Dose Alert Settings

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Dosimetry Data

Dose Alert Settings

Dose Alerts are like Custom Notifications, with more options and more complex options. Dose Alerts are accessed via the Alerts button in the Dosimetry tab. The first list displayed is the list of Dose Alerts that have already been detected. Initially this will be empty (normal).

Once one or more Dose Alert Settings have been created and a Scan performed, which does find Dose Readings or Dose Reading Aggregates that meet Alert Setting Thresholds, then there will be detected Dose Alerts listed for further investigation;

Dose Alert Setting Dose Alerts Filters Reference Context

Dose Alerts are detected by selecting the required Dose Alert setting (or creating a new one) and then clicking the Scan button. A progress meter indicate a scan is in progress. Any Alerts found are shown.

When new Dose Alerts are detected a message indicates how many new alerts have been recorded:

Dose Alerts Filters

The Filters available in the Dose Alerts listing are uniquely setup to maximise their benefit.

The Dose Alert Filter dropdown values are all based on values that appear in the list of detected Dose Alerts displayed. This means there are not filters appearing that will not display data when selected.

All filters are cascading, and a top-down filter effect occurs after each filter selection.

A special data storage and filter switch option is included. If a Dose Alert happened many years ago and Campus and Centre names have since changed, the Dose Alert listing can switch between the names of Campuses,

The user can switch between Centres and so on (Reference Values) from the past and their current versions. The original names and all data associated with the Dose Alert at the time it was detected is preserved and the latest data with all latest names and references is also available; by switching the Reference Context at the right end of the Dose Alert Filters between As at Alert and Latest Values.

Reference Context Switching Option

Adding a new Dose Alert Setting

Dose Alert Settings are accessed from the Dose Alerts Settings list tab accessed from the Setting button at the lower right corner of the Dose Alerts Detected listing. New Dose Alerts Settings are added via the Add button at the lower right corner of the Dose Alert Settings listing:

Reading Filters Dose Application Indicator Icon Dose Collation Indicator Icon

Current Filtered Readings Count Alert μSv Threshold

The naming of Dose Alerts is very important for using the Alerts and in retrieving the detected results. Of significant importance is labelling Pregnancy Alerts with the word Pregnancy (or Breastfeeding) so that they are easier to filter and observe in the list of Dose Alerts detected. A workable convention for naming Dose Alerts is suggested in table n below.

Dose Alert Filters on the left side of the Setting tab match filters appearing in the previous listing tab.

There are numerous fields to consider.

All filters are explained in the Dose Alert Setting Fields table n below.

Changing Dose Alert Settings

Once a Dose Alert Setting has detected and reported results that match its criteria most fields of the Dose Alert Setting can no longer be changed. This is by design. It preserves the Dose Alert Setting criteria for the detected Dose Alerts which are a historical record and result recorded against parameters at that time.

As detailed under Dose Alerts the User can undertake extensive analysis and further recording of causes and follow up actions for a specific Dose Alert. The history of the alert and the setting used at the time are deliberately preserved. So the goal posts cannot be subsequently moved for the same Dose Alert Setting against which detailed analysis of a result has been undertaken.

If a Dose Alert Settings requires changes it can only be modified if it has no results detected otherwise a new Dose Alert Setting needs to be created. Detected results can be deleted as detailed below under Deleting Dose Alerts. The Dose Alert Setting Details tab shows the number of Dose Alerts that have already been detected with the current Setting;

If the Edit button is clicked only the Refresh Cycle and Alert Description can be changed. These fields do not affect prior Dose Alerts detected. The RSO may want to adjust the Alert Description or add notes over time and may want to adjust when future scans are run against the Dose Alert Setting. The following prompt explaining this is displayed:

Dose Alert Setting Fields table

Dose Alert Setting

Definition and Considerations

Dose Alert Name

(Mandatory Field)

The name given to the Dose Alert. The name should be meaningful and give an indication of the main alert settings when it is selected from a list or seen in Wearer’s Alerts tab or reports, Consider using a naming convention such as the following (colour-coded here to emphasize name elements):

Severity Dose Collation Dose Application > Threshold. For example:

RSO Single Body Dose > 5000

Regulatory Annual Body Dose > 20000

Pregnancy Single Body Dose > 0 Include “Pregnancy” if a [Pregnancy Alert]

Scope of alert

(Mandatory Field)

There are two choices for Scope of Alert; System Wide and User Specified

System Wide Alert

System Wide Alerts are intended to remain an ongoing threshold that show a permanent record of any breach of the alert. An example is a Regulatory level that must be observed at all times. Breaches of System Wide Alerts are shown in the Wearer’s Alerts tab.

