What is mechanical seal flushing plan?
A flush plan is a strategic equipment arrangement that circulates fluid to or from the seal chamber in order to maintain proper lubrication, pressure, temperature, and solids management. The goal is to create an ideal work environment for the seal in order to avoid wear and failures, thus prolonging its useful life.
What is API plan 62?
API Plan 62 delivers an external quench fluid to the atmospheric side of the seal. A typical application in a refinery is the prevention of coking on seal faces in hot hydrocarbon service by employing a steam quench. Nitrogen or clean water may also be used to quench or cool and clean the atmospheric side of the seal.
What is API plan 32?
API Plan 32 delivers a clean flush fluid into the seal chamber from an external source. Typically used with a close-clearance throat bushing, this arrangement can be used to ensure a higher pressure in the seal chamber.
What is API plan 23?
API Plan 23 utilizes a circulation device, typically a pumping ring, to route the fluid from the seal chamber through a cooler before returning the cooled fluid to the seal chamber. A throat bushing isolates the cooled seal chamber flush fluid from the hotter pumped liquid.
What is API plan 11?
API Plan 11 recirculates flow from a highâpressure section of the pump, typically the discharge piping, through a flow control orifice to the seal. Plan 11 is the default flush plan for most pumps. API Plan 11.
What is API plan 13?
Plan 13 is self-venting. Relieves pressure in the seal chamber. A distributed flush is not recommended for this plan. Plan 13 can be used in combination with Plan 11 (Plan 14).
What is API plan 52?
API Seal Plan 52 utilizes a reservoir and circulates an unpressurized buffer fluid between the inboard and outboard seals. Seal Plan 52 is commonly used with light hydrocarbons or fluids with a high vapor pressure.
How many types of seal plans are there?
Single Seal Piping Plans. Piping plans for single seal systems include Plans 01, 02, 03, 11, 13, 14, 21, 23, 31, 32, and 41.
What is API seal plan?
These are standardized flushing piping arrangements that are widely used in the industry. Customer specific variants of these plans are possible. API Piping plans help to ensure good conditions for mechanical seal operation as well as improving safety and pump reliability.
How does the seal 52 plan work?
API Seal Plan 52 utilizes a reservoir and circulates an unpressurized buffer fluid between the inboard and outboard seals. To provide positive circulation through the support system and into the seal, a pumping ring is employed.