7/29/2019 mechnical equip Acceptance Criteria.xls

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Equipment Inspection Acceptance Criteria

Equip. Cat.Para

NoParameter to measure Crit. No

Pressure vessels 1 Wall thickness 1

(In general) 2

2 Diff. pressure across the vessel 1

Heat Exchangers , 1 Loss of diff. temp. 1

Coolers and Fin Fan

Coolers

2 Diff. pressure or temp. 1

Filters 1 Diff. pressure across the vessel 1

Fired heaters 1 Casing skin temp. 1

2 Tube skin temp., TST 1

3 Stack Gas outlet temp. 1

Machinery 1 Vibraion level 1

Piping 1 Wall thickness 1

Valves 1 Leakage past 1

All equipment 1 Process performance 1

Notes

Specific limits to be set for each equipment depending on its design parameters and operating parameters/conditions

Production Staff input needed to minimize unspection/cleaning costs/downtimes within the availability requirments.

Rev 2 Date 26-Feb-04 Page 1 of 1

Date:

WEPCO Approval:

First Engineering & Software Systems

Originator:

First Engineering & Software Systems

If the pressure, temperature, flowrate, process quality or any other

deteriorates below certain limits, equipment to Isolated and truned acleaned etc.

If vibration speed limit exceeded

Same as pressure vessels

If valves shows leakage (detected by UT or other techniques.

If casing sin temp. exceeds specifiied design limit

If TST exceed design limits

If the percentage of tubes plugged due to leakage, piching or cracki

If stack gas outlet temp. exceed limits

If either Delta P or Delta T exceeds limits

If delta P across the vessel exceeds the allowable limit

Criteria

If current wall thickness (WT) is less than design WT

If remaining life calculations give a WT less than design wall thicknes

Maintenance &Inspection WorkInstruction

If delta P across the vessel exceeds the allowable limit

7/29/2019 mechnical equip Acceptance Criteria.xls

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Equipment Inspection Acceptance Criteria

Equip. Cat. Para Parameter to measure Crit. Criteria

No No.

Pressure vessels 1 Wall thickness 1 If current wall thickness (WT) is less than design WT

(In general) 2 If remaining life calculations give a WT less than design wall thickness

2 Diff. pressure across 1 If delta P across the vessel exceeds the allowable limit

the vessel

Heat Exchangers , 1 Loss of diff. temp. 1 If the percentage of tubes plugged due to leakage, piching or cracking

Coolers and Fin Fan

2 Diff. pressure or temp. 1 If either Delta P or Delta T exceeds limits

Filters 1 Diff. pressure across 1 If delta P across the vessel exceeds the allowable limitthe vessel

Fire heaters 1 Casing skin temp. 1 If casing sin temp. exceeds specifiied design limit

2 Tube skin temp., TST 1 If TST exceed design limits

3 Stack Gas outlet temp. 1 If stack gas outlet temp. exceed limits

Machinary 1 Vibraion level 1 If vibration speed limit exceeded

Piping 1 Wall thickness 1 Same as pressure vessels

Valves 1 Leakage past 1 If valves shows leakage (detected by UT or other techniques.

All equipment 1 Process performance 1 If the pressure, temperature, flowrate, process quality or any other

performance parameter deteriorates below certain limits, equipment to

Isolated and truned around (overhauled, cleaned etc.)

Notes

Specific limits to be set for each equipment depending on its design parameters and operating parameters/conditionsProduction Staff input needed to minimize unspection/cleaning costs/downtimes within the availability requirments.

7/29/2019 mechnical equip Acceptance Criteria.xls

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Equip. Cat. Para Parameter to measure Crit. Criteria

No No.

Pressure vessels 1 Wall thickness 1 If current wall thickness (WT) is less than design WT

(In general) 2 If remaining life calculations give a WT less than design wall thickness

2 Diff. pressure across 1 If delta P across the vessel exceeds the allowable limit

the vessel

Heat Exchangers , 1 Loss of diff. temp. 1 If the percentage of tubes plugged due to leakage, piching or cracking

Coolers and Fin Fan

2 Diff. pressure or temp. 1 If either Delta P or Delta T exceeds limits

Filters 1 Diff. pressure across 1 If delta P across the vessel exceeds the allowable limit

the vessel

Fire heaters 1 Casing skin temp. 1 If casing sin temp. exceeds specifiied design limit

2 Tube skin temp., TST 1 If TST exceed design limits

3 Stack Gas outlet temp. 1 If stack gas outlet temp. exceed limits

Machinary 1 Vibraion level 1 If vibration speed limit exceeded

Piping 1 Wall thickness 1 Same as pressure vesselsValves 1 Leakage past 1 If valves shows leakage (detected by UT or other techniques.

All equipment 1 Process performance 1 If the pressure, temperature, flowrate, process quality or any other

performance parameter deteriorates below certain limits, equipment to

Isolated and truned around (overhauled, cleaned etc.)

7/29/2019 mechnical equip Acceptance Criteria.xls

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Rev 2 Date 26-Feb-04 Page 1 of 1 Task code: MX0503M378

First Engineering & Software Systems Date:

Originator: WEPCO Approval: