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S-002 Rev. 3, November 1997

Please note that whilst every effort has been made to ensure the accuracy of the NORSOK standards neither OLF nor TBL or any of their members will assume liability for any use thereof.

Working environment

S-002 Rev. 3, November 1997

CONTENTSFOREWORD INTRODUCTION 1 SCOPE 2 NORMATIVE REFERENCES 3 DEFINITIONS AND ABBREVIATIONS 3.1 Definitions 3.2 Abbreviations 4 CONTROL AND VERIFICATION ACTIVITIES 4.1 General 4.2 Procedures and work instructions 4.3 Experience report 4.4 Concept working environment analysis 4.5 Organisation and manning study 4.6 Risk analysis 4.7 Psycho-social analysis 4.8 Working environment area limits 4.9 Working environment analyses 4.10 Constructability analysis 4.11 Working environment inspections 4.12 Working environment status 5 WORKING ENVIRONMENT REQUIREMENTS 5.1 Arrangements 5.2 Ergonomics 5.3 Technical appliances 5.4 Chemical substances and products 5.5 Noise and vibration 5.6 Illumination 5.7 Indoor climate 5.8 Outdoor operations 5.9 Radiation ANNEX A WORKING ENVIRONMENT AREA LIMITS (NORMATIVE) ANNEX B VERTICAL AND HORIZONTAL CLEARANCES AND DISTANCES (NORMATIVE) ANNEX C DETAILED REQUIREMENTS RELATED TO INSTALLATION AREAS (NORMATIVE) ANNEX D TYPICAL HAZARDOUS SUBSTANCES (NORMATIVE) ANNEX E VIBRATION LIMIT CURVES (NORMATIVE) ANNEX F WORKING ENVIRONMENT AREA CHART (NORMATIVE) ANNEX G LIST OF APPLICABLE ACTS, REGULATIONS, STANDARDS AND GUIDELINES FOR THE NORWEGIAN CONTINENTAL SHELF (INFORMATIVE) NORSOK standard 3 3 4 4 5 5 7 7 7 8 9 9 9 10 10 10 11 13 13 13 14 14 14 16 16 17 20 20 21 21 22 24 27 28 31 33 35

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NORSOK standard

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Working environment

S-002 Rev. 3, November 1997

FOREWORDNORSOK (The competitive standing of the Norwegian offshore sector) is the industry initiative to add value, reduce cost and lead-time and remove unnecessary activities in offshore field developments and operations. The NORSOK standards are developed by the Norwegian petroleum industry as a part of the NORSOK initiative and are jointly issued by OLF (The Norwegian Oil Industry Association) and TBL (Federation of Norwegian Engineering Industries). NORSOK standards are administered by NTS (Norwegian Technology Standards Institution). The purpose of this industry standard is to replace the individual oil company specifications for use in existing and future petroleum industry developments, subject to the individual company's review and application. The NORSOK standards make extensive references to international standards. Where relevant, the contents of this standard will be used to provide input to the international standardisation process. Subject to implementation into international standards, this NORSOK standard will be withdrawn. Annexes A, B, C, D, E, F are normative. Annexes G, H, I and J are informative.

INTRODUCTIONThis standard applies to the design of new installations and modification or upgrading of existing installations for offshore drilling, production, utilisation and pipeline transportation of petroleum, including accommodation units for such activities. Revision 3 includes the following changes: Implementation of the parts of the guidelines to the Norwegian Regulations relating to systematic follow up of the working environment in the petroleum activities that affect design. Guidelines to the design of the living quarters and doors and stairs are found in NORSOK standards for the architectural discipline. Updating of the standard in view of new regulations and European standards. Implementation of experiences from Revision 2 in project work.

NORSOK standard

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Working environment

S-002 Rev. 3, November 1997



This NORSOK standard addresses design principles related to the working environment. It also covers requirements to the procedures for control and verification of design in order to ensure that these principles are implemented. The purpose of this standard is to ensure that the design of the installation promotes the quality of the working environment during the operational phase.



