JOB PIPING MATERIAL JOB SPECIFICATION No.

SPECIFICATION 6782-6-44-0005-A1 Rev.S

Page 1 of 13
GENERAL NOTES

ANNEXURE - I (TO PMS)

JOB
PIPING MATERIAL SPECIFICATION
GENERAL NOTES

Client : MRPL

Project : PH-III REF PROJECT

Location : MANGALORE

Job No. : 6782

S 06/07/2009 PMS ISSUED FOR WWTP-III SD JR YCP

Reviewed Approved
Rev. No Date Purpose Prepared by
by by

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 JOB PIPING MATERIAL JOB SPECIFICATION No.
SPECIFICATION 6782-6-44-0005-A1 Rev.S
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GENERAL NOTES

Abbreviations:

PMS : Piping Material Specification

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GENERAL NOTES

CONTENTS

Sl. No. Description Page No.

1.0 SCOPE 4
2.0 REFERRED CODES & STANDARDS 4
3.0 MATERIAL SPECIFICATIONS 4
4.0 CLASS DESIGNATION CODE 4
5.0 PIPES 5
6.0 FLANGES 5
7.0 FITTINGS 6
8.0 BENDS, MITRES & REDUCERS FABRICATED FROM PIPE 6
9.0 GASKETS 6
10.0 BOLTING 6
11.0 THREADS 7
12.0 VALVES 7
13.0 NDT SPECIFICATIONS 8
14.0 WELDING SPECIFICATIONS 8
15.0 CAUSTIC SODA SERVICE GRAPH 8
TABLE FOR MIDDLE NUMBER 9
TABLE FOR PRESSURE-TEMPERATURE RATING FOR BALL, PLUG 12
AND BUTTERFLY VALVES

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GENERAL NOTES

1.0 SCOPE

1.1 This specification (PMS) covers the various piping classes for Process and utility Piping.

1.2 Deviations from this specification may be necessary to conform to specific job requirements.

2.0 REFERRED CODES & STANDARDS

2.1 All Piping shall be designed in accordance with the Process Piping Code, ASME B31.3. A
particular edition (indicated in Design Basis), once selected shall be followed throughout the job.

2.2 Editions and addenda (if any) of referred Codes and Standards shall be as per the Job Engineering
Design Basis (Piping).

2.3 For the sake of brevity, the initials of the society to which the codes are referred to may be
omitted in the specification. For example; B16.5 is a code referring to ASME; A106 is a standard
referring to ASTM.

3.0 MATERIAL SPECIFICATIONS

3.1 Individual piping Class has been generally designed to cover a set of services operating within
pressure-temp. combination as per ASME B16.5 / B16.34 or part of it.

3.2 The PMS shall be strictly adhered to in the design, requisitioning, purchasing, fabrication and
testing of the piping system. However, deviations of material may occur due to design conditions
and/or availability. All substitutions must be duly approved.

3.3 Unless mentioned otherwise, pipe thicknesses in the specs are for above ground piping.

4.0 CLASS DESIGNATION CODE

The class designation shall consist of not more than three components made up of a letter,
number & letter; e.g.B1A.

4.1 The first letter indicates pressure rating.

A 150 Class D 600 Class G 2500 Class

B 300 Class E 900 Class J 125/150 Class
C 400 Class F 1500 Class K UNCLASSIFIED

4.2 The middle number indicates difference in the specifications within the same rating and material
as enlisted in the Table attached.

4.3 The third letter indicates type of material.

A Carbon
B Carbon Moly.
C 1.0 % Cr., 0.5 % Moly.
D 1.25 % Cr., 0.5 % Moly.
E 2.25 % Cr., 1.0 % Moly.
F 5.0 % Cr., 0.5 % Moly.
G 9.0 % Cr., 1.0 % Moly.
H 3.5 % Ni.
I
J Nickel / Titanum

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GENERAL NOTES

K Stainless steel type 304, 304H, 304L.

