ABS RULES FOR BUILDING AND CLASSING MOBILE OFFSHORE DRILLING UNITS AND

To view this page ensure that Adobe Flash Player version 9.0.124 or greater is installed.

Please login or register to make a comment!

U. S. SUPPLEMENT TO ABS RULES FOR BUILDING AND CLASSING MOBILE OFFSHORE DRILLING UNITS AND THE 1989 IMO MODU CODE FOR UNITS PARTICIPATING IN THE UNITED STATES COAST GUARD ALTERNATE COMPLIANCE PROGRAM 1 NOVEMBER 1998 REVISION 0 AMERICAN BUREAU OF SHIPPING M I S S I O N S T A T E M E N T The mission of the American Bureau of Shipping is to serve the public interest as well as the needs of our clients by promoting the security of life, property and the natural environment, primarily through the development and verification of standards for the design, construction and operational performance of marine- related structures.

Q U A L I T Y P O L I C Y It is the policy of the American Bureau of Shipping to provide quality services in support of our mission and to be responsive to the individual and collective needs of our clients as well as those of the public at large. All of our client commitments, supporting actions and services delivered must be recognized as expressions of quality. We pledge to monitor our performance as an on-going activity and to strive for continuous improvement.

CONTENTS AMERICAN BUREAU OF SHIPPING MISSION ... more. less.

STATEMENT AND QUALITY POLICY INTRODUCTION SECTIONS I.USCG SUPPLEMENTAL REQUIREMENTS TO ABS RULES AND 1989 IMO MODU CODE II.USCG REQUIREMENTS NOT ADDRESSED BY ABS RULES OR 1989 IMO MODU CODE III. ACP SUPPLEMENT INITIAL 1989 IMO MODU CODE SURVEY CHECK SHEET IV.RECORD OF REVISIONS U. S. SupplementIntroduction 1 November 1998Introduction - 1Revision 0 INTRODUCTION Those who use this Supplement are asked to review the current American Bureau of Shipping (ABS) Rules for Building and Classing Mobile Offshore Drilling Units (hereinafter ABS MODU Rules). Please be aware of the "Scope and Conditions of Classification." This Supplement does not change the scope or conditions of ABS Classification. It is a reference document within the ABS Quality System. The Check Sheets contained in this Supplement are also for reference only and are not to be used in the performance of a Survey. The controlled Check Sheets are available through the normal distribution of controlled documents. The most recent revisions may be obtained from the ABS Surveyor-in-Charge. As part of their regulatory reform initiative, the United States Coast Guard (USCG) established a task group consisting of USCG personnel and ABS Engineers to conduct a comparison of the applicable requirements contained within Title 46 of the United States (U.S.) Code of Federal Regulations (CFR) Subchapters "I-A", cF d and cG d to the similar applicable regulations contained in the International Maritime Organization (IMO) Code for the Construction and Equipment of Mobile Offshore Drilling Units (MODU), 1989 (hereinafter IMO MODU Code). The purpose of this effort was to identify redundancies and to determine if the IMO MODU Code would provide an equivalent level of safety to those regulations contained within 46 CFR Subchapters "I-A", cF d and cG d. The CFR regulations were examined, and it was determined that many of the CFR requirements were satisfied by either the ABS MODU Rules alone, the IMO MODU Code alone, or a combination of these regulations. The results of the task group's study is codified into this document titled "U.S. Supplement to ABS Rules for Building and Classing Mobile Offshore Drilling Units and 1989 IMO MODU Code." This Supplement identifies those USCG requirements that are in addition to the ABS Rules and the IMO MODU Code. This publication is intended to be used in lieu of 46 CFR Subchapters "I-A", cF d and cG d for plan review and inspections delegated to ABS by the USCG. The use of the U.S. Supplement is restricted to those MODUs that participate in the USCG's Alternate Compliance Program (ACP) with ABS. The procedures for enrollment in the ACP are addressed on Page 3 of this Introduction. The Supplement is divided into four sections: Section I contains supplemental requirements in areas where there exist ABS Rules or 1989 IMO MODU Code requirements for which the USCG has amplifying or additional requirements. For ease of reference, each of these cites is identified by the corresponding ABS Rule cite and IMO Code cite. If an ABS Rule cite or IMO Code cite is not applicable to the vessel under consideration, then the associated interpretation does not apply. Section II contains supplemental requirements in areas not contained in the ABS Rules or 1989 IMO MODU Code for which the USCG has requirements. Section III contains the ACP supplement survey check sheets. Section IV contains the record of revisions commencing after 1 November 1998. There are specific cites within this document where U.S. domestic standards are specified as mandatory for certain systems, equipment or components. U.S. Federal law is one of the reasons why many items are mandatory. It is recognized that there exist alternative standards developed by regulatory bodies and industry, both internal and external to the United States, which would define systems, equipment or components that are equivalent to those being specified herein. To the extent authorized by the most recent revision of USCG Navigation and Vessel Inspection Circular No. 2-95, Change 1, as amended and supplemented, ABS is empowered to accept alternatives built to these international/industry standards and grant the requested equivalency. In the normal course of technological advancement and application, it is entirely possible that new systems, equipment or components will be available for use onboard vessels covered by this program. In the event that existing design requirements are not applicable, it is incumbent on the owner, builder or designer to seek from ABS, as early as possible, a determination of the requirements which will be applied in such cases. U. S. SupplementIntroduction 1 November 1998Introduction - 2Revision 0 This document is the result of several years of review by ABS and the USCG. As noted above, the vision was to find common ground in their mutual missions of the protection of life and property at sea. Under ACP, a voluntary program, the owner may elect to have ABS conduct surveys on existing vessels on behalf of the USCG. For new construction, a request is required from both the shipyard and the owner since enrollment in this program will influence both parties. A MODU enrolled in the Alternate Compliance Program must satisfy all the requirements contained in the applicable sections of the ABS MODU Rules, the 1989 IMO MODU Code and this U.S. Supplement, prior to the issuance of an USCG Certificate of Inspection (COI). U. S. SupplementIntroduction 1 November 1998Introduction - 3Revision 0 PROCEDURES FOR ENROLLMENT AND PARTICIPATION IN ACP The process for enrollment in ACP is defined in the USCG Marine Safety Manual, Volume II Chapter 32. NEW CONSTRUCTION For new construction, since the design, fabrication sequences, and construction cost may be affected by the intended enrollment of a proposed new construction in ACP by the owner, it is imperative that the shipyard and owner consult with ABS as early in the design phase as possible. It is prudent to discuss the proposed enrollment in depth as soon as possible to establish the basic fundamentals and administrative clarifications. Upon the completion of such a meeting, both the shipyard and the owner are to forward a written request to the Office In Charge of Marine Inspection (OCMI) to confirm their intentions. For the shipyard, a copy should be forwarded