Indian Boilers Regulations - 1950

8/10/2019 Indian Boilers Regulations - 1950

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Contents Regulation Wise

Reg.1 Short Title, Extent, Application and Commencement

Reg.2 Definitions

Reg.3 General Requirements, Applications of Standard Conditions andExpectations thereto

Reg.3A Inspection of Boiler to comply into any foreign code

Reg.4 Standard Requirements-Material, Construction, Inspecting Authority'sCertificates and Maker's Stamp

Reg.4A Application for Recogni tion

Reg.4B Scrutiny of applications by the Evaluation Committee

Reg.4C Recognition of a firm as Competent Authority, Inspecting Authorities, etc.

Reg.4D Validity of Certificate of Recognition

Reg.4E Renewal of Certificate of Recognition

Reg.4F Application for registration of existing competent authority

Reg.4G Appeal

Reg.4H Function of Evaluation committee

Reg.5 Modification of Formulae

Reg.5A Material not fully identified

Reg.6 Standard Specifications for Materials

Reg.7 Boiler Shells not in Accordance with Standard Conditions

Reg.8 Use of Welding

Reg.9 Process of manufacture

Reg.10 Chemical Analysis

Reg.11 Freedom from defects, etc

Reg.12 Rolling Margin

Reg.13 Testing and Inspecting.

Reg.13A Designate steel

Reg.14 Selection of test pieces

Reg.15 Tensile Test pieces

Reg.16 Tensile tests
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http://dipp.nic.in/boiler_rules_updated/contentsregulation.htm 2

Reg.17 Number of Tensile Tests

Reg.18 Dump Tests

Reg.19 Bend Tests

Reg.20 Number of Bend Tests

Reg.21 Manufactured Rivets

Reg.22 Additional tests before rejection

Reg.23 BrandingReg.24 Defacing of rejected material

Reg.25 Facilities for inspection

Reg.26 Steel not produced where rolled

Reg.27 Makers Certificate

Reg.28 Rivet Bars

Reg.29 Manufactured Rivets Tests

Reg.30 Stay Bars

Reg.31 Stay Bars - Bend TestsReg.32 Special Iron for Screw Stays for Fire-boxes and Combustion Chambers

Reg.33 Plates

Reg.34 Stay and Rivet bars

Reg.35-1 Copper Tubes

Reg.35-2 Brass Tubes

Reg.35-3 Carbon steel tubes

Reg.36 Material process

Reg.37 Selection of Tubes for Test

Reg.38 Tensile and Hardness Tests

Reg.39 Flattening Test

Reg.40 Expanding or flaring test

Reg.41 Additional test before rejection

Reg.42 Hydraulic Test

Reg.43 Material

Reg.44 Tensile, Bend and Flattening tests



Reg.47 General

Reg.48 Material

Reg.49A Tensile and Hardness Tests

Reg.49B Flattening Test

Reg.49C Expanding or flaring test


Reg.51 Hydraulic test.


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Reg.52 General

Reg.53A Material

Reg.53B Heat treatment

Reg.53C Workmanship and tolerance

Reg.53D Selection of Tubes for testing

Reg.54A Tensile Test

Reg.54B Bend Test

Reg.54C Flattening Test



Reg.57 General

Reg.58 Material

Reg.59 Flattening & Flaring test

Reg.60 Tensile Test

Reg.61 Hydraulic test

Reg.62 Test specimens

Reg.63 Number of tests

Reg.63A Material

Reg.73 Scope


Reg.75 Freedom from all rectification of defects

Reg.76 Number of tests

Reg.77 Tensile Test

Reg.78 Bend tests


Reg.80 Procedure for Welding

Reg.81 Forged or rolled pressure parts

Reg.82 Selection of test pieces

Reg.83 Tensile strength

Reg.84 Bend Tests


Reg.86 General grey iron casting (Grade A)

