Presentation is loading. Please wait.

Presentation is loading. Please wait.

GWS SMS INTRODUCTION CHM Manual. 5.1 PHYSICAL PROPERTIES OF CHEMICAL CARGOES 5.1.1 Specific gravity 5.1.2 Vapour Pressure and Boiling Point 5.1.3 Freezing.

Similar presentations

Presentation on theme: "GWS SMS INTRODUCTION CHM Manual. 5.1 PHYSICAL PROPERTIES OF CHEMICAL CARGOES 5.1.1 Specific gravity 5.1.2 Vapour Pressure and Boiling Point 5.1.3 Freezing."— Presentation transcript:


2 5.1 PHYSICAL PROPERTIES OF CHEMICAL CARGOES Specific gravity Vapour Pressure and Boiling Point Freezing Point Cubical Expansion Vapour Density Solubility Electrostatic Generation Viscosity

3 5.2 HAZARDS OF CHEMICAL CARGOES Master should acquire the correct technical chemical name of the cargo to be loaded and its MSDS. Master and all those concerned should use the material safety data sheet and/or any other relevant information to acquaint themselves with all characteristics of each cargo to be loaded prior to handling such cargoes. Knowledge of the physical and chemical properties, hazards and response action to be taken in the event of emergency is essential for the safe and efficient carriage and handling of chemical cargoes.

4 Emergency Procedure The emergency procedure given on the data sheet is self-explanatory. All crew should be made familiar with emergency procedures such as the application of first-aid, use of breathing apparatus and protective clothing. For first response to an accident involving hazardous cargo, see Emergency Response Guidebook published by U.S. Department of Transportation and Company's Emergency and Contingency Manual (ECM).


6 5.8 CARGO LEAK /SPILL ON DECK If for any reason there is presence of cargo on the deck, irrespective of how small the quantity of cargo is, all relevant precautions for the cargo must be taken. For more details on the relevant precautions, please refer to section 5.8 of this manual.

7 6.1 CARGO INFORMATION IMO Code requires that certain information must be available on board the ship for each particular cargo, prior to loading, as follows: A full description of the physical and chemical properties, including reactivity, necessary for the safe containment of the cargo Compatibility with other materials Action to be taken in the event of spills and leaks Countermeasures against accidental personal contact. Fire fighting procedures and fire extinguishing media Procedures for cargo transfer, tank cleaning, gas freeing and ballasting Whether chemical is stabilized, and in case affirmative inhibitor details and certificate as per Tanker safety Guide chemical ( Appendix N) must be provided.

8 6.6 NOTICES Permanent Notices: Smoking spaces must be clearly designated by the Master Temporary Notices:  On Arrival at a terminal  when loading or unloading benzene  Additional notice, when hazardous chemicals are being handled  Personal protective equipment( PPE) warning during loading hazardous cargoes for visitors.

9 6.10 HOT WORK No hot work is permitted during cargo operations, tank cleaning and purging or inerting operations. No hot work is permitted at the terminal unless agreed between the ship and terminal. This is only acceptable when no other option is available. Proper precautions shall be taken to the satisfaction of both parties.

10 6.11 PUMP ROOM ENTRY No entry shall be made into the pump room without the permission of the Chief Officer. The pump room ventilation shall be kept running for at least 15 minutes prior entry into the pump room. The ventilation must be kept running throughout the period of entry. The pump room entry permit (F-S-0448) must be used prior making the entry.

11 6.19 PRECAUTIONS AGAINST ELECTROSTATIC HAZARD Commence loading and/or discharging at a slow rate. Restrict initial loading rates, especially when splashing and/or surface turbulence is likely to occur, to flow rates less than 1 meter/second. The loading manual shall be checked for any restrictions set up for the loading rate, which shall never be exceeded. Special care with regard to electrostatic hazard shall be taken when using sounding pipes which do not extend to the full depth of the tank. This hazard should be posted in the cargo control room as per sample provided in Annex 1

12 6.20 PRECAUTIONS DURING CARRIAGE OF TOXIC CARGOES. It is company policy that TLV, TWA, and MAC values shall not be exceeded in the course of normal work routines. The values used to control exposure shall be obtained from MSDS for the cargo, various chemical data guides or other appropriate guidelines. The lowest values obtained from the publications referenced shall be used for this purpose.

