1. SCOPE:
1. This instruction covers the identification marking of parts manufactured to Farrel Corporation drawings and purchase order requirements.
2. RESPONSIBILTY:
1. RESPONSIBILTY:
2. Farrel Purchasing department is responsible for adherence to this procedure by suppliers and subcontractors providing material to Farrel Corporation.
3. The following will be used to identify items:
1. Within Farrel:
1. Dwg. Number and revision level.
2. Work Order number
3. *Piece number
1. It is the responsibility of each employee to re-identify parts which are reporting into a higher level assembly or drawing level revision.
2. It is the responsibility of each employee to re-identify parts which have had the identification number removed by machining.
3. Manufacturing is responsible for the stamping of work order identification numbers on purchased components which require additional operations.
2. By Subcontracting/Suppliers:
1. Dwg Number and revision level
2. Purchase Order number
3. *Piece number
4. PARTS MANUFACTURED TO FARREL “WORD DRAWINGS” SHALL BE IDENTIFIED BY THE SUPPLIER WITH THE P.O. NUMBER AND WORD DRAWING NUMBER IN ACCORDANCE WITH P.O. OR DRAWING INSTRUCTIONS:
1. Examples of this type of part are electric motors, panels, gear drive units, hydraulic systems, etc.
2. As a minimum, identification shall be imprinted on a metal tag or plate and fastened securely in area adjacent to manufacturer’s standard data plate.
3. CVC items purchased from the manufacturer shall be identified in accordance with the manufacturer’s practice, i.e. Mfg. part number, Catalog number, Type number, Specification number, etc. In some instances, identification methods may not be utilized.
5. MARKING METHODS – FINISHED PARTS (OTHER THAN RAW MATERIAL):
1. Metal stamping with 3/8 inch high characters, is the preferred method.
1. Metal stamps with characters from 3/16 in. to ½ in. high may be used, depending on the part size and rigidity.
2. Etching and/or engraving shall be used on parts with thin sections, or where metal stamping may distort the part.
3. Tagging will be used as a last resort in situations where design consideration, lack of adequate stamping surfaces, flimsy design, size, etc., result in no other practical means of identification.
4. Split parts, such as rings made in two pieces, shall have identification marking applied to each half, and shall be match-marked at one joint.
6. WHEN AND WHERE TO MARK:
1. After the first metal removal operation on an exposed surface, the part must be permanently marked before the part leaves the machine.
1. Any identification number, certification number and testing data removed by subsequent machining operations, must be remarked.
2. The location of permanent identification marking will be noted on Engineering drawings.
1. Occasionally, drawings may be released for manufacturing without the marking location identified.
2. It is the responsibility of the manufacturing source to permanently mark the part in a non-critical location chosen in good judgement.
3. Without exception, identification numbers must not appear on surfaces to be plated with chrome, nickel, hard surfacing, etc., nor any surface with a finish better than 125 microinch.
3. Banbury® rotors are to be metal stamped with the foundry certification number at the first lathe turning operation on the end face of the water end bearing journal.
1. The foundry P.O. is to be stamped on the face of the drive end journal.
2. The foundry certification number is painted on the body section by the foundry (Ref. 7.2).
7. MARKING METHODS – RAW MATERIAL:
1. Raw material must be marked as specified by material supplier before shipment to Farrel Corporation or a Farrel designated subcontractor. In all cases, an appropriate weatherproof paint marker shall be used.
2. Castings:
1. Identify with weatherproof painted numbers.
2. Banbury® rotors shall include foundry certification (or serial number).
3. Forgings:
1. Raw forgings will be identified in weatherproof painted numbers.
2. Machined forgings will be identified by metal stamp numbers.
4. Weldments and Flame Cut Shapes:
1. Identify with weatherproof painted numbers.
5. All Other Raw Material:
1. Identify with weatherproof painted numbers.
8. PARTS REQUIRING TESTING:
1. Whenever part drawing specifies testing, the test information and date must be permanently marked on the part and certifications of acceptance must accompany the part.
2. Examples:
1.  
• Steam Test
• Mark: S.T. 150 PSI
• 09-25-92
2.  
• Hydrostatic Test (Water Test)
• Mark: W.T. 500 PSI
• 09-25-92
3.  
• Flow Test (Gallons per minute)
• Mark: Flow 60 GPM
• 40 PSI
• 09-25-92

NOTE: IN THIS EXAMPLE, 40 PSI IS THE APPROPRIATE PRESSURE DROP FOR THIS ITEM BEING TESTED.

*NOTE: USE FOR WORK ORDERS OR PURCHASE ORDERS CALLING FOR MORE THAN ONE PIECE OF A GIVEN PART NUMBER