Reg.87 Provision of test bars

Reg.88 Dimension of test bars

Reg.89 Mechanical test

Reg.90 Transverse test

Reg.91 Tensile test

Reg.92 Number of transverse and tensile tests


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Reg.93 Additional Tests

Reg.94 General requirements

Reg.95 Requirements for Normal Penetration Electrodes

Reg.96 Requirements for Deep Penetration Butt-Welding Electrodes

Reg.97 Requirements for Deep Penetration Fillet Welding Electrodes

Reg.98 Periodic Check Test

Reg.98A Filler rods for gas welding of steelReg.99 Preparation of Plates

Reg.100 Normalizing of certain steel plates

Reg.101 Minimum thickness of Plates

Reg.102 Cylindrical Shells

Reg.103 Position of Longitudinal Seams

Reg.104 Circumferential and End Seams

Reg.105 Angle Rings

Reg.106 Thickness of Shell Angle RingsReg.107 Welded Shell Plates

Reg.108 Longitudinal Seams

Reg.109 Butt Straps

Reg.110 Thinning of Butt Straps

Reg.111 Alternative Construction

Reg.112 Local Welding of Butt Seams

Reg.113 Flat End Plates

Reg.114 Strengthening of Flat End Plate at Manhole

Reg.115 End Plates in steam spaces

Reg.116 Hemispherical Crowns

Reg.117 Dished End and Crown Plates

Reg.118 Tube Plates

Reg.119 Parts of flat tube plates within the tube nests

Reg.120 Flanging of End Plates

Reg.121 Furnaces in general

Reg.122 Furnaces of Horizontal boilers

Reg.123 Furnaces of Vertical Boilers

Reg.124 Longitudinal Seams

Reg.125 Fusion Welded Longitudinal Seams

Reg.126 Furnace Crown

Reg.127 Cross Tubes

Reg.128 Uptakes

Reg.129 Loco Type Fireboxes


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Reg.129A Welded Joints in Copper Fire Boxes

Reg.130 Bar Stays

Reg.131 Longitudinal Stays

Reg.132 Nuts and Washers for Stays

Reg.133 Jointed Stays

Reg.134 Diagonal Bar or Rod Stays

Reg.135 Screwed StaysReg.136 Axial drilling

Reg.137 Stay Nuts

Reg.138 Spacing of End Stays Allowance for curves, etc.

Reg.139 Girder Stays for Firebox and Combustion Chamber Crowns

Reg.140 Gusset Stays

Reg.141 Breathing Space

Reg.142 Gussets Angles

Reg.143 Load on Gusset StayReg.144 Gusset Riveting

Reg.145 Steel and Wrought Iron Tubes

Reg.146 Fitting of Plain Tubes

Reg.147 Screw Threads of Stay Tubes

Reg.148 Stay Tubes

Reg.149 Thickened ends of Stay Tubes

Reg.150 Load on Stay Tubes

Reg.151 Steel Tubes

Reg.152 Attachment of Steel Tubes

Reg.153 Copper Tubes

Reg.154 Headers, Mud Boxes, etc., of Water Tube Boilers

Reg.155 Stand Pipes and Pads

Reg.156 Design of stand pipes

Reg.157 Pressed Plate Saddles

Reg.158 Seating for Mountings

Reg.159 Attachment of Mountings

Reg.160 Insufficient thickness of End Plates

Reg.161 Attachment of Water and Pressure Gauges

Reg.162 Mountings on Flat Plates

Reg.163 Bolts and Nuts

Reg.164 Access

Reg.165 Compensating Rings and Frames for Openings in Shells

Reg.166 Doors and Cross Bars


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Reg.167 Raised Manhole Frames and Cover Plates

Reg.168 Position of Manhole in Shell

Reg.169 Compensation Rings to Manholes

Reg.170 Compensation for cutting large holes in Shell Type Boilers

Reg.171 Rivets securing compensating rings and Stand Pipes

Reg.172A Rivet Heads

Reg.172B Tolerances on shanksReg.172C Rivet Holes

Reg.173 Riveting

Reg.174 Fullering and Caulking

Reg.175 Maximum pressure

Reg.176 Formula for Working Pressure of Shell

Reg.177 Methods of calculating the strength of riveted joints

Reg.178 When Pitch exceeds maximum allowed

Reg.179 Butt Straps and spacing of rivets below requirementsReg.180 Percentage of Welded and Strapped Seams

