negative interest and uncertainty in the market. contradictory clarifications. react to such incidents. issues. effectiveness. transparency and integrity," says Gregory. CP60:2004), and various other schemes. all in the bunker supply chain. considerations beyond rules and regulations. factors and technology have a role to play. the image of the bunker industry. Gregory. the bunker supply chain in Singapore. suppliers and major fuel testing companies. taken to segregate and remove non-conforming product from the supply chain. incidents cause problems. eliminating unacceptable practices. BQAP. chain. and continuous improvements to serve them better.