ML20207K881

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Rev 0 to Sequoyah Element Rept, Instrumentation & Control Design,Radioactive Panel Drains Into Floor Drains
ML20207K881
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 12/19/1986
From: Mcnutt G, Russell J
TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20207K654 List:
References
229.2(B), 229.2(B)-R, 229.2(B)-R00, NUDOCS 8701090551
Download: ML20207K881 (29)
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, , . TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B)

SPECIAL PROGRAM REPORT TYPE: SEQUOYAH ELEMENT REVISION NUMBER: 0 m.I.

TITLE: INSTRUMENTATION AND CONTROL DESIGN Radioactive Panel Drains into Floor Drains PAGE 1 0F 27 REASON FOR REVISION:

l PREPARATION PREPARED BY:

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  • SRP Secretary's signature denotes SRP c c rrences re n fes.
  • b e,. TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B)

SPECIAL PROGRAM REVISION NUMBER: 0 PAGE 2 0F 27

1. CHARACTERI7ATION OF ISSUES:

Concerns: Issue:

3 XX-85-127-001 a. There is a potential for liquid "Sequoyah ' Hot' panel drains and airborne radioactive contamina-are routed into the floor drains tion spread as a result of drains I instead of closed tanks. from radioactive instrunent and Construction Dept. concern. CI sample panels being routed to has no further information." open floor drains rather than to -

closed equipment drains.

IN-85-143-003 "There are contaminated Instrument Drains going into open drains in the Raceway of I both Reactor Buildings.

Construction Dept. concern. CI has no further information."

IN-85-197-002 fn " Instrument drain lines (closed 4 47 system) coming off instrument racks in Reactor Building Unit 1 raceway area are connected to open floor drains that are vented to atmosphere inside R.B. #1. CI is concerned that '

due to high operating temperature inside R.B. during i operation that the radioactive l water coming from instrument

! panels will evaporate causing l airborne contamination to people working in or in this l area. Constr. Dept, concern.

CI has no further information."

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.. . TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B)

SPECIAL PROGRAM REVISION NUMBER: 0 PAGE 3 0F 27 4 Concerns:

IN-85-514-002

" Closed drain system, 276 system, 1/2" SS drain pipe empties into floor drain with open grating l in Unit 1 Reactor Building . .

Elev. 702' raceway area between containment liner and crane wall. CI does not -

remember azumith. CI is con-cerned that open grating on floor drain will lead to high radiation exposures to employees working in this area."

IN-85-748-001

" Raceway (reactor building #1 &

2) currently reactor building #2, i approximately 708' elevation.

The sealed drains coming off the td instrument panels are being tied into regular drains rather than into radiation drains. This has been repo.rted and no corrective action to date. No more information available at present." ,.

IN-85-952-001

" Hot systems, system 62, 64 and 68, instrument panels in Unit 1, Reator Bldg., raceway area, drain into open floor drains. CI feels these panels should draw into closed (contained) drain system.

CI has no further information."

IN-85-983-001

" Panels in raceway RB #1 and #2 are designed to drain into floor drain. There is a potential for release of radioactive material.

[ CI has no additional information."

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TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B)

SPECIAL PROGRAM REVISION NUMBER: 0 PAGE 4 0F 27

2. HAVE ISSUES 8EEN IDENTIFIED IN ANOTHER SYSTEMATIC ANALYSIS? YES NO X Identified by Not Applicable Date Not Applicable Documentation Identifiers:

Not Applicable

3. DOCUMENT NOS., TAG NOS.. LOCATIONS OR OTHER SPECIFIC DESCRIPTIVE IDENTIFICATIONS STATED IN ELEMENT:

Instrument panel drains for radioactive systems.

4. INTERVIEW FILES REVIEWED:

XX-85-127 IN-85-748 fGLc IN-85-143 IN-85-952 Y IN-85-983

\ *dEjl IN-85-197 IN-85-514 Only File XX-85-127 is germane to SQN and no additional information resulted from its review. The WBN files had information specific to WBN and of no relevance to the SQN concern or is, sues.

5. DOCUMENTS REVIEWED RELATED TO THE ELEMENT

See Appendix A.

6. WHAT REGULATIONS. LICENSING COMMITMENTS. DESIGN REQUIREMENTS. OR OTHER APPLY OR CONTROL IN THIS AREA?

See Appendix A.

7. LIST REQUESTS FOR INFORMATION. MEETINGS. TELEPHONE CALLS. AND OTHER DISCUSSIONS RELATED TO ELEMENT.

See Appendix A.

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,.. TVA NPLOYEE CONCERNS REPORT NUMBER: 229.2(B)

SPECIAL PROGRAM REVISION NUMBER: 0

( PAGE 5 0F 27

8. EVALUATION PROCESS:
a. Searched for basic TVA design criteria describing the SQN Drainage System.

s b. Reviewed the FSAR to establish design bases and methods for

! handling potentially radioactive (e.g., " hot") drains.

c. Reviewed instrumentation and sampling system drawings to -

t establish " hot" sources.

d. Reviewed TVA design details and drawings of instrument panels, sampling sinks, and related drains to identify drain connections, to trace ultimate disposition of drainage flow, and to evaluate any potential hazard either of release or to plant operating personnel.
e. Conducted physical walkdowns to confirm hot panel locations, inlet flow sources, and drain connections t- b
f. Sununarized reviews conducted above and determined j

significance of potential internal hazard and unmonitored release.

9. DISCUSSION. FINDINGS. AND CONCLUSIONS: ,

DISCUSSION:

a. , Generic Applicability

, Of the seven concerns listed in Section 1, only XX-85-127-001 r is germane to SQN. It states that "' hot' panel drains are routed into the floor drains instead of closed tanks." The i specific " hot" panel drains are not located or otherwise identified by the CI.

Concerns IN-85-143-003, IN-85-197-002, IN-85-514-002, lI IN-85-748-001, IN-85-952-001, and IN-85-983-001 were all i raised on WBN and are detailed expressions of the broad i'

concern raised on SQN. All are addressed here in the context of the one generic SQN issue.

The concerns, taken together, suggest that potentially radioactive drainage inventory may be released to the i f- environs because of the "open" nature of the SQN Drainage 05070 - 12/02/86 f{ l

l TVA EMPLOYEE CONCERNS REPORT NUM8ER: '229.2(8)

SPECIAL PROGRAM REVISION NUMBER: O

' l PAGE 6 0F 27 System. The presumed release path within the plant would arise from venting of gases or backflow of liquids through the open drain fixtures embedded in the ccncrete floor. The offsite release path postulated by interpretations of concern IN-85-983-001 would be via a presumed conventional

, sewage / storm drainage path as is the case with plumbing of this type in a commercial building designed to the Uniform Plumbing Code. While these concerns are accurately stated, to understand whether they require corrective action requires knowledge of the SQN drainage system design, specific -

identification of.the potentially radioactive (i.e., " hot")

4 drainage sources, and a knowledge of how the " hot" sources are connected through the instrument and sample panels to the drain systems. .Each subject is treated separately below.

b. Identification of " Hot" Sources In the context of the concerns, the terms " hot panels,"

" contaminated instrument drains," and " hot systems" are taken

to mean instrument panels or sampling sinks that receive inventory from sources having a reasonable potential for
q%qgg) jf carrying radioactive material. Generally this includes the primary loop (reactor coolant) and those auxiliary systems that handle reactor coolant.

Note 14 of Drawing 47W600-24 states that Systems 62, 63, 68, 74, 77, 81, and 87 "present radiation hazards and must have the panel drains routed to the closed drainag'e system."

