Friday 7 November 2014

Ceiling fan technical specification

 
Ceiling fan technical specification
Type test report shall indicate clearly the following parameters:-

1 a) Blade angle at root, elevation and at tip
  b) Width, thickness and material of the blade.
  c) Capacitance value.
  d) Material of the body of the fan motor
  e) Total weight of the fan motor.
2. Blade thickness without paint is not less than 1.0 mm for sweep 1200 mm.
3. The material of the fan blade shall be of designation 31500B with condition Hx6 Aluminium Alloy Sheet conforming to IS:737/2008.
4. The load bearing bolt shall be of min. 6 mm dia with aluminum Clamp, Spring Washer, Nut and Check nut and Split Pin.
5. Down rod shall be of 1.6 mm nominal thick ERW pipe.
6. Shackle made from 2 mm nominal thick CRC sheet
7. Bolts (2 nos.) shall be 6mm with Spring Washer Nut and Check nut and Split Pin.
8. Shank shall be made of CRC sheet of thickness 1.6 mm minimum without paint for all sizes.
9. Shackle cover: poly propylene.


Note to Bidders:
a) The bidder is authorized dealer, distributor or OEM (original equipment manufacturer).
b) In case of dealer or distributor, the certificated to be submitted along with offer.
c) The manufacturer shall maintain themselves all test like rpm, speed, insulation test, HV test etc as per relevant ISI.
d) The bidder has to send any 10 nos. of test repot of ceiling fans with serial no before dispatch of fans.
e) The COSTOMER reserves right either to inspect at shop floor or can give dispatch clearance by reviewing the test repot at sole discretion of IOCL.
f) The COSTOMER may witness any 10 samples at random at shop floor at sole discretion of IOCL.
g) Warrantee is not less than 02 years.

Specifications of 1200 MM  C/FAN

1. Rated voltage   : 220-240 v, AC, 50 Hz.
2. Rated speed     : 340 -370 r.p.m.
3. Rated air delivery: 210 m³/min.
4. Power consumption: Not more than 63 watts.
5. Class of insulation: B
6. Power factor: More than 0. 9
7. Motor body cover: Al. pressure die casted & CRCA sheet
8. Capacitor   : 1.6- 2.0 mfd.
9. Ball bearing: Double ball bearing.
10. Blade: Blade of Al. alloy sheet with 3 nos. blade.
11. Down rod: 300 mm long, Cold rolled pipe
12. Shackle assembly: With Al. spacer clamp for additional safety
13. Insulation test   : Not less than 2mega ohms.
14. HV Test   : With 1.5kv Voltage for 1min.
15. Leakage Current: Not more than 210 mili amp.

Tuesday 30 September 2014

Transformer oil filtration machine Typical


The oil filtering machine is a portable device used for filtering the transformer oil and switchgear oil. He oil is circulated through filtering plant for several hours till the desired dielectric strength (above 40kv) of oil and PI (polarisation index, value, equal or mare than 1.3 desirable) are achieved.

The following impurities are removed-

·         Dissolved moisture, free water
·         Solid particle
The oil filtration plant having the enlisted component-
·         Degassing chamber: A vacuum chamber  is provided with special packed columns to degas the oil. It can be in single or multiple stages.
·         Vacuum pumping System: Quality high vacuum pumps and accessories.
·         Filters: Capable to size-filter the oil to rated micron size.
·         Heating system: Tube and shell constructed, indirect type (heaters placed in protection tubes), gentle heating exchangers, Division of power in groups with selective thermostatic controls for larger capacities.
·         Inlet pump: Vacuum-tight trouble-free positive displacement gear pump.
·         Outlet pump: Special Mono-block/Glandless/Canned Motor/Centrifugal pump.
·         Valves: Vacuum-tight manual, automatic and anti-suck back valves.
·         Control panel: Centralized control panel with electrical switchgear and an illuminated flow of diagram.
The temperature of 70 deg.C is maintained during circulation of oil. The filter plate in the filter unit removes the solid particles. The heated oil is passed through spray chamber and vacuum chamber to remove free water particle and the moisture.


