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PMPSA44 Gas Test _ Purge Procedure PRINTED

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PMPSA44 Gas Test _ Purge Procedure PRINTED Powered By Docstoc
					BNHJV
Form H&S/032 Company Gas Procedures

Ref: PMP/S/A44

INDUSTRIAL & COMMERCIAL NATURAL GAS SOUNDNESS TESTING & PURGING

GUIDANCE PROCEDURE AND RECORD

FOR INSTALLATIONS UP TO 200mm DIAMETER, OPERATING PRESSURES UP TO 30 mb, WHEN USING WATER GAUGES.

Date Client

: :

Address

:

Location : Name of Installation Fitter/Fitters: Date of Installation Completion: Completed Data Sheets Checked by: ____________Inspector Inspectors CORGI Registration No._____________________

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Form H&S/032 Company Gas Procedures Introduction

Ref: PMP/S/A44

This form provides a pro-forma to allow a specific record and working document for individual installations. It is updated from time to time, however, the user must ensure that all current requirements are followed, e.g. IGE/UP/1 edition 2, is not yet built into this form. That is planned for 2006, along with updates to reflect latest guidance on “Tightness and Pressure Testing of Existing Non-domestic Installations” This guidance procedure has been produced by Haden Young Limited, for the purpose of supplementing the guidance given by IGE/UP/1, other relevant publications, good working practice, and the training courses given by the Company. It is intended to give a basic framework, to cover most of the installations encountered by a Haden Young engineer. If the procedure is unsuitable, it is strongly advised that the responsible engineer uses his own judgment to make it suitable. Contact the Area office Gas Inspector for further information.

Procedure
For each gas installation a gas procedure data form must be completed by the gas Installer or Inspector. This form is part of Haden Young Q.A. system and is part of the Corgi audit that is completed each year to enable Haden Young to retain registration. Each branch carries the necessary equipment to complete purging operations. The Industrial and Commercial Natural Gas Soundness Testing and Purging Procedure is shown below. This procedure includes sections covering the following items:Installation Inspection Report Form Soundness Testing New Installation Soundness Testing Existing Installation Pre-Purging Risk Assessment ) applicable to both ) new and existing Purging ) installations

Installation Inspection Survey the installation to be tested recording pipework lengths, diameters, position of valves and controls, accuracy of any drawings. Make a sketch of the installation below and complete the form overleaf. Inform the person responsible of any unsafe situations.

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Form H&S/032 Company Gas Procedures Client: Address

Ref: PMP/S/A44

QUALITY INSPECTION REPORT
Date of Inspection

Location of Installation: DETAIL
Line diagrams are correct and complete Line diagrams found in correct locations Pipework correctly sleeved and sealed Emergency control valves located correctly Emergency control valves operate correctly Emergency control valves I.D correct Adequate test points and purge point Cross bonding correctly located and installed Pipework I.D. to BS1710 Ducted Pipework installed correctly Buried pipework installed correctly Open ends capped/plugged on visit Welding, jointing to appropriate standard Protection against mechanical damage Protection against corrosive damage Supporting of pipework correct Fixings of support method correct Any smell of gas (Others) Any “At Risk Situtations” Has Unsafe Procedures Notice been issued Ventilation Adequate Has Flue Integrity been Certified/Proven

New/Existing Y-N-N/A COMMENTS

If YES append details If YES append details

If YES append details

Installation Turned Off Yes  No  : No 

Warning Labelled Yes 

TEST APPLIANCE TYPE AND No………………………………………………… Responsible Engineer (Print)……………………………………………………... Signed............................................Date...................................... Position........................................................................................

