RE: [MW:9960] Chemical cleaning of CS internal surfaces of vessels

Ali:
Check Bellow

 

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Date: Sun, 20 Feb 2011 22:17:36 +0300
From: mhaskar.aly@gmail.com
To: materials-welding@googlegroups.com
Subject: [MW:9947] Chemical cleaning of CS internal surfaces of vessels

Dear Ali Product Technical Bulletin Links open in a new window   ALKEN® LRSD 893  Material Safety Data Sheet   LIQUID INHIBITED SULFAMIC ACID CLEANER FOR ALL WATER SYSTEMS DESCRIPTION: ALKEN® LRSD 893 is an effectively inhibited liquid sulfamic-acid cleaner which is formulated to remove deposits in all types of non-potable water systems. ALKEN® LRSD 893 removes deposits of calcium carbonate, and calcium phosphate without attacking the underlying metal surfaces. The acid used in ALKEN® LRSD 893 converts these deposits into water-soluble salts; iron oxide removal is hastened by the ability of the acid to form a stable soluble complex with the iron in the deposits. ALKEN® LRSD 893 incorporates patented inhibition technology for a high degree of electrolytically restrained action to the attack by acids on base steel, while ensuring high efficiency descaling, rinsability and fume reduction. If iron oxides, copper compounds or corrosion are present in the deposit(s), ALKEN® LRSD 890 (liquid inhibited hydrochloric acid cleaner) or ALKEN® DRSD 886 dry inhibited proprietary acid cleaner) may be more effective. If oil and grease deposits are also detected, pre-clean the system with ALKEN® CW 883 for optimum system performance. Consult the Alken-Murray Technical Department for specific product recommendations based upon survey information and chemical analysis of the deposit.   CHARACTERISTICS:   Physical State:  Water-thin liquid  Color:  Transparent Light Pink  pH (11% solution):  0.37 @ 10.5 degrees C (50.9 degrees F)  Odor:  Amine  Specific Gravity:   1.105 @ 20 degrees C (68 degrees F)  Freezing Point:  -8 degrees C (17.6 degrees F)  Boiling Point:    ~ 102 degrees C (~ 215 degrees F)   Viscosity of 11% solution:   1.48 @ 15 degrees C (59 degrees F) & 0.7 @ 60 degrees C (140 degrees F)     ADVANTAGES: Mild acid cleaning without corrosion Mildest inhibited acid cleaner/descaler offered by Alken-Murray Corporation Liquid acid stays in solution when compared with dry powder acids Mixing is easier than with dry powders DOSAGE DIRECTIONS: The dosage of ALKEN® LRSD 893 needed to clean a system depends on the size of the system, the type of deposit present, and the total amount (or thickness) of the deposit. Generally, ALKEN® LRSD 893 is used in a twenty percent concentration in water. Heavier deposits may require higher dosage. HANDLING: ALKEN® LRSD 893 is a concentrated liquid acid cleaner/descaler. Store in cool dry place. Store in a tightly closed container. Wash thoroughly after handling. Use only in a well ventilated area. Avoid contact with skin, eyes, and clothing. Should contact occur, immediately flush area with large amounts of water. Do not ingest or inhale mists or vapors. Strict adherence to the safety procedures prescribed, especially those in the Material Safety Data Sheet, is necessary in order to handle and use this product safely. DOT Proper Shipping Name: Corrosive Liquid, N.O. S. (Contains Sulfamic acid, solution) Class 8, UN 1760, PG II VISCOSITY: Viscosity was tested using a Cannon® Rotational Viscometer, model LV-2000, a low viscosity attachment, a Cannon® water jacket and #4 spindle with temperature controlled by a Haake® constant temperature water bath, model F3-K. A correction factor of 1.11 was applied after calibrating with Cannon® Viscosity Standards.   Temperature Degrees C Viscosity  5  1940   2.18  10 1680 1.89  15  1480  1.66  20  1320  1.49  25  1170  1.32  30  1060  1.20  35  970  1.10  40  880  1.00  45  805  0.92  50  730  0.83  55  685  0.78  60  640  0.73  65  610  0.70  70  580  0.67   PACKAGING : ALKEN® LRSD 893 is is generally packaged in 55-gallon polyethylene drums which conform to Performance Oriented Packaging Specifications. Product can be packaged in 5 gallon pails if a minimum order of 10 pails is placed at one time. Update; 03-09-2007 E-mail: chemical@alken-murray.com  Clear-Flo || Even-Flo || Demulsifier || Polymers || Chemicals || American SH Cats  Chemical Products Index Thank you for reading my question & answering the same.   We have one vessel having heavy rust on internal surfaces. The vessel is mounted on skid & Blast cleaning is not possible.   Can anybody suggest what chemical can be used for   Cleaning. Passivation after cleaning For inhibitor .   Thank you in advance   Aly Kuwait

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