with the ABS Request for Classification Survey Details (Form A.B.122). For survey purposes, the owner is to forward a separate letter to the local ABS Office or Regional Office (Survey Manager) to confirm their intention regarding the enrollment of the vessel. While this will assist in the proper processing within ABS, it is very important to note that the application for enrollment in ACP is to be forwarded to the OCMI in accordance with NVIC 2-95, Change-1. EXISTING VESSELS With existing MODUs, the owner or operator applies for enrollment by submitting an Application for Inspection of U.S. Vessel (Form CG-3752) to the OCMI, indicating their desire to have their vessel participate in the program. The USCG will subsequently authorize the ABS Program Manager and the local ABS Survey Office to commence the ACP enrollment process. A "Hand Over Survey," discussed later in this text, will be scheduled at a mutually-convenient time. Upon completion of the Survey, the owner/operator will receive official notification from the USCG indicating the enrollment status. RE-FLAGGING For MODUs intending to re-flag to U.S. Flag, it is envisioned that this document will apply in a manner similar to other existing vessels. All re-flaggings require an initial meeting between the owner and USCG headquarters. HOW TO WITHDRAW In order to withdraw from ACP, the owner is to advise the USCG in writing. If this is agreeable to the USCG, all data applicable to the MODU during the time period the vessel was enrolled in the program will be forwarded to the USCG for incorporation into the USCG computer files. Upon accomplishment of the information transfer, the owner would then continue the required inspections directly under the jurisdiction of the USCG. HAND OVER SURVEY For existing MODUs, a "Hand Over Survey" must take place. The Survey is simply a time for the attending USCG and ABS staff to compare notes. The USCG will confirm that the history of the vessel has been properly entered into the ABS Status System. The USCG will also confirm to the ABS Surveyors that the vessel is in compliance with all CFRs or will advise on those areas that must be corrected. The ABS Surveyors and USCG Inspectors will agree on the resolution of any outstanding requirements and deficiencies. The Surveyor and the Inspector will then complete the ABS Record of Safety Equipment. The Record of Safety Equipment is to be a permanent part of the vessel 9s documents. WHAT HAPPENS WITH THE CERTIFICATE OF INSPECTION? An ACP MODU will still have a Certificate of Inspection on board. However, it will be distinctively different in that it will not contain details of life-saving appliances and fire-extinguishing equipment. The ABS Status will contain the major details of the vessel. WHAT HAPPENS IF THE MODU IS DAMAGED? It is the responsibility of the MODU 9s Offshore Installation Manager (OIM) to report Marine Damages, as defined in 46 CFR 4.03 to the cognizant USCG OCMI. ABS takes the lead in determining "Fitness to Proceed" and is obliged to share this information with the local OCMI. If the MODU poses a pollution threat to the environment, such as a Class I structural failure, the local OCMI will take precedence. This decision must be coordinated with the Surveyor in Charge. U. S. SupplementIntroduction 1 November 1998Introduction - 4Revision 0 REPORTABLE CASUALTY A reportable marine casualty or accident means a casualty or accident involving any MODU within the navigable waters of the U.S., its territories or possessions, or any casualty or accident involving a U.S. Registered MODU anywhere in the world. This definition of marine casualty or accident does not pertain to public vessels. The definition is contained in 46 CFR 4.05-1 as follows: NOTICE OF MARINE CASUALTY Immediately after addressing all resultant safety concerns, the owner, agent, master, operator, or person in charge, shall notify the nearest Marine Safety Office or USCG Group Office whenever a vessel is involved in a marine casualty consisting of: 1.An unintended grounding, or an unintended strike of (collision with) a bridge; 2.An intended grounding, or an intended strike of a bridge, that creates a hazard to navigation, the environment, or the safety of a vessel, or that meets any criterion of paragraphs 3 through 7; 3.A loss of main propulsion, primary steering, or any associated component or control that reduces the maneuverability of the vessel; 4.An occurrence materially and adversely affecting the vessel 9s seaworthiness or fitness for service or route, including but not limited to fire, flooding, or failure of or damage to fixed fire-extinguishing systems, life-saving appliances, auxiliary power generating equipment, or bilge pumping systems; 5.A loss of life; 6.An injury that requires professional medical treatment (treatment beyond first aid) and, if the person is engaged or employed on board a vessel in commercial service, that renders the individual unfit to perform his or her routine duties; or 7.An occurrence causing property damage in excess of $25,000 including the cost of labor and materials to restore the property to its condition before the occurrence, but not including the cost of salvage, cleaning, gas-freeing, drydocking, or demurrage. HOW TO HANDLE THE FORM CG-835 The USCG issues their recommendations and deficiencies on a form numbered CG-835. It has become common usage to simply refer to the USCG outstandings and deficiencies as "835s". The local USCG offices will assist the ABS Surveyors by providing liaison with other USCG offices in dealing with CG-835s. The ABS Surveyor is not expected to communicate directly with a USCG office other than the one in his local area. The 835 is under the control of the USCG office that did the inspection and wrote the requirements. ABS will be given copies of the 835s for inclusion on the ABS Status as an Outstanding Recommendation. ABS may survey and indicate that an 835 has been satisfactorily completed. This will be done by the writing of a miscellaneous report that receives normal distribution plus one additional copy for the USCG office that wrote the 835. It is the responsibility of the local OCMI to forward the 835 to the appropriate persons to cancel the 835 in the USCG files. ABS Surveyors may "clear" 835 items, on ACP vessels only. This may be done on other U.S. Registered Modus; however, it requires prior approval from the OCMI that issued the 835. In those situations where compliance with an 835 has not been satisfied, the USCG office that issued the 835 must be contacted for further advice. This will be done through the OCMI at the port where the vessel is being surveyed. It is important to note that the ABS Surveyor does not have the right to extend or modify the 835 . NO SAIL ITEMS cNo Sail d items is a term normally applied by the USCG when the condition of a MODU is suspect or has deteriorated or has sustained excessive damages resulting in non-compliance or a deficiency with respect to the applicable regulations. ABS has the same processes, however, the ABS terminology differs. ABS defines cno sail d items in various sections of the ABS Process Instructions. ABS does not use the term "Seaworthy." The term used in ABS is "Fitness to Proceed." A MODU is not considered Fit to Proceed if it has suffered structural damage that affects the strength of the MODU or its watertight integrity. It also applies if the MODU has lost position holding ability, leg damage, propulsion, steering or electrical generation capacity, including redundant systems. Any of the foregoing would generate a report of non-compliance with the Rules and be listed as an "Outstanding Recommendation". Conversely, if