Pancyprian TS Marine Mech. II: Maritime safety and occupational health and safety in the engine room

This domain tests the safety culture of the machinery space: fire prevention and response, enclosed space entry, permit-to-work discipline and the everyday hazards of noise, heat, chemicals and moving machinery. Questions often present a scenario and ask whether work may proceed.

Fire and emergency response

Fire needs fuel, oxygen and heat; classes A, B, C and D demand different extinguishing media. Machinery spaces usually have fixed CO2, foam or water mist, backed by portable extinguishers, detection and pre-discharge alarms.
Before fixed CO2 release, the space is evacuated, accounted for and sealed; reopening too early risks re-ignition from hot surfaces.
Hot work needs a permit, fire watch, removal or protection of combustibles, gas testing and a check of adjacent spaces.
Drills, muster list, escape routes, EEBDs and fireman's outfits must be known and used correctly.

Enclosed space entry

Entry requires a permit, risk assessment, isolation of machinery and lines, ventilation, and testing at several levels before and during entry.
Acceptable atmosphere: oxygen about 20.9 %, hydrocarbons below 1 % LFL, toxic gases within the limits of the company procedure, typically a few ppm.
A standby man at the entrance with communications, rescue equipment and breathing apparatus is mandatory; continuous monitoring continues throughout.

Occupational health and safety

PPE, machine guarding, lock-off and isolation, permits for electrical, aloft and over-side work.
Noise action levels around 80 and 85 dB(A) require assessment, signage and hearing protection; heat stress and vibration are also assessed.
Chemicals need safety data sheets, labelling, ventilation and spill kits; slips, trips and manual handling cause most injuries; near misses are reported.

Worked example

A tank entry permit records oxygen 19.5 %, LEL 0 %, CO 3 ppm, H2S 0 ppm. Entry must be refused, because oxygen below about 20.5 % impairs judgement and can cause rapid collapse even with no flammable or toxic gas present. The space is ventilated and retested at top, middle and bottom before a new permit is issued.

Traps

Attempting rescue without breathing apparatus; accepting a single gas reading as proof of a safe atmosphere; treating LEL 0 % as safe when oxygen is low; releasing CO2 into a space that is not sealed; allowing hot work on a permit issued for another space.

Pollution prevention: MARPOL in engine room practice

This domain tests the MARPOL rules an engineer actually operates: oily water and sludge control, the Oil Record Book, garbage and sewage limits, and the air pollution rules that now dominate fuel management. Expect scenario questions on whether a discharge or a record is lawful.

Annex I: oil

Machinery space bilge water may only leave the ship through 15 ppm oil filtering equipment with an alarm and automatic stopping device; the oily water separator must be operated and maintained correctly.
Sludge goes to the oil residue tank and is disposed of by incineration, landing ashore or approved means; it is never fed to the separator.
The Oil Record Book Part I records ballasting, cleaning, discharge, sludge transfer and disposal; entries are signed by the officer in charge and each page by the master, retained for three years, with no erasure or back-dating.
SOPEP provides the emergency response and reporting procedure.

Annexes II to VI in outline

Annex II: noxious liquid substances; Annex III: harmful substances in packaged form; Annex IV: sewage; Annex V: garbage, with a Garbage Record Book and a general ban on plastics overboard.
Annex VI: sulphur limit 0.50 % m/m globally, 0.10 % in ECAs; NOx Tier limits for new engines; controls on ozone-depleting substances and incinerators; SEEMP and carbon intensity reporting; bunker delivery notes kept for three years.

Worked example

An engine burning 2.4 m³/h must change from 2.50 % sulphur HFO to 0.10 % sulphur MGO before entering an ECA. The fuel system from service tank to engine holds 7 m³. Complete changeover needs about three system volumes of flushing, roughly 21 m³, which at 2.4 m³/h takes about 9 hours, so changeover must start well before the boundary. Time and position are recorded, and the BDN is retained for three years.

Traps

Making an ORB entry after the event; applying 0.50 % inside an ECA; routing sludge through the oily water separator; resetting the 15 ppm alarm and continuing discharge; assuming a BDN is a fuel certificate of quality for all purposes.

Maritime legislation, STCW requirements, watchkeeping and engine room administration

This domain tests the legal and administrative frame around the engine room: which convention requires what, what certificate or rest hour applies, and how a watch is taken over, kept and handed back with proper records.

Legal framework

IMO instruments include SOLAS, MARPOL, STCW, COLREG, Load Line, Ballast Water Management, AFS and MLC 2006. Flag state implements, port state control verifies, and class surveys the structure and machinery under SOLAS.
The ISM Code requires a safety management system with a Document of Compliance for the company and a Safety Management Certificate for the ship; non-conformities, drills and familiarisation are recorded.
The Minimum Safe Manning Document sets the crew; ISPS covers security levels and access control.

STCW and rest hours

Certificates of Competency carry flag state endorsements; supporting certificates of proficiency cover advanced fire fighting, personal survival, first aid and PSSR, and require refresher training.
Minimum rest: 10 hours in any 24-hour period and 77 hours in any 7-day period; rest may be split into no more than two periods, one of at least 6 hours, with an interval between consecutive rest periods of no more than 14 hours.
Fitness for duty applies to alcohol, drugs, medication and fatigue; records of rest are maintained and signed.

Watchkeeping and administration

Before taking over, the engineer checks machinery parameters, ongoing work, defects, tank levels and standing orders; handover is confirmed with the bridge and with the relieving engineer.
UMS operation requires alarms to the bridge and cabin, engineer's call, deadman alarm and periodic rounds; the watchkeeper still owns the watch.
Records include the engine log, bell book, oil record book, bunkering records, PMS entries and defect reports; defects beyond the crew's capability go to the company with class notification where relevant.

Worked example

A junior engineer's rest record for one 24-hour period shows 22:00-02:00 (4 h), 06:00-09:00 (3 h) and 13:00-16:00 (4 h): 11 hours total, so the daily minimum is met, but rest is split into three periods. STCW allows no more than two rest periods, one of at least 6 hours, so the schedule is non-compliant and must be changed.

Traps

Counting a calendar day rather than any 24-hour period; signing rest records retrospectively; ignoring the 77-hour weekly total; accepting a photocopy of a certificate without an endorsement; believing UMS removes the duty to keep a proper watch.