Reg.181 Percentage to be allowed for Solid Rolled Shells

Reg.182 Thickness of Butt Straps

Reg.183 Maximum Pitch of Rivets in longitudinal joints

Reg.184 Spacing of rows of rivets

Reg.185 Circumferential and End Seams of Water Tube Boilers

Reg.186 Compensation for Manholes and other openings

Reg.187 Uncompensated holes in Water Tube Boilers

Reg.188 Complete hemisphere wi thout stays or other support made of one or moreplates and subject to internal pressure

Reg.189 Dished ends subject to internal pressure

Reg.190 Dished ends subject to external pressure

Reg.191 Dished ends of Lancashire and Cornish Type Boilers

Reg.192 Dished shell and firebox crowns

Reg.193 Flat plates supported by solid screwed stays, marginal seams or flanges

Reg.194 Flat plates supported by stays and nuts and large washers or strips or

doublings

Reg.195 Flat tube plates

Reg.196 Plates supported by gusset stays

Reg.197 Flat Crown plates of Vertical Boilers

Reg.198 Circular flat ends of drums, etc., supported only at edges

Reg.199 Bar or bulb stiffened end plates and smoke-box tube plates of Loco-typeboilers

Reg.200 Flat plate margins


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Reg.201 Manholes and Mudholes in Flat Plates

Reg.202 Solid screwed stays

Reg.203 Stresses in steel jointed stays

Reg.204 Stay Tubes

Reg.205 Stays in tension and compression

Reg.206 Measurements of stayed areas in the end plates of Locotype and VerticalBoilers

Reg.207 Gusset Stays

Reg.208 Bolts and Studs

Reg.209 Compression of tube plates

Reg.210 Parts to be stayed

Reg.211 Minimum thickness and cross-section

Reg.212 Holding power of plain tubes

Reg.213 Tubes plates, other than ends of vertical boilers forming parts of outer shell

Reg.214 Curved tube plates of water-tube boilers

Reg.215 Efficiency of Ligament

Reg.216 Boiler and Superheater Tubes Subject to Internal Pressure

Reg.217 Headers and Section Boxes of Water Tube Boilers

Reg.218 Boiler Tubes (Smoke) Subject to External Pressure

Reg.219 Brass and Copper Tubes

Reg.220 Plain Furnaces of Horizontal Boilers

Reg.221 Corrugated Furnaces of Horizontal Boilers

Reg.222 Plain Furnaces of Vertical Boilers

Reg.223 Hemispherical Furnaces of Vertical Boilers

Reg.224 Corrugated Fireboxes of Vertical Boilers

Reg.225 Foundations of Vertical Boiler Furnaces

Reg.226 Foundations of Loco-type Boiler Fireboxes

Reg.227 Cross Tubes

Reg.228 Uptakes of Vertical Boilers

Reg.229 Girder stay for firebox crowns

Reg.230 Marshall Type

Reg.231 Garrett Type

Reg.232 Fowler Type

Reg.233 Fusion Welded and Seamless Forged Drums for Water Tube Boilers andSuper Heaters

