122.Solas chapter 12

            SOLAS XII – ADDITIONAL SAFTEY MEASURES FOR BULK CARRIERS

   SUMMARISED EDITION

-       Damage stability requirements

-       Structural dimensions

-       Surveys

-       Booklet – info on compliance with this regulation regarding

-       Solid cargoes density declaration

-       Loading instrument

-       Hold , ballast space dry space, water ingress alarms

-       Pumping systems – remote operation

-       Restrictions for sailing with hold empty

   DAMAGE STABILITY REQUIREMENTS

   If the bulk carrier is of L > 150 m Single skin and double skin (provided the inner long           plating is < B/15 or 11.5 m from the outer shell) Carriers cargo > 1000 kg/m3 If its loaded       to summer load line THEN SHOULD BE CAPABLE OF WITHSTANDING FLOODING OF     ONE FULL CARGO HOLD

   
   NOW , L >150 Cargo density > 1.7 kg/m3

-       A THEN SHOULD BE ABLE TO WITHSTAND FORE MOST CARGO HOLD FLOODING

   HERE , FLOODED WOULD MEAN Flooded till the outside water line. Permeability of           loaded cargo hold is assumed – 0.9 And permeability of empty cargo hold is assumed –       0.95

   STRUCTURAL DIMENSION

-       If the cargo hold is double skinned – then the stiffening members outside the hold
   So that the members don’t restrict cargo the distance b/w the outer plating and inner             plating should not be less than 1000 m Should be enough for people to pass through and     conduct survey

   Cargo shouldn’t be carried in those spaces

   if ladders are present in the side spaces , the min free space should not be less than 600     mm

   If any single sct member fails, the whole sct should nt be jeopardised

-       Should facilitate normal loading of cargo – i.e. should have adequate strength if the cargo     of a specific density is dropped via a conveyor belt onto the holds 

   SURVEYS

-       
        Bulk carriers of L > 150 m Which is more than 10 yrs old Cannot carry bulk cargoes of           density > 1.7 kg/m3 unless they are permitted to do so by the admin

   PERIODICAL SURVEYS

-       Conducted in accordance with ENHACED SURVEY PROGRAM ,

-       Inspection carried out on all cargo hold, hatches , hatch covers – and they are                       ensured safe

   LODICATOR SOFTWARE

-       The bulk carriers L > 150 m shall be equipped with a  software that helps in calculation of     shear stress, bending moments

   BOOKLET

-       It should also be presented with a booklet that would clearly state that the bulk carrier has     successfully complied with the regulation 4,5,6,7 of this annex 

-       This booklet is endorsed by admin 

   Which are namely    - DAMAGE STABILITY
   - Sct requirements
   - Surveys

  SOLID CARGOES DENSITY – DECLARATION

-       Prior to loading, the shipper shall declare the density of the cargo along with cargo                 information

-       Any cargoes with density between 1.2 to 1.7 shall have its density verified by an                     accredited organisation

   HOLD S BALLAST SPACE WATER INGRESS ALARMS

-       
        All bulk carriers should be fitted with water ingress alarms at every cargo hold – audio and     visual (at CCR, BRIDGE , ECR)

-       Remember – visual alarm to clearly indicate the different level of liquid Working

-       0.5 m  (from the inner plating of the hold ) – audible and visual alarm

-       15% of tk capacity not more 2 m – audio and visual alarm

-       The alarm should be fitted in the aft of cargo holds

-       Overriding arrangement also should be provided (if the tanks are ballasted)

-       In fwd of coll bh – alarm at 10% of tank capacity except chain locker , any other room fwd     of collision bh – 0.1 m above the deck water ingresses – alarm

   PUMPING SYSTEMS

-       Any holds, ballast fwd of collision bh should have appropriate pumping arrangements

-       This should be facilitated with activation of pumping systems from BRIDGE, ECR, CCR

-       Ensure, personnel presence locally is not required (i.e. he hasn’t go to the free board             deck to start the operation)

-        

-       Opening and closing of valves – REMOTE operation is accepted

   RESTRICTION FROM SAILING WITH ANY HOLD EMPTY – If cannot meet flooding             requirements

-       L> 150m Single skin Density > 1.7

   If cannot meet the requirements of single cargo hold flooding These ships then, cannot         sail with a single cargo hold loaded < 10% of the max cargo capacity of that hold – after       loading to summer load line

   FOR THOSE SHIPS WHICH CANNOT COMPLY TO THE REQUREMENTS

-       
        Frequent surveys carried out on cargo hold and sct regarding its maintenance

-       Water ingress alarms in all holds

-       Possible flooding scenarios and guidelines of evacuation plan for crew members

   USE OF ISOLATION VALVE

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         If any part of line ruptures we can isolate it by shutting the isolating valve for that section        thus maintaining the fire line integrity

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