SHIP SURVEY

ENHANCED SURVEY PROGRAM

ENHANCED SURVEY PROGRAM

  • Enhanced survey programme is a guideline for shipping companies and owners to prepare their ship for special surveys to maintain the safety of the ship while at sea or at port.
  • A new chapter XI is added for special measures to enhance maritime safety under this resolution. According to these guidelines, it has 2 Annexes
    • Annex A: Guidelines on enhance survey programme of inspection during survey of bulk carrier.
      • Has 2 parts:
        • Part A: Single Skin
        • Part B: Double skin construction
      • Annex B: Guidelines on enhance survey programme of inspection during survey of oil tankers.
        • Has 2 parts:
          • Part A: oil tankers with double Hull Tankers
          • Part B: Oil tankers other than double hull
        • Each Part A & B has 9 chapters which are almost similar. The only dissimilarities being operational and constructional aspects of both type of vessels i.e. oil tankers and bulk carriers

The chapters

Chapter 1: General application, documentation onboard to be completed prior to the inspection which is to be served as basis for surveys

Chapter 2: Renewal Survey.

Chapter 3: Annual Survey

Chapter 4: Intermediate Survey

Chapter 5: Preparation of Survey

Chapter 6: Documentation on board.

Chapter 7: Procedure for thickness

Chapter 8: Reporting and evaluation.

HAVING CONSIDERED the recommendations made by the Maritime Safety Committee at its sixty-second session and the Marine Environment Protection Committee at its thirty-fourth session

    • the Guidelines on the Enhanced Programme of Inspections During Surveys of Bulk Carriers, set out in Annex A to the present resolution, and
    • the Guidelines on the Enhanced Programme of Inspections During Surveys of Oil Tankers, set out in Annex B to the present resolution

APPLICATION:

    • The Guidelines should apply to surveys of hull structure and piping systems in way of cargo holds, cofferdams, pipe tunnels, void spaces within the cargo length area and all ballast tanks. The surveys should be carried out during the surveys prescribed by the 1974 SOLAS Convention, as amended.
    • The Guidelines should apply to surveys of hull structure and piping systems in way of cargo holds, cofferdams, pipe tunnels, void spaces within the cargo length area and all ballast tanks. The surveys should be carried out during the surveys prescribed by the 1974 SOLAS Convention, as amended.

DEFINITION:

    • Bulk carrier is a ship which is constructed generally with single deck, top-side tanks and hopper side tanks in cargo spaces, and is intended primarily to carry dry cargo in bulk and includes such types as ore carriers and combination carriers
    • Representative spaces are those which are expected to reflect the condition of other spaces of similar type and service and with similar corrosion prevention systems. When selecting representative spaces account should be taken of the service and repair history on board and identifiable critical and/or suspect areas.
    • Close-up survey is a survey where the details of structural components are within the close visual inspection range of the surveyor, i.e. normally within reach of hand
    • Suspect areas are locations showing substantial corrosion and/or are considered by the surveyor to be prone to rapid wastage.
    • Substantial corrosion is an extent of corrosion such that assessment of corrosion pattern indicates a wastage in excess of 75% of allowable margins, but within acceptable limits

Coating condition is defined as follows:

      • GOOD – Condition with only minor spot rusting;
      • FAIR – Condition with local breakdown of coating at edges of stiffeners and weld connections and/or light rusting over 20% or more of areas under consideration, but less than as defined for POOR condition
      • POOR – Condition with general breakdown of coating over 20% or more of areas or hard scale at 10% or more of areas under consideration.
    • Critical structural areas are locations which have been identified from calculations to require monitoring or from the service history of the subject ship or from similar or sister ships to be sensitive to cracking, buckling or corrosion which would impair the structural integrity of the ship.

SURVEYORS

    • For bulk carriers of 20,000 tons deadweight and above, two surveyors should jointly carry out the first scheduled renewal survey after the bulk carrier passes 10 years of age (i.e. third renewal survey), and all subsequent renewal surveys and intermediate surveys.

