ML20151C774
| ML20151C774 | |
| Person / Time | |
|---|---|
| Site: | 07109145 |
| Issue date: | 06/01/1987 |
| From: | Frazer W LN TECHNOLOGIES CORP. (FORMERLY LONDON NUCLEAR SVCS |
| To: | Macdonald C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| Shared Package | |
| ML20151C776 | List: |
| References | |
| 28274, LN-87-0197-B1, LN-87-197-B1, NUDOCS 8807220175 | |
| Download: ML20151C774 (1) | |
Text
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RETURN IQ 396-55 TECHNOLOGIES Lig
..GC.29201 (003) 2SG-43SS C OR PO A ATION 1501 KEY A
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,g 42 91987 ) Z Mr. Charles E.
MacDonald, Chief f
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Divinion of Fuel Cycle and Material Safety NMSS um stcuou United States Nuclear Regulatory Commission C) ocati can Washington, D.C.
20555
Subject:
Name change of the NUS-50 Series Shipping Casks
Reference:
Docket 71-9145
Dear Mr. MacDonald:
On September 30, 1986, London Nuclear Services purchased all the outstanding stock of the NUS Process Services Corporation.
The two organizations have been merged into a new company called LN Technologies Corporation.
Accordingly we are requesting that editorial changes be made to the cask Certificate of Compliance 9145 to reflect our new company name.
We request that the following changes be made.
Er_cE
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Model Number NUS-50 Series LN-50 Series 125, 225, 275, 125, 225, 275, 375 375 Drawings NUS Corporation LN Technologies 5025-M-2010, 5025-M-2010, Rev. A Rev. 1 Procedures Prefix NUS Procedures LN Technologists WM-011, WM-013, Procedures WM-031 WM-011, WM-013, WM-031 The application fee of $150.00 is enclosed (Ref. 10 CFR 170.12).
l If you have any questions related to this request, please contact me at (803),256-4355.
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REVISION PAGE WM-Oll G
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.s TITLE SOAP BUBBLE LEAK TEST LN TECHNOLOGIES CORPORATION l
T E C H No t.O GI E S TYPE A SHIPPING CASKS l
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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 l
INFORMATION STORAGE AND RETRIEVAL SYSTEM, WITHOUT PERMISSION IN WRITING FROM LN TECHNOLOGIES CORPORATION, EXCEPT FOR STRICTLY CONTROLLED DISTRIBUTION, FOR EVALUATION PURPOSES.
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'D A'T E OA 5' OATE
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REVISION PAGE N O.
WM-011 G
2-of 7 i
he TABLE OF CONTENTS Page 1.0 PURPOSE 3
2.0 APPLICABILITY 3
3.0 DEFINITIONS 3
4.0 REFERENCES
3 5.0 RESPONSIBILITIES 4
l 6.0 EQUIPMENT 4
7.0 PROCEDURE 4
8.0 ACCEPTANCE CRITERIA 5
9.0 RECORDS 6
Figure 1 - Test Performance Form 7
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REVIslON BAGE NO.
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 th is test will be to check the integrity of welds, threaded fittings, flanges and any other joints where pressure tests t-low 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 3
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 C, ode of Federal Regulation (CFR) Title 10 Part 71 O
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NO.
REVISION PAGE WM-011 G
4 of 7 I
i 5.0 RESPONSIBILITIES Quality Assurance Manager or his designee -
shall witness the performance of the applicable leak test and sign th e test performance form (Figure 1).
6.0 EQUIPMENT 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.
6.2 Gaugo - 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 PROCEDURE 7.1 The test shall be conducted by LN Q.A.
approved personnel,
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REVISION PAGE WM-011 G
S of 7 7.2 The item shall be leak tested with all lids, gaskets, plugs, valves, and fasteners in place and in the normal 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 pressurisation location to hold specified pressure in cavity.
7.5 Apply the leak detecting solution to all gasketed
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areas, th r e ad s, seal welds, ports or valves by brush or spray.
Inspect for bubbles.
7.6 Conduct leak test for 5 minutes.
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 tightnes;,
ralve position, plug security, etc.,
shall be checked and tim test rerun.
8.3 The results of the leak test shall be rewrded on ne Test Performance form (Figure
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8.3.1 Leak Test Pressore 9
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)dO REVISION PAGC WM-011 G
6 of 7
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8.3.2 Gauge Model, P/N and S/N, as applicable 8.3.1 Leak Test Duration 8.3.4 Date i!:-
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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REvlSION TAGE WM-011 G
7 of 7 1,
Figure 1 TEST PERFORMANCE Equipment Tested:
Date Tested:
Leak Test Pressure:
psi Gauge Information:
Model i sange Calibration Date Leak Test Duration:
minutes PASSED FAILED Discrepancies:
Next Leak Test Due
(<
12 months):
Date a
Signatures:
Test Performer Date Quality Assurance Date O