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 16 of 67
Page 16 of 67 
 
(i) graduated in pounds per square inch or the metric equivalent, and 
  
(ii) checked for accuracy at intervals not more than 12 months;   
(ee) calibration of pressure relief valves, process safety valves, pressure gauges and 
other process safety equipment shall be certified by accredited persons;  
(ff) new, repaired, or modified pipework shall be tested in accordance with the 
American Society of Mechanical Engineers (ASME) working standards or 
recognised equivalent standards to 1.25 times the maximum allowable working 
pressure before being put into service; 
  
(gg) pressure vessel, equipment and associated piping used in midstream and 
downstream petroleum operations shall meet internationally recognised 
standards for monitoring and controlling corrosion, with respect to the design, 
construction, routine inspection, testing and maintenance;  
(hh) the following measures shall, in addition to the respective manufacturer’s 
recommended procedures, be taken in relation to every pressure vessel, 
equipment and associated piping used in midstream and downstream petroleum 
operations, that is — 
  
(i) non-destructive testing, including UTM, shall be carried out at intervals 
not less than once in three years to check the rate of both internal and 
external corrosion and erosion, 
  
(ii) when corrosion coupons are used for monitoring the corrosion rate in a 
pressure vessel, equipment or piping, the results obtained at any given 
time shall be recorded and made available to the Authority on demand,  
(iii) when cathodic protection system is chosen for the control of vessel 
internal corrosion, an appropriate design of the system shall be made 
to meet internationally recognised standards; 
  
(ii) result of the inspection, test and survey carried out under these Regulations shall 
be made available to the Authority on demand;  
(jj)permanently placed bulk storage tank containing petroleum liquids shall — 
(i) be installed within a bund wall capable of containing the contents of the 
largest tank plus ten percent of the volume of the remaining tanks within 
the enclosure,