ML18087A724
| ML18087A724 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 03/08/1983 |
| From: | Schaffer R, Robert Sweeney Public Service Enterprise Group |
| To: | |
| Shared Package | |
| ML18087A720 | List:
|
| References | |
| PROC-830308-01, NUDOCS 8303160492 | |
| Download: ML18087A724 (13) | |
Text
{{#Wiki_filter:SALEM GENERATING STATION INSTRUCTOR LESSON PLAN TITLE: ATWT LESSON NO.: DURATION: REVISION NO.: 0 DATE: 3-08-83 SUBMITTED: Rick~ DATE: 3-08-83 APPROVED-: <f% -£. DATE: b'P'ff'?
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INSTRUCTOR
REFERENCES:
TRAINING MATERIAL REQUIRED: STUDENT HANDOUTS: CLASSROOM REQUIREMENTS: I i
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Title:
ATWT NOTES III. Solid State Protection System Review A. Basic design function is to protect the core and ultimately to prevent fission product releases to the environment.
- 1. To ensure reliability in the design:
0 Redundancy 0 Independance 0 Diversity 0 Fail safe 0 Testability B. Re~undancy/Independance Redundancy ensures that a single failure of
- an instrument channel will not prevent proper protective action when required. To enhance redundancy a coincidence circuitry is used.
Two independant and redundant protection trains (A and B) both receiving identical info and both being able to trip the reactor arid actuate ESF. The instrument channels feeding the protection trains are both phy~ically and electrically separated. AC operated relays at the input of the trains provide electrical isolation between the inputs and the train logic. SSPS outputs are thru contacts which are operated by slave relays again providing electrical separation. C. Multiplexing The function of the multiplexing is to efficiently pass large amts. of info over the least number of conductors as possible. To do this a time-sharing technique is used. There are on the order of 2..00 lamps, 100 annunciators and 200 signals fed to the computer. SAOP8303:3 Page 1 'Date 03/08/83 Rev. 0
Title:
ATWT NOTES D. Protection Scheme/Signal Path TP-1 Example all 4 B/S supply both Trains. They operate their own Relays which operate contacts at the Input Bay. When the correct logic is made up the output relay operates which operates its contact to perform the safegaurd actuation/rx trip. The noR" cable between the trains allows either train to operate the Rx Status or Computer demultiplexer. For a Rx trip note that 'A' train deenergizes the 48V UV relay for the 'A' breaker and the
'B' bypass and the 'B' train gets the 'B' bkr and 'A' bypass.
SAOP8303:3 Page 2 Date 03/08/83' Rev. 0
SALEM GENERATING STATION INSTRUCTOR LESSON PLAN TITLE: ATWT LESSON NO.: DURATION: REVISION NO.: 0 DATE: 3-08-.83 SUBMITTED: Rick Sweeney DATE: 3-08-83 APPROVED: DATE: I
TITLE: . ATWT NOTES Specific Indications A. Terminology
- Demand = > some SPECIFIC ACTUATION is being demanded to be performed
- Confirmation = >is confirming some given actuation has been performed B. The yellow lites on the RP-4 status panel are energized via a 28V source via a contact.
This contact is operated by a relay located in the control board demultiplexer cabinet. The relay is being operated by the logic signal coming from the SSPS logic trains. Thus, these yellow lites would be classified as a demand signal.
- c. Th~_red reactor trip lite on RP-4 is a TP-1 different story. The red lite is also powered from a 28V source when RTXB or RTXA contact 11/12 are closed. To actuate these relays Bkr 'B' and Bypass 'B' must be open or TP-2 Bkr 'A' and Bypass 'A' must be open.
D. Overhead Annunciators
- F-46 Reactor trip Turbine Trip Confirmation alarm - actuated when the
'A' bkr & 'A' bypass are open or 'B' bkr
& 'B' bypass are open. Note this is a confirmation alarm for the reactor and a demand for the turbine.
- F-30 Turbine Trip P7 Reactor Trip Confirmation alarm for turbine as sensed by auto-stop oil presure and TV's and demand signal for reactor.
8305-SAOP:l
TITLE: ATWT NOTES E. In accordance with the EI for reactor trip the operator is required to perform certain actions until a reactor trip is "CONFIRMED". Confirmed by:
- RP-4 reactor trip lite
- F-46 Reac Trip Turbine Trip
- IRPI
- Rod bottom lites
- Green P.B. for rod drive bkrs
- Page 2 Date 3-8-83 8305-SAOP:l Rev.
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- SALEM GENERATING STATION I~STRUCTOR LESSON PLAN TITLE: ATWT LESSON NO.:
DURATION: REVISION NO.: 0 DATE: 3-08-83 SUBMITTED:~~ DATE: 3-08-83 APPROVED} / DATE: i~,13
TITLE: ATWT NOTES AD-16 Post Reactor Trip/Safety Injection Review and Unit Start-Up Approval Requirements I. Responsibilities In event of SI/Rx trip the Senior Shift Supervisor: o Perform a Post trip review The review items are listed on Form AD-16-A o E~aluate the review to ensure all equipment and systems operated as designed o Form AD-16~A cover items such as conditions prior to event testing/maintenance/evolutions in progress any major equip/systems out of service description of event sequence of events agree w/f irst out any unexpected alarms In event of SI/or Rx trip the Operations Manager: o Review Post Trip Review 0 Ensure cause of event has been identified *
. 0 Equip operation as designed o Determine if corrective actions required prior to S/U
- Page --Date 3-8-83 8305-SAOP:l Rev. 0
TITLE: ATWT NOTES II. Approval Requirements prior to S/U. o After planned unit outages => Operations Manager o After Reactor Trips/SI Upon satisfactory completion of hte Post trip review the Operations Manager may ~uthorize start-up. If cause of event not clear then the results shall be reviewed by SORC. Upon sat. completion of review then the General Manager may authorize S/U *
- Page 2 Date Rev.
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