ML20236E672

Rev 0 to Electrical Safety:Exposed HV Cable Routed W/O Raceway- Personnel Hazard, TVA Employee Concerns Special Program Element Rept

ML20236E672
Person / Time
Site:	Sequoyah
Issue date:	12/29/1986
From:	TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20236E191	List: ML20236E186 ML20236E237 ML20236E273 ML20236E282 ML20236E287 ML20236E291 ML20236E294 ML20236E298 ML20236E304 ML20236E309 ML20236E325 ML20236E329 ML20236E350 ML20236E496 ML20236E516 ML20236E613 ML20236E618 ML20236E649 ML20236E657 ML20236E672 ML20236E675 ML20236E693
References
235.4(B), 235.4(B)-R, 235.4(B)-R00, NUDOCS 8710290308
Download: ML20236E672 (7)

Text

.____ _ _

.]

j

., j 3 .

Y ,

' TVA EMPLOYEE' CONCERNS

-REPORT NUMBER

L 235.4(B) i

. (:- SPECIAL PROGRAM:

3 '.:..'.

REPORT' TYPE: SEQUOYAH ELEMENT . REVISION NUMBER: 0 1 TITLE:- E'LECTRICAL SAFETY-1 4 s ~ Exposed HV Cable Routed Without PAGE 1 0F 7 1 Raceway-Personnel Hazard.

4 s q

]

1 9

. REASON FOR REVISION:

, .s PREPARATION

( PREPARED BY: '

l N 48&

SIGNATURE k.0 s.~ Iz-/*l-FG

-DAll REVIEW 5 _;

! M REV EW C IlltE:

e - .=_r ~

}Yl[A_ /

$ /

N DAlt SI6NATUR TAST SIGNATURE DATE CONCURRENCE 5 dNb JYWfd gu %Ba8R SE!#1 cgo.3,g g y e f22,,t SRP:

SIGNATURE DATE SIGNATURE DATE APPROVED BY:

ECSP MANAGER DATE MANAGER OF NUCLEAR POWER DATE CONCURRENCE (FINAL REPORT ONLY)

,t

# l'l

, TVA EMPLOYEE CONCERNS REPORT NUhBER: 235.4(B)

'* SPECIAL PROGRAM  !

- REVISION NUMBER: 0 l PAGE 2 0F 7

1. CHARACTERIZATION'0F ISSUES:

l Concern: Issue:

I IN-85-749-001 a. High voltage cables laid unprotected "High voltage cables are laid around the edges of rooms could around edge of rooms (such as suffer damage to insulation. <

raceway in Reactor #2) without Flooding in such a situation may protection from damage to in- pose a personnel safety hazard. j sulation. These areas are often i flooded, and could pose a threat l' of shock hazard to workert. if insulation were damaged."

2. HAVE ISSUES BEEN IDENTIFIED IN ANOTHER SYSTEMATIC ANALYSIS? YES X NO

)

Documentation Identifiers:

o Identified by TVA WBN Investigation / Evaluation Report Date 01/17/86 TVA, WBN Investigation / Evaluation Report - Employee Saf'e'ty Concern - OTC Concern Number: IN-85-749-001

3. DOCUMENT NOS., TAG N05., LOCATIONS OR OTHER SPECIFIC DESCRIPTIVE IDENTIFICATIONS STATED IN ELEMENT:

The employee concern for WBN cited a specific location, but the implied generic concern for SQN is general in nature.

i

4. INTERVIEW FILES REVIEWED:

File IN-85-749 was reviewed and no additional unreviewed information for Sequoyah was identified for the concern in this report.

5. DOCUMENTS REVIEWED RELATED TO THE ELEMENT:

See Appendix A. j

(

05320 - 12/19/86 l

y, m

p r.

hi- *

p .

n ?? -" J'-

d .

1. TVA EMPLOYEE CONCERNS REPORT NUMBER:: 235.4(B) '

v a, SPECIAL PROGRAM P . REVISION NUMBER: 0'

". , PAGE 3 0F 7.-

n .-

$;g a..

04 . 6.: WHAT: REGULATIONS LICENSING COMMITMENTS. DESIGN REQUIREMENTS OR OTHER.

APPLY OR CONTROL IN THIS AREA?

s

, -See Appendix.A.