13 6.21 CARGO TANK PRESSURE (OVER AND UNDER PRESSURIZATION) Pressure in Cargo Tanks over the P/V valve setting may result in the release of vapour to the atmosphere. Serious structural damage can be caused by the over or under pressurization in tanks during cargo operations.

14 7.4 Respiratory Protection Use of Canister or filter type respirators on board the vessel is strictly prohibited. In case vessels have any such equipment on board, these shall be off landed for disposal, recorded and the Company informed of the same.

15 7.9.3 Level of Protection – PPE Requirement PPE Lop CoverallsSafety ShoesChem BootsHelmet Safety Glasses Chem GlovesChem GogglesFace ShieldSplash Suit* Gas Tight Suit** SCBA Level A R R RR Level B R R R R R R Level C RR C R RRCC Level D RR C RRCCCC * Chemical Splash Suit – with attached hood; can be 1 or 2 pieced, but cuffs and seems must provide positive closure ** Gas Tight Suit – with attached hood, boots and gloves PPE Requirements Code: “R” Required; “C” Consider

16 8.3 MAINTENANCE OF SYSTEMS AND EQUIPMENT For the following, kindly refer to CHM Section 8.3 Event of a defect or an unplanned maintenance requirement on the cargo system

17 8.4 SAFETY DEVICES AND CONTROLS AND ALARM SYSTEMS Any defect or deficiency related to safety devices or alarms related to cargo equipment which cannot be rectified prior commencing cargo operation must be reported to the superintendent in charge by a Phone call and NON ROUTINE message for further action.

18 Miscellaneous Cargo Equipment Guidelines The high level alarm, overfill alarm as well as the float level gauge must be checked / tested routinely as required by the PMS and prior commencement of cargo operations. Guidelines on calibration of Portable Gas Detectors are provided in MTM Chapter 16 Testing of the Load computer must be done 3 monthly by checking with the class approved test conditions provided and the chief officer should attest the test results. The ODME shall be maintained as per the maker’s recommendation and PMS. Monthly test run shall be carried out and records should be maintained on board. More Details on the above and other equipment may be obtained from the CHM Section 8.

19 10.2 PRE ARRIVAL CHECKS The responsible officer should complete pre- arrival check list related to safe cargo operation using (F-S-0412 & F-S-0415). When carrying toxic cargoes, Tightness of cargo tank, pipelines and system must be checked prior arrival as per checklist F-S When required vapor tightness certificate is to be provided as per F-S

20 10.3 PREPARING CARGO LOADING/UNLOADING PLAN Forms F-S /2/3 as part of cargo module must be used to prepare a cargo plan for each port. The cargo loading/discharging plans, ballast plans and the ship-shore information exchange are not required to be sent to office and must be maintained on board. These shall be checked for adherence to seasonal load line zones, UKC requirements, port restrictions and Shipboard limits, including maximum cargo capacities, loading and intermediate stress and stability condition during the superintendent’s visit on board.

21 10.4 SHIP SHORE INFORMATION EXCHANGE Form F- S – shall be used for ship shore information exchange and the Chief Officer and/or Master shall the ship-shore safety meeting with terminal representatives. The responsible officer should discuss and finalize the agreement on following as applicable with terminal: C ARGO I NFORMATION C ARGO L OADING P LAN C ARGO D ISCHARGE P LAN

22 10.5 SAFETY CHECKLIST All items on the company ISGOTT Safety Check List (F-S-0444) are to be checked by the Chief Officer and Terminal Representative. Where a terminal checklist is used, it must be ensured that the same encompasses all the items mentioned in the ISGOTT Safety Checklist.

