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United States Regulations
46 CFR PART 108—DESIGN AND EQUIPMENT
Title 46: Shipping
PART 108—DESIGN AND EQUIPMENT
Authority: 43 U.S.C. 1333; 46 U.S.C. 3102, 3306; Department of Homeland Security Delegation No. 0170.1.
Source: CGD 73–251, 43 FR 56808, Dec. 4, 1978, unless otherwise noted.
§ 108.101 Incorporation by reference.
(a) Certain material is incorporated by reference into this part with the approval of the Director of the Federal Register in accordance with 5 U.S.C. 552(a). To enforce any edition other than that specified in paragraph (b) of this section, the Coast Guard must publish notice of change in the Federal Register and make the material available to the public. All approved material is on file at the U.S. Coast Guard, Office of Design and Engineering Standards (G-MSE), 2100 Second Street SW., Washington, DC 20593–0001 or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202–741–6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. All material is available from the sources indicated in paragraph (b) of this section.
(b) The material approved for incorporation by reference in this part and the sections affected are:
American Society for Testing and Materials (ASTM)
100 Barr Harbor
ASTM D 93-97, 108.500
Flash Point by
ASTM F 1014-92, 108.497
ASTM F 1121-87 108.427
International Maritime Organization (IMO)
London, SE1 7SR,
of Practice for
(MODU Code), 19
of June 1991
Resolution 108.645; 108.649.
and Fitting of
Resolution 108.646; 108.647; 108.649; 108.655.
National Fire Protection Association (NFPA)
Park, Quincy, MA
NFPA 13-1996, 108.430
Standard for the
[88–032, 56 FR 35826, July 29, 1991, as amended by CGD 95–072, 60 FR 50464, Sept. 29, 1995; CGD 84–069, 61 FR 25290, May 20, 1996; CGD 96–041, 61 FR 50730, Sept. 27, 1996; CGD 97–057, 62 FR 51046, Sept. 30, 1997; CGD 95–028, 62 FR 51208, Sept. 30, 1997; USCG 1999–5151, 64 FR 67182, Dec. 1, 1999]
§ 108.103 Equipment not required on a unit.
Each item of lifesaving and firefighting equipment carried on board the unit in addition to equipment of the type required under this subchapter, must—
(a) Be approved; or
(b) Be acceptable to the cognizant OCMI, for use on the unit.
[CGD 84–069, 61 FR 25291, May 20, 1996]
§ 108.105 Substitutes for required fittings, material, apparatus, equipment, arrangements, calculations, and tests.
(a) Where this subchapter requires a particular fitting, material, apparatus, equipment, arrangement, calculation or test, the Commandant (G-MSE) may accept any substitution that is at least as effective as that specified. If necessary, the Commandant (G-MSE) may require engineering evaluations and tests to demonstrate the equivalence of the substitution.
(b) In any case where it is shown to the satisfaction of the Commandant that the use of any particular equipment, apparatus, arrangement, or test is unreasonable or impracticable, the Commandant may permit the use of alternate equipment, apparatus, arrangement, or test to such an extent and upon such condition as will insure, to his satisfaction, a degree of safety consistent with the minimum standards set forth in this subchapter.
(c) The Commandant (G-MSE) may accept a novel lifesaving appliance or arrangement, if it provides a level of safety equivalent to the requirements of this part and the appliance or arrangement—
(1) Is evaluated and tested in accordance with IMO Resolution A.520(13), Code of Practice for the Evaluation, Testing and Acceptance of Prototype Novel Life-saving Appliances and Arrangements; or
(2) Has successfully undergone evaluation and tests that are substantially equivalent to those recommendations.
(d) During a unit's construction and when any modification to the lifesaving arrangement is done after construction, the owner must obtain acceptance of lifesaving arrangements from the Commandant (G-MSC).
(e) The OCMI may accept substitute lifesaving appliances other than those required by this part, except for—
(1) Survival craft and rescue boats; and
(2) Survival craft and rescue boat launching and embarkation appliances.
(f) Acceptance of lifesaving appliances and arrangements will remain in effect unless—
(1) The OCMI deems their condition to be unsatisfactory or unfit for the service intended; or
(2) The OCMI deems the crew's ability to use and assist others in the use of the lifesaving appliances or arrangements to be inadequate.
[CGD 73–251, 43 FR 56808, Dec. 4, 1978, as amended by CGD 95–072, 60 FR 50465, Sept. 29, 1995; CGD 84–069, 61 FR 25291, May 20, 1996]
§ 108.109 Classification society standards.
(a) Any person who desires to use the rules of a classification society, other than the American Bureau of Shipping, to meet requirements in this Subchapter must request recognition of that society from the Commanding Officer, Marine Safety Center. The relevant rules must be submitted with the request.
[CGD 73–251, 43 FR 56808, Dec. 4, 1978, as amended by CGD 95–072, 60 FR 50465, Sept. 29, 1995]
Subpart B—Construction and Arrangement
§ 108.113 Structural standards.
Except as provided in §108.109, each unit must meet the structural standards of the American Bureau of Shipping's Rules for Building and Classing Offshore Mobile Drilling Units, 1978.
§ 108.114 Appliances for watertight and weathertight integrity.
(a) Appliances to ensure watertight integrity include watertight doors, hatches, scuttles, bolted manhole covers, or other watertight closures for openings in watertight decks and bulkheads.
