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2013-10-01_REVISION - M1980244
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2013-10-01_REVISION - M1980244
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Last modified
8/24/2016 5:31:58 PM
Creation date
10/2/2013 8:25:06 AM
Metadata
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Template:
DRMS Permit Index
Permit No
M1980244
IBM Index Class Name
REVISION
Doc Date
10/1/2013
Doc Name
Response to Adequacy
From
CC&V
To
DRMS
Type & Sequence
TR68
Email Name
TC1
Media Type
D
Archive
No
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TECHNICAL SPECIFICATIONS <br />B. Samples shall be cut by CONTRACTOR as the seaming progresses. Sampling locations shall be <br />determined by CERTIFYING ENGINEER. CQA Monitor must witness the obtainment of all <br />destructive test samples by CONTRACTOR. CONTRACTOR shall mark all samples with their <br />seam number, date, welding machine number, welding technician identification, extruder and <br />nozzle /wedge temperature, and ambient air temperature. CONTRACTOR shall document the date, <br />time, roll and seam number, ambient temperature, and pass or fail description. All holes in the <br />geomembrane resulting from obtaining the seam samples shall be immediately repaired. All patches <br />shall be vacuum tested. <br />C. The samples shall be a minimum twelve (12) inches wide by twenty -four (24) inches long with the <br />seam centered lengthwise. The sample shall be cut into two equal length pieces, half to be given to <br />CC &V and the other half kept by CONTRACTOR. <br />D. CONTRACTOR shall cut and test ten (10) one (1) inch wide specimens from his sample. All testing <br />shall be conducted at room temperature (60° F - 80° F) CONTRACTOR shall test five (5) specimens <br />for seam shear strength and five (5) for peel strength. Both inside and outside tracks of fusion seams <br />will be tested for peel strength. To be acceptable, four (4) out of the five (5) specimens must pass <br />according to criteria established in Section 2.1. Any specimen that fails through the weld or at the <br />weld /sheet interface shall be considered a failure, unless the weld strength exceeds the sheet strength, as <br />discussed in Section 2.1. The tensiometer shall have a grip separation of four (4) inches plus the width <br />of the seam. The seam is to be centered between the clamps. The grip separation rates for LLDPE are <br />twenty (20) inches per minute for shear and twenty (20) inches per minute for peel. These tests shall <br />not fail according to the criteria in Section 2.1. <br />E. CQA MONITOR must witness the testing of all destructive samples. Destructive tests will be <br />performed within two (2) days of the samples being obtained. <br />F. Failing tests shall be subjected to additional testing until a passing area is found. A passing area is <br />defined as a seam(s) bounded at each end by a passing destructive test. Seams will be tracked in each <br />direction until a passing destructive test is found or until a previous passing destructive test is reached. <br />Seams will be tracked according to the welding apparatus and the machine operator. The following <br />procedures shall apply whenever a sample fails the field destructive test: <br />1. CONTRACTOR can retrace the welding path to an intermediate location (at a minimum of ten <br />(10) feet from the location of the failed test in both directions), at CERTIFYING ENGINEER <br />discretion, and take a small sample for an additional field test. If this test passes, then the seam <br />shall be capped between the two passing locations. If the test fails, in either direction, the tracking <br />process shall continue until a passing area is found. <br />2. Over the length of seam failure, CONTRACTOR shall either cut out the old seam, reposition the <br />panel and reseam, or cap the failing area, as required by CERTIFYING ENGINEER. <br />3. If the area is reseamed, additional destructive field test(s) shall be taken within the reseamed area. <br />The reseamed sample shall be found acceptable if test results are approved by CERTIFYING <br />ENGINEER. If test results are not acceptable, this process shall be repeated until the reseamed <br />length is judged satisfactory by MANAGER and CERTIFYING ENGINEER. <br />4. Samples taken as the result of failed tests do not count toward the total number of destructive tests <br />required. <br />G. CONTRACTOR shall document all actions taken in conjunction with destructive test failures, with <br />CERTIFYING ENGINEER providing quality assurance documentation. <br />H. Failing seam lengths which were capped shall be non - destructively tested as described in Section 3.8. <br />3.10 DEFECTS AND REPAIRS <br />Geomembrane August 28, 2013 <br />02776.1 -14 Revision 0 <br />S \Projects \1550 - CC &V Field Spt CQA PSES Bldg \8 0 Project Engineering and Design \8 2 Specificanons\PSES Pipe Rack Liner Extension Specifications \02776 1 Ce n embrane docx <br />
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