ML19269C845: Difference between revisions
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STONE FJ WEBS ER ENGINEERING CORPORATION 245 SUMMEh STREET. Boston. M A ss A CH U SETTs ADDRESS ALL CORRESPONDENCE TO P.O. BOX 2325. BOSTON. M ASS. 02107 Newwvenn otsioN c"c'. c'O ' ' *O.' " . " * ' ' ~ | STONE FJ WEBS ER ENGINEERING CORPORATION 245 SUMMEh STREET. Boston. M A ss A CH U SETTs ADDRESS ALL CORRESPONDENCE TO P.O. BOX 2325. BOSTON. M ASS. 02107 Newwvenn otsioN c"c'. c'O ' ' *O.' " . " * ' ' ~ | ||
>+0v57ON EM AMIN ATiONS LAN R GON Mr. C. J. Ile1temes, Jr. , Chief January 26, 1979 Standardization Branch W.O. No. 510.41 Office of Nuc1 car Reactor Reculation ' | >+0v57ON EM AMIN ATiONS LAN R GON Mr. C. J. Ile1temes, Jr. , Chief January 26, 1979 Standardization Branch W.O. No. 510.41 Office of Nuc1 car Reactor Reculation ' | ||
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COLD SilUTD0hN REQUIREME. V fS - | COLD SilUTD0hN REQUIREME. V fS - | ||
DOCKI?f NO. STN-50-495 | |||
'SGW REFERENCE NUCLEAR POWER PLANT Lis letter responds to your letter of November 17, 1978, relative to the Staff Position on cold shutdown requircaents for SWESSAR-P1/BSAR-205. | 'SGW REFERENCE NUCLEAR POWER PLANT Lis letter responds to your letter of November 17, 1978, relative to the Staff Position on cold shutdown requircaents for SWESSAR-P1/BSAR-205. | ||
On the assumption that there are no changes in the BSAR-205 design as approved by the NRC (PDA-12, May 31,1978), the Staff Position has no effect on our des ign. Therefore, we believe the PDA for SWESSAR-P1/ BSAR-205 can be issued without further delays. | On the assumption that there are no changes in the BSAR-205 design as approved by the NRC (PDA-12, May 31,1978), the Staff Position has no effect on our des ign. Therefore, we believe the PDA for SWESSAR-P1/ BSAR-205 can be issued without further delays. | ||
Notwithstanding our degree of conformance, Stone G Nebster has the following coments regarding the NRC Staff Position. A safety grade cooldown to cold shutdown conditions has not been shown to be a significant safety issue. | Notwithstanding our degree of conformance, Stone G Nebster has the following coments regarding the NRC Staff Position. A safety grade cooldown to cold shutdown conditions has not been shown to be a significant safety issue. | ||
Although hot shutdown is a safe condition, there also exist acceptabic nethods of proceeding ta cold shutdown. A complete value/ inpact analysis, in our opinion, would not justify the implementation of the Staff Position on any plant. Without a value/inpact analysis, any design changes required as a result of the Staff Position are counter productive to the standardi::ation effort. Stone G Webster is in agreement with the comments provided by Atonic Industrial Forun, Inc. (AIF) and The Babcock 6 Wilcox Company (BGW) on Regula-tory Guide 1.139 - Guidance for Residual lleat Removal (refer to letter fron Mr. J. Ward of AIF to Mr.11. Denton of the NRC dated November 21, 1978, and to letter fron Mr. J. Taylor of BGN to the Secretary of the Connission dated August 4,1978) as applicable to the Staff Position. | Although hot shutdown is a safe condition, there also exist acceptabic nethods of proceeding ta cold shutdown. A complete value/ inpact analysis, in our opinion, would not justify the implementation of the Staff Position on any plant. Without a value/inpact analysis, any design changes required as a result of the Staff Position are counter productive to the standardi::ation effort. Stone G Webster is in agreement with the comments provided by Atonic Industrial Forun, Inc. (AIF) and The Babcock 6 Wilcox Company (BGW) on Regula-tory Guide 1.139 - Guidance for Residual lleat Removal (refer to letter fron Mr. J. Ward of AIF to Mr.11. Denton of the NRC dated November 21, 1978, and to letter fron Mr. J. Taylor of BGN to the Secretary of the Connission dated August 4,1978) as applicable to the Staff Position. | ||
Very truly yours, | Very truly yours, cwh // | ||
cwh // | |||
1./J. L. Kenn y- 7 / | 1./J. L. Kenn y- 7 / | ||
Vice President JIN:ars O oh | Vice President JIN:ars O oh | ||
+1 0 790214 09N i}} | +1 0 790214 09N i}} | ||
Latest revision as of 20:06, 1 February 2020
| ML19269C845 | |
| Person / Time | |
|---|---|
| Site: | 05000495 |
| Issue date: | 01/26/1979 |
| From: | Kennedy W L STONE & WEBSTER, INC. |
| To: | Heltenmes C Office of Nuclear Reactor Regulation |
| References | |
| RPS-361, NUDOCS 7902140214 | |
| Download: ML19269C845 (1) | |
Text
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STONE FJ WEBS ER ENGINEERING CORPORATION 245 SUMMEh STREET. Boston. M A ss A CH U SETTs ADDRESS ALL CORRESPONDENCE TO P.O. BOX 2325. BOSTON. M ASS. 02107 Newwvenn otsioN c"c'. c'O ' ' *O.' " . " * ' ' ~
>+0v57ON EM AMIN ATiONS LAN R GON Mr. C. J. Ile1temes, Jr. , Chief January 26, 1979 Standardization Branch W.O. No. 510.41 Office of Nuc1 car Reactor Reculation '
U.S. Nucicar Regulatory Connission RFS-361 liashington, DC 20555 (Follows RPS-349)
Dear Sir:
COLD SilUTD0hN REQUIREME. V fS -
DOCKI?f NO. STN-50-495
'SGW REFERENCE NUCLEAR POWER PLANT Lis letter responds to your letter of November 17, 1978, relative to the Staff Position on cold shutdown requircaents for SWESSAR-P1/BSAR-205.
On the assumption that there are no changes in the BSAR-205 design as approved by the NRC (PDA-12, May 31,1978), the Staff Position has no effect on our des ign. Therefore, we believe the PDA for SWESSAR-P1/ BSAR-205 can be issued without further delays.
Notwithstanding our degree of conformance, Stone G Nebster has the following coments regarding the NRC Staff Position. A safety grade cooldown to cold shutdown conditions has not been shown to be a significant safety issue.
Although hot shutdown is a safe condition, there also exist acceptabic nethods of proceeding ta cold shutdown. A complete value/ inpact analysis, in our opinion, would not justify the implementation of the Staff Position on any plant. Without a value/inpact analysis, any design changes required as a result of the Staff Position are counter productive to the standardi::ation effort. Stone G Webster is in agreement with the comments provided by Atonic Industrial Forun, Inc. (AIF) and The Babcock 6 Wilcox Company (BGW) on Regula-tory Guide 1.139 - Guidance for Residual lleat Removal (refer to letter fron Mr. J. Ward of AIF to Mr.11. Denton of the NRC dated November 21, 1978, and to letter fron Mr. J. Taylor of BGN to the Secretary of the Connission dated August 4,1978) as applicable to the Staff Position.
Very truly yours, cwh //
1./J. L. Kenn y- 7 /
Vice President JIN:ars O oh
+1 0 790214 09N i