ML20212G157

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Revised Pages to Procedures Generation Package
ML20212G157
Person / Time
Site: Grand Gulf Entergy icon.png
Issue date: 10/31/1986
From:
MISSISSIPPI POWER & LIGHT CO.
To:
Shared Package
ML20212G149 List:
References
PROC-861031, NUDOCS 8703050274
Download: ML20212G157 (7)
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Micaiscippi Pow;r & Light Comptny KEY (1) Operations Manual Volume Number

-(2) Generating Unit: 1, 2, or S (shared)

(3) Section Number within the Operations Manual Volume. When there is only one section in a volume, this number may be deleted.

(4) Procedure Type: e.g., EP (5) . Sequential Number: The sequential numbering scheme begins with I and can go to 999.

Appendix 3B is a list of GGNS-1 EPs with their assigned numbers.

3.2.2 Title The EP titles are to be brief, yet descriptive. The flowchart format of the EPs enforces brevity. Two principles are to be used in titling'EPs:

a. The title is to be 10 words or less.
b. Important words are to be at or near the beginning of the title.

3.2.3 Revision Numbering Scheme Revision of EPs are numbered sequentially with arabic numerals with the revision date shown on each procedure. (See Section 3.4.1 for an example.)

3.3, EP Structure-The EP flowcharts are a primary document supplemented by system operating instructions, off normal event procedures, as well as other various plant procedures. They are single sheet laminated drawings used to reduce search time and facilitate concurrent step execution. They consist of the following.

a. EP Entry Conditions - Those specific plant parameter setpoints and conditions which require entry into the EPs as shown in section 3.4.4.
b. Action Steps (to bring the plant to a stable condition, or to branch to another procedure that will do so). Thes'e consist of the following:
1) Simple Action Steps (Section 3.4.5)
2) Retainment Steps (Section 3.4.6)
3) Decision Steps (Section 3.4.7)
4) Concurrent Execution Directions (Section 3.4.8)
5) Procedure Entry Directions (Section 3.4.9)
c. Exit Criteria - Conditional statements directing EP Exit upon fulfillment of the defined criteria.
d. Operator Precautions and Notes - Additional information to aid in execution of EP action steps as discussed in Section 3.4.10.
e. Identification Title Block - Procedure identification and status as shown in Section 3.4.1.

3.4 Flowchart Preparation Guidelines 3.4.1 Identification and Numbering A title block in the lower right corner of each flowchart will contain the EP number, title, revision number, revision date, page number, and plant name. See Figure 3-2.

8703050274 870302 3-3 PDR ADOCK 05000416 F PDR Revised October 1986

= = - ., .. -- .

Mississippi Powsr & Light Company PROCEDURE NO.

4 PROCEDURE TITLE GRAND GULF NUCLEAR STATION REV 0 REV DATE

.1 Figure 3-2. Sample Flowchart Title Block 3.4.2 ' Review and Approval The standard'GGNSI review and. approval title page appears on the'back

_ l of each flowchart in.a location that does not interfere with the function or use of the flowchart. This sheet contains blanks'to write l<

in the type of validation conducted and the date it was: performed. It also provides approval signature and date blanks for the preparer;-

i Technical Reviewer; Nuclear Plant Quality Assurance Director; Chemistry / Radiological Control Superintendent; Plant Safety Review Committee; and General Manager, Grand Gulf Nuclear Station. .See Figure 3-3.

PLANT OPERATIONS MANUAL Volume 05 05-S-01-EP-2 Section 01 Revision: 17 Date:

4 EMERGENCY PROCEDURE RPV CONTROL SAFETY RELATED Prepared / Date Type of Validation Reviewed: Date. Date i- Technical Review Director, QA

. Concurrence:

Chem Rad Control Superintendent PSRC:

Approved: Date

  • GGNS General Manager
List of Effective Pages
List of TCN's Incorporated 4
  • i

{gge: Revision TCN No.

j 1. 17 None Figure 3-3. Sample Flowchart Review and Approval Title Page 3.4.3 -Logic Symbols Figure 3-4 contains the standard flowchart symbols used in EPs.

3-4 Revised October 1986

, ,. - , , - , , . - -,. - - - . .... . - - . .- -.-.~.- --- - _.

Mississippi Powar & Light Comprny.

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3.4.11 Functional Flow and Branching

. a. _ Sufficient spacing will be allowed between paths so that the operator does not inadvertently enter an adjacent path.

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b. Arrowheads will be used on connecting lines to clarify the 1 direction of the path. Arrowheads will enter flowchart symbols from the top, not from the side.

3.4.12 Step Numbering Scheme- 3

a. Multiple-Branch EPs Multiple-branch EPs use a AA/B-C format, where:

AA = the procedure designator B = the branch of the procedure C = the sequential step number For example, Reactor Control, Level Branch, Step 3 would be numbered RC/L-3.

b. Single-Branch EPs Single-branch EPs use a AA-B format, where:

AA = the procedure designator ,

B = the sequential step number For example, Level Restoration,. Step 5 would be numbered LR-5.

3.i4.13 Placekeeping Aid

.3 l A is placed next to each. step as a placekeeping aid to the operat' ors. l 3 .14- Readability Guidelines l The followirg Guidelines

a. The ficwchart typeface will be in full capitals, at least 10 l points in size.

. b. The spacing between letters and between words will be distinct so j ;. that the flowcharts can be easily read in emergency lighting.

c. All EP lettering will r e black type on white background for the highest possible contr.st.

t

.. d. Copiesofflowchartsw}11beofhighquality,i.e.,without fuzzy

  • type.
e. The flowchares will have a non glare surface.
f. Tne flow charts will be no larger than 36" x 60" and no smaller than 8-1/2" x 11".

