< Security Level 2 >
Sheet 1 of 19
CONSTRUCTION SPECIFICATION
MARKING OF PIPING MATERIALS
FOR
NITROGEN PACKAGE
FOR
HINDUSTAN PETROLEUM CORPORATION LTD.
VISAKH REFINERY
DHT PROJECT
TEIL JOB NO. : 6261
DOCUMENT NO.: H-106
A
16.04.09
For Bid Enquiry
Rev.
no.
Issue Date
Description
UCM
PRK
Prepared by Checked by Approved by
TOYO ENGINEERING INDIA LIMITED
MUMBAI
SSV
INDIA
< Security Level 2 >
Sheet 2 of 19
Revision History
Rev.
Date
A
16.04.2009
Description
For Bid Enquiry
< Security Level 2 >
MARKING OF PIPING MATERIALS
TOYO ENGINEERING INDIA LTD.
HPCL, Visakh
ISSUED : 29.12.2008
DOC.No. H - 106
JOB NO. : 6261
DHT PROJECT
Sheet 3 of 19
CONTENTS
PAGE
1.
GENERAL
1.1 Intent
1.2 Scope
1.3 Specific Job Requirements
2.
MARKING GENERAL
2.1 Marking of Items
2.2 Material Discrimination Color
3.
7
8
VALVES
5.1 Marking of Valves
5.2 Marking Items and Marking Location
6.
5
5
6
FITTINGS
4.1 Marking of Pipe Fittings
4.2 Material Discrimination Color
5.
4
4
PIPES
3.1 Marking of Pipes
3.2 Marking Location
3.3 Material Discrimination Color
4.
4
4
4
10
11
FLANGES (Including Spacers/Spades, 8-Fig Flanges and Stub
Ends)
6.1 Marking of Flanges, Spacers/Spades, 8-Fig Flanges and Stub Ends 13
6.2 Marking Location
14
6.3 Material Discrimination Color
14
7.
BOLTS AND NUTS
7.1 Marking of Bolts and Nuts
7.2 Material Discrimination Color
8.
15
15
GASKETS
8.1 Marking of Gaskets
8.2 Marking Location
16
16
Table 1
Table 2
18
18
Table 3
Discrimination Colors for Piping Materials
Identification Marks and Discrimination Colors
for Casting and Forging Materials
Identification Marks and Discrimination Colors
for Materials of Bolts and Nuts
19
< Security Level 2 >
MARKING OF PIPING MATERIALS
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DOC.No. H - 106
1.
GENERAL
1.1
Intent
JOB NO. : 6261
DHT PROJECT
Sheet 4 of 19
This specification covers the procedure of markings for the identification of
piping materials which shall be included in the Nitrogen Package for Diesel
Hydrotreater Project (DHT) at M/s. Hindustan Petroleum Corporation Limited
(HPCL) Visakh Andhra Pradesh, India has appointed Toyo Engineering India
Ltd as “Project Management Consultant “(PMC).
1.2
Scope
This specification shall be applied to piping materials such as pipes, fittings,
valves, flanges, gaskets, bolts and nuts.
1.3
Specific Job Requirements
Specific Job Requirements shall be attached to this specification, if applicable.
2.
MARKING GENERAL
2.1
Marking of Items
2.1.1
Marking shall generally be accomplished by either one or a combination of
casting-out, forging-out, punching, stenciling, tagging, labeling, and taping.
2.1.2
Punching depth shall not exceed 1 mm.
2.1.3
Stenciling color shall be black, however for piping components whose surfaces
are black or dark, it shall be white.
2.1.4
Paint or ink for marking shall not contain any harmful metal or metal salts which
can cause corrosive attack either ordinarily or in service.
2.1.5
Special items/smaller items shall have attached corrosion resistant tag
providing salient features.
2.1.6
Color coding on broad material basis.
2.2
Material Discrimination Color
2.2.1
Basic colors to be used for material discrimination shall be as indicated below:
Color Name
Munsell Notation
Color Name
Munsell Notation
White
N 9.5
Yellow
2.5Y 8/12
Black`
N 1.0
Light green
7.5GY 7/4.5
Silver
-
Green
5G 5.5/6
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Sheet 5 of 19
Pink
5R 7/5
Sky blue
10B 6/7
Red
5R 4/13
Blue
2.5PB 5/6
Orange
2.5YR 6/13
Purple
2.5RP 4.5/12
Brown
7.5YR 5/6
2.2.2
Brands of paint used for material discrimination shall be selected by
manufacturer of piping materials. For stainless steels, paints containing
materials which adversely affect the quality of the steel shall not be used.