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Form H&S/032 Company Gas Procedures Soundness testing of new Installations STEP 1 – Determination of the System Volume

Ref: PMP/S/A44

Using specific volume tables, complete the installation volume table below Meter Type Volume ( dm3 ) Meter Type Volume ( dm3 ) P1 or D1 12 U40 67 P2 or D2 26 P18 148 U6 8 U65 100 P4 or D4 46 P30 257 U16 25 U100 182 P7 86 P60 409 U25 36 U160 304 P12 97 760

INSTALLATION VOLUME

PIPE DIAMETER ( mm )

PIPEWORK LENGTH (m)

CALCULATED VOLUME ( dm3 )

+ADDITIONAL 10 % FOR VALVES & FITTING

METER SIZE TOTAL INSTALLATION VOLUME DM3 1000

M3

( 1000 dm3 = 1m3 )

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Form H&S/032 Company Gas Procedures STEP 2 – Determination of Test Pressure

Ref: PMP/S/A44

In all cases this will be 45mbar. (Assuming the default pressure to be 30mb). Where street node pressure exceeds 30 mbar, test pressure should reflect 1.5 times street node pressure.

CHOSEN TEST PRESSURE

( mbar )

STEP 3 – Calculation of the Test Period Using the formula:-

VOLUME ( m3 ) x 10.715 = TEST PERIOD ( minutes )
*Round your answer up to the nearest minute *No less than 2 minutes, no more than 15 minutes *If test period greater than 15 minutes consider sectionalising system

TEST PERIOD ( minutes ) = __________________________________ STEP 4 – Calculation of Maximum Allowable Pressure Drop Using the formula, calculate how much the gauge may drop during the soundness test.

TEST PERIOD ( min ) x 0.0233 MAXIMUM PRESSURE DROP ALLOWABLE ( mbar ) = _________VOLUME ( m3 ) Note! New installations should be NIL pressure drop. NOW complete Section A of the soundness testing certificate N, and carry out soundness test. ( Use Procedure N as a guide ). Complete Sections B and C, purge the installation, complete Section C; after 3- 4 days, complete Sections E and F.

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Form H&S/032 Company Gas Procedures Soundness Testing Procedure „N‟ 1. 2. Ensure temperature conditions are stable

Ref: PMP/S/A44

Bypass any components that may “trap” the gas pressure ( e.g., governors, non-return valves, safety shut off valves etc ). Plug/spade off inlet valve and all pipe ends ( label valves ). Attach gauge and test tee. Pressurise to test pressure with air or inert gas and then isolate supply. Allow temperature to stabilise for the test period or 15 minutes ( whichever is greater ). Top up pressure if required. Note and record any pressure drop over the test period ( no perceptible movement). Check all joints with leak detection fluid. Prior to purging the risk assessment on page18 must be completed. The % reading of gas must be taken, prior to purging from the live side and the result entered .on the purge certificate. Tests to be completed after purging into service. Check with a suitable gas detector and record readings. ( Checks also to be carried out 3 - 4 days later ). Commission installation and appliances Complete test forms and documentation.

3. 4. 5. 6. 7. 8.

9. 10. 11.

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SECTION A
Operating Pressure 3 m Test Pressure Street node pressure Max P. drop allowable gas / inert gas ............ mbar :

Ref: PMP/S/A44

Form H&S/032 Company Gas Procedures Soundness Testing Certificate “N” New Installation
Total Installation Volume ............

............ mbar :

Test Period

...........min

…………………………………. ............ mbar : Pressure test medium Air /

SECTION B
Temperature conditions stable Let by period ............min YES/NO : Temperature Stabilisation Period ............ mins :

SECTION D ( After purging into service )
days ) All joints checked with gas detector detectors YES / NO Potentially hazardous areas checked checked YES /NO Any smells of gas detected YES /NO YES / NO

SECTION E ( Complete after 3 - 4
All joints checked with gas

YES / NO

Potentially hazardous areas

YES / NO

Any smells of gas detected

SECTION F INSTALLATION Pass  Fail  (tick box)

TEST APPLIANCE TYPE AND No……………………………… Responsible Engineer (Print)................................................. Sign.......................................Date............................................ Position..................................................................................... Any Further Action

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STEP 1 – Determination of the System Volume

Ref: PMP/S/A44

Form H&S/032 Company Gas Procedures Soundness Testing Certificate “N” Existing Installation

