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Mechnical Test > Seals > Flashcards

Seals Flashcards

1
Q

What is a barrier fluid?

A

Pressurised therefore will leak into process fluid due to higher pressure than process. Used in applications with dangerous process fluids

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2
Q

What is buffer fluid?

A

Unpressurised therefore process will leak into secondary seal due to product pressure being higher

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3
Q

What is plan 2?

A

Seal faces with product between them with no barrier / buffer

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4
Q

What is plan 11?

A

Stuffing box pressure is boosted from discharge controlled by orifice plate

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5
Q

What is plan 13?

A

Stuffing box pressure is vented to suction pressure held by orifice plate an used for cooling

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6
Q

What is plan 14?

A

11 and 13 combined

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7
Q

What is plan 21?

A

Plan 11 with external cooler from discharge

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8
Q

What is plan 23?

A

Stuffing box recirculated through external cooler

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9
Q

What is plan 52?

A

Unoressurized buffer from accumulator (reseviour)

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10
Q

What is plan 53A?

A

Pressurised barrier form reserviour

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11
Q

What is plan 53B

A

Pressurised barrier from accumulator containing gas bladder

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12
Q

What is plan 53C?

A

Pressurised barrier from piston accumulator

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13
Q

What are the potential leak points?

A

Gland gasket,
Behind both faces,
Along shaft
Across faces

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14
Q

What is a quench?

A

Feds to atmosphere side of seal, cleans away any coking / crystallisation under seal faces

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15
Q

What is a flush?

A

Boost stuffing box pressure cool and clean seal

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Mechnical Test (4 decks)

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