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E: References [Table of Contents] Sec.2: Hazard Management and Safety Case (Consultancy Services)

DNV-OSS-202 Verification for Compliance with UK Shelf Regulations

[-] Sec.1: General
[-] F: Definitions and Terminology

Sec.1
F. Definitions and Terminology

Sec.1
F 100   General

Sec.1 F
101   The following terms and definitions are provided in accordance with UK regulations and guidance, and apply specifically to this service specification.

Sec.1
F 200   Definitions

Sec.1 F
201   ALARP: Refers to the principle of reducing risks to As Low As Reasonably Practicable. This means that once risks are considered to be tolerable, further risk reduction measures are balanced against the cost (in money, time or trouble) of implementing such measures. The emphasis is to implement improvements unless they can clearly be shown to be "not reasonably practicable", i.e. cost of implementation is unacceptable and disproportionate to safety benefit.

ALARP is a significant driver in the "non-prescriptive" approach of the UK regime, and hence affects the acceptability of installations for UK operation. Further information on ALARP and tolerability are given in SCR Guidance Notes and the HSE publication The Tolerability of Risk from Nuclear Power Stations.

Sec.1 F
202   Combined operation: Refers to two or more installations, when an activity is carried out from, by means of or on one installation which:

  1. is carried out temporarily for a purpose related to the other installation (s); and
  2. could affect the health and safety of persons on any of the installations.


Sec.1 F
203   Competence: Relates to relevant theoretical and practical knowledge and practical experience to enable a professional judgement to be made regarding the importance and suitability of plant to be assessed.

Sec.1 F
204   Duty Holder: Means (a) in relation to a fixed installation, the operator; and (b) in relation to a non production unit, the owner. The duty holder is responsible for discharging the duties under UK regulations. Further information regarding operator and owner is given in SI 1995/738 (MAR) Regulation 2. In the early stage of a project where no Duty Holder has been appointed, the Licensee has the responsibility of Duty Holder.

Where a duty holder is not yet appointed, or work is to be contracted between separate parties, e.g. designer, shipyard, owner, it is important that individual roles in fulfilling UK requirements be carefully considered.

Sec.1 F
205   Escape: The process of leaving the installation in an emergency. Means of escape includes items which assist with descent to the sea, such as davit launched life rafts, chute systems, ladders, and individually controlled descent devices; and items in which personnel can float on reaching the sea, such as throw-over life-rafts.

Sec.1 F
206   Evacuation: A planned and controlled method of leaving an installation and its vicinity without directly entering the sea. Means of evacuation offer protection from the hazard, and have their own motive power to enable persons to move quickly away from the installation.

Sec.1 F
207   Fixed Installation: Under the terms of UK law and this service specification means an offshore installation other than a mobile offshore unit.

Sec.1 F
208   Floating offshore installation: A buoyant construction engaged in offshore operations including drilling, production, storage or support functions, and which is designed and built for installation at a particular offshore location.

Sec.1 F
209   HSE: The UK Health and Safety Executive, which is the regulator for health and safety on offshore installations in UK waters.

Sec.1 F
210   Independent: A person is regarded as independent only where he has had no involvement or responsibility related to the aspect or thing to be verified, nor any financial interest, which might compromise his objectivity; and he is sufficiently independent of any management system which bears responsibility for the aspect or thing to be examined, that he will be objective in discharging his function.

Sec.1 F
211   Initial Suitability: A confirmation by the ICP that the SCE is in accordance with the performance Standard when first put into service or after modification or change in PS.

Sec.1 F
212   Major Accident: Defined in Regulation 2(1) of SCR, as:

  1. A fire, explosion or other release of a dangerous substance involving death or serious injury to persons on the installation or engaged in an activity on or in connection with it.
  2. Any event involving major damage to the structure of the installation or plant affixed thereto or any loss in the stability of the installation.
  3. The collision of a helicopter with the installation.
  4. The failure of life support systems for diving operations in connection with the installation, the detachment of a diving bell used for such operations or the trapping of a diver in a diving bell or other subsea chamber used for such operations; or
  5. Any event arising from a work activity involving death or serious injury to five or more persons on the installation or engaged in an activity in connection with it.


Sec.1 F
213   Mobile offshore unit (MOU): A buoyant construction engaged in offshore operations including drilling, production, storage or support functions, not intended for service at one particular offshore site and which can be relocated without major dismantling or modification.

A MOU which is moving into UK waters for production purposes is treated as a fixed installation under the terms of UK law and this service specification.

Sec.1 F
214   Offshore installation: Offshore installation is as defined in Regulation 3 of SI 1995/738 (MAR). This also deems an offshore installation to include any part of a pipeline or any apparatus or works that are connected to the installation and within the 500 m zone.

Sec.1 F
215   Performance Standard (PS): A statement which can be expressed in qualitative or quantitative terms, of the performance required of a system, item of equipment, person or procedures in order to manage a hazard.

The performance standard should contain sufficient information against which to assess the suitability and condition of the item to which it applies. This is expected to include the purpose of the measure(s), and the associated requirements of functionality, reliability, availability and survivability.

Sec.1 F
216   Safety Case: The formal document prepared pursuant to Regulation 2(2) of SCR.

Sec.1 F
217   Safety-Critical Elements: Means such parts of an installation and such of its plant (including computer programs), or any part thereof (SCR Regulation 2):

  1. The failure of which could cause or contribute substantially to; or
  2. A purpose of which is to prevent, or limit the effect of, a major accident hazard.

This definition also applies to temporary equipment brought onto the offshore installation.

Sec.1 F
218   SMS: Safety Management System.

Sec.1 F
219   UK written scheme: Refers to the written schemes required under PFEER and SCR to ensure that the safety critical elements are or, where they remain to be provided, will be suitable; and where they have been provided, remain in good repair and condition.

Sec.1 F
220   Well Intervention Unit: A unit that connects to a well and enters the hydrocarbon barrier of the well. Since it has the possibility of breaching the hydrocarbon barrier it is defined as an installation by HSE UK.

Sec.1 F
221   Well Operation means:

  1. the drilling of a well, including the recommencement of drilling after a well has been completed, suspended or abandoned by plugging at the sea-bed; and
  2. any operation in relation to a well during which there may be an accidental release of fluids from that well which could give rise to the risk of a major accident.
E: References [Table of Contents] Sec.2: Hazard Management and Safety Case (Consultancy Services)