Using specific volume tables, complete the installation volume table below Meter Type Volume ( dm3 ) Meter Type Volume ( dm3 ) P1 or D1 12 U40 67 P2 or D2 26 P18 148 U6 8 U65 100 P4 or D4 46 P30 257 U16 25 U100 182 P7 86 P60 409 U25 36 U160 304 P12 97 760

INSTALLATION VOLUME

PIPE DIAMETER ( mm )

PIPEWORK LENGTH (m)

CALCULATED VOLUME ( dm3 )

+ADDITIONAL 10 % FOR VALVES & FITTING

METER SIZE TOTAL INSTALLATION VOLUME DM3 1000 M3

( 1000 dm3 = 1m3 )

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Form H&S/032 Company Gas Procedures STEP 2 – Determination of the Test Pressure

Ref: PMP/S/A44

The test pressure must be at least the maximum operating pressure (The responsible engineer may choose a higher pressure).

CHOSEN TEST PRESSURE ___________________________( mbar )

STEP 3 – Calculation of the Permitted Leak Rate Complete the table below, specifying the different areas where the installation is found. MAXIMUM PERMITTED RELEASE RATES 0.0014 m3 / h

Potentially Hazardous Areas

Pipework in occupied areas ( under 60m3 ) 0.0005 m3 / h for every m3 of room vol. Large open work areas and pipework underground or outside 0.03 m3 / h

POTENTIALLY HAZARDOUS, L.O.W. AREAS, OUTSIDE AND UNDERGROUND AREA PLR

OCCUPIED AREAS AREA VOL.m3 PLR

Take the lowest PLR if the areas are not separated by sectional valves. PERMITTED LEAK RATE _______________( m3 / h ) ( Must not exceed 0.03m3 / h )

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Form H&S/032 Company Gas Procedures STEP 4 – Calculation of the Test Period Using the formula

Ref: PMP/S/A44

0.03 x VOLUME ( m3 ) . PERMITTED LEAK RATE ( m3 / h ) = _______ TEST PERIOD (min‟s. )
*Round your answer up to the nearest minute *No less than two minutes, no more than 15 minutes

STEP 5 – Calculation of the Maximum Pressure Drop Using the formula, calculate how much the gauge may drop using the soundness test. TEST PERIOD ( min ) x PERMITTED LEAK RATE ( m3 / h ) VOLUME ( m3 ) x 0.06 MAXIMUM PRESSURE DROP ALLOWABLE = ________________( mbar )

Now complete Section A of the soundness testing Certificate E and carry out the soundness test ( use procedure E as a guide ), complete Sections B and C, purge the installation if required, complete sections D and E.

Soundness Testing Procedure “E” 1. 2. Ensure temperature conditions are stable Bypass any components that may “trap” the gas pressure ( e.g., governors, non return valves, safety shut off valves, etc ) Turn off all appliances and installation inlet valve ( label valves ) Attach gauge and test tee Reduce or pressurise installation to 50% of the test pressure Ensure inlet valve is turned off Observe gauge for the same time as the test period. Provided the pressure does not rise more than the minimum gauge reading, the

3. 4. 5.

6.

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Ref: PMP/S/A44

Form H&S/032 Company Gas Procedures inlet valve may be considered satisfactory for the remainder of the test ( let by ). A noticeable drop during this period may indicate an unacceptable leak which must be traced and repaired. Following any repair, repeat the inlet valve let-by test from 5 above 7. Pressurise the system, inlet valve turned on, and allow the temperature to stabilise for the test period or 15 minutes (whichever is the greater) When the temperature has stabilised, isolate supply and observe the gauge at the test pressure for the test period. Note and record any drop. Ensure this does not exceed the maximum pressure drop allowable Once a satisfactory soundness test has been achieved, check all joints with leak detection fluid. Prior to purging the risk assessment on page 18 must be completed. A % reading of gas must be taken prior to purging from the live side. This % must entered in the purging certificate. Tests to be completed after purging into service 10. 11. Check all joints with a suitable gas detector and record readings Commission the installation and appliances, complete test forms and documentation.