These systems are functionally identified as:

l System 62 Chemical and Volume Control System (CVCS) i System 63 Safety Injection System (SIS)

System 68 Reactor Coolant System (RCS)

System 74 Residual Heat Removal (RHR)

System 77 Waste Disposal System (WDS)

System 81 Primary Makeup Water System (PWS)

System 87 Upper Head Injection (UHI) l Recognizing the potential for primary-to-secondary carryover in the steam generator, the sample lines f rom Steam Generator Slowdown were also identified as " hot" for the purpose of this evaluation.

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. . . TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B) f SPECIAL PROGRAM s

REVISION NUMBER: 0 I -[- PAGE 7 0F 27 I

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c. SON Drainage System J

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< Nomenclature Inconsistencies 1

} The FSAR and the design drawings both describe two principal

! building drainage " systems." The unrestricted application of 0 the term " system" initially led the evaluators to believe

, that there was an organized set of interacting drainage paths j classified on the basis of contamination potential (tritiated or nontritiated), containment effectiveness-(open or closed), -

g and connection type or location (equipment or floor). This was not the case.

In an effort to provide some uniformity, the evaluators have restricted the term " system" to describe the drainage paths and final repositories in each of the buildings. In the p Reactor Building there is only one drainage " system." The Auxiliary Building drainage system is divided into three "subsysten.s," each draining to a separate receiver. The terms "open and closed" were limited to describing the type g'

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97 of receiving connection at the drainage system inlet. All floor drains, by their very nature, are open, but equipment

, drains can be either open or closed. Design details exist 4 for both.

f- The FSAR used the terms " tritiated and nontritiated" to describe overall design philosophy. While tritiated drains are, by definition, radioactive, it is not correct to say f

73 that nontritiated drains are free of any potential for radioactive inventory. In using the terms " tritiated" and

] "nontritiated" therefore, the FSAR does not describe two l

" systems" as such. Rather, it is describing two general wastewater categories, along with several subcategories, in w its effort to convey an overall design basis.

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[ Nomenclature for individual items of equipment was found to

[ be similarly inconsistent. For example, the tank designated j " Tritiated Drain Collector Tank" on the flow diagrams is designated " Waste Holdup Tank" on the piping drawings. These inconsistencies are more easily treated and, in the following text, where dual identities are found, both are referenced, a

j Such inconsistencies may have confused the CI and probably i account for many of the concerns. It is also possible that

  • the absence of SQN design criteria specifically addressing ll  :

. drainage systems denied the CI the knowledge necessary to put

[h, his concern to rest. The closest related design criteria S

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., TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B)

SPECIAL PROGRAM REVISION NUMBER: 0 g

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PAGE 8 0F 27 were DC-V-8.1 and DC-V-8.2, dated 02/23/71, which address radioactive wastes. These design criteria generally require the designer to follow reactor vendor (Westinghouse) drawings and were inactivated 10/26/76. Therefore, there now exists no single source document that addresses this issue.

FSAR Description Since no SQN design basis documents were available that would establish an overall drainage system design intent, the -

j evaluators reviewed the FSAR description.

FSAR Section 9.3.3, Equipment and Floor Drainage System, and Section 11.2, Liquid Waste Systems, separate wastewater on the basis of its tritium concentration. Since tritium is an activation product generated in the reactor coolant, the handling of any tritiated wastewater must be consistent with the handling of any primary loop inventory. Tritiated wastewater is handled separately from nontritiated wastewater. "Nontritiated" wastewater is defined as wastewater with a tritium concentration of up to 10 percent

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of the tritium concentration of the primary (reactor) coolant. Above this concentration, the wastewater is considered tritiated.

I Tritiated wastewater is classified on the basis of dissolved oxygen content as " aerated" or "deaerated." Deaerated tritiated wastewater is collected in the Reactor Coolant Drain Tank or the CVCS Holdup Tank and recycled into the

, primary loop. Aerated tritiated wastewater is conducted to the Tritiated Drain Collector Tank, where it is treated prior

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i to reuse or release from the plant.

i Nontritiated wastewater is classified in the FSAR as "chromated" or "nonchromated." Chromated nontritiated j wastewater is collected in the Component Cooling System Surge

! Tank and recycled in the Component Cooling Water System.

i Nonchromated nontritiated wastewater is conducted to the Floor Drain Collector Tank, monitored, treated if necessary, and recycled or released depending on plant operating needs.

It is clear f rora the FSAR description that the SQN drainage system design philosophy centered around controlling release and reprocessing wastewater. Personnel exposure was not -

mentioned. This is consistent with the safety evaluation of

,, the process sampling system (FSAR Section 9.3.2.3) where the A presence of potentially radioactive ". . . sample lines

> outside containment are not considered hazardous because of their limited flow and nonessential nature."

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,, . .TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B)

SPECIAL PROGRAM i REVISION NUM8ER: 0 i PAGE 9 0F 27 Drawing Review With the basic design intent established by the FSAR, the' design drawings were reviewed to establish how the intent was -

carried into practice. The design drawings employ the terms "open and closed" and " floor and equipment." Drawings

, 47W851-1 and 47W852-1 through -4, Flow Diagrams, Floor and

(. Equipment Drains, show two major drainage systems, one in the l Reactor Building and one in the Auxiliary Building which is made up of three subsystems. The. drainage system of each .

building functions as described below.

Reactor Buildina Drainaae System. Drawings 47W476-2 through  !

-8, Containment Drains and Embedded Piping, show the drains 1

and drain piping inside the containment liner in the Reactor l Building. These drains and piping accept inventory from both the open and closed types of drain connections. The open drain connections are different variations of a traditional pipe and funnel arrangement; often a small drain tube extending down inside a larger diameter standpipe. These h open drain connections, which also include flush mounted hubs w%.)

embedded in the concrete floor (i.e., floor drains), would allow. overflow of wastewater if the drain receiving lines or headers became plugged. Any entrained gases would be free to vent from these open drain connections as well.

The closed type of drain connections are continuous from the equipment drain connection point to the drain headers.

Overflow of wastewater and venting of entrained gases would not occur in a closed type of drain connection.

The Reactor Building drain headers terminate in the Reactor

.,dilding Floor and Equipment Drain Sump. Therefore, both open equipment and floor drains and closed equipment drains are part of a conunon drainage system. The Reactor Building Drain System headers discharge to either the Reactor Building sump or to an auxiliary sump which is pumped back to the Reactor Building sump. From here the inventory is pumped to the Tritiated Drain Collector Tank (Waste Holdup Tank) or to the Floor Drain Collector Tank where it is sampled to establish treatment requirements prior to release or recycling. Based on this review, unmonitored or untreated .

release offsite is unlikely. l I

l Auxiliary Buildina Drainaae System. Three subsystems handle Each is described drainage within the Auxiliary Building.

l separately below.

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,, . TVA' EMPLOYEE CONCERNS REPORT NUM8ER: 229.2(B) s SPECIAL PROGRAM REVISION NUMBER: 0 PAGE 10 0F 27 1

1 j o The " lower level" Auxiliary Building drainage subsystem 1 has separate parallel headers from both open and closed 1 drain connections which discharge wastewater from level 653 of the building to the Auxiliary Building Floor and a} Equipment Drain Sump. This subsystem handles potentially radioactive inventory (e.g., RHR System leakage).

o The (tritiated) " upper level" Auxiliary Building drainage subsystem has separate parallel headers from .

open and closed drain connections that discharge wastewater from levels 734, 714, 690, and 669 of the building to the Tritiated Drain Collector Tank.

