Use of tools for ships maintenance onboard chemical tankers
Careful consideration should be given while performing shipboard maintenance job onboard modern chemical tankers. Following guideline might be helpful while using various tools for ship's maintenance.
Use of Power tools: Although grit blasting and the use of mechanically powered tools are not normally considered to fall within the definition of hot work, both these operations should only be permitted under controlled conditions.
Use of Power tools: Although grit blasting and the use of mechanically powered tools are not normally considered to fall within the definition of hot work, both these operations should only be permitted under controlled conditions.
The work area should not be subject to vapour release or a concentration of combustible vapours, and should be free from
combustible material. The area should be gas free, and tests with a combustible gas indicator should give a reading of not
more than 1% LFL. The ship must not be alongside at a terminal. There must be no cargo, bunkering, ballasting, tank
cleaning or gas freeing operations in progress.
The hopper and hose nozzle of a grit blasting machine should be electrically earthed to the deck or the fitting to be blasted. There is a risk of perforation of pipelines when grit blasting or chipping, and great care must be taken over planning such work. Cargo and inert gas pipelines should not be blasted or mechanically chipped unless the entire ship is gas free. Adequate fire fighting equipment should be laid out and ready for immediate use.
Hand tools
The use of hand tools such as chipping hammers and scrapers for steel preparation and maintenance may be permitted without a hot-work permit. Their use must be restricted to deck areas and fittings not connected to the cargo system. The work area should not be subject to vapour release or a concentration of combustible vapours. The area should be gas free and clear of combustible materials. There must be no cargo, bunkering, ballasting, tank cleaning or gas freeing operations in progress.
Work on cargo pipelines and inert gas pipelines should be subject to the same precautions as applies to power tools.
Other Info pages
Cuprous alloys for shipbuilding of seagoing chemical tankers
Copper and its alloys corrode in many cargoes and may contaminate them, e g styrene, phenol, vinyl chloride, aniline, ammonia solutions etc. Check your cargo against information . Particularly aggressive are the ammonia compounds; they cause inter -crystalline corrosion of cuprous alloys very rapidly. The object in question disintergrates very soon. ....
Use of magnesium and alluminium alloys as sacrificial anodes
Alloys of magnesium and aluminium should never be used in the cargo tank area, due to their poor corrosion resistance in such environments. .....
Introducing rubber lined tanks for the transport of phosphoric acid, waste acids and hydrochloric acid
In recent years a number of ships have been fitted with rubber lined tanks, for the transport of phosphoric acid, waste acids and hydrochloric acid. .....
Tools for shipboard maintenance
Although grit blasting and the use of mechanically powered tools are not normally considered to fall within the definition of hot work, both these operations should only be permitted under controlled conditions. ......
Sea transport of various liquid chemicals at sea
Chemical tankers primarily transport organic and inorganic chemicals as well as vegetable oils and fats. The total global volume of chemicals is estimated at approximately 60 million metric tonnes per year. In addition, the transportation of vegetable oils, alcohols, molasses and lubricating oils amounts to 40 - 45 million tonnes per year. .....
stainless steel as shipbuilding materials for chemical tankers
Iron, steel Mild steel and high tensile steel is, and will continue to be the most important material in the building of chemical tankers and their cargo tanks.Steel is attacked by only a few products, mainly acids and, of course ballast and washing water. Steel itself contaminates very few products, one of them being high purity caustic soda. .... ....
Types of various chemical tankers at sea
modem chemical tanker is primarily designed to carry some of the several hundred hazardous products now covered by the IMO Bulk Chemical Codes. The following general types of chemical carriers have developed since the trade began: ....
Related info:
Categories of dangerous chemical cargo at sea
Ship shore safety checklist while alongside a terminal
Main Info pages!
Home page ||| Chemical hazards ||| Cargo planning & Stowage ||| Cargo loading ||| Cargo documents ||| Safe stability ||| Cargo care ||| Preparation for unloading ||| Inert gas systems |||Gas freeing ||| Nitrogen handling ||| Chemical handling Safe practice |||Handling equipments ||| Cargo & Ballast pumps ||| Cargo tanks |||Tank cleaning |||Special cargoes |||Spills emergencies |||Fire protection
Chemicaltankerguide.com is merely an informational site about various aspects of chemical tankers and safety tips that may be particular value to those working in: Chemical Handling, Chemical Storage, Liquefied Chemical Suppliers, Chemical Shipping, Chemical Transportation, Chemical Terminals, Bulk Chemical Services and Chemical Processing. If you are interested in finding out more about chemical tanker guideline please visit IMO official website. For any comment please Contact us
Copyright © 2011 Chemical Tanker Guide.com All rights reserved.
