By Joe Lopez,2014-12-20 15:38
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13.1 General Provisions

13.1.1 Definition of terminology in the chapter “Fire-resistant material” means a material which neither

    burns nor gives off flammable vapours in sufficient

    quantity for self-ignition when heated to approximately

    750 ?, materials other than which are all defined as

    combustible materials. “Low flame spread” means a material due to surface

    property of which the spread of flame can be effectively

    restricted. “Steel or other equivalent materials”, in which the

    “equivalent materials” mean any fire-resistant materials

    which, by itself or due to insulation provided, has

    structural integrity properties equivalent to steel at the

    end of applicable exposure to a standard fire test. “A standard fire test” means one that specimens of

    relevant bulkhead or deck are exposed in a test furnace

    to temperatures corresponding approximately to the

    standard time-temperature curve. The specimen shall 2have an exposed surface of not less than 4.65 m and

    height (or length of deck) of not less than

    2.44m.,resembling as close as possible the intended

    structure and including where appropriate at least one


    The standard time-temperature curve is defined by a

    smooth cure drawn through the following temperature

    points measured above the initial furnace temperature:

    At the end of first 5 minutes-------556 ?

    At the end of first 10 minutes------659 ?

    At the end of first 15 minutes------718 ?

    At the end of first 30 minutes------821 ?


At the end of first 60 minutes------925 ? „Class “A” division‟ means those divisions formed by bulkheads and decks which comply with the followings:

    (1) They shall be constructed of steel or other

    equivalent materials;

(2) They shall be suitably stiffened;

    (3) They shall be so constructed as to be capable of

    preventing the passage of smoke and flame to the

    end of one hour standard fire test;

    (4) They shall be insulated with the approved

    fire-resistant materials so that the average

    temperature of the unexposed side will not

    increase more than 139 ? above the original

    temperature, nor will the temperature, at any one

    point including any joint, increase more than

    180 ? above the original temperature, within the

    time as listed below:

    Class “A-60” 60 minutes

    Class “A-30” 30 minutes

    Class “A-15” 15 minutes

    Class “A-0” 0 minutes

    (5) The specimen of bulkheads and decks used for

    Class “A” division shall be fire tested according to

    the requirement of “ standard fire test” of

    of this Article, and the results of the test shall be

    approved be the Certifying Survey Agency. „Class “B” division‟ means those divisions formed by bulkheads, decks, ceilings or linings which comply with the followings:

    (1) They shall be so constructed as to be capable of

    preventing the passage of flame until the end of

    the first half hour of the standard fire test;


    (2) They shall be insulated so that the average

    temperature of the unexposed side will not

    increase more than 139 ? above the original

    temperature, nor will the temperature, at any one

    point including any joint, increase more than

    225 ? above the original temperature, within the

    time listed below:

    Class “B-15” 15 minutes

    Class “B-0” 0 minutes

    (3) They shall be constructed of proven fire-resistant

    materials with the exception that combustible

    veneer would be used if they meet other

    requirements of this Chapter. „Class “C” divisions‟ are divisions constructed of proven fire-resistant materials. They are not needed to meet neither the requirements related to the passage of smoke and flame, nor the limitation related to temperature rise. Combustible veneers can be used if they meet requirements of this Chapter.

    13.1.2 Fire control plan and fire safety notice

    Charts for fire control and fire extinguishing general arrangement shall be available in the specified locations on the platform. The charts shall clearly indicate for each

     deck, various control stations, each fire section enclosed by class A division, the sections enclosed by class B division, hazardous areas, fire and flammable gas detection and alarm system, the sprinkling devices, fire fighting equipment, detail of access facilities to each compartment and deck, and ventilation system(including locations of fan control, location of dampers and identification numbers of the ventilation fans for each section)

    13.2 Fire Protection Structure and Escape Route

    13.2.1 Fire Protection structure (fire integrity of bulkhead and decks).

    13-3 This article is applicable to the steel structural bulkheads, decks and houses constructed on the platform. The above mentioned steel structures may be

    constructed of other materials (equivalent materials) of the same safety standard with steel , after verified by the Certifying Survey Agency. In addition to the fire integrity of the bulkheads and decks as mentioned in 13.2.1, 13.2.2 of this Article to be complied, the minimum fire integrity of all bulkheads and decks shall be determined as prescribed in table 13.2.1 and 13.2.2 . Exterior boundaries of deck houses and accommodation space including any overhanging decks which support such accommodation space shall be constructed to “A-60” standard for the whole of the

    portion which faces and is within 30 m of the center of the rotary table. Where the drilling rig is located on a movable substructure, the 30 m shall be measured with the substructure at its closest drilling position to the accommodation. The following requirements shall be applicable to table 13.2.1 and 13.2.2 :

    (1) Table 13.2.1 and 13.2.2 shall apply respectively to

    the bulkheads and decks separating adjacent


    (2) In order to determine the appropriate fire integrity

    standards to be applied to divisions between

    adjacent spaces, such spaces are classified

    according to their fire risk, as shown in categories

    (1) to (11) below. The number in parenthesis

    preceding each category refers to the applicable

    column or row in the tables:

    1) “Control stations” are spaces fitted with equipment

    listed hereunder: radio communication sets,

    emergency power supply, central control panel,

    emergency shutdown control panel, fire and gas

    panel, centralized fixed fire extinguishing system.