2.2.3
Discrimination color shall be painted in one line, and in case of two
discrimination colors, in parallel two lines.
3.
PIPES
3.1
Marking of Pipes
The following items or the like shall be indicated on all pipes.
Marking shall normally be accomplished by stenciling and/or punching, in the
following order.
(1)
Manufacturer's name or trade mark
(2)
Codes or standards (ASTM, API, IS ... etc.)
(3)
Material specification
(4)
Manufacturing method
(5)
Date of manufacture (1)
(6)
Dimension (2)
(7)
Manufacturing No. or mark (charge No. or lot No.)
(8)
Heat No.
(9)
Test Pressure
Notes : (1) For lined pipes, the date of lining work shall also be indicated.
(2) Dimensions shall be indicated in "Nominal size x Schedule No. x
Length". When nominal sizes and schedules No. cannot be applied,
actual outside or inside diameter and wall thickness in millimeter may
be indicated. Nominal Pipe Size (NPS) shall be in accordance with
inch system.
3.2
Marking Location
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Sheet 6 of 19
3.2.1
For pipes of Nominal Pipe Size (NPS) 1 1/2 and under, a stiff tag on which all
items in Par. 3.1 are indicated, shall be attached to each bundle of pipes.
However, material specification shall be marked on the outer surface of
individual pipe.
3.2.2
For pipes of NPS 2 and over, all items in Par. 3.1 shall be marked on the outer
surface of each pipe.
3.2.3
For pipes of NPS 16 and over, all items in Par. 3.1 shall be marked on the
inner surface of one end of each pipe. However, for seamless pipes, marking
shall be made on the outer surface.
3.2.4
For coated pipes of NPS 3 and under, all items indicated in Par. 3.1 shall be
marked on the outer surface of each pipe.
3.2.5
For coated pipes of NPS 4 and over, all items in Par. 3.1 shall be marked on
the inner surface of one end of each pipe. Any item which cannot be marked
on the inner surface, shall be indicated on a tag, which shall be attached to the
pipe.
3.3
Material Discrimination Color
3.3.1
Discrimination colors indicated in Table 1 shall be painted on the outer surface
of all pipes, except for coated pipes and galvanized pipes.
3.3.2
Discrimination color shall be painted all through the longitudinal length of pipe.
3.3.3
Painting shall generally be as shown in Fig. 1.2.
For NPS 1.1/2 and smaller, pipes may be painted as shown in Fig.1.1 at the
mill, and such pipes shall be painted through the longitudinal length after being
receipt at site as specified in Fig.1.2.
(a) One color
Discrimination color
NPS 1 and under
NPS 1 1/2
2 mm or over
3 mm or over
(b) Two colors
3 mm
Discrimination color
Same as in case of
one color.
Fig.1.1 Painting of Discrimination Color (NPS 11/2 and smaller only)
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Sheet 7 of 19
(a) One color
Discrimination color
NPS 1 and under
NPS 1 1/4 - 2 1/2
NPS 3 and over
15 mm or over
15 mm or over
25 mm or over
(b) Two colors
Discrimination color
NPS 1 and under
NPS 1 1/4 - 2 1/2
NPS 3 and over
15 mm or over
15 mm or over
25 mm or over
Same as in case of one color
Fig.1.2 Painting of Discrimination Color
4.
FITTINGS
4.1
Marking of Pipe Fittings
The following items shall be indicated on all fittings. Marking for pipe fittings
shall generally be accomplished by stenciling and/or punching, or labeling.
Butt (7) Socket (8)
Welding Welding
No. Items
1
Manufacturer's name or trade mark
2
Material Specification & Dimensional
Std. (1)
(5)
3
Nominal size (2)
(4)
4
Schedule No. (2)
5
Pressure Class
6
Manufacturing No. or mark (3)
(Charge No. or lot No.)
Screwed Type
(9) (Malleable
Iron Casting)
(6)
For fittings of the type other than those indicated above, marking shall be made
in the same manner as shown for the similar type among the three.
Notes :
(1)
Discrimination/Identification marks in Table 1 or Table 2 may
be used as material specification.
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Sheet 8 of 19
Austenitic stainless steel socket and fittings need carry only
grade identification symbol.