Typical filter plant
Flow rate                                              : 200litres/hr
Filtration
Method                                                : edge type
Performance                            : 99.6% (efficiency at 1 micron)
Vacuum treatment
Normal vacuum pump performance    : 10torr (in vacuum chamber)
Optional start up made                                     : 50 torr
Vacuum pump capacity                                   : 6m/hr
Vacuum degassing performances
Moisture –single pass               100ppm→20ppm
                Triple pass               100ppm→10ppm
Gas          –single pass             100%ppm→1%ppm
                Triple pass               10%ppm→<1%ppm
Control parameter
Instrumentation                                    : pressure/temperature /vacuum
Automatic switching                            : high level, low level
Input power
Power supply   : 240V AC, 50htz, single phase, 32A
Power              : 6.15 KW
Auxiliaries
Inlet hose         : 6m
Outlet hose      : 6m
Power cable     : 12m, 2CX6sqmm copper or 2Cx10 sqmm AL, earth wire separate cu, 2.5 sqmm.

Dimension and weight
Overall dimension                   700x600x1280 mm
Weight                                                 160 kg (dry)

Monday 29 September 2014

powder coating of panel


Powder coating Painting

Powder coating is an advanced method of applying a decorative and protective finish to a wide range of materials and products that are used by both industries and consumers. The powder used for the process is a mixture of finely ground particles of pigment and resin, which is sprayed onto a surface to be coated. The charged powder particles adhere to the
electrically grounded surfaces until heated and fused into a smooth coating in a curing oven. The result is a uniform, durable, high-quality, and attractive finish.


Purpose:
The basic purpose is to carry out pre-treatment before powder coating. Normally 7-10 tanks are used for hot process for cleaning before applying the powder coat. General practice is to follow the best of standards in the implementation of “Seven Tank Process”.
Typical size: seven tanks are made of Poly Propylene and the size of each tank is (2600 L X 1400 B X 2500 D) mm

TANK-1                      DEGREASING
TANK-2                      WATER RINSE-I
TANK-3                      DERUSTING
TANK-4                      WATER RINSE-II
TANK-5                      SURFACE ACTIVATION
TANK-6                      PHOSPHATING
TANK-7                      WATER RINSE-III
TANK-8                      PASSIVATION

1. DEGREASING
Room Temperature Process, Duration-30-40 Minutes, For-Cleaning the Sheet Metal Surface of grease, oils, soils, lubricants, oxide films, Heat Treatment/welding Scales etc. by ALKALINE DEGREASER.

2. WATER RINSE-I
Rinsing Process is Carried out.

3. DERUSTING
Room Temperature Process, Duration-20 Minutes, For-Cleaning The Sheet Metal Surface of Rust by Mixed HYDROCHLORIC ACID.

4. WATER RINSE-II
Rinsing Process is carried out.

5. SURFACE ACTIVATION
Room Temperature Process, Duration-20 Minutes, For-Activating the Sheet Metal Surface for Zn & Mn phosphate Coating by ACTIVATION CHEMICALS.

6. PHOSPHATING
Room Temperature Process, Duration-5-20 Minutes, For-Smooth & Uniform Coating of Sheet Metal Surface with Zn Phosphate by ZINC PHOSPHATE SOLUTION

7. WATER RINSE-III
Rinsing Process is carried out.

8. PASSIVATION
Room Temperature Process, Duration-15-20 Minutes, For-Sealing Pores of Sheet Metal Surface for obtaining Maximum Corrosion Resistance over Phosphate Coating by DECXYLITE SOLUTION

OVEN DRYING
150 Deg c Process, Duration-10-20 Minutes, For- Drying Sheet Metal Parts by hot air.