8.

9.

Soundness Testing Certificate “E” SECTION A
Operating Pressure Test Pressure Max P. drop allowable gas / inert gas ............ mbar : ............ mbar : ............ mbar :

Existing installation
Total Installation Volume Test Period Pressure test medium ........... m
3

...........min Air /

SECTION B
Temperature conditions stable Let by period ............min YES/NO : Temperature Stabilisation Period ............ mins :

(Note! References to sections C and E omitted)

SECTION D ( After purging into service )
All joints checked with gas detector checked YES / NO YES / NO : Potentially hazardous areas

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Form H&S/032 Company Gas Procedures
Any smells of gas detected YES / NO

Ref: PMP/S/A44

SECTION F INSTALLATION Pass  Fail  (tick box)

TEST APPLIANCE TYPE AND No……………………………… Responsible Engineer (Print)................................................. Sign.......................................Date............................................ Position..................................................................................... Any Further Action ………………………………………………………………………………………… ………………………………………………………………………………………… …………………………………………………………………………………………

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Form H&S/032 Company Gas Procedures Pre-purging risk assessment

Ref: PMP/S/A44

Ensure general considerations of IGE/UP/1 are complied with, observe paths that purge gas can take, necessary equipment like fire extinguishers, communication systems and procedure has been written if required. Complete the table below detailing your concerns and action taken to remedy, in conjunction with current job specific risk assessment. Nature of concern or risk Action taken to prevent risk
Fire & Fire Protection

Signage

Information to non-employees and employees

At heights

Excavations

Emergency procedures

Positioning of purge stack

Safe use of purge gas

Awareness of electrical equip.

Responsible Engineer (Print)................................................ Sign..................................... Date............................................ Position...................................................................................

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Form H&S/032 Company Gas Procedures Purging STEP 1 – Calculation of Purge Volum Meters

Ref: PMP/S/A44

- Diaphragm type [ 5 times badged capacity ( per rev ) ] - Other types ( 1.5 times the equivalent diameter of pipe )

Pipework

- At least 1.5 times the volume of the pipework inclusive of fittings

PURGE VOLUME OF METERS PURGE VOLUME OF PIPEWORK TOTAL INSTALLATION PURGE VOLUME

dm3 dm3 dm3

_________m STEP 2 – Determination of Branch Purging Orders

3

With respect to branch size, diameter, length, availability of valves, determine the order in which branches or sections will be purged. NOTE If no isolation/section is available, consider multiple purge stack/turn over operation. In all cases check % gas content at incoming main prior to meter before carrying out system

purge. BRANCH PURGING ORDER

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Form H&S/032 Company Gas Procedures STEP 3 – Calculation of Purging Times
Nominal pipe diameter to be purged ( mm ) 20 25 32 40 50 65 80 100 125 150 200 Minimum purge velocity,primary pipework ( m / s ) 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.7

Ref: PMP/S/A44

Maximum purge length in primary pipework ( m ) no limit no limit no limit no limit no limit no limit no limit no limit no limit no limit ***500***

Minimum purge rate in primary pipework 3 (m /h) 0.6 1.0 1.7 2.5 4.5 7.20 11 17 26.50 38 79

From the table above, determine required purge velocities, rates and calculate purge times to ensure flow rates.

ADD
PIP E NOM LTH VOLUME FROM ATT APPENDIX BRANCH ID DIAMETER (M) DM DM3 STACK & HOSE VOLUME

TOTAL BRANCH VOLUME INC.

