Ministerial Regulation No. 6 establishing safety zones and distance marks issued under the provisions of the Petroleum Act B.E. 2514

1. In establishing safety zones and marks in the vicinity of installations and devices which are used in onshore petroleum exploration and production operations, the concessionaire shall: *(1) fence around the drilling rigs and other structures used in the petroleum exploration and production when they are more than thirty metres in height above the ground level, by placing the fence at a distance of not less than one hundred and fifty metres from the outer edges of such rigs and structures, in order to indicate that it is a safety zone; *(2) maintain marks in alternate colours of red and white around the outer wall of the fence at every one hundred metre distance, and maintain a flag in orange colour at the highest point of the rigs and structures under (1); (3) turn on a fog-lamp placed at the highest point of the rigs and structures under (1) when the weather becomes dull or during the rain or during the night, with an intention that it will be seen from a distance of not less than two kilometres.

2. In establishing safety zones and marks in the vicinity of installations and devices which are used in offshore petroleum exploration and production operations, the concessionaire shall: (1 ) place not less than four buoys painted in alternate colours of orange and white on the sea surface around drilling platforms or other devices, whether their erection has been completed or not. The buoys shall be equidistant from one another and at a distance of not more than five hundred metres from the outer edges of such platforms and devices, in order to indicate that it is a safety zone; (2) maintain red marks and red lamps on the buoys and at the top of the rigs or the platforms or of the devices under (1); (3) turn on a fog-horn or a fog-lamp or transmit radio signals or turn on other danger alarms to such extent that adequate warning is given to aircrafts or ships passing through that region when the visibility is poor or during the night.

3. The concessionaire shall inform the Department of Mineral Resources, by a written prior notice of not less than forty-five days, of the plan to establish safety zones and of their locations; and he may proceed in accordance with paragraph 1 or 2 upon receiving permission to do so. Upon finishing each work in offshore petroleum exploration and production operations, the concessionaire shall remove all the relevant marks and buoys within fifteen days from the date of finishing such work.

4. The concessionaire shall maintain in a serviceable condition at all times the marks indicating safety zones and signalling instruments under paragraphs 1 and 2. Given on this 13th Day of September B.E. 2514 Signature Pote Sarasin Minister of National Development