128 / 227
Inter Terminals Ltd. - Tyne Terminal
Tank 24 Road Loading Overspill System – I.S. Calculation
P & I Design Ltd
DOCUMENT NO: 16115CAL001
2 Reed Street, Thornaby, UK, TS17 7AF
ISSUE: A
Tel: + 44 (0) 1642 617444
DATE: 02/02/17
Fax: + 44 (0) 1642 616447
PAGE: Page 4 of 8
www.pidesign.co.uk1
INTRODUCTION
This calculation has been produced in accordance with the requirements of BS EN 60079.
This calculation has been produced on the basis of all new cabling being installed and thus
utilising BS 5308 standard instrument cable.
2
SCOPE
This calculation applies to two sensors, both connected to junction box FJB27, which
receives power from a switch amplifier isolator, ensuring the loops are intrinsically safe.
These sensors together make a high-level detection system for road tanker filling. An
inductive sensor detects that the filling arm has been correctly inserted onto the road tanker
and a capacitive sensor detects when the high level in the road tanker has been reached.