(b) Appliances to ensure weathertight integrity include weathertight doors and hatches, closures for air pipes, ventilators, ventilation intakes and outlets, and closures for other openings in deckhouses and superstructures.
(c) Each internal opening fixed with appliances to ensure watertight integrity which are used intermittently during operation of the unit while afloat must meet the following:
(1) Each door, hatch, and scuttle must—
(i) Be remotely controlled from a normally manned control station, and be operable locally from both sides of the bulkhead; or
(ii) If there is no means of remote control there must be an alarm system which signals whether the appliance is open or closed both locally at each appliance and in a normally manned control station.
(2) Each closing appliance must remain watertight under the design water pressure of the watertight boundary of which it is a part.
(d) Each external opening fitted with an appliance to ensure weathertight integrity must be located so that it would not be submerged below the final equilibrium waterline if the unit is subjected simultaneously to—
(1) Damage causing flooding described in §174.075 through §174.085 of this chapter; and
(2) A wind heeling moment calculated in accordance with §174.055 of this chapter using a wind velocity of 50 knots (25.8 meters per second).
[CGD 73–251, 43 FR 56808, Dec. 4, 1978, as amended by CGD 79–023, 48 FR 51008, Nov. 4, 1983]
Fire Protection: General
§ 108.123 Isolation of combustible material.
Each internal combustion engine exhaust, boiler and galley uptake, and similar heat source must be separated or insulated from combustible materials.
§ 108.127 Storage lockers for combustibles.
Each oil and paint locker must be made of steel or an equivalent material or be completely lined with steel or an equivalent material as described in §108.131(c) of this subpart.
Structural Fire Protection
§ 108.131 Definitions.
(a) Standard Fire Test means the test in which specimens of the relevant bulkheads or decks, having a surface of approximately 4.65 square meters (50 square feet) and a height of 2.44 meters (8 feet) resembling as closely as possible the intended construction and including, where appropriate, at least one joint, are exposed in a test furnace to a series of temperature relationships approximately as follows:
(1) At the end of 5 minutes—538°C. (1,000°F.)
(2) At the end of 10 minutes—704°C. (1,300°F.)
(3) At the end of 30 minutes—843°C. (1,550°F.)
(4) At the end of 60 minutes—927°C. (1,700°F.).
(b) Bulkheads and decks are defined and classed as follows:
(1) A class bulkhead or deck means a bulkhead or deck that—
(i) Is made of steel or other equivalent material; and
(ii) Prevents the passage of flame and smoke for 60 minutes if subjected to the standard fire test.
(2) A 60 bulkhead or deck means an A class bulkhead or deck that—
(i) Is insulated with approved insulation, bulkhead panels, or deck covering;
(ii) If subjected to the standard fire test for 60 minutes, has an average temperature rise on the unexposed side of the insulated bulkhead or deck of less than 139°C. (250°F.) above the temperature before the standard fire test and has a temperature rise at any point on the unexposed surface, including any joint, of less than 180°C. (325°F.) above the temperature before the standard fire test.
(3) B class bulkhead or deck means a bulkhead or deck that—
(i) Is made of approved noncombustible material;
(ii) Prevents flame from passing through it for 30 minutes if subjected to the standard fire test.
(4) C class bulkhead or deck means a bulkhead or deck made of approved noncombustible material.
(c) Equivalent material means a material that by itself or with insulation has smoke and fire retardant properties equal to that of the steel required for “A” or “B” class bulkheads or decks and has structural qualities equivalent to steel at the end of the applicable fire exposure.
(d) Approved material means a material approved under one of the following subparts of Subchapter Q of this chapter:
(1) Deck coverings, Subpart 164.006.
(2) Structural insulation, Subpart 164.007.
(3) Bulkhead panel, Subpart 164.008.
(4) Noncombustible materials, Subpart 164.009;
(5) Interior finishes, Subpart 164.012.
(e) Stairtower means a stairway that penetrates more than one deck within the same enclosure, or two or more stairways that—
(1) Are arranged vertically one above the other; or
(2) Penetrate both the deck and the overhead within the same enclosure.
(f) Accommodation space includes, sleeping, mess, hospital, recreational, toilet, washing and shower spaces, and corridors.
§ 108.133 Hull superstructure, structural bulkheads, decks, and deckhouses.
Each hull superstructure, structural bulkhead, deck, and deckhouse must be made of steel or an equivalent material.
§ 108.135 Boundary bulkheads, decks of galleys, and combustible material lockers.
Each boundary bulkhead and deck of each galley, each combination galley and messroom, and each combustible material storage locker must be an A class bulkhead and A class deck respectively.
§ 108.137 Bulkhead and deck separations of accommodation spaces.
Each boundary bulkhead and deck that separates an accommodation space or control station from the following must be an A class bulkhead and A class deck respectively—
(a) Machinery space;
(b) Galley or combination galley and messroom;
(c) Main pantry;
(d) Classified space;
(e) Store room.
§ 108.139 Boundary bulkheads and decks of a space containing emergency power.
Each boundary bulkhead and deck of a space containing an emergency electric power source or components of an emergency electric power source must be an A class bulkhead and A class deck respectively. When separate but adjoining spaces are provided for such equipment, boundary bulkhead type construction is not required for the separating partitions common to each space.
§ 108.141 Boundary bulkheads and decks between the emergency power source and service generators.