Separate headers are connected to the Tritiated Drain Collector Tank (Waste Holdup Tank) through a water seal arrangement which prevents venting of entrained gases back through the floor drains. Elevation differences prevent backflow of liquids from the closed to the open headers.

k o The (nontritiated) " upper level" Auxiliary Building

, W! drain subsystem uses open type connections to headers

  • that discharge to the Floor Drain Collector Tank.

Drawing 47W476-1, Annulus Floor Drains and. Embedded Piping,

? shows the drains and drain piping in the annulus between the containment liner and the outer wall of the Reactor Building. This piping drains into the Auxiliary Building

Passive Sump and from there to the Auxiliary Building Floor j and Equipment Drain Sump.

l Personnel Exposure o Since the Reactor Building Drainage System has closed <

equipment drain connections to open drain headers, the potential for backflow and venting exists. Because of the small volumes handled, the low contamination level of the ,

effluent, the large size of the receiving headers, and the elevation differences, backflow of potentially radioactiva u drainage into the floor drains is unlikely. Similarly, because of the small volumes, the tendency for dissolved gases to remain in the liquid, and the relatively low j inventory of dissolved gases that would be radioactive, the 1 venting of such gases through the open flow drains presents -

p an insignificant exposure issue. Operating temperatures are i'"

not sufficient to cause boiling. It must be recognized that vh the Reactor Building is not normally occupied during I'iM operation, when the exposure potential is highest. Any entry f to the Reactor Building is made under close administrative f 05070 - 12/02/86 1

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,, . TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B)

SPECIAL PROGRAM REVISION NUMBER: 0 PAGE 110F 27 f control with substantial health physics proced::res in place.

j The exposure potential due to drains is insignificant l j compared to the other hazards present. The total exposure l 1 potential within the Reactor Building is subject to 'I j continuing ALARA and health physics review. No changes have 3

been necessary as a result of these reviews. i In the Auxiliary Building, Drawing 47W478-1, Embedded Piping  !

Base Slab, and Drawings 47W479-1 through -11, Drains and Embedded Piping, show 63 open and 23 closed drain headers in .

the building. At the lowest level (El. 653), 17 open headers and 4 closed headers terminate in the Auxiliary Building sump i below water thereby effecting water seal isolation. At the T higher levels, 30 of the open drain headers connect to

} manifolds that terminate in the Floor Drain Collector Tank; )

i the remaining 16 open drain headers and all 19 of the closed

. drain headers connect to manifolds that terminate in the F

Tritiated Drain Collector Tank (which is called the Waste f Holdup Tank on these drawings).

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[ g.Eh In the Auxi' / Building, where access control is less

> restrictive ac where health physics controls are still

' Q*M enforced, the same argument as in the Reactor Building s against backflow of drains and venting of gases applies.

] Here, however, where the separated drains have common points a isolation, water seals are designed into the piping to i prevent the spread of airborne radioactivity into the open system. Some exceptions to this general design practice have been noted and are being handled under a separate program

, (App. A, 5.h & i). The elevation differences, drain piping size, and water seal isolation all reduce the exposure risk to insignificance.

l Release Control From a detailed review of the drawings, it is evident that  !

I the drainage in each building terminates in either the Tritiated Drain Collector Tank (Waste Holdup Tank) or the

, Floor Drair. Collector Tank in the Auxiliary Building. From these tanks the wastewater is pumped to the Waste Disposal i System. Discharge of any wastewater after treatment is subject to monitoring and is under administrative control.

No drainage is released to the environs without proper monitoring and treatment. -

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. TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B)

SPECIAL PROGRAM REVISION NUMBER: 0 fr PAGE 12 0F 27

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d. Panel Drains While the CI's suggest a more general concern about the control of potentially radioactive liquids, a more specific concern related to instrumentation and sample panel drains is also raised. This necessitated a review of the design drawings specific to these pieces of equipment.

Drawings 47W600-0-1 through -4, Instruments and Controls, list the instrument panels. The remaining 47W600 drawings, .

289 in all, include piping diagrams and details showing the process inlet lines (usually a 1/2-inch stainless steel pipe) and, if appropriate, the outlet drain lines. The review data for hot instrument panels are tabulated in Appendix B.

Drawings 47W625-1 through -21, Radiation Sampling System, include schematic piping diagrams of the individual sampling stations. These drawings show the source of each sample, the line to the appropriate sampling sink (usually 3/8-inch stainless steel tubing), and the drain connection from each sink. Data for sampling sinks are tabulated in Appendix C.

c %t. To be consistent with the foregoing, this review is also

y;y separated on a building-by-building basis.

Reactor Building The 47W600-series drawings, Instruments and Controls, show that ten hot instrument panels in the Reactor Building have drain connections. However, the drawings do not clearly indicate how these drains are connected to the Reactor Building drainage system.

The SQN Reactor Building panel drains are discussed in Nuclear Safety Review Staf f (NSRS) Investigation Report No.

I-85-921-SQN (App. A, 5.1). This report was prepared in response to Concern No. XX-85-127-002 (and is more fully discussed in SQN Element Report 232.2(B), Carbon Steel versus Stainless Steel Drainage Piping). NSRS Report I-85-921-SQN states that, as a result of the SQN Unit 2 Reactor Building Raceway walkdown where all panel instruments were physically examined by NSRS and a plant instrument engineer:

o "None of the panels has external drain tubes, pipes, or hoses attached."

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,, TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(8)

SPECIAL PROGRAM REVISION NUMBER: 0 PAGE 13 0F 27 o "When it was necessary to drain a section of

[ instrument] tubing within a panel, it was drained into a container for disposal later."

o . . . there was no direct draining . . . onto the f l oo r. "

o "The possibility of draining onto the floor does exist. However, this was not done as no informed technician would drain contaminated fluid on the floor .

and risk contaminating himself or others while 4

calibrating or performing maintenance on instruments."

The report concludes: "No drains were found connected to the panels."

1 4

It should be noted that the NSRS report restricts itself to the Unit 2 Reactor Building Raceway drains from instrument panels. A physical walkdown by Bechtel ECTF personnel

(App. A, 5.j) confirmed the above statement for SQN Unit 2 Mh but found one instrument panel (1-L-361) connected to an open Wd D' drain header in the SQN Unit 1 Reactor Building Raceway. In
addition, five instrument panels (1-L-187,1-L-191,1-L-358,
l-L-359, and 1-L-360) inside the crane wall in Reactor r

Building 1 and three instrument panels (2-L-191, 2-L-358, and i 2-L-360) inside the crane wall in Reactor Building 2 were four.J to be connected to open drain headers. For reasons i explained above under Personnel Exposure and' Release Cottrol, i this should not be cause for concern.

i i Auxiliary Puilding f Appendix B shows that only 32 of 121 hot Auxiliary Building

instrument panels have drain connections. Of these, 30 are connected to a closed drain header. Instrument Panels 1-L-27 and 2-L-27 are connected to drain headers identified as "open." However, these headers have no floor drain
connections and terminate in the Waste Holdup Tank (Tritiated Drain Collector Tank). Therefore, they have closed header i

characteristics. Data that were not available from the drawings were obtained from physical walkdowns by Bechtel ECTF personnel (App. A, 5.k & m).

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TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B)

SPECIAL PROGRAM REVISION NUMBER: O PAGE 14 0F 27 The data of Appendix C show that 13 of the 27 sampling sink drains in the Auxiliary Building are connected to closed drain headers. Five hot sampling sink drains are connected to headers identified as "open." However, these headers have no floor drain connections and also terminate in the Waste Holdup Tank (Tritiated Drain Collector Tank). Therefore, .

they have closed header characteristics as well.