POWDER COATING

Done within 24 Hrs of Oven Drying, Sheet Metal parts are Coated with Powder of shade desired by client through Spraying in Spray Booths, and then Epoxy-Powder Coated/Sprayed Sheet Metal parts are baked in Electrically Fired Oven at 140-150 Deg c for 10-15 Minutes


Surface preparation.
Surface preparation includes

Cleaning – mechanical or chemical
Mechanical cleaning includes methods like scratch brushing and sand blasting. This by abrasive action not only removes the surface impurities but also eliminates scratches and surface irregularities. Cleaning is very good; however, coating must be done immediately because the cleaned surface is in a highly reactive state and corrosion occurs very soon. Chemical cleaning includes removal of dirt, oil and grease, and the oxidation products present on the surface by means of chemicals. The chemicals may be applied by wiping, spraying or dipping. The nature of chemicals used depends upon the base metal.


Application of conversion coating:
These are applied for three purposes:
a) To provide temporary in process corrosion protection before application of powder coating.
 b) To promote good adhesion of the powder coating to the substrate.
c) To impart under paint corrosion & thereby improve the life of the powder coating.
The type of the conversion coating used also depends upon the base.

PRETREATMENT FOR MILD STEEL
TENDENECY OF MATERIAL: - picking up rust when exposed to atmosphere bare.
NEED OF CLEANING - Presence of oil, grease, rust and black scale on the surface. Mild Steel material is known for its tendency of going under rapid oxidation when exposed to atmosphere bare. The result of oxidation is the formation of oxide layer on the surface which we commonly call as ‘RUST’.
To avoid this oxidation or rusting, the mild steel material is not allowed to get directly exposed to atmosphere. For this, we generally find rust preventive oil on the surface of mild steel material. The oil does not allow the material to come in direct contact with air and thus delays oxidation. However, this doesn’t entirely eliminates the problem of rusting and it only delays the process of rust formation.
Some mild steel materials are hardened for strengthening and similarly some are welded during fabrication. Both these processes leave black scale on the surface.
It concludes that mild steel parts generally have rust and/or grease-oil and/or black scale on the surface. All these cause severe problems of bonding if not removed before application of paint.
NEED OF CONVERSION COATING – The bare metal being extremely susceptible to atmospheric corrosion should be applied with conversion coating Before painting, once the rust, oil and scale are cleaned, the bare metal is again exposed for oxidation. To avoid this, the material has to be coated with some type of conversion coating which prevents further oxidation before applying paint and also gives adhesion for paint.

DEGREASING –
 Removal of oil and grease from the surface-
This can be done by Solvent Based Degreasing:- Petroleum based solvents have excellent degreasing abilities but are not commonly used because they are highly inflammable.
Alkaline degreasing powders:-
This is generally a blend of alkalies and surfactants. This is advised to be used under hot conditions. However, alkaline powders are also used under cold conditions as knock out degreasing stage.
Acidic Degreasing:-
These are solvent based liquids which are acidic in nature. They remove rust as well as grease under cold conditions. The bath of these chemicals is however, much expensive as their concentration is much higher than alkaline degreasing.

DERUSTING – Removal of rust and light scale from the surface.
These are necessarily acidic chemicals unlike degreasing, which may be alkaline in nature. The chemical is generally a blend of mineral acids like phosphoric acid, sulphuric acid and hydrochloric acid with added inhibitors. Higher acidity will result in faster removal of rust. However, this will affect the life of the coating applied later. Phosphoric acid based de-rusting chemicals are most suggested for pre-treatment of mild steel before applying paint.

CONVERSION COATING FOR MILD STEEL
The most common types of conversion coating include:
- Zinc phosphate coating
- Iron phosphate coating

Zinc phosphate coating is crystalline heavy coating gray in colour. While iron phosphate coating is amorphous conversion coating that ranges in colour from iridescent blue to gray.
Iron phosphate coating gives minimum sludge formation and hence smoother finish than zinc phosphate. Apart from this the bonding characteristics are also good. Iron phosphate processes are much easier to operate than zinc phosphate processes and require fewer process stages (zinc phosphate coating requires a pre-dip in activation chemical prior to phosphating to have micro crystalline grain structure), but iron phosphates do not provide the degree of  corrosion protection imparted by zinc phosphates.

