Deprecated: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in /customers/c/d/b/jvmv2.se/httpd.www/daniel/forum/includes/entry.inc.php on line 252 Warning: Cannot modify header information - headers already sent by (output started at /customers/c/d/b/jvmv2.se/httpd.www/daniel/forum/includes/entry.inc.php:252) in /customers/c/d/b/jvmv2.se/httpd.www/daniel/forum/index.php on line 217 Warning: Cannot modify header information - headers already sent by (output started at /customers/c/d/b/jvmv2.se/httpd.www/daniel/forum/includes/entry.inc.php:252) in /customers/c/d/b/jvmv2.se/httpd.www/daniel/forum/index.php on line 218 SJs krav vid ATC-upphandlingen - 2008 - 2023 års Järnvägshistoriska forum

SJs krav vid ATC-upphandlingen (Signaler/säkerhet)

av ArneL, Wednesday, November 09, 2022, 22:28 (750 dagar sedan) @ Anders_W

Citerar direkt ur ”Gröna boken”, ATC-beskrivningen publicerad i juni 1978, kapitel 3.4:

” ... medeltiden mellan farliga fel är minst 1000 år för systemet som helhet (2000 fordonsutrustningar, 10 000 signalinformationspunkter, 10 000 tavleinformationspunkter).”

Vidare:

”En medeltid mellan farliga fel på tusen år motsvarar en sannolikhet för farliga fel om 0,114 mikrofilm/timme.”

/Arne Larsson

Hela tråden:

 

Time: 263
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE pid = 0 AND (mlf2_akismet_rating.spam = 0 AND mlf2_b8_rating.spam = 0) AND category IN (0, 4, 5, 6, 7, 8, 9, 25, 14, 23, 19, 22, 24, 10, 21, 11, 12, 13, 15, 16, 26, 18, 20, 27)

Time: 1069
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE (mlf2_akismet_rating.spam = 1 OR mlf2_b8_rating.spam = 1)
Time: 1229
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE category IN (0, 4, 5, 6, 7, 8, 9, 25, 14, 23, 19, 22, 24, 10, 21, 11, 12, 13, 15, 16, 26, 18, 20, 27) AND (mlf2_akismet_rating.spam = 0 AND mlf2_b8_rating.spam = 0)

Total time: 2570