The drains from sampling panels 18 and 28 are connected to an open drain header at a point below the floor drain openings. -

These panels draw samples from the Boric Acid Blender, the Containment Floor and Equipment Drain Sump, the Primary Loop Pressurizer Accumulators, and Steam Generator Blowdown. As described earlier, the small sample inventory is not sufficient to cause backflow in the header; any entrained gases would be released at the sample extraction point and vented off in the fume hood; and venting from the collector tank is prevented by water seals.

From this review, it was detennined that no Auxiliary

[.h,D Building panels are connected to open floor drains. As Qyy ~

described in the Auxiliary Building Drain System review above, these panel drains function in a way that prevents the release of radioactivity to the environment. All of the i panel drains ultimately terminate in closed collector tanks where the drainage is monitored and processed prior to reuse or release. ,

FINDINGS:

1

! o No hot instrument panel or sampling sink drains were found to be piped to open floor drains.

o Nine instrument panels (1-L-187,1,2-L-191,1,2-L-358, 1-L-359,1,2-L-360,1-L-361) were physically identified as

{ being connected to Reactor Building open drain headers at points lower than the openings of floor drains connected to

^

the same header. The design of the open drain headers precludes backflow and the nature of the drains inventory reduces personnel exposure potential or spread of contamination to insignificant levels.

. o Two sampling sink drains (Sinks 18 and 28) were found to be similarly connected to open drain headers. -

0 No liquid waste is released from these drain systems unless f9 it is first monitored and treated.

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TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B)

SPECIAL PROGRAM REVISION LUMBER: 0 PAGE 15 0F 27 CONCLUSIONS: .,

The SQN concern, XX-85-127-001, is correct as stated. There are cases where potentially radioactive panel drains are routed to headers that connect to open floor drains. However, no prohibition exists against this practice within certain design considerations.

These design considerations were employed at SQN to the extent that:

o Potentially radioactive inventory will not be released without proper monitoring and treatment -

o Potential exposure of operating personnel is consistent with ALARA guidelines and accepted health physics practices On these bases, the concern, while correctly stated, does not present a valid issue requiring corrective action.

10. CORRECTIVE ACTION:

No corrective action is required.

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I TVA EMPLOYEE CONCERNS

. REPORT NUMBER: 229.2(8) i SPECIAL PROGRAM REVISION NUM8ER: O PAGE 16 0F 27 3-l i APPENDIX A j

.I

5. DOCUMENTS REVIEWED RELATED TO THE ELEMENT:

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a. TVA Employee Concern Assignment Requests:

[ Concern XX-85-127-001 h Concern IN-85-143-003 Concern IN-85-197-002 -

)'- Concern IN-85-514-002 .

Concern IN-85-748-001

! Concern IN-85-952-001 Concern IN-85-983-001 1'

? b. TVA Drawings:

f< 17W300-Series Yard Piping

[ 47W476-1 Annulus Floor Drains and Embedded

+

Piping

47W476-2 through -8 Containment Floor Drains and Embedded

! . . QS . Piping

[ fMfy 47W478-1 Embedded Piping Base Slab g 47W479-1 through -11 Drains and Embedded Piping

) 47W560-21 Waste Disposal System 47W600-Series Instruments and Controls i 47W625-1 through -22 Radiator Sampling System

! 47W851-1,

- 47W852-1 through -4 Flow Diagram, Floor and Equipment i

Drains

c. TVA EN DES EP Manual Division Level Engineering Procedures
d. TVA, Sequoyah Nuclear Plant, Design Criteria Manual r

?! e. TVA, Sequoyah Nuclear Plant, Final Safety Analysis Report

f. TVA, Watts Bar Suclear Plant, Final Safety Analysis Report i

f g. Watts 8ar Nuclear Plant, Engineering Related Employee Concerns Subcategory / Element Review Sheetr, Subcategory 229, Element No. 229.2,(05/19/86)

h. Memo from J. A. Raulston, TVA, to J. C. Key, TVA, "Sequoyah i Nuclear Plant, Units 1 & 2 - Problem Identification Report .
l. (PIR) '- PIRSQNNEB 8624 (B45 860926 851)" (B45 861002 264), '

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TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B)

SPECIAL PROGRAM REVISION NUMBER: 0 PAGE 17 0F 27 APPENDIX A (cont'd)

1. Memo from J. A. Raulston, TVA, to C. A. Chandley, TVA,

" Nuclear Engineering Branch - Potential Generic Condition .

Evaluation for PIRWBNMEB 8658" (B45 860912 257) (09/12/86)

j. Memo from E. A. Croft, Bechtel, to D. L. Damon, Bechtel, "Walkdown Verification of Panel Drains, SQN Element 229.2" (11/18/86)
k. Memo from E. A. Croft, Bechtel, to D. L. Damon, Bechtel, "Walkdown Verification of Panel Drains, SQN Element 229.2" (11/19/86)
1. NSRS Investigation Report I-85-921-SM, " Reactor Building Raceway Drains" (03/07/86)
m. Memo from E. A. Croft, Bechtel, to D. L. Damon, Bechtel, "Walkdown Verification of Panel Drains, SQN Element 229.2" (11/'0/86) 6.

C3 ~

WHAT REGULATIONS. LICENSING COMMITMENTS. DESIGN REQUIREMENTS OR OTHER APPLY OR CONTROL IN THIS AREA 7

a. Regulatory Guide 8.8, Information Relevant to Ensuring That i

Occupational Radiation Exposures at Nuclear Power Stations Will Be As Low As Reasonably Achievable, Rev.3 a b. 10CFR50, Appendix I ,

i c. TVA DG-M18.7.1, Radiation Protection (ALARA) Design Guidelines j '

d. SQN FSAR Sections 9.3.3 and 11.2
7. LIST REQUESTS FOR INFORMATION. MEETINGS. TELEPHONE CALLS AND OTHER DISCUSSIONS RELATED TO ELEMENT.

I

a. RFI SQN-675 1

i b. RFI SQN-676 l

+

c. RFI SQN-679

~

d. RFI SQN-681 3 jQ;
q. y.
e. RFI SON-691 05070 - 12/02/86 1 l

, TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B)

SPECIAL PROGRAM REVISION NUMBER: 0 PAGE 18 0F 27 APPENDIX A (cont'd)

f. Telecon from Langtry to Henri von Straalen, Request for search of-interview files, (10/17/86) 9 Telecon from Langtry to Paul Nesbitt, TVA, Clarification of comments on List of Mechanical Issues, (10/20/86)
h. Telecon from Langtry to Paul Nesbitt, TVA, General review of concern, request for drawings, (10/21/86) .
1. Telecon from Langtry to Paul Nesbitt, TVA, Request for FSAR Sections 9.3.2, 9.3.3, and 11.2, (10/22/86)

J. Telecon from Langtry to Paul Nesbitt, TVA, Request for drainage drawings, (10/22.86)

k. Telecon from Langtry to Paul Nesbitt, TVA, Request for instrument panel drawings, (10/23/86)

[$ 1. Telecon from Langtry to Paul Nesbitt, TVA, Request for I

("f,f drainage flow diagrams, (10/27/86)

m. Telecon from Langtry to Paul Nesbitt, TVA, Request for drawings, (10/28/86)
n. Telecon from Langtry to Adrian Smith, TVA, Request for walkdown and identification of panels in raceway area of Reactor Building, (10/28/86)

