H Tank Farm

Nuclear Waste Operations/Disposal

Savannah River Site

Savannah River Remediation

Name: Bumgardner, Douglas

Telephone No.: (803) 208-8592

Name: Marsh, James R

Telephone No.: (803) 208-3818

Name: Shedd, Paul

Date: 12/20/2017

  1. Occurrence Report Number: EM-SR--SRR-HTANK-2017-0010

      Legacy Contamination Found on Building 241-100H Rooftop

  2. Report Type and Date: FINAL

Report Level: I

  5. Secretarial Office: EM - Environmental Management

  6. System, Bldg., or Equipment: 241-100H

  7. UCNI?: No

  Reviewed for Public Release:

  8. Plant Area: H-Area Tank Farm

9. Date and Time Discovered:     12/04/2017    17:40  (ETZ)

10. Date and Time Categorized:     12/04/2017    19:00  (ETZ)

11. DOE HQ OC Notification:

12. Other Notifications:

13. Subject or Title of Occurrence:

      Legacy Contamination Found on Building 241-100H Rooftop

6B(4) - Identification of onsite legacy radioactive contamination greater than 10 times the total contamination values in 10 CFR Part 835 Appendix D, exclusive of footnote 3 to Appendix D, and that is found outside of the following locations: areas routinely posted, controlled, and monitored for contamination; and areas controlled in accordance with 10 CFR Section 835.1102(c); and, per 10 CFR Section 835.604(a), any non posted area that is under the continual observation and control of an individual empowered to implement access and exposure control measures. For tritium, the reporting threshold is 10 times the removable contamination values in 10 CFR Part 835, Appendix D.

On December 4, 2017 at 1740 hrs., the Shift Operations Manager (SOM) was notified by Radiological Control Operations (RCO) that contamination was found in bird feces near the west end of Building 241-100H on the roof railing during a radioactive contamination survey of Building 241-100H. The bird feces probed 100,000 dpm Beta Gamma per 100 cm2 total contamination. This survey was being performed to support the upcoming roof repair. The Building 241-100H roof is a Controlled Area. This is being reported under Reporting Criteria 6B(4) Reporting Level 'I' for legacy radioactive contamination greater than the values in Title 10 Code of Federal Regulations (CFR) Part 835.

At the time of the contamination discovery there were no waste transfers through the 241-100H building. RCO and Operations personnel responded to the event and secured the area. The affected area has since been barricaded.

The 241-100H building roof was roped off and posted as an Inactive Contamination Area (CA) at the access ladder for the roof.

      1) Define the Scope of Work

      2) Analyze the Hazards

      3) Develop and Implement Hazard Controls

      4) Perform Work Within Controls

      5) Provide Feedback and Continuous Improvement

None identified.