the problem lies with IMO items, it would be listed as a "Deficiency." Deficiencies that would prevent a MODU from sailing or operating would be: (1) Loss of life-saving appliances such as lifeboats; (2) Lack of life-saving U. S. SupplementIntroduction 1 November 1998Introduction - 5Revision 0 appliances; (3) Failure of critical parts of the fire-extinguishing system. Examples of "No Sail" items are inoperable fire pumps or depleted fixed fire-extinguishing systems. On occasion an item that is a deficiency will also be an outstanding recommendation against Class. The emergency fire pump is such an item. The emergency fire pump is required both for Class and for the Safety Equipment Certificate to be issued and/or remain valid. OUTSTANDING RECOMMENDATION (OSR) This is the term used by ABS to define areas of noncompliance with the Rules. Classification is maintained by a series of Annual Surveys and Periodical Surveys that allow the Class Society an opportunity to survey a MODU and maintain a record of its compliance with the Rules. It also allows ABS to confirm that the owner is maintaining the MODU in a satisfactory condition. A single Outstanding may not necessarily affect the Class of the MODU. Consideration is given to allow time to make corrections, to move the MODU to a more appropriate location or to complete operations. A number of Outstanding Recommendations or a major Outstanding Recommendation may be sufficient to question the "fitness of the MODU to proceed or operate." WHAT HAPPENS IF ANNUAL OR SPECIAL SURVEYS MUST BE EXTENDED? ACP survey extensions must be processed through the Survey Manager Offshore, ABS Americas. The maximum survey extension will be three months and shall not alter the baseline date for the survey concerned. Except for the Special Surveys, all other surveys have grace periods (limited period of time) in which they are to be completed. A series of letters are sent to the owner advising of due dates and overdue dates. Provided there are no special circumstances to consider, the Class of the MODU is in jeopardy and will be canceled 90 days after the due date. DRYDOCKING EXTENSIONS Regardless of the circumstances, the USCG retains the ultimate authority for granting drydocking extensions to ACP MODUs . Under extenuating circumstances, ABS allows extensions of drydockings. The MODU must have no record of leg damage, or grounding since the last drydocking, and a Survey must be conducted. For a 30 day extension, a general examination of the MODU is conducted. For extensions of 31 days up to 90 days, a modified Under Water Survey In Lieu of Drydocking (UWILD) is required. In the modified survey a record of the examination is typically marked on photographs taken by a diver. Extensions of 91 days up to one year are normally done to allow the MODU 9s surveys to be harmonized with IMO requirements. A one year extension requires a full Under Water Survey in Lieu of Drydocking, including two-way voice and video communications between the Surveyor and the diver. It would be considered unusual to do a one year extension under any other circumstances. UNDER WATER SURVEY IN LIEU OF DRYDOCKING An ACP UWILD guide was developed for vessels enrolled in ACP. The Guide for Underwater Surveys In Lieu of Drydocking for Vessels Enrolled in the ABS Based USCG Alternate Compliance Program is now included in NVIC 2- 95, Change 1. OVERSIGHT The USCG, in delegating surveys to ABS, still retains the ultimate responsibility that MODUs meet regulatory requirements. Crucial to fulfilling this responsibility is active and viable oversight by the USCG of surveys conducted by ABS on behalf of the USCG. The foundation of this oversight is ABS 9s World Wide ISO 9001 Certified Quality System. As with any successful quality system, it is a smoothly functioning in-service process verification scheme. It provides a source of continuous and timely opinion related to the effectiveness of the processes in place to meet customer requirements. An added benefit is the information it provides to both clients and management to prove that controlled work is being accomplished. In this respect it is very important in facilitating the delegation of USCG vessel inspection to ABS. It provides a framework that will be used in the USCG oversight program for delegated responsibilities. Oversight will consist of internal and external audits of ABS by the USCG. It will also consist of annual boardings of the MODUs to conduct renewal and mid-period COI inspections. The boardings will be similar to those done in Port State Inspections. A check sheet describing the considerations to expand the boardings is a part of the USCG Marine Safety Manual, Chapter 32. U. S. SupplementSection I 1 November 1998Revision 0 I-i I. USCG SUPPLEMENTAL REQUIREMENTS TO ABS RULES AND 1989 IMO MODU CODE Cite:33CFR 67.05Obstruction LightsI-1 Cite:33CFR 164.35Sounding EquipmentI-1 Cite:46CFR 54 Air Receivers, Bulk Tanks, Tensioner Bottles and other Pressure VesselsI-1 Cite:46CFR 108.103Equipment Not Required on a Unit ( Excess Equipment )I-1 Cite:46CFR 108.131Definitions (as applicable to Accommodation Spaces)I-1 Cite:46CFR 108.137Structural Fire ProtectionI-1 Cite:46CFR 108.143Accommodation SpaceI-1 Cite:46CFR 108.147Prohibited Paint in Accommodation SpaceI-1 Cite:46CFR 108.170-Classified Locations and Electrical Installations in Classified LocationsI-1 46CFR 108.177 Cite:46CFR 108.185Ventilation for Enclosed Classified LocationsI-2 Cite:46CFR 108.187Ventilation for Brush Type Electric Motors in Classified SpacesI-2 Cite:46CFR 108.201Size of Sleeping SpacesI-2 Cite:46CFR 108.203Berths and LockersI-2 Cite:46CFR 108.205Wash Spaces; Toilet Spaces; and Shower SpaceI-2 Cite:46CFR 108.207MessroomsI-3 Cite:46CFR 108.209Hospital SpacesI-3 Cite:46CFR 108.211Miscellaneous Accommodation SpacesI-3 Cite:46CFR 108.213Heating RequirementsI-3 Cite:46CFR 108.215Insect ScreensI-4 Cite:46CFR 108.235Helicopter Facilities - Construction MaterialsI-4 Cite:46CFR 108.237Helicopter Facilities - Fuel Storage FacilitiesI-4 Cite:46CFR 108.239Helicopter Facilities - Fuel Transfer EquipmentI-4 Cite:46CFR 108.415-Fire Main SystemI-4 46CFR 108.429 Cite:46CFR 108.431-Fitted Carbon Dioxide Fire Extinguishing SystemsI-5 46CFR 108.437 U. S. SupplementSection I 1 November 1998Revision 0 I-ii Cite:46CFR 108.486-Fire Protection for Helicopter FacilitiesI-8 46CFR 108.489 Cite:46CFR 108.491-Hand Portable and Semi-portable Fire Extinguishing SystemsI-8 46CFR 108.496 Cite:46CFR 108.497Fireman 9s OutfitsI-9 Cite:46CFR 108.499Fireman 9s Axes I-9 Cite:46CFR 108.503Relationship to International Standards I-9 Cite:46CFR 108.540Survival Craft Muster and Embarkation ArrangementsI-9 Cite:46CFR 108.550Survival Craft Launching and Recovery Arrangements: GeneralI-9 Cite:46CFR 108.553Survival Craft Launching and Recovery Arrangements using Falls and a WinchI-9 Cite:46CFR 108.580Personal Lifesaving AppliancesI-10 Cite:46CFR 108.597Line Throwing AppliancesI-10 Cite:46CFR 108.601CranesI-10 Cite:46CFR 108.665Watertight Door MarkingsI-10 Cite:46CFR 108.701Sounding EquipmentI-10 Cite:46CFR 109.121Operations ManualI-10 Cite:46CFR 170.185Stability Test PreparationI-11 Cite:46CFR 170.210Inclining TestI-11 Cite:46CFR 174.040Stability RequirementsI-11 Cite:46CFR 174.045Restricted ServiceI-11 Severe Storm Condition Cite:46CFR 174.050Stability on BottomI-11 Cite:46CFR 174.065Damage Stability RequirementsI-11 Cite:46CFR 174.080Flooding on SEDU 9sI-11 Cite:46CFR 174.100Appliances for Watertight and Weathertight IntegrityI-12 Cite:46CFR 197 Subpart B Diving SystemsI-12 Cite:46CFR 199.290Stowage of Survival CraftI-12 Cite:NVIC 9-97Steel Ducting (Gauge of Steel)I-12 U. S. SupplementSection