Hi,
Anyone got any info regarding the fastest delivery period of 25MW GTG? Was informed that at present due to increase work load/order all around the world, the delivery period has increased. Example, last year when we placed the order for 4 GTGs, the delivery period was only 12 months. Now...
Hi,
Anyone got experience with regards to the installation of bypass stack between GTG and HRSG. What are the pros and cons on having this bypass stack.
I was informed by the HRSG vendor that nowadays about 90% of their installation is without bypass stack.
Thanks
norzul
Hi,
In 4 to 6 months time we are planning to commission 4 GTGs (F5 size) and 4 HRSGs (95 t/h with supplementary firing). Our gas turbine is closed coupled with the HRSG without the bypass stack i.e. if GTG down, HRSG will also down, vice versa.
I was informed that due to not having a bypass...
Hi Guys,
I'm currently involved with the cogeneration project. Now under construction phase. We're going to install 4 GTG and 1 STG. Our GTG got the supply of NG for the national grid.
Each GTG has its own fuel gas skid consists of filters, dual SSOV (safety shut-off valve) and pressure...
Hi,
We have 4 gas turbines for our cogen project. Now under construction phase. Our spec is epoxy grout. The eqpt supplier recommend non-shrink cement based grout.
Any opinion?
Thanks
NORZUL
Hi Guys,
Quite recently, we had a turbine blade broken during the no load mechanical running test (NLMRT) at supplier factory, prior to shipment to site.
The supplier standard practice is the followings:
1) After fabrication/machining of the blade, a 100% magnetic particle test (MPT) will be...
Hi Guys,
Anyone got any previous experiences pertaining to the no load mechanical running test for the STG?
Is it a common practice not to carry out the NLMRT for the STG (Steam Turbine Generator) as part of the purchase requirement?
Thanks
norzul
Hi Guys,
We plan to install 3 circulating cooling water pump (from cooling tower) for our cogen project.
Initial Spec
1) 4800 m3/hr
2) 47m
3) Double volute
4) 740 rpm
5) 680 kW
However, due to process optimization, the head was reduced to 36m. Because of this the supplier requested changes...
Hi Guys,
Anyone got something to share on the protection of the underground (UG) piping?
For our project, based on the specification, the UG piping (firewater line and oily water sewer line) needs to be coated and wrapped. We had a meeting this morning & somebody mentioned that it is either...
Hi,
Is it common to have API 5L B (without galvanised) for the instrument piping material?
Based on my previous experience it should be pre-galvanised, however on my current project it is specified as API 5L B without galvanised?
Any advise
Thanks
norzul
Hi,
Any experience to share on retrofiting of seal oil system to Dry Gas Seal (DGS) for the recycle gas compressor (200bar discharge) for the hydrocraker unit?
Thanks
norzul
Hi,
We just procured 4 HRSGs for our cogen project. It has supplementary firing (SF) capabilities. Without firing the production is about 50 ton/hr. With SF, 95 t/h. The ramping rate is 15 ton/hr per minute. Is this quite typical for this size of HRSG?
I've checked our existing boilers...
Hi Guys,
Does anyone got any experience with 3 level of steam(40bar;10bar;3bar) inlets to condensing steam turbine (about 25MW : Siemens/Alstom machine)? What is the complexity in terms of design & operation?
Any advise?
Thanks
norzul
Hi,
We'd procured 4 X 25MW gas turbines (GE/NP). Got some question on the washing facilities:
1) Based on your experience, what is the typical & optimum frequency of online and offline washing
2) Water quality?
Thanks
norzul
Hi,
We had discussion this morning on GTG protection. Is it common to trip a gas turbine due to failure of extraction fans?
Fyi, the GTG is located inside an ecoustic enclosure. There are 2 X 100% extraction fan (1 ruuning + 1 standby). I was told that if both the extraction fans are not...
