Reduce black smoke at boiler chimneys

Would like to share a story of a steam boiler at my work place with the details as below.

Capacity : 27mt/hr
ASWP      : 24 bar
Working pressure : 21 bar
Fuel         : palm fibre and shell.

Issue of concern : black smoke exceed 15minutes per 24 hrs.

Root  cause :
A. high boiler steam flow during processing, (25-27mt/hr)

B. Fuel feed into boiler furnace only drop at front side of furnace and require boilerman to push it further at this moment black smoke will occur at boiler chimney.

Corrective action
1. High boiler steam flow.
A. Fine tune on sterilizer program by reducing opening of make up valve.
B. Close sterilizer inlet valve during 1st and 2nd peak blow off.
C. Repair leak steam traps at kernel silos, steam main line and engine room.
D. Replace BPV surplus valve metal seat to reduce steam wastage.

Result.
Steam flow able to reduce to 22mt/hr

2. Fuel distributions
A. Dismantle fuel feed duckting and mudalating damper duckting, check on Mudalating damper impeller and ensure all are parallel.
B. Repair fuel feel duckting m.s damper. Reduce gap between and smothen the adjustment mechanism.
C. Clear all solidify fuel stuck at cast iron chute.

Result
A. Fuels able to be distributed evenly in furnace.

Final result.
A. Black smoke emission  is averaging 5-6 minutes / 24 hours.

Condensate as dilution

Condensate generation are normally 15-17% of FFB. So for 60mt/hr oil mill condensation generated every hour are about 19.5mt.

Formula to calculate % of dilution are as followings.
A) % dilution = hot water / diluted crude oil.
B) % dilution = hot water / crude oil.

So for 60mt/hr oil mill with 25% of dilution require 10.5mt/hr hot water for dilution. If we are using condensate as dilution we should able to reduce water consumption by 10.5 mt / hr.

1. Condensate from sterilizer will be pump to vibrating screen or stationery screen and been stored at a holding tank.

2. From holding tank. Condensate will be pumped to dilution tank and heeted to 90d c. Overflow of dilution tank will return back to sludge tank.

3. A float valve shall be installet at dilution tank as backup supply in event of less condensate supply.

4. In Evans condensate supply are not sufficient, float  valve will allow frash water as make up.

With this, we will able to reduce water usage by 9.0 metre cube / hr.

In terms of oil recovers efficiency also shown improvement due to reduce of mass at downstream.

EFB Pellet

EFB Pellet

Renewable and sustainable energy is a hot discussion topic through out many countries in the world.  DST Technology has heavily involved in many biomass sustainable energy sectors such as providing EFB (Empty Fruit Bunch) Fibre, wood chip and palm kernel shell to the market.  Now we introduce EFB pelletto the biomass fuel industry.  With EFB pellet, we have wider up our products list for our customer selection.

EFB Pellet

DST has dedicated biomass pellet mill strategically locate in between several palm oil mill. We do have a strong relation and contract with the palm oil mill for supplying us empty fruit bunch.  Our empty fruit bunch resource has become the confident for us to supply EFB pellet to export market.

EFB Pellet Application

EFB pellet is a palletize material manufacturer from EFB (Empty Fruit Bunch) from palm oil mill.  EFB Fibre is a raw type of biomass material with many restrictions especially for export market.  EFB Fibre goes through a palletize process becomes EFB pellet, and this palletize biomass fuel is easy transportation, handling, application and expectable result.  EFB pellet has become an important biomass fuel for the industry.

EFB Pellet Specification

Calorific value = 4,200kcal/kg
Moisture level < 15%
Ash content < 10%
Pellet diameter = 5mm
Pellet Length = 20mm

EFB Pellet Packaging

The EFB pellet is packed under jumbo bag with 750kg per bag.

Bunch Ash

Source of Bunch Ash

Bunch ash is the ash that derives from burning left over from bunch after burning process.  Instead of bunch ash, there are people classified as wood ash, which originate form the source of wood.
The empty fruit bunch (EFB) has been widely used as a biomass substance in biomass boiler for steam generating, and the left over after incinerating chamber could be known as bunch ash.  The bunch ash is light and comes in grey colour.  Bunch ash is well known for it high Potassium contain.

Form of Bunch Ash

The bunch ash comes in powder form with grey to dark in colour.  Low moisture level.