Each boundary bulkhead and deck of a space containing an emergency electric power source or components of an emergency electric power source that adjoins a space containing a ship's service generator, the components of a ship's service generator, or a classified space must be an A–60 bulkhead and A–60 deck.
§ 108.143 Accommodation space.
(a) Each corridor bulkhead in an accommodation space must be an A class or B class bulkhead except if an A class bulkhead is specifically required by this part.
(b) No door in a corridor bulkhead in an accommodation space may have a louver, except that a stateroom, lounge, or recreation room door may have louvers in its lower half.
(c) Each stairtower, elevator, and dumbwaiter, and other trunk must be enclosed by A class bulkheads.
(d) Each bulkhead not described under paragraph (a) of this section must be either A class, B class, or C class bulkheads.
(e) At least one opening to each stairway must be enclosed by either A class or B class bulkheads and doors.
(f) Each stairtower must have doors at all levels and each must be an A class door.
(g) Each door required by paragraphs (e) and (f) of this section—
(1) Must be self-closing;
(2) May not have any means to permanently hold the door open, except for magnetic holdbacks that are operated from the bridge or other remote location.
(h) Interior stairs, including stringers and treads, must be made of steel or an equivalent material.
(i) Except in washrooms and toilet spaces, each deck covering in an accommodation space must be made of an approved material, except an overlay on a deck for leveling or finishing that is not more than 9.375 millimeters ( 3/8 inch) thick.
(j) Except as provided in paragraph (1), each ceiling, lining, insulation, and pipe and duct lagging in an accommodation space must be made of an approved material that is noncombustible.
(k) Each sheathing, furring, or holding piece used to secure a bulkhead, ceiling, lining, or insulation in an accommodation space must be made of an approved material that is non-combustible.
(l) No bulkhead, lining, or ceiling in an accommodation space may have a combustible veneer greater than 2 millimeters ( 1/12 inch) in thickness.
(m) Each corridor or hidden space in an accommodation space may be covered by an approved interior finish or a reasonable number of coats of paint. However, no corridor or hidden space may have combustible veneer, trim, or decoration except material approved under Subpart 164.012 of this chapter.
§ 108.145 Hatches and tonnage openings.
Each hatch, except a hatch between storage spaces and each tonnage opening closure, must be made of steel or an equivalent material of the same class as the bulkhead or deck where the opening occurs.
§ 108.147 Certain paints prohibited.
No nitrocellulose or other highly flammable or noxious fume-producing paint or lacquer may be used on a unit.
Means of Escape
§ 108.151 Two means required.
(a) Each of the following must have at least 2 means of escape:
(1) Each accommodation space with a deck area of at least 27 sq. meters (300 sq. ft.).
(2) Each space, other than an accommodation space, that is continuously manned or used on a regular working basis except for routine security checks.
(3) Weather deck areas where personnel may be normally employed.
(b) When two means of escape are required from a space below the main deck, one the means of escape must provide for a rapid escape through openings that are not required to be watertight by damage stability considerations.
(c) When two means of escape are required from a space above the main deck, one of the means of escape must provide for a rapid escape to a weather deck.
§ 108.153 Location of means of escape.
The required two means of escape must be through exits that minimize the possibility of having both exits blocked if a fire or other casualty occurs in the area.
§ 108.155 Restrictions on means of escape utilized.
A required means of escape may not be a vertical ladder or deck scuttle, except that one of the means of escape may be a vertical ladder or deck scuttle if a stairway would be impracticable.
§ 108.157 Locked doors.
No door to the required means of escape may be designed to lock except—
(a) A crash door or a door that has a locking device that can be easily forced, if on both sides of the door a permanent and easily seen instruction is placed; or
(b) An outside door to a deckhouse if the door can be locked by key only and if the master or person in charge has control of the key to the door's lock.
§ 108.159 Stairways and exterior inclined ladders.
Each stairway, except a stairway in a machinery or storage space, and each exterior inclined ladder must be at least 70 centimeters (28 inches) wide with an angle of inclination from the horizontal of not more than 50 degrees, except that special consideration may be given to the installation if a 70 centimeters (28 inch) width is impracticable.
§ 108.160 Vertical ladders.
(a) Each vertical ladder must have rungs that are—
(1) At least 41 centimeters (16 inches) in length;
(2) Not more than 30 centimeters (12 inches) apart, uniform for the length of the ladder; and
(3) At least 18 centimeters (7 inches) from the nearest permanent object in back of the ladder.
(b) Except when unavoidable obstructions are encountered, there must be at least 11.5 centimeters (4 1/2 inches) clearance above each rung.
(c) Except as provided in §108.540(h)(3)(ii), each exterior vertical ladder more than 6 meters (20 ft.) in length must be fitted with a cage or ladder safety device meeting ANSI Standard 14.3 (1974) for fixed ladders.
(d) No vertical fixed ladders may be made of wood.
[CGD 73–251, 43 FR 56808, Dec. 4, 1978, as amended by USCG–2002–13058, 67 FR 61279, Sept. 30, 2002]
§ 108.161 Dead end corridors.
No dead end corridor may be more than 13 meters (43 feet) long.
§ 108.165 Access to lifeboats and liferafts.
Each unit must be designed to provide direct access to the lifeboat and liferaft embarkation areas.
§ 108.167 Weather deck ladders.
