CALGARY, ALBERTA, FEB. 10 -- Roh Jae Won, South Korea's ambassador to Canada, said today he expects the North Koreans to try to disrupt the Summer Olympics in Seoul by "war or a warlike act" or "state-sponsored terrorism."

Reiterating his country's concerns about violence from the communist North Koreans before or during the Sept. 17-Oct. 2 Olympics, Roh said the terrorist bombing of a Korean Air Lines jet last year "kind of woke us up" about the dangers of violence in Seoul.

There have been indications that the South Korean government believes there is a greater chance of violence before the Olympics than during the Games, principally because several of North Korea's communist allies, including the Soviet Union and China, will be among the 161 countries participating in the Olympics.

"They will do things to try to disrupt the flow of visitors," Roh said, referring to possible problems before the Games begin.

The United States has said it will continue its naval exercises off the coast of South Korea and Roh said that is because the United States is "aware that the North Koreans are going to try to do everything in their power to try to disrupt this great event."

His tone contrasted sharply to the cheerful nature of Park Seh-Jik, president of the Seoul Olympic Organizing Committee, who appeared with him at the afternoon news conference at the Main Press Centre for the Winter Olympics.

"We can guarantee security for whoever comes to Seoul for the Olympics," Park said after Roh's statements.

In other developments three days before the opening ceremonies here, Prince Alexandre de Merode, chairman of the IOC medical commission, had harsh words for the U.S. Olympic Committee and U.S. Ski Association, which have allowed a coach and team official involved in a blood doping scandal to remain with their organizations.

Kerry Lynch, the silver medalist in the Nordic combined event at last year's world championships, admitted about a month ago that he participated in blood doping at the event. Doug Peterson, Lynch's coach, and James Page, a U.S. Ski Association official, also admitted helping Lynch in the blood doping, which is not allowed by the IOC.

Lynch was stripped of his medal and suspended through the 1988 season, but Peterson still is a coach (although he lost a previous promotion and also is not the Olympic coach) and Page is in Calgary as the assistant director of international games preparation for the USOC. However, Page lost his job as a technical adviser to the Nordic combined team and is expected to leave town Friday, before the Olympics begin.

"It's quite abnormal," De Merode said of Peterson's and Page's positions in the U.S. organizations. "Officials involved in blood doping should no longer be allowed to work for the Olympic committee or federation. It's something that's quite unacceptable."

USOC President Robert Helmick said today that, in Page's case, he believes the "sanctions we took were appropriate."

"In view of Jim Page's prior record of being absolutely against this entire procedure {blood doping}, we investigated, found peripheral involvement and took the appropriate action . . . Of course, we absolutely condemn the practice."

De Merode also said he does not see a need for all Olympic athletes to be tested for drugs. "That's contrary to the Olympic ideal," he said.

During these Olympics, only the gold medalist, the fourth-place finisher and another competitor selected at random will undergo urinalysis after each event.

The IOC will not get involved in two eligibility disputes, one involving a Soviet speed skater and the other four French hockey players.

De Merode said the IOC is not interfering in the case of speed skater Sergei Guliaev, who is suspected of acting as a middleman in a steroid scheme involving a former Soviet team doctor and a Norwegian athlete, Stein Krosby. Guliaev has said he was not aware the packages he gave Krosby contained steroids.

"We have no formal proof," De Merode said. "We are not moving until further notice."

IOC spokeswoman Michele Verdier said the matter will be addressed by the International Skating Union.

She also said the IOC was unaware of problems involving Canadian-born hockey players Patrick Daley, Francois Quimet, Stephane Lessard and Steve Woodburn. Daley has been barred by the French Ice Hockey Federation because he played international junior hockey for Canada 11 years ago. Players are allowed to represent only one country in international competition.

The French federation also says the other three have not been French citizens for the three years required by the International Ice Hockey Federation.