O. Telecon from Langtry to Paul Nesbitt, TVA, Discussion of status of drawings: schematics versus layouts versus as-builts; request for vendor drawings, (11/01/86)

p. Telecon f rom Langtry to Adrian Smith, TVA, Request for data on sampling drains not shown on drawings, (11/03/86)
q. Telecon from Langtry to Paul Smith, TVA, Request for drainage drawings (11/04/86)
r. Telecon f rom Langtry to Dave Knudsen, Request for transmittal of drawings collected by Adrian Smith af ter item "p",

(11/05/86)

s. Telecon from Langtry to Moi Ibanez, Request for vendor drawings (11/06/86) 1 05070 - 12/02/86
i TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B)

SPECIAL PROGRAM REVISION NUMBER: 0 PAGE 19 0F 27 APPENDIX A (cont'd)

t. Telecon f rom Langtry to Moi Ibanez, Request for yard piping drawings, drainage B/M's, (11/06/86)
u. Telecon from Langtry to Ed Croft, Request for walkdown to identify Reactor Building drain connections not shown, (11/12/86)
v. Telecon from Langtry to Moi Ibanez, Request for drawings, -

(11/12/86)

w. Conference call from Damon, Griffith, Langtry to Mahlman, Nesbitt, et al, TVA, Discussed concern. Agreed on need to

" interpret" concern. Concluded either concern not valid or valid but no problem, (11/13/86)

x. Telecon from Langtry to Moi Ibanez, Request for DG-M8.1.6, (11/13/86)
y. Telecon from Langtrf to Moi Ibanez, Request for drawing,

(,'[#

/

(11/14/86)

z. Telecon from Langtry to Ed Crof t, Request for walkdown to identify Auxiliary Building drain connections not shown, (11/20/86) aa. Telecon from Langtry to Moi Ibant z, Request for drawing, (11/20/86) bb. Telecon from H. A. Mahlman to D. L. Damon, Discussion of preliminary report, request for confirmatory walkdown of all panel drain connections, (11/21/86) cc. Telecon from Langtry to Ed Crof t, Request for walkdown of all panel drain connections not previously inspected, (11/21/86) p 05070 12/02/86

q.g/ l TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B)

APPENDIX B

'SPECIAL PROGRAM REVISION NUMBER: O

' HOT" INSTRUMENT PANELS PAGE 20 0F 27 Drawing ~ Embedded Drain Header Description 47W600 Drawing Type Remarks Panal Elev Column WD Boron Recycle 145 None See Note 1 0-L-2 669 sA8 . Closed OK 1,2-L-5 653 vA7, 10 RHR Pumps, A-A 93 47W479-1 vA7, 10 RHR Pumps, A-A 93 47W479-1 Closed OK 1,2-L-12 653 Closed OK 1,2-L-13 653 vA7, 10 RHR Pumps, B-B 93 47W479-1 Waste Evap Feed Pump 148 None See Note 1 0-L-14 651 Wall uA7, 9 Containment Spray Pump A-A 131 None See Note 2 1,2-L-15 653 Closed OK 1,2-L-16 653 tA7, 10 Containment Spray Pump B-B 116, 131 47W479-1 I Holdup Tk & Gas Strip Pumps 114 47W479-1 Closed OK 1,2-L-17 653 sA9 Closed OK 1,2-L-22 653 vA7, 10 RHR Pumps, B-B 93 47W479-1 Emer Gas Treatst Unit B 81 None See Note 2 0-L-23 734 vA12 None Aww Note 2 0-L-25 734 uA12 Emer Gas Treatet Unit A 81 uAS,11 Letdown Heat Exchanger 114 47W479-7 Open OK See Note 3' 1,2-L-27 714 Closed OK 1,2-L-43 690 vA3, 13 Volume Control Tank 115 47W479-6 .

RCS System 174 47W479-6 Closed OK 1,2-L-47 690 tA4, 12 Closed OK See Note 4 rA4 Waste Gas Compressor A Pkg 47W479-6 0-L-49 690 None See Note 2 0-L-50 690 qA4 Waste Gas Compressor 137 rA6 Evap Cond Demin & Filter 181 47W479-6 Closed OK 0-L-51 690 Closed OK 1,2-L-55 690 VA7, 9 Contet Spray Heat Exch B 132 47W479-6 tA14 Waste Disposal 168 47W479-6 Closed OK l 0-L-59A, B 694 See Note 5*

Shield Bldg Exh Vent Flow None 1,2-L-90 791 145* Ann Insufficient Data 0-L-103 669 xA8 Waste Disposal System 166 0-L-ll3A, B 669 sA2 Gas Decay Tank 145 47W479-3 Closed OK Aux Waste Evap Feed Pump 146 None See Note 5 0-L-148 653 sA10 None See Note 1 1,2-L-150 669 sA4, 6 CVCS Holdup Tank 181 tAS, 11 CVCS Demin and Filter 117 47W479-6 Closed OK 1,2-L-153 690 See Note 1 Waste Gas Compressor Temp 87 None ,

0-L-156 690 rA3 104* Wall RCS System 172 See Note 6*

1,2-L-179 710 See Note 1*

172 None 1,2-L-180 693 114' 39-0 RCS System See Note 2*

44 None 1,2-L-181 693 80* 35-0 RCS System See Note 7*

1 -L-187 679 240* 46-0 React Big Flr & Eqp Drn Sp 88

= .

05120 (12/02/86) __ _ . _ . . . . . . . _

-;$ 0f.y '

Q . l.

APPENDIX B TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(8) .

' HOT" INSTRUMENT PANELS SPECIAL PROGRAM REVISION NUMBER: O PAGE 21 0F 27 Drawing Embedded Drain Header Panel Elev Column Description 47W600 Drawing Type Remarks 2-L-187 679 240* 46-0 React Big F1r & Eqp Drn Sp 88 None See Note 2*

1-L-190 679 289* Waste Disposal System 166 None See Note 8*

2-L-190 679 289* Waste Disposal System 166 None See Note 2*

1,2-L-191 693 238' 50-0 RCS, SIS & FW Misc Instrmts 28 See Note 7*

0-L-203 Gross failed Fuel Detector 47W625-9 47W476-2 See Appendix C 0-L-206 690 wA8 Gas Analyzer 47W625-8 See Appendix C 1,2-L-207 690 wAS, 11 RHR Recirc Flow 200 None See Note 2 0-L-208 714 CL All Spent Fuel Pit Pump C 152 479479-7 Closed OK 1,2-L-226 679 310' 55-0 Reactor Coolant Flow I 80 None See Note 8*

1,2-L-227 679 75* 55-0 Reactor Coolant Flow II 80 None See Note 8*

1,2-L-228 679 195* 55-0 Reactor Coolant Flow II 80 None See Note 8*

0-L-229 734 val 2 Emer Gas Treat System 177 None See Note 1 0-L-230 734 val 2 Emer Gas Treat System 177 None See Note 1 1,2-L-231 690 wA8 Hot Sample Room Cub 1A, 2A 47W625-1 See Appendix C 1,2-L-232 690 wA8 Hot Sample Room Cub 18, 28 47W625-2 See Appendix C 0-L-233 690 wA8 Hot Sample Room Cub 1C 47W625-3 See Appendix C 0-L-238 653 rAl2 Floor Drn Coll Tank Level 148 None See Note 1 1,2-L-259 714 tA8 RHR HTX A Sup Hdr Flow Xmtr 136 None See Note 2 1,2-L-268 690 VA4, 12 Volume Control Tank 118 None See Note 1 1,2-L-296 714 tA8 RHR HTX 8 Sup Hdr Flow Xmtr 136 None See Note 2 0-L-314 690 qA4 Waste Gas Compressor B Pkg 474479-6 Closed See Note 4 0-L-316 653 wA8 Tritiated Drn Coll Tk Level 148 None See Note 1 0-L-317 638 rA4 Waste Gas Compress Sup Press 148 None See Note 2 0-L-350 714 cl All Spent Fuel Cooling System 152 47W479-7 Closed OK 1,2-L-358 693 346' RCS System 64 See Note 7*

l-L-359 693 9' RCS System 64 See Note 7*

2-L-359 593 9* RCS System 64 See Note 6*

1,2-L-360 679 332* RCS System 75 See Note'7*

l-L-361 679 352' RCS System 75 See Note'7*

2-L-361 679 352* RCS System 75 None See Note 2*

1,2-L-366 679 90* RCS Pressurizer Relief Tank 44 None See Note 5*

1,2-L-369 669 UA4, 12 RCS System 156 None See Note 1 0512D (12/02/86)