Iron phosphate systems are therefore used for a range of products requiring a durable finish that are not exposed to severely corrosive environments. Zinc phosphating processes have been developed to provide exceptional painted part durability in corrosive requirements. Typical industries using zinc phosphate processes include automotive, appliance and truck and bus.
POST-TREATMENT
After a metal surface receives a conversion coating, the surface is water rinsed to remove un-reacted conversion coating chemicals and a post-treatment is applied. The post-treatment can provide a two- to ten-fold increase in corrosion resistance and humidity resistance when compared to conversion coatings without final rinses. Post-treatments are generally based on chromic acid.

Problems Because Of Improper Cleaning:-
1. Appearance of oily patches.
2. Appearance of pin holes.
3. Appearance of rusty surface beneath powder coating film.
PROBLEMS BECAUSE OF IMPROPER CONVERSION COATING:-
1. Reduced resistance to weather.
2. Reduced mechanical resistance.
3. Poor finish of the powder coating film.
PROBLEMS BECAUSE OF IMPROPER DRYING:-
1. Appearance of pin holes.
2. Poor bonding of the powder coating film.
These problems can be avoided by the choice of right process – right chemicals and right  maintenance of the chemicals.

Saturday 30 August 2014

service tax category


Service tax category

Sr.No
Service Category
Date of
 Introduction
Accounting codes
Tax Collection
Other Receipts
1
01.11.1996
00440013
00440016
2
01.07.1997
00440032
00440033
3
Airport Services
10.09.2004
00440258
00440259
4
16.10.1998
00440072
00440073
5
01.05.2006
00440346
00440347
6
01.05.2006
00440370
00440371
7
16.07.2001
00440181
00440182
8
16.07.2001 


00440169


00440170
9
16.08.2002
10
16.07.2001
00440173
00440174
11
16.08.2002
00440209
00440210
12
16.07.2001
00440165
00440166
13
01.07.2003
00440225
00440226
14
Business Exhibition Service
10.09.2004
00440254
00440255
15
01.05.2006
00440366
00440367
16
16.08.2002
00440217
00440218
17
16.08.2002
00440189
00440190
18
16.10.1998
00440092
00440093
19
16.06.2005
00440318
00440319
20
16.07.1997
00440045
00440046
21
16.06.2005
00440322
00440323
22
Commercial or Industrial Construction
10.09.2004
00440290
00440291
23
01.07.2003
00440229
00440230
24
16.10.1998
00440100
00440101
25
16.06.2005
00440334
00440335
26
07.07.1997
00440057
00440058
27
16.07.2001
00440133
00440134
28
16.10.1998
00440096
00440097
29
01.11.1996
00440014
00440018
30
01.05.2006
00440394
00440395
31
16.10.1998
00440088
00440089
32
15.06.1997
00440026
00440027
33
16.06.2005
00440310
00440311
34
16.08.2002
00440221
00440222
35
01.07.2003
00440233
00440234
36
16.08.2002
00440197
00440198
37
16.08.2002
00440213
00440214
38
Forward Contract Services
10.09.2004
00440282
00440283
39
01.07.2003
00440237
00440238
40
Foreign Exchange Broker
01.07.2003
00440173
00440174
41
01.07.1994
00440005
00440006
42
16.08.2002
00440205
00440206
43
Intellectual Property Service
10.09.2004
00440278
00440279
44
16.10.1998
00440076
00440077
45
01.07.2003
00440241
00440242
46
01.05.2006
00440382
00440383
47
Life Insurance
16.08.2002
00440185
00440186
48
16.06.2005
00440330
00440331
49
01.07.1997
00440116
00440117
50
01.07.2003
00440245
00440246
51
16.10.1998
00440035
00440036
52
07.07.1997
00440060
00440061
53
16.10.1998
00440112
00440113
54
16.07.2001
00440153
00440154
55
Opinion Poll Service
10.19.2004
00440274
00440275
56
Outdoor Caterer
10.09.2004
00440051
00440052
57
16.06.2005
00440326
00440327
58
Pandal or Shamiana Services
10.09.2004
00440054
00440055
59
16.07.2001
00440129
00440130
60
Port Service ( Major Ports)
16.07.2001


