Worchester solenoid - actuated gas-operated MCO isolation valves Page: 4 of 15
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ECN No. NA CGI No. CGI-SNF-D-46-1-P4-015 Page 2 of 13
Tite: WORCESTER SOLENOID-ACTUATED GAS-OPERATED MCO
ISOLATION VALVES S(
3. Question #3: Is the item ordered from manufacturer/supplier on the basis or specifications set forth in the manufacturers
catalog?
[ ] NO (the Item is not commercial grade)
X YES continue
X] All three criteria have been satisfied. The Item meets the definition of commercial grade.
Significanteasapplicadtion.o
Th a bor .e...e ,te ls Ven !nrct .o .se Snhe aprato rie 'P7/d th!. roow fras I
[ X ] Item is being purchased from a non ESL manufacturer supplier as commercial grade to be used in a Safety Class
application.
[ ] Item is being purchased from a non ESL manufacturer supplier as commercial grade to be used in a Safety
Significant application.
[ ] Item was purchased from a non ESL manufacturer supplier as commercial grade to be used in a Safety Class
application.
[ ] Item was purchased from a non ESL manufacturer supplier as commercial grade to be used in a Safety Significant
application.
Other 'like-for-like', similar, substitution, re lacement evaluation)
A. Part/Component Safety Function:
1. Maintain an intact pressure boundary/confinement.
2. Isolate the MCO in the event of loss of vacuum to reduce air inleakage or loss of He, prevent an
H2 explosion.
3. Maintain critical function during and after seismic event.
B. Part/Component Functional Mode:
Safety Function #1:
] ] Active - Mechanical or Electrical change of state is required to occur for the component to perform its safety
function
[XI Passive - Change of state is not required for the component to perform its safety function
Safety Function #2:
] X ] Active - Mechanical or Electrical change of state is required to occur for the component to perform its safety
function.
[ ] Passive - Change of state is not required for the component to perform its safety function
Safety Function #3:
[ ] Active - Mechanical or Electrical change of state is required to occur for the component to perform its safety
function.
[ X] Passive - Change of state is not required for the component to perform its safety function
C. Host Component Safety Function (if applicable):
i. NA
2.
Commercial Grade Item U3,rade Dedication Form
3,12/18/98
Rev. No. 0
Commercial Grade Item Upgrade Dedication Form
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Van Katwijk, Carl. Worchester solenoid - actuated gas-operated MCO isolation valves, report, July 1, 1999; United States. (https://digital.library.unt.edu/ark:/67531/metadc741935/m1/4/: accessed May 10, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.