X 1.5

1000

STACK & HOSE DM3

CONVERT TO

MAX PURGE

M3

TIME (SECS)

Using the formula: PURGE VOLUME (m3) X 3600 MINIMUM PURGE RATE (m3/h) = MAXIMUM PURGE TIME (seconds)

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BNHJV

Ref: PMP/S/A44

Form H&S/032 Company Gas Procedures PURGING CERTIFICATE Branch ID Max Time Achieved purge time 1st att. 2nd att (secs)

Volume Achieved* 3rd att %gas %02

* Indicate if live side % pressure is greater than 30 mbar__________________________ Purge complete YES



NO



TEST APPLIANCE TYPE AND No…………………………….. Responsible Engineer (print)................................................ Sign........................................Date.......................................... Position.................................................................................... Any Further action:______________________________________________________

NOTES AND CALCULATIONS

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Form H&S/032 Company Gas Procedures

Ref: PMP/S/A44

The following tables are approximate values for volume, dependant upon the value of SDR (Standard Dimension Ratio). 2.1.1 Pipe Volume Of Typical Section 2.1.2 PE coiled to BS 7281 IMPORTANT: For convenience, the valves are given as three metres cubed multiplied by one thousand. Divide by one thousand to obtain the correct volume in metre cubed. LENGTH (m) 0.5 1 2 3 4 5 6 7 8 9 10 15 20 30 40 50 60 70 80 90 100 SIZE (mm) 20 25 0.09 0.16 0.19 0.33 0.37 0.65 0.56 0.98 0.75 1.3 0.93 1.6 1.1 2.0 1.3 2.3 1.5 2.6 1.7 2.9 1.9 3.3 2.8 4.9 3.7 6.5 5.6 9.8 7.5 13 9.3 16 11 20 13 23 15 26 17 29 19 33

32 0.27 0.53 1.1 1.6 2.1 2.7 3.2 3.7 4.2 4.8 5.3 8.0 11 16 21 27 32 37 42 48 53

55 1.0 1.6 3.2 4.7 6.3 7.9 9.5 11 13 14 16 24 32 47 63 79 95 110 130 140 160

63 1.0 2.1 4.1 6.2 8.3 10 12 15 17 19 21 31 41 62 83 100 120 150 170 190 210

75 1.5 2.9 5.9 8.8 12 15 18 21 24 26 29 44 59 88 120 150 180 210 240 260 290

90 2.1 4.3 8.5 13 17 21 26 30 34 38 43 64 85 130 170 210 260 300 340 380 430

125 4.1 8.2 16 25 33 41 49 57 66 74 82 120 160 250 330 410 490 570 660 740 820

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Form H&S/032 Company Gas Procedures 2.2.1 Pipe Volume Of Typical Section

Ref: PMP/S/A44

2.2.2 PE Straight to BS 7281 IMPORTANT: For convenience, the values are given in metres cubed multiplied by one thousand. Divide by one thousand to obtain the correct volume in metres cubed. LENGTH (m) SIZE (mm) 63 90 SDR 11 1.0 2.1 2.1 4.3 4.1 8.5 6.2 13 8.3 17 10 21 12 26 15 30 17 34 19 38 21 43 31 64 41 85 62 130 83 170 100 210 120 260 150 300 170 340 190 380 210 430

0.5 1 2 3 4 5 6 7 8 9 10 15 20 30 40 50 60 70 80 90 100

90 SDR 17.6 2.5 5.0 10 15 20 25 30 35 40 45 50 75 100 150 200 250 300 350 400 450 500

125 SDR 11 4.1 8.2 16 25 33 41 49 57 66 74 82 120 160 250 330 410 490 570 660 740 820

125 SDR 17.6 4.8 9.6 19 29 39 48 58 67 77 87 96 140 190 290 390 480 580 670 770 870 960

180 SDR 11 8.5 17 34 51 68 85 100 120 140 150 170 260 340 510 680 850 1000 1200 1400 1500 1700

180 SDR 17.6 10 0 40 60 80 100 120 140 160 180 200 300 400 600 800 1000 1200 1400 1600 1800 2000

250

315

400

19 39 77 120 150 190 230 270 310 350 390 580 770 1200 1500 1900 2300 2700 3100 3500 3900

31 61 120 180 240 310 370 430 490 550 610 920 1200 1800 2400 3100 3700 4300 4900 5500 6100

49 99 200 300 400 490 590 690 790 890 990 1500 2000 3000 4000 4900 5900 6900 7900 8900 9900

Note: These are approximate values for volume, dependant upon the value of SDR ( Standard Dimension Ratio.)

