159—Person carrying out site radiography using sealed radioactive source to mark out area around exposure site
A person who intends to carry out site radiography that involves the use of a sealed radioactive source must, before commencing to do so, mark out the area around the exposure site with—
(a) barriers that—
(i) are marked with bunting of a vivid colour; and
(ii) are placed so that the equivalent dose rate outside the barrier does not exceed 25 microsievert per hour; and
(b) signs—
(i) that consist of 2 panels—
(A) the top panel of which—
• complies with the requirements of AS 1319–1994 Safety Signs for the Occupational Environment applying to danger signs; and
• bears the word "DANGER"; and
• bears the words "KEEP OUT: RADIOGRAPHY IN PROGRESS" or other words to that effect; and
(B) the bottom panel of which—
• complies with the requirements of AS 1319–1994 Safety Signs for the Occupational Environment applying to warning signs; and
• bears the words "WARNING" and "RADIATION"; and
• bears the radiation symbol; and
(ii) are clearly legible from a distance of 5 metres.