L Aluminium
M Stabilised stainless steel type 316, 316H, 321, 347.
N 316L
P Monel / Alloy 20
Q Hastalloy / Inconel / Incoloy
R Lead
S PVC & FRP, PP / FRP, PVDF / FRP
T Cast Iron / Silicon Iron
U
V Duplex Stainless Steel
W Cupro-Nickel
Y Lined steel (Rubber Lined, Teflon Lined etc).
Z HDPE / PDVF / Teflon / PVC

5.0 PIPES

5.1 Pipe dimension shall be in accordance with ASME B36.10, IS:1239 & IS:3589 for wrought steel
and wrought iron pipe; to B36.10 / B36.19 for stainless steel pipe and respective ASTM Standard
for non-ferrous and non- metallic pipes.

5.2 Pipe made by acid-bessemer process shall not be acceptable, steel pipe shall be made by open
hearth, electric furnace or basic Oxygen process.

5.3 All pipe threads shall conform to ASME B1.20.1 except where otherwise noted.

5.4 Pipe thicknesses not covered in different classes of this specification shall be calculated to meet
specific job requirement based on actual max. design condition to economise on thickness.
However, in such cases the thickness shall be calculated at not less than 80% of class rating
unless defined otherwise in the Job Engineering Design Basis (Piping).

5.5 Maximum of 10% of Corrosion Allowance may be adjusted to optimize on pipe schedule.
However, if CA is suffixed by 'minimum', this downward adjustment shall not be used.

5.6 Non-standard pipe sizes 1¼", 2½", 3½", 5" and 22" shall not be treated as a part of this
specification unless these sizes are separately called out.

5.7 All welded pipes (including IS 3589) shall be of longitudinally welded type. Spirally welded
pipes are not acceptable.

6.0 FLANGES

6.1 Flanges shall be in accordance with the following codes, except where otherwise noted:

Upto 24" (150# -1500#) ASME B16.5

Upto 12" , 2500# ASME B16.5
Above 24" ASME B16.47 SERIES 'B' / AWWA / EIL' STD.

Flanges to ASME B16.47 SERIES 'A' or any other standard (e.g. DIN, GOST, JIS etc.) may be
specified to mate with equipment or valve flanges with the corresponding bolting.

6.2 Finish of steel flange faces shall be as follows:

Stock Finish : 1000 µin AARH max.

Serrated Finish / 125 AARH / : Serrations with 125-250µin AARH

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GENERAL NOTES

Smooth finish
63 AARH : 32 TO 63 µin AARH

6.3 Brinnel hardness for RTJ groove shall be atleast 20 BHN more than that of corresponding gasket
as specified.

6.4 Fig.8 Fl and SPCR & BLN shall be as per B16.48 upto 24" (150-1500#) & upto 12" for 2500#.
For other sizes, refer EIL Std 7-44-0162.

6.5 Ring joint flanges shall have a flat bottom groove with the intersection between the bottom and
the sides of the groove machined to a smooth 3.0 mm minimum radius.

7.0 FITTINGS

7.1 Forged steel SW and threaded fittings shall be in accordance with ASME B16.11, unless
otherwise specified. For items not covered under B16.11, reference may be made to BS 3799 or
appropriate MSS-SP-Std.

7.2 BW Fittings shall be in accordance with ASME B16.9, unless otherwise specified.

7.3 Dimensions of steel BW fittings for sizes not covered in ASME B16.9 shall conform to MSS-SP-
48.

7.4 Usage of unions shall be restricted to utilities only.

8.0 BENDS, MITRES AND REDUCERS FABRICATED FROM PIPE

8.1 Mitres and Reducers fabricated from Pipe may be used if specified in particular Piping Class. 90
degree mitre shall be minimum 4-piece construction upto 24" and minimum 5-piece construction
for 26" & above. 45 degree mitre shall be minimum 3-piece construction. Mitres require higher
thickness than corresponding Pipe / Elbow to hold the same pressure (Refer ASME B31.3).