Each unit must have at least one permanent, inclined ladder between each weather deck.
§ 108.170 Definitions.
(a) Classified locations are those in which flammable hydrocarbon gas or vapors, resulting from the drilling operations, may be present in quantities sufficient to produce an explosive or ignitable mixture. Location of these areas affect the design of the units' machinery, electrical, and ventilation systems. (See Notes 1 and 2).
(b) For the purpose of this subpart “semi-enclosed location” means a location where natural conditions of ventilation are notably different from those on open decks due to the presence of structures such as roofs, windbreaks, or bulkheads.
Notes: 1. Further requirements with respect to hazardous locations are contained in part 111, subpart 111.105, of this chapter.
2. For specific requirements for machinery and electrical installations on mobile offshore drilling units see Subchapters “F” and “J” of this chapter.
[CGD 73–251, 43 FR 56808, Dec. 4, 1978, as amended by CGD 94–108, 61 FR 28270, June 4, 1996]
§ 108.171 Class I, Division 1 locations.
The following are Class I, Division 1 locations:
(a) An enclosed space that contains any part of the mud circulating system that has an opening into the space and is between the well and final degassing discharge.
(b) An enclosed or semi-enclosed location that is below the drill floor, and contains a possible source of gas release.
(c) An enclosed space that is on the drill floor, and is not separated by a solid, gas-light floor from the spaces specified in paragraph (b) of this section.
(d) A space that would normally be considered a Division 2 location under §108.173 but where combustible or flammable gases might accumulate.
(e) A location in the weather, or a semi-enclosed location, except as provided in paragraph (b) of this section that is within 1.5 m (5 ft.) of the boundary of any—
(1) Equipment or opening specified in paragraph (a) of this section;
(2) Ventilation outlet, access, or other opening to a Class I, Division 1 space; or
(3) Gas vent outlet.
(f) Except as provided in §108.175, an enclosed space that has an opening into a Class I, Division 1 location.
§ 108.173 Class I, Division 2 locations.
The following are Class I, Division 2 locations:
(a) An enclosed space that has any open portion of the mud circulating system from the final degassing discharge to the mud suction connection at the mud pit.
(b) A location in the weather that is—
(1) Within the boundaries of the drilling derrick up to a height of 3 m (10 ft.) above the drill floor;
(2) Below the drill floor and within a radius of 3 m (10 ft.) of a possible source of gas release; or
(3) Within 1.5 m (5 ft.) of the boundaries of any ventilation outlet, access, or other opening to a Class I, Division 2 space.
(c) A location that is—
(1) Within 1.5 m (5 ft.) of a semi-enclosed Class I, Division 1 location indicated in §108.171(b); or
(2) Within 1.5 m (5 ft.) of a Class I, Division 1 space indicated in §108.171(e).
(d) A semi-enclosed area that is below and contiguous with the drill floor to the boundaries of the derrick or to the extent of any enclosure which is liable to trap gasses.
(e) A semi-enclosed derrick to the extent of its enclosure above the drill floor or to a height of 3 m (10 ft.) above the drill floor, whichever is greater.
(f) Except as provided in §108.175 an enclosed space that has an opening into a Class I, Division 2 location.
§ 108.175 Contiguous locations.
An enclosed space that has direct access to a Division 1 or Division 2 location is the same division as that location, except—
(a) An enclosed space that has direct access to a Division 1 location is not a hazardous location if—
(1) The access has self-closing gas-tight doors that form an air lock;
(2) The ventilation causes greater pressure in the space than in the Division 1 location; and
(3) Loss of ventilation overpressure activates an alarm at a manned station;
(b) An enclosed space that has direct access to a Division 1 location can be considered as a Division 2 location if—
(1) The access has a self-closing, gas-tight door that opens into the space and that has no hold-back device;
(2) Ventilation causes the air to flow with the door open from the space into the Division 1 location; and
(3) Loss of ventilation activates an alarm at a manned control station; and
(c) An enclosed space that has direct access to a Division 2 location is not a hazardous location if—
(1) The access has a self-closing, gas-tight door that opens into the space and that has no hold-back device;
(2) Ventilation causes the air to flow with the door open from the space into the Division 2 location; and
(3) Loss of ventilation activates an alarm at a manned control station.
§ 108.177 Electrical equipment in classified locations.
Electrical equipment and devices installed in spaces made non-hazardous by the methods indicated in §108.175 must only be essential equipment.
§ 108.181 Ventilation for enclosed spaces.
(a) Each enclosed space must be vented or ventilated.
(b) There must be a means to close each vent or ventilating system.
(c) Each fan in a ventilating system must have remote controls installed in accordance with part 111, subpart 111.103, of this chapter.
(d) There must be a means to close each doorway, ventilator, and annular space around each funnel or other opening to machinery, stowage, or working spaces. The means must be located outside the space.
(e) Each intake in a ventilating system must be located so as to prevent, as far as practicable, the intake of noxious fumes.
[CGD 73–251, 43 FR 56808, Dec. 4, 1978, as amended by CGD 94–108, 61 FR 28270, June 4, 1996]
§ 108.185 Ventilation for enclosed classified locations.
(a) The ventilation system for each enclosed classified location must be designed to maintain a pressure differential between the enclosed classified location and each non-classified location adjacent to the enclosed classified location, so as to prevent the discharge of ignitable gases into the non-classified adjacent locations.
