Gas Seal Corss Section_final_

Date: Dec. 19, 2006

CHECK LIST FOR DRY GAS SEAL CROSS SECTIONAL DRAWING FOR CENTRIFUGAL COMPRESSORS

Rev.: 0

LTC-LI-R2-019 Page 1 of

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CHECK LIST FOR DRY GAS SEAL CROSS SECTIONAL DRAWING FOR CENTRIFUGAL COMPRESSOR PACKAGE

0

Preliminary Issue (IFIR)

Rev.

Description

MVP

Written By

SBB

Checked By

TKG

Approved By

Dec.19, 06

Date

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CHECK LIST FOR DRY GAS SEAL CROSS SECTIONAL DRAWING FOR CENTRIFUGAL COMPRESSORS

1. 1.1

DESCRIPTION

CHECKER

SR.

Page 2 of

ENGR.

Rev.: 0

LTC-LI-R2-019

LE/ DM

Date: Dec. 19, 2006

REMARKS

General Check Points Check the Project specific details like Title Block, Project Code, Project Title, Client’s Name, Document Number, Revision Number,

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Project specific Equipment tags Number etc. 1.2 1.3 2

Check for Equipment Package Vendor’s approval stamp for subsuppliers’ document. Revision Mark / Revision identification for changes by vendor Technical Check Points - Dry Gas Seal Cross Sectional Drawing Check the correctness of various technical details related to Dry Gas Seal design data with respect to Seal Datasheet, Project Specifications, and requisition & Agreed Deviation list : i)

Seal operating data,

ii)

Direction of Rotation (Uni-Direction Seal are very sensitive to direction of rotation)

2.1

iii)

Seal axial & radial movement,

iv)

Balancing and test speed,

v)

NACE applicability / compliance of Materials of Construction including that of elastomers. For Wet H2S service Kalrez is used.

2.2 2.3

vi)

Losses in dry gas seal,

vii)

Utility requirement etc.

Check overall dimensional details in seal drawing. Check location and orientation of all ports in Seal Cartridge in line

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with relevant P&ID : i) Seal Gas Supply, ii) Buffer Gas Connection, iii) Separation Gas Connection, L&T - CHIYODA PERSONNEL ONLY L&T - CHIYODA PERSONNEL ONLY L&T - CHIYODA PERSONNEL ONLY

CHECK LIST FOR DRY GAS SEAL CROSS SECTIONAL DRAWING FOR CENTRIFUGAL COMPRESSORS

DESCRIPTION

CHECKER

SR.

Page 3 of

ENGR.

Rev.: 0

LTC-LI-R2-019

LE/ DM

Date: Dec. 19, 2006

REMARKS

iv) And various Vents. 2.4

Check for dry gas seal cartridge weight

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Check for materials in ASTM code and consistency of component part nos. indicated to Dry gas seal drawing Ensure that the material 2.5

of O-ring shall be in total compliance to operating gas as well seal gas i.e. sour gas may call for NACE applicability – Point 2.1 (v) also referred. Check that all connection size like Seal gas supply, Buffer gas

2.6

supply, Separation Gas supply and vent connections are covered as per Compressor supplier’s seal gas P&ID. Check the expected & guaranteed leakage rates for dry gas seal at

2.7

Static and Dynamic Condition from Drive End (DE) and Non-Drive End at various speeds with respect to Seal gas datasheet &

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Compressor Datasheet. Signature

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