 

ENHANCED SURVEY CARRIED OUT DURING PERIODICAL SURVEY

    • The enhanced survey may be commenced at the fourth annual survey and be progressed during the succeeding year with a view to completion by the fifth anniversary date
    • The survey should include, in addition to the requirements of the annual survey, examination, tests and checks of sufficient extent to ensure that the hull and related piping is in a satisfactory condition and is fit for its intended purpose for the new period of validity of the Cargo Ship Safety Construction Certificate, subject to proper maintenance and operation and to periodical surveys being carried out.
    • All cargo holds, ballast tanks, pipe tunnels, cofferdams and void spaces bounding cargo holds, decks and outer hull should be examined, and this examination should be supplemented by thickness measurement and testing as deemed necessary, to ensure that the structural integrity remains effective. The examination should be sufficient to discover substantial corrosion, significant deformation, fractures, damages or other structural deterioration

 

REQUIREMENTS FOR CLOSE-UP SURVEY AT PERIODICAL SURVEYS

Age ≤ 5 years5 < Age ≤ 10 years10 < Age ≤ 15 yearsAge > 15 years
Complete transverse web frame ring including adjacent structural membersONE WEB FRAME RING – in a ballast wing tank, if any, or a cargo wing tank usedALL WEB FRAME RINGS – in a ballast wing tank, if any, or a cargo wing tank used primarily for water ballastALL WEB FRAME RINGS – in all ballast tanks

 

ALL WEB FRAME RINGS – in a cargo wing tank

 

A minimum of 30% of all web frame rings in each remaining cargo wing tank

As for ships referred to in column 3 Additional transverses included as deemed necessary by the Administration
Deck transverse including adjacent deck structural membersONE DECK TRANSVERSE – in a cargo tankONE DECK TRANSVERSE – in each of the remaining ballast tanks, if any

 

ONE DECK TRANSVERSE – in a cargo wing tank

 

ONE DECK TRANSVERSE – in two cargo centre tanks

Transverse bulkheads complete – including girder system and adjacent membersBOTH TRANSVERSE BULKHEADS in a wing ballast tank, if any, or a cargo wing tank used primarily for water ballastALL TRANSVERSE BULKHEADS – in all cargo and ballast tanks
Transverse bulkhead lower part– including girder system and adjacent structural membersONE TRANSVERSE BULKHEAD – in a cargo wing tank

 

ONE TRANSVERSE BULKHEAD – in a cargo centre tank

ONE TRANSVERSE BULKHEAD – in each remaining ballast tank

 

ONE TRANSVERSE BULKHEAD – in a cargo wing tank

 

ONE TRANSVERSE BULKHEAD – in two cargo centre tanks

Deck and bottom transverse including adjacent structural membersA minimum of 30% of deck and bottom transverses including adjacent structural members in each cargo centre tank
Additional complete transverse web ring frameAs considered necessary by the Administration

 

  • REQUIREMENTS FOR THICKNESS MEASUREMENTS AT RENEWAL SURVEYS
Age ≤ 5 years5 < Age ≤ 10 years10 < Age ≤ 15 yearsAge > 15 years
One section of deck plating for the full beam of the ship within the cargo area (in way of a ballast tank, if any, or a cargo tank used primarily for water ballast)Within the cargo area:

.1 each deck plate

.2 one transverse section

Within the cargo area:

.1 each deck plate

.2 two transverse sections

.3 all wind and water strakes

Within the cargo area:

.1 each deck plate

.2 three transverse sections .3 each bottom plate

Measurements of structural members subject to close-up surveyMeasurements of structural members subject to close-up surveyMeasurements of structural members subject to close-up surveyMeasurements of structural members subject to close-up survey
Suspect areasSuspect areasSuspect areasSuspect areas
Selected wind and water strakes outside the cargo areaSelected wind and water strakes outside the cargo areaAll wind and water strakes in full length

 

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