Severnside Sirens Trust Limited is the organisation responsible for maintaining the system. It is a registered company (number 3348008) and charity (number 1063224)[5] and was incorporated on 9 April 1997.[6] The trust's activities are funded by the 3 local authorities whose constituents the sirens serve, North Somerset Council, Bristol City Council, and South Gloucestershire Council, and from donations from the organisations running the COMAH sites themselves.
The sirens are tested at 1500 on the 3rd of every month. The test comprises the following:[9]
3 minutes of the alert warning (a continuous, stepped, rising tone)
1 minute of silence
1 minute of the all clear siren (a continuous constant tone)
Local volunteers monitor the sirens on test day.[10]
References
^"SEVERNSIDE SIRENS TRUST Ltd Report and Financial Statements Year Ended 31 March 2014" (PDF). Charities Commission. 31 March 2014. Retrieved 4 September 2019.
^"Severnside Sirens Safety Advice" (PDF). North Somerset Council. Retrieved 3 December 2020.
^"The Fire at Albright and Wilson, Avonmouth. 3rd October 1996". www.hse.gov.uk. Retrieved 4 September 2019.
^Pickstock, Heather (8 August 2017). "There is a glitch with Bristol's emergency warning siren". bristolpost. Retrieved 4 September 2019.
^"Charity Details". beta.charitycommission.gov.uk. Retrieved 4 September 2019.
^"Severnside Siren System" (PDF). Retrieved 9 May 2023.
^"Emergency siren network expanded". 3 July 2013. Retrieved 4 September 2019.
^"Hazardous Chemicals and Control of Major Accident Hazards (COMAH) - bristol.gov.uk". www.bristol.gov.uk. Retrieved 4 September 2019.
^"SEVERNSIDE SIRENS TRUST LIMITED Report and Financial Statements Year Ended 31 March 2018" (PDF). Charities Commission. 31 March 2018. Retrieved 4 September 2019.
External links
Severnside Sirens Trust - the charitable organisation responsible for running the system