Severnside Siren System

How the siren system came about:

The Severnside Siren System was setup in 1997 following a massive chemical fire at Albright & Wilson Site in Avonmouth, this caused a 100m Plume of Dangerous thick cloud of smoke over the Severn Estuary closing local schools and ceasing rail services and closures of nearby roads. Then in 1997 a Trust was setup by Avon & Somerset police called the Severnside Sirens Trust. Then around April of 1997 the Siren System was installed by SSE and tested in October of 1997 for the first time.

Siren Testing: 

The Siren System is tested on the 3rd of Each Month at 3pm.

the test consists of a 3m Alert Warning Tone, 1m Silence then a 1m All Clear Steady Tone.

the Warning Tone consists of a continuous rising tone followed by a series of pulsing notes.

the All Clear consists of a Low Pitch Continuous Tone.

Sirens: 

The sirens are manufactured by a american company Federal Signal and the sirens are the Modulator & DSA Series. There are 12 Sirens placed across south gloucestershire, Avon County & Somerset.

Siren Locations:

Siren 1: Station Rd, Shirehampton, Bristol, BS11 9XA

Siren 2: Ridingleaze Clinic, Lawrence Weston, Bristol, BS11 0QE

Siren 3: Portishead Fire Station, Station Road, Portishead, BS20 7BZ

Siren 4: Royal Portbury Dock, Avon, Bristol, BS20 7XQ

Siren 5: 1b St Andrew's Rd, Bristol, BS11 9BJ

Siren 6: Portview Rd, Bristol, BS11 9LD

Siren 7: Chittening Rd, Bristol, BS11 0YB

Siren 8: Avlon Works, Severn Rd, Hallen, Bristol, BS10 7ZE (At Front Of Their Plant)

Siren 9: The Surgery, Northwick Road, Pilning, Avon, Pilning, Bristol BS35 4JF

Siren 10: Meadowland Rd, Hallen, Bristol BS10 7PP

Siren 11: The Ship, Down Rd, Portishead, Bristol BS20 8LF (Opposite the Pub on a Telecoms Mast)

Siren 12: Waterside Park, Portishead, Bristol BS20 8LL