I have uploaded feed water heater presentationFull description
contoh makalahFull description
HEI Feed Water Heater
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Descripción: This document shows how to create a solar batch water heater.
Laporan Perpindahan Panas Radiasi pada Solar Water HeaterDeskripsi lengkap
Laporan Perpindahan Panas Radiasi pada Solar Water HeaterDeskripsi lengkap
Laporan Perpindahan Panas Radiasi pada Solar Water HeaterFull description
Heater, prinsip kerjanya, serta peran aktif atau aplikasinya dlm kehidupan
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Overview • Wha Whatt is a Water Water Bath Bath Heate Heater? r? • My Pro Projec jectt – He Heat ater er H-0 H-03 3 Hors Horsley ley Pa Park rk • Qu Ques esti tion ons s
2
Overview • Wha Whatt is a Water Water Bath Bath Heate Heater? r? • My Pro Projec jectt – He Heat ater er H-0 H-03 3 Hors Horsley ley Pa Park rk • Qu Ques esti tion ons s
2
Purpose of Water Bath Heaters In The • Widely used used throughout throughout the natural natural gas industr industry y as an econom ca me o or ea ng na ura gas • Impor Important tant to heat heat natural natural gas for the the following following reasons: reasons: – Avoids pipeline cracking after pressure regulation – – Minimum Contractual temperature requirements – Critical E ui ment re uirements
3
Key Components of a Water Bath Heater Insulated Shell
rocess o (Gas Flow)
Fire Tube (Heat Source)
Control System Devco Process Heaters http://www.devcoheaters.com/indirect.htm Source:
4
Water Bath Heater Operating Principles
Gas Out
Heated Water
Devco Process Heaters http://www.devcoheaters.com/indirect.htm Source:
5
Water Bath Heater H-03 •
ors ey
ar
e er
a on
• Eastern Gas Pipeline • – 10 m long – 2.7 m diameter
• Heating capacity of 1,200 kW • Maintains gas temperature at a rox 30°C
6
Water Bath Heater H-03 •
a on as
ree un s
– H-03 is the largest
• Critical source of su l for Sydney distribution network – Up to 1M Customers
• of heaters • H-03 needs to be offline during the inspection
7
Pro ect Constraints • Customer – Gas delivery temperature was not to be below minimum allowable – Ensure no impact on the Sydney distribution network.
• – History of damage with other units – Needed to be completed by 2011 to be compliant with AS2885
8
Pro ect Pre aration • Capacity study – Conducted process modelling – Actual testing (i.e. isolating the heater on-site) –
– March – Low demand, warm ground temperature – Schedule develo ed for March ro ect deliver – Planned over a weekend (reduced demand)
9
Pro ect Pre aration Cont. • Development of Project Plan –
ec ves, scope, u ge , resources e c.
• Risk Assessment – – Lifting above live pipe work – Confined space entry – oss e amage o process co
• Development of Procedures – – Safe Work Method Statements – Development of a Contingency Plan
10
Pro ect Pre aration Cont. • Organising Contractors – – – – –
rane pera ors an ogmen NDT personnel Water collection High Pressure cleaners Welders
All contractors were appropriately accredited – – Welding certification – NATA certified
11
Pro ect Pre aration Cont. • Review of mechanical design
Clearance
12
Develo in the Contin enc Plan • Additional spare process coil was procured in case of a rep acemen . • Standby welding workshop organised • Standby truck to transport the coil bundle for repair • Appropriate waste management plans in place
13
Developing the Contingency Plan (Cont.) •
re- es gne an
a r ca e
• Angled attached to baffle – Scallo ed around the rocess coil – 2 mm clearance around the rocess coil
• Design reviewed by manufacturer –
m ar o curren mec an sm n place
14
Pro ect Timin • Estimated completion time was 4 days – 2 additional days contingency for repairs
15
Pre-Work Plannin •
ng p an was agree Crane operators.
ow
• Heav dut Scaffoldin set u over live pipe work • New bolts and gaskets procured •
ew en p a e gas e pre- r e
16
Performin the Ins ection
• Heater isolation • – Liquids were collected in isolated tanks
•
emova o anc ary p p ng
• Removal of spools
Day 1
Day 2
Day 3
Day 4 17
Performin the Ins ection Cont.
• Unbolting of vessel endplate • – 110 T Crane – 60 T Franner
Day 1
Day 2
Day 3
Day 4 18
Performin the Ins ection Cont.
• Lifting of bundle above pipe work • Left to rest on stands away from hazardous area
Day 1
Day 2
Day 3
Day 4 19
Performin the Ins ection Cont. •
g pressure c ean ng o process coil bundle
e
• Hi h ressure cleanin of the inside of the vessel
Day 1
Day 2
Day 3
Day 4 20
Performin the Ins ection Cont. •
on es ruc ve es ng o process coils.
e
– Ensure wall thickness was within the minimum allowable
Ke Issue: Process Coil Contact • Rubbing across 150 mm of the • Deepest pit found to be 1.4 mm leaving 7.0 mm • Minimum allowable wall thickness calculated as 5.0 mm –
–
Deepest Pit 1.4 mm
2006: Pressure Piping
Day 1
Day 2
Day 3
Day 4 22
Key Issue: Process Coil Contact (Cont.)
Process Coil Bundle
Fire Tub e Fire Tub e
Day 1
Day 2
Day 3
Day 4 23
Process Coil Protection • Angle piece scalloped around process coil
Day 1
Day 2
Day 3
Day 4 24
Process Coil Protection Cont. • Welded to other side of baffle
Day 1
Day 2
Day 3
Day 4 25
Performin the Ins ection Cont. • Once modification was complete, inspector deemed comp an
Day 1
Day 2
Day 3
Day 4 26
Reassemblin the Heater
• Crane lifted coils back into vessel
Day 1
Day 2
Day 3
Day 4 27
Reassemblin the Heater Cont.
• Replacement of endplate gasket •
-
• Reattachment of ancillaries and connecting pipe work • Leak tested vessel and flanges • Vessel was refilled
Day 1
Day 2
Day 3
Day 4 28
Reinstatement of Heater
• Heater left offline overnight • • Monitored • Returned to service
Day 1
Day 2
Day 3
Day 4 29
Pro ect Success • No lost time due to injuries • No impact on customer deliveries or capacity • Delivered within the 4 day timeframe • Delivered within the allocated budget • Heater remains compliant with Standards – AS 2885 – AS 3788
30
Ke Learnin s • Accurate project schedule – Important! • Crane lifting plan was critical • Predrilled endplate gaskets • Review drawings! • Having a contingency plan in place – Key!
