ML20214W490
| ML20214W490 | |
| Person / Time | |
|---|---|
| Site: | 07109151 |
| Issue date: | 11/24/1986 |
| From: | Bush F LN TECHNOLOGIES CORP. (FORMERLY LONDON NUCLEAR SVCS |
| To: | |
| Shared Package | |
| ML19292G392 | List: |
| References | |
| WM-011, WM-11, NUDOCS 8612100249 | |
| Download: ML20214W490 (7) | |
Text
N O.
REvlSION PAGE WM-011 G
1 of 7 TIT d SOAP BUBBLE LEAK TEST LN TECHNOLOGIES CORPORATION TECHNOLOG8ES TYPE A SHIPPING CASKS
.C O RPO A ATION f"*c-
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COPYRIGHT C 1986 BY LN TECHNOLOGIES CORPORATION ALL RIGHTS RESERVED.
NO PART OF THIS DOCUMENT MAY BE REPRO-DUCED OR TRANSMITTED IN ANY FORM OR BY ANY MEANS, ELECTRONIC OR MECHANICAL, INCLUDING PHOTOCOPYING, RECORDING OR BY ANY INFORMATION STORAGE AND RETRIEVAL SYSTEM, WITHOUT PERMISSION IN WRITING FROM LN TECHNOLOGIES CORPORATION, EXCEPT FOR STRICTLY CONTROLLED DISTRIBUTION, FOR EVALUATION PURPOSES.
l 8612100249 861120 PDR ADOCK 07109151 C
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O'RIGINATOR DATE' CHECKED 0A #
DATE' 7 MANAGER DATE
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REVISION PAGE WM-011 G
2 of 7 TABLE OF CONTENTS Page 1.0 PURPOSB 3
2.0 APPLICABILITY 3
3.0 DEFINITIONS 3
4.0 REFERENCES
3 5.0 RESPONSIBILITIES 4
6.0 EQUIPMENT 4
7.0 PROCEDURE 4
8.0 ACCEPTANCE CRITERIA 5
9.0 RECORDS 6
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Figure 1 - Test Performance Form 7
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REVISION PAGE WM-011 G
3 of 7 1.0 PURPOSE This procedure states the requirements for performing a Low Pressure Soap Bubble Leak Test for LN Type A shipping casks.
The fabrication contractor shall submit for approval detailed leak test procedures.
The purpose of this test will be to check the integrity of welds, threaded fittings, flanges and any other joints where pressure tests below 8 psi are adequate to meet contractural/ functional requirements.
2.0 APPLICABILITY This test shall be performed before painting on all LN Technologies Type A shipping casks prior to acceptance from l
I a fabricator.
Additionally, the test shall be performed yearly as a verification of gasket and gasket seating surfaces integrity.
This soap bubble leak test is sensitive for leak testing where a sensitivity of no greater than 10-3 3
atm.cm /sec is required.
3.0 DEFINITIONS None.
4.0 REFERENCES
4.1 ANSI N14.5, 1977 - American National Standards for leakage tests on packages for shipment of radioactive materials.
4.2 Code of Federal Regulation (CFR) Title 10 Part 71 O
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REVISION PAGE WM-011 G
4 of 7 5.0 RESPONSIBILITIES Quality Assurance Manager or his designee -
shall witness the performance of the applicable leak test and sign the test performance form (Figure 1).
6.0 EQUIPMENT p
The following equipment is required for a Low Pressure Soap Bubble Test.
6.1 Air Supply - A standard shop compressor or bottle compressed air capable of pressurizing the tested cavi-ty to 8 to 10 psig shall be utilized.
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6.2 Gauge - A properly calibrated gauge capable of indicat-ing 0 - 15 psi range with an accuracy of + 2% of the indicated reading shall be utilized.
6.3 Bubble Test Solution - A leak indicating solution equi-valent to the following shall be utilized:
Dasco-Kleen Leak-Finding Compound #3183 D.
A.
Stewart Oil Company 2727 S.
Gray Street Chicago, Illinois 60623; 6.4 Relief valve - A relief valve set and checked at 10 percent over maximum pressurization pressure.
7.0 PROCCOURE l
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7.1 The test shall be conducted by LN Q.A. approved
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REVISION PAGE WM-011 G
5 of 7 7.2 The item shall be leak tested with all lids, gaskets, plugs, valves, and fasteners in place and in the normai closed position.
The only exception shall be the port or valve utilized to pressure the cavity.
CAUTION:
IF THE CASK LEAK TEST IS TO BE CONDUCTED WITH A LINER INSIDE THE CASK, LINER SHALL BE VENTED DURING THE TEST TO PREVENT LINER IMPLOSION.
7.3 Pressurize the cavity to 8 psi + 1,
-0 psi.
7.4 Close off or maintain pressure at pressurization location to hold specified pressure in cavity.
7.5 Apply the leak detecting solution to all gasketed areas, threads, seal welds, ports or valves by brush or Epray.
Inspect for bubbles.
7.6 Conduct leak test for 5 minutes.
i 8.0 ACCEPTANCE CRITERIA 8.1 No bubbles shall be visable to the unaided eye during the 5 minute test.
8.2 If bubbles appear during the test, weld integrity, gas-ket condition, flange or lid tightness, valve position, plug security, etc., shall be checked and the test rerun.
8.3 The results of the leak test shall be recorded on the Test Performance form (Figure 1).
8.3.1 Leak Test Pressure
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8.3.2 Gauge Model, P/N and S/N, as applicable 8.3.3 Leak Test Duration t
8.3.4 Date 8.3.5 Results, including discrepancies and acceptance 9.0 RECORDS Test Performance forms shall be maintained by the Quality Assurance Manager for one (1) year after completed usable life of tested item.
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7 of 7 Figure 1 TRST PERFORMANCE Equipment Tested:
Date Tested:
Leak Test Pressure:
psi Gauge Information:
Model #
Range Calibration Date Leak Test Duration:
minutes l
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PASSED FAILED Discrepancies:
l Next Leak Test Due (< 12 months):
j Date Signatures:
Test Performer Date l
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Quality Assurance Date m