) -

"commencement day" means the day on which

section 7 of the Acts Amendment (Australian
Datum) Act 2000 comes into operation.

15 December 2000] GOVERNMENT GAZETTE, WA 7215

11.          Application of Australian Geodetic Datum

(1) Subject to regulation 10, the AGD is the prescribed
datum for the purposes referred to in section 27(4) of
the Act.

(2) The AGD is defined by an ellipsoid having a

semi-major axis (equatorial radius) of 6 378 160 m and
a flattening of 1/298.25 and fixed by the position of the
origin being the Johnston Geodetic Station in the

Northern Territory of Australia.

(3) The Johnston Geodetic Station is taken to be situated

at —

(a)	25° 56' 54.5515" south latitude and 133° 12' 30.0771" east longitude; or
(b)	where decimal reckoning is used, 25° 56.90919' south latitude and 133° 12.50129' east longitude,

and to have a ground level elevation of 571.2 m above

the ellipsoid referred to in subregulation (2).

(4) An instrument in force under the Act or these

regulations immediately before the commencement day
that contains a reference to the position on the surface
of the Earth of a point, line or area determined by
reference to the AGD is to be endorsed, if it is
practicable to do so, with a statement to the effect that
the AGD applied to that determination, but the
omission of such a statement does not affect the

validity of the instrument.

(5) If, in relation to an instrument referred to in

subregulation (4), coordinates calculated by reference

to the AGD are to be converted to coordinates

calculated by reference to the GDA, the conversion is

to be made using the National Transformation

Version 2 (NTV2) grid file transformation. ,1

By Command of the Governor,

M. C. WAUCHOPE, Clerk of the Executive Council.