Our guide to the IRR99 radiation regulations, designed for radiation workers and employers. These Regulations supersede and consolidate the Ionising Radiations Regulations and the Ionising Radiations (Outside Workers) Regulations It should be noted that in IRR99 will be replaced with the Ionising Radiations. Regulations and this document and other ONR guidance will be.

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Dose assessment and recording The principle of justification is that no practice regualtions exposures to radiation should be adopted unless it produces sufficient benefit to the exposed individuals or to society to regulationz the radiation detriment it causes. As an example, the use of mobile gauging equipment at multiple test locations involves the designation of temporary Controlled Areas, which makes the use of warning tape or other physical barrier impracticable.

The individual concerned must be informed of the result of the dose assessment and the employer must keep a record of the result for 50 years after the date of the occurrence. Transitional provisions Reg The following conditions apply to the use of this higher effective dose limit: However, responsibility ultimately rests with the employer and this cannot be delegated. In general, the value assigned to any dose constraint is intended to represent a level of dose which ought to be achieved in a well-managed practice.

Where an employee who has received an ‘overexposure’ is to continue radiation work, his applicable dose limit shall be the proportion of the annual limit in the time period remaining. Examples include housings, enclosures, shielding and beam collimation for radiation sources and X-rays and containment igr99 radioactive materials to prevent the spread of contamination. All PPE must be maintained and periodically examined. Dose summaries are to be kept by the employer for at least 2 years.

Where the employer suspects that an individual has received an ‘overexposure’, such that a relevant dose limit may have been exceeded, he is required to carry out an immediate investigation into the circumstances and keep a copy of such investigation report for at least 2 years.

The Ionising Radiations Regulations IRR are statutory instruments which form the main legal requirements for the use and control of ionising radiation in the United Kingdom. This regulation is not required where the release is in accordance with an Authorisation licence issued under the Radioactive Substances Act Prior to the classification of any person they must first be certified fit in a health record by either an ‘appointed doctor’ or employment medical adviser.


Established Recognised by the HSE.

Ionising Radiation Regulations – free guide to IRR99

All of the Radiation Regulations came into effect on 1 Januaryexcept for Regulation 5 Authorisation of specified practices which came into force on 13 May Please type your question. In addition, each instrument must have undergone performance tests before use and periodically at least once every year. Modifications relating to the Ministry of Defence etc. HSE aims to reduce work-related death, irr999 and ill health. Where the employer employs an ‘outside worker’, the ‘approved dosimetry service’ must provide the worker with a valid ‘radiation passbook’.

To be compliant with IRR17the HSE requires all completed notifications, registrations and consent applications to be submitted by 6 February The dose limit to the lens of the eye has been reduced based on ICRP recommendation, [17] the new limits are now as follows.

Notification of specified work.

Date of issue of the passbook by the approved dosimetry Where jrr99 is appropriate, ‘dose constraints’ should be used at the planning stage of radiation protection to assist in restricting exposures as far as reasonably practicable. The cumulative dose assessment in irr99 for the year to The employer must make available copies of recent dose summaries and dose records to classified persons at their request.

Whilst being moved on the premises or site a source must be kept in a suitable and labelled receptacle.

On approval of a dosimetry service the HSE issues a certificate of approval for specified areas of dosimetry which may be subject to conditions and may be revoked at any time. Dose limitation for overexposed employees Reg Prior Risk Assessment Reg 7 1 Before any new activity involving work with radiation can proceed the employer must make an assessment of the risk to employees and others in order to identify the measures to be taken to restrict exposures.

The employer shall ensure that any employee in respect of Where an employer puts into effect a system of dose Keeping and moving of radioactive substances Reg The Radiation Protection Supervisor RPS should receive formal training appropriate to the radiation source under his supervision sealed sources, X-rays, radiochemicals, etc. Work with ionising radiation shall not be required to be Extension outside Great Britain.

A statement that the passbook has been approved by the This graded, risk-based approach follows the below stages:. Modification, revocation and saving. Justification is one of the key principles of radiological protection established by the International Commission on Radiological Protection on which the radiological framework of the UK is based. The examination may be carried out during erection or installation, commissioning, or trials prior to use and will normally require co-operation between employers.


Such notification values for the common range of radionuclides in industrial or research use as sealed sources are given below:. Justification Justification is one of the key principles of radiological protection established by the International Commission on Radiological Protection on which the radiological framework of the UK is based.

Reg 7 2 Before any use of radiation can proceed the employer needs to ensure that an assessment has been undertaken in line with the ‘MHSWR’ which identifies all hazards with the potential for causing a radiation accident, and the nature and the magnitude of the risks to employees and others arising from these hazards. Reg 11 Schedule 4 – Part II – Special circumstances Where an employer is able to show that the occupational dose limits set out in Table 2 are impracticable due to the nature of the work being undertaken, the effective dose to employees aged 18 or over may be limited to mSv in 5 consecutive calendar years with a maximum in any single year of 50 mSv.

The following diagram summarises the considerations that are important for deciding on the need for a Controlled Area. Such values for the common range of radionuclides used in industry and research are given in below.

Prevent the accident occurring Limit the consequences should it occur Provide employees with information, instruction, training and equipment necessary to restrict exposures For further precautions the employer should consider the need to designate certain working areas as Controlled or Supervised Areas and to take steps to prevent the possible spread of contamination.

The Ionising Radiations Regulations 1999

Once the pregnancy has been formally declared to the employer in writing Reg 14 c the employer must ensure that the dose to the foetus is unlikely to exceed 1 mSv during the remainder of the pregnancy. Prior risk assessment Reg 8: Where possible, interlocks or trapped key systems should be provided to: Regulation 5 of MHSWR also requires employers to make arrangements for effective planning, organisation, control, monitoring and review of preventative and protective measures, including those for restricting exposures to ionising radiations.

Sealed sources and articles containing or embodying radioactive substances