7. - LIST REQUESTS FOR INFORMATION.' MEETINGS. TELEPHONE CALLS AND OTHER DISCUSSIONS RELATED TO ELEENT.

S

@ See Appendix A.

c E

8.= EVALUATION PROCESS:

a. ' Reviewed cvailable transcripts of NRC investigative c

interviews for additional information on the concern.

e

b. Reviewed TVA Occupational- Health and Safety Mar:ual for safety regulations' applicable to cable installation practices.

9;

c. Reviewed copy of TVA/SQN Plant Housekeeping requirements for-(,1 adequate housekeeping instructions, inspections, and documentation.- ,,

d. Reviewed TVA/SQN Employee ' Safety Handbook for hazard control instructions and safety work rules. ,

e. Performed walkdown to determine'whether this condition exists at SQN.

f. Discussed with Safety Engineer SQN program to enforce good housekeeping requirements.

g. Reviewed TVA/WBN Investigation / Evaluation Report for applicability to the concern discussed in this report.

h. Assessed overall adequacy of SQN safety standards and housekeeping procedures.  ;

y [

I 05320 - 12/19/86

s f

.. , l

' TVA EMPLOYEE CONCERNS REPORT NUMBER: 235.4(B) c SPECIAL PROGRAM l REVISION NUMBER: 0 J 1

PAGE 4 0F 7 l

' ' j l

9. DISCUSSION. FINDINGS, AND CONCLUSIONS:

l Chronology:

Sometime in Concern submitted to TVA for WBN 1985:

07/18/85: Concern acknowledged by TVA l 01/17/86: Investigation / Evaluation Repert issued for WBN l 08/23/86 and SQN walkdowns performed by Evaluation Team l 11/11/86:

Discussion:

The Employee Concern asserts that high voltage cables (480 V) were laid along the outer edges of rooms with no protection against  ;

damage to the cables insulation. Additionally, these rooms are  !

subject to occasional flooding, which increases the possibility of electrical shock to plant workers.

1 This issue was raised on WBN and is considered generic to SQN ,

hecause of the similarity of the two plants. The high voltage '

(' cables referenced in the concern were identified by a WBN Investigation / Evaluation Report (App. A, 5.e; 01/17/86) as 230 V and 480 V temporary construction cables. Since construction at SQN j

has been completed and the plant was in operation for some time, the only construction activities occurring would be modification and maintenance work.

As part of the normal plant operation practices and to promote safety and prevent the occurrence of such problems as cited in the employee concern, TVA has issued the following safety standards and j housekeeping procedures:

o TVA Occupational Health and Safety Manual (App. A, 5.a; 10/30/81) copies the safety requirements of the OSHA Standard (App. A, 5.d) and states in Construction Section #1926 Industry' that, Cables passing through work areas shall be covered or elevated to protect it from damage which would create a hazard to employees." The requirements of this safety standard are being monitored for compliance by the SQN Safety Staff. l

[- o TVA/SQN has issued and implemented procedures for Plant

} Housekeeping (App. A, 5.b) which delineate housekeeping i j requirements during normal operation as well as during j l maintenance and modification activities. These procedures j

) / include requirements such as keeping floors and aisles free

' of obstructions, litter, dirt, water, oil, etc., so that

( movement of personnel and equipment is not hindered and work q l

05320 - 12/19/86 l

7'. -

.u 3.-

o, y, _ . .. .. ,

. O M. >

• TVA' EMPLOYEE CONCERNS' REPORT NUMBER:' 235.4(B)~

o -- ,

.SPECIAL OROGRAM

= REVISION NUMBER: 0' i

> PAGE 5 0F 7:

y activities can proceed in'an e'fficient manner. iThe:

procedures: include documentation and filing of 'recordsLof =

1 periodic housekeeping. inspections.: Although'the procedures-do not directly relate to thesissue, observance of their.

4 . requirements may prevent possible_ cable ~ damage.

h}

A

^? o -In addition, TVA/SQN has issued an Employee Safety Handbook (App'..A, 5.c) which describes safety work rules'and employee conduct, including instructions to keep electrical cords off: ,

-the floor ~and to inspect insulation for possible damage. j L 'Each employee.is-required to read and sign a verification . l E . card that he has read, understood, and will abide by the

-safety rules outlined'in the handbook. 1 A Walkdowns of' SQN Unit 1 and Unit 2 general plant areas were.

conducted by the evaluation team on 08/23/86 and 11/11/86 (App. A,.