_y. _ .

n;-

@gv @w ..

a APPENDIX B TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B) ..

j

  • HOT" INSTRUMENT PANELS SPECIAL PROGRAM REVISION NUMBER: 0 i PAGE 22 0F 27 r

~

t . Drawing Embedded Drain Header Panel Elev Column Description 47W600 Drawing Type Remarks l

! 0-L-371 669 sA10 Waste Disposal System 166 47W479-3 Closed OK

! 1,2-L-374 710 uAS, 11 CVCS System 157 None See Note 1 0-L-375 673 xA8 Spent Resin Storage Tank 166 None See Note 1  :

l 0-L-377 763 uA7 Cask Decon Stor Tank Level 169 None See Note 2 l

1,2-L-394 -

45' Shield Bldg Vent Flow None See Note 5*

1,2-L-395 -

45* Shield Bldg Vent Flow None See Note 5*

' 8' 0-L-397 -

Annulus Flow None See Note 5*

, 1,2-L-398 -

45' Lower Annulus Flow None See Note 5*

l 1,2-L-399 -

45' Lower Annulus Flow None See Note 5*

i 1,2-L-433 788 150' Annulus Diff Pressuro 89 None See Note 2* '

! l-L-474 705 291* Wall Train B Containment Pressure 89 None See Note 2*

} 2-L-474 705 291* Wall Train B Containment Pressure 89 None See Note 9*

j 1,2-L-515 714 vAS, 11 RHR Rt Line Pipe Brk Detect 288 None See Note 1 '

j 1,2-L-516 714 vAS, 11 RHR Rt Line Pipe Brk Detect 288 None See Note 1

1,2-L-517 714 VAS, il RHR Rt Line Pipe Brk Detect 288 None See Note 1
1,2-L-518 714 vAS, 11 RHR Rt Line Pipe Brk Detect 288 None See Note 1 1 ,

i I

3 Note 1. Panel has no drain connections.

Note 2. Panel has valved drain connections.

Note 3. The "open" drain. header to which this panel is connected has no floor drain or open equipment drain connections and terminates in the Waste Holdup Tank and therefore has the characteristics of a " closed" drain header.

1

! Note 4. The moisture separator is connected to a closed equipment drain. The compressor cooling j water drain is released to an open floor drain.

4 I

4 i

j i 0512D (12/32/86)

~

)

APPENDIX B TVA EMPLOYEE CONCERNS REPORT NUMBER: 229.2(B) ...

' HOT" INSTRUMENT PANELS SPECIAL PROGRAM REVISION NUMBER: O PAGE 23 0F 27 Drawing Embedded Drain Header Panel Elev Column Description 47W600 Drawing Type Remarks Note 5. Panel has capped drain connections.

Note 6. Panel has valved drain connections to a panel drain header; the header has a closed connection to an embedded drain line.

Note 7. Panel has valved drain connections to an open standpipe which is connected to an embedded drain line.

Note 8. Panel has valved drain connections to a panel drain header; such header has one end capped, the other end open.

Note 9. Panel has open drain connections.

  • Data not shown on drawings, obtained from walkdown.

0512D (12/02/86)

._ _ m i

  • APPE.5,8 m T. Le_ . . - , a m .2(8) - .

SawLlas 51:str SPECIAL Fwman REygsgen um8ER: 0 PAGE 24 0F 27 *'

hug tendoe Orain Needer Drain Connect Drain Detail _.

Sint Elev Colon Description 4N625 Orawing . Inlet _ *Not' Outlet Drautag Type Detail Type Detall- Type  ; Crements 2

t IA 600 un5 Stak M (Panel 1.L-231) -1 Meters 1. Not Lag Loop 1 & 3 Yes wel Control Tank 4AM79-6 Open OK 5ee Note 1 57521 2. Presserf ter Liguld Yes

3. Pressartaer Gas Yes
4. Vol Control Vent Yes
5. Inlet Nfs Sed Domin Yes .
6. Outlet Nis Bed Domin Des
7. Inlet Inn Exchange Yes
8. Outlet Ion Exchange Yes
g. CVCS Noldup Ta4 sectre Yes
10. Trtttated Dr Ta4 Recirc Yes 18 690 =All Stat 18 (Panel 2-L-231) Same as 14 2A 690 d5 $1nk 2A (Panel 1-L-232) -2 Waters 1. Outlet Scric Acid 81end No 1. Emer Sagle Sta 4N479-5 Open Not ALARA 57522 2. Accum Tank Ndr Outlet No 2. 4N600-107
3. Contet Drain Sump Yes
4. Acces Tanks 1. 2. 3 & 4 No
5. Steam Gen 81oudous 1 Yes
6. Steam Gen 81oudoun 2 Yes
7. Steam Gas 81oudoun 3 Yes
8. Steam Gas 81oudoun 4 Yes 28 690 d11 Sink 28 (Panel 2-L-232) Same as 2A IC 690 uA5 Sink IC (Panel 0-L-233) -3 Waters 1. Upstr Boron Inj Tank 1 Yes None shown 4N479-6 Open OK h e Note 1 57523 2. Onstr Boron Inj Tant 1 Yes
3. Upstr Boron Inj Tank 2 Yes
4. Dnstr Boron inj Tant 2 Yes
5. Upstr RM Each 1A Yes
6. Upstr RHR Each 18 Yes
7. LDstr RM Each 2A Yes
8. Upstr RHR Each 28 Yes
g. Wte Evap Cnds F1tr inlet Yes
10. Ute Evan Domin Outlet Yes
11. Oefore Evap Cads Domin 1 Yes .
12. Aftet Evap Cads Domin i Ves -
13. Before Evap Cads Domin 2 Ves
14. After Evap Cnds Domin 2 Ves
15. $!5 Pump Refueling utr 2 Yes
15. $!$ Pump Refueling Wtr 1 Yes
17. RW Pp Min F1 Line 14 & 28 Yes
18. RW Pp Min F1 Line 2A & 28 Yes 051 E (12/02/86)

A ._u

.y

$~ if .

APPENDIX C ;h TV4 EfrLOYE NANS REPORT n ! '.29.2(8) .

