Dec 22 (Reuters) - UK'S UNITE UNION:

* SAYS PETROFAC WORKERS TAKE FURTHER ACTION IN BITTER DISPUTE OVER PAY AND CONDITIONS

* SAYS AROUND 170 MEMBERS TAKING 48-HOUR STRIKE ACTION AT PETROFAC REPSOL INSTALLATIONS OFFSHORE FROM DEC. 22

* SAYS THE ACTION FOLLOWS WORKERS REJECTING THE LATEST PAY OFFER FROM THE COMPANY BY 79% ON AN 89% TURNOUT

* SAYS INSTALLATIONS IMPACTED INCLUDE THE ARBROATH, AUK, BLEO HOLM, CLAYMORE, CLYDE, FULMAR ALPHA, PIPER BRAVO, SALTIRE, TARTAN ALPHA, AND FLOTTA OIL TERMINAL

* SAYS FURTHER 48-HOUR STRIKE WILL IMPACT THE MONTROSE PLATFORM STARTING ON DEC. 29- 31

* SAYS IN A SEPARATE DISPUTE, PETROFAC’S BP INSTALLATIONS: ANDREW, CLAIR, CLAIR RIDGE, ETAP, AND GLEN LYON FLOATING PRODUCTION, STORAGE AND OFFLOADING (FPSO) FACILITY WILL ALSO BEGIN 48-HOUR STRIKE ACTION ON DEC. 29 TO 31

* SAYS THE PETROFAC BP DISPUTE CENTRES ON THE WORKING ROTATION, WHICH IS CURRENTLY A WORK 3 ON/3 OFF ROTATION; THIS ACTION INVOLVES 76 MEMBERS (Reporting by Swati Verma in Bengaluru)