Resolution of Generic Safety Issues: Item A-24: Qualification of Class 1E Safety-Related Equipment (Rev. 2) ( NUREG-0933, Main Report with Supplements 1–35 )

DESCRIPTION

CP applicants for which SERs were issued after July 1, 1974, were required by the NRC to qualify all safety-related equipment to IEEE 323.⁹⁰ From the time this standard was originated, the industry developed methods that were used to qualify equipment in accordance with the standard. However, some of these methods had not been resolved to the satisfaction of the NRC.

In order to expedite the review and assess the adequacy of the equipment qualification methods and acceptance criteria used by NSSS and BOP vendors, the NRC determined that a generic approach was required. This item was originally identified in NUREG-0371² and was later determined to be a USI in NUREG-0510.¹⁸⁶

CONCLUSION

This USI was RESOLVED with the publication of NUREG-0588. ¹⁹ A new rule affecting future plants was also issued. MPA B-60 was established by DL/NRR for implementation of the solution at operating plants.

REFERENCES

0002. NUREG-0371, "Task Action Plans for Generic Activities (Category A)," U.S. Nuclear Regulatory Commission, November 1978. 0019. NUREG-0588, "Interim Staff Position on Environmental Qualification of Safety-Related Electrical Equipment," U.S. Nuclear Regulatory Commission, November 1979, (Rev. 1) July 1981. 0090. IEEE Std 323, "Qualifying Class 1E Equipment for Nuclear Power Generating Stations," The Institute of Electrical and Electronics Engineers, Inc., 1974. 0186. NUREG-0510, "Identification of Unresolved Safety Issues Relating to Nuclear Power Plants," U.S. Nuclear Regulatory Commission, January 1979.