Russia's state-run nuclear power firm Rusatom is leaving its offer to help Tokyo Electric Power Co. deal with the Fukushima No. 1 reactor meltdowns open despite the rejections it's been getting so far, the head of a Rusatom unit said.

Rusatom could use its experience with the 1986 Chernobyl disaster to help Tepco resolve the radioactive water crisis at the crippled plant, Rosatom Overseas General Director Djomart Aliyev said in an interview Tuesday.

Noting Tepco has been negative about tying up, Aliyev urged the utility to accept its offer of technological help.

"As Tepco has not made all the information open, we cannot find solutions immediately," Aliyev said. "If we cooperate, however, we may produce good results."

Rusatom has formed a special team to analyze the situation at Fukushima No. 1, which suffered three core meltdowns in March 2011, and has proposed lists of equipment, including radiation-resistant cameras and agents for clumping radioactive materials.

Tepco has turned down all of its proposals, he said.

Asked about doubts concerning the safety of the Bushehr nuclear plant that Rusatom helped Iran construct, Aliyev said the company has extensively tested the facility and sees no problems. But Iran's reported plan to use domestically developed nuclear fuel at the plant would be effectively impossible, he added.