00440177



00440178
61
Port Services( Other Ports)
01.07.2003
62
01.05.2006
00440374
00440375
63
16.08.2002
00440201
00440202
64
16.10.1998
00440104
00440105
65
01.05.2006
00440350
00440351
66
01.05.2006
00440338
00440339
67
16.07.1997
00440048
00440049
68
01.05.2006
00440354
00440355
69
16.07.2001
00440125
00440126
70
16.10.1998
00440108
00440109
71
01.05.2006
00440342
00440343
72
01.05.2006
00440378
00440379
73
16.06.2005
00440306
00440307
74
16.07.2001
00440161
00440162
75
01.05.2006
00440358
00440359
76
15.06.1997
00440029
00440030
77
01.07.1994
00440008
00440009
78
16.08.2002
00440193
00440194
79
Survey & Exploration of Minerals
10.09.2004
00440270
00440271
80
16.06.2005
00440314
00440315
81
T.V. & radio Programme Production Services
10.09.2004
00440286
00440287
82
01.07.2003
00440249
00440250
83
Technical Inspection & Certification Agency
01.07.2003
00440249
00440250
84
01.09.1997
00440063
00440064
85
Transport of goods by Air
10.09.2004
00440266
00440267
86
01.01.2005
00440262
00440263
87
01.05.2006
00440390
00440391
88
16.06.2005
00440302
00440303
89
01.05.2006
00440362
00440363
90
01.05.2006
00440386
00440387
91
Travel Agent other than Air & Rail Travel
10.09.2004
00440294
00440295
92
16.10.1998
00440084
00440085
93
16.07.2001
00440157
00440158
94
Telecommunication
01.06.2007
00440398
00440399
95
Renting of immovable property
01.06.2007
00440406
00440407
96
Works contract
01.06.2007
00440410
00440411
97
Content Development & Supply
01.06.2007
00440414
0440415
98
Asset Management
01.06.2007
00440418
00440419
99
Mining Services( Oil & Gas)
01.06.2006
00440402
00440403
100
Design Services
01.06.2007
00440422
00440423
101
Information Technology Software services
16.05.2008
00440452
00440450
102
Investment Management for ULIP
16.05.2008
00440430
00440431
103
Recognized Stock Exchange
16.05.2008
00440434
00440435
104
Recognized Associations-Commodity Exchange Services
16.05.2008
00440438
00440439
105
Clearing & Processing House services
16.05.2008
00440442
00440443
106
Supply of Tangible Goods services
16.05.2008
00440445
00440447
107
Cosmetic or Plastic Surgery Services
01.09.2009
00440460
00440463
108
Transport of Coastal goods, Goods through National Waterways or Goods through Inland Waterways
01.09.2009
00440470
00440473
109
Legal Consultancy Services
01.09.2009
00440480
00440483
110
Promotion, marketing or organizing  of games of chance  including lottery, bingo etc. services
01.07.2010
00440595
00440596
111
Health services undertaken by Hospitals or Medical  establishments
01.07.2010
00440598
00440599
112
Maintenance of Medical Records services
01.07.2010
00440601
00440602
113
Promotion of Brand of Goods, Services etc.
01.07.2010
00440604
00440605
114
Services of Permitting Commercial Use or Exploitation of any event
01.07.2010
00440607
00440608
115
Electricity Exchange Services
01.07.2010
00440610
00440611
116
Copyright Services
01.07.2010
00440613
00440614
117
Services provided by Builder in relation to preferential location, internal/external development etc
01.07.2010
00440616
00440617
118
Services of Air-conditioned restaurants having license to service alcoholic beverages in relation to service of food or beverages.
1.5.2011
00441067
00441068
119
Services of providing of accommodation in hotels / inns/ cubs/ guest houses/ campsite for a continuous period of less than three months
1.5.2011
00441070
00441071


One Nation, One electrical License

Electrical contractors are facing license problem when they bid for another state. Generally they are entitled to do work in particular stat...