The following standards include provisions that, through reference in this text, constitute provisions of this NORSOK standard. Latest issue of the references shall be used unless otherwise agreed. Other recognised standards may be used provided it can be shown that they meet or exceed the requirements of the standards referenced below. EN 292 EN 294 EN 349 EN 547 part 1 part 2 part 3 EN 563 EN 614 part 1 EN 626 prEN 1005 part 2 part 3 EN 1050 prEN 12437 part 1 part 2 part 3 part 4 DIN VDE 0848, Part 4 Safety of machinery - Basic concepts, general principles for design, Part 1 and 2. Safety of machinery - Safety distances to prevent danger zones to be reached by upper limbs. Safety of machinery - Minimum gaps to avoid crushing of parts of the human body. Safety of machinery - Human body dimensions. Principles for determining the dimensions required for openings for whole body access into machinery. Principles for determining the dimensions required for access openings. Anthropometric data. Safety of machinery - Temperature of touchable surfaces - Ergonomics data to establish temperature limit values for hot surfaces. Safety of machinery - Ergonomic design principles. Terminology and general principles. Safety of machinery - Reduction of risks to health from hazardous substances emitted by machinery. Safety of machinery - Human physical performance. Manual handling of objects associated to machinery. Recommended force limits for machinery operations. Safety of machinery - Risk assessment. Safety of machinery - Permanent means of access to machines and industrial plants Choice of a fixed means of access between two levels Working platforms and gangways Stairways, stepladders and guard trails Fixed ladders Safety at electro magnetic fields.

NORSOK standard

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Working environment

S-002 Rev. 3, November 1997

ISO 717/1 ISO 5349 ISO 2631/1 NORSOK C-001 NORSOK C-002 NS 4815 NS 8172

Acoustic rating of sound insulation in buildings and of building elements. Guidelines for the measurement and the assessment of human exposure to hand-transmitted vibration. Evaluation of human exposure to whole body vibration- Part 1: General requirements. Living quarters area. Architectural components and equipment. Determination of occupational noise exposure. Measurement of noise levels from technical installations.

See Annex G for a list of acts, regulations, standards and guidelines for the Norwegian continental shelf.

33.1 Can

DEFINITIONS AND ABBREVIATIONSDefinitions Can-requirements are conditional and indicate a possibility open to the user of the standard. Area that is fully protected against exposure to open air and ambient conditions. A source of possible injury or damage to health. Shall mean informative in the application of NORSOK standards. Three levels of manning of work areas and work places are defined: Permanently manned; Work area or work place manned at least 8 hours a day for at least 50 per cent of the installations operation time. Intermittently manned; Work area or work place where inspection, maintenance or other work is planned to last at least two hours a day for at least 50 per cent of the installations operation time. Normally not manned; Work area or work place that is not permanently or intermittently manned.

Enclosed work area

Hazard Informative references Manning


May indicates a course of action that is permissible within the limits of the standard (a permission). Shall mean normative in the application of NORSOK standards. Area with no substantial obstacles to the free. The area is completely exposed to ambient conditions.

Normative references Open work area

NORSOK standard

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Semi-open work area

Area that is weather protected e.g. with weather louvers, and partially exposed to the open air. Shall is an absolute requirement which shall be followed strictly in order to conform to the standard. Should is a recommendation. Alternative solutions having the same functionality and quality are acceptable. A work area is an area of the installation, where personnel stay or move in connection with work. A work place is a volume within a work area, allocated to one or more persons to complete work tasks related to production, inspection or maintenance. The totality of all physical, chemical, biological and psychological factors at work that may affect the employees health and well being through acute trauma or lasting exposure. The influences from lasting exposure may be positive and negative.



Work area

Work place

Working environment

Working Environment Analysis

A systematic work process including: Definition, limitation and break down of the installation with respect to one or more parameters (e.g. area, activities during operation, type of equipment, chemical substance). Hazard identification.. Estimation of potential consequences to the employees health and, if feasible, of probability of occurrence. Evaluation of needs of remedial actions. Development of recommendations on remedial actions and/or follow-up activities. Identification of nonconformities and problems in meeting specified requirements

Working Environment Program

A document co