skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Peach bottom recirculation piping replacement ALARA program

Abstract

In late 1983, Philadelphia Electric Company (PECo) began detailed planning to replace the recirculation, residual heat removal, and part of the reactor water cleanup piping of the Peach Bottom Unit 2 reactor. Included in this work was an estimate of the collective exposure expected during piping replacement. That initial estimate, 1945 man-rem, is compared with the actual collective dose incurred during the piping replacement program. Also included are the exposures incurred during two additional tasks (safe end replacement and recirculation pump disassembly and decontamination) not considered in the initial estimate.

Authors:
; ;
Publication Date:
Research Org.:
General Electric Co., King of Prussia, PA
OSTI Identifier:
6885451
Report Number(s):
CONF-860610-
Journal ID: CODEN: TANSA; TRN: 87-016213
Resource Type:
Conference
Resource Relation:
Journal Name: Trans. Am. Nucl. Soc.; (United States); Journal Volume: 52; Conference: American Nuclear Society annual meeting, Reno, NV, USA, 15 Jun 1986
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; PEACH BOTTOM-1 REACTOR; REACTOR MAINTENANCE; PEACH BOTTOM-2 REACTOR; PEACH BOTTOM-3 REACTOR; RADIATION PROTECTION; ALARA; DECONTAMINATION; PIPES; PRIMARY COOLANT CIRCUITS; PUMPS; RADIATION DOSES; REMOVAL; RHR SYSTEMS; TRAINING; VALVES; WELDED JOINTS; BWR TYPE REACTORS; CLEANING; CONTROL EQUIPMENT; COOLING SYSTEMS; DOSES; ENERGY SYSTEMS; ENRICHED URANIUM REACTORS; EQUIPMENT; FLOW REGULATORS; GAS COOLED REACTORS; GRAPHITE MODERATED REACTORS; HELIUM COOLED REACTORS; HTGR TYPE REACTORS; JOINTS; MAINTENANCE; POWER REACTORS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS 210100* -- Power Reactors, Nonbreeding, Light-Water Moderated, Boiling Water Cooled

Citation Formats

Englesson, G.A., Hilsmeier, A.E., and Mann, B.J. Peach bottom recirculation piping replacement ALARA program. United States: N. p., 1986. Web.
Englesson, G.A., Hilsmeier, A.E., & Mann, B.J. Peach bottom recirculation piping replacement ALARA program. United States.
Englesson, G.A., Hilsmeier, A.E., and Mann, B.J. 1986. "Peach bottom recirculation piping replacement ALARA program". United States. doi:.
@article{osti_6885451,
title = {Peach bottom recirculation piping replacement ALARA program},
author = {Englesson, G.A. and Hilsmeier, A.E. and Mann, B.J.},
abstractNote = {In late 1983, Philadelphia Electric Company (PECo) began detailed planning to replace the recirculation, residual heat removal, and part of the reactor water cleanup piping of the Peach Bottom Unit 2 reactor. Included in this work was an estimate of the collective exposure expected during piping replacement. That initial estimate, 1945 man-rem, is compared with the actual collective dose incurred during the piping replacement program. Also included are the exposures incurred during two additional tasks (safe end replacement and recirculation pump disassembly and decontamination) not considered in the initial estimate.},
doi = {},
journal = {Trans. Am. Nucl. Soc.; (United States)},
number = ,
volume = 52,
place = {United States},
year = 1986,
month = 1
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • This paper describes an as-low-as-reasonably-achievable (ALARA) program developed by the Philadelphia Electric Company (PECo) for a major plant modification: replacement of the recirculation, residual heat removal, and reactor water cleanup system piping at Peach Bottom Unit 3. Improved materials and improvements in piping system design are expected to result in long-term dose benefits to plant operations and maintenance personnel. Plant modifications of this scope, however, require special attention to control personnel dose, since construction activities for implementing the modifications require on the order of 100,000 person-hours in plant radiation fields. The average collective dose reported by boiling water reactor ownersmore » who have performed major piping system replacement is approx. 1700 person-rem, even though significant attention has been given to dose reduction. Normal plant ALARA procedures are generally not sufficient to achieve the 2000 person-rem personnel dose criterion established by the US Nuclear Regulatory Commission for a major modification of this kind.« less
  • This article describes several ALARA measures and awareness programs which were implemented during the recirculation piping replacement project at the Philadelphia Electric Company's Peach Bottom Power Station Unit 3. Due to the potential for accumulating high individual and collective doses, an aggressive, project-specific radiological protection program was instituted to maintain doses as low as reasonably achievable (ALARA). Additionally, it was very important to ensure that the project was managed in such a manner as to keep total project exposure below the NRC-recommended guideline of 2000 person-rem for pipe replacement activities.
  • The current regulatory climate continues to prod today's nuclear utilities toward safer and more reliable operation of their plants. U.S. Nuclear Regulatory Commission guides NUREG-0660, NUREG-0696, and Supplement I to NUREG-0737 have all set forth increased requirements for plant monitoring. In response, the industry has looked at their existing plant computer systems as targets for enhancement or upgrade. This external pressure is nearly matched by the increasing demands made on existing computer systems by utility engineering and operations departments. The longer utilities postpone this evolution, the more likely they are to replace the entire system rather than upgrade the existingmore » one. The older systems become harder to maintain and eventually are technically inferior to new systems, which have benefited from advances in computer technology in recent years. Enhancements become less economically advantageous than system replacements as the spread in technology widens. The object of this paper is to describe the Plant Process Computer Replacement Project at Philadelphia Electric Company's (PECo's) Peach Bottom Atomic Power Station. This paper explores (a) the impact on the plant, (b) the design and engineering services required, and (c) the planning and communication essential to a successful computer replacement project.« less