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RN05: WORKING ENVIRONMENT – BARENTS SEA // Working environment design requirements• Decks, access ways, stairways and stairwayrailings that are exposed to snow, ice or frostaccretion and required for frequent daily use.• Drainage systems, including scuppers, drainsand down-piping on all decks and access waysexposed to snow, ice or frost accretion.• Helicopter deck for offshore facilities (Ref.NORSOK C-004, Helicopter deck on offshoreinstallations, Clause 17 on sub-zero conditions;and NORSOK S-001, Technical Safety, Clause20.4.9 on helideck fire fighting system)• Helicopter deck for ships, if it is classifiedas a primary element of the vessel’s escape,evacuation and rescue (EER) plan, or ifthe ship has primary EER or SAR supportduties for an offshore installation.Anti-icing arrangements (generally by means ofheating or cover) shall have sufficient capacity tokeep the area or equipment free of ice, snow or frostdown to the facility’s minimum design operatingtemperature, accounting for heat loss by applyinga scaling factor related to a specified design windspeed.De-icing arrangements shall be provided to• Decks, access ways, gangways, stairways andstairway railings exposed to snow, ice or frostaccretion that are not in frequent daily use• Railings• Helicopter deck for ships, if not classified as aprimary element of the vessel’s EER plan, and ifthe ship does not have EER or SAR support duties.De-icing arrangements shall be sufficient to removeice, snow or frost accumulations within a reasonableperiod of time (normally 4 to 6 hours), under theicing conditions specified in the working environmentdesign basis (see 5.2.1).In arrangements with electric heating cablesor heating pipes with fluids or steam as a heatingmedium, special attention shall be paid to the heattransfer from the cables or piping to the structureto be heated. The spacing of cables or pipes shallbe appropriate for efficient heating. The fasteningof cables or pipes shall be such that the heat will bereadily dissipated to the structure.In arrangements applying heating by fluids inpipes, additional capacity of steam plants or thermaloil heaters must be calculated.Heat tracing should be of the self-limiting type(Ref. NORSOK E-001, Clause 6.10.2).6.1.5. Safety showers and eye wash stationsProposed standard – Safety showers and eye washstations shall be protected from freezing. Theyshall be located such that users are protected fromexposure to freezing temperatures.The locations of safety showers and eye washstations shall be identified through an evaluationconsidering the chemicals handled, spillage that mayoccur, and risk for burns or exposure to personnel,and also considering protection of both the showeror eye wash station and the user from exposure tofreezing temperature. Reference is made to NORSOKS-001 for Technical safety, Clause 22.4.2.2.Where safety showers and eye wash stations willbe located in areas subject to freezing temperatures,they shall be located in a heated enclosure and waterlines to the showers/stations shall be trace heatedwith thermostatically controlled, low voltage electricheating systems (Ref. ISO 19906 for Arctic offshorestructures, Clause 15.2.9.5).6.2. Ergonomics6.2.1. Prevention of musculoskeletal injuriesReference is made to NORSOK S-002, Clause 5.2.1.1.Proposed standard – Workplaces shall be designedsuch that the personnel are not exposed to excessiveworkloads with risks of musculoskeletal injury. Thedesign shall prevent additional musculoskeletal stresscaused by exposure to low temperature and otheraspects of the Arctic physical environment.6.2.2. Human-machine interfaces/human factorsReference is made to NORSOK S-002, Clause 5.2.2and 5.8.0-6.Proposed standard – The design of displays andcontrols shall take into account the expected polarenvironmental conditions, including cold, ice, snow,wind, darkness and low-angle sunlight. It should bepossible to operate outdoor controls and displayswhile wearing insulated gloves and other personalprotective equipment required for working in a coldand potentially icy environment. The design shallensure displays may be comfortably read duringconditions of polar winter and low-angle sunlight.6.2.3. Reduced motion due to clothing and coldProposed standard – Physical motion may bereduced and restricted in cold temperatures dueto cold weather clothing and muscular stiffness.Precise movements may be difficult. The likelihoodof reduced motion and manoeuvrability due to coldshall be taken into account during design.188RUSSIAN–NORWEGIAN COOPERATION PROJECT
