Radon in the air - Revision history

Ajhil: /* Monitoring near the Preston New Road site */

2026-05-13T09:21:07Z

Monitoring near the Preston New Road site

← Older revision		Revision as of 10:21, 13 May 2026
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	The distribution parameters for the five monitoring periods are given in [[Radon in the air#Data tables\|Table 3]]. The first four monitoring periods were three months, while the fifth period was six months. The average Rn concentrations measured over the five monitoring periods were in the range 2 to 9 Bq m<sup>-3</sup>.		The distribution parameters for the five monitoring periods are given in [[Radon in the air#Data tables\|Table 3]]. The first four monitoring periods were three months, while the fifth period was six months. The average Rn concentrations measured over the five monitoring periods were in the range 2 to 9 Bq m<sup>-3</sup>.

	Ten passive monitors were also placed at the same location. The average Rn concentrations measured using the passive detectors were similar to the arithmetic means (AM) of the distributions measured with the AlphaGUARD for these periods, as shown in Table 3.		Ten passive monitors were also placed at the same location. The average Rn concentrations measured using the passive detectors were similar to the arithmetic means (AM) of the distributions measured with the AlphaGUARD for these periods, as shown in [[Radon in the air#Data tables\|Table 3]].

	Time series of the measured Rn without background correction are given in Figure 6. The results show that there are variations in the hourly concentrations measured at the site, however the overall average Rn concentrations agrees well with the results of the passive detectors from the same location.		Time series of the measured Rn without background correction are given in Figure 6. The results show that there are variations in the hourly concentrations measured at the site, however the overall average Rn concentrations agrees well with the results of the passive detectors from the same location.

Ajhil: /* Monitoring near the Preston New Road site */

2026-05-13T09:20:08Z

Monitoring near the Preston New Road site

← Older revision		Revision as of 10:20, 13 May 2026
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	[[Image:Fig6_Time_Series_Radon.jpg\|frameless\|center\|500px\|]]		[[Image:Fig6_Time_Series_Radon.jpg\|frameless\|center\|500px\|]]

	<center>'''Figure 6'''   &~~nbspTime~~ series of Rn concentrations as recorded by the AlphaGUARD. BGS © UKRI.</center>		<center>'''Figure 6'''    Time series of Rn concentrations as recorded by the AlphaGUARD. BGS © UKRI.</center>

	==Summary==		==Summary==

Ajhil: /* Monitoring near the Preston New Road site */

2026-05-13T09:19:19Z

Monitoring near the Preston New Road site

← Older revision		Revision as of 10:19, 13 May 2026
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	Time series of the measured Rn without background correction are given in Figure 6. The results show that there are variations in the hourly concentrations measured at the site, however the overall average Rn concentrations agrees well with the results of the passive detectors from the same location.		Time series of the measured Rn without background correction are given in Figure 6. The results show that there are variations in the hourly concentrations measured at the site, however the overall average Rn concentrations agrees well with the results of the passive detectors from the same location.

	~~Time series of radon concentrations as recorded by the AlphaGUARD~~.		[[Image:Fig6_Time_Series_Radon.jpg\|frameless\|center\|500px\|]]
	~~Information icon~~
	Figure 6 ~~Time~~ series of Rn concentrations as recorded by the AlphaGUARD. BGS © UKRI.		<center>'''Figure 6'''   &nbspTime series of Rn concentrations as recorded by the AlphaGUARD. BGS © UKRI.</center>

	==Summary==		==Summary==

Ajhil: /* Monitoring near the Preston New Road site */

2026-05-13T09:17:53Z

Monitoring near the Preston New Road site

← Older revision		Revision as of 10:17, 13 May 2026
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	Measurements of Rn in outdoor air were made close to the Preston New Road site. Continuous measurements were made using an active monitor called AlphaGUARD.		Measurements of Rn in outdoor air were made close to the Preston New Road site. Continuous measurements were made using an active monitor called AlphaGUARD.

	The data from the AlphaGUARD for the period March 2017 to September 2018 was analysed. The inherent background reading of the instrument of 2 Bq m-3, resulting from the longer half-life, alpha-emitting radionuclides, was taken into account when the data was processed. The Rn data, which was taken at one-hour intervals, was log-normally distributed.		The data from the AlphaGUARD for the period March 2017 to September 2018 was analysed. The inherent background reading of the instrument of 2 Bq m<sup>-3</sup>, resulting from the longer half-life, alpha-emitting radionuclides, was taken into account when the data was processed. The Rn data, which was taken at one-hour intervals, was log-normally distributed.