The hopper and hose nozzle of a grit blasting machine should be electrically earthed to the deck or the fitting to be blasted. There is a risk of perforation of pipelines when grit blasting or chipping, and great care must be taken over planning such work. Cargo and inert gas pipelines should not be blasted or mechanically chipped unless the entire ship is gas free. Adequate fire fighting equipment should be laid out and ready for immediate use.
Hand tools
The use of hand tools such as chipping hammers and scrapers for steel preparation and maintenance may be permitted without a hot-work permit. Their use must be restricted to deck areas and fittings not connected to the cargo system. The work area should not be subject to vapour release or a concentration of combustible vapours. The area should be gas free and clear of combustible materials. There must be no cargo, bunkering, ballasting, tank cleaning or gas freeing operations in progress.
Work on cargo pipelines and inert gas pipelines should be subject to the same precautions as applies to power tools.
Other Info pages
Cuprous alloys for shipbuilding of seagoing chemical tankers
Copper and its alloys corrode in many cargoes and may contaminate them, e g styrene, phenol, vinyl chloride, aniline, ammonia solutions etc. Check your cargo against information . Particularly aggressive are the ammonia compounds; they cause inter -crystalline corrosion of cuprous alloys very rapidly. The object in question disintergrates very soon. ....
Use of magnesium and alluminium alloys as sacrificial anodes
Alloys of magnesium and aluminium should never be used in the cargo tank area, due to their poor corrosion resistance in such environments. .....
Introducing rubber lined tanks for the transport of phosphoric acid, waste acids and hydrochloric acid
In recent years a number of ships have been fitted with rubber lined tanks, for the transport of phosphoric acid, waste acids and hydrochloric acid. .....
Tools for shipboard maintenance
Although grit blasting and the use of mechanically powered tools are not normally considered to fall within the definition of hot work, both these operations should only be permitted under controlled conditions. ......
Sea transport of various liquid chemicals at sea
Chemical tankers primarily transport organic and inorganic chemicals as well as vegetable oils and fats. The total global volume of chemicals is estimated at approximately 60 million metric tonnes per year. In addition, the transportation of vegetable oils, alcohols, molasses and lubricating oils amounts to 40 - 45 million tonnes per year. .....
stainless steel as shipbuilding materials for chemical tankers
Iron, steel Mild steel and high tensile steel is, and will continue to be the most important material in the building of chemical tankers and their cargo tanks.Steel is attacked by only a few products, mainly acids and, of course ballast and washing water. Steel itself contaminates very few products, one of them being high purity caustic soda. .... ....
Types of various chemical tankers at sea
modem chemical tanker is primarily designed to carry some of the several hundred hazardous products now covered by the IMO Bulk Chemical Codes. The following general types of chemical carriers have developed since the trade began: ....
Related info:
Categories of dangerous chemical cargo at sea
Ship shore safety checklist while alongside a terminal
Main Info pages!
Home page ||| Chemical hazards ||| Cargo planning & Stowage ||| Cargo loading ||| Cargo documents ||| Safe stability ||| Cargo care ||| Preparation for unloading ||| Inert gas systems |||Gas freeing ||| Nitrogen handling ||| Chemical handling Safe practice |||Handling equipments ||| Cargo & Ballast pumps ||| Cargo tanks |||Tank cleaning |||Special cargoes |||Spills emergencies |||Fire protection
Chemicaltankerguide.com is merely an informational site about various aspects of chemical tankers and safety tips that may be particular value to those working in: Chemical Handling, Chemical Storage, Liquefied Chemical Suppliers, Chemical Shipping, Chemical Transportation, Chemical Terminals, Bulk Chemical Services and Chemical Processing. If you are interested in finding out more about chemical tanker guideline please visit IMO official website. For any comment please Contact us
Copyright © 2011 Chemical Tanker Guide.com All rights reserved.