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Form H&S/032 Company Gas Procedures 2.3.1 Pipe Volume Of Typical Section

Ref: PMP/S/A44

2.3.2 Steel to BS 1387 IMPORTANT: For convenience, the values are given in metres cubed multiplied by one thousand. Divide by one thousand to obtain the correct volume in metres cubed. LENGT H (m) 0.5 1 2 3 4 5 6 7 8 9 10 15 20 30 40 50 60 70 80 90 100 SIZE (mm) (in) (nominal) 15 20 25 32 (1/2) (1/4) (1) (1/4) 0.12 0.23 0.32 0.55 0.24 0.46 0.64 1.1 0.47 0.92 1.3 2.2 0.71 1.4 1.9 3.3 0.94 1.9 2.6 4.4 1.2 2.3 3.2 5.5 1.5 2.8 3.8 6.5 1.7 3.3 4.5 7.6 1.9 3.7 5.1 8.7 2.2 4.2 5.7 9.8 2.4 4.6 6.4 11 3.6 6.9 9.5 16.2 4.7 9.2 13 22 7.1 14 19 33 9.4 19 26 44 12 23 32 55 15 28 38 65 17 33 45 76 19 37 51 87 22 42 57 98 24 46 64 110

40 (1/2) 0.8 1.5 2.9 4.3 5.7 7.1 8.7 10 12 13 15 22 29 43 57 71 86 100 120 130 150

50 (2) 1.2 2.4 4.7 7 9.4 12 14 17 19 21 24 35 47 70 94 120 140 170 190 210 240

65 (2 1/2) 1.9 3.8 7.7 12 16 19 23 27 31 35 38 58 77 120 160 190 230 270 310 350 380

80 (3) 2.7 5.4 11 16 22 27 32 38 43 48 54 80 110 160 220 270 320 380 430 480 540

100 (4) 4.5 9 18 27 36 45 54 63 72 81 90 140 180 270 360 450 540 630 720 810 900

125 (5) 6.7 14 27 40 55 67 80 93 110 120 140 200 270 400 550 670 800 930 1110 1200 1400

150 (6) 9.6 20 39 58 77 96 120 140 160 180 200 290 390 570 770 960 1200 1400 1600 1800 2000

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Form H&S/032 Company Gas Procedures 2.4.1 Pipe Volume Of Typical Section

Ref: PMP/S/A44

2.4.2 Cast Iron – Class C BS 1211 IMPORTANT: For convenience, the values are given in metres cubed multiplied by one thousand. Divide by one thousand to obtain the correct volume in metres cubed. LENGTH SIZE (mm) (nominal) (m) 80 100 125 150 175 200 225 250 0.5 2.6 4.4 6.7 10 13 17 22 27 1 5.1 8.9 13 20 27 35 44 54 2 10 18 27 40 53 69 88 110 3 15 27 40 60 80 100 130 160 4 21 35 54 80 110 140 180 220 5 26 44 67 100 130 170 220 270 6 31 53 81 120 160 210 260 320 7 36 62 94 140 190 240 310 380 8 41 71 110 160 210 280 350 430 9 46 80 120 180 240 310 390 490 10 51 89 130 200 270 350 440 540 15 77 130 200 300 400 520 660 810 20 100 180 270 400 530 690 880 1100 30 150 270 400 600 800 1000 1300 1600 40 210 350 540 800 1100 1400 1800 2200 50 260 440 670 1000 1300 1700 2200 2700 60 310 530 810 1200 1600 2100 2600 3200 70 360 620 940 1400 1900 2400 3100 3800 80 410 710 1100 1600 2200 2800 3500 4300 90 460 800 1200 1800 2400 3100 3900 4900 100 510 890 1300 2000 2700 3500 4400 5400

