A whistle-blower says he wasted his time and money taking part in a high-level inquiry into shoddy work at Hong Kong’s most expensive rail project, warning he may take legal action over the findings. Jason Poon Chuk-hung, managing director of subcontractor China Technology Corporation, said on Wednesday he was studying whether to launch a judicial review against the government and the commission of inquiry, which concluded in an interim report that the work was safe . “I am now studying with my lawyers the possibility of launching a judicial review against the concerned parties over the findings as it is obvious there are some errors in the report,” he told a radio programme. “And also that this report has failed to consider all the facts.” Main contractor Leighton Contractors (Asia) hired China Technology to carry out concreting work for the expanded platform at the Hung Hom station stop of the HK$97.1 billion (US$12.3 billion) Sha Tin-Central link. Allegations surfaced that steel bars used in reinforced concrete were cut short to fake proper installation into couplers on the platform and also that there had been unauthorised design changes. On Tuesday, the commission, chaired by Michael Hartmann, a former non-permanent judge on Hong Kong’s top court, released its interim report on the scandal. Despite saying work was not executed to plan, with “isolated and sporadic incidents” of bars being shortened, it concluded the platform was safe and did not need rebuilding or strengthening. Why is Hong Kong’s MTR hurtling from one disaster to another? Poon said: “We are now looking at whether the government and its Executive Council have done wrong in adopting the report, and whether the commission of inquiry has made an inappropriate decision which was not based on all the facts and excluded some important viewpoints.” Chief Executive Carrie Lam Cheng Yuet-ngor said on Tuesday the commission conclusions “should help allay public concerns over the project’s safety”. But Poon, calling the inquiry “a waste of his time and money” after spending more than half a year helping it, said the commission had failed to consider the latest opinions of Professor Francis Au, department head of civil engineering of the University of Hong Kong. The government appointed him as an independent expert to give his views to the commission. He said Au reviewed the platform’s internal stresses but the analysis was only submitted to the commission after it handed over its interim report to the government in February. “According to Au’s latest structural analysis, there are many places not structurally safe. However, the commission has failed to consider his viewpoints and revise its interim report accordingly. The government also failed to take account of the latest views of Au,” Poon argued. “I am not saying the structure is not safe. But I can only be convinced about its safety if the commission has taken all the objective and independent views of the testifying experts.” Jacob Kam Chak-pui, incoming CEO of rail operator the MTR Corporation , said he hoped the firm could make a decision before August on whether to partially open the link as the move would involve lots of changes including to the signalling system. He added that they would wait until the final analysis on the station was completed before deciding whether to conduct strengthening works. “We have the responsibility to make a final analysis of the situation before we can assess whether there is a need to conduct strengthening works,” he said. So far 27 per cent out of 48 steel bars checked were found to be substandard as the embedded length should be at least 37mm.