(2)
When nominal sizes and schedule No. cannot be applied,
actual outside or inside diameter, and wall thickness in
millimeter may be indicated. Nominal sizes shall conform to
inch system (NPS).
(3)
Manufacturing No. or Mark may be omitted for materials of
group 1A in Table 1, and of group 10 in Table 2.
(4)
In case of elbows, symbols indicating long radius or short
radius type shall be included.
(5)
ASTM specification A234, A403 and A420 shall use marking
symbols consisting of the prefix “WP” added to the ASTM
specified grade identification symbol.
(6)
Symbols indicating straight type or reducing type, shall be
included.
(7)
For small fittings on which all marking items cannot be fully
indicated, the following items, in whole or a part, may be
omitted in the following order.
(8)
(9)
(a)
Symbols indicating long radius or short radius type.
(b)
Nominal sizes
(c)
Schedule No.
For small fittings on which all marking items cannot be fully
indicated, the following items may be omitted in the following
order.
(a)
Symbols indicating straight type or reducing type.
(b)
Nominal sizes
(c)
Schedule No.
Where marking items cannot be fully indicated, marking for
each fitting may be omitted, but, in this case, a stiff tag on
which all items are indicated shall be attached to each package
of fittings.
4.2
Material Discrimination Color
4.2.1
Material Discrimination Colors in Table 1 and Table 2 shall be painted on the
outer surface of each fitting.
4.2.2
Discrimination color paint shall be accomplished as indicated in Fig. 2.
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Sheet 9 of 19
B
A
Dimension A
NPS 1 and under
NPS 1 1/4 - 2 1/2
NPS 3 and over
2 mm or over
3 mm or over
5 mm or over
Dimension B
NPS 1 and under
NPS 1 1/4 - 2 1/2
NPS 3 and over
2 mm or over
3 mm or over
4 mm or over
Fig. 2 Painting of Discrimination Color
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MARKING OF PIPING MATERIALS
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5.
VALVES
5.1
Marking of Valves
JOB NO. : 6261
DHT PROJECT
Sheet 10 of 19
5.1.1
All items indicated in Par. 5.2 shall be marked on all valves.
5.1.2
Marking of valves shall be made on valve body, hand wheel, name plate and
bolt & nut.
5.1.3
Marking on valve body shall be made on body or bonnet by casting-out,
forging-out or punching.
5.1.4
Marking on hand wheel shall be made by casting-out, forging-out or punching.
When marking items cannot be fully indicated on handwheels, marking may
be made adequately by alternative method.
5.1.5
Name plates which shall be generally attached on the upper side of
handwheels, shall have marking by etching, press or punching.
5.1.6
Marking on bolt & nut shall be made on the end face (bolt), or on the upper or
side face (nut) by punching.
5.1.7
For small or special valves on which marking items can not be fully indicated
on the body, markings may be omitted with Purchaser’s approval in the
following order:
a)
Nominal size
b)
Thread Identification
c)
Melt Identification
d)
Rating Identification
e)
Material Identification
f)
Valve Trim Identification
Vendor shall inform the item to purchaser in case vendor wishes to omit
markings because of small space.
5.1.8
The identification plate of valves (with stem extension) which will be insulated
at site, shall be, if possible, fixed in a place located out of the insulated
surfaces.
This plate in stainless steel shall be fixed securely on the valve. The
fasteners used for fixing shall resist to marine corrosion.
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5.1.9
JOB NO. : 6261
DHT PROJECT
Sheet 11 of 19
For cryogenic valves : in order to ensure that the valve is mounted to the
correct side of the line pipe, the word “vent” must be stamped, at the same
side of the cavity relief device, on the corresponding flange or BW end.
5.1.10 Valve no. shall be specified on the valve name plate.
5.1.11 Valve name plate shall be attached on the valve body or on the top of
handwheel. Attaching the name plate to handwheel by wire or clip is not
acceptable.
5.2
Marking Items and Marking Location
Body (Forged) Hand- (1)
Bonnet
By
By
By
By
wheel Name Bolt/
Others
Cast- Punchi Forg- Punchi
Plate Nut
ing-out ng
ing-out ng
Body (Cast)
No. Marking Items
1
Manufacturer's O
name or trade
mark
2
Class
3
4
(6)
O
O
O
Nominal size
O
O
Material
specification
(2)
valve body
O
O
flow O
O
of
(3)
O
(3)
O
(3)
O
(3)
O
5
Arrow of
(7)
direction
6
Melt No.