I 1 November 1998I - 1Revision 0 I.USCG SUPPLEMENTAL REQUIREMENTS TO ABS RULES AND 1989 IMO MODU CODE Cite:33CFR 67.05Obstruction Lights (IMO CODE Cite: 14.7.2) IMO requires compliance with Coastal State Regulations. USCG states specific requirements as Coastal State. Cite:33CFR 164.35Sounding Equipment (IMO CODE Cite: SOLAS V/12(k) ) Each self-propelled unit must have a mechanical or electronic sounding apparatus. Cite:46CFR 54 Air Receivers, Bulk Tanks, Tensioner Bottles and other Pressure Vessels (IMO CODE Cite: 4.1.3) Boilers, pressure vessels and heat exchangers are to comply with the requirements specified in Section 4/2 of the ABS Rules for Building and Classing Steel Vessels or the ASME Code. Boilers, pressure vessels and heat exchangers manufactured to any other standard will be considered on a case-by-case basis. Cite:46CFR 108.103Equipment Not Required on a Unit (Excess Equipment) (IMO CODE Cite: Chapters 9 & 10)(ABS Rule Cite: 4/4) Each item of lifesaving and fire fighting equipment carried on board the unit in addition to equipment required to be on board is to be approved or be acceptable to the cognizant OCMI for use on the unit. Cite:46CFR 108.131Definitions (IMO CODE Cite: Table 9.1) UCCG considers a corridor to be an accommodation space. Cite:46CFR 108.137Structural Fire Protection (IMO CODE Cite: Table 9.1) (ABS Rule Cite: Table 3/11.1) USCG provides the specific guidance on SFP in NVIC 9-97. Bulkhead separating accommodation space from pantry should be class cA d. Bulkhead separating accommodation space from any store should be class cA d. Cite: 46CFR 108.143Accommodation Space (Sleeping, Mess, Hospital, Recreational, Toilet, Washing and Shower Spaces) (IMO Code Cite: 9.2.9) Except in wash rooms and toilet spaces, each deck covering must be made of an approved material, except an overlay that is no more than 9.375 mm thick. Cite:46CFR 108.147Prohibited Paint in Accommodation Spaces (IMO CODE Cite: Table 9.2.10) (ABS Rule Cite: Table 3/11.5.10) No nitrocellulose or other highly flammable or noxious fume-producing paint or lacquer may be used on a unit. Cite: 46CFR 108.170- Classified Locations and Electrical Installations in Classified Locations 46CFR 108.177 (IMO CODE Cite: Chapter 6)(ABS Rule Cite: 4/1.7 and 4/3B5) An enclosed space that has direct access to a Zone 1 location can be considered non-hazardous if the access has self- closing gas-tight doors forming an air lock. Ventilation and alarms are to comply with ABS/IMO requirements. Note, U. S. SupplementSection I 1 November 1998I - 2Revision 0 other options from ABS MODU Rules and IMO MODU Code that permit a space to be considered safe when it has direct access to a Zone 1 location are not acceptable. Electrical equipment and devices installed in spaces adjacent to hazardous areas and made safe by complying with the reference ABS and IMO cites is to be limited to only essential equipment Refer to Section I, Cite 4/5B7 of the ABS Supplement to ABS Rules for Steel Vessels for Vessels on International Voyages for additional requirements relative to electrical installations in hazardous areas. Cite:46CFR 108.185Ventilation for Enclosed Classified Locations (IMO CODE Cite: 6.4) (ABS Rule Cite: 4/1.9.2) Each ventilation unit is to have alarms that are powered independently of the ventilation motor power and control circuitry and sound at a continuously manned station when the ventilation system for the space is not working Each ventilation system for enclosed classified locations is to provide a complete change of air every five minutes (12 air changes per hour). Cite:46CFR 108.187Ventilation for Brush Type Electric Motors in Classified Spaces (IMO CODE Cite: 6.6) (ABS Rule Cite: 4/3B5.3.3) Ventilation for brush type electric motors in classified locations are to comply with N.F.P.A. 496-1974 "Standard for Purged and Pressurized Enclosures for Electrical Equipment in Hazardous Locations", except that audible and visual alarms may be used if shutting down the motor may cause unsafe conditions. Cite:46CFR 108.201Size of Sleeping Spaces (IMO: International Labor Organization) Minimum deck area and volume per man in sleeping quarters are 2.8m 2 and 6m 3 respectively. Cite:46CFR 108.203Berths and Lockers (IMO: International Labor Organization) Each locker should be at least 300 in 2 and 5 ft tall. For the sleeping quarters, each berth is required to be at least 1 9 from the deck. If berths are on top of each other, the distance between them should be at least 2 96 d. If adjacent to each other, the required distance is 1 96 d. Cite:46CFR 108.205Wash Spaces; Toilet Spaces; and Shower Spaces(IMO: International Labor Organization) (a) For the purposes of this section- (1) cPrivate facility d means a toilet, washing or shower space that is accessible only from one single or double occupancy sleeping space; (2) cSemi-private facility d means a toilet, washing or shower space that is accessible from either of two one-to- four person occupancy sleeping spaces; and (3) cPublic facility d 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 washing basin, 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 one space. (d) Each room adjoining a semi-private facility must have a wash basin if a wash basin 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 wash basin 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 as 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. U. S. SupplementSection I 1 November 1998I - 3Revision 0 (h) No public facility may open into any sleeping space. (i) Each wash basin, 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 wash basin 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) Wash basins may be located in sleeping spaces. Cite:46CFR 108.207Mess Rooms (IMO: International Labor Organization) (a) Each mess room that is not adjacent to the galley that serves it must be equipped with a steamtable. (b) Each mess room must seat the number of persons expected to eat in the mess room at one time. Cite:46CFR 108.209Hospital Spaces (IMO: International Labor Organization) (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. Cite:46CFR 108.210Hospital Space Not Required (IMO: International Labor Organization) (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 wash basin in or immediately adjacent to it. Cite:46CFR 108.211Miscellaneous Accommodation Spaces (IMO: International Labor Organization) (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. Cite:46CFR 108.213Heating Requirements (IMO: International Labor Organization) (a) Each accommodation space must be heated by a heating system that can maintain at least 20 degrees C (68 degrees F). (b) Radiators and other heating apparatuses must be constructed, located or shielded as to avoid risk of- (1) Fire (2) Danger; and (3) Discomfort to the occupants of each accommodation space. U. S. SupplementSection I 1 November 1998I - 4Revision 0 (c) Each exposed pipe in an accommodation space, leading to a radiator or other heating apparatus must be insulated. Cite:46CFR 108.215Insect Screens (IMO: International Labor Organization) (a) Accommodation spaces must be protected against the admission of insects. (b) Insect screen must be installed when natural ventilation is provided. Cite:46CFR 108.235Helicopter Facilities - Construction (IMO CODE Cite: 13.2) (ABS Rule Cite: Table 3/5.3.2) (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 in the dead load of the structure, existing stresses in the deck when it is an integral part of a unit 9s structure, and each of the following loading conditions: (1) As per ABS MODU Rules (2) As per ABS MODU Rules (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. Cite:46CFR 