23 Section 10 Reference and records F-S-0205 – Shipboard Watch keeping schedule F-S-0412 – Operation checklist before loading F-S Operation checklist before discharging F-S Checklist for tightness of COT F-S Vapour Tightness certificate F-S /2/3 – Cargo Planning Module F-S-0444 – Ship shore safety checklist F-S-0473 – Cargo sample disposal Log

24 11. Cargo Operations FOR ALL OPERATIONS LISTED BELOW, REFER TO CHM MANUAL Section 11: Loading Loading Methods – Loading Overall – Loading Procedure Start of Flow Control of Flow Planning in advance the actions on completion of Loading Final Ullage LINE CARGO FLUSHING COMPLETION OF LOADING – GAUGING AND CALCULATIONS LINE PIGGING This operation is a critical operation and must be executed under the direct supervision of Chief Officer. Risk assessment must be carried out prior undertaking such an operation. CLEARING OF SHORE LINES DISCHARGING – DISCHARGING PROCEDURE – TRIM AND LIST OF VESSEL

25 14 TANK CLEANING OPERATIONS The Chief Officer is responsible for preparing all tank cleaning plans and same must be approved by Master prior any operation. If any tank cleaning chemicals are present on board, which are not approved as per the MEPC 2 circular, they should be clearly marked as “DO NOT USE”, and liaise with company for off landing. MIRACLE tank cleaning guide may be referred for detailed guidance on properties and use of specific cleaning chemicals. The entire planning for tank cleaning operations shall be carried out in the Company’s Tank cleaning plan module (F-S-0470).

26 14. Tank Cleaning Operations If cargoes are highly water reactive, water must not be introduced into the tank. Prewash operation will be discussed closely between Master, Charterers and office for planning and hence not included as a separate step in the tank cleaning plan form. Spraying of flammable or toxic solvents in cargo tank is prohibited.

27 Due to the hazard of static electricity, introduction of steam into cargo tanks in non gas free condition is not permitted. Additional Guidance and information on tank inspection after cleaning is provided in Annex 5 of this manual. The proposed tank cleaning plan shall be forwarded to the Company for review and approval as soon as the voyage is confirmed and loading plan finalized. 14. Tank Cleaning Operations

28 F-S shall be utilized for updating all parties on the progress of tank cleaning operations and consumption of water/chemical. A RISK ASSESSMENT shall be conducted onboard and submitted to the office for approval and same must be received prior to commencing such tank cleaning operations. As a general rule, tank cleaning and gas freeing should not take place concurrently with cargo handling. Before gas freeing or tank cleaning is commenced the Chief Officer should be satisfied that the required precautions are being observed. For special cleaning methods, Tank cleaning plan must be finalized in discussion with the office prior commencing such operation. 14. Tank Cleaning Operations

29 TANK CLEANING BY VENTILATION As cargo residues with Vapor pressure greater than 5 Kpa at 20 deg C may pose safety related hazards due to toxicity and flammability due to the components of cargo, tank cleaning by Ventilation is not allowed on board our vessel.

30 Important Tank Cleaning Forms F-S-0470 Tank cleaning module F-S-0607 Cargo equipment inventory and control report

31 15 GAS FREEING & VENTING Gas freeing operation is critical operation and Chief Officer and in his absence an officer appointed by the Master must plan and supervise all Gas freeing operations Gas freeing capacity calculations Equipment and capacity review 15.7 Gas Testing and Measurement 15.8 Ventilating Double Hull Ballast Tanks


Download ppt "GWS SMS INTRODUCTION CHM Manual. 5.1 PHYSICAL PROPERTIES OF CHEMICAL CARGOES 5.1.1 Specific gravity 5.1.2 Vapour Pressure and Boiling Point 5.1.3 Freezing."

Similar presentations

Ads by Google