The plea came during a Forum hosted by the Lloyd Best Institute which took place at the Government Campus Plaza in Port of Spain.
During the session, there were several clashes between the company's Chairman, Wilfred Espinet, and President General of the OWTU, Ancel Roget.
Mr. Roget did not mince words as he criticised Petrotrin's management, and their capability to successfully treat with the challenges at hand.
In his presentation, Mr. Espinet maintained the Board's position that the company is unsalvageable unless there is a drastic change.
The union also called on Petrotrin's Board to honour the Memorandum of Understanding it signed with them back in April, saying the company has failed to commit to meeting the 18-month deadline stipulated in the MoU.