ML23101A189
| ML23101A189 | |
| Person / Time | |
|---|---|
| Site: | 07103098 |
| Issue date: | 04/11/2023 |
| From: | Garcia-Santos N Storage and Transportation Licensing Branch |
| To: | Boyle R US Dept of Transportation (DOT), Office of Hazardous Materials Safety |
| Garcia-Santos N | |
| Shared Package | |
| ML23101A187 | List: |
| References | |
| A33010, EPID L -2023-DOT-0002 | |
| Download: ML23101A189 (2) | |
Text
Staggered Request for Additional Information U.S. Department of Transportation Japanese Approval Certificate No. J/2009/AF-96 Docket No. 71-3098 Model No. GP-01
GENERAL (GEN)
RAI-GEN-1 Replace all references in the GP-01 SAR to TS-G-1.1, Advisory Material for the IAEA Regulations for the Safe Transport or Radioactive Material, with SSG-26 (Rev 1), Advisory Material for the IAEA Regulations for the Safe Transport or Radioactive Material (2018), to appropriately coincide with the use of SSR-6, Revision 1 (2018) for this application.
In the GP-01 SAR, on page II - B - 9, for example, the applicant refers to TS-G-1.1, which, since the SAR has been revised to meet the requirements of SSR-6, Revision 1 (2018), the correct reference should be to SSG-26 (Rev 1) which is the Advisory Material that corresponds to SSR-6, Revision 1 (2018). Note that for this particular reference to TS-G-1.1, paragraph 728.31 has not changed in SSG-26 (Revision 1), so the paragraph reference is still correct.
STRUCTURAL EVALUATION (St)
RAI-St-1 Provide the following information:
- a. the damping value considered to determine the amplitude amplification factor provided in Chapter II -A.4.7 of the SAR as well as the basis to choose the damping value.
- b. clarify the statement provided in Chapter II -A.4.7 of the SAR that refers to a conservative amplification, when the damping value considered is stated to be non-conservative (i.e., without conservative consideration).
Chapter II-A.4.7 of the SAR evaluates the effects of vibration or vibration resonance that may arise under routine condition of transport. In this chapter, it currently states,
As shown in (II)-A Figure 13, at a frequency ratio of 0.67 (=20/29.8), the displacement amplitude factor is about 200% even without conservative consideration of damping. Generally, acceleration of the vibration generated by trailers, etc., during transport is less than 2G, even taking into account the passing over bumps, etc., so the load on the packaging is less than four times the load on the package, even if amplification is conservatively considered to be 200%. [emphasis added]
The statement above seems to be contradictory in terms of the conservatism of the damping value.
This information is necessary to ensure compliance with the requirements in paragraph 613 of the IAEA SSR-6, 2018 Edition.