300 42 85 170 250 340 420 510 590 680 760 850 1300 1700 2500 3400 4200 5100 5900 6800 7600 8500

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Form H&S/032 Company Gas Procedures 2.5.1 Pipe Volume Of Typical Section

Ref: PMP/S/A44

2.5.2 Cast Iron – Class C BS 1211 IMPORTANT: For convenience, the values are given in metres cubed multiplied by one thousand. Divide by one thousand to obtain the correct volume in metres cubed. LENGTH (m) 0.5 1 2 3 4 5 6 7 8 9 10 15 20 30 40 50 60 70 80 90 100 SIZE (mm) 15 22 0.07 0.16 0.14 0.32 0.29 0.64 0.43 0.96 0.58 1.3 0.72 1.6 0.86 1.9 1.01 2.23 1.15 2.57 1.3 2.9 1.4 3.2 2.17 4.8 2.9 6.4 4.3 9.6 5.8 13 7.2 16 8.6 19 10.1 22.3 11.5 25.7 13 29 14 32

28 0.27 0.54 1.1 1.6 2.2 2.7 3.23 3.77 4.3 4.87 5.4 8.1 11 16 22 27 32.3 37.7 43 48.7 54

35 0.42 0.84 1.7 2.53 3.33 4.2 5.03 5.87 6.73 7.57 8.4 13 17 25.3 33.3 42 50.3 58.7 67.3 75.7 84

42 0.62 1.2 2.5 3.7 4.95 6.2 7.43 8.67 9.83 11.5 12.5 18.5 25 37 49.5 62 74.3 86.7 98.3 115 125

54 1.03 2.07 4.13 6.2 8.3 10.27 12.67 14.67 16.67 18.67 20.7 30.67 41.3 62 83 102.7 126.7 146.7 166.7 186.7 207

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Form H&S/032 Company Gas Procedures 2.6.1 Pipe Volume Of Typical Section

Ref: PMP/S/A44

2.6.2 Seamless and welded carbon IMPORTANT: For convenience, the steel pipes BS 3601 & BS 3602 values are given in metres cubed multiplied by one thousand. Divide one thousand to obtain the correct volume in metres cubed
LENGTH (m) SIZE (mm) (in) (nominal) 15½ 20¾ 251 321 ¼

401½

502

652½

803

1004

1506

2008

0.5 1 2 3 4 5 6 7 8 9 10 15 20 30 40 50 60 70 80 90 100

0.102 0.204 0.407 0.61 0.81 1.0 1.0 1.4 1.6 1.8 2.0 3.1 4.07 6.1 8.1 10 12 14 16 18 20

0.17 0.34 0.68 1.0 1.4 1.7 2.1 2.4 2.7 3.1 3.4 5.2 6.8 10 14 17 21 24 27 31 34

0.32 0.64 1.3 1.9 2.6 3.2 3.8 4.5 5.1 5.7 6.4 9.6 13 19 26 32 38 45 51 57 64

0.5 1.0 2.0 3.1 4.1 5.1 6.1 7.1 8.1 9.2 10 15 20 31 41 51 61 71 81 92 100

0.69 1.4 2.8 4.1 5.5 6.9 8.3 9.7 11 12 14 21 28 41 55 69 83 97 110 124 140

1.0 2.1 4.2 6.2 8.3 11 13 15 17 19 21 31 42 62 83 110 130 150 170 190 210

1.8 3.6 7.1 11 15 18 22 25 29 32 36 53 71 110 150 180 220 250 290 320 360

2.6 5.1 10 15 21 26 31 36 41 46 51 76 100 150 210 260 310 360 410 460 510

4.3 8.6 18 26 35 43 52 60 69 77 86 128 180 260 350 430 520 600 690 770 860

9.8 20 39 59 78 98 120 140 160 180 200 300 390 590 780 980 1200 1400 1600 1800 2000

18 35 69 110 140 180 210 240 280 310 350 520 690 1100 1400 1800 2100 2400 2800 3100 3500

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