[banerj1s]

Jop precise answer … ur my favourite

[banerj1s]

Ikram,

Few more information are required before your question can be answered.
1. What is the operating and design temperature of the pipeline?
2. What is the routing layout of the line?
3 What kind of support are used upstream of the nozzle?
4. Are you planning to take off the bellow permanently or temporarily? If it is a temporary arrangement it should not be much of an issue.

The tank nozzle can be reinforced to take the extra nozzle load. I believe that the expansion bellow is given to take care of the settling issue rather than the force. If the expansion bellow is taken off the line should be rerouted with better flexibility to take care of the settlement but expansion bellow is a better solution.

[banerj1s]

Adding to what Jop said drains near the turbine are according to ASME TDP 1. Normally steam is injected in the turbine at a steady superheat temperature. On a superheated steam flow you have very less chance of water formation in the steam pipe.

Cheers

[banerj1s]

MCW: Main Cooling Water System. Cooling water from Open source or Cooling tower to Surface condenser often called as Circulating Water System (KKS notification PAB)

ACW: Auxiliary Cooling Water System. Cooling water Tap off from Circulating Cooling Water to Closed Cooling Exchanger and back to the Circulating Cooling water. If the head is not enough sometimes you may have a Aux Cooling Pump. (KKS notification PCB).

CCW: Closed Cooling Water System. Cooling water for various lube oil coolers as of Turbine Lube Oil Cooler, BFP Lube Oil Cooler etc and back to the Closed Cooling Water Exchanger. Always have a Close Cooling Water Pump. (KKS notification PGB).

Cheers

[banerj1s]

Did you mean KKS?

[banerj1s]

You can possibly do but you are inviting several other problems. The Nut might not fit. You need a washer that works with the material. The bolt may be needed to be longer. If it is non standard you may be questioned. So get the right bolt!!

[banerj1s]

Hi Sk,

Minimum recirculation line has nothing to do with priming though it does provides a faster FW pump startup. The priming is automatically obtained as the Deaerator is in the higher level which provides flooded suction. The minimum recirculation line is provided with ARC (automatic recirculation valve) so that the Feedwater Pump operate within stable region of the HQ curve. This is entirely for the safety of the pump.
Orifice is provided for minimum flow line for flow measurement. The flow signal shall be used to adjust the discharge control valve of the FW pump. There is a considerable pressure drop also. Normally the Orifice is at the downstream of the ARC.

Cheers

Sudipto

[banerj1s]

I agree with Bob that B31.3 does provide guidance on Formal Stress Analysis criteria but it stops short of specifying what should be the temperature or size where a formal analysis is required. So the minimum temperature as covered by B31.3 is as per Table A-1 which is the minimum temperature for the material. However for analysis below 29 deg C the analysis is in cryogenic zone that requires special considerations. Normally the allowable stress range is reduced to 50% of that calculated in B31.3 to ensure that there is no chance of brittle fracture in the welds on the first cool down to the sub-zero temperature.
So in short the answer is no.

[banerj1s]

I would appreciate this video because it does show an erection sequence and are excellent tools to impress the client.
It is important to understand that such a video is actually a product of the 3D views from PDS and PDMS sequenced together to make a movie. In the recent versions of Smart Plant Review it is possible to create such a movie and no special softwares are needed. Surely they dont throw dusts but creates a movie well enough to create an impression.
So to answer your question 11echo we dont need a budget to create such a movie. We created several such presentations for sales group to make an impression at their presentations. These presentations are never a part of the deliverable but the cost of creating one is adjusted in the project budget.
But I do agree that 3D programs do not make good pipers, experience does. But surely it makes the pipers job a lot easier.

Cheers

[banerj1s]

Do you mean heater drain system? Deaerator normally blows down to atmospheric tank. The line doesnt need a steam trap.
Also the same for overflow line. Deaerator has a level control system. This is a critical control point or trip level control point. I am not sure if overflow line is required. If it is a coal plant there shall be a heater drain system which will relieve the water to cascading drain system.

Cheers

[banerj1s]

I guess you refer to Condensate Extraction Pump (CEP) for power plants. CEP are used to pump water from Condenser Hotwell to the Steam Water Cycle for Power Plants. The elevation of the hotwells are normally very low for a horizontal pumps to gain enough suction head. The reason is to economize the height of the turbine foundation and thereby the TG building height. So the condenser hotwell normally goes in a pit and vertical pumps best suited for the purpose as they need minimum height.

Cheers

[banerj1s]

The manufacturer may be the best person to answer that question. Normally you may need to access the valve twice or once a year.
For quick closing valves look out for water hammer effect.

[banerj1s]

Hello,
I have encountered a situation where there was a coal gasification line but it was overground. I would recommend API 5L GrB as normally these lines are 16″ and above. I see no reason why that may change if the line is buried.

Regards

[banerj1s]

Paulo,

What kind of services are you concerned with. If it is water services and comes under AWWA then you can refer to AWWA C208.

Cheers

[banerj1s]

Paulo,

What kind of services are you concerned with. If it is water services and comes under AWWA then you can refer to AWWA C208.

Cheers

[Author]

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