** Shares of Krystal Integrated Services KRYT.NS rise as much as 7.7% to 563.85 rupees
** Facilities management services co gets contract from Tamil Nadu Medical Services Corp for housekeeping and security services in medical institutions for 3.49 bln rupees ($40.9 mln)
** Stock on track to gain for third straight week; it has risen 14.1% so far this week
** More than 274,000 shares traded as of 1:58 p.m. IST, 3.6x their 30-day moving avg
** KRYT last up 3.7%, cutting YTD losses to 27.6%
($1 = 85.4350 Indian rupees)
(Reporting by Meenakshi Maidas in Bengaluru)
((meenakshi.maidas@thomsonreuters.com;))