(b) Each air intake must be outside of enclosed classified locations.
(c) Each unit must have alarms that are powered independently of the ventilation motor power and control circuitry and sound at a continuously manned station when—
(1) Gas is present in an enclosed classified location; or
(2) The ventilation system for the space is not working.
(d) Each ventilation system for enclosed classified locations must provide a complete change of air every five minutes.
[CGD 73–251, 43 FR 56808, Dec. 4, 1978, as amended by CGD 94–108, 61 FR 28270, June 4, 1996]
§ 108.187 Ventilation for brush type electric motors in classified spaces.
Ventilation for brush type electric motors in classified locations must meet N.F.P.A. 496–1974 “Standard for Purged and Pressurized Enclosures for Electrical Equipment in Hazardous Locations”, except audible and visual alarms may be used if shutting down the motors may cause unsafe conditions.
§ 108.193 Restrictions.
(a) There must be no direct communication between the accommodation spaces and any chainlocker, stowage, or machinery space, except through solid, close-fitted doors or hatches.
(b) No access, vent, or sounding tube from a fuel or oil tank may open into any accommodation space, except that accesses and sounding tubes may open into corridors.
§ 108.195 Location of accommodation spaces.
(a) On surface type units, accommodation spaces must not be located forward of a vertical plane located at 5 percent of the unit's length aft of the stem, at the designed summer load line.
(b) On all units, the deckhead of each accommodation space must be above the deepest load line.
§ 108.197 Construction of accommodation spaces.
(a) Each sleeping, mess, recreational, or hospital space that is adjacent to or immediately above a stowage or machinery space, paint locker, drying room, washroom, toilet space, or other odor source must be made odorproof.
(b) Each accommodation space that is adjacent to or immediately above a galley, machinery space, machinery casing, boiler room, or other noise or heat source, must be protected from the heat and noise.
(c) Where the shell or an unsheathed weather deck forms a boundary of an accommodation space, the shell of deck must have a covering that prevents the formation of moisture.
(d) The deckheads of each accommodation space must be a light color.
(e) Each accommodation space in which water may accumulate must have a drain scupper located in the lowest part of the space, considering the average trim of the unit.
(f) Each public toilet space must be constructed and located so that its odors do not readily enter any sleeping, mess, recreational, or hospital space.
§ 108.199 Arrangement of sleeping spaces.
To the extent practicable, each occupation group must be berthed together in sleeping spaces arranged to minimize disturbance created by personnel leaving for or arriving from a working period.
§ 108.201 Size of sleeping spaces.
(a) No sleeping space may berth more than four persons, except that a sleeping space for personnel not regularly employed on a unit may berth up to six persons if the space meets §108.199 and berthing of six persons in that space is authorized by the Commandant (G-MSO).
(b) Without deducting any equipment used by the occupants, each sleeping space must have for each occupant—
(1) 2.8 square meters (approximately 30 square feet) of deck area; and
(2) 6 cubic meters (approximately 210 cubic feet) of volume.
(c) Each sleeping space must have at least 191 centimeters (approximately 6 feet 3 inches) of headroom over clear deck areas.
[CGD 73–251, 43 FR 56808, Dec. 4, 1978, as amended by CGD 82–063b, 48 FR 4781, Feb. 3, 1983; CGD 95–072, 60 FR 50465, Sept. 29, 1995; CGD 96–041, 61 FR 50730, Sept. 27, 1996]
§ 108.203 Berths and lockers.
(a) Each sleeping space must have a separate berth for each occupant.
(b) No more than one berth may be placed over another.
(c) Each berth must have a framework of hard, smooth material that is not likely to corrode or harbor vermin.
(d) Each berth must be arranged to provide ample room for easy occupancy.
(e) Each berth must be at least 76 centimeters (approximately 30 inches) wide by 193 centimeters (approximately 76 inches) long.
(f) Adjacent berths must be separated by a partition that extends at least 46 centimeters (approximately 18 inches) above the sleeping surface.
(g) The bottom of a lower berth must be at least 30 centimeters (approximately 12 inches) above the deck.
(h) The bottom of an upper berth must be at least 76 centimeters (approximately 2 feet 6 inches) from the bottom of the berth below it and from the deck or any pipe, ventilating duct, or other overhead installation.
(i) Each berth must have a berth light.
(j) Each occupant of a sleeping space must have a readily accessible locker of hard, smooth material.
(k) Each locker must be at least .194 square meters (approximately 300 square inches) in cross section and 1.53 meters (approximately 60 inches) high.
§ 108.205 Wash spaces; toilet spaces; and shower spaces.
(a) For the purposes of this section—
(1) “Private facility” means a toilet, washing, or shower space that is accessible only from one single or double occupancy sleeping space;
(2) “Semi-private facility” means a toilet, washing or shower space that is accessible from either of two one-to-four person occupancy sleeping spaces; and
(3) “Public facility” means a toilet, washing, or shower space that is not private or semi-private.
(b) Each private facility must have one toilet, one shower, and one washbasin, all of which may be in a single space.
(c) Each semi-private facility must have at least one toilet and one shower, which may be in a single space.
(d) Each room adjoining a semi-private facility must have a washbasin if a washbasin is not installed in a semi-private facility.
(e) Each unit must have enough public facilities to provide at least one toilet, one shower, and one washbasin for each eight persons who occupy sleeping spaces that do not have private or semi-private facilities.