User Specified Alert

User Specified Alerts are like queries that the RSO makes of the data without leaving a permanent record of the result in the Wearer’s Alerts tab. An example is an Activity Based scan against different Dose Levels based on Wearer Occupation, Site or Business Unit criteria.

Level (Severity)

(Mandatory Field

There are four choices for Level (Severity) which combine with the selection of a Dose Application below, to result in the Appendix 3 Dose Indicator Icons.

Regulatory Level Breach

Regulatory Level Breach Settings scan for any Dose Readings or aggregate totals of Dose Readings that are above jurisdictionally set Legal, Standard, Guideline or Code of Practice thresholds for occupationally exposed individuals and Workplace Safety.

RSO Set Level Breach

RSO Set Level Breach Settings scan for any Dose Readings or totals that are above Organisational (Radiation Safety Committee or RSO comfort) levels that have been locally set to ensure intervention well before a cause of a Regulatory Breach is encountered and are typically a lower Threshold than that set for a Regulatory Breach.

Activity-based Breach

Activity-based Breach Settings scan for targeted Dose Readings or totals of interest to the RSO or other party examining exposure levels typically across Wearer Occupation Groups, Site Locations or other workplace demographic.

Typical or Expected Dose

Typical or Expected Dose is read as a question. Typical or Expected Dose are usually set to zero threshold meaning the setting will scan for the presence of any Dose Readings present which also match any other criteria specified apart from Dose Threshold. Typical or Expected Dose is used to record all Dose Readings for Pregnant Wearers during a Pregnancy Alert period if combined with the Pregnancy Alert tick box.

Dose Application

(Mandated Field)

Dose Applications specify a Monitored Region and allow Dose Readings across different Dosimetry Providers to be standardized into one mathematically consistent model. A Dose Application combined with a Level (Severity) above, result in one of the Appendix 3 Dose Indicator Icons.

A large version of the Dose Indicator Icon that will be displayed in various places throughout Historion where Dose Readings have been detected against the Alert Setting is shown at the top right of the Dose Alert setting tab. The Dose Application selection is mandatory for all Dose Alert Settings.

Filters

Filter

Definition

Occupation Group

(Optional Filter)

The Occupation Group provides an optional filter on ARPANSA Occupation Groups by default. These can be replaced with custom Groups if required for non-APRANSA Historion Customers in the System Settings Lookups tab.

Occupation

(Optional Filter)

The Occupation provides an optional filter on ARPANSA Occupations by default. These can be replaced with custom Occupations if required for non-APRANSA Historion Customers in the System Settings Lookups tab.

Site Location

(Optional Filter)

The Site Location is selectable against each Wearer record if this field is in use, which is set in the System Settings Features tab. Site Location will be a useful filter for Dose Alerts under many location-based monitoring scenarios.

Business Unit

(Optional Filter)

Centre Status

(Optional Filter)

Centre Status is selectable against each Centre. The Centre Status filter allows Dose Readings to be included or excluded from the Dose Alert scan based on whether the Centre is active or inactive. This might be a consideration in a scenario where a Department is closed or merged.

Reporting Centre

(Optional Filter)

Reporting Centre is selectable against each Centre. The Reporting Centre allows Dose Readings to be included or excluded from the Dose Alert scan based on the Centre the Dose Readings are reported under.

This may be different to the Import Centre in scenarios where Dosimetry Providers have changed, and Doses Readings are Reported under a different Centre for purposes of aggregating and reporting.

Import Centre

(Optional Filter)

Import Centre refers to the Centre the Dose Reading was imported under. The Import Centre allows Dose Readings to be included or excluded from the Dose Alert scan based on the Centre Dose Readings were imported under.

This may be different to the Report Centre in scenarios where Dosimetry Providers have changed and Doses Readings are Reported under a different Centre for purposes of aggregating and reporting.

Wearer Status

(Optional Filter)

Wearer Status is selectable against each Wearer and refers to the Monitoring Status of the Wearer. The Wearer Status filter allows Dose Readings to be examined for all Wearers of a given Status.