108.237Helicopter Facilities - Fuel Storage Facilities(IMO CODE Cite: 9/11) (ABS Rule Cite: Table 4/2.73) Helicopter fuel storage tanks that are non-integral with the hull are to be either a Marine Portable Tank complying with 46 CFR 64 if built prior to 1 May 1991 or an IM 107 tank complying with 49 CFR 178.270 if built after 1 May 1991. Cite:46CFR 108.239Helicopter Facilities - Fuel Transfer Facilities(IMO CODE Cite: 9/11) (ABS Rule Cite: Table 4/2.73) Each nozzle installed in a Helicopter Fueling System is to be a "deadman" type. A helicopter fueling pump shutoff is to be provided at each of the required access routes to the helicopter deck. Each electric helicopter fuel transfer pump must have a control with a fuel transfer pump operation indicator light at the pump. Each hose in a Helicopter Fueling System is to have a storage reel, be fitted with a static grounding device and meet chapter 3 "Aircraft Fueling Hose" of National Fire Protection Association Standard for Aircraft Fuel Servicing (NFPA 407-1975). Cite:46CFR 108.415- Fire Main System Facilities (IMO CODE Cite: 9.4) 46CFR 108.429 (ABS Rule Cite: 4/4.7 to 4/4.11) Fire Main Systems (Fire Pumps, Piping, Hydrants, Hoses and Nozzles) Each fire pump in a fire main system is to be fitted with a pressure gauge on its discharge side. If a fire pump is used in a system other than the fire main, except for branch lines connected to the fire main for deck washing, each pipe connecting the other system is to be connected to the pump discharge through a shutoff valve at the manifold near the pump. If the pump pressure exceeds the pressure referenced in 4/4.7.6 of the ABS MODU Rules, a U. S. SupplementSection I 1 November 1998I - 5Revision 0 reducing station and an additional pressure gauge is to be fitted in the pipe leading from the discharge manifold to other parts of the fire main. When a reducing station is fitted, the required relief valve and additional pressure gauge are to be located on the discharge side of the reducing station. In a main machinery space, except a shaft alley with no assigned area for storage of combustibles, the jets of water required by 4/4.11.1 of the ABS MODU Rules are both to be from single lengths of hose and each must be from a separate outlet. Outlets from fire hydrants are not to point above the horizontal. Fire hoses are to be of 1½ or 2½ inch nominal diameter and be 50 feet in length. Fire hoses must be lined commercial fire hose that meets Standard 19 of Underwriters' Laboratories Inc., (1971 edition) or Federal Specification ZZ-H-451f. Each fire hose coupling is to be made of brass, bronze or a material with corrosion resistant properties equivalent to brass and bronze. Couplings are to have 9 National Standard Fire hose Coupling (NSFC) threads per inch for 1½ inch hose and 7½ NSFC threads per inch for 2½ inch hose. Fire hose nozzles are to be USCG approved under 46 CFR 162.027. Nozzles previously approved under 46 CFR 162.027 are to be provided with low velocity fog applicators also approved under 46 CFR 162.027 when installed in machinery spaces containing oil fire boilers, internal combustion machinery or oil fuel units. Fire main piping and hydrants are to be installed, as far as practicable, in locations that are not exposed to damage by materials that are moved on or onto the deck. Cite:46CFR 108.431- Fixed Carbon Dioxide Fire Extinguishing Systems Facilities 46CFR 108.437 (IMO: SOLAS II-2/5, II-2/5.2, II-2/13 and II-2/13.2) (ABS Rule Cite: 4/4.15 and 4/4.23.1) Gaseous Type Fixed Fire Extinguishing Systems Fixed gas fire extinguishing systems must be approved equipment. The fixed extinguishing system must comply with the manufacturer's approved Design, Installation, Operation and Maintenance Manual that meets Chapter II-2, Regulation 5.2 of SOLAS and the following supplemental requirements: Quantity, Pipe Sizes and Discharge Rate In dry cargo spaces, the number of kilograms of carbon dioxide required for each space shall be equal to the gross volume of the space in cubic meters divided by 1.873. The gross volume includes trunks extending from the space; however, tonnage openings may be considered sealed. Branch lines to various cargo holds and 'tween decks shall be sized as to ensure a uniform distribution over the space protected. For CO 2 systems installed for enclosed ventilation systems of rotating electrical propulsion equipment, the number of kilograms of carbon dioxide required for the initial charge shall be equal to the gross volume of the system divided by 0.624 for systems having a volume of less than 57 cubic meters, and divided by 0.749 for systems having a volume of 57 cubic meters or more. The piping for the initial charge shall be sized as to ensure a uniform distribution over the space protected, and the discharge of the required amount shall be completed within 2 minutes. For CO 2 systems installed for enclosed ventilation systems of rotating equipment, in addition to the above there shall be sufficient carbon dioxide available to permit delayed discharges of such quantity as to maintain at least a 25% concentration until the equipment can be stopped. If the initial discharge is such as to achieve this concentration until the equipment is stopped, no delayed discharge need be provided. For machinery spaces, tanks, pumprooms, paint lockers and similar spaces, any fixed gas fire extinguishing system used to protect these spaces must comply with the requirements of SOLAS Chapter II-2, Regulation 5. U. S. SupplementSection I 1 November 1998I - 6Revision 0 For spaces specially suitable for vehicles, any fixed gas fire extinguishing system used to protect these spaces must comply with the requirements of SOLAS Chapter II-2, Regulation 53.2.2. Controls If the same cylinders are used to protect more than one space, a manifold with normally closed stop valves shall be used to direct the carbon dioxide into the proper space. If the cylinders are used to protect only one space, a normally closed stop valve shall be installed between the cylinders and the space except for systems for protection of machinery spaces, pumprooms, paint lockers and similar space which contain not more than 130 kilograms of carbon dioxide. Distribution piping to dry cargo spaces shall be controlled from not more than two stations. One of the stations controlling the system for the main machinery space shall be located as convenient as practicable to one of the main escapes from the space. All control stations and the individual valves and controls shall be distinctly marked to indicate the compartments or parts of the vessel to which they lead. Systems for protection of machinery spaces, pumprooms, paint lockers and similar spaces shall be actuated at each station by one control operating the valve to the space and a separate control releasing at least the required amount of carbon dioxide. These two controls shall be located in a box or other enclosure clearly identified for the particular space. Systems installed without a stop valve shall be operated by one control releasing at least the required amount of carbon dioxide. Where provisions are made for the simultaneous release of a given amount of carbon dioxide by operation of a remote control, provisions shall also be made for manual control at the cylinders. Where gas pressure from pilot cylinders is used as a means for releasing the remaining cylinders, not less than two pilot cylinders shall be used for systems consisting of more than two cylinders. Each of the pilot cylinders shall be capable of manual control at the cylinder, but the remaining cylinders need not be capable of individual manual control. Systems for machinery