A board of the Nuclear Regulatory Commission has agreed to conduct a hearing in Boston after a request by opponents of the Pilgrim Nuclear Power Station in Plymouth. A three-member Atomic Safety and Licensing Board will hear arguments June 7 regarding two orders given by the NRC after last year’s nuclear plant accident in Japan. The NRC orders aimed to apply lessons from the accident to improve safety. But the group Pilgrim Watch said the orders failed to require fixes needed to prevent the same problems that caused three Japanese reactors to blow up. The safety board said Pilgrim Watch’s request raised issues that need further exploration at a hearing.