ML20024C735

Forwards Adequacy of TMI-2 Procedures for Case of Loss of Reactor Coolant at Top of Pressurizer. Emergency Procedures 2202-1.5 & 2202-1.3 Not Adequate for Mitigating Effects of Loss of Coolant at Top of Pressurizer

ML20024C735
Person / Time
Site:	Crane
Issue date:	11/06/1979
From:	Michelson C Advisory Committee on Reactor Safeguards
To:	Etherington H Advisory Committee on Reactor Safeguards
Shared Package
ML20024C736	List: ML20024C735 ML20024C737
References
TASK-*, TASK-02, TASK-07, TASK-2, TASK-7, TASK-GB GPU-0478, GPU-478, NUDOCS 8307130184
Download: ML20024C735 (1)

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1 .2. m C7- / M J t ~ ~~~~ GN c=n 41rmam .. s ( : . ///&A. 23::J3 11/6/79. s j TO: Marttd Feherington, Chairman,'ACR5 TMI-2 Subcommittee C. Michelson, ACR5 Consultant /A[ #'#6% FT.DM:

SUBJECT:

. ADEQUACY Cr TMI-2 EMERGENCY PROCEDURES FOR THE CA OF REACTOR COOLANT AT THE TOP 0F THE PRE 55URIIER The attached report presents my views concerning this subject. ~ The conclusions indicate that the applicab1e procedure for the TMI-2 accident should have been 2202-1.5 (Pressurizar System Failure). However, in my opinion this procedurewas unacceptable fbr that purpose or for any other loss of reactor coolant at the top of the pressurizer. j Emergency Procedure 2202-1.3 (Loss of Reactor Coolant / Reactor Coolant System Pressure) was also examined and found to pmvide confusing symotoms ( N. and instructions for the case of a loss of reactor coolant at the top of 4 the pressurizar. Therefore, I believe thn pmcedure was not adequate to assure a correct response to the TMI-2 accident. In addition it was not l ~ the correct procedure to follow in view of the observed symptoms. l t Distribution: ACRS Members (235th Meeting Folder) ACAS Technical Staff I. Catton W. C. Lipinski T. Theofanous E. Jordan, I&E l ~ = l f - r. s t, .}}