9.0 GASKETS

9.1 Non-metallic gaskets shall conform to B16.21 (corresponding to B16.5) upto 24", and B16.21
(corresponding to B16.47B) beyond 24", unless otherwise specified.

9.2 Spiral wound gaskets (SP.WND or SPWD) and Ring Joint gaskets shall conform to B16.20.

10.0 BOLTING

10.1 All bolts shall conform to B18.2.1, nuts to be B18.2.2. Reference shall also be made to B16.5 for
studs.

10.2 Threads shall be to coarse Thread Series, B1.1, having Class 2A allowances for bolts and studs,
and Class 2B tolerance for nuts.

10.3 Nuts for Bolts and Studs shall be the American Standard Hexagon Heavy Series.

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GENERAL NOTES

11.0 THREADS

11.1 Threads for threaded Pipes, Fittings, Flanges and Valves shall be in accordance with B1.20.1
taper threads, unless otherwise specified.

11.2 Upto 204 deg.C, threaded joints shall be made with 1" width PTFE joining tape.

11.3 Above 204 deg.C, threaded joints shall be seal welded with a full strength fillet weld.

11.4 All threaded joints irrespective of pressure and temperature on lines carrying toxic fluid shall be
seal welded with a full strength fillet weld.

12.0 VALVES

12.1 Face to Face / End to End dimension of valves shall conform to B16.10 to the extent covered. For
valves not covered in B16.10, reference shall be made to BS 2080 and / or the manufacturer's
drawings.

12.2 Flange / weld ends of the valve shall be as per the corresponding Flange / Fitting ends of the
piping class, unless otherwise specified.

12.3 Pressure-temperature rating for flanged and butt welding end valves shall be as per ASME
B16.34 except for ball, plug & butterfly valves. For these valves refer TABLE FOR PRESSURE-
TEMP RATING FOR BALL, PLUG AND BUTTERFLY VALVES. Wall thickness of valve
body at different locations should not be less than as calculated as per B16.34.

12.4 Unless called-out specifically, valves shall be as per the following Standards:

Valve Size Rating Des. Std. Testing Std.

Gate 1/2"- 1-1/2" 800 / 1500 API-602 API-598
Globe / Check -do- 800 / 1500 BS-5352 BS-6755 Pt-I
Gate 2"-24" 150 / 300 / 600 API-600 API-598
Gate 26"-42" 150 / 300 BS-1414 BS-6755 Pt-I
Globe 2"-24" 150 / 300 / 600 BS-1873 -do-
Check 2"-24" -do- BS-1868 -do-
Gate/ 900 / 1500 / 2500 B-16.34 API 598 / BS-6755 Pt.I
Globe/Check (Refer 12.6 also)
Ball 1/2"-16" 150 / 300 / 600 BS-5351 / API 6D BS – 6755 Pt. I / API-
598
900 / 1500 API 6D API-598
Plug 1/2"-12" All API-599 / BS 5353 API-598 / BS 6755 Pt.I
Btrfly 3" & above All API-609 / BS 5155 / API-598 / BS-6755 Pt-I
AWWA C504 / AWWA
Diaphram ALL - BS-5156 BS-6755 Pt-I
Bronze RELEVANT IS STD. RELEVANT IS STD.
Cast Iron RELEVANT IS STD. RELEVANT IS STD.

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GENERAL NOTES

12.5 If not covered in 12.3, the valve shall be as per B16.34 / relevant MSS-SP Standard.

12.6 For details of the valves specifications, refer specifications 6782-6-44-0006. Features not covered
by 6-44-0006 and the relevant code shall be to the manufacturer's standard.

12.7 Unless otherwise specifically called for, upto 600# rating, 2" and larger size steel Gate, Globe &
Check valves in Hydrocarbon and utility service shall have bolted bonnets. Pressure-seal bonnets
or covers shall be used for Classes 900# and above to minimize bonnet leakage. However, valves
with Pr-seal Bonnet shall have wall thickness & stem diameter as per API-600, (if required).
Welded bonnets or screwed & seal welded bonnets are acceptable for sizes lower than 2" for
Classes 900# & above.

