Ariston Pacific, Inc. 5/9/2016 - Laserfiche WebLink

I 1 cutting blade without cutting the metal, then the bond is considered not effective I 2 and is rejected. 3 4 Coated areas which have been rejected or damaged in the inspection procedure 5 described shall have the defective sections blast cleaned to remove all of the I6 thermal sprayed coating and shall then be recoated. Before resubmittal and 7 inspection, those sections where coating has not reached the required thickness 8 shall be sprayed with additional metal until that thickness is achieved. I9 10 6-07.3(14)D Submittals 11 The Contractor shall submit to the Engineer, prior to abrasive blast cleaning, a 12 12 inch square steel plate, of the same material and approximate thickness of the steel 13 to be coated, blasted clean in accordance with Section 6-07.3(14)E. The sample 14 plate will be checked for specified angular surface pattern, the abrasive grit size I 15 and type used, and the procedure used. This plate shall be used as the visual 16 standard to determine the acceptability of the cleaned surface. In the event the 17 Contractor's cleaning operation is inferior to the sample plate, the Contractor shall 18 be required to correct the cleaning operation to do a job comparable to the 19 specimen submitted. 20 21 At the same time as submitting the abrasive blast cleaned steel plate sample, the I22 Contractor shall submit to the Engineer, a second 12 inch square steel plate of the 23 same material and thickness, cleaned and thermal spray coated in accordance with 24 the same processes and with the same equipment as intended for use in applying 1 25 the thermal spray coatings. The Engineer may request additional cleaned and 26 thermal spray coated samples to be produced and submitted coincident with 27 thermal spray coating of the items specified in the Plans to receive thermal spray I 28 coatings. 29 30 6-07.3(14)E Surface Preparation I 31 Surface irregularities (e.g., sharp edges and/or carburized edges, cracks, 32 delaminations, pits, etc.) interfering with the application of the coating shall be 33 removed or repaired, prior to wash cleaning. Thermal cut edges shall be ground to I 34 reduce hardness to attain the surface profile required from abrasive blast cleaning. 35 36 All dirt, oil, scaling, etc. shall be removed prior to blast cleaning. All surfaces shall 37 be wash cleaned with either clean water at 8000 psi or water and detergent at 2000 I38 psi with two rinses with clean water. 39 40 The surface shall be abrasive blast cleaned to near white metal (SSPC-SP 10). 1 41 The surface profile shall be measured using a surface profile comparator, replica 42 tape, or other method suitable for the abrasive being used in accordance with 43 ASTM D 4417. I 44 45 Where zinc coatings up to and including 0.009 inch thick are to be applied, one of 46 the following abrasive grits shall be used with pressure blast equipment to produce I 47 a 3.0 mils AA anchor tooth pattern: 48 49 1. Aluminum oxide or silicon carbide 1 50 mesh size: SAE G-25 to SAE G-40 51 52 2. Hardened steel grit I I AMENDMENTS TO THE 2014 STANDARD SPECIFICATIONS BOOK Revised: 8/3/15