SAarLING $!self SPECIAL PROGRAM REV!5104 NUMBER: 0

. PAGE 25 0F 27 Dug Vendor Drain Header. Drafn Connect Drain Detail Sink Elev Column Description 4N525 Drawing Inlet *Not* Outlet Drawing Type Detail Type Detail Type Comment s

-A4 690 rA12 CVCS Sampling Station -4 N/A* 1. Inlet Soric Acid Tank 1 Yes N/A 4N479-6 Closed C-10 Closed D1 OK

2. Inlet Boric Acid Tanks C . Yes
3. Outlet Batching Tank C Yes
4. Inlet Boric Acid Tank 2 Yes 84 714 tA6 CCS & ERCW Sample sta -4 N/A 1. Dnste CCS Nt Exchgr A No N/A 4N479-7 Open 0-10 Open 01 OK
2. Dnstr CCS Ht Exchgr 8 No
3. Dnstr CCS Ht Exchgr C No
4. ERCW System A No
5. ERCW Sfsten 8 No
6. ERCW System C No E4-1A5 669 uA2 Aux FW Pump Sany Sta -4 R/A Aux FW Pune 1A-5 No N/A 4N479-3 Open D-10 Open 01 OK E4-2A5 669 uA14 Aux FW Pune Sano Sta -4 N/A Aux FW Pump 2A-5 No Same as E4-1A5 A5 669 mA7 RWP Filter Saap Sta -5 N/A 1. Upstr RWP Filter No N/A 4N479-3 Closed C-10 Closed D1 Open drain OK Z. Dnstr RWP Filter No 85 714 =A7 SFP Cooling Sys Se Sta -5 N/A 1. Upstr 3FP Demin Yes N/A 4N479-7 Open 01 CK
2. Onstr SFP Demin Yes C5 734 vA5 Aux Bor Mkup Tk Samp Sta -5 N/A Aux Bo-on Mkup Tk Disch No N/A 47W479-11 Closed H1 Open drain OK 05 653 rA12 FDC Tk Rectre Samp Sta -5 N/A FDC Tk Rectre No N/A 4N479-1 Open D1 OK A6 669 sal Waste Disposal Saw Sta -6 N/A 1. Onstr Laundry Pumps Yes N/A 4N479-3 Closed D1 OK
2. Chem Dr Tk Rectre Yes 86 669 uA14 CVCS Mntr Tk Pung Sany Sta -6 N/A Dnstr Mntr Tk Paps A & B Yes N/A 4N479-3 Open 01 OK See Note 1 C6 669 rAIS CVCS Conc Filter Sany Sta -6 N/A Dnstr Conc Filter No N/A 4N479-3 Closed D1 Open drain OK D6 669 CL A5 WOS Cnds Pump Samp Sta -6 N/A Dnstr Waste Cnds Pumps No N/A 4N479-2 Open D1 OK 1-A7 690 sA4 Aux FW Pump Mdr San Sta -7 N/A 1. Aux FW-Pump Hdr 1A No N/A 4N479-5 Open D1 OK
2. Aux FW Pump Hdr 18 No 2-A7 690 sA12 Aux FW Pump Mdr Sam Sta Same as 1-47 87 669 mA8 WD5 Cask Decon Tk Sang Sta -7 N/A Cask Deconto Tank Yes N/A 4 N479-4 Closed OK 1-C7 690 MAS Baron Analyzer -7 N/A Dnstr Ltdn & Exc Ltdn HE Yes N/A (N479-6 Closed , OK 2-C7 690 wall Boron Analyzer Same as 1-C7 05130 (12/02/86)

L

'?

I ,. '

n., .>d,2[8) .

APPENDIX C 9cy . TVA DFLOVE k74 REPORT IPE . .

$AppLING $1C $PECIAL PROENAM REV!5!0N NuNeER: 0 PAGE 26 0F 27 - .

Dug Vendor - Drain Header Drain Connect Drain Detall Stak Elev Column Description 47W625 Draming inlet "Not" Outlet Drawing Type Detail Type Detail Type i Comments 1-07 699 uA3 Prim mus Water Sam Sta -7 .N/A. Prim map Wtr 5tg ik Yes . N/A . 47W479-3 Closed OK

l. 2-07 669 uA13 Prte m up Water Sa g Sta
  • Same as 1-D7 1

j A8 690 mA9 Gas Analyrer Panel ~ -8 Custom- 1. Capped - Vent- 47W479-5 Open 01 Not ALARA (Panel 0-L-206) Ifne 2. CVC5 Vol Control Tk 1 Yes Control 3. Spent Resin 5tg Tk Yes 4918-1 4. RCS Press Relief Tk 1 Yes

5. WD5 Gas Decay Tk Auto Yes
6. CVCS Holdup Tk 1 Yes

. 7. CYCS Holdup Tk 2 Yes

! 8. WDS Gas Decay Tk Man Yes

9. Capped -
10. Capped -
11. CVCS Vol Control Tk 2 Yes
12. RCS Press Relief Tk 2 Yes
13. Capped -

A9 734 uAll Emergency Sagle Sta -9 N/A 1. Hot Leg Loop 1 & 3-2 Yes N/A 47W479-11 Open H1 OK See Note 1 .-

2. Sta Gen 81dn 1 - 2 Yes
3. Sta Gen 81dn 2 - 2 Yes
4. Ste Gen 81dn 3 - 2 Yes 4
5. Sta Gen 81dn 4 - 2 Yes l 6. Sta Gen 81dn 4 - 1 Yes
7. Sta Gen 81dn 3 - 1 Yes

. 8. Sta Gen 81dn 2 - 1 Yes

] 9. Sta Gen 81dn 1 - 1 Yes

10. Hot Leg Loop 1 & 3-1 Yes

] 89 659 CL All Aux Waste Evap Sanples -9 N/A 1. Distillate Yes 1. Distillate None N/A I 2. Condensate Yes 2. Condensate C9 669 CL A!0 Waste Evap Sagles -9 N/A 1. Distillate Yes 1. Distillate None N/A

2. Condensate- Yes 2. Condensate l

09 669 rA14 Evap Pkg A & 8 Samles -9 N/A 1. Evap A Aistillate Yes 1. Evan A DistillateNone N/A

2. Evap A Condensate Yes 2. Evap A Condensate
3. Evap 8 Distillate Yes 3. Evap 8 Distillate

! 4. Evan 8 Condensate Yes 4. Evap 8 Condensate 1

I i

7 l 051D (12/02/86) 1 i

wi J.

[2 L,

APPE W II d TVA DF (iRN5 RE80RT Nup. '; >' .2(8)

'229

~

5AfrLING 51Y' $PECIAL PRusRWE i REVISION NLpIBER: 0 '.

PAGE 27 0F 27 - ,

Om8 Wondor Drain Header Drafn Connect Drain Detall Stak Elev Column Description 4N625 Orautag . Inlet' ,

'Het* Outlet Orawing Type Detail Type Detail Type. Comments 1-E 9 714 d4 Gross failed Fuel Detector -9 N/f 1. 4N625-1 4 N625-1 None N/A

2. 4N625-13 2-E9 714 d12 Gross Falled Fuel Detector Same as 1-E9 4 N479-6 Closed 01 OK A13 714 d12 Hot Reactor Coolant samp Mod -13 Not stated Hot Leg 1 & 3 Yes N/A 4 N479-6 Closed C1 Open drain OK 1-20 706 MAS UNI Water Accum Tk Samp Sta -17 N/A UNI Water Accum Tk No N/A 4 N479-6 Closed 01 - Open drain OK 2-20 706 mall UN! Water Accum Tk Samp Sta -17 N/A URI Water Accum Tk No N/A See 1 819 See I-819 1-A19 690 d5 L1guld Sampling Panel -19 N/A 1. Rm Exchgr 1A Yes Stat 1-819 (Panel 1-L-567) 2. RNt Exchgr 18 ' Yes
3. Rm Exchgr 2A Yes
4. RNR Exchgr 28 Yes See 2-819 See 2-819 2-A19 690 d11 Liquid Sampling Panel -19 N/A Same as 1-A19 Yes $1nk 2-819 (Panel 2-L-567) 4N479-5 Open 01 Not ALARA 1-819 690 mA5 Chemical Analysis Panel -19 N/A Staks 1-A19 & 1-C19 Yes N/A (Panel 1-L-568) Same as 1-819 2-819 590 d11 Chemical Analysis Panel -19 N/A Sinks 2-A19 4 2-C19 Yes -