2) “corridors” mean corridors and lobbies.


    3) “Accommodation spaces” mean public spaces

    (halls, dining room, lounge and similar

    permanently enclosed spaces), bed rooms, offices,

    clinics, recreation room and similar spaces.

    4) “Stairways” are interior stairways, lifts (other than

    those wholly contained in category “A” or within

    other machinery spaces) and enclosures thereto.

    In this connection a stairway which is enclosed

    only at one level shall be regarded as part of the

    space from which it is not separated by a fire door.

    5) “Service space” (low risk) are drying rooms,

    laundry rooms, lockers and storerooms in which

    flammable materials are not stored.

    6) “Machinery spaces of Category A” mean spaces

    installed with equipment listed hereunder and

    trunks to such spaces:

    Internal combustion type machinery with

    aggregated total power of not less than 375 KW,

    any oil fired boiler or oil fuel unit.

    7) “Other machinery spaces” are spaces installed

    with the equipment listed hereunder and trunks to

    such spaces:

    Steam engine, internal combustion engine,

    generators and other major electrical machinery,

    refrigerator, ventilation and air conditioning

    machinery and similar spaces.

    8) “Hazardous areas” mean the spaces specified in

    2.3.6,2.3.7 of the Rules.

    9) Service spaces with higher fire risks refer to

    lockers, storerooms and working spaces where

    flammable materials are stored, galleys, pantries

    containing cooking appliances, paint room , light

    room,and workshops other than those forming part

    of the “A” category machinery spaces and other


    machinery spaces.

    Working spaces mean those open or enclosed

    spaces containing equipment associated with

    drilling or oil (gas) production operations.

    10) “Open decks” mean open deck spaces, excluding

    hazardous areas.

     11) “sanitary and similar spaces” are communal

    sanitary facilities such as showers, baths, lavatories,

    etc., and isolated pantries containing no cooking

    appliances. Sanitary facilities which serve one space

    and with access in the space shall be considered a

    portion of that space in which they are located. Continuous class “B” ceilings or linings in association

    with relevant decks or bulkheads may be accepted as contributing wholly or in part to the required insulation and integrity of a division. In confirming the details of structural fire protection, the

    risk of heat transfer at intersections and terminal points

    of required thermal barriers shall be considered. Windows shall be of non-opening type, but the windows

    outside of hazardous areas can be of opening type

    subject to the approval of the Certifying Survey Agency. External doors of deckhouses shall be constructed with

    steel or equivalent materials and be self-closing,

    wherever practicable. The fire resistance of other doors

    shall, as far as practicable, be equivalent to that of the

    division where they are fitted.

    13.2.2 Protections of accommodation spaces, service spaces,

    and control stations. All bulkheads required to be “B” class divisions shall

    extend from deck to deck and to other boundaries,

    unless continuous “B” class ceilings and/or linings are

    fitted on both sides of the bulkhead, in which case the

    bulkhead may terminate at the continuous ceiling or


linings. All doors and frames in corridor bulkhead shall be of fire-resistant materials, and its fire integrity shall be equivalent to the bulkhead where they are installed. Ventilation openings are only allowed at the lower part of the door of bed rooms, public spaces, offices and sanitary spaces. And the total net area of any such 2opening or openings shall not exceed 0.05 m. Such an

    opening shall be fitted with a grille made of fire-resistant materials. Doors in a division forming a stairway enclosure shall not be provided with such openings. All stairways shall be constructed of steel, with the exception that other equivalent materials can be used with the permission of the Certifying Survey Agency. Stairways and personnel lift trunks which penetrate more than a single deck shall be isolated by class “A” divisions and protected by self-closing doors at all their openings. Self-closing doors shall not be fitted with hold-back hooks. However, hold back arrangements incorporating remote release fittings of the fail-safe type can be utilized. Stairways which penetrate only a single deck shall be protected at least at one level by “A” or “B” class

    divisions and self-closing doors so as to limit the rapid spread of fire from one deck to another. The self-closing door shall not be fitted with hold-back hooks. Air spaces enclosed behind ceilings, panelings or linings shall be divided by close fitting draught stops spaced not more than 14 m apart. With the exception of the insulation in refrigerating compartments, the insulation materials,