(f) Urinals may be installed in toilet rooms, but no toilet required in this section may be replaced by a urinal.
(g) Each public toilet space and washing space must be convenient to the sleeping space that it serves.
(h) No public facility may open into any sleeping space.
(i) Each washbasin, shower, and bathtub must have hot and cold running water.
(j) Adjacent toilets must be separated by a partition that is open at the top and bottom for ventilation and cleaning.
(k) Public toilet facilities and shower facilities must be separated.
(l) Each public facility that is a toilet space must have at least one washbasin unless the only access to the toilet space is through a washing space.
(m) Each toilet must have an open front seat.
(n) Each washing space and toilet space must be so constructed and arranged that it can be kept in a clean and sanitary condition and the plumbing and mechanical appliances kept in good working order.
(o) Washbasins may be located in sleeping spaces.
§ 108.207 Messrooms.
(a) Each messroom that is not adjacent to the galley that serves it must be equipped with a steamtable.
(b) Each messroom must seat the number of persons expected to eat in the messroom at one time.
§ 108.209 Hospital spaces.
(a) Each unit carrying twelve or more persons on a voyage of more than three days must have a hospital space.
(b) Each hospital space must be suitably separated from other spaces.
(c) No hospital space may be used for any other purpose, when used for care of the sick.
(d) An entrance to each hospital space must be wide enough and arranged to readily admit a person on a stretcher.
(e) Each berth in a hospital space must be made of metal.
(f) Each upper berth must be hinged and arranged so that it can be secured clear of the lower berth.
(g) Each hospital space must have at least one berth that is accessible from both sides.
(h) Each hospital space must have one berth for every 12 persons or portion thereof on board, who are not berthed in single occupancy rooms, but the number of berths need not exceed six.
(i) Each hospital space must have a toilet, washbasin, and bathtub or shower accessible from the hospital space.
(j) Each hospital space must have clothes lockers, a table, and seats.
§ 108.210 Hospital space not required.
(a) The hospital space required under §108.209 is not required on a unit if one single or double occupancy sleeping space, designated and equipped as a treatment or isolation room or both is available for immediate medical use, and has—
(1) An entrance that is wide enough and arranged to readily admit a person on a stretcher;
(2) A single berth or examination table that is accessible from both sides; and
(3) A washbasin in or immediately adjacent to it.
§ 108.211 Miscellaneous accommodation spaces.
(a) Each unit must have enough facilities for personnel to wash their own clothes, including at least one tub or sink that has hot and cold running water.
(b) Each unit must have enough equipment or space for the personnel to dry their own clothes.
(c) Each unit must have an accommodation space that can be used for recreation.
§ 108.213 Heating requirements.
(a) Each accommodation space must be heated by a heating system that can maintain at least 20°C. (68°F.).
(b) Radiators and other heating apparatuses must be constructed, located or shielded so as to avoid risk of—
(2) Danger; and
to the occupants of each accommodation space.
(c) Each exposed pipe in an accommodation space, leading to a radiator or other heating apparatus must be insulated.
§ 108.215 Insect screens.
(a) Accommodation spaces must be protected against the admission of insects.
(b) Insect screens must be installed when natural ventilation is provided.
§ 108.217 Guardrails and bulwarks.
(a) Each unit must have guardrails or bulwarks along the edge of the bridge, of each deck, and of each deck opening.
(b) Each guardrail and bulwark must extend at least one meter (39.37 inches) above the deck except where this height may interfere with the normal operation of the unit, a lesser height may be approved.
(c) Removable guardrails may be installed where operating conditions warrant their use.
§ 108.219 Guardrails.
(a) Except for exposed peripheries of a freeboard or superstructure deck, each guardrail must have at least two evenly spaced courses.
(b) At exposed peripheries of a freeboard or superstructure deck, each guardrail must have at least three courses not more than 38 centimeters (15 in.) apart with the lowest course not more than 23 centimeters (9 in.) above the deck.
(c) For a rounded gunwale, the guardrail must be at the edge of the flat of the deck.
§ 108.221 Storm rails.
Each unit must have a storm rail in the following locations:
(a) On each deckhouse side that is normally accessible.
(b) On each side of each passageway that is wider than 1.83 meters (6 feet).
(c) On at least one side of each passageway that is less than 1.83 meters (6 feet) wide.
§ 108.223 Guards on exposed equipment.
Each unit must have hand covers, guards, or rails installed on all belts, gears, shafts, pulleys, sprockets, spindles, flywheels or other reciprocating, rotating or moving parts of machinery or equipment normally exposed to contact by personnel.
§ 108.231 Application.
Sections 108.231 through 108.241 apply to each unit with a helicopter landing facility.
§ 108.233 Location and size.
(a) Each helicopter deck must be—
(1) At least the size of the rotor diameter of the largest single main rotor helicopter that will be used on the facility; or
(2) If tandem main rotor helicopters use the facility, at least of a size to provide a longitudinal axis of 9/10 the overall length of the helicopter, and a width of 3/4 of the overall length of the helicopter.
Note: For the purpose of paragraph (a)(2) the overall length is measured across both main rotors in the fore and aft line.
(b) Each helicopter deck must be located so as to provide clear approach/departure paths to enable the largest helicopter using the facility to operate in all weather conditions which allow helicopter operations.