spaces, pumprooms and similar type spaces, which are of more than 130 kilograms of carbon dioxide shall be fitted with an approved delayed discharge so arranged that an approved audible alarm will be automatically sounded for at least 20 seconds before the carbon dioxide is released into the space. Such systems of not more than 130 kilograms of carbon dioxide shall also have a similar delayed discharge, except for spaces which have a suitable horizontal escape. The alarm shall depend on no source of power other than the carbon dioxide. In systems where an alarm is required, the alarm shall be conspicuously and centrally located. Adjacent to all carbon dioxide extinguishing alarms there shall be conspicuously marked: "WHEN ALARM SOUNDS VACATE AT ONCE. CARBON DIOXIDE BEING RELEASED." All distribution valves and controls shall be approved equipment. All controls shall be suitably protected. On systems in which the CO 2 cylinders are not within the protected space the instructions shall also include a schematic diagram of the system and instructions detailing alternate methods of discharging the system should the manual release or stop valve fail to operate. Each control valve to a branch line shall be marked to indicate the space served. If the space or enclosure containing the CO 2 supply or controls is to be locked, a key to the space or enclosure shall be in a break-glass type box conspicuously located adjacent to the opening. Piping The piping, valves and fittings shall have a bursting pressure of not less than 41370 kPa (6000 psi). All piping, valves and fittings of ferrous materials shall be protected inside and outside against corrosion unless specifically approved otherwise. Installation test requirements are as follows: U. S. SupplementSection I 1 November 1998I - 7Revision 0 Upon completion of the piping installation, and before the cylinders are connected, a pressure test in accordance with the manufacturer's Design, Installation, Operation, and Maintenance Manual shall be conducted. Only CO 2 or other inert gas shall be used for this test. Carbon Dioxide Storage All cylinders used for storing carbon dioxide must be fabricated, tested, and marked in accordance with 46 CFR 147.60 and 46 CFR 147.65 or equivalent foreign standards accepted by the USCG as determined by ABS. Discharge Outlets Discharge outlets shall be listed or approved by an independent testing laboratory. Enclosure Openings In all spaces protected by a carbon dioxide system, except cargo spaces, stopping of the ventilating fans is to be automatically actuated upon operation of the carbon dioxide system. This will not be required where the carbon dioxide system is a secondary system in addition to another approved primary system protecting the space. Pressure Relief Where necessary, relatively tight compartments such as refrigeration spaces, paint lockers, etc., shall be provided with suitable means for relieving excessive pressure accumulating within the compartment when the carbon dioxide is injected. Markings CO 2 fire smothering apparatus shall be marked "CO 2 FIRE APPARATUS" in not less than 50 mm (2 in) red letters. Fire Detection Systems Fire detection systems must be approved equipment. A conductor must not be used as a common return from more than one zone. Each connection box that has conductors for more than one zone must be watertight. There must be at least two sources of power for the electrical equipment of each fire detecting and alarm system. The normal source must be the main power source. The other source must be the emergency power source or an automatically charged battery. Upon loss of power to the system from the normal source, the system must be automatically supplied from the other source. The capacity of each system's storage battery must be sufficient to supply the fire detecting and alarm system for a period of not less than one week without recharging. At the end of the one week discharge period, the battery potential must not be less than 80 percent of nominal potential under design load. The capacity of each branch circuit providing power to a fire detection or alarm system must not be less than 125 percent of the maximum load. Each fire detecting zone must not include spaces on more than one deck, except: (a) Adjacent and communicating spaces on different decks in the ends of the vessel having a combined ceiling area of not more than 279 m 2 (3000 square feet). (b) Isolated rooms or lockers in such spaces as mast houses, wheelhouse top, etc., which are easily communicable with the area of the fire-detecting circuit to which they are connected. U. S. SupplementSection I 1 November 1998I - 8Revision 0 (c) Systems with indicators for individual spaces. The fire detecting zone must not contain more than 50 protected rooms or spaces. The system must visually indicate the zone in which the alarm originated. The detectors, the detecting cabinet and alarms must be of an approved type. The fire detecting system must be used for no other purpose, except it may be incorporated with the manual alarm system. A framed chart or diagram must be installed in the wheelhouse or control station adjacent to the detecting cabinet indicating the location of the detecting zones and giving operating instructions. Fixed fire detection and fire alarm systems 3 Installation requirements A sufficient number of call points must be employed such that a person escaping from any space would find an alarm box convenient on the normal route of escape. The manual alarm system must be used for no other purpose, except it may be incorporated with the fire detecting system. Manual fire alarm boxes shall be clearly and permanently marked "IN CASE OF FIRE BREAK GLASS" in at least 12.5 mm (1/2 in) letters. Detector spacing shall be in accordance with the manufacturer's recommendation. Detector spacing in spaces with ceilings greater than 3 m (10 ft) must be corrected in accordance with NFPA 72E. Cite:46CFR 108.486- Fire Protection for Helicopter Facilities (IMO CODE Cite: 9.11) 46CFR 108.489(ABS Rule Cite: 4/4.35) Fire Protection for Helicopter Decks and Refueling Facilities If protein foam is used for protection of the helicopter deck and /or refueling facilities, the design rate is to be 6.52 liters per minute for each square meter (0.16 GPM for each square foot) of the required coverage area for five minutes. A foam system protecting the helicopter deck is to be capable of discharging from each hose at 7 kg/in 2 (100 psi) a single foam stream at a rate of 340 liters (90 gallons) per minute and a foam spray at a rate of 190 liters (50 gallons) per minute. A helicopter deck foam system is to have its operating controls at each of its hose locations. It is to be protected from icing and freezing and be capable of operation within 10 seconds after activation of its controls. The foam hoses at each of the two helicopter deck accesses are to be reel mounted and long enough to cover any point on the helicopter deck. Each hose is to be provided with a foam nozzle that has foam stream, foam spray and off positions. If the same foam system is used to protect the helicopter deck and the fueling facility, the quantity of foam agent provided is to be sufficient to protect both areas. Cite:46CFR 108.491- Hand Portable and Semi-portable Fire Extinguishing Systems Facilities 46CFR 108.496 (IMO CODE Cite: 9.6) (ABS Rule Cite: 4/4.21, Tables 4/4.1 and 4/4.2) Fire extinguishers must be approved equipment. U. S. SupplementSection I 1 November 1998I - 9Revision 0 Each hand portable fire extinguisher that has a nameplate which states that it is to be protected from freezing, must be located where freezing temperatures