7
Material of trim
O
8
Manufacturing
No.
O
9
Date
manufacture
O
10 Letters
Symbols
Arrowhead
indicate
“OPEN”
(8)
“SHUT”
O(11)
O
(3)
O(11)
(4)
(4)
of
or
and
to
and
O
O
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MARKING OF PIPING MATERIALS
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DHT PROJECT
Sheet 12 of 19
of
11 Material
bonnet bolt and
nut
12 Certificate
inspection
13 Valve No. (9)
(10)
O
of
O
(5)
O
Notes :
(1)
Marking on name plate is not necessary when the valve body and
bonnet are made of gray cast iron, cast bronze or brass, black heart
malleable cast iron, spheroidal graphite cast iron or carbon steel
(excluding those for low temperature service). Marking of trim
material shall be made on name plates, except for the following
cases;
(a)
When valve body is of gray cast iron, black heart malleable, or
spheroidal graphite cast iron and trim is of bronze, brass or
13Cr steel.
(b)
When valve body is of carbon steel (excluding those for low
temperature service) and trim is of 13Cr Steel.
(c)
Plug valves whose body and plug are of the same material.
(2)
When the body material differs from the bonnet material, marking
shall be individually made on each of them. If the body material is the
same as bonnet, marking may be made on either one of them. In this
case, material identification mark shall be in accordance with Table 2.
(3)
Except for Item 1 wherein approval is required, punching may be
substituted for forging-out if forging-out is impossible.
(4)
Manufacturing number indicating the product history shall be marked
on all cast and forged steel valves. These may be omitted, however,
for carbon steel valves (excluding those for low temperature service,
cast steel valves of class 600 or above, or forged steel valves of class
900 or above). Date of manufacture may be marked instead of the
manufacturing number.
(5)
Each valve shall be accompanied by a test label or a quality
guarantee letter indicating that the valve has been carefully made
under the control of the manufacturer and that its quality is
guaranteed. Instead of this, punch marking may be used for this
purpose.
(6)
Class (Rating) shall generally be indicated by using the following
abbreviations.
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Class (Rating)
Class 150
Class 300
Class 600
Class 800
Class 900
Class 1500
Sheet 13 of 19
Abbreviations
150
300
600
800
900
1500
(7)
Arrow of flow direction shall be indicated, only when required by the
valve structure.
(8)
This item may be marked on valve body for butterfly valve.
(9)
Valve number shall be as indicated in the data sheet. Marking shall be
made as large as possible, on the outer surface of valve body.
(10)
This is not applicable for valve without bonnet such as check valve.
(11)
Melt No. by punching is acceptable if it is not possible by casting out.
Remark :
Items desired by the manufacturer may be marked at the
manufacture's discretion, such as symbols for special specification,
catalogue number, type number and patent number.
6.
FLANGES (Including Spacers/Blanks, 8-Fig Flanges, and Stub Ends)
6.1
Marking of Flanges , Spacers/Blanks, 8-Fig Flanges and Stub Ends,
The following items shall be punched on the outer surface (rim) of flanges and
stub ends. Items which cannot be indicated on the outer surface of stub end,
may be marked on the outer surface of pipe by stenciling or painting.
(1)
(1)
Nominal size
(2)
Schedule No. (1) (when required)
(3)
Rating (2)
(4)
Material specification and Applicable Std. (3)
(5)
Manufacturer's name or trade mark
(6)
Ring Groove No.(4)
(7)
Temperature
(8)
Charge No. and lot No.
Notes :
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6.2
JOB NO. : 6261
DHT PROJECT
Sheet 14 of 19
(1)
When nominal sizes and schedule no. cannot be applied, actual
outside or inside diameter and wall thickness of pipes to which
flanges will be provided, may be indicated in millimeter.
(2)
Refer to Note (6) in Par. 5.2.
(3)
Material specifications may be in accordance with Table 1 and Table
2.
(4)
Ring groove no. shall be applied to ring joint flange, and shall be
marked with the letter “R” at the edge (periphery) of ring joint flange.
Marking Location
Marking location shall generally be as indicated in Fig. 3.
6.3
Material Discrimination Color
6.3.1
Material discrimination colors in Table 1 and Table 2 shall be painted on the
outer surface of flanges, spacers/blanks, 8-Fig Flanges, and stub ends.