§ 108.235 Construction.
(a) Each helicopter deck must be designed to accommodate the loadings (static and dynamic) imposed by operation and stowage of helicopters intended to use the facility as well as environmental loadings (wind, wave, water, snow, etc.) anticipated for the unit.
(b) The adequacy of each helicopter deck for the loadings required in paragraph (a) of this section must be shown by design calculations. Where the placement of a load affects the suitability of a structural member, the load must be evaluated in the most unfavorable position for each member.
(c) The analysis required in paragraph (b) of this section must be based on the dead load of the structure, existing stresses in the deck when it is an integral part of a unit's structure, and each of the following loading conditions:
(1) Uniform distributed loading. A loading of 2kg/m 2 (42 lb/ft 2 ) applied to the helicopter deck area.
(2) Helicopter landing impact loading. The limit load established by the limit drop test in 14 CFR 29.725, or a load of not less than 75 percent of the helicopter maximum weight taken on a square area of 0.3×0.3 m (1 ft.×1 ft.) under each main landing gear unit applied anywhere on the helicopter deck area.
(3) Stowed helicopter loading. The helicopter maximum weight plus inertial forces from the helicopter due to anticipated unit motions, and applicable environmental loadings including wind loads.
(d) The landing area of each helicopter facility must—
(1) Have a non-skid surface;
(2) Have drainage facilities that prevent the collection of liquids and prevent liquids from spreading to or falling on other parts of the unit;
(3) Have recessed tie-down points; and
(4) Be free of projections, except that landing lights or other projections may be installed around the periphery of the landing deck provided they do not interfere with landing and take-off operations.
(e) The unprotected perimeter of each helicopter facility must have a safety net at least 1.5 meters (4.92 ft.) wide. The outer edge of the net must not extend more than 15 centimeters (6 in.) above the surface of the deck.
(f) Each helicopter facility must have both a main and an emergency access/egress route located as far apart from each other as practicable.
§ 108.237 Fuel storage facilities.
(a) Helicopter fuel storage tanks must be installed as far as practicable from—
(1) The landing area; and
(2) Each source of vapor ignition.
(b) Independent tanks must meet Subpart 58.50 of this Chapter.
(c) Marine portable fuel stowage tanks must meet Part 64 of this chapter.
(d) Each marine portable fuel stowage tank must have a means to contain fuel spills or leaks.
[CGD 73–251, 43 FR 56808, Dec. 4, 1978, as amended by USCG–1999–6216, 64 FR 53226, Oct. 1, 1999]
§ 108.239 Fuel transfer equipment.
(a) Each nozzle must be a “deadman” type.
(b) Each hose must have a storage reel.
(c) Each hose must have a static grounding device.
(d) Each electric fuel transfer pump must have a control with a fuel transfer pump operation indicator light at the pump.
(e) There must be a fuel pump shut off at each of the access routes required by §108.235(f).
(f) Each fuel transfer pump and each hose reel must have a means to contain fuel spills or leaks.
(g) Each hose must meet chapter 3 “Aircraft Fueling Hose” of National Fire Protection Association Standard for Aircraft Fuel Servicing (N.F.P.A. No. 407–1975).
§ 108.241 Visual aids.
(a) Each helicopter deck must—
(1) Have a wind direction indicator located in an unobstructed area readily visible to helicopter pilots approaching the deck;
(2) Be fitted around the perimeter with yellow and blue lights in alternate order, not more than 3 meters (10 ft.) apart; and
(3) Be marked with—
(i) The unit's identification;
(ii) A continuous line 40 centimeters (16 in.) wide on the perimeter; and
(iii) Aiming circles as may be appropriate considering deck configuration, helicopter type, and operational requirements.
(b) All markings must be in a contrasting color to the surface of the deck.
§ 108.301 Stability.
Each unit must meet the requirements in Subchapter S of this chapter that apply to Mobile Offshore Drilling Units.
[CGD 79–023, 48 FR 51008, Nov. 4, 1983]
Subpart D—Fire Extinguishing Systems
§ 108.401 Fire main system.
Each unit must have a fire main system.
§ 108.403 Fire extinguishing systems: General.
(a) Each of the following on a unit must have an approved fixed gaseous type extinguishing system:
(1) Each paint locker, oil room, and similar space.
(2) Each enclosed space containing internal combustion or gas turbine main propulsion machinery.
(3) Each enclosed space containing internal combustion machinery with an aggregate power of at least 1000 B.H.P.
(4) Each enclosed space containing a fuel oil unit, including purifiers, valves, or manifolds for main propulsion machinery or internal combustion machinery with an aggregate power of at least 1000 B.H.P.
(5) Each enclosed ventilation system for electric motors or generators used for vital services including bilge pumps, fire pumps, or propulsion.
(b) Each space containing an oil fired boiler, the fuel oil unit or valves for the boiler, or manifolds in the line between the fuel settling tanks and the boiler on a unit must have a fixed gas type, foam, or other approved fire extinguishing system.
[CGD 73–251, 43 FR 56808, Dec. 4, 1978, as amended by CGD 95–027, 61 FR 26008, May 23, 1996]
§ 108.403a Fire extinguishing systems: Non-vital services.
Each enclosed ventilating system for electric motors or generators not used for vital services must have an access into the system for firefighting or be protected by a fixed fire protection system.
§ 108.404 Selection of fire detection system.