(Panel 2-L-568) See 2-819 See 1-619 1-C19 690 d5 Contat Air Sampling Panel -19 N/A Containment Afr No Sink 1-819 (Panel 1-L-569) See 1-819 See 2-819 2-C19 690 d11 Contet Air Sampling Panel -19 N/A Containment Air No $1nk 2-819 (Fanel2-L-569)

N/A

  • Not appifcable Note 1: The *open* drafn header to which this sink is connected has no floor drains or open equipment drafn connections and terminates in tre Waste Holdup Tank and therefore has the characteristics

' ~

of a ' closed

4

  • e 05130 (12/02/86)

I' m , _.m _# m

REFERENCE - ECPS120J-ECPS121C TENNESSEE VALLEY AUTHORITY PAGE -

113 FREQUENCY - REQUEST OFFICE OF NUCLEAR POWER RUN TIME - 12:57:19 ...

O CHP - ISSS - RHM EMPLOYEE CONCERN PROGRAM SYSTEM (ECPS) RUN DATE - 12/02/86 LIST OF EMPLOYEE CONCERN INFORMATION CATEGORY: EN DES PROCESS a OUTPUT SUBCATEGORY: 22902 RADI0 ACTIVE PANEL DRAINS INTO FLOOR DRAINS

() S GENERIC KEYHORD A H APPL QTC/NSRS P KEYNORD B CONCERN SUB R PLT B B S.H INVESTIGATION S CONCERN, KEYHORD C (j NUMBER CAT CAT D LOC FLQB REPORT R DESCRIPTION KEYWORD D IN 143-003 EN 22902 N HBN NNYY SR THERE ARE CONTAMINATED INSTRUMENT DR HEALTH PHYSICS T50236 K-FORM AINS GOING INTO OPEN DRAINS IN THE R TAGGING i ACEHAY OF BOTH REACTOR BUILDINGS. C INSTRUMENTATION l l

! O ONSTRUCTION DEPARTMENT CONCERN. CI INSTRUMENT / MECH

. HAS NO FURTHER INFORMATION. NO FOLL OH UP REQUIRED.

() IN 197-002 EN 22902 N HBN NNYY SR INSTRUMENT DRAIN LINES (CLOSED SYSTE DESIGN REVIEW T50155 K-FORM M) COMING OFF INSTRUMENT RACKS IN RE INSTALLATION ACTOR BUILDING UNIT 1 RACEWAY AREA A INSTRUMENTATION RE CONNECTED TO OPEN FLOOR DRAINS TH TUBING O AT ARE VENTED TO ATMOSPHERE INSIDE R

.B.81. CI IS CONCERNED THAT DUE TO HIGH OPERATING TEMPERATURE INSIDE R.

B. DURING OPERATION THAT THE RADIDAC O TIVE HATER COMING FROM INSTRUMENT PA NELS HILL EVAPORATE CAUSING AIRBORNE CONTAMINATION TO PEOPLE HORKING IN OR IN THIS AREA. CONSTR. DEPT. CONC O ERN. CI HAS NO FURTHER INFO.MATION. l NO FOLLOHUP REQUIRED. - l IN 514-002 EN 22902 N HBN YYYY IN-85-514-002 NO CLOSED DRAIN SYSTEM, 276 SYSTEM, 1/2 HEALTH PHYSICS

() T50043 REPORT " SS DRAIN PIPE EMPTIES INTO FLOOR D SAFETY CONDITIDH RAIN HITH OPEN GRATING IN UNIT 1 REA OPERATIONS CTOR BUILDING ELEV. 702' RACEHAY AR EMPLOYEES EA BETHEEN CONTAINMENT LINER AND CRA

() NE HALL. CI DOES NOT REMEMBER A ZUM

~

ITH. CI IS CONCERNED THAT OPEN GRAT ING ON FLOOR DRAIN HILL LEAD TO HIGH RADI ATION EXPOSURES TO EMPLOYEES HD

() RKING IN THIS AREA.

IN 748-001 EN 22902 N HBN NNYY IN-85-748-001 SR RACENAY (REACTOR BUILDING 81 8 2) CU SAFETY CONDITION T50079 REPORT RRENTLY REACTOR BUILDING 82, APPROXI SAFETY PROGRAM

() MATELY 708' ELEVATION. THE SEALED D SYSTEMS RAINS COMING OFF THE INSTRUMENT PANE PIPE LS ARE BEING TIED INTO REGULAR DRAIN S RATHER THAN RADIATION DRAINS. THI

() S HAS BEEN REPORTED AND HO CORRECTIV E ACTION TO DATE. NO MORE INFORMATI ON AVAILADLE AT PRESENT.

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REFERENCE' - ECP'I20J-ECPSl21C S ~ ~~ [ TENNESSEE VALLEY AUTHORITY PAGE -

114 FREQUENCY - REQUEST- -~- - - - - - ' 0FFICE OF NUCLEAR POWER RUN TIME - 12:57:19 v o- ONe . ---ISSS - RHMew " mw N-

N T.MPLOYEE CONCERN PROGRAM SYSTEM (ECPS) RUN DATE - 12/02/86-LIST OF EMPLOYEE CONCERN INFORMATION CATEGORY: EN DES PROCESS & OUTPUT SUBCATEGORY: 22902 RADI0 ACTIVE PANEL DRAINS INTO FLOOR DRAINS O --S GENERIC KEYHORD A H APPL QTC/NSRS P KEYWORD B CONCERN - SUB R PLT BBSH INVESTIGATION S CONCERN KEYHORD C O - NUMBER CAT CAT ~ D LOC FLQB REPOP.T ~ R DESCRIPTION KEYHORD D IN 952-001 EN 22902 N HBN~ NNYY SR HOT SYSTEMS, SYTEM 62, 64 AND 68. IN DESIGN RELATED d

~~ T50103 _. .___K-FORM STRUMENT PANELS IN UNIT 1, REATOR BL NONCONFORMANCE DG., RACEHAY AREA, DRAIN INTO OPEN F SYSTEMS

_ O .. LOOR DRAINS. CI FEELS THESE PANELS

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' SHOULD DRAN INTO CLOSED (CONTAINED)

DRAIN SYSTEM. CI HAS NO FURTHER INF ORMATION. NO FOLLOH UP REQUIRED.

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IN --85-983-001 - EN 22902 N HBN - YYYY SR PANELS IN RACEHAY RBSI AND 82 ARE DE DESIGN REVIEW 1

T50112~

REPORT SIGNED TO DRAIN INTO FLOOR DRAIN. T HEALTH PHYSICS HERE IS A POTENTIAL FOR RELEASE OF R ELECTRICAL -

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ADIOCTIVE MATERIAL. CI HAS NO ADDIT CONTROL PANEL IONAL INFORMATION. NO FOLLOW UP REQ UIRED.

O -xx 127-001 .EN J22902' ~N~ -SQN Y Y.Y Y ' - SR SEGUOYAH " HOT" PANEL DRAINS ARE RO NONCONFORMANCE 3 T50216" _ ~" REPORT UTED INTO THE FLOOR DRAINS INSTEAD 0 CORRECTIVE ACTION

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~ F CLOSED TANKS. CONSTRUCTION DEPT. PIPING CONCERN. CI HAS NO FURTHER INFORMAT PIPE O.. ION.

7 CONCERNS FOR CATEGORY EN SUBCATEGORY 22902 O' .

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