Ingredient of Organic fertilizer

Potassium is the main ingredient for organic fertilizer.  Apart the potassium, fertilizer manufacturer will add in other source to formulate for appropriate NPK ratio,
Bunch ash is widely known as the raw material for organic fertilizer.  Perhaps, bunch ash also one of the original source for Potassium (K₂O) used in organic fertilizer.

Bunch Ash – General Specification

K₂O level = 30%
Moisture content = 8%
Form = Powder form
Packaging = 900kg/jumbo bag, or 50kg/woven bag
Colour = grey to dark grey
We have many years experience in organic fertilizer industry and looking forward to work with organic fertilizer manufacturer for maximizing the bunch ash supply and application.

Empty Fruit Bunch (EFB)

Empty fruit bunches (EFB)

	FERTILIZER CONTENT OF 1 TON EMPTY FRUIT BUNCHES (EFB)	Equivalent quantity of nutrient
1	Urea	3.8 Kg
2	Rock phosphate	3.9 Kg
3	Muriate of potash	18.0 Kg
4	Kieserite	9.2 Kg

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	NUTRIENT CONTENT OF EFB	Composition as a percentage of dry matter
1	Nitrogen (N)	0.44
2	Phosphorous (P)	0.144
3	Potassium (K)	2.24
4	Magnesium (Mg)	0.36
5	Calcium (Ca)	0.36

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EFB Fiber are 100% vegetable base from oil-palm biomass resulting from the palm-oil extraction and milling process. Processed EFB Fiber are used as industrial and farming applications : 1) as a material for wood-based products (particle and fiberboards) 2) composite panels 3) pulp & paper 4) soil stabilization 5) horticultural applications Two Main use of Empty Fruit Bunches in Malaysia : 1) Mulch (護蓋物) in Plantation 2) Fuel for Electricity Generation Oil palm fibers are usable for the following applications :- 1) Animal Feed Supplement for Cattle, Goats and Sheep 2) Rich Source of Organic Fertilizer for Farming 3) Excellent Mulching Material for Landscaping, Young Plants and Seedlings 4) Raw Material for Composite Board Manufacture (example : - MDF / Particleboard / Cement board / Gypsum board) 5) Raw Material for Pulp and Paper Manufacture 6) Filler Material for Pipes and Conduits 7) Planting Medium for Nurseries and Greenhouses 8) Alternative Boiler Fuel Empty fruit bunches (EFB) is becoming a popular source of fuel for renewable energy (RE) power generation. The rapid depletion of fossil fuel and most developed nations are pursuing the development of biomass as an alternative method of power generation. Malaysia has a ready source of biomass in Empty fruit bunches (EFB) conveniently collected and available for exploitation in all palm oil mills. When convert the energy in the most efficient manner, Malaysia is well on the way to this most important sustainable source of energy for this century.  The main achievement of using biomass-based RE power generation is the reduction in greenhouse gas emissions (GHG). In Sabah, large quantities of palm waste called Empty Fruit Bunches (EFB) are available from plantations where palm oil is produced.  In its raw state, EFB is both very fibrous and wet.  If it could be dried, it would be an excellent fuel for power boilers.  FASC Malaysia has installed a KDS machine in the 14 MWe TSH Biomass Power Plant in Kunak, Malaysia, for the purpose of drying EFB.  Called the KDS MF-777, it dries and shreds EFB so that it can be burned as a fuel.  At present, only one-sixth of the fuel input needed by the TSH power plant is supplied by the KDS MF-777.  The KDS MF-777 processes 3750 kg/hr of raw EFB having a moisture content of 52 % and produces 3000 kg/hr of shredded EFB which has a moisture content of 40 % - this is dry enough for burning on a grate.   The power consumption of the MF-777 is only 200 kW, under these operating conditions.  This translates to a drying energy consumption of only 960 kJ per kg of water removal (= 414 BTU/lb) or only 44 % of the latent heat of water!  No other dryer technology can match the low energy consumption of the KDS MF-777.  It is well-known among power plant engineers that every percentage point of moisture in the fuel causes 0.5-1 % reduction in the electricity produced.   Thus, the estimated maximum possible increase in the TSH power plant output because of drying the fuel in the KDS MF-777 is 0.84-1.68 MWe. Thus, a net overall increase in the total power generated becomes possible due to the KDS MF-777. Therefore, the cost of the KDS equipment can be recouped from the extra revenue from the increased electricity production. Oil palm empty fruit bunch (EFB) is yet to be fully utilised economically. RFB has been a subject of environmental concern, whereas its handling in the palm oil mill also consumes unproductive cost and energy.

