API 682 Standard

Did you know that as per API 682 Standard, a single mechanical seal is called Arrangement 1 Seal, a tandem mechanical seal is called Arrangement 2 Seal, and a double mechanical seal is called Arrangement 3 Seal?

SO 12 and 20 liters

API 682 barrier fluid reservoirs for dual mechanical seals

Images

Description

API 682 Plan 52 SO-20 buffer fluid reservoir

SO-3 reservoir is available in API 682 3rd edition 12 and 20 liter versions. The reservoirs can be used with flush plans API 52 or 53A as per API682. To operate under the API 53A Plan, the barrier fluid tank may be equipped with a manual fluid make up pump. A 12 or 20 liter reservoir is chosen depending on pump shaft diameter as required by the API 682 standard.

The reservoirs are fitted with:

- socket welded ANSI B16.11 #800 block valves;

- ASME B16.5 flanges for barrier fluid IN/OUT lines, drain, fluid make-up and vent connections. Connections may be threaded if specified.

The reservoirs can be fitted with instrumentation and control for automatic checking of mechanical seal performance and pump shut down in case of mechanical seal failure. The instrumentation and control may include a level sensor, a pressure switch, and a temperature sensor. Sensors and switches are either intrinsically safe or explosion proof depending on customer’s order.

Brief specifications
Heat exchanger type	Coil, vertical
Design pressure	63 bar
Design temperature	200°C

Example of use: SO 20 Liter Reservoir in API 682 Plan 52

Click to enlarge picture to see the diagram.

Example of use: SO 20 Liter Reservoir in API 682 Plan 53A

Note the manual barrier fluid make-up pump on the right. Click to enlarge picture to see the diagram.

See also:

SO-3 Barrier Fluid Reservoir - The original SO-3 barrier/buffer fluid reservoir (tank) for dual mechanical seals, for seal flush plans API52 and API53A. It is modestly priced and can be used when compliance to API 682 is not required.