SINGAPORE, May 22 (Reuters) - The Asian ultra low sulphur diesel premium fell to a more than six-week low on Wednesday as arbitrage economics to send the cargoes to Europe remained firmly shut on weak European demand, industry sources said.     The cash premium for the 10 ppm sulphur diesel premium fell 12 cents to $1.66 a barrel above Singapore quotes, lowest since April 8 when it was at $1.64, Reuters data showed.     Australia remains one of the main importers of the diesel grade, apart from Europe, traders said.     But lower refinery runs in Japan, a major exporter of the grade, could support the premiums in the next week, they added.     Japan's refinery runs fell to 64.9 percent in the week to May 18, from 74.4 percent the previous week, latest data from the Petroleum Association of Japan showed.  
  O/JAPAN1
       But its diesel exports rose slightly despite the run cuts, suggesting domestic demand is lacklustre, traders said.     India's Hindustan Petroleum Corp Ltd (HPCL) is seeking a rare high sulphur gasoil cargo for early June delivery after a fire at its Visakhapatnam plant last week.     The state-owned refiner sold a similar cargo last year and has turned buyer for the first time in at least a year.      A fire hit HPCL's 8.3 million tonnes a year Visakhapatnam plant on May 16, prompting it to shut a 3 million tonnes a year (or around 60,000 barrels-per-day) crude distillation unit.      HPCL is aiming to restart the unit by the last week of June, a company source said. This could prompt more import tenders in the next few weeks as it is peak summer demand season in India when the fuel is used for power generation.     Pakistan State Oil is expected to soon start term negotiations to purchase gasoil from its long-term supplier Kuwait Petroleum Corp, an industry source said. The company is not expected to buy any spot cargoes in the spot market despite power shortages which have hit the country, the source added.     In the Gulf, a term contract by Abu Dhabi National Oil Co (ADNOC) to sell jet fuel from July this year to June next year is likely to have attracted bids of $2 a barrel and below, traders said, though this could not immediately be confirmed.     ADNOC requested a premium of $2.25 a barrel above Middle East quotes, but given the weak global demand for jet fuel, this might be too high, one of them said.     But some demand emerged from from Mediterranean for Gulf jet fuel cargoes, a second trader said, which could bolster premiums.          * TENDERS: HPCL is seeking 25,000 to 30,000 tonnes of 1 percent sulphur gasoil for June 3 to 7 delivery into Vizag. The tender closes on May 23.      - Kuwait Petroleum Corp has offered 40,000 tonnes of 0.2 percent sulphur gasoil for June 23 to 24 loading. The tender closes on May 23, with same-day validity.           * SINGAPORE CASH DEALS: One gasoil deal, no jet fuel trades.     - BP sold 150,000 barrels of 0.25 percent sulphur gasoil for June 6 to 10 loading to Unipec at a discount of 5 cents a barrel to the average of June 5 to 11 Singapore quotes.        MID-DISTILLATES                                                                      CASH ($/T)            ASIA CLOSE      Change  % Change   Prev     RIC                                                           Close      Spot Gas Oil 0.5%             115.42   -1.22      -1.05   116.64   
  GO-SIN
    GO 0.5 Diff                    -1.60    0.20     -11.11    -1.80   
  GO-SIN-DIF
    Spot Gas Oil 0.25%            116.82   -1.14      -0.97   117.96   
  GO25-SIN
    GO 0.25 Diff                   -0.20    0.28     -58.33    -0.48   
  GO25-SIN-DIF
    Spot Gas Oil 0.05%            117.77   -1.42      -1.19   119.19   
  GO005-SIN
    GO 0.05 Diff                    0.75    0.00       0.00     0.75   
  GO005-SIN-DIF
    Spot Gas Oil 0.001%           118.68   -1.55      -1.29   120.23   
  GO10-SIN
    GO 0.001 Diff                   1.66   -0.12      -6.74     1.78   
  GO10-SIN-DIF
    Spot Jet/Kero                 116.03   -1.39      -1.18   117.42   
  JET-SIN
    Jet/Kero Diff                  -0.15    0.00       0.00    -0.15   
  JET-SIN-DIF
                                                                                         SWAPS  ($/T)          ASIA CLOSE      Change  % Change   Prev     PM (1130 GMT)                        (0830 GMT)                         Close      Brent M1                      103.19   -1.20      -1.15   104.39   
  BRENTSGMc1
    Gasoil M1                     117.00   -1.40      -1.18   118.40   
  GOSGSWMc1
    Gasoil M1/M2                    0.42   -0.08     -16.00     0.50   
  GOSGSPDMc1
    Gasoil M2                     116.58   -1.32      -1.12   117.90   
  GOSGSWMc2
    Regrade M1                     -0.82    0.00       0.00    -0.82   
  JETREGSGMc1
    Regrade M2                     -0.28   -0.09      47.37    -0.19   
  JETREGSGMc2
    Jet M1                        116.18   -1.40      -1.19   117.58   
  JETSGSWMc1
    Jet M1/M2                      -0.12    0.01      -7.69    -0.13   
  JETSGSPDMc1
    Jet M2                        116.30   -1.41      -1.20   117.71   
  JETSGSWMc2
    Gasoil 500ppm-Dubai            16.88   -0.16      -0.94    17.04   
  GOSGCKMc1
    Cracks M1                                                           Gasoil 500ppm-Dubai            16.76   -0.23      -1.35    16.99   
  GOSGCKMc2
    Cracks M2                                                           Jet Cracks M1                  16.06   -0.17      -1.05    16.23   
  JETSGCKMc1
    Jet Cracks M2                  16.54   -0.26      -1.55    16.80   
  JETSGCKMc2
    East-West M1                    4.97    1.64      49.25     3.33   
  LGOAEFSMc1
    East-West M2                   -0.53    0.86     -61.87    -1.39   
  LGOAEFSMc2
    LGO M1                        866.75  -12.00      -1.37   878.75   
  LGOAMc1
    LGO M1/M2                      -2.00   -1.00     100.00    -1.00   
  LGOASPDMc1
    LGO M2                        868.75  -11.00      -1.25   879.75   
  LGOAMc2
    Crack LGO-Brent M1             13.42   -0.28      -2.04    13.70   
  LGOACKMc1
    Crack LGO-Brent M2             13.79   -0.15      -1.08    13.94   
  LGOACKMc2
            (Reporting by Jessica Jaganathan, editing by William Hardy)  ((jessica.jaganathan@thomsonreuters.com)(+65 6870 3822)(Reuters Messaging: jessica.jaganathan.thomsonreuters.com@reuters.net))  Keywords: MARKETS DISTILLATES/ASIA