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Roof Tile using solid wasteNatural fibres reinforced cement-based materials have gain increasing application in residential housing components. One of the natural fibres of oil palm empty fruit bunches (EFB) fibres offer advantages including : 1) availability, 2) renewability, 3) low cost 4) established technology in extracting fibres.   Material recovery from conversion of agricultural solid wastes into potential construction products has not only benefited the environment but also helps preserve natural resources. EFB (empty fruit bunch) is one of such solid waste generated in oil palm planted throughout Malaysia over 4 million hectares land, which remains unutilised commercially. Hence, it has been verified in engineering properties and construction products made from EFB satisfy the requirement of consumers' trend using products made from eco-friendly and natural waste.

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PERFORMANCE AS ROOF TILE •High breaking load •High impact resistance, so avoiding wire-mesh underneath roof tiles •Easy to nail with purlin, so obtaining strong fixity •Light weight, so easy to handle •Non-heat conductor, so avoiding thermal insulator •Zero value for water absorption and water permeability •No buckling effect •Low cost product •Fast in assembling •User-and environmental-friendly product

AP kelapa sawit menyebabkan rantaian bekalan tergendala dan harga CPO jatuh

Keadilan menggesa Kementerian Perusahaan Perladangan dan Komoditi untuk mengambil tindakan segera untuk menamatkan AP Minyak Sawit. Sistem AP memang tidak boleh diguna pakai kerana ianya boleh disalahgunakan dengan pemberian kuota kepada kroni dan ini akan memberi kesan negatif kepada harga pasaran CPO (price distortion).

Kementerian mesti mengubah ke struktur duti ekspot yang rendah, fleksibel dan terbuka supaya syarikat penapisan minyak sawit Malaysia boleh berdaya saing dengan Indonesia.
Krisis isu penapisan minyak sawit ini bermula pada bulan Oktober tahun lepas. Seharusnya masalah ini di selesaikan secepat mungkin, tetapi Kementerian gagal mengambil apa-apa tidakan selama 10 bulan. Dua bulan lalu, Kementerian bertindak dengan meningkatkan jumlah kuota AP Minyak Sawit.
Peningkatan AP Minyak Sawit ini bukan merupakan satu langkah yang bijak, tetapi telah memburukan lagi situasi yang sudah teruk. Ini disebabkan kebanyakkan kuota diberi kepada syarikat syarikat yang memang tak berupaya untuk menjual CPO.Penambahan 2 juta metrik tan CPO kepada pasaran yang sudah lembap telah gagal menarik minat pembeli-pembeli baru.
Menteri Tan Sri Benard Dompok minggu lalu memberi penerangan bahawa masih ada 2.5 juta metrik tan AP yang tak terjual. Malah penambahan AP ini telah menyebabkan satu situasi dimana CPO tidak dapat di hantar kepada pembeli kerana tangki-tangki minyak sawit di loji-loji penapisan dan pelabuhan-pelabuhan sudah sesak penuh dengan minyak kelapa sawit yang telah diproses, tetapi tak terjual.

Kesesakan logisitk ini telah merebak balik dari industri hilir ke hulu (downstream to upstream), dan menyebabkan rantaian bekalan lumpuh tersumbat (clogged supply chain). Kami juga menerima beberapa laporan dari pengusaha sawit bahawa tangki-tangki di kilang sawit (oil mill) kini sudah pun dekat penuh, dan pengeluar dan peneroka FFB (Fresh Fruit Bunch) dipaksa untuk menjual buah-buahan mereka kepada pengilang dengan harga murah dan dengan diskaun. Ramai pemerhati industri sawit juga percaya bahawa dasar penambahan 2 juta AP ini ini telah sedikit sebanyak menyebabkan kejatuhan harga CPO yang mendadak baru-baru ini.

Dasar AP ini adalah merupakan dasar yang tidak masuk akal. Dasar untuk memperkayakan kroni dengan AP tambahan telah merosakkan harga sawit dan akan menjejaskan ekonomi dan industri negara. Memandangkan harga minyak sawit terus menjunam, Kementerian harus mengambil tindakan yang wajar tanpa gangguan politik. Kalau Kementerian tak nak terima nasihat kami, saya syorkan Tun Dr Lim Keng Yaik beri tunjuk ajar kepada Kementerian.