7.d and. 7.e);to. determine the. applicability of this concern for SQN. No instances,were found of unprotected temporary cables on

theDfloors. It was observed that the genera 1' housekeeping.is excellent'and there'was no evidence.of flooding,: debris, or'__ .

excessive material;around work areas. Each task-is. performed under work: orders that outline requiremen.ts for safety and housekeeping.

The conditions,and requirements. discussed above have also been '

- verified' by interviews with the SQN Safety Engineers. j i

Fjndings: ,

The concern that high voltage cables are lying unprotected around the edges of. rooms could not be confirmed at SQN. 'The evaluation revealed that safety standards and housekeeping requirements conforming to industry standards have been issued, and are being l monitored and enforced by the SQN Safety Staff. 1 The concern that cables with damaged insulation lying in flooded areas may present a personnel hazard as discussed, could not-be verified at SQN since temporary cables were not lying on floors and ,

there was no evidence of flooding.

Conclusions. .

Based on the evaluation conducted, the items raised by the employee I concern are not considered valid for SQN. SQN has safety standards 1 and housekeeping requirements in force, including procedural l

-controls and documentation. 4 j

'10. CORRECTIVE ACTION:

No corrective action is required. .

i 05320 - 12/19/86

y., ?

?.N L _.. " i .. . . . ' TVA EMPLOYEE CONCERNS REPORT NUMBER: 235.4(B)  !

1 SPECIAL PROGRAM-y" M

• V- - REVISION. NUMBER: 0 PAGE 6'0F'7 g APPENDIX A

[ .

. 5; . DOCUMENTS REVIEWED RELATED TO THE ELEMENT:

- ?a. 'TVA Occupational Health and' Safety Manual,. Volume 3, p  :(10/30/81)-

h;' b. TVA, Sequoyah NuclearP ' lant, ' Standard Practice - Plant.

n- Housekeeping, SQA66, R8 '

n

c. TVA, Sequoyah Nuclear Plant,' Employee Safety Handbook

{

d. OSHA 2079,' Volume III, " Construction Standards and Interpretations,^Part 1926, Subpart K," June 1985 (Code of V,i j Federal Regulations, Labor 29, Part 1926, Subpart K -

, Electrical, July 1984) e.- TVA memo from L.C.JE111s to W.'H. Thompson,

• '" Investigation / Evaluation Report - Employee Safety Concern:.

'. IN-85-749-001," (LOS 851128 800), (01/17/86),

.C m .h' f.- Letter from B. J. Youngblood, NRC', to S. A.' White, TVA,'

(06/25/86)~with the attached transcript of,the investigative-interview conducted by.the NRC on 02/21/86'at the'First -

Tennessee Bank-Building in Knoxville, TN

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

None LIST REQUESTS FOR INFORMATION, MEETINGS TELEPHONE CALLS AND OTHER  !

7.

DISCUSSIONS RELATED TO ELEMENT.

a. Telecon, F. Jaksche, Bechtel, to P. Nesbitt, TVA, request for j information/ document criteria relating to the concern 1 (11/11/86)

b. Telecon, F. Jaksche, Bechtel, to M. Ibanez, Bechtel, SQN, review of TVA Occupational Health and Safety Manual, Vol. 3, Section #1926 (11/12/86) 05320 - 12/19/86

, *f ,

.]

. # TVA EMPLOYEE CONCERNS'. REPORT NUMBER: 235.4(B)

SPECIAL PROGRAM

- REVISION NUMBER: 'O jl

~

-PAGE 7 0F 7-lb APPENDIX A (cont'd) i

c. Telecon, D.-Knudsen, Bechtel, to F. Jaksche, Bechtel,

< .walkdown of general plant areas ~- temporary cables'(11/13/86).

.- d. Field walkdown at Sequoyah Site conducted byfdack Wheeler,-

Bechtel, and. Norm Black, TVA, (08/23/86)

e. Field walkdown at Sequoyah Site conducted by D. Knudsen, .1 Bechtel (11/11/86) '

i t.

e t

9 r i i

i l

i

)(

05320 - 12/19/86

- j