Skip to main content

Enclosed Space Entry

Preparation for enclosed space entry
  • Competent person and a responsible officer to take charge of operation.
  • Carried out risk assessments, identified potential hazards
  • Space isolated and secured against ingress of dangerous substances by blanking off pipe-lines or other openings and by closing valves.
  • Clean Sludge and deposits and ventilate space thoroughly
  • Test oxygen deficiency, flammability and toxicity to confirm space is safe to entry.
  • When space is safe for entry, "Enclosed space entry permit" has to be issued.
The procedure and arrangement before entry
  • Access to and within the space should be adequate and well illuminated. No source of ignition used.
  • Rescue and resuscitation equipment should be available at the entrance to the space.
  • Arrange means of hoisting physical inability person from the confined space.
  • Select only working number of personnel entering the space to rescue the physical inability person in any accident.
  • Lifelines should be long enough to be firmly attached to the harness.
  • Enclosed space entry permit posted at work site.
Procedure and arrangement during entry.
  • Ventilation continue at all the time. If ventilation fails, all personnel leave immediately.
  • Test atmosphere periodically and if conditions deteriorate, leave the space.
  • If a personal gas detector alarms, the space leave by all personnel immediately.
  • If unforeseen difficulties or hazards develop, the work in the space should be stopped and the space evacuated.
  • Permits should be withdrawn and only re-issued
  • If any personnel in a space feel adversely affected, give pre-arranged signal by entrance and immediately leave space.
Procedures on completion
  • Everyone leave the space, carried out head count, close entrance to space.
  • Record time of completion, Responsible person & Authorized person sign in permit
  • Entry engine room log book

Labels:

Comments

Post a Comment

If you have any doubts.Please let me know

Popular posts from this blog

Manganese bronze is not typically used as a propeller material .Why

1. High cost: Manganese bronze is a costly alloy, making it less economical for large propellers. 2. Low strength-to-weight ratio: Compared to other propeller materials like nickel-aluminum bronze or stainless steel, manganese bronze has a lower strength-to-weight ratio. 3. Susceptible to corrosion: Manganese bronze can corrode in seawater, especially when exposed to high velocities and turbulence. 4. Poor cavitation resistance: Manganese bronze is more prone to cavitation damage than other materials. 5. Difficult to cast and machine: Manganese bronze is challenging to cast and machine, making it less desirable for complex propeller geometries. 6. Limited weldability: Manganese bronze has poor weldability, making repairs and modifications difficult. Nickel-aluminum bronze or stainless steel are commonly used for propellers due to their: - High strength and durability - Excellent corrosion resistance - Good cavitation resistance - Ease of casting and machining - Weldability
107 comments
Read more

MAN B&W MC Engine VIT Pump

The pump is basically a jerk type with a plunger moving in a matched barrel, using two helical grooves machined in the plunger to control the end of injection by uncovering spill ports and causing the discharge pressure to drop rapidly, thus causing the needle valve in the injector to close. Oil is supplied to the barrel via the spill ports and a suction valve. The suction valve, situated at the top of the barrel opens when the pressure in the  barrel falls below the supply pump pressure; i.e. during downward stroke of plunger, while spill ports are covered by plunger. Replaceable erosion plugs  are fitted in the pump housing opposite the spill ports. The high pressure oil, spilling back, as the edge of the helix uncovers the s...
Post a Comment
Read more

Main engine interlocks

Interlocks are provided so that the engine can be started or reversed only when certain conditions have been fulfilled. When there is a remote control of engines, it is essential to have interlocks. This reduces the possibility of engine damage and any hazards to the operating personnel. Turning gear Interlock . This device prevents the engine from being started if the Turning gear is engaged. Running Direction Interlock . This prevents the fuel from being supplied if the running direction of the engine does not match the Telegraph. Starting Air Distributor in end position . This prevents starting from taking place if the shifting of the Distributor has not been completed. Main Lube. oil pressure, Piston cooling pressure, Jacket water pressure, and important parameters must be above the required minimum. Auxiliary Blower Interlock . The Auxiliary Blower is provided in case of Constant pressure turbo charging. Air Spring pressure Interlock . In case of the present generation...
9 comments
Read more