Keadilan juga terus menggesa Kementerian untuk memberi jawapan rasmi sama ada senarai penerima AP adalah rahsia rasmi. Isu ini penting kerana baru-baru ini surat khabar The Edge melaporkan bahawa Palm Oil Refiners Association of Malaysia (PORAM) telah menerima jawapan daripada Kementerian bahawa senarai itu adalah rahsia rasmi.

Jika Kementerian tidak mempunyai apa yang hendak disembunyikan, ia mesti membuat senarai ini terbuka kepada penelitian awam. Kementerian juga mesti mendedahkan jumlah kuota yang diperuntukkan bersama justifikasi penerimaan untuk setiap satu penerima.

Penanaman Betik (Papaya)

Nama saintifik bagi betik ialah Carica papaya L. dari keluarga Caricaceae, dikenali juga sebagai 'paw-paw' merupakan sejenis tumbuhan herba jenis saka yang hidup singkat.  Tanaman ini dipercayai berasal dari West Indies atau Mexico.

VARIETI  DAN PANDUAN MENANAM BETIK

Di Malaysia, terdapat beberapa jenis betik yang dibiak-biak secara tempatan dan juga beberapa jenis dari luar negeri.  Betik jenis tempatan seperti Batu Arang, Morib, Subang 6, Taiping 3, Serdang 1 dan Sitiawan mempunyai isi yang berwarna merah.  Jenis-jenis yang dibiak di luar negeri mempunyai isi berwarna kuning dan diantaranya ialah Sunrise Solo dan Honey Dew.  Keperluan tanaman betik adalah seperti berikut:- 

1. Faktor Iklim 
   Sesuai ditanam di kawasan-kawasan yang mendapat taburan hujan yang sama rata sepanjang tahun.  Keperluan hujan tidak kurang dari 1200 mm setahun dan keadaan kemarau boleh menyebabkan keguguran bunga-bunga betik.  Suhu sesuai untuk tanaman betik ialah diantara 21-33^oC.  Tidak sesuai ditanam di kawasan yang mengalami tiupan angin kencang kerana pengakarannya yang cetek pokok mudah tumbang.
    
2. Faktor Tanah
   Memerlukan tanah bersaliran baik.  Jenis tanah yang mudah dibanjiri air adalah tidak sesuai.  Bagi tanah-tanah yang sederhana sesuai/bermasalah betik boleh ditanam dengan pengurusan yang bersesuaian bergantung kepada masalah yang dihadapi.  Masalah dan cara mengatasi adalah seperti berikut:-
   
   CEC sederhana Rendah
   Ikut program pembajaan yang disyorkan dan gunakan tambahan baja organik.
   
   Lapisan padat (di bawah 50 cm) atau berbatu
   Pecahkan lapisan padat dan buang batu-batu jika perlu.  Kemudian buat batas atau timbunan, sediakan lubang tanaman yang sempurna dan ikuti program pembajaan yang disyorkan.
   
   Sangat salir
   Adakan sistem pengairan dan gunakan bahan-bahan organan sebagai baja tanaman.
   
   Curam
   Elakkan hakisan tanah dengan menanam penutup bumi, menanam mengikut kontor, membina teres atau tapak pentas.  Sediakan parit kontor dan lain-lain.

Diantara kultivar-kultivar betik yang disyorkan ialah:-

• Subang 6 

Sesuai untuk diproses kerana warna isinya yang menarik serta saiz buahnya seragam.  Ia juga boleh dimakan segar kerana senang dihiris dan tidak mudah patah.  Jenis ini sangat subur pada peringkat awal pertumbuhan dan berbuah awal, lebih kurang 42-44 minggu selepas disemai. Buah yang masak mempunyai warna kulit kuning seragam dengan permukaan buah yang sangat bersih dan bebas daripada bintik-bintik atau lebam manakala tekstur isinya bagus dan mantap, dengan kandungan gula yang rendah.

• Sitiawan

Betik jenis ini lebih sesuai untuk diproses atau ditinkan kerana hasilnya tinggi dan isinya yang pejal.  Ia mempunyai tumbesaran yang sangat subur, ketinggian yang sederhana dan cepat berbuah, kira-kira 44-45 minggu selepas disemai.