Reg.234 Materials of Construction

Reg.235 Seamless Forged Drums

Reg.236 Chemical Analysis

Reg.237 Freedom from defects


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Reg.238 Heat Treatment

Reg.239 Mechanical Tests

Reg.240 A Selection of Test Pieces

Reg.240 B Tensile test pieces

Reg.240 C Tensile test

Reg.240 D Bend test pieces

Reg.240 E Bend TestsReg.241 Additional tests before rejection

Reg.242 Discard

Reg.243 Forging

Reg.243 A Tolerance

Reg.244 A Tubes, Pipes in Boilers, Headers and Steel Castings

Reg.244 B Pipes

Reg.245 Headers

Reg.246 Steel CastingsReg.247 Fusion Welded Drums

Reg.248 Equipment of Workshop

Reg.249 Constructional details and preparation for welding

Reg.250 Preparation of plates

Reg.251 Cylindrical shells of drums

Reg.252 Method of making welded joints

Reg.253 Type of welded joints

Reg.254 Number of joints

Reg.255 Position of the Tube holes

Reg.256 Circularity of drums

Reg.257 Mechanical test and test plates for fusion welded seams

Reg.258 Selection of Test Pieces*

Reg.259 Tensile Test Pieces

Reg.260 A Tensile Tests

Reg.260 B All-weld Metal

Reg.261 Bend Test Pieces

Reg.262 Bend Tests

Reg.263 Notched-Bar Impact Tests


Reg.265 A Non-Destructive Tests

Reg.265 B Radiographical Examination

Reg.265 C Magnetic particle flaw detection

Reg.265 D Dye-Penetrant flaw detection


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Reg.266 A General

Reg.266 B Longitudinal Seams

Reg.266 C Circumferential Seams

Reg.266 D Removal of Defects

Reg.266 E Examination before Re-welding

Reg.266 F Process used for Repairs

Reg.266 G Radiographical Examination after RepairsReg.266 H Specimen Representing Repairs

Reg.266 I Diagram of Welded Repairs

Reg.267 A Heat Treatment

Reg.267 B Heat Treatment

Reg.267 C Heat Treatment

Reg.267 D Heat Treatment

Reg.267 E Heat Treatment

Reg.267 F Heat TreatmentReg.267 G Heat Treatment

Reg.268 Hydraulic test at makers works

Reg.269 Inspection and Testing

Reg.270 Shells

Reg.271 Permissible working stresses for shells of Boiler and Integral Super-heaterDrums and Headers

Reg.271 A Permissible working stresses for shells of Boiler and Integral Super-heaterDrums and Headers

Reg.271 B Permissible working stresses for shells of Boiler and Integral Super-heaterDrums and Headers

Reg.272 Fusion Welded and Seamless Forged Drums for Water Tube Boilers andSuper Heaters

Reg.273 Longitudinal Stress

Reg.274 Intermediate Boiler Drum Supports

Reg.275 Shape of Dished End Plate

Reg.276 General

Reg.277 Dished End with Opening

Reg.278 End Plate subject to pressure on the concave side

Reg.279 A Standpipes and Nozzles

Reg.279 B Standpipe and nozzles welded to dished end plates

Reg.279 C Minimum thickness of Flanges

Reg.280 Attachment of Stand blocks and Branch Pipes by Welding

Reg.281 Requisite Mountings, Fittings and Auxiliaries

Reg.281 A Additional requirements for automatic boilers only

Reg.282 A General Requirements


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Reg.282 B Limits of cast Iron

Reg.282 C Limits of copper alloy

Reg.283 Method Of Construction

Reg.284 Packing of Cocks

Reg.285 Covers and Spindles

Reg.286 Direction of Operation

Reg.287 Moving PartsReg.288 Flanges

Reg.289 Valve Seatings

Reg.290 Chests etc., in General

Reg.291 Special Requrements

Reg.292 Definition

Reg.293 Minimum Aggregate Area

Reg.294 Over pressure of Safety Valves

Reg.295 Pressure DropReg.296 Attachment to Boiler

Reg.297 Opening in Shell

Reg.298 Discharge Passage

Reg.299 Drainage

Reg.300 Moving Parts

Reg.301 Bearings for Levers

Reg.302 Attachments of weights and Springs

Reg.303 Easing Gear

Reg.304 Lift

Reg.305 High and Low water Alarms

Reg.306 Final Settings

Reg.306 A Adjustment of safety valve set pressure

Reg.307 A Springs And Torsion Bars

Reg.307 B Torsion Bars

Reg.308 Dimensions

Reg.309 Determination of Working Pressure

Reg.310 Test

Reg.311 Extension Springs

Reg.312 Number of Effective Coils

Reg.313 Spacing of Coils

Reg.314 Finishing of Ends

Reg.315 Lever Valves

Reg.316 Steam Stop Valve


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Reg.317 Blow-Down Cock Or Valve And Pipes

