Assessor location Farrer Park / Serangoon Rd, Central. Job Type Temporary. Company Name Assessor Confinedspace. Education Level Professional Certifications (e.g. ACCA, CPA). Dear employer, I am a freelance Part time Confined Space Safety Assessor / Hot-work Assessor, services at affordable rate. I have 10 years experience in Shipyards and Oil & Petrochemicals, Pub/construction /tunnel. /man hole /compartment Experience.