	The distribution parameters for the five monitoring periods are given in [[Radon in the air#Data tables\|Table 3]]. The first four monitoring periods were three months, while the fifth period was six months. The average Rn concentrations measured over the five monitoring periods were in the range 2 to 9 Bq m-3.		The distribution parameters for the five monitoring periods are given in [[Radon in the air#Data tables\|Table 3]]. The first four monitoring periods were three months, while the fifth period was six months. The average Rn concentrations measured over the five monitoring periods were in the range 2 to 9 Bq m<sup>-3</sup>.

	Ten passive monitors were also placed at the same location. The average Rn concentrations measured using the passive detectors were similar to the arithmetic means (AM) of the distributions measured with the AlphaGUARD for these periods, as shown in Table 3.		Ten passive monitors were also placed at the same location. The average Rn concentrations measured using the passive detectors were similar to the arithmetic means (AM) of the distributions measured with the AlphaGUARD for these periods, as shown in Table 3.

Ajhil: /* Results from the monitoring (March 2017 to September 2018) */

2026-05-13T09:16:46Z

Results from the monitoring (March 2017 to September 2018)

← Older revision		Revision as of 10:16, 13 May 2026
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	The estimated average Rn concentrations at each sampling point in the areas around Little Plumpton and Woodplumpton are presented in Figures 5a and 5b.		The estimated average Rn concentrations at each sampling point in the areas around Little Plumpton and Woodplumpton are presented in Figures 5a and 5b.

	Figure 5: Average radon concentrations at the sampling points around Little Plumpton.		[[Image:Fig5a_Radon_LittlePlumpton.jpg\|frameless\|center\|500px\|]]
	Figure 5: Average ~~radon~~ concentrations at the sampling points around ~~Little Plumpton~~.
			<center>'''Figure 5a'''    Average radon concentrations at the sampling points around Little Plumpton. BGS © UKRI.</center>

			[[Image:Fig5b_Radon_Woodplumpton.jpg\|frameless\|center\|500px\|]]

			<center>'''Figure 5b'''    Average Rn concentrations at the sampling points around Woodplumpton. BGS © UKRI.</center>

	==Monitoring near the Preston New Road site==		==Monitoring near the Preston New Road site==

Ajhil: /* Outdoor radon monitoring */

2026-05-12T10:53:45Z

Outdoor radon monitoring

← Older revision		Revision as of 11:53, 12 May 2026
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	Passive Rn monitors, very similar to those used routinely in homes, were placed in small aluminium-wrapped plastic pots in discreet but open-air locations for three months or longer. The outdoor Rn monitoring pack and placement of detectors are shown in Figure 3.		Passive Rn monitors, very similar to those used routinely in homes, were placed in small aluminium-wrapped plastic pots in discreet but open-air locations for three months or longer. The outdoor Rn monitoring pack and placement of detectors are shown in Figure 3.

	[[Image:~~environbaselinemonitoringvideo~~.jpg\|frameless\|center\|500px\|]]		[[Image:Placement of PHE.jpg\|frameless\|center\|500px\|]]

			<center>'''Figure 3'''    Placement of PHE outdoor Rn monitoring pack. BGS © UKRI.</center>
	~~PlacementOfOutdoorDetectors~~
	~~Information icon~~
	Figure 3 Placement of PHE outdoor Rn monitoring pack. BGS © UKRI.

	==Results from the monitoring (March 2017 to September 2018)==		==Results from the monitoring (March 2017 to September 2018)==

Ajhil: /* Outdoor radon monitoring */

2026-05-12T10:50:27Z

Outdoor radon monitoring

← Older revision		Revision as of 11:50, 12 May 2026
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	Passive Rn monitors, very similar to those used routinely in homes, were placed in small aluminium-wrapped plastic pots in discreet but open-air locations for three months or longer. The outdoor Rn monitoring pack and placement of detectors are shown in Figure 3.		Passive Rn monitors, very similar to those used routinely in homes, were placed in small aluminium-wrapped plastic pots in discreet but open-air locations for three months or longer. The outdoor Rn monitoring pack and placement of detectors are shown in Figure 3.

			[[Image:environbaselinemonitoringvideo.jpg\|frameless\|center\|500px\|]]


	PlacementOfOutdoorDetectors		PlacementOfOutdoorDetectors

Ajhil: /* Monitoring near the Preston New Road site */

2026-05-12T10:49:06Z

Monitoring near the Preston New Road site

← Older revision		Revision as of 11:49, 12 May 2026
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	The data from the AlphaGUARD for the period March 2017 to September 2018 was analysed. The inherent background reading of the instrument of 2 Bq m-3, resulting from the longer half-life, alpha-emitting radionuclides, was taken into account when the data was processed. The Rn data, which was taken at one-hour intervals, was log-normally distributed.		The data from the AlphaGUARD for the period March 2017 to September 2018 was analysed. The inherent background reading of the instrument of 2 Bq m-3, resulting from the longer half-life, alpha-emitting radionuclides, was taken into account when the data was processed. The Rn data, which was taken at one-hour intervals, was log-normally distributed.

