Kris Ostrowski, news director of Channel 7 for the past 13 months, has resigned . . . and has been replaced by Tom Doerr, who gets the new title of executive news director . . .

Since 1983, Doerr has been news director at KTUL in Tulsa, like WJLA part of the Albritton Communications Co. broadcast group . . .

In Tulsa, he brought the station from third to first in the news ratings, attracting the attention of Channel 7 President Tom Cookerly, who is also president of the broadcast division for Albritton . . .

Word in the industry is that Doerr, who had previously been executive producer of news at WSB in Atlanta, had recently received some attractive offers from around the country and that Cookerly, to keep him with Albritton, chose to bring him to Washington . . .

Ostrowski was told of the move on Monday, according to sources, and informed she could remain as news director. After mulling the offer for a day she chose to resign. She reportedly will receive full payment on her two-year contract . . .

Doerr informed his Tulsa staff of the move yesterday morning and immediately flew to Washington to take over operation of the evening news . . .

For her part, Ostrowski told a producers' meeting at 9:30 yesterday morning that she was leaving due to "irreconcilable differences with Tom Cookerly" . . .

Late yesterday she told a reporter that "I think Tom and I had different management styles and he may have been a little uncomfortable with my aggressiveness. He wants a sort of comfort level in his dealings with people. I think I have done a good job" . . .

Ostrowski joked that "I'll bet if you ask the competition they'll tell you they're glad I'm gone," and David Nuell, station manager of WRC, yesterday confirmed that "she's been terrific competition. She's been the best of them at Seven in getting things implemented on the air" . . .

Cookerly, in a memo distributed to the staff, said "although we asked Kris Ostrowski to stay as news director, she has elected to resign. I think you all will agree that great progress has been made in our news product since Kris took over. Her energy and knowledge have given us a sense of momentum and accomplishment upon which we now must build. Please join me in wishing Kris the very best and in welcoming Tom" . . .

Ostrowski had been news director at WKYC, the NBC-owned station in Cleveland, when she took the job with WJLA . . .

Ostrowski said yesterday that she's "already received some interesting nibbles" since word hit the street that she had left the station. She plans to take some time off before making another job decision . . .

Cookerly said yesterday that "my feeling is that we're edging WRC now in several key areas but that the big battle is still ahead. I think bringing in Tom will strengthen us down the line" . . .

(It should be noted that both WRC and WJLA are quite aware that the Gannett Co. is going to take over WDVM early next year, a move that they both expect will increase competition in an already tight news market) . . .

Ostrowski leaves at a time when WJLA is showing signs of overtaking WRC in the battle for second place in the evening news . . . October ratings show WJLA beating WRC in the early evening and again at 11 p.m., but the baseball playoffs have been a factor in audience fall-off for the NBC-owned station . . . Also in the News

CBS Entertainment yesterday announced that two new situation comedies will move into the 8-to-9 p.m. Wednesday time slot being vacated by "Stir Crazy" starting Dec. 11 . . .

"Stir Crazy" will be disappeared after next week's (Oct. 23) telecast, ostensibly to return after the first of the year. Except for a couple of Halloween cartoons Oct. 30, CBS hasn't revealed interim programming plans for that time slot . . .

"Mary," which will air at 8 p.m., will put Mary Tyler Moore back in the news business, this time as "Helpline" columnist for "one of Chicago's smaller daily newspapers" . . .

Having abandoned "a high fashion glamor magazine" for the newspaper, divorce' Mary Brenner will battle managing editor Frank DeMarco (James Farentino), even though she's attracted to him . . .

"Mary" will also provide employment for John Astin as the theater critic, David Byrd as the "nearsighted copy editor" and James Tolkan as the fiance' of Mary's neighbor . . .

The 8:30 entry, "Foley Square," stars Margaret Colin as assistant DA Alex Harrigan, "a product of the Middle West who has learned to survive almost anything in her five years as a prosecutor in Manhattan" . . .

ABC Entertainment, meanwhile, announced yesterday that "Lime Street" has been pulled off the air, as of last Saturday's broadcast, until sometime next year, when it will return in a new time slot . . .

"Lime Street" has been murdered by the NBC comedy lineup at 9 p.m. so far this fall, finishing dangerously close to the Final And Unless Your Star Is Robert Wagner Probably Fatal Five in the first two weeks of the new season. Last week, only because NBC went to baseball, "Lime Street" did climb to 35th in the weekly ratings . . .

With ABC set to air the World Series through the rest of October and big November sweeps specials in the offing on the network, the decision to pull "Lime Street" was easy. . . .

ABC "after consultation with Wagner" has decided to continue production of the series and said the hiatus "will give us an opportunity to redirect the production to focus on Wagner and his talents" . . .

ABC also confirmed yesterday that "Our Family Honor" will move to the drop dead 10 p.m. Friday time slot against "Falcon Crest" and "Miami Vice" the night of Nov. 8 . . .

It flip-flops with "Spenser: For Hire," which moves from 10 p.m. Fridays into "Our's" 10 p.m. Tuesday slot Oct. 29 . . .

Longtime CBS News legal correspondent Fred Graham yesterday confirmed that he will be leaving the network when his contract expires next Jan. 25 . . .

He said that "some time ago CBS News called my attorney, Bob Barnett, and said that 'we're not going to negotiate a new contract' " . . .

Graham said he has "lots of plans in the air. I was really ready for a change anyway. Two or three years ago I promised myself I was not going to be the oldest living Supreme Court reporter. I did the court for The New York Times and then for 13 years at CBS . . .

Graham said that he's been offered deanships at three university journalism departments and had been talking to several out-of-town law firms that might make him head of a Washington office dealing with media law practice . . .

Graham also said he has been talking to a couple of major broadcast groups outside the three networks, as well as a local Washington station and other stations outside this market . . .

"I've got a lot of options. I'm thinking of doing both law and TV. I'd like some TV presence concerning the law, perhaps as a public affairs show anchor" . . .

He said he won't make a decision until around Christmas . . .

One small irony: Since CBS decided not to renew, Graham, anchoring "Face the Nation" and "Nightwatch" periodically, in addition to regular "Evening News" appearances, has been on CBS more often than almost any other correspondent at the network . . .

CONUS Washington Direct, the new satellite news service launched recently by Hubbard Broadcasting, has named Joe Benton executive producer at the bureau here . . .

Benton, a former ABC News producer and correspondent, will be in charge of daily coverage at the White House, among other duties . . .

Incidentally Constant Callers: The mail address for Washington Direct is 400 North Capitol St., Suite 319, Washington, D.C. 20001. And yes, it's now listed in the phone directory . . . And Finally

From our My Guess Is That It Was Lime But The Publicist Dropped The Ball file: Robert Wagner got "green cake icing on his nose" Tuesday when Merv Griffin fed him the first bite of a cake at a post-taping studio party marking R.J.'s appearance as the 25,000th guest ever on Merv's syndicated talk show, which first aired in 1962 . . .