Wearer

(Optional Filter)

Dose Alerts can be set to scan for results for a specific Wearer. This is an example of a user Specified Alert where an RSO is querying the data in a specific Wearer based scenario.

Readings Present Matching Criteria Selected Above

(Dynamic Total)

This is the Remaining Readings Count as shown in the above diagram. The number provides the number of Dose Readings that are present in the Historion Database that match the filtering criteria currently applied across the filter options on the left side of the Dose Alert Setting Details tab.

If the filters used result in no Dose Readings in the Historion database that match the sum of the filter criteria (they are inclusive) then Historion will prompt with an indication that there are currently no matching Dose Readings for the set of criteria selected.

This doesn’t stop the Dose Alert Setting from being saved, it is a warning only. If a Scan is run using the Setting before any more Dose Readings are imported there will be no results found. If more Dose Readings are imported in the future a scan using the Dose Setting may find results if matching data is then present as a result of a more recent import.

Dose Alert Setting

Definition and Considerations

Wear Period From

(Optional Setting)

Scans using the Dose Setting will ignore Dose Readings where monitoring started prior to this date.

Wear Period To

(Optional Setting)

Scans using the Dose Setting will ignore Dose Readings where monitoring ended after to this date.

Exposure Duration

(Mandatory Field)

Also known as Dose Collation. Refers to the time interval across which Dose Readings are summed for the purposes of examining a Reading Threshold.

The default is Individual Dose which means that the Dose Alert Setting will be used to scan each Dose Reading on its own for a breach of the specified Threshold. All durations other than Individual Dose specify aggregates which mean they examine Dose Reading totals for different windows in time.

Interval Type

(Conditionally Mandated Field)

The Interval Cycle is only relevant to certain selected Exposure Duration (Dose Collation) choices. For example, if Annual Total is selected a choice is provided between Calendar Year and Financial Year Interval Types.

Refresh Cycle

(Mandatory Field)

The Refresh Cycle refers to when Historion will scan for Dose Readings or Dose Reading totals based on the Dose Alert Setting.

Note that the selection After Doses are Imported option against numerous Dose Alert Settings will slow down Dose Importing.

Dose

Annualization

(Mandatory Field)

The Dose Annualization selection refers to the method used to apportion the Dose Readings meeting the criteria of the Dose Alert Setting into the intervals specified by the Dose Alert Setting.

The default (Average daily exposure of Reading apportioned to time interval window) uses the following mathematical model;

1.For the Dose Reading calculate average exposure per day using the Dose Reading Result divided by the no. of days in its Wearing Period.

2.For the time interval (such as a quarter or year) calculate the no. of days of the Dose Reading that fit within the interval in question and multiply that by the above average exposure per day to determine the portion of the Dose Reading attributable to the interval.

The remaining choices include or exclude the whole Dose Reading based on time interval overlap with Wearing Period from and Wearing period to dates.

Limit Any One

Dose

(Mandatory Field)

Individual Dose Reading Threshold used to compare discrete Dose readings that match the combined criteria specified in the Dose Alert Setting Fields and breach the specified limit.

µSv Total of

Dose Limit

(Mandatory Field)

Aggregate Dose Reading Threshold used to compare totals of Dose readings that match the combined criteria specified in the Dose Alert Setting Fields and breach the specified limit in a given Time Interval.

Show Detected Alerts in Wearer Alerts tab

(Optional Setting)

Whether or not results found (Detected Dose Alerts) as detected during scans that use the dose Alert Setting will be shown in the Wearer Alerts tab. The default is True for all System Wide Alerts and False for User Specified Alerts.

Pregnancy Alert

(Optional Setting)

The Pregnancy Alert tick box is an option that interacts with records added via the Wearer Pregnancy Notifications feature. If a Dose Reading falls within or overlaps with the start of end date of a Pregnancy Alerts window, then it will show as an Alert in the Wearer alerts tab.

This is used with the Typical or Expected Dose to show any Dose Readings for Pregnant Wearers where the monitoring occurred within the Pregnancy Alert period specified.

Alert Description

This field is used for any further qualitative description of the Dose Alert, such as legislation the Dose Alert seeks to conform with or the history or origin of the alert. The field might also be used for general notes or considerations from the RSO.