Enclosed Space Entry & Hot Work Safety | Shipboard Critical Operations | MMD Orals & Exam

Enclosed Space Entry & Hot Work Safety Explained | Shipboard Critical Operations | MMD Orals Guide This video explains the critical safety procedures for Enclosed Space Entry and Hot Work on board ships, two of the most hazardous operations carried out at sea. The focus is on identifying risks, understanding causes of accidents, and following correct procedures to protect life and prevent serious incidents. The first part of the video covers Enclosed Space Entry. Enclosed spaces are areas with limited openings, poor ventilation, and potential atmospheric hazards. Common shipboard enclosed spaces include ballast tanks, cargo tanks, cofferdams, double bottoms, chain lockers, pump rooms, and void spaces. Major hazards include oxygen depletion, presence of toxic or flammable gases, poor ventilation, restricted movement, and inadequate lighting. The video explains essential precautions before and during enclosed space entry. These include proper risk assessment by a competent officer, thorough atmosphere testing for oxygen content, toxic gases, and hydrocarbons, use of adequate lighting, and strict adherence to the permit-to-work system. A designated standby person must remain outside with continuous communication, while rescue equipment such as SCBA, stretchers, lifelines, and hoisting gear must be ready. Continuous gas monitoring, controlled number of entrants, and proper closure of permits after completion of work are emphasized. The second part focuses on Hot Work, including welding and cutting operations. Hot work is classified as a high-risk activity due to the possibility of fire, explosion, or suffocation. Common causes of hot work accidents include poor gas-freeing, presence of flammable residues, and lack of coordination with adjacent work areas. Key precautions for hot work include a work planning meeting, detailed risk assessment, appointment of a responsible officer, atmosphere testing, readiness of firefighting equipment, prevention of spark spread, adequate ventilation and lighting, arrangement of fire watchmen, use of proper PPE, and continuous gas detection. Pipelines and valves connected to the work area must be isolated by cold work, and clear escape routes must be maintained. Additional safety measures for gas welding and cutting are explained in detail. Gas cylinders must be stored upright and secured, oil and grease must be kept away from oxygen fittings, flame arresters must be fitted, correct pressure ratios maintained, and acetylene handled with extreme care. Immediate action is required in case of backfire or flashback, including closing valves and replacing damaged hoses. Leak testing with soap water, correct hose handling, proper ignition methods, and prohibition of oxygen for ventilation are strictly highlighted. This video is essential for Merchant Navy cadets, deck and engine officers, safety officers, and candidates preparing for MMD orals and onboard safety assessments. 🌐 CONNECT WITH SAILOR RIDER YouTube:    / @sailor_rider   Facebook:   / 19imzynlrp   Instagram:   / sailor_rider   Threads: https://www.threads.com/@sailor_rider 🏷 SEO enclosed space entry ship hot work safety ship permit to work enclosed space shipboard safety procedures oxygen deficiency ship toxic gas hazard ship hot work permit ship welding safety ship fire prevention onboard mmd orals safety #EnclosedSpace #HotWork #ShipSafety #PermitToWork #MerchantNavy