Standard Operating Procedure Doc. No. SOP-06A

Rev 6

Color Coding Date 23/Nov/2011

Page 1 of 3

Prepared by Approved by Karthik Krishna A C Raja

Form No: GP-010-Rev1

R6

1.0 Scope:

This procedure describes the color coding system which shall be followed for valve components at supplier end and L&T Valves.

2.0 General

Following colour coding system shall be used for identification of inspection status of components.

S. No Colour Code Identification for

1 Green Accepted material

2 Red Rejected Material (Raw & Machining)

3 Yellow Rework or Hold for Decision The colour coding shall be either in the form of paint, tag and bin colour.

3.0 Colour coding based on material grades: 3.1 Components shall be identified using below colour code based on material specification.

3.2 These colour coding is not mandatory, when the components are taken for machining or

other processing from stores.

S. No Material Colour code Components

1

ASTM A216 Gr. WCB/WCC

No specific colour coding

For any component

ASTM A105

ASTM A106

ASTM A194 Gr. 2H

ASTM A516 Gr. 70

ASTM A193 Gr. B7

2

ASTM A217 Gr. WC6

Blue

Body, Bonnet, Stem, Ball, Connector, Bonnet

bush, Gland, Bypass pipe

ASTM A182 Gr. F11

ASTM A335 Gr. P11

3

ASTM A217 Gr. WC9

Black

Body, Bonnet, Stem, Ball, Connector, Bonnet

bush, Gland, Bypass pipe

ASTM A182 Gr. F22

ASTM A335 Gr. P22

J Viswanath 08/06/2013

Standard Operating Procedure Doc. No. SOP-06A

Rev 6

Color Coding Date 23/Nov/2011

Page 2 of 3

Prepared by Approved by Karthik Krishna A C Raja

Form No: GP-010-Rev1

R6

4

ASTM A217 Gr. C12A

White

Body, Bonnet, Stem,

Ball, Connector, Bonnet bush, Gland, Bypass

pipe

ASTM A182 Gr. F91

ASTM A335 Gr. P91

5

ASTM A182 Gr. F316

Green + Yellow Disc, Stem, Gasket,

Bonnet Bush, Stem Nut, Bar, Ball

ASTM A351 Gr. CF8M

ASTM A276 Type 316

SS316 (for Gasket)

6 ASTM A182 Gr. F304

Black + Orange

Disc, Stem, Gasket, Bonnet Bush, Stem Nut,

Bar, Ball ASTM A351 Gr. CF8

7

ASTM A182 Gr. F316L

Green + Black Disc, Stem, Bonnet Bush, Gasket, Gland ASTM A351 Gr. CF3M

ASTM A276 Type 316L

SS316L (for Gasket)

8 ASTM A352 Gr. LCB

White + Green Castings, Body Ring

ASTM A350 Gr. LF2

9 ASTM A193 Gr. B16

Pink Stud ASTM A194 Gr. 7

10

ASTM A217 Gr. CA15

Grey

Bar, Bonnet Bush Nut

ASTM A276 Type 410

ASTM A479 Gr. 410

ASTM A182 Gr. F6a

11 ASTM A193 Gr.B7M

Green Stud and Nut ASTM A194 Gr.2HM

12 Stellited Components

Orange (in addition to base colour code)

Disc, Seat Ring, Bonnet Bush

13 Components for NACE Application

Pink (in addition to base colour code) For any Component

J Viswanath 08/06/2013

Standard Operating Procedure Doc. No. SOP-06A

Rev 6

Color Coding Date 23/Nov/2011

Page 3 of 3

Prepared by Approved by Karthik Krishna A C Raja

Form No: GP-010-Rev1

3.3 Additionally, following identifications shall also be ensured: 3.2.1 IBR Castings : IBR OK letters in White Paint 3.2.2 PT Examination on BW : DP OK hard punch 3.2.3 Sale order : SSSS/LLLL (Four digits of sale order & item on body

castings), where applicable 4.0 Method of identification:

4.1 In case the components listed above are bought-out, Purchase shall ensure that it is colour coded and brought. Stores and QC to ensure this.

4.2 In case of in-house processing, Production shall be responsible for colour identification. Rejection or Rework shall be identified by QC.

4.3 The colour coding shall be done on the components by Paint.

4.4 The components also need to be punched for material identification.

4.5 In case of special orders Customer Name shall be painted on castings for Identification. (e.g., ESSAR letters for Castings for Essar Oil Order).

J Viswanath 08/06/2013