do not occur. Spare charges for 50% of the required hand portable extinguishers that are rechargeable by on board personnel are to be maintained on the unit. For extinguishers that cannot be recharged by personnel on board the unit, at least one spare extinguisher for each classification and variety is to be maintained on the unit. The frame or support for each size III, IV and V fire extinguisher required, except a wheeled size V extinguisher for the helicopter deck, must be welded or otherwise permanently attached to the bulkhead or deck. Each wheeled size V extinguisher required for the helicopter deck and each wheeled size III, IV and V extinguisher that is not required by Table 4/4.2 of the ABS MODU Rules, must be securely stowed when not in use to prevent them from rolling out of control under heavy sea conditions. Cite:46CFR 108.497Fireman 9s Outfits(IMO CODE Cite: 9.9) Lifeline materials: Bronze wire rope, inherently corrosion resistant steel wire rope, or galvanized or tinned steel wire rope. Lifeline length and strength: Length of 15.2 meters (50 feet) with a minimum breaking strength of 680 kilograms (1,500 pounds) Explosion meter An oxygen explosive meter UL listed. Lifeline connection hardware: Each end is to be fitted with a hook with a 16 millimeters (5/8 inch) throat opening for the keeper. Cite:46CFR 108.499Fireman 9s Axes(IMO CODE Cite: 9.9) Each unit must have at least two (2) fire axes. Cite:46CFR 108.503Life Saving Equipment (IMO CODE Cite: 10.6) All abandonment drills conducted on units carrying immersion suits must include immersion suits. Cite:46CFR 108.540Survival Craft Muster and Embarkation Arrangements (IMO CODE Cite: 10.6) Means must be provided for bringing each davit-launched survival craft against the side of the unit and holding it alongside to allow persons to be safely embarked in the case of a survival craft intended to be boarded over the edge of the deck; and safely disembarked after a drill in the case of a survival craft not intended to be moved to the stowed position with a full complement of persons on board. Cite:46 CFR 108.550Survival Craft Launching and Recovery Arrangements: General Lifeboats and launching appliances may be of aluminum construction only if the stowage location is protected by a water spray system meeting the requirements of 46CFR34.25. Cite:46CFR 108.553Survival Craft Launching and Recovery Arrangements using Falls and a Winch (IMO CODE Cite: 10.6.13) The lowering speed for a survival craft loaded with all of its equipment must be not less than 70 percent of the speed required under 46 CFR 108.553 paragraph (g). 46 CFR 108.553 paragraph (g). The lowering speed for a fully loaded survival craft must be not less than that obtained from the following formula: U. S. SupplementSection I 1 November 1998I - 10Revision 0 (1) S=0.4+(0.02 H), where S is the speed of lowering in meters per second, and H is the height in meters from the davit head to the waterline at the lightest seagoing condition, with H not greater than 30, regardless of the lowering height. (2) S=79+(1.2 H), where S is the speed of lowering in feet per minute, and H is the height in feet, with H not greater than 99. The lowering speed for a fully loaded survival craft must be not more than 1.3 meters per second (256 feet per minute). Cite:46CFR 108.580Personal Lifesaving Appliances (IMO CODE Cite: 10.11) The lifejackets must be readily accessible. Where, due to the particular arrangements of the unit, the required lifejackets could become inaccessible, the OCMI may require an increase in the number of lifejackets to be carried, or suitable alternative arrangements. Each lifejacket must have a lifejacket light approved under approval series 161.112 securely attached to the front shoulder area of the lifejacket. On a unit not in international service, a light approved under approval series 161.012 may be used. However, lifejacket lights bearing approval number 161.012/2/0 are not permitted on units certificated to operate on waters where the water temperature may drop below 10 deg.C (50 deg.F). Cite:46 CFR 108.597Line Throwing Appliances With each line-throwing appliance, an auxiliary line must be kept that meets the following: (i) Has a breaking strength of at least 40 kN (9,000 pounds-force); (ii)Is, if synthetic, a dark color or certified by the manufacturer to be resistant to deterioration from ultraviolet light; and (iii) Is 4 (a) At least 450 meters (1500 feet) long, if the line-throwing appliance is approved under approval series 160.040; or (b) At least 150 meters (500 feet) long, if the line-throwing appliance is approved under approval series 160.031. Cite:46CFR 108.601Cranes (IMO CODE Cite: 12.1)(ABS Rule Cite: Guide for Cranes) Crane design must meet the American Petroleum Institute (API) document API 2C, with Supplement 2. IMO defers to the Administration. Cite:46CFR 108.665Watertight Door Markings(IMO CODE Cite: 3.6.3.2.1) Each watertight door, scuttle, and hatch, required for watertight integrity, which may be opened during normal operations must be marked in letters of contrasting color to the background "Keep Closed". Cite:46CFR 108.701Sounding Equipment (IMO: SOLAS V/12(k) ) Each self-propelled unit must have a mechanical or electronic sounding apparatus. Cite:46CFR109.121Operations Manual (IMO CODE Cite: 14.1) (ABS Rule Cite: Table 1/1.11) Operations Manual is to also include the following: Major Dimensions of Unit, Tonnages, Dry Bulk Capacities, Standard to which designed, hook load capacity, rotary capacity, helicopter maximum deadweight (lbs & kg), helicopter rotor size (feet & meters), cross-flooding valve locations, progressive flooding valve location, guidance on avoidance of structural damage, evacuating procedures, emergency shutdowns list. U. S. SupplementSection I 1 November 1998I - 11Revision 0 The manual is to include the following plans: mechanical, ventilation, and electrical emergency shutdowns, flooding alarms and fire & gas detectors, access to compartments and decks. Cite:46CFR 170.185Stability Test Preparation (IMO CODE Cite: 3.5.10) USCG provides specific requirements for test procedures to be submitted for approval. Cite:46CFR 170.210Inclining Test Requirements (IMO CODE Cite: 3.1) USCG and IMO require periodic deadweight surveys for CSDU 9s. For IMO, if the difference between the calculated and observed lightship displacements are in excess of 1% of the operating displacement, an inclining test is required. For USCG, if the increase of the lightweight displacement since the last inclining test exceeds 3% of the lightweight displacement; or, if the difference between the calculated and observed lightship displacements are in excess of 2% of the lightweight displacement, an inclining is required. Cite:46CFR 174.040Stability Requirements (IMO CODE Cite: 3.3) Each unit must be designed to have at least 2 inches (50mm) of positive metacentric height in the upright position for the full range of drafts. Cite:46CFR 174.045Intact Stability Requirements for Restricted Service and Severe Storm Conditions (IMO CODE Cite: 3.2.4) (ABS Rule Cite: 4/2.51.1) Restricted Service. The USCG has no provision for a cRestricted Service d (50 knot wind) standard. Severe Storm Condition. The unit must be able to change from any normal operating condition to severe storm condition within a minimum period of time as specified in Operation Manual. ABS requires that piping systems be sized such that all draft changes can be made within a maximum of 3 hours. IMO requires similar, except if it can be shown that the unit is operating in an area where it will not encounter severe storms. Cite:46CFR 174.050Stability on Bottom (IMO CODE