12.8 All valves of sizes 8” and above in Fire Water service shall have gear operation.

12.9 Asbestos free material (graphite/ graphite filler) shall be used for bonnet gaskets and stem
packing.

13.0 For Non-Destructive Testing (NDT) specification refer 6782-6-44-0016.

14.0 For Welding specifications, refer EIL specs. ‘Welding Specification for fabrication of piping (6-
77-0001)’ & ‘Welding charts for piping classes (6-77-00005)’.

15.0 For ‘Caustic Soda service graph' refer sheet 13 of 13.

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GENERAL NOTES

TABLE FOR MIDDLE NUMBER

Middle Carbon Steel AlloySteel SS304 / SS304H / SS 316 / 316H / 321 /

Number SS304L 321H / 347
A B, C, D, E, F, G, H K M
1 CA=1.5 CA=1.5 CA=NIL CA=NIL
(SS304) (SS316)
2 CA=1.5 CA=1.5 (IBR) CA=NIL CA=NIL
(IBR) (SS304-CRYO) (SS321-CRYO)
3 CA=1.5 CA=6.0 CA=NIL CA=1.5
(CAT'D) (CAT 'D' SS304) (SS321)
4 CA=1.5 CA=3.0 CA=1.5 CA=NIL
(LTCS) (SS304H) (SS321)
5 CA=1.5 CA=1.5 CA=3.0 CA=NIL
(Hydrogen) (Hydrogen)>230OC (SS304H) (SS316H) – H2
6 CA=4.5 CA=4.5 CA=1.5 CA=NIL
(SS304L) (SS316H)
7 CA=1.5 CA=NIL CA=NIL
(Vacuum) (SS304L-Vacuum) (SS347)
8 CA=1.5 CA=1.5 CA=1.5
(Conc.Sulphuric (SS304L-CRYO) (SS347)
Acid)
9 CA=3.0 CA=1.5 CA=1.5
(SS304) (SS316)
10 CA=1.5
(Offsites)
11 CA=3.0 CA=NIL
(Hardness controlled) (SS304L)
12 CA=NIL
(SS304-IBR)
13 CA=6.0

14

15 CA=3.0 CA=1.5 CA=1.5

(Liquid Sulphur) (SS304 H2 & CO2) (SS321H - H2)
16 CA=4.5 CA=4.5 (NACE) CA=1.5 CA=1.5
(NACE) (SS304L - NACE) (SS321 - NACE)
17 CA=3.0
(dry Chlorine)
18 CA=1.5 CA=NIL
(Oxygen) (SS304L-Oxygen)
19 CA=3.0
(Caustic / Amine,
Stress relieved)
20 CA=1.5
(Jacket for A15A)
32 CA=1.5 CA=NIL
(Tracing) (Tracing)
33 CA=1.5
(Fire Water)

NOTE: USE MIDDLE NUMBERS 21 TO 30 & 91 TO 99 FOR PROJECT DEPENDENT CLASSES.

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GENERAL NOTES

TABLE FOR MIDDLE NUMBER

Middle SS316L NICKEL ALLUMINIUM MONEL / ALLOY 20

Number /TITANUM
N J L P
1 CA=NIL CA=NIL (NICKEL) CA=NIL (MONEL)

2 CA=1.5 (CRYO) CA=1.5 (NICKEL) CA=1.5 (MONEL)

3 CA=NIL CA=NIL(ALLOY 20)

(TITANUM)
4 CA=1.5 (TITANUM) CA=1.5 (ALLOY 20)

5 CA=1.5 H2

6 CA=NIL (Vacuum)

10

11 CA=NIL

12

13

14

15

16 CA=1.5(NACE)

17

18 CA=NIL (MONEL)
OXYGEN
19

20

32

33

NOTE: USE MIDDLE NUMBERS 21 TO 30 & 91 TO 99 FOR PROJECT DEPENDENT CLASSES.

