Library / Page 1 of 67 MIDSTREAM AND DOWNSTREAM PETROLEUM SAFETY AND ENVIRONMENTAL REGULATIONS, 2025
Page 1 of 67 MIDSTREAM AND DOWNSTREAM PETROLEUM SAFETY AND ENVIRONMENTAL REGULATIONS, 2025

Page 26 of 67
Page 26 of 67 
 
(f) compliance with national and international guidelines prescribed by the Authority 
for handling, shipping, transportation, storage and use of radioactive sources;  
(g) radioactive sources of minimum strength for the required task are used;  
(h) special shielded containers are used to store and transport radioactive sources;  
(i) the transport index of each radioactive source is conspicuously displayed or 
tagged on the container;  
(j) personal dosimeters are issued to and worn by radiation personnel and be 
evaluated on monthly basis;  
(k)  recommended dose levels by national and international agencies on radiation 
protection are complied with but in general, the annual dose level in the case of 
—  
(i) average exposure of radiological personnel over a five-year period shall 
not exceed 20mSv per annum, and annual exposure shall not exceed 
50mSv. (25uSv per hour for 2000-hour exposure per year), and  
(ii) non-radiological personnel (the public) shall not exceed 100mr (1mSv) 
per year; 
(l) where a tool containing a radioactive source is missing it shall be promptly 
reported to the Authority with details. 
 
28. A manager shall ensure — 
(a) safety signs are prominently displayed to provide awareness, caution and 
direction, such as areas of “No Smoking”, ''high noise'', ''exit'', and ''muster point''; 
(b) relevant information of emergency contact and numbers are displayed; and  
(c) appropriate hazard communication channels are developed, such as use of 
posters, bulletins, slogans and jingles.  
 
signages 
29. A manager shall ensure that the use of internal combustion engines in an area classified as highly 
flammable is prohibited unless adequate precautionary measures have been taken to prevent fire or 
explosion. 
 
Restriction of use of 
internal combustion 
engine 
30. A manager shall ensure that a management system manual is made available for every offshore 
operation which specifies the — 
Offshore operations