# Preparation of specimens for testing.

**Citation:** 49 CFR 173.462  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

(a) Each specimen (i.e., sample, prototype or scale model) must be examined before testing to identify and record faults or damage, including:

(1) Divergence from the specifications or drawings;

(2) Defects in construction;

(3) Corrosion or other deterioration; and

(4) Distortion of features.

(

## Document text

(a) Each specimen (i.e., sample, prototype or scale model) must be examined before testing to identify and record faults or damage, including:

(1) Divergence from the specifications or drawings;

(2) Defects in construction;

(3) Corrosion or other deterioration; and

(4) Distortion of features.

(b) Any deviation found under paragraph (a) of this section from the specified design must be corrected or appropriately taken into account in the subsequent evaluation.

(c) The containment system of the packaging must be clearly specified.

(d) The external features of the specimen must be clearly identified so that reference may be made to any part of it.

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-173.462>
- Source ID: `ecfr`
- SHA-256: `901e4ab3e8c0cbc5337ba2ca794cb6d3fe817cd79a9a4ccab5ee6d1fba9bdd3c`
- Retrieved: 2026-08-20T05:46:04.092Z
- Exported: 2026-08-22T21:13:59.200Z
- Document slug: `49-cfr-173-462`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "173",
  "section": "173.462",
  "subpart": "Subpart I—Class 7 (Radioactive) Materials",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```