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GENERAL NOTES

TABLE FOR MIDDLE NUMBER

Middle Hastelloy / PVC / FRP LINED STEEL HDPE / PVDF /

Number Inconel / TEFLON
Incoloy S Y Z
Q
1 CA=NIL CA=NIL CA = NIL CA=NIL
(INCONEL (PVC) (TEF LINED) (HDPE) H2SO4
600)
2 CA=1.5
(PVC / FRP)
3 CA = NIL CA=NIL CA = NIL
(INCOLOY (FRP) (RUBBER LINED -
800) SOFT)
4 CA = 1.5 CA = NIL (RUBBER CA = NIL (HDPE) 30%
(INCOLOY LINED – SEMI HARD) HCL
800) 30% HCL
5 CA = 3.0 (<= 2”) & NIL CA = NIL (HDPE) 50%
(>= 3”) (CEMENT HF
LINED) CAT ‘D’ SEA
WATER
6 CA = 1.5
(INCOLOY
800H)
7

10

11

12

13

14
15
16
17
18
19
20
32
33 CA = 3.0 (<= 2”) & NIL
(>= 3”) (CEMENT
LINED) FIRE WATER
(SEA)

NOTE: USE MIDDLE NUMBERS 21 TO 30 & 91 TO 99 FOR PROJECT DEPENDENT CLASSES.

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GENERAL NOTES

TABLE FOR PRESSURE TEMPERATURE RATING FOR BALL, PLUG & BUTTERFLY
VALVES

PRESSURE IN kg / cm2
SIZE
PRESSURE RATING TEMPERATURE IN OC
ITEM RANGE (NB
(PIPING CLASS)
INCHES)
-29 TO
50 65 100 120 150 175 200 >200
38
150# (AS PER PMS) 19.99 19.58 19.2 17.93 17.2 16.12 15.22 7.03
BALL (Soft
300# (AS PER PMS) Upto 16” 52.00 51.02 49.8 41.85 37.3 27.4 19.15 7.03
Seated)
600# (AS PER PMS) 104.1 98.46 91.4 64.61 49.3 38.6 29.68 17.6

PLUG (Soft 150# (AS PER PMS) 19.33 19.3 18.63 17.6 16.89 15.82 14.93 14.06
Upto 8”
Seated) 300# (AS PER PMS) 52.02 50.35 48.26 43.4 40.0 37.4 35.23 28.1 DO
150# (AS PER PMS) 19.99 19.58 19.12 18.05 17.28 16.12 15.15 14.28 NOT
USE
PLUG
300# (AS PER PMS) Upto 12” 52.0 51.1 49.96 47.3 46.82 46.1 45.5 44.6
(Lubricated)
600# (AS PER PMS) 104.1 102.2 99.95 94.7 93.74 92.3 91.1 89.4
150# (J5A, A3A,
Butterfly (Soft A33A, A5Y, A33Y) 10.55 10.55 10.55 DON’T USE
Upto 48”
Seat)
150# 19.99 19.58 19.2 17.93 17.20 16.12 15.22 7.03

NOTE: IF THE CLASS PRESSURE / TEMPERATURE IS LOWER THAN THIS TABLE, CLASS
PRESSURE / TEMPERATURE TO BE FOLLOWED.

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GENERAL NOTES

14.6 26.4 36 44 5

CAUSTIC SODA SERVICE GRAPH

DEGREE BAUME aBE

14.6 26.4 36 44 50.2

280

260
AREA – ‘C’
APPLICATION OF NICKEL ALLOYS TO BE CONSIDERED IN THIS AREA
240

220 NICKEL ALLOY TRIM

FOR VALVES IN
AREAS ‘B’ AND ‘C’
AREA – ‘B’
200

CARBON STEEL
180
STESS RELIEVE WELDS & BENDS
TEMPERATURE OF

160

140

120

AREA – ‘A’
100
CARBON STEEL
80
NO STESS RELIEF NECESSARY
60

40

20

0
0 10 20 30 40 50
CONCENTRATED NaOH, % BY WEIGHT

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