RN05: WORKING ENVIRONMENT – BARENTS SEA // Working environment design requirementsBarents 20206.3. Noise and vibration6.3.1. Noise and vibration analyses for ArcticoperationsReference is made to NORSOK S-002, Clause 4.4.7.Proposed standard – During concept definitionand optimisation/front-end engineering design, theactivity shall ensure that major noise and vibrationsources are identified (NORSOK S-002, Clause4.4.7.0-2 and 3). On installations that are plannedfor use in the Barents Sea, noise and vibration causedby external Arctic environmental conditions, suchas the interaction of sea ice on the installation,and by icebreaking and ice management activities,shall be considered in the concept definition andoptimisation/front-end engineering design.During engineering, the activity shall ensure thatsignificant noise and vibration sources are identifiedand their influences evaluated (NORSOK S-002,Clause 4.4.7.0-9 and 10). On installations thatare planned for use in the Barents Sea, noise andvibration caused by external Arctic environmentalconditions, such as the interaction of sea ice on theinstallation, and by icebreaking and ice managementactivities, shall be considered in the evaluation.Evaluations should take into account thecombined effects of noise and vibration on a personover a 24 hour period.6.3.2. Additional health risks from hand/armvibration in coldExposure to hand-arm vibration (HAV), particularlyfrom handheld tools, is a risk factor related toperipheral vascular disease and Raynaud’s disease(white finger). Cold environment is known as a cofactorincreasing the risk for developing disease.Exposure is particularly relevant during maintenanceperiods. Even if most maintenance is performed inthe summer, Arctic summer climate conditions arestill defined as a cold working environment (that is,temperatures below +10°C).Proposed standard – Hand/arm vibrations shall meetthe requirements stated in ISO 5349 (all parts).Use of hand-arm vibration tools should be kept toa minimum when working in a cold climate.Vibration requirements should be established fortools used in cold.Workers shall be monitored routinely for signs ofdisease related to hand arm vibration.6.4. Visibility6.4.1. Operator cabin windowsReference is made to ISO 17899 for marine electricwindow wipers and NORSOK R-CR-002 for liftingequipment.Proposed standard – Operator cabins on an offshoreinstallation shall be provided with suitable windowsequipped with wind-shield wipers, wind-shield spraynozzles and a window heating/defrosting system, asappropriate, to ensure a clear view of the relevantworking area in all expected climatic operatingconditions. These include crane, drilling, offloading,helicopter deck and other operator cabins.Offshore operator cabins shall fitted with meansto defrost the windows. The window heating anddefrosting system shall be dimensioned to preventicing of the windows down to the minimum designoperating temperature, accounting for heat loss byapplying a scaling factor related to a specified designwind speed.Offshore operator cabins exposed to rain andsnow shall be fitted with window wipers compliantwith ISO 17899, giving particular attention to theprovision for de-icing. The window wipers andwindow washing system shall be protected fromfreezing down to the minimum design operatingtemperature, accounting for heat loss by applying ascaling factor related to a specified design wind speed.6.5. Illumination6.5.1. Illumination studiesReference is made to NORSOK S-002, Clause 4.4.8.Proposed standard – During engineering, quality ofillumination should be analysed for both internal andexternal working and living spaces. The illuminationshould be analysed for various weather conditionsand consider the unique seasonal illuminationrequirements during the prolonged periods ofdarkness (polar winter) and light (polar summer),as well as the effects of low-angle sunlight. Specialattention should be given to the illumination of theoutdoor areas, as several operations and tasks that areusually conducted during normal daytime workinghours will take place in darkness during winter days.6.5.2. Preventing glareReference is made to NORSOK S-002, Clause 5.6.0-10.Proposed standard – Provision shall be made toavoid direct glare from sunshine, from artificiallight sources and from reflecting surfaces. Specialconsideration shall be given to the prolonged periodsin the Barents Sea when the sun is low on the horizonReport no 2012-0690 189
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Barents 2020Report no 2012-0690 1
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Barents 2020Barents 2020Assessment
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Barents 20206. Contents of Risk Man
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Barents 20203. Hazard Identificatio
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Barents 2020CONCLUSIVE SUMMARYThe B
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2. Cooperation PartnersThe last Ste
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RN02: DESIGN OF FLOATING STRUCTURES
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RN03: RISK MANAGEMENT OF MAJOR HAZA
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RN04: ESCAPE, EVACUATION AND RESCUE
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RN07 // BibliographyBarents 20207.
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RN07 // APPENDIXBarents 2020Table A
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RN07 // APPENDIXBarents 2020Appendi
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RN07 // APPENDIXBarents 2020Report
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RN01: CO-ORDINATION OF DELIVERABLES
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