TEST AND INSPECTION PER: 01-SAMSS-035, 01-SAMSS-333,01-SAMSS-043 NACE TM0284-2003 and ANSI/ASTM/API-5L
HIC Testing: ANSI/ASTM/API 5L Line Pipe
Pre-Fabrication/Production Requirements |
Specification Details / Notes: |
| Information to be Supplied by Purchaser | ANSI/API 5L, Annex H; 01-SAMSS-035, para 7. (note 8) |
| The Steel Mill | ANSI/API 5L, Annex H, para H.3.2 (note 8) |
| Pre-Inspection Meeting (PIM) | Purchase order, I&TP and manufacturers HIC testing |
| HIC Laboratory Approval | Manufacturer & Vendor HIC testing facility to be accepted by Saudi Aramco or its representative and 01-SAMSS-035, Annex H, para H.7.3.1.8 |
In process inspection & test requirement |
Specification Details / Notes: |
| Test Specimen selection | 01-SAMSS-035, Annex H, para H.7.1 |
| Test Specimen preparation | NACE Para. 4.2, 4.3 & Figure 3: Inspector to verify sample and mark for trace ability. |
| Cleaning of Samples | NACE Para. 4.4: Degreasing and rinsing. |
| Test Solution and Reagents | NACE Section 2. |
| Testing Apparatus | NACE Section 3 & Figure 1. (see note 4) |
| Control Sample shall be used to validate the test (note 2) | 01-SAMSS-035, Annex H, para H.7.3.1.8 (b) (note 5) |
| Specimen Orientation in Test Bath | NACE Section 6 & Figure 10: Placed in test vessel with wide effaces vertical and separated from the other samples by 6 mm on all sides. |
| Ratio of volume of Solution to Surface Area of Specimen | NACE Para. 6.1: Shall be a minimum of 3 ml per cm2. |
| Nitrogen purge and flow rate | NACE Para. 6.2.1 & 6.2.2: Purged for one hour, at a rate of at least 100 ml per minute, per liter of test solution. |
| H2S Purge and flow rate | NACE Para. 6.2.1 & 6.2.3: Bubbled through the test solution entered from the bottom of the bath. (note 6) |
| Temperature and PH | NACE Para. 6.3 &6.5: temperature of the test solution shall be 25#3#C. pH as per the requirements associated with solution A. |
| H2S concentration (Iodometric Titration Method) | NACE Para. 6.2.3 Appendix C; 01-SAMSS-035, Annex H, para
H.7.3.1.8 (d), As a minimum shall be 2,300 ppm. |
| Test Duration | NACE Para. 6.4: Test duration shall be 96 hours. The test time shall begin immediately upon completion of the initial 60-minite H2S introduction period. |
| Retesting Requirements | 01-SAMSS-035, Annex H, para H.7.3.1.10 |
| Final inspection & test requirements | Specification Details / Notes: |
| Evaluation and Acceptance Criteria of Test Specifications | API 5L, Annex H, para H4.3 and 01-SAMSS-035, Annex H, para H.4.3 modification. |
| Reporting Test Results | 01-SAMSS-035, Annex H, para H.7.3.1.1 |
Additional/Supplemental Requirements |
Specification Details / Notes: |
| Safety Requirements | NACE TM0284 Appendix “A”. |
| Safety Procedure and Work Instructions | See note 7. |
Notes:
- May only be waived by the responsible Saudi Aramco, ASC, and AOC Inspection
- Release of purchase order line items is dependant on the results of this test as directed by
- See form IR000003 for instructions on using this
- H2S in gas Cylinders is the only acceptable practice for generating H2S (Purity shall be 99.5% minimum). The used nitrogen shall be minimum industrial grade, 99.5%
- The control samples shall be provided by the manufacturer / vendor and demonstrate a CLR of at least 20% in solution “A” for the test parameters to be considered acceptable, only after this shall the actual specimens be
The rate of bubbling shall be at least 200 ml per minute, per liter of test solution for at least 60 minutes; thereafter a positive pressure maintained for the reminder of the test of H2S gas.
- Adequate ventilation, permanent H2S monitors located by the entry door and inside near the test setup (near ground level), alarm system with flashing light and horn, gas masks with either oxygen or proper cartridges, and safe disposal of spent solutions and
- Pseudo-HIC Resistant steel shall not be used to fabricate equipment intended for sour service application. Steel that passes the HIC test, but has not been intentionally manufactured to be HIC resistant steel shall not be