    bulkheads,linings,ceilings,pipes and vent duct lagging, shall be of fire-resistant materials. Insulation of pipe fittings for cold service systems and vapour barriers and adhesives used in conjunction with insulation do not need to be fire-resistants, but they shall be limited to a minimum and their exposed surfaces shall have low flame spread characteristics. In spaces where


    penetration of oil products is possible, the surface of

    insulation shall be impervious to oil or oil vapour. The framing, including grounds and the joint pieces of

    bulkheads, linings, ceilings and draught stops shall be of

    fire-resistant materials. All exposed surfaces in corridors and stairway

    enclosures and surfaces in concealed or inaccessible

    spaces in accommodation and service spaces and

    control stations shall have low flame spread

    characteristics. Exposed surfaces of ceilings in

    accommodation and service spaces and control stations

    shall have low flame spread characteristics. Bulkhead, linings and ceilings may have combustible

    veneers provided but the thickness of such veneers shall

    not exceed 2 mm within any spaces other than corridors,

    stairway enclosures and control stations where the

    thickness shall not exceed 1.5 mm. Alternatively, 2Venners which have a calorific value below 45mJ/m

    may be permitted to be used, irrespective to the

    thickness of those venners. Paints, varnishes and other finishes used on exposed

    interior surfaces shall have the property of resulting in no

    fire hazards and of not producing excessive quantity of

    smoke. The deck coating shall be of approved material which will

    not readily ignite, or have the danger to generate toxic

    gases or explode under elevated temperatures. Ventilation duct shall be of fire-resistant materials. Short

    duct, however, not generally exceeding 2m in length and 2with a cross-sectional area not exceeding 0.02m need

    not to be fire-resistant, subject to the following


    1) These ducts shall be of a material verified by the

    Certifying Survey Agency to have low risk of fire.

    2) They may only be used at the end of the


    ventilation device.

    3) They shall not be installed within a distance less

    than 600 mm, measured along the duct, from

    where it penetrates any “A” or “B” class division

    including “B” class continuous ceilings. Where the ventilation ducts with a cross-sectional area 2exceeding 0.02 m passing through class “A” bulkheads or decks, the openings shall be lined with steel sleeve, unless the ducts passing through the bulkheads or decks are of steel in the vicinity of penetrations through the deck or bulkhead, and the ducts and sleeves at such places shall comply with the following:

    1) The ducts or sleeves shall have a thickness of at

    least 3 mm and a length of at least 900 mm. When

    passing through bulkheads, this length shall be

    divided preferably into 450 mm on each side of the

    bulkhead. These ducts or sleeves lining such ducts

    shall be provided with fire insulations. The

    insulations shall have at least the same fire

    integrity as the bulkhead or deck through which the

    duct passes. Equivalent penetration protection can

    be provided, subject to the approval of the

    Certifying Survey Agency.

    2) Ducts with a net cross-sectional area exceeding 20.075 m, except those serving hazardous areas,

    shall be fitted with fire dampers in addition to meet

    the requirements of (1) of this article. The fire

    damper shall be operated automatically but shall

    also be capable of being closed manually from

    both sides of the bulkhead or deck. The damper

    shall be provided with an indicator which shows

    whether the damper is open or closed. The

    dampers are not required, however, where ducts

    pass through spaces surrounded by “A” class

    divisions, with no function of ducts in the said

    spaces, provided those ducts have the same fire

    integrity as the divisions which they pierce. The

    dampers can be operated from one side of a

    division, subject to the approval of the Certifying


    Survey Agency. Ducts provided for the ventilation of machinery spaces of category “A”, galleys and hazardous areas shall not pass through accommodation space, service spaces or control stations. However, the ducts serving machinery spaces of category “A” and galley can pass through those spaces, if the following requirements are met:

    (1) Ducts to be made of steel, with a thickness of at

    least 3 mm, not exceeding 300 mm in width and of

    at least 5 mm for ducts of 760 mm in width and

    over. In case that the width or diameter of the duct

    is between 300 mm and 760 mm, the thickness of

    steel to be used shall be calculated by

    interpolation method.

    (2) Automatic fire dampers are to be fitted at places

    close to the boundaries penetrated; and

    (3) Places at least 5 m beyond each fire damper from

    the machinery spaces or galleys are insulated to

    “A-60” standard ; or

    (4) The ducts to be made of steel and meet the

    requirement of (1) of this article;

    (5) All ventilation ducts passing through the

    accommodation spaces, service spaces or control

    stations are insulated to “A-60” standard. All ducts for the ventilation of accommodation spaces, service spaces or control stations shall not pass through machinery spaces of category “A”, galleys or hazardous areas. However, the ducts meeting the following requirements can be permitted to pass through a machinery spaces of category “A” or galley:

    (1) The ducts where they pass through a machinery

    space of category “A” or a galley are constructed

    of steel and meet the requirement of

    (2) Automatic fire dampers are fitted close to the


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