• Batu Arang

Mempunyai ketinggian pokok yang sederhana tetapi cepat berbuah.  Ianya mula berbunga 4-6 bulan selepas disemai dan mengambil masa selama 5 bulan untuk buah membesar dan masak.  Tumbesaran dan penghasilan pokok amat sensitif kepada faktor-faktor alam persekitaran seperti suhu yang tinggi dan kemarau.

• Eksotika

Betik Eksotika ialah hasil kacukan secara berulang-ulang diantara jenis luar negeri Sunrise Solo dengan jenis tempatan Subang 6.  Hasil kejayaan ini, betik Eksotika merupakan jenis  yang berpotensi untuk pasaran.  Pokok Betik Eksotika sederhana tingginya dan mula berbunga pada peringkat umur 3-4 bulan selepas ditanam.  Buah akan dihasilkan dan kematangannya akan mengambil masa selama antara 4 ke 5 bulan, dewasa pokoknya setinggi lebih kurang 80 cm dari permukaan tanah.

Kesemua pokok betik eksotika akan menghasilkan buah jantina iaitu bermofrodit dan buah betina.  Buah bermofrodit berkeadaan panjang berbentuk pir, kecil di bahagian pangkal dan besar menirus ke bahagian hujung.  Sementara buah betina berbentuk bulat.  Berat sebiji diantara 600-800 gm dan mempunyai kandungan gula yang tinggi 14-15 TSS.  Isinya tebal berwarna samar kemerahan, rongga ovarinya kecil, berbau wangi dan lazat  rasanya.

CARA MENANAM

Tanaman betik sesuai kepada tanah yang mempunyai struktur dan saliran yang baik tetapi sentiasa berkeadaan lembab.  Tanah yang terendam air tidak sesuai bagi tanaman betik.  Pohon betik akan hidup subur di kawasan lapang tetapi tidak terdedah kepada angin yang kencang.  Cahaya matahari yang cukup dan taburan hujan yang serata adalah mustahak bagi tanaman betik.

PENYEDIAAN BIJI BENIH

Sebanyak 1,700 pokok anak benih adalah diperlukan bagi tanaman setiap hektar tanah dan ditambah 10% atau 200 pokok lagi untuk sulaman jika ada yang tidak hidup selepas ditanam.  Biji benih elok disemai ke dalam polibeg, yang berukuran 15 cm x 22 cm.  Isikan polibeg dengan campuran 2 bahagian tanah lapisan atas, 1 bahagian pasir sungai dan 1 bahagian bahan organik (tahi ayam atau tahi lembu).  Sebelum biji benih disemaikan, adalah baik dirawat terlebih dahulu dengan racun thiram untuk mengelakkan terkena serangan kulat.

Tanamkan biji benih sedalam 2 cm ke dalam tanah.  Jangan tanam terlampau dalam kerana ditakuti benih tidak akan bercambah disebabkan terlampau cetek biji benih yang disemai akan berubah-ubah tempat semasa menyiram dan kecambahannya akan terganggu.  Biji benih akan bercambah dalam masa satu minggu.  Sedang anak benih beransur membesar, taburkan racun siput di merata kawasan, untuk mengelakkan daripada serangan siput.  Selain anak benih berumur 6-8 minggu ataupun telah berdaun 8-12 helai, anak semaian boleh diubah ke ladang.

KAWASAN PENANAMAN

Kawasan yang akan ditanam hendaklah dibersihkan dan dibajak.  Gali lubang sedalam 30 cm dan 30 cm lebar.  Jarak tanaman 1.8 m x 2.7 m, boleh ditanam sebanyak 1,700 pokok sehektar.  Semasa menanam gaulkan tanah di permukaan atas dengan baja phosphate sebanyak 200 g -250 g.  Pilihlah musim hujan yang sederhana apabila hendak menanam, kalau masa hujan yang banyak boleh menjadi keadaan terlalu lembab, dan akar betik yang belum berfungsi itu menjadi busuk.

Tipper/crane log sheet

Each station log are very important for every management, it is a great tools for monitoring propose. Every station log must filed separately for easy monitoring.
For crane log it will project on mill throughput and will clearly display any process delay.
Management must set minimum cage need to be lifted every hour and train relevant operator and set it as a KPI.
The main objective of crane log are to troubleshoot on inconsistent mill throughput. By achieving consistent mill tpt it is proven that process are much more stable.