	The distribution parameters for the five monitoring periods are given in Table 3. The first four monitoring periods were three months, while the fifth period was six months. The average Rn concentrations measured over the five monitoring periods were in the range 2 to 9 Bq m-3.		The distribution parameters for the five monitoring periods are given in [[Radon in the air#Data tables\|Table 3]]. The first four monitoring periods were three months, while the fifth period was six months. The average Rn concentrations measured over the five monitoring periods were in the range 2 to 9 Bq m-3.

	Ten passive monitors were also placed at the same location. The average Rn concentrations measured using the passive detectors were similar to the arithmetic means (AM) of the distributions measured with the AlphaGUARD for these periods, as shown in Table 3.		Ten passive monitors were also placed at the same location. The average Rn concentrations measured using the passive detectors were similar to the arithmetic means (AM) of the distributions measured with the AlphaGUARD for these periods, as shown in Table 3.

Ajhil: /* Results from the monitoring (March 2017 to September 2018) */

2026-05-12T10:48:27Z

Results from the monitoring (March 2017 to September 2018)

← Older revision		Revision as of 11:48, 12 May 2026
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	The aluminium-wrapped plastic pots placed at each sampling point initially contained four three-month and four one-year passive detectors to record Rn concentrations. The detectors were replaced and processed following the standard procedures during the monitoring period. Some of the sites around Woodplumpton were vandalised, with pots or detectors missing. No data was reported for some of the periods at these sites.		The aluminium-wrapped plastic pots placed at each sampling point initially contained four three-month and four one-year passive detectors to record Rn concentrations. The detectors were replaced and processed following the standard procedures during the monitoring period. Some of the sites around Woodplumpton were vandalised, with pots or detectors missing. No data was reported for some of the periods at these sites.

	Aggregated results for outdoor monitoring from the four three-month measurement and one six-month period, including the one-year test, are given in Table 2. The analysis of the detectors for these periods indicates that the average Rn levels were similar around the Little Plumpton area and the Woodplumpton area.		Aggregated results for outdoor monitoring from the four three-month measurement and one six-month period, including the one-year test, are given in [[Radon in the air#Data tables\|Table 2]]. The analysis of the detectors for these periods indicates that the average Rn levels were similar around the Little Plumpton area and the Woodplumpton area.

	The results are similar to those measured in previous studies (Wrixon et al., 1988). The results for the three-month for both areas show low Rn levels and are close to the detection limit for the passive Rn detection technique.		The results are similar to those measured in previous studies (Wrixon et al., 1988). The results for the three-month for both areas show low Rn levels and are close to the detection limit for the passive Rn detection technique.

Ajhil: /* Results from the five three-month periods (May 2017 to August 2018) */

2026-05-12T10:47:29Z

Results from the five three-month periods (May 2017 to August 2018)

← Older revision		Revision as of 11:47, 12 May 2026
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	Each test consists of PHE’s standard pack of two passive detectors that are placed in an occupied bedroom and living area for three months. Indoor Rn was monitored over the length of this study in the selected houses. Each participant received several three-month packs. In addition, each home received detectors to carry out monitoring for a longer, continuous period.		Each test consists of PHE’s standard pack of two passive detectors that are placed in an occupied bedroom and living area for three months. Indoor Rn was monitored over the length of this study in the selected houses. Each participant received several three-month packs. In addition, each home received detectors to carry out monitoring for a longer, continuous period.

	Results from the reported annual average Rn concentrations estimated from the five three-month back-to-back tests in homes were analysed and are presented in		Results from the reported annual average Rn concentrations estimated from the five three-month back-to-back tests in homes were analysed and are presented in [[Radon in the air#Data tables\|Table 1]]. The annual average Rn concentrations were calculated employing seasonal correction factors as outlined in the PHE validation scheme (Howarth and Miles, 2008). Distribution parameters were calculated for each area, assuming log–normality. The results for the homes around Little Plumpton, Roseacre Wood and Woodplumpton are consistent with the expected low Rn potential for this area.

	[[Radon in the air#Data tables\|~~"see"~~ Table 1]]

	~~Table 1~~. The annual average Rn concentrations were calculated employing seasonal correction factors as outlined in the PHE validation scheme (Howarth and Miles, 2008). Distribution parameters were calculated for each area, assuming log–normality. The results for the homes around Little Plumpton, Roseacre Wood and Woodplumpton are consistent with the expected low Rn potential for this area.

	==Outdoor radon monitoring==		==Outdoor radon monitoring==