Islamabad: In wake of the recent Japan earthquake, Tsunami and nuke crisis, Pakistan's top nuclear regulatory body has advised authorities to review safety aspects of nuke power plants in Karachi and Chashma.

The Pakistan Nuclear Regulatory Authority (PNRA) has asked the Pakistan Atomic Energy Commission to review safety aspects of nuclear power plants, including site studies, safety systems, operators' training, emergency power systems and off-site emergency preparedness plans.

The PNRA will study the accidents at Fukushima nuclear plants and the response of Japanese and other regulatory authorities.

The PNRA also said that it might ask PAEC to take "additional measures". The PNRA is continuously carrying out environmental monitoring across Pakistan to assess any change in the natural radioactivity level.

So far, no change in the level has been observed. The PNRA is also hosting an international seminar on "nuclear safety and security challenges for the 21st century" in Islamabad during April 21-23. The event will be attended by professionals working in the nuclear industry in different disciplines, including regulators, operators, designers and manufacturers.

Pakistan's nuclear facilities were reviewed by the IAEA at the fourth review meeting in 2008. Pakistan signed the Convention on September 20, 1994 and ratified it on September 30, 1997.

In its report to the IAEA, the Pakistan government informed the 2008 review meeting that it was taking appropriate measures to install and operate nuclear plants for generation of electricity and highest priority was accorded to safety.

A fifth review meeting of the parties to the Convention on Nuclear Safety is being held in Vienna during April 4-14.