Sterilizer deaeration

The objective to have deaeration during sterilizing are to remove oxygen trapped inside sterilizer during door closed.
How do we ensure optimum oxygen had been removed from sterilizer during sterilizing.
The most suitable way are by opening only inlet and condensate valve, while exhaust valve remain close.
Instal a temperature gauge at condensate pipe line and monitor what is the time required to build up temperature to 90 d c.
At my mill it took about 17 minutes. During carrying out this test you will notice few factor that will contribute into poor deaeration, one of the common problem are scale build up in s.s condensate pipe which reduce the flow.
If sterilizer deaeration is good. We will be able to reduce sterilizer pressure build up time which will also reduce sequencing time and able to sustain mill throughput.
The most significant result are reduce in USB up to only 1%.

Photo shoot september 2

Boat ride at sungai kinabatangan

Sakiranya anda melawat ka daerah kinabatangan sabah, jangan lepaskan peluang mengunjungi kawasan sukau.

Anda boleh minginap di resort atau homstay di kawanan persekitaran, harga agak berbalao dan jangan lepaskan peluang boat ride sepanjang sungai sukau dan kinabatangan.

Banyak spisis hidupan liar dapat dilihat seperti probosis monkey, Pigie elephen, wild duck, hornbill dan beberapa spisis monyet dan burung2.

Sesuai untuk bercuti bersama keluarga atau rakan kerja, selain itu pihak resort juga menyediakan kawasan jungle trecking. Terdapat ramai pelancong luar di kawasan ini, so kita sebagai rakyat sabah sendiri jangan lepaskan peluang ini.

Boiler Overhaule Schedule

ISS OIL MILL

Boiler no.1 service program

Month : Jan 2012

SCHEDULE OF BOILER NO.1 OVERHAULE

Date	Activities	PIC	Remarks
28.01.2012	1. Run Boiler No.2 2. Cool down boiler no.1	Boiler
29.01.2012	1. Blank off Main steam line boiler no.1 2. Drain off Boiler no.1 3. Open manhole to ventilate for 24 hours.	Workshop Boiler Boiler
30.01.2012	1. Dismantle baffle plate & Boiler Fitting     And soot blower. 2. Dismantle headers casing, clean furnace     Chimney. 3. Clean down comer tubes, gas side (furnace)	Workshop Boiler Process	To complete by 9.02.2012
31.01.2012	1. Dismantle headers hand holes 2. Commence cleaning furnace & brick wall 3. Servicing boiler fittings 4. Commence cleaning tube, steam drum  side. (40 tubes/day)	Boiler Process Workshop process	To complete by 25.2.2012 To complete by 14.2.2012
11.02.2012	1. Replace worn out dust collector cone 2. Check and rearrange fire grates.	Workshop Boiler
14.2.2012	1. Commence cleaning tubes and mud drum (40 tubes/day)	process	To complete by 26.2.2012
15.2.2012	1. Touch up furnace wall	Boiler	PIC Tube Cleaning Shift A 1. Budi Jupri & Asrill Shift B 1. Abdul & Suhaimi Boiler 1. Hassan Yaji, Asry & Firman Furnace 1. Hasnudin, jamaludin, khairul.N, Roslan,Musalim & Sabri. Workshop 1. Diaman, Asmadi & saripuddin
16.2.2012	2. Cleaning tube band area and baffle plates 3. Continue cleaning bottom and front headers.	Boiler Boiler
17.2.2012	1. Clean ash pit and repair brickworks.	Boiler
29.2.2012	1. Inspection by Machinery Inspector	JKKPj
1.3.2012	1. Assemble steam separator plates and holes cap to headers. 2. Assemble boiler fittings and blank safety valve seat.	Boiler Workshop
2.2.2012	HT boiler no.1	Boiler
3.2.2012	1. Remove blank at main steam line 2. Start slow firing	Workshop Boiler

Others

1.       To identify number of dust cone need to be replace and order(Iss)

2.       Inspect condition of furnace bricks and wall for repair if necessary (Iss)

3.       Instrument calibration after inspection.

4.       Safety valve no.1 seat need to be replace. (store)

5.       To remark at CEMS system Boiler under service (Office)