Cite: 3.4.1) The mat, or each footing, must continually exert a downward force when subject to combined environmental loads. ABS requires sufficient downward loadings to withstand overturning moments. Cite:46CFR 174.065Damage Stability Requirements (IMO CODE Cite: 3.4.3) USCG requires damage stability be met for normal operating and severe storm conditions. ABS and IMO require for normal operating and transit conditions. Cite:46CFR 174.080Flooding of SEDU 9s (IMO CODE Cite: 3.5.5) If fitted with a mat, USCG requires all compartment of the mat to be subject to individual flooding. IMO requires mat flooding as for the main hull, with no simultaneous flooding of mat and hull. ABS requires extent of flooding for the mat as for the main hull, with simultaneous flooding of mat and hull if the mat is within 1.5 meters of the waterline, and less than 1.5 meters horizontally from the edge of the hull. U. S. SupplementSection I 1 November 1998I - 12Revision 0 Cite:46CFR 174.100Appliances for Watertight and Weathertight Integrity (IMO CODE Cite: 3.6.4 & 3.6.5) (ABS Rule Cite: 3/3.9) If a unit is equipped with sliding watertight doors, each sliding watertight door must - (a) Be designed, constructed, tested and marked in accordance with ASTM F-1196; (b) Have controls in accordance with ASTM F-1197, except that a remote manual means of closure, as specified in paragraphs 7.1 and 7.5.1, and a remote mechanical indicator, as specified in paragraph 7.5.2 will not be required; and (c) If installed in a subdivision bulkhead, meet Supplemental Requirements Nos. S1 and S3 of ASTM F-1196 unless the watertight doors are built in accordance with plans previously approved by the United States Coast Guard, in which case only Supplemental Requirements Nos. S1 and S3.1.4 of ASTM F-1196 must be met. In either case, control systems for watertight doors must have power supplies, power sources, installation tests and inspection, and additional remote operating consoles in accordance with Supplemental Requirements Nos. S1 through S4 of ASTM F-1197. Cite:46CFR 197 Subpart BDiving Systems (IMO CODE Cite: 14.6) Diving support systems must meet the following requirements: (a)Piping for diving installations which is permanently installed on the vessel must meet the requirements of Subpart B (Commercial Diving Operations) of 46 CFR Part 197. (b)Piping internal to a pressure vessel for human occupancy (PVHO) must meet the requirements of Subpart B of 46 CFR Part 197. Cite:46CFR 199.290 Stowage of Survival Craft (IMO CODE Cite: 10.3.6.1) On a drillship, 80 meters (262 feet) or more in length but less than 120 meters (393 feet) in length, must be stowed with the aft end of the lifeboat at a distance not less than one length of the lifeboat forward of the vessel 9s propeller; and on a surface unit 120 meters (393 feet) or more in length, must be stowed with the after end of the lifeboat not less than 1.5 times the length of the lifeboat forward of the vessel 9s propeller. Each lifeboat and davit launched liferaft must be arranged to be boarded by its full complement of persons within 3 minutes from the time the instruction to board is given. Cite:NVIC 9-97Steel Ducting ( Gauge of Steel ) (IMO CODE Cite: 9.2.11 - 9.2.20) (ABS Rule Cite: 3/11.5.11 - 3/11.5.20) NVIC 9-97 recommends the use of 22 USSG steel ducting (0.73mm) to avoid additional arrangements for penetrations such as the use of dampers or sleeves. Whereas, IMO will allow any gauge ducting in areas where thicker ducting is not required, so long as it is non-combustible. U. S. SupplementSection II 1 November 1998Revision 0 II- i II. USCG REQUIREMENTS NOT ADDRESSED BY ABS RULES OR 1989 IMO MODU CODE Cite:33CFR 146.210 Emergency Evacuation PlanII-1 Cite:33CFR 159 Marine Sanitation DeviceII-1 Cite:46CFR Part 16Chemical Testing PlanII-1 Cite:46CFR 107.305Lifesaving Equipment PlanII-1 Cite:46CFR 108.160Vertical LaddersII-1 Cite:46CFR 108.167Weather Deck LaddersII-1 Cite:46CFR 108.181 Ventilation for Enclosed SpacesII-1 Cite:46CFR 108.193Accommodation Spaces - RestrictionsII-1 Cite:46CFR 108.195Location of Accommodation SpacesII-2 Cite:46CFR 108.197Construction of Accommodation SpacesII-2 Cite:46CFR 108.199Arrangement of Sleeping SpacesII-2 Cite:46CFR 108.217 Guardrails and BulwarksII-2 Cite:46CFR 108.219GuardrailsII-2 Cite:46CFR 108.221Storm RailsII-2 Cite:46CFR 108.223Guards on Exposed EquipmentII-2 Cite:46CFR 108.403Fire Extinguishing Systems: GeneralII-2 Cite:46CFR 108.500Life Saving Equipment - GeneralII-3 Cite:46CFR 108.530Stowage of Survival CraftII-3 Cite:46CFR 108.550Survival Craft Launching and Recovery Arrangements: GeneralII-3 Cite:46CFR 108.553Survival Craft Launching and Recovery Arrangements using Falls and a WinchII-3 Cite:46CFR 108.580Personal Lifesaving AppliancesII-3 Cite:46CFR 108.621 Equipment Markings: GeneralII-3 Cite:46CFR 108.623 General Alarm Bell SwitchII-3 Cite:46CFR 108.625 General Alarm BellII-3 Cite:46CFR 108.627 Carbon Dioxide AlarmII-4 U. S. SupplementSection II 1 November 1998Revision 0 II- ii Cite:46CFR 108.629 Fire Extinguishing System Branch Line ValveII-4 Cite:46CFR 108.631 Fixed Fire Extinguishing System ControlsII-4 Cite:46CFR 108.633 Fire StationsII-4 Cite:46CFR 108.635 Self-Contained Breathing ApparatusII-4 Cite:46CFR 108.636 Work VestsII-4 Cite:46CFR 108.637 Hand Portable Fire ExtinguishersII-4 Cite:46CFR 108.639Emergency LightsII-4 Cite:46CFR 108.641 Instructions for Changing Steering GearII-4 Cite:46CFR 108.643 Rudder OrdersII-5 Cite:46CFR 108.645 Markings on Lifesaving AppliancesII-4 Cite:46CFR 108.646 Markings on Stowage LocationsII-5 Cite:46CFR 108.647 Inflatable LiferaftsII-5 Cite:46CFR 108.649 Lifejackets, Immersion Suits and LifebuoysII-5 Cite:46CFR 108.650 EPIRBs and SARTsII-6 Cite:46CFR 108.651 Portable Magazine ChestsII-6 Cite:46CFR 108.653 Helicopter FacilitiesII-6 Cite:46CFR 108.655 Operating InstructionsII-6 Cite:46CFR 108.659 Lifesaving Signal InstructionsII-6 Cite:46CFR 108.661 Unit Markings: Draft MarksII-6 Cite:46CFR 109.201 Steering Gear, Whistles, General Alarm, and Means of CommunicationII-7 Cite:46CFR 109.203 SanitationII-7 Cite:46CFR 109.211 Testing of Emergency Lighting and Power SystemsII-7 Cite:46CFR 109.213 Emergency Training and DrillsII-7 Cite:46CFR 109.301 Operational Readiness, Maintenance, and Inspection of Lifesaving EquipmentII-8 Cite:46CFR 109.335 Stowage of Work VestsII-9 Cite:46CFR 109.337 Fireman 9s OutfitII-9 Cite:46CFR 109.339 Location of Fire AxesII-9 U. S. SupplementSection II 1 November 1998Revision 0 II- iii Cite:46CFR 109.347 Pilot Boarding EquipmentII-9 Cite:46CFR 109.419 Report of Unsafe MachineryII-10 Cite:46CFR 109.421 Report of Repairs to Boilers and Pressure VesselsII-10 Cite:46CFR 109.425 Repairs and alterations: Fire Detecting and Extinguishing EquipmentII-10 Cite:46CFR 109.433 Logbook EntriesII-10 Cite:46CFR 109.435 Record of Fire Fighting Equipment InspectionII-10 Cite:46CFR 109.437 Crane Record BookII-11 Cite:46CFR 109.439 Crane CertificatesII-11 Cite:46CFR 109.557 Flammable and Combustible Liquids: CarriageII-11 Cite:46CFR 109.559 Explosive and Radioactive MaterialsII-11 Cite:46CFR 109.563 Posting of DocumentsII-11 Cite:46CFR 109.564 Maneuvering CharacteristicsII-12 Cite:46CFR 199.565Charts and Nautical PublicationsII-12 Cite:46CFR 109.573 Riveting, Welding and Burning OperationsII-12 Cite:46CFR 109.577 Helicopter FuelingII-12 Cite:46CFR 199.60 CommunicationsII-12 Cite:46CFR 199.70 Personal Life Saving AppliancesII-12 Cite:46CFR 199.80 Muster List and Emergency InstructionsII-13 Cite:46CFR 199.110 Survival Craft Muster and Embarkation InstructionsII-13 Cite:46CFR 199.120 Launching StationsII-13 Cite:46CFR 199.130 Stowage of Survival CraftII-13 Cite:4

less