3-10 Revised October 1986

. . .- - .. . . . - . . . _ ~ . . . - .. . - . .. . . _

. .,_ 4 ;.

+. ,

Mississippi Power and Light Company-
g. -Two sets of flowcharted EPs will be maintained in the control room. Both sets will be 26" x 21" laminated on backing to be used by the Shift Supervisor who is in charge-of the plant at all times per GGNS-1 Procedure 01-S-06-2, " Conduct of'

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' Operations." The flowcharted EPs will be stored in the Control Room easily accesable'to Control. Room personnel.

Teamwork will be stressed in training on EP use held before r . procedure implementation.

3.4.15 Printed Operator Aids Figures (such as graphs and charts) and tables may be used to aid-the operator in performing the action steps. For example, a table of value could be used so that a calculation is avoided.

a. Labeling Scheme
1) Graphs and tables will be titled.

2)- Graphs and tables will be numbered in the XX Y-Z format, where XX is the branch of: the flow chart that the graph or table applies to.'

Y is the parameter of concern in the flowchart branch.

Z is a sequential number of graphs or tables used in the branch.

For example, Drywell Pressure Control Curve No. 2 i

would be numbered Curve DW-P-2.

l 3) The numbers and titles of graphs or tables will be placed above each graph / table.

4) Graphs and tables will be referred to by number within
the action step -

0 l-f 3-11 .-

Revised October 1986 l

, .c a

Mississippi Power and LightLCompany.

b .- Placement A graph or table is located'on~the flowchart near the first step that refers to it. Dashed lines. link the graph or table-and the' applicable step. A separate sheet (EP-3 page 2 of 2) will be provide with enlarged versions of graphs used in the EPS.

c. Quality

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Operator aids will be self-explanatory and legible under- the expected conditions of use. Specifically, 1)- The typeface will be in full capitals, at least 5 points in size.

2) The aid will-be a high-quality reproduction (or

-reduction), i.e., not a blurry photocopy.

d. Consistency The terms used in the aid (i.e., equipment designations, parameter units', etc.) will match those used in the procedure steps and in the control room itself. Units of measure and numerical values will be consistent with GGNS-1 Technical Specifications and with actual control room indicators.

3.5 Step construction 3.5.1 Level of Detail-The detail required in the flowcharts is that required by the least trained operator expected to use the procedure, specifically a newly trained and licensed operator working under emergency (stressful) conditions. .The flowchart format leaves little room for supporting instruction or information, and operators are trained on the procedures, so a cluttered flowchart will only hinder efficient performance.

3.5.2 Step Sequencing Steps will be listed in the required sequence. The operator assumes the sequence is mandatory unless the procedure specifically states otherwise.

Other consideration in sequencing action steps are:

a. Structure the control room action steps to ensure that minimum control room staff can perform the actions.

3-12 Revised October 1986

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'Missiscippi Powar'& Light Comprny b.- LWhere three or more conditions exist, a listing approach.is-preferable: L

~IF WHILE EXECUTING THE FOLLOWING STEPS l'

- REACTOR POWER IS ABOVE 4%.0R UNKNOWN AND RPV WATER LEVEL IS ABOVE - 1661N AND SUPP POOL TEMP IS ABOVE 110*F AND

. EITHER AN SRV IS OPEN OR OPENS OR DRYWELL PRESSURE IS ABOVE 1.23 PSIG, THEN RETURN TO STEP LP-9 l-c.. Where only one of two conditions produces an action, use the following approach:

[ II[ BORON INJECTION IS REQUIRED OR BORN INJECTION HAS BEEN INITIATED, THEN TERMINATE AND PREVENT INJECTION FROM ALL SYSTEMS EXCEPT BORON INJECTION AND CRD

If there were three or more conditions in the'above example, a listing approach would be preferable, with each condition linked by OR (underlined and centered between the conditions). . '

-j' -d. When an action step has specific conditions relating to sequence and plant parameters, use the following approach:

4 BEFORE CONTAINMENT TEMP REACHES 185*F i AND-IF

~-

CONTAINMENT PRESSURE IS BELOW CURVE' CN-T-1,

_ THEN INITIATE CONTAINMENT SPRAY I

l Conditional statements are treated in .further detail in -

NUREG-0899, " Guidelines for the Preparation of Emergency '

h ' Operating Procedures," Appendix B, and in INPO 82-017 " Emergency l Operating Procedures Writing Guidelines," Section 2.3.18. -

ll e. Spacing above and below centered logic words (i.e., AND, OR).in

(, conditional statements should be consistent throughout.the

! flowchart. The spaces between bulleted items (single or double space) should be consistent.

f i

l i 3-17 Revised October 1986

c '. . . -

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Micciccippi Pow 2r'&' Light Comp 1ny APPENDIX 3B - LIST OF CGNS-1 EMERGENCY PROCEDURES Number Title 1

05-S-01-EP-2 Reactor Pressure-Vessel.(RPV) Control 05-S-01-EP-3 Containment Control 05-S-01-EP-4 Secondary Containment-Control 05-S-01-EP-5 Radioactivity Release

_05-S-01-EP-Il RPV Level Restoration 05-S-01-EP-12 Emergency RPV.Depressurization 05-S-01-EP-13 R/V Flooding 05-S-01-EP-14 Reactor Level / Power Control 1

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3B-1 Revised October 1986 -

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