(a) If a fire detector is in a space, it must provide effective detection of fires most likely to occur in the space.
(b) The fire detection system must be designed to minimize false alarms.
§ 108.405 Fire detection system.
(a) Each fire detection system and each smoke detection system on a unit must—
(1) Be approved by the Commandant; and
(2) Have a visual alarm and an audible alarm in the pilothouse or at a normally manned control station for the system.
(b) Each fire detection system must be divided into zones to limit the area covered by any particular alarm signal.
(c) Each visual alarm must—
(1) Have a chart or diagram next to the alarm that shows the location of the zones in the system and that contains the instructions for operating, and testing the system;
(2) When activated show the zone in the system where fire has been detected; and
(3) Be in a noticeable location in the pilothouse or control station.
§ 108.407 Detectors for electric fire detection system.
(a) Each detector in an electric fire detection system must be located where—
(1) No portion of the overhead of a space protected is more than 3 meters (10 feet) from a detector;
(2) Beams and girders extending below the ceiling of the space protected and any other obstructions do not detract from the effectiveness of the detector; and
(3) Damage to the detector is unlikely to occur if it is not protected.
(b) Each detector must be set to activate at not less than 57° C (135° F) and at not more than 73° C (165° F), except that if a space normally has a high ambient temperature each detector may be set to activate at not less than 80° C (175° F) and not more than 107° C (225° F).
§ 108.409 Location and spacing of tubing in pneumatic fire detection system.
(a) All tubing in a pneumatic fire detection system must be on the overhead or within 300 millimeters (12 inches) of the overhead on a bulkhead in a location where—
(1) No portion of the overhead is more than 3.6 meters (12 feet) from the nearest point of tubing;
(2) Beams or girders extending below the ceiling or other obstructions do not detract from the effectiveness of the tubing; and
(3) Damage to the tubing, is unlikely to occur if it is not protected.
(b) If tubing in a tubing circuit is installed in an enclosed space, at least 5% of the tubing in the circuit must be exposed in the space, except that at least 7.6 meters (25 feet) of tubing must always be exposed in the space.
(c) A pneumatic fire detection system must be set to activate after approximately a 22°C. (40°F.) per minute increase in temperature at the center of the circuit in the system.
§ 108.411 Smoke detection system.
Each smoke accumulator in a smoke detection system must be located on the overhead of the compartment protected by the system in a location—
(a) Where no portion of the overhead of the compartment is more than 12 meters (40 feet) from an accumulator;
(b) That is no closer to the opening of a ventilator than 3 times the diameter or equivalent size of the opening.
(c) Where damage to the accumulator is unlikely to occur if it is not protected.
§ 108.413 Fusible element fire detection system.
(a) A fusible element fire detection system may be installed.
(b) The arrangements for the system must be acceptable to the Commandant.
Fire Main System
§ 108.415 Fire pump: General.
A fire main system must have at least two independently driven fire pumps that can each deliver water at a continuous pitot tube pressure of at least 3.5 kilograms per square centimeter (approximately 50 pounds per square inch) at least two fire hose nozzles that are connected to the highest two fire hydrants on the unit. Alternative designs that meet the pressure requirement of this paragraph will be considered for column stabilized and self elevating units.
§ 108.417 Fire pump components and associated equipment.
(a) Each fire pump in a fire main system must have a relief valve on its discharge side that is set to relieve at 1.75 kilograms per square centimeter (approximately 25 pounds per square inch) in excess of the pump discharge pressure necessary to meet the pressure required in §108.415 for the pump or 8.6 kilograms per square centimeters (approximately 125 pounds per square inch), whichever is greater. A relief valve may be omitted if the pump operating under shut off condition is not capable of developing the pressure described in §108.415 plus 1.75 kilograms per square centimeter (25 pounds per square inch).
(b) Each fire pump in a fire main system must have a pressure gauge on its discharge side.
(c) Fire pumps may be used for other purposes. One of the required pumps must be kept available for use on the fire system at all times. If a fire pump is used in a system other than the fire main system, except for branch lines connected to the fire main for deck washing, each pipe connecting the other system must be connected to the pump discharge through a shut off valve at a manifold near the pump. If the fire pump exceeds the pressure in §108.417(a), the pipe leading from the discharge manifold to other portions of the fire main system must have a reducing station and a pressure gauge in addition to the pressure gauge required by paragraph (b) of this section.
(d) If a fire pump has a reducing station, the relief valve required by paragraph (a) of this section for the pump and the additional pressure gauge required in paragraph (c) of this section must not be located on the discharge side of the reducing station.
(e) An oil line must not be connected to a fire pump.
[CGD 73–251, 43 FR 56808, Dec. 4, 1978, as amended by CGD 95–028, 62 FR 51208, Sept. 30, 1997]
§ 108.419 Fire main capacity.
The diameter of the fire main must be sufficient for the effective distribution of the maximum required discharge from two fire pumps operating simultaneously.
§ 108.421 Location of fire pumps and associated equipment.
Each fire pump required by §108.415, and the source of power, controls, sea connections for the fire pump, and booster pumps, if installed, must be installed in locations where, if a fire occurs in an enclosed space, all of the fire pumps on the unit are not made inoperative, except that if compliance with this requirement is impracticable, a gas type extinguishing system may be installed to protect at least one of the fire pumps, its source of power, and controls. (continued)