The ardfheis approved the party's mandatory code of conduct for office-holders and candidates without any opposition.
Proposing the motion, Mr MalColm Byrne (Wexford) criticised the Kerry North TD, Mr Denis Foley, who recently resigned from the parliamentary party after it was disclosed that he was being investigated by the Moriarty tribunal for holding an Ansbacher account.
Mr Byrne said the motion related to a key element in the debate about Irish politics. "It is a debate about the standards in public life which we, as members of Fianna Fail and citizens of Ireland, expect of our public representatives."
He said a year ago he had proposed a special ardfheis on the issue of perceived corruption within Fianna Fail. A small element had consistently damaged the party's name in the past years and months. "It is because of them that we require this code of ethics. It is not required for the vast majority of public representatives or party officials because they do not need a code of ethics to know how to serve their party and the people they represent effectively and efficiently."
He continued: "When the Public Accounts Committee presented its report before Christmas, it was hailed as a victory for politics. It showed what politicians could do. Yet a member of this party, at that time, damaged that report by some of his actions."
The test for the party was how ail it would deal with that sort of dishonesty.
"I say that the real test for this party, in terms of follow-through, is to say to people like Denis Foley that those type of actions are no longer acceptable within Fianna Fail; that kind of conduct is unbecoming a member of Fianna Fail; and that if you engage in it, it is time for you to get out of Fianna Fail."
The Minister for the Environment, Mr Dempsey, said the high standards which the party insisted on had not been lived up to in the past.
"Those people responsible for the lapses represent only a minute fraction of our total party membership. But, unfortunately, it is the lapses of the few, rather than the integrity and commitment of the masses, which tend to get the most attention and publicity."
The code of conduct was passed during a debate on organisation.
Ms Fiona O'Loughlin (national executive) said it was ail had was its members, who gave of their time, energy and commitment. "I believe it is very important that the party "bring people with different talents and energy and commitments" to positions of responsibility "and give everybody a chance to hold office".
To loud applause, Mr Frank O'Neill (Cavan-Monaghan) proposed a motion, which was passed, calling on the national executive to devise a scheme of annual contributions to the party from elected representatives.
"To be a politician today is similar to running your own business. But there are not many small business people today taking home the combined salary and expenses of a politician, be it the Taoiseach, an MEP, minister, TD or senator."
He said church-gate collections must cease. "It is a practice which is an outdated exploitation of the ordinary hardworking people. The day has come when grassroot members of Fianna Fail and cumainn members should no longer be exploited to finance the running of the organisation."