6.3.2
Discrimination colors shall be painted on the outer surface of flanges and stub
ends, but not on the punched portion.
Painting shall generally be
accomplished as indicated in Fig. 3.
Flange
Discrimination color
Punching location
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Sheet 15 of 19
Stub End
Discrimination color
Marking location for
items which cannot be
indicated on the
punching location
Punching location
Remark :
Dimensions for painting of discrimination color shall be in accordance
with Par. 3.3.3.
Fig. 3 Punching and Painting Locations of Flanges, Spacers/Blanks, 8-Fig. Flanges,
and Stub Ends
7.
BOLTS AND NUTS
7.1
Marking of Bolts and Nuts
Material identification marks shown in Table 3 shall be punched on bolts and
nuts separately. Marking location shall be as indicated in Fig. 4.
7.2
Material Discrimination Color
Material discrimination colors shown in Table 3 which indicate the
combinations of bolt and nut materials, shall be painted on bolts and nuts.
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Sheet 16 of 19
Machine Bolt
Identification mark
Discrimination color
Discrimination color
Stub Bolt
Identification mark
Discrimination color
Discrimination color
Fig. 4 Marking Location of Bolts and Nuts
8.
GASKETS
8.1
Marking of Gaskets
The following items shall be indicated on gaskets. Marking shall generally be
made by one or combination of punching, stenciling, tags or tapes.
(1)
Manufacturer's name or trade mark
(2)
Product's name (Manufacturing No. and material)
(3)
TS No.
(4)
Dimension (Nominal size and ring No.)
(5)
Code (rating)*
Note : * Ratings shall be as indicated in Note (6) in Par. 5.2.
8.2 Marking Location
8.2.1 For asbestos sheet gaskets and non-asbestos gaskets, a stiff tag on which all
items specified in Par.8.1 are indicated shall be attached to each package.
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Sheet 17 of 19
8.2.2 For spiral wound gaskets of basic type and those with inner ring, tags or tapes
on which all items specified in Par.8.1 are indicated shall be attached.
8.2.3 For spiral wound gaskets with outer guide ring, and those with outer guide ring
and inner ring, all items specified in Par.8.1 shall be indicated on surface of outer
guide ring by punching or stenciling.
8.2.4 For ring joint gaskets, all items specified in Par.8.1 shall be marked on the
circumference of ring by punching. A tag on which all items specified in Par.8.1
are indicated shall also be attached.
8.2.5 For other types of gaskets, all items specified in Par.8.1 shall be adequately
indicated with the above methods.
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Sheet 18 of 19
Table 1 Identification Marks and Discrimination Colors for Piping Materials
Grou Material
p
Discrimination
1A
-
-
-
A53 Gr.B – Galv.
-
API5LGr.B SAW A283Gr.C
Blue
API5LGr.B ERW
Pink
API5LGr.B SMLS
Orange - Silver
A312Gr.TP304
SMLS
Orange
A312Gr.TP304
WELD
Carbon
Steel
1C
4
18Cr-8Ni
Equivalent ASTM Material(1)
REMARK
S
Color
A358
CL.1
A234Gr.WP
B
A240
304
TYPE A403Gr.WP
304
TP304
Notes: (1) To be equivalent does not mean to be identical, but to be similar.
Table 2 Identification Marks and Discrimination Colors for Forging and Casting
Materials
Grou Material
p
Forging
ASTM
Material
10
Bronze
1
Carbon
Steel
4A
18Cr-12Ni- A182
Mo
Gr.F316
Casting
Identifica ASTM
tion Mark Material
Identific Discriminati Remark
a-tion on Color
s
Mark
BRZ
A105
Yellow
A105
A216Gr.W WCB
CB
-
F316
A351Gr.CF CF8M
8M
Brown
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Sheet 19 of 19
18Cr-8Ni
A182Gr.F30 F304
4
A351Gr.CF CF8
8
Orange
18Cr-8NiMo L
A182Gr.F31 F316L
6L
A351Gr.CF CF3M
3M
White
Table 3 - Identification Marks and Discrimination Colors for Materials of
Bolts and Nuts
Material and Combination
Identification Mark
Bolt
Discriminatio
n Color
Bolt
Nut
Nut
A193 Gr.B7
A194
Gr.2H
B7
2H
-
A193 Gr.B7 – Cadmium
plated
A194
Gr.2H
B7
2H
-
A320 Gr.B8M(CL.2)
A194
Gr.8A
B8M
8A
Orange