Reg.318 Blow-down Mountings

Reg.319 Blow-down Valve or Cock

Reg.320 Water Gauges

Reg.321 Drains

Reg.322 Protectors

Reg.323 Glass sizeReg.324 Safety Devices

Reg.325 Gauge columns

Reg.326 Isolating Cocks

Reg.327 Pressure Gauges

Reg.328 Connections

Reg.329 Gauge Cocks

Reg.330 Test Connections-Inspectors Pressure Gauge Attachment

Reg.331 Fusible PlugsReg.332 Type

Reg.333 Material

Reg.334 Attachment to Boiler

Reg.335 Feed Valves

Reg.336 Operating position

Reg.336 A Requirements as to feed apparatus in certain cases

Reg.337 Material and Construction

Reg.338 Boiler and Super Heater Tubes, Headers and other Pressure Parts Tubes

Reg.339 Materials and Construction

Reg.340 Rectangular Headers Symmetrical in Form

Reg.341 Headers Irregular in Form

Reg.342 (a) Cylindrical Headers

Reg.342 (b) End Attachments

Reg.343 Pipes

Reg.344 Material

Reg.345 Condition of Pipes

Reg.346 Mechanical Tests

Reg.347 (a) Flattening test (for pipes up to and including 102 mm. (4 in.) Nominal bore)

Reg.347 (b) Cold bend test (for pipes over 102 mm. (4in.) Nominal bore)

Reg.347 (c) Bend test on the weld

Reg.347 (d) Additional test

Reg.347 (e) Tensile test

Reg.347 (f) Steam-Pipes and Fittings


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Reg.348 Method of manufacture, Heat treatment and Marking

Reg.349 Steam-Pipes and Fittings

Reg.350 Steel Pipes

Reg.351 Cast Steel Pipes

Reg.352 Copper Pipes

Reg.353 A Flanges

Reg.353 B Flanges of Alloy Steel PipesReg.353 C Non-Ferrous Flanges

Reg.354 Screwed on Flanges

Reg.355 Loose Flanges

Reg.356 Riveted on Flanges

Reg.357 Welded on flanges

Reg.357 C Heat treatment after welding

Reg.358 Flanges of copper pipes

Reg.359 Standard Flanges

Reg.360 Joints

Reg.361 Wrought Bends

Reg.361 A Butt-welding fittings

Reg.362 A Branches, Bosses and Drain pockets

Reg.362 B External reinforcement

Reg.362 C Thickness where no external reinforcement is provided

Reg.363 Blowdown pipes

Reg.364 Valves Chests

Reg.365 A Steam Receivers, Separators, Catch Waters, Accumulators and SimilarVessels

Reg.365 B Construction and Workmanship

Reg.365 C Access to shells

Reg.365 D Compensating Rings to Opening and Doors

Reg.365 E Branches and other Connections

Reg.365 F Shell Joints

Reg.366 Determination of Working PressureReg.366 B End Plates

Reg.366 C Branches

Reg.366 D Inspection during construction

Reg.367 Steel Screwed and Socketed Joints and Mountings of Steel

Reg.368 Bronze Screwed and Socketed joints and mountings and fittings of bronze

Reg.369 Reducing Valve

Reg.370 Flexibility


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Reg.371 Pipe work supports

Reg.372 Drainage

Reg.373 Freedom from rust and other foreign matter

Reg.374 Steam-Pipes and Fittings

Reg.375 Regulations for the Registration of Boilers and Inspection of Boilers andSteam-Pipes

Reg.376 Preparation for Inspection

Reg.377 Hydraulic test of boilers for registration

Reg.378 Preparation for hydraulic tests

Reg.379 Procedure of hydraulic tests

Reg.380 Steam tests

Reg.381 Procedure for registration

Reg.382 Engraving of registry number

Reg.383 Measurement of heating surface

Reg.384 Boiler rating

Reg.385 Registration fee

Reg.386 Memorandum of Inspection Book

Reg.387 Registration Book

Reg.387 A Maintenance of Records

Reg.388 Transfer of Memorandum of Inspection Book and Registration Book

Reg.389 Grant of certificate

Reg.390 Procedure for inspection of installed boilers

Reg.390 B Scale Oils, etc

Reg.390 C Corrosion, Grooving

Reg.390 D Stays

Reg.390 E Manholes and other Openings

Reg.390 F Fire Surfaces.-Bulging, Blistering, Leaks

Reg.390 G Lap Joints, Fire Cracks

Reg.390 H Testing Staybolts

Reg.390 ITubes -Their defects, etc

Reg.390 J Ligaments between tube holesReg.390 K Steam Pockets

Reg.390 L Pipe Connections and Fittings

Reg.390 M Water column

Reg.390 N Baffling-Water tube boilers

Reg.390 O Localization of heat

Reg.390 P Suspended boilers-Freedom of expansion

Reg.390 Q Safety Valves


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Reg.390 R Steam Gauges

Reg.391 Calculation of Wasted Shell

Reg.391 A Aging of boilers

Reg.392 Repairs to boilers and steam pipes

Reg.392 A Repairs to boilers and steam pipes

Reg.392 B Welding

Reg.392 C Riveting and Other RepairsReg.392 D Regulations for the Registration of Boilers and Inspection of Boilers and

