Rob Wellens OEWG Meeting 11 November 2014 Topics covered There are four areas of proposed change Separate dose recording Introduction of a time integrated radon exposure value Annual average not a 24 ID: 614033
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Slide1
Radon - BSS Directive - HSE Proposals
Rob Wellens
OEWG Meeting
11 November 2014Slide2
Topics covered
There are four areas of proposed change:
Separate dose recording
Introduction of a “time integrated radon exposure value”
Annual average, not a 24
hr
measurement
When to notify HSESlide3
RN1. Time integrated radon exposure value (TIREV)
What is TIREV?
BSSD introduces the concept of TIREV for workplaces above 300
Bq m
-3
Equivalent of 6mSv effective dose
An easy calculation for
dutyholders
to see whether their measurement equates to 6mSv
Not envisaged as a regulatory requirement
An aid for
dutyholdersSlide4
RN1. Time integrated radon exposure value (TIREV) (2)
Current requirement
None
BSS requirement
Article 35.2 allows for the use of a TIREVSlide5
RN1. Time integrated radon exposure value (TIREV) (3)
HSE Proposal
To introduce a TIREV
Preliminary estimated impact
Familiarisation costsSlide6
RN2. Separate Dose Recording
Current requirement
IRR99 requires an individual dose record, but does not require that radon doses be recorded separately on that dose record.
BSS requirement
Article 43.4 requires an individual dose record records occupational radon doses separatelySlide7
RN2. Separate Dose Recording (2)
HSE Proposal
To
require separate dose recording
Preliminary estimated impact
Any ADS approved to record radon doses would need to be able to demonstrate how the radon doses are recorded separately
HSE is looking to work with these ADSs to establish the costs involvedSlide8
RN3. Annual Average
Current requirement
IRR99 sets a level of
400Bq m
-3
in a 24 hour period
BSS requirement
Article 54.1 sets a level of
300Bq
m
-3
as an annual
averageSlide9
RN3. Annual Average (2)
HSE Proposal
To use an annual average
HSE
estimates that IRR99 level equates to ~270Bq
m
-3
annual
average
Radon is a chronic exposure issue, so annual average makes more senseSlide10
RN3. Annual Average (3)
Preliminary estimated impact
Easier to understand and use
A very small number of
dutyholders
may come out of scope
Some familiarisation costsSlide11
RN4. Notification
Current requirement
IRR99
requires HSE to be notified if levels above
400Bq m
-3
in a 24 hour
period are measured
BSS requirement
Article
54.3 requires notification if
dutyholders
cannot remediate below an annual average of
300Bq m
-3Slide12
RN4. Notification (2)
HSE
Proposal
To require notification after remediation
To make radon risk assessment and measurement requirements explicitSlide13
RN4. Notification (3)
Preliminary estimated impact
Smaller number of notifications to HSE
Greater clarity for
dutyholders
regarding regulatory requirements
Neutral effect on measurement and remediation, as this has always been required
Some familiarisation costsSlide14
Questions / Comments?
To re-emphasise
These are HSE’s preliminary proposals on how to implement the BSSD (radon requirements)
Do you have any questions / comments on the preliminary proposalsSlide15
Involvement - Joining the Radiation Community of Interest
If you want to be invited to join, please contact -
radiation.policy.team@hse.gsi.gov.uk