As our readers are aware, Holtec International is tasked with placing Chernobyl’s 21,217 fuel assemblies in dry storage for the 100-year service life. The Chernobyl dry storage project is a multi-national donor funded project administered by the European Bank for Reconstruction and Development (EBRD). Holtec Highlights interviewed Mr. Igor Gramotkin, Chernobyl’s Director General, to seek his insights in decommissioning a stricken plant that might be valuable in tackling the challenges at Fukushima. (Japan is a donor country involved in funding the Chernobyl Project.)
The laws of nature dictate that over 60 percent of the thermal energy produced by a steam power plant must be rejected to the environment. The local source of natural water is the usual recipient of this “waste” heat. The rejection of the plant’s waste heat to the air, in lieu of water, has thus far been challenging because of the large land area and capital cost associated with conventional air cooled condensers (ACCs) – until now. Holtec’s R&D team proudly announces the successful development of a whole new genré of ACCs that require less than half of the land area of a conventional “A- frame” ACC (see illustration) presently sold by Holtec and other world suppliers. In contrast to the conventional ACCs made of carbon steel tubes with brazed aluminum fins, the new ACC features stainless steel tubes resulting in significantly reduced flow accelerated corrosion and iron transport problems that currently plague the ACC industry. The conventional A-frame ACC, shown below with HI- VACC for identical heat duty, illustrates the reduction in the system footprint area achieved by the latter.
We are pleased to report that Holtec International will submit a license amendment request (LAR) by Labor Day 2011 to enable the transfer of high burnup fuel with as little as three years cooling from the spent fuel pools into dry storage. This LAR will be submitted on the docket for Holtec’s HI-STORM FW MPC Storage System. As we reported earlier (Holtec Highlights 26.09), the HI-STORM FW MPC Storage System received its initial Certificate of Compliance from the USNRC on June 13, 2011 (USNRC Docket No. 72-1032). The presently approved certificate contains one regionalized heat load pattern for the MPC-37 and one for the MPC-89 and focuses on plants that have a broad mix of “new” and “old” spent fuel assemblies in their spent fuel pools.
We are pleased to announce that SMR, LLC has awarded a conceptual design contract to The Shaw Group Inc. to help complete the first phase of the ongoing development work on HI-SMUR 140. The contract essentially provides for deploying experts from Shaw’s 4,000+ person strong cadre of nuclear professionals to work alongside Holtec’s technology developers as an integrated design team. The initial tasks being pursued by the Shaw/Holtec team involve: development of the design criteria and of the safety systems; development of the architectural layout of the plant; optimization of the Rankine cycle; and development of the plant’s cost estimate.
The HI-STORM FW (Flood & Wind) MPC Storage System has successfully completed the NRC’s safety review and rulemaking process, including the public comment period (a unique feature of licensing in the United States) and is scheduled to be certified for general use under 10 CFR 72 Subpart L on June 13, 2011.