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Inspect Water Distribution EO 011.02

Inspect Water Distribution EO 011.02. Inspect Ship Water Supply. Characteristics. TP 14. Inspect Water Distribution. References World Health Organization October 2004, Rolling Revision of the WHO Guidelines for Drinking-Water Quality (Draft) Page 15

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Inspect Water Distribution EO 011.02

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  1. Inspect Water Distribution EO 011.02 Inspect Ship Water Supply Characteristics TP 14

  2. Inspect Water Distribution References • World Health Organization October 2004, Rolling Revision of the WHO Guidelines for Drinking-Water Quality (Draft) Page 15 • http://www.who.int/water_sanitation_health/hygiene/ships/shipsanitation/en Characteristics

  3. Ship Water Supply Introduction, Waterborne Disease / Health Concerns: Improperly managed water is an established infectious disease transmission route on ships. Most waterborne outbreaks involved ingestion of water that was contaminated with pathogens derived from human or animal excreta.

  4. Ship Water Supply Introduction, Waterborne Disease / Health Concerns: Chemical outbreaks of water poisoning have also occurred on ships. Contamination can arise on ship or from water uplifted at port or at sea.

  5. Ship Water Supply Waterborne Disease / Health Concerns Outbreaks are associated with: (1) contaminated bunkered water, (2) cross connections between potable and non-potable water, (3) improper loading procedures, (4) poor design and construction of potable water storage tanks; and (5) inadequate disinfection.

  6. Ship Water Supply

  7. Ship Water Supply Water Safety Plan: The GDWQ (Guidelines for Drinking Water Quality) are intended to cover a broad range of water supplies and are not specifically targeted towards ships. Therefore, in drawing from their guidance the specific context of the port and the ship needs to be taken into consideration.

  8. Ship Water Supply Water Safety Plan: The detection of contaminants in both source water and water delivered to passengers and crew is often slow, complex and costly. Sampling can only verify that the water was safe when tested by which time it may have been consumed. It is not suitable for early warning or control purposes.

  9. Ship Water Supply Water Safety Approach: A WSP (water safety Plan) approach is intended place the emphasis on preventing contaminated water reaching consumers by monitoring processes and practices. The objective is to detect possible contamination in time to enable correction to prevent suspect water being consumed. End-product testing then becomes more of a verification activity.

  10. Ship Water Supply Water Safety Plan (WSP): A WSP comprises three essential actions: (1) System assessment and hazard analysis; (2) Management plan and control measures; and (3) Monitoring and corrective action system in accordance with that plan.

  11. Ship Water Supply System Assessment and Hazard Analysis : The purpose of the system assessment is to determine whether a system has control measures in place which would ensure that the health based targets are consistently met. Health based targets will consist of one or a combination of three aspects: (1) Water quality targets; (2) Performance targets; or (3) Treatment targets.

  12. Ship Water Supply Management Plan and Control Measures: Management planning involves defining and specifying control measures. Control measures are those steps which directly affect water quality and which collectively ensure that water consistently meets health based targets.

  13. Ship Water Supply Management Plan and Control Measures: WSPs need to cover all stages including: (1) Assessment of source water loaded onto the ship; (2) The selection and operation of appropriate treatment processes; and (3) The prevention of re-contamination during storage and distribution.

  14. Ship Water Supply Monitoring and Corrective Action: Monitoring needs to take place in such a way that the possibility of contamination can be detected early enough that a corrective action can be completed to prevent contaminated water reaching passengers and crew.

  15. Ship Water Supply Verification Monitoring: The primary indicators of faecal contamination that have traditionally been used in water quality analysis are E. coli or thermotolerant coliforms.

  16. Ship Water Supply Documentation: Documentation and record keeping should be appropriate to the nature and size of the ship. Its purpose is to provide an evidence trail to support audit as well as to provide records to enable trends and system norms to be determined.

  17. Ship Water Supply Source Water: A port authority may receive potable water from either a municipal or private supply and usually has special arrangements for managing the water after it has entered the port. Water is delivered to ships by hoses on the dockside or transferred to the ship by water boats or barges.

  18. Ship Water Supply Transfer of Water from Shore to Ship: Water to be used for potable water purposes aboard ships must be provided with sanitary safeguards from the shore source, through the shore water distribution system, including connections to the ship system, and through the ship system at each outlet in order to prevent contamination or pollution of the water during ship operation.

  19. Ship Water Supply Watering Facilities at the Port: Facilities include piping, hydrants, hoses and any other equipment necessary for the delivery of water from shore sources at the pier or wharf area to the filling line for the ship's potable water system.

  20. Ship Water Supply Disinfection: Disinfection following filtration would provide the second barrier. Disinfection is most efficient when the water has already been treated to remove turbidity and when substances exerting a disinfectant demand, or capable of protecting pathogens from disinfection, have been removed as far as possible.

  21. Ship Water Supply Water Boats and Barges: Water boats and water barges are vessels especially constructed and equipped to receive and provide water for both potable and non potable water systems aboard ships under conditions where direct shore delivery is not practicable. These craft must be equipped with potable water tanks, water hose and hose fittings, pumps and independent pipe systems to provide potable water only to potable water systems on ships.

  22. Ship Water Supply Source Water Risk Management: Vessels using irregular ports, where water treatment is unreliable, may wish to carry equipment for basic testing (turbidity, pH, and chlorine residual) and ensure capacity to dose chlorine or filter to appropriate levels to provide a minimum level of safety.

  23. Ship Water Supply Questions

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