ML20117P892
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MEMORANDLSI FOR:
Robert A. Capra, Director M
Project Directorate I-1 y"]1 l
Division of Reactor Projects - I/II J
FRON:
Scott Newberry, Chief Y
l Instrumentation & Control Systems Branch i
Division of Engineering & Sysy Technology j
SUBJECT:
SAFETY EVALUATION REPORT FOR CALVERT CLIFFS UNITS 182; COMPLIANCE WITH THE ATWS RULE' 10 CFR 50.62 l
(TACN05.59079&59000)
The Instrumentation and Control Systems Branch (ICSB) has completed its review of conformance of the Calvert Cliffs Units 142 design to the mquirements of the 3
l ATWS Rule. The ATWS Rule requirements for Combustion Engineering (CE) plants such as Calvert Cliffs require the installation of a diverse scram system (DSS),
diverse circuitry for initiation of turbine trip (DAFW. The ICSB review has(DTT, and j
for actuation of the auxiliary feedwater system i
concluded that the DSS, DTT and DAFW modifications at Calvert Cliffs to achieve conformance with the ATWS Rule requirements are acceptable as discussed in.the enclosed safety evaluation report.
It should be noted that the staff,is currently evaluating the need for technical specification operability and surveillance requirements for ATWS equipment. The results of the staff i
evaluation will be made available upon completion. Installation and o mration of ATWS equipment should not be delayed pending the outcome of the tecwitcal specification evaluation.
The ICS8's evaluation of licensee perfomance (SALP input) is also enclosed.
3; i
Scott Newberry, Chief Instrumentation and Control Systems Branch Division of Engineering & Systems Technology
Enclosures:
As stated cc w/ enclosures:
DISTRIBUTION:
B. Boger D. Lynch A. Thadani J.Fehringer(INEL)
ICS8RF(
S. McNeil R. Stevens S. Newberry R. Kendall
Contact:
R. Kendall (0EAB/D0EA),x21187 n
R. Lasky (SICB/ DEST),x20772
- SEE PREVIOUS CONCURRENCE t [
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1 MEMORANDLM FOR:
Robert A. Capra, Director i
Project Directorate I-1
}
Division of Reactor Projects - I/II FROM:
Scott Newberry, Chief Instrumentation & Control Systems Branch 3
Division of Engineering & Systems Technology i
SUBJECT:
SAFETY EVALUATION REPORT FOR CALVERT CLIFFS UNITS 182; COMPLIANCE WITH THE ATWS RULE, 10 CFR 50.62 TACN05.59079&59080)
The Instrumentation and ntrol Systems Branch (ICSB) has completed its review i
of conformance of the Cal ~rt Cliffs Units 1&2 design to the requirements of are to install a diverse scram system (DSS))
requirements for Combustion Engineering (CE the ATWS Rule. The ATWS Ru plants such as Calvert Cliff n of turbine trip (DAFW).(DTT), and diverse circuitry diverse circuitry for initiat eedwater system The ICSB review has for actuation of the auxiliary concluded that the DSS, DTT and FW modifications at Calvert Cliffs to achieve conformance with the ATWS Rule irements are acceptable as discussed in the enclosed safety evaluation report.
It should be noted that the staff is currently evaluating the need for t hnical specification operability and surveillance requirements for ATWS ipment. The results of the staff evaluation will be made available upon completion.
Installation and operation of ATWS equipment should not be delaye pending the outcome of the technical specification evaluation.
The ICSB's evaluation of licensee perfo ce(SALPinput)isalsoenclosed.
t Scott Newberry, Chief Instrumentation and Control Systems Branch Division of Engineering & Systems Technology
Enclosures:
As stated cc w/ enclosures:
DISTRIBUTION:
B. Boger D. Lynch Central Files A. Thadani J.Fehringer(INEL)
ICSBRF(2)
S. McNeil R. Stevens S. Newberry R. Kendall
Contact:
R. Kendall (ICSB/ DEST) x20778 ICSB:D
- DEST ICSB: DEST RKendall:bl oyce SNewberry 07/z4/88 0701/88 07/ /88