Steam-Pipes

Reg.392 E Regulations for the Registration of Boilers and Inspection of Boilers andSteam-Pipes

Reg.392 F Regulations for the Registration of Boilers and Inspection of Boilers andSteam-Pipes

Reg.392 G Regulations for the Registration of Boilers and Inspection of Boilers andSteam-Pipes

Reg.392 H Regulations for the Registration of Boilers and Inspection of Boilers andSteam-Pipes

Reg.392 I Regulations for the Registration of Boilers and Inspection of Boilers andSteam-Pipes

Reg.392 J Regulations for the Registration of Boilers and Inspection of Boilers andSteam-Pipes

Reg.392 K Regulations for the Registration of Boilers and Inspection of Boilers andSteam-Pipes

Reg.392 L Regulations for the Registration of Boilers and Inspection of Boilers andSteam-Pipes

Reg.392 M Regulations for the Registration of Boilers and Inspection of Boilers andSteam-Pipes

Reg.392 N Regulations for the Registration of Boilers and Inspection of Boilers andSteam-Pipes

Reg.392 O Regulations for the Registration of Boilers and Inspection of Boilers andSteam-Pipes

Reg.392 P Regulations for the Registration of Boilers and Inspection of Boilers andSteam-Pipes

Reg.393 Regulations for the Registration of Boilers and Inspection of Boilers andSteam-Pipes

Reg.394 Inspections of Steam Pipe

Reg.395 Submission of plans of steam-pipes

Reg.395 A Inspection fee for boilers and parts thereof constructed in India

Reg.395 B Fees for inspection of Pipes

Reg.395 C Fee for inspection of valves

Reg.395 D Fees for inspection of components of valves

Reg.395 E Fees for inspection of feed water heaters and other fittings

Reg.395 F Marking

Reg.395 G Fee for inspection of spares and scantlings


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Reg.397 Electrode Boilers



Reg.400 Riveted Steel Boilers

Reg.401 Working Pressure of Shells

Reg.402 Strength of Riveted Joints

Reg.403 Thickness of Butt-StrapsReg.404 Maximum pitch of rivets in Longi tudinal Joints

Reg.405 Spacing of rows of rivets

Reg.406 End and Circumferential Seams

Reg.407 Manholes and other openings in Shells

Reg.408 Dished End Plates with pressure on concave side

Reg.409 Seating for Mounting

Reg.410 Flange-Thickness and Drilling

Reg.411 PadsReg.412 Unstayed Flat-End Plates

Reg.413 Thickness of Angle Rings

Reg.414 Bolts, Nuts and Studs


Reg.416 Construction and Workmanship

Reg.417 Selection of Test pieces

Reg.418 Tensile test

Reg.419 Bend Test

Reg.420 Nick Break Test

Reg.421Retests

Reg.422 Specimens after Tests

Reg.423 Heat Treatment

Reg.424 Hydraulic and Hammer Test

Reg.425 Determination for Working Pressure

Reg.426 Welds and compensation for manholes and branches

Reg.427 Manholes and other openings in Shells

Reg.428 Dished End Plates with pressure on Concave side

Reg.429 Unstayed Flat End Plates

Reg.430 Thickness of Angle Rings

Reg.431 Tests for Class II Fusion Welded Seams

Reg.432 Tests for Class II Fusion Welded Seams


Reg.434 Determination of Working Pressure


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Reg.435 End Plates

Reg.436 Manholes and other opening in the Shells

Reg.437 Mountings, Fittings and Connections (For all types of Electrode Boilers)

Reg.500 Application of standard conditions and exceptions thereto

Reg.501 General requirements

Reg.502 Modification of formula

Reg.503 Makers Certificates for Steel EconomisersReg.504 Hydraulic test for new economisers

Reg.505 Workmanship and manufacture


Reg.507 Test bars

Reg.508 Number of tensile tests

Reg.509 Standard test piece

Reg.510 Cast Iron Economisers

Reg.511 Joint bolts and studs for Cast Iron EconomisersReg.512 Economiser water outlet temperature

Reg.513 Tubes: Construction

Reg.514 Tubes: Working Pressure

Reg.515 Headers: Construction

Reg.516 A Working Pressure

Reg.516 B Cylindrical headers

Reg.517 Attachment of tubes to headers

Reg.518 Joint bolts, studs and flanges

Reg.519 A Valves and Mountings

Reg.519 B Relief valves

Reg.519 C Pressure Gauge

Reg.519 D Air Release valves

Reg.519 E Below off drain valves

Reg.519 F Non-return valves in return feed line

Reg.519 G Reserve Flues

Reg.519 H Explosion Doors

Reg.519 I Hydraulic Test

Reg.519 J Feed Line

Reg.519 K Non-return valve

Reg.520 Feed Pipes

Reg.521 Steel feed pipes

Reg.522 Cast Iron feed pipes

Reg.523 Copper feed pipes

Reg.523 A Feed Heaters and similar vessels fitted to feed pipes


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Reg.523 B Working Pressure

Reg.523 C Safety valve requirement in Feed Heaters and similar vessels

Reg.524 Regulations for Registration and Inspection of Economisers and Feed Pipes

Reg.525 Procedure for Registration

Reg.526 Procedure at subsequent inspection

Reg.527 Procedure for Hydraulic test

Reg.528 Memorandum of Inspection Book

Reg.529 A Registration Books

Reg.529 B Transfer of Memorandum of Inspection Book and Registration Books

Reg.530 Grant of certificate

Reg.531 Casual visits

Reg.532 Economiser rating

Reg.533 Registration fee

Reg.534 Engraving of registry number

Reg.534 A Inspection of Feed Pipes

Reg.534 B Submission of plans of Feed Pipes

Reg.535 Shell type Boilers of Welded Construction

Reg.536 General Requirements

Reg.536 A Equipment of Workshop

Reg.537 Materials of Construction

Reg.538 Covered Electrodes

Reg.539 A Plain and Stay Tubes

Reg.539 B Seamless Steel Crosstubes and uptake Tubes

Reg.540 Construction and Workmanship

Reg.541 Preparation of Plates

Reg.542 Stress Relieving

Reg.543 Cylindrical Shells

Reg.544 Circularity

Reg.545 End Plates, Crown Plates and Tube Plates

Reg.546 Internal Flues

Reg.547 A Fireboxes and Combustion Chambers

Reg.547 B Hemispherical fireboxes

Reg.547 C Loco-type fireboxes

Reg.547 D Water-cooled combustion chambers

Reg.548 Uptakes

Reg.549 Cross Tubes

Reg.550 Bar stays and Firebox stays

Reg.551 Girder stays for Firebox and Combustion Chamber Crowns


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Reg.552 Gusset stays

Reg.553 Access

Reg.554 Manhole frames, mouthpieces and doors

Reg.555 Seatings for mountings

Reg.555 A Standpipes

Reg.555 B Saddles

Reg.555 C PadsReg.555 D Attachment of Standpipes

Reg.555 E Tensile Tests

Reg.555 F Attachment of water and pressure gauges

Reg.555 G Bolts and Nuts

Reg.556 Compensating plates

Reg.557 Definition of the terms Fusion Weld

Reg.558 Method of Welding

Reg.559 Types of welded shell seamsReg.560 Repairs to welded seams

Reg.561 A Tests on welded seams

Reg.561 B Test for Class I boilers

Reg.561 C Test for Class II Boilers

Reg. 561 D Test for Class III boiler


Reg.563 Classification of Fusion-Welded Boilers

Reg.564 Shells

Reg.565 Horizontal shelves of tube plates forming part of the shell

Reg.566 Dished end plates for Lancashire and Cornish boilers

Reg.567 Dished ends subject to internal pressure

Reg.567 A Dished ends subject to internal pressure

Reg.568 Dished ends subject to external pressure

Reg.569 Hemispherical crowns

Reg.570 Manholes and other openings in shells

Reg.571 Compensation for openings in shells

Reg.571 A Area to be compensated

Reg.571 B Compensating area

Reg571 C Compensating plates

Reg571 D Compensation for openings in shells

Reg.572 Raised manhole frames, cover plates and joint bolts


Reg.574 Stayed Flat surfaces (other than Crowns of Vertical Boilers).


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Reg.575 Flat crown plates for vertical boilers

Reg.576 Wide water spaces between and around tube nests

Reg.577 A Flat tube plates and tube nests

Reg.577 B Parts of flat plates within tube nests

Reg.578 Manhole openings in flat plates

Reg.579 A Plain tubes

Reg.579 B Plain tubesReg.579 C Plain tubes

Reg.579 D Plain tubes

Reg.580 Pitch of tubes

Reg.581 Stay tubes

Reg.582 Compression of tube plates

Reg.583 Girders for fire-box and combustion chamber crowns

Reg.584 Girder sling stays

Reg.585 A Stays for fire-boxes and circular furnacesReg.585 B Circumferential stays for circular furnaces and fire-bo

Reg.586 Fire-box Crown stays for Loco-type Boilers

Reg.587 Longitudinal Bar Stays

Reg.588 Loads on Stay Tubes and Bar Stays

Reg.589 Flat Plate Margins

Reg.590 Breathing space

Reg.591 Gusset Link, Brace and Similar Stays

Reg.591 A Load on each stay

Reg.591 B Gusset plates

Reg.591 C Link stays

Reg.591 D Anchor plates angles, link pins and the line members

Reg.591 E Weld attachment


Reg.593 Plain Furnaces of Vertical Boilers

Reg.594 Corrugated Fireboxes of Vertical Boilers

Reg.595 Hemispherical Furnaces of Vertical Boilers

Reg.596 Foundations of Vertical Boilers Furnaces

Reg.597 Foundations of Loco-type Boiler Fireboxes

Reg.598 Uptakes of Vertical Boilers

Reg.599 Cross Tubes

Reg.600 Pads Welded to shell or the attachment of Flanged Mountings


Reg.602 Qualification Tests for Welders Engaged in Welding of Boilers and Steam-Pipes under Construction, Erection and Fabrication at Site in India and in


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Repairing Boilers and Steam-Pipes by Weldingt

Reg.603 Definition

Reg.604 Engaging of Certified Welders

Reg.605 Initial

Reg.605 A Issue of duplicate certificate

Reg.606 Production of certificate

Reg.607 A Validity of certificateReg.607 B Re-validation of certificate

Reg.607 C Validity of certificate

Reg.608 Age and experience

Reg.609 Tests for initial qualification of a welder

Reg.610 Tests for Requalification

Reg.611 A Examination of test specimens for initial qualification tests

Reg.611 B Fillet welded plate specimens

Reg.611 C Groove and fillet welded pipe and tube specimensReg.611 D Welded Tube Joints

Reg.611 E Additional tests before rejection

Reg.612 Examination of Test Specimens for Requalification Tests

Reg.613 Awarding of Marks

Reg.614 Award of Certificate

Reg.615 Maintenance of records

Reg.616 Fees for examination of welders

Reg.617 Penalty

Reg.618 Small Inductrial Boilers General

Reg.619 Definition

Reg.620 Extent to which variation from the standard conditions laid down in thepreceding Chapters is permissible

Reg.621 Valves, Gauges, Fittings and Feed Supply

Reg.622 Registration, Operation and Maintenance

Reg.623 Feed Water for Boiler

Reg.624 Requirements

Reg.625 Sampling

Reg.626 Test Methods

Reg.627 Deleted

Reg.628 Deleted

Reg.629 Deleted

Reg.630 A Deleted

Reg.630 B Deleted

Reg.630 C Deleted


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Reg.630 D Deleted

Reg.631 Deleted

Reg.632 Deleted

Reg.633 Deleted

Reg.634 Deleted

Reg.635 Deleted

Message from Chairman of Central Boilers BoardAbout Central Boiler BoardHistory of Indian BoilerRegulationsForeword Contents